diff options
Diffstat (limited to 'testing/web-platform/tests/2dcontext/tools')
| -rw-r--r-- | testing/web-platform/tests/2dcontext/tools/LICENSE.txt | 36 | ||||
| -rw-r--r-- | testing/web-platform/tests/2dcontext/tools/current-work-canvas.xhtml | 3693 | ||||
| -rw-r--r-- | testing/web-platform/tests/2dcontext/tools/gentest.py | 787 | ||||
| -rw-r--r-- | testing/web-platform/tests/2dcontext/tools/name2dir.yaml | 45 | ||||
| -rw-r--r-- | testing/web-platform/tests/2dcontext/tools/spec.yaml | 717 | ||||
| -rw-r--r-- | testing/web-platform/tests/2dcontext/tools/specextract.py | 57 | ||||
| -rw-r--r-- | testing/web-platform/tests/2dcontext/tools/templates.yaml | 378 | ||||
| -rw-r--r-- | testing/web-platform/tests/2dcontext/tools/tests.yaml | 1068 | ||||
| -rw-r--r-- | testing/web-platform/tests/2dcontext/tools/tests2d.yaml | 10092 | ||||
| -rw-r--r-- | testing/web-platform/tests/2dcontext/tools/tests2dtext.yaml | 1013 |
10 files changed, 17886 insertions, 0 deletions
diff --git a/testing/web-platform/tests/2dcontext/tools/LICENSE.txt b/testing/web-platform/tests/2dcontext/tools/LICENSE.txt new file mode 100644 index 000000000..b248aa87e --- /dev/null +++ b/testing/web-platform/tests/2dcontext/tools/LICENSE.txt @@ -0,0 +1,36 @@ +2DContext and <canvas> test suite + +Copyright (c) 2010 Philip Taylor + +The code and all associated data files may be used under the terms of the +following license: + + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + +* Redistributions of works must retain the original copyright notice, this + list of conditions and the following disclaimer. + +* Redistributions in binary form must reproduce the original copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + +* Neither the name of the W3C nor the names of its contributors may be used to + endorse or promote products derived from this work without specific prior + written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE +FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + +Alternatively, the code and data may be used under the terms of +http://www.w3.org/Consortium/Legal/2008/04-testsuite-license.html diff --git a/testing/web-platform/tests/2dcontext/tools/current-work-canvas.xhtml b/testing/web-platform/tests/2dcontext/tools/current-work-canvas.xhtml new file mode 100644 index 000000000..b41ad7d4d --- /dev/null +++ b/testing/web-platform/tests/2dcontext/tools/current-work-canvas.xhtml @@ -0,0 +1,3693 @@ +<?xml version="1.0" encoding="UTF-8"?><html xml:lang="en-US-x-hixie" xmlns="http://www.w3.org/1999/xhtml"><head><title>HTML Standard</title><link href="http://www.whatwg.org/style/specification" rel="stylesheet"/><link href="http://www.whatwg.org/images/icon" rel="icon"/><style> + .proposal { border: blue solid; padding: 1em; } + .bad, .bad *:not(.XXX) { color: gray; border-color: gray; background: transparent; } + #updatesStatus { display: none; } + #updatesStatus.relevant { display: block; position: fixed; right: 1em; top: 1em; padding: 0.5em; font: bold small sans-serif; min-width: 25em; width: 30%; max-width: 40em; height: auto; border: ridge 4px gray; background: #EEEEEE; color: black; } + div.head .logo { width: 11em; margin-bottom: 20em; } + #configUI { position: absolute; z-index: 20; top: 10em; right: 0; width: 11em; padding: 0 0.5em 0 0.5em; font-size: small; background: gray; background: rgba(32,32,32,0.9); color: white; border-radius: 1em 0 0 1em; -moz-border-radius: 1em 0 0 1em; } + #configUI p { margin: 0.75em 0; padding: 0.3em; } + #configUI p label { display: block; } + #configUI #updateUI, #configUI .loginUI { text-align: center; } + #configUI input[type=button] { display: block; margin: auto; } + #configUI :link, #configUI :visited { color: white; } + #configUI :link:hover, #configUI :visited:hover { background: transparent; } + #reviewer { position: fixed; bottom: 0; right: 0; padding: 0.15em 0.25em 0em 0.5em; white-space: nowrap; overflow: hidden; z-index: 30; background: gray; background: rgba(32,32,32,0.9); color: white; border-radius: 1em 0 0 0; -moz-border-radius: 1em 0 0 0; max-width: 90%; } + #reviewer input { max-width: 50%; } + #reviewer * { font-size: small; } + #reviewer.off > :not(:first-child) { display: none; } + #alert { position: fixed; top: 20%; left: 20%; right: 20%; font-size: 2em; padding: 0.5em; z-index: 40; background: gray; background: rgba(32,32,32,0.9); color: white; border-radius: 1em; -moz-border-radius: 1em; -webkit-transition: opacity 1s linear; } + #alert.closed { opacity: 0; } + #alert button { position: absolute; top: -1em; right: 2em; border-radius: 1em 1em 0 0; border: none; line-height: 0.9; color: white; background: rgb(64,64,64); font-size: 0.6em; font-weight: 900; cursor: pointer; } + #alert :link, #alert :visited { color: white; } + #alert :link:hover, #alert :visited:hover { background: transparent; } + @media print { #configUI { display: none; } } + .rfc2119 { font-variant: small-caps; text-shadow: 0 0 0.5em yellow; position: static; } + .rfc2119::after { position: absolute; left: 0; width: 25px; text-align: center; color: yellow; text-shadow: 0.075em 0.075em 0.2em black; } + .rfc2119.m\ust::after { content: '\2605'; } + .rfc2119.s\hould::after { content: '\2606'; } + [hidden] { display: none; } + </style><style type="text/css"> + + .applies thead th > * { display: block; } + .applies thead code { display: block; } + .applies tbody th { whitespace: nowrap; } + .applies td { text-align: center; } + .applies .yes { background: yellow; } + + .matrix, .matrix td { border: hidden; text-align: right; } + .matrix { margin-left: 2em; } + + .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; } + .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; } + .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; } + + td.eg { border-width: thin; text-align: center; } + + #table-example-1 { border: solid thin; border-collapse: collapse; margin-left: 3em; } + #table-example-1 * { font-family: "Essays1743", serif; line-height: 1.01em; } + #table-example-1 caption { padding-bottom: 0.5em; } + #table-example-1 thead, #table-example-1 tbody { border: none; } + #table-example-1 th, #table-example-1 td { border: solid thin; } + #table-example-1 th { font-weight: normal; } + #table-example-1 td { border-style: none solid; vertical-align: top; } + #table-example-1 th { padding: 0.5em; vertical-align: middle; text-align: center; } + #table-example-1 tbody tr:first-child td { padding-top: 0.5em; } + #table-example-1 tbody tr:last-child td { padding-bottom: 1.5em; } + #table-example-1 tbody td:first-child { padding-left: 2.5em; padding-right: 0; width: 9em; } + #table-example-1 tbody td:first-child::after { content: leader(". "); } + #table-example-1 tbody td { padding-left: 2em; padding-right: 2em; } + #table-example-1 tbody td:first-child + td { width: 10em; } + #table-example-1 tbody td:first-child + td ~ td { width: 2.5em; } + #table-example-1 tbody td:first-child + td + td + td ~ td { width: 1.25em; } + + .apple-table-examples { border: none; border-collapse: separate; border-spacing: 1.5em 0em; width: 40em; margin-left: 3em; } + .apple-table-examples * { font-family: "Times", serif; } + .apple-table-examples td, .apple-table-examples th { border: none; white-space: nowrap; padding-top: 0; padding-bottom: 0; } + .apple-table-examples tbody th:first-child { border-left: none; width: 100%; } + .apple-table-examples thead th:first-child ~ th { font-size: smaller; font-weight: bolder; border-bottom: solid 2px; text-align: center; } + .apple-table-examples tbody th::after, .apple-table-examples tfoot th::after { content: leader(". ") } + .apple-table-examples tbody th, .apple-table-examples tfoot th { font: inherit; text-align: left; } + .apple-table-examples td { text-align: right; vertical-align: top; } + .apple-table-examples.e1 tbody tr:last-child td { border-bottom: solid 1px; } + .apple-table-examples.e1 tbody + tbody tr:last-child td { border-bottom: double 3px; } + .apple-table-examples.e2 th[scope=row] { padding-left: 1em; } + .apple-table-examples sup { line-height: 0; } + + .details-example img { vertical-align: top; } + + #base64-table { + white-space: nowrap; + font-size: 0.6em; + column-width: 6em; + column-count: 5; + column-gap: 1em; + -moz-column-width: 6em; + -moz-column-count: 5; + -moz-column-gap: 1em; + -webkit-column-width: 6em; + -webkit-column-count: 5; + -webkit-column-gap: 1em; + } + #base64-table thead { display: none; } + #base64-table * { border: none; } + #base64-table tbody td:first-child:after { content: ':'; } + #base64-table tbody td:last-child { text-align: right; } + + #named-character-references-table { + white-space: nowrap; + font-size: 0.6em; + column-width: 30em; + column-gap: 1em; + -moz-column-width: 30em; + -moz-column-gap: 1em; + -webkit-column-width: 30em; + -webkit-column-gap: 1em; + } + #named-character-references-table > table > tbody > tr > td:first-child + td, + #named-character-references-table > table > tbody > tr > td:last-child { text-align: center; } + #named-character-references-table > table > tbody > tr > td:last-child:hover > span { position: absolute; top: auto; left: auto; margin-left: 0.5em; line-height: 1.2; font-size: 5em; border: outset; padding: 0.25em 0.5em; background: white; width: 1.25em; height: auto; text-align: center; } + #named-character-references-table > table > tbody > tr#entity-CounterClockwiseContourIntegral > td:first-child { font-size: 0.5em; } + + .glyph.control { color: red; } + + @font-face { + font-family: 'Essays1743'; + src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743.ttf'); + } + @font-face { + font-family: 'Essays1743'; + font-weight: bold; + src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-Bold.ttf'); + } + @font-face { + font-family: 'Essays1743'; + font-style: italic; + src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-Italic.ttf'); + } + @font-face { + font-family: 'Essays1743'; + font-style: italic; + font-weight: bold; + src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-BoldItalic.ttf'); + } + + </style><style> + .domintro:before { display: table; margin: -1em -0.5em -0.5em auto; width: auto; content: 'This box is non-normative. Implementation requirements are given below this box.'; color: black; font-style: italic; border: solid 2px; background: white; padding: 0 0.25em; } + </style><link href="data:text/css," id="complete" rel="stylesheet" title="Complete specification"/><link href="data:text/css,.impl%20{%20display:%20none;%20}%0Ahtml%20{%20border:%20solid%20yellow;%20}%20.domintro:before%20{%20display:%20none;%20}" id="author" rel="alternate stylesheet" title="Author documentation only"/><link href="data:text/css,.impl%20{%20background:%20%23FFEEEE;%20}%20.domintro:before%20{%20background:%20%23FFEEEE;%20}" id="highlight" rel="alternate stylesheet" title="Highlight implementation requirements"/><link href="http://www.whatwg.org/specs/web-apps/current-work/status.css" rel="stylesheet"/></head><body class="draft" onload="init()"><header class="head" id="head"><p><a class="logo" href="http://www.whatwg.org/"><img alt="WHATWG" height="101" src="http://www.whatwg.org/images/logo" width="101"/></a></p> + <hgroup><h1 class="allcaps">HTML</h1> + <h2 class="no-num no-toc">Living Standard — Last Updated 8 August 2011</h2> + </hgroup><p class="copyright">© Copyright 2004-2011 Apple Computer, Inc., + Mozilla Foundation, and Opera Software ASA.</p> + <p class="copyright">You are granted a license to use, reproduce + and create derivative works of this document.</p> + + </header><h4 id="the-canvas-element"><span class="secno">4.8.11 </span>The <dfn id="canvas"><code>canvas</code></dfn> element</h4> + + <dl class="element"><dt>Categories</dt> + <dd><a href="#flow-content">Flow content</a>.</dd> + <dd><a href="#phrasing-content">Phrasing content</a>.</dd> + <dd><a href="#embedded-content">Embedded content</a>.</dd> + <dt>Contexts in which this element can be used:</dt> + <dd>Where <a href="#embedded-content">embedded content</a> is expected.</dd> + <dt>Content model:</dt> + <dd><a href="#transparent">Transparent</a>.</dd> + <dd><a href="#transparent">Transparent</a><!-- +--><!--FORK--><!-- +-->, but with no <a href="#interactive-content">interactive content</a> descendants except for <code><a href="#the-a-element">a</a></code> elements, <code><a href="#the-button-element">button</a></code> elements, <code><a href="#the-input-element">input</a></code> elements whose <code title="attr-input-type"><a href="#attr-input-type">type</a></code> attribute are in the <a href="#checkbox-state" title="attr-input-type-checkbox">Checkbox</a> or <a href="#radio-button-state" title="attr-input-type-radio">Radio Button</a> states, and <code><a href="#the-input-element">input</a></code> elements that are <a href="#concept-button" title="concept-button">buttons</a><!-- +--><!--FORK--><!-- +-->.</dd> <!-- and maybe <select>, I guess? I've left it in for now, since I guess authors might make accessible selects if they're simple enough, and it's not obvious how to distinguish the simple ones from the complex ones... --> + <dt>Content attributes:</dt> + <dd><a href="#global-attributes">Global attributes</a></dd> + <dd><code title="attr-canvas-width"><a href="#attr-canvas-width">width</a></code></dd> + <dd><code title="attr-canvas-height"><a href="#attr-canvas-height">height</a></code></dd> + <dt>DOM interface:</dt> + <dd> + <pre class="idl">interface <dfn id="htmlcanvaselement">HTMLCanvasElement</dfn> : <a href="#htmlelement">HTMLElement</a> { + attribute unsigned long <a href="#dom-canvas-width" title="dom-canvas-width">width</a>; + attribute unsigned long <a href="#dom-canvas-height" title="dom-canvas-height">height</a>; + + DOMString <a href="#dom-canvas-todataurl" title="dom-canvas-toDataURL">toDataURL</a>(in optional DOMString type, in any... args); + void <a href="#dom-canvas-toblob" title="dom-canvas-toBlob">toBlob</a>(in <span>FileCallback</span>? callback, in optional DOMString type, in any... args); + + object? <a href="#dom-canvas-getcontext" title="dom-canvas-getContext">getContext</a>(in DOMString contextId, in any... args); +};</pre> + </dd> + </dl><p>The <code><a href="#the-canvas-element">canvas</a></code> element provides scripts with a + resolution-dependent bitmap canvas, which can be used for rendering + graphs, game graphics, or other visual images on the fly.</p> + + <p>Authors should not use the <code><a href="#the-canvas-element">canvas</a></code> element in a + document when a more suitable element is available. For example, it + is inappropriate to use a <code><a href="#the-canvas-element">canvas</a></code> element to render a + page heading: if the desired presentation of the heading is + graphically intense, it should be marked up using appropriate + elements (typically <code><a href="#the-h1,-h2,-h3,-h4,-h5,-and-h6-elements">h1</a></code>) and then styled using CSS and + supporting technologies such as XBL.</p> + + <p>When authors use the <code><a href="#the-canvas-element">canvas</a></code> element, they must also + provide content that, when presented to the user, conveys + essentially the same function or purpose as the bitmap canvas. This + content may be placed as content of the <code><a href="#the-canvas-element">canvas</a></code> + element. The contents of the <code><a href="#the-canvas-element">canvas</a></code> element, if any, + are the element's <a href="#fallback-content">fallback content</a>.</p> + + <p>In interactive visual media, if <a href="#concept-n-script" title="concept-n-script">scripting is enabled</a> for the + <code><a href="#the-canvas-element">canvas</a></code> element, and if support for <code><a href="#the-canvas-element">canvas</a></code> + elements has been enabled, the <code><a href="#the-canvas-element">canvas</a></code> element + <a href="#represents">represents</a> <a href="#embedded-content">embedded content</a> consisting of + a dynamically created image.</p> + + <p>In non-interactive, static, visual media, if the + <code><a href="#the-canvas-element">canvas</a></code> element has been previously painted on (e.g. if + the page was viewed in an interactive visual medium and is now being + printed, or if some script that ran during the page layout process + painted on the element), then the <code><a href="#the-canvas-element">canvas</a></code> element + <a href="#represents">represents</a> <a href="#embedded-content">embedded content</a> with the + current image and size. Otherwise, the element represents its + <a href="#fallback-content">fallback content</a> instead.</p> + + <p>In non-visual media, and in visual media if <a href="#concept-n-noscript" title="concept-n-noscript">scripting is disabled</a> for the + <code><a href="#the-canvas-element">canvas</a></code> element or if support for <code><a href="#the-canvas-element">canvas</a></code> + elements has been disabled, the <code><a href="#the-canvas-element">canvas</a></code> element + <a href="#represents">represents</a> its <a href="#fallback-content">fallback content</a> + instead.</p> + + <!-- CANVAS-FOCUS-FALLBACK --> + <p>When a <code><a href="#the-canvas-element">canvas</a></code> element <a href="#represents">represents</a> + <a href="#embedded-content">embedded content</a>, the user can still focus descendants + of the <code><a href="#the-canvas-element">canvas</a></code> element (in the <a href="#fallback-content">fallback + content</a>). When an element is focused, it is the target of + keyboard interaction events (even though the element itself is not + visible). This allows authors to make an interactive canvas + keyboard-accessible: authors should have a one-to-one mapping of + interactive regions to focusable elements in the <a href="#fallback-content">fallback + content</a>. (Focus has no effect on mouse interaction + events.) <a href="#DOMEVENTS">[DOMEVENTS]</a></p> + + <p>The <code><a href="#the-canvas-element">canvas</a></code> element has two attributes to control the + size of the coordinate space: <dfn id="attr-canvas-width" title="attr-canvas-width"><code>width</code></dfn> and <dfn id="attr-canvas-height" title="attr-canvas-height"><code>height</code></dfn>. These + attributes, when specified, must have values that are <a href="#valid-non-negative-integer" title="valid non-negative integer">valid non-negative + integers</a>. <span class="impl">The <a href="#rules-for-parsing-non-negative-integers">rules for parsing + non-negative integers</a> must be used to obtain their numeric + values. If an attribute is missing, or if parsing its value returns + an error, then the default value must be used instead.</span> The + <code title="attr-canvas-width"><a href="#attr-canvas-width">width</a></code> attribute defaults to + 300, and the <code title="attr-canvas-height"><a href="#attr-canvas-height">height</a></code> + attribute defaults to 150.</p> + + <p>The intrinsic dimensions of the <code><a href="#the-canvas-element">canvas</a></code> element equal + the size of the coordinate space, with the numbers interpreted in + CSS pixels. However, the element can be sized arbitrarily by a + style sheet. During rendering, the image is scaled to fit this layout + size.</p> + + <div class="impl"> + + <p>The size of the coordinate space does not necessarily represent + the size of the actual bitmap that the user agent will use + internally or during rendering. On high-definition displays, for + instance, the user agent may internally use a bitmap with two device + pixels per unit in the coordinate space, so that the rendering + remains at high quality throughout.</p> + + <p>When the <code><a href="#the-canvas-element">canvas</a></code> element is created, and subsequently + whenever the <code title="attr-canvas-width"><a href="#attr-canvas-width">width</a></code> and <code title="attr-canvas-height"><a href="#attr-canvas-height">height</a></code> attributes are set (whether + to a new value or to the previous value), the bitmap and any + associated contexts must be cleared back to their initial state and + reinitialized with the newly specified coordinate space + dimensions.</p> + + <p>When the canvas is initialized, its bitmap must be cleared to + transparent black.</p> + + <p>The <dfn id="dom-canvas-width" title="dom-canvas-width"><code>width</code></dfn> and + <dfn id="dom-canvas-height" title="dom-canvas-height"><code>height</code></dfn> IDL + attributes must <a href="#reflect">reflect</a> the respective content + attributes of the same name, with the same defaults.</p> + + </div> + + <div class="example"> + <p>Only one square appears to be drawn in the following example:</p> + <pre> // canvas is a reference to a <canvas> element + var context = canvas.getContext('2d'); + context.fillRect(0,0,50,50); + canvas.setAttribute('width', '300'); // clears the canvas + context.fillRect(0,100,50,50); + canvas.width = canvas.width; // clears the canvas + context.fillRect(100,0,50,50); // only this square remains</pre> + </div> + + <hr/><dl class="domintro"><dt><var title="">context</var> = <var title="">canvas</var> . <code title="dom-canvas-getContext"><a href="#dom-canvas-getcontext">getContext</a></code>(<var title="">contextId</var> [, ... ])</dt> + + <dd> + + <p>Returns an object that exposes an API for drawing on the + canvas. The first argument specifies the desired API. Subsequent + arguments are handled by that API.</p> + +<!--2DCONTEXT--> + + <p>This specification defines the "<code title="canvas-context-2d"><a href="#canvas-context-2d">2d</a></code>" context below. There is also + a specification that defines a "<code title="canvas-context-webgl">webgl</code>" context. <a href="#refsWEBGL">[WEBGL]</a></p> + +<!--2DCONTEXT--> + + <p>The list of defined contexts is given on the <a href="http://wiki.whatwg.org/wiki/CanvasContexts">WHATWG Wiki + CanvasContexts page</a>. <a href="#refsWHATWGWIKI">[WHATWGWIKI]</a> + + </p><p>Returns null if the given context ID is not supported or if the + canvas has already been initialized with some other (incompatible) + context type (e.g. trying to get a "<code title="canvas-context-2d"><a href="#canvas-context-2d">2d</a></code>" context after getting a + "<code title="canvas-context-webgl">webgl</code>" context).</p> + + </dd> + + </dl><div class="impl"> + + <p>A <code><a href="#the-canvas-element">canvas</a></code> element can have a <dfn id="primary-context">primary + context</dfn>, which is the first context to have been obtained for + that element. When created, a <code><a href="#the-canvas-element">canvas</a></code> element must not + have a <a href="#primary-context">primary context</a>.</p> + + + <p>The <dfn id="dom-canvas-getcontext" title="dom-canvas-getContext"><code>getContext(<var title="">contextId</var>, <var title="">args...</var>)</code></dfn> + method of the <code><a href="#the-canvas-element">canvas</a></code> element, when invoked, must run + the following steps:</p> + + <ol><li><p>Let <var title="">contextId</var> be the first argument to + the method.</p></li> + + <li> + + <p>If <var title="">contextId</var> is not the name of a context + supported by the user agent, return null and abort these + steps.</p> + + <p class="note">An example of this would be a user agent that + theoretically supports the "<code title="canvas-context-webgl">webgl</code>" 3D context, in the case + where the platform does not have hardware support for OpenGL and + the user agent does not have a software OpenGL implementation. + Despite the user agent recognising the "<code title="canvas-context-webgl">webgl</code>" name, it would return + null at this step because that context is not, in practice, + supported at the time of the call.</p> + + </li> + + <li><p>If the element has a <a href="#primary-context">primary context</a> and that + context's entry in the <a href="http://wiki.whatwg.org/wiki/CanvasContexts">WHATWG Wiki + CanvasContexts page</a> does not list <var title="">contextId</var> + as a context with which it is compatible, return null and abort + these steps. <a href="#refsWHATWGWIKI">[WHATWGWIKI]</a></p></li> + + <li><p>If the element does not have a <a href="#primary-context">primary context</a>, + let the element's <a href="#primary-context">primary context</a> be <var title="">contextId</var>.</p></li> + + <li><p>If the <code title="dom-canvas-getContext"><a href="#dom-canvas-getcontext">getContext()</a></code> method has + already been invoked on this element for the same <var title="">contextId</var>, return the same object as was returned + that time, and abort these steps. The additional arguments are + ignored.</p></li> + + <li><p><dfn id="getcontext-return" title="getContext-return">Return a new object for <var title="">contextId</var></dfn>, as defined by the specification + given for <var title="">contextId</var>'s entry in the <a href="http://wiki.whatwg.org/wiki/CanvasContexts">WHATWG Wiki + CanvasContexts page</a>. <a href="#refsWHATWGWIKI">[WHATWGWIKI]</a></p></li> + + </ol><p>New context types may be registered in the <a href="http://wiki.whatwg.org/wiki/CanvasContexts">WHATWG Wiki + CanvasContexts page</a>. <a href="#refsWHATWGWIKI">[WHATWGWIKI]</a></p> + + <p>Anyone is free to edit the WHATWG Wiki CanvasContexts page at any + time to add a new context type. These new context types must be + specified with the following information:</p> + + <dl><dt>Keyword</dt> + + <dd><p>The value of <var title="">contextID</var> that will return + the object for the new API.</p></dd> + + + <dt>Specification</dt> + + <dd><p>A link to a formal specification of the context type's + API. It could be another page on the Wiki, or a link to an external + page. If the type does not have a formal specification, an informal + description can be substituted until such time as a formal + specification is available.</p></dd> + + + <dt>Compatible with</dt> + + <dd><p>The list of context types that are compatible with this one + (i.e. that operate on the same underlying bitmap). This list must + be transitive and symmetric; if one context type is defined as + compatible with another, then all types it is compatible with must + be compatible with all types the other is compatible with.</p></dd> + + </dl><p>Vendors may also define experimental contexts using the syntax + <code><var title="">vendorname</var>-<var title="">context</var></code>, for example, + <code>moz-3d</code>. Such contexts should be registered in the + WHATWG Wiki CanvasContexts page.</p> + + </div> + + <hr/><dl class="domintro"><dt><var title="">url</var> = <var title="">canvas</var> . <code title="dom-canvas-toDataURL"><a href="#dom-canvas-todataurl">toDataURL</a></code>( [ <var title="">type</var>, ... ])</dt> + + <dd> + + <p>Returns a <a href="#data-protocol" title="data protocol"><code title="">data:</code> URL</a> for the image in the canvas.</p> + + <p>The first argument, if provided, controls the type of the image + to be returned (e.g. PNG or JPEG). The default is <code title="">image/png</code>; that type is also used if the given + type isn't supported. The other arguments are specific to the + type, and control the way that the image is generated, as given in + the table below.</p> + + <p>When trying to use types other than "<code>image/png</code>", + authors can check if the image was really returned in the + requested format by checking to see if the returned string starts + with one of the exact strings "<code title="">data:image/png,</code>" or "<code title="">data:image/png;</code>". If it does, the image is PNG, + and thus the requested type was not supported. (The one exception + to this is if the canvas has either no height or no width, in + which case the result might simply be "<code title="">data:,</code>".)</p> + + </dd> + + <dt><var title="">canvas</var> . <code title="dom-canvas-toBlob"><a href="#dom-canvas-toblob">toBlob</a></code>(<var title="">callback</var> [, <var title="">type</var>, ... ])</dt> + + <dd> + + <p>Creates a <code><a href="#blob">Blob</a></code> object representing a file + containing the image in the canvas, and invokes a callback with a + handle to that object.</p> + + <p>The second argument, if provided, controls the type of the + image to be returned (e.g. PNG or JPEG). The default is <code title="">image/png</code>; that type is also used if the given + type isn't supported. The other arguments are specific to the + type, and control the way that the image is generated, as given in + the table below.</p> + + </dd> + + </dl><div class="impl"> + + <p>The <dfn id="dom-canvas-todataurl" title="dom-canvas-toDataURL"><code>toDataURL()</code></dfn> method + must run the following steps:</p> + + <ol><li><p>If the canvas has no pixels (i.e. either its horizontal + dimension or its vertical dimension is zero) then return the string + "<code title="">data:,</code>" and abort these steps. (This is the + shortest <a href="#data-protocol" title="data protocol"><code title="">data:</code> + URL</a>; it represents the empty string in a <code title="">text/plain</code> resource.)</p></li> + + <li><p>Let <var title="">file</var> be <a href="#a-serialization-of-the-image-as-a-file">a serialization of the + image as a file</a>, using the method's arguments (if any) as + the <var title="">arguments</var>.</p></li> + + <li><p>Return a <a href="#data-protocol" title="data protocol"><code title="">data:</code> URL</a> representing <var title="">file</var>. <a href="#refsRFC2397">[RFC2397]</a></p> + + <!-- should we explicitly require the URL to be base64-encoded and + not have any parameters, to ensure the same exact URL is generated + in each browser? --> + + </li></ol><p>The <dfn id="dom-canvas-toblob" title="dom-canvas-toBlob"><code>toBlob()</code></dfn> method + must run the following steps:</p> + + <ol><li><p>Let <var title="">callback</var> be the first + argument.</p></li> + + <li><p>Let <var title="">arguments</var> be the second and + subsequent arguments to the method, if any.</p></li> + + <li><p>Let <var title="">file</var> be <a href="#a-serialization-of-the-image-as-a-file">a serialization of the + image as a file</a>, using <var title="">arguments</var>.</p></li> + + <li><p>Return, but continue running these steps + asynchronously.</p></li> + + <li><p>If <var title="">callback</var> is null, abort these + steps.</p></li> + + <li><p><a href="#queue-a-task">Queue a task</a> to invoke the + <code>FileCallback</code> <var title="">callback</var> with a + <code><a href="#blob">Blob</a></code> object representing <var title="">file</var> as + its argument. The <a href="#task-source">task source</a> for this task is the + <dfn id="canvas-blob-serialization-task-source">canvas blob serialization task source</dfn>. <a href="#refsFILESYSTEMAPI">[FILESYSTEMAPI]</a> <a href="#refsFILEAPI">[FILEAPI]</a> </p></li> + + </ol><p>When a user agent is to create <dfn id="a-serialization-of-the-image-as-a-file">a serialization of the image + as a file</dfn>, optionally with some given <var title="">arguments</var>, it must create an image file in the format + given by the first value of <var title="">arguments</var>, or, if + there are no <var title="">arguments</var>, in the PNG format. <a href="#refsPNG">[PNG]</a></p> + + <p>If <var title="">arguments</var> is not empty, the first value + must be interpreted as a <a href="#mime-type" title="MIME type">MIME type</a> + giving the format to use. If the type has any parameters, it must be + treated as not supported.</p> + + <p class="example">For example, the value "<code>image/png</code>" would + mean to generate a PNG image, the value "<code>image/jpeg</code>" + would mean to generate a JPEG image, and the value + "<code>image/svg+xml</code>" would mean to generate an SVG image + (which would probably require that the implementation actually keep + enough information to reliably render an SVG image from the canvas).</p> + + <p>User agents must support PNG ("<code>image/png</code>"). User + agents may support other types. If the user agent does not support + the requested type, it must create the file using the PNG format. <a href="#refsPNG">[PNG]</a></p> + + <p>User agents must <a href="#converted-to-ascii-lowercase" title="converted to ASCII + lowercase">convert the provided type to ASCII lowercase</a> + before establishing if they support that type.</p> + + <p>For image types that do not support an alpha channel, the + serialized image must be the canvas image composited onto a solid + black background using the source-over operator.</p> + + <p>If the first argument in <var title="">arguments</var> gives a + type corresponding to one of the types given in the first column of + the following table, and the user agent supports that type, then the + subsequent arguments, if any, must be treated as described in the + second cell of that row.</p> + + </div> + + <table><thead><tr><th> Type </th><th> Other arguments </th><th> Reference + </th></tr></thead><tbody><tr><td> <code>image/jpeg</code> + </td><td> The second argument<span class="impl">, if it</span> is a + number in the range 0.0 to 1.0 inclusive<span class="impl">, must + be</span> treated as the desired quality level. <span class="impl">If it is not a number or is outside that range, the + user agent must use its default value, as if the argument had + been omitted.</span> + </td><td> <a href="#refsJPEG">[JPEG]</a> + </td></tr></tbody></table><div class="impl"> + + <p>For the purposes of these rules, an argument is considered to be + a number if it is converted to an IDL double value by the rules for + handling arguments of type <code title="">any</code> in the Web IDL + specification. <a href="#refsWEBIDL">[WEBIDL]</a></p> + + <p>Other arguments must be ignored and must not cause the user agent + to raise an exception. A future version of this specification will + probably define other parameters to be passed to these methods to + allow authors to more carefully control compression settings, image + metadata, etc.</p> + + </div> + + <!--2DCONTEXT--> + + <div data-component="HTML Canvas 2D Context (editor: Ian Hickson)"> + + <h5 id="2dcontext"><span class="secno">4.8.11.1 </span>The 2D context</h5> + + <!-- v2: we're on v4.1. suggestions for next version are marked v5, v6. --> + + + + <p>This specification defines the <dfn id="canvas-context-2d" title="canvas-context-2d"><code>2d</code></dfn> context type, whose + API is implemented using the <code><a href="#canvasrenderingcontext2d">CanvasRenderingContext2D</a></code> + interface.</p> + + <div class="impl"> + + <p>When the <code title="dom-canvas-getContext"><a href="#dom-canvas-getcontext">getContext()</a></code> + method of a <code><a href="#the-canvas-element">canvas</a></code> element is to <a href="#getcontext-return" title="getContext-return">return a new object for the <var title="">contextId</var></a> <code title="canvas-context-2d"><a href="#canvas-context-2d">2d</a></code>, the user agent must return a + new <code><a href="#canvasrenderingcontext2d">CanvasRenderingContext2D</a></code> object. Any additional + arguments are ignored.</p> + + </div> + + <p>The 2D context represents a flat Cartesian surface whose origin + (0,0) is at the top left corner, with the coordinate space having + <var title="">x</var> values increasing when going right, and <var title="">y</var> values increasing when going down.</p> + + <pre class="idl">interface <dfn id="canvasrenderingcontext2d">CanvasRenderingContext2D</dfn> { + + // back-reference to the canvas + readonly attribute <a href="#htmlcanvaselement">HTMLCanvasElement</a> <a href="#dom-context-2d-canvas" title="dom-context-2d-canvas">canvas</a>; + + // state + void <a href="#dom-context-2d-save" title="dom-context-2d-save">save</a>(); // push state on state stack + void <a href="#dom-context-2d-restore" title="dom-context-2d-restore">restore</a>(); // pop state stack and restore state +<!-- + // v6 we've also received requests for: + attribute boolean <span title="dom-context-2d-forceHighQuality">forceHighQuality</span> // (default false) + // when enabled, it would prevent the UA from falling back on lower-quality but faster rendering routines + // useful e.g. for when an image manipulation app uses <canvas> both for UI previews and the actual work +--> + // transformations (default transform is the identity matrix) + void <a href="#dom-context-2d-scale" title="dom-context-2d-scale">scale</a>(in double x, in double y); + void <a href="#dom-context-2d-rotate" title="dom-context-2d-rotate">rotate</a>(in double angle); + void <a href="#dom-context-2d-translate" title="dom-context-2d-translate">translate</a>(in double x, in double y); + void <a href="#dom-context-2d-transform" title="dom-context-2d-transform">transform</a>(in double a, in double b, in double c, in double d, in double e, in double f); + void <a href="#dom-context-2d-settransform" title="dom-context-2d-setTransform">setTransform</a>(in double a, in double b, in double c, in double d, in double e, in double f); +<!-- + // v6 we've also received requests for: + void skew(...); + void reflect(...); // or mirror(...) +--> + // compositing + attribute double <a href="#dom-context-2d-globalalpha" title="dom-context-2d-globalAlpha">globalAlpha</a>; // (default 1.0) + attribute DOMString <a href="#dom-context-2d-globalcompositeoperation" title="dom-context-2d-globalCompositeOperation">globalCompositeOperation</a>; // (default source-over) +<!-- + // v6 we've also received requests for: + - turning off antialiasing to avoid seams when patterns are painted next to each other + - might be better to overdraw? + - might be better to just draw at a higher res then downsample, like for 3d? + - nested layers + - the ability to composite an entire set of drawing operations with one shadow all at once + http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2008-August/015567.html +--> + // colors and styles + attribute any <a href="#dom-context-2d-strokestyle" title="dom-context-2d-strokeStyle">strokeStyle</a>; // (default black) + attribute any <a href="#dom-context-2d-fillstyle" title="dom-context-2d-fillStyle">fillStyle</a>; // (default black) + <a href="#canvasgradient">CanvasGradient</a> <a href="#dom-context-2d-createlineargradient" title="dom-context-2d-createLinearGradient">createLinearGradient</a>(in double x0, in double y0, in double x1, in double y1); + <a href="#canvasgradient">CanvasGradient</a> <a href="#dom-context-2d-createradialgradient" title="dom-context-2d-createRadialGradient">createRadialGradient</a>(in double x0, in double y0, in double r0, in double x1, in double y1, in double r1); + <a href="#canvaspattern">CanvasPattern</a> <a href="#dom-context-2d-createpattern" title="dom-context-2d-createPattern">createPattern</a>(in <a href="#htmlimageelement">HTMLImageElement</a> image, in DOMString repetition); + <a href="#canvaspattern">CanvasPattern</a> <a href="#dom-context-2d-createpattern" title="dom-context-2d-createPattern">createPattern</a>(in <a href="#htmlcanvaselement">HTMLCanvasElement</a> image, in DOMString repetition); + <a href="#canvaspattern">CanvasPattern</a> <a href="#dom-context-2d-createpattern" title="dom-context-2d-createPattern">createPattern</a>(in <a href="#htmlvideoelement">HTMLVideoElement</a> image, in DOMString repetition); + + // line caps/joins + attribute double <a href="#dom-context-2d-linewidth" title="dom-context-2d-lineWidth">lineWidth</a>; // (default 1) + attribute DOMString <a href="#dom-context-2d-linecap" title="dom-context-2d-lineCap">lineCap</a>; // "butt", "round", "square" (default "butt") + attribute DOMString <a href="#dom-context-2d-linejoin" title="dom-context-2d-lineJoin">lineJoin</a>; // "round", "bevel", "miter" (default "miter") + attribute double <a href="#dom-context-2d-miterlimit" title="dom-context-2d-miterLimit">miterLimit</a>; // (default 10) + + // shadows + attribute double <a href="#dom-context-2d-shadowoffsetx" title="dom-context-2d-shadowOffsetX">shadowOffsetX</a>; // (default 0) + attribute double <a href="#dom-context-2d-shadowoffsety" title="dom-context-2d-shadowOffsetY">shadowOffsetY</a>; // (default 0) + attribute double <a href="#dom-context-2d-shadowblur" title="dom-context-2d-shadowBlur">shadowBlur</a>; // (default 0) + attribute DOMString <a href="#dom-context-2d-shadowcolor" title="dom-context-2d-shadowColor">shadowColor</a>; // (default transparent black) + + // rects + void <a href="#dom-context-2d-clearrect" title="dom-context-2d-clearRect">clearRect</a>(in double x, in double y, in double w, in double h); + void <a href="#dom-context-2d-fillrect" title="dom-context-2d-fillRect">fillRect</a>(in double x, in double y, in double w, in double h); + void <a href="#dom-context-2d-strokerect" title="dom-context-2d-strokeRect">strokeRect</a>(in double x, in double y, in double w, in double h); + + // path API + void <a href="#dom-context-2d-beginpath" title="dom-context-2d-beginPath">beginPath</a>(); + void <a href="#dom-context-2d-closepath" title="dom-context-2d-closePath">closePath</a>(); + void <a href="#dom-context-2d-moveto" title="dom-context-2d-moveTo">moveTo</a>(in double x, in double y); + void <a href="#dom-context-2d-lineto" title="dom-context-2d-lineTo">lineTo</a>(in double x, in double y); + void <a href="#dom-context-2d-quadraticcurveto" title="dom-context-2d-quadraticCurveTo">quadraticCurveTo</a>(in double cpx, in double cpy, in double x, in double y); + void <a href="#dom-context-2d-beziercurveto" title="dom-context-2d-bezierCurveTo">bezierCurveTo</a>(in double cp1x, in double cp1y, in double cp2x, in double cp2y, in double x, in double y); + void <a href="#dom-context-2d-arcto" title="dom-context-2d-arcTo">arcTo</a>(in double x1, in double y1, in double x2, in double y2, in double radius); + void <a href="#dom-context-2d-rect" title="dom-context-2d-rect">rect</a>(in double x, in double y, in double w, in double h); + void <a href="#dom-context-2d-arc" title="dom-context-2d-arc">arc</a>(in double x, in double y, in double radius, in double startAngle, in double endAngle, in optional boolean anticlockwise); + void <a href="#dom-context-2d-fill" title="dom-context-2d-fill">fill</a>(); + void <a href="#dom-context-2d-stroke" title="dom-context-2d-stroke">stroke</a>(); + void <a href="#dom-context-2d-drawsystemfocusring" title="dom-context-2d-drawSystemFocusRing">drawSystemFocusRing</a>(in <a href="#element">Element</a> element); + boolean <a href="#dom-context-2d-drawcustomfocusring" title="dom-context-2d-drawCustomFocusRing">drawCustomFocusRing</a>(in <a href="#element">Element</a> element); + void <a href="#dom-context-2d-scrollpathintoview" title="dom-context-2d-scrollPathIntoView">scrollPathIntoView</a>(); + void <a href="#dom-context-2d-clip" title="dom-context-2d-clip">clip</a>(); + boolean <a href="#dom-context-2d-ispointinpath" title="dom-context-2d-isPointInPath">isPointInPath</a>(in double x, in double y); + + // text + attribute DOMString <a href="#dom-context-2d-font" title="dom-context-2d-font">font</a>; // (default 10px sans-serif) + attribute DOMString <a href="#dom-context-2d-textalign" title="dom-context-2d-textAlign">textAlign</a>; // "start", "end", "left", "right", "center" (default: "start") + attribute DOMString <a href="#dom-context-2d-textbaseline" title="dom-context-2d-textBaseline">textBaseline</a>; // "top", "hanging", "middle", "alphabetic", "ideographic", "bottom" (default: "alphabetic") + void <a href="#dom-context-2d-filltext" title="dom-context-2d-fillText">fillText</a>(in DOMString text, in double x, in double y, in optional double maxWidth); + void <a href="#dom-context-2d-stroketext" title="dom-context-2d-strokeText">strokeText</a>(in DOMString text, in double x, in double y, in optional double maxWidth);<!-- v6DVT + void <span title="dom-context-2d-fillVerticalText">fillVerticalText</span>(in DOMString text, in double x, in double y, in optional double maxHeight); + void <span title="dom-context-2d-strokeVerticalText">strokeVerticalText</span>(in DOMString text, in double x, in double y, in optional double maxHeight); --> + <a href="#textmetrics">TextMetrics</a> <a href="#dom-context-2d-measuretext" title="dom-context-2d-measureText">measureText</a>(in DOMString text); + + // drawing images + void <a href="#dom-context-2d-drawimage" title="dom-context-2d-drawImage">drawImage</a>(in <a href="#htmlimageelement">HTMLImageElement</a> image, in double dx, in double dy); + void <a href="#dom-context-2d-drawimage" title="dom-context-2d-drawImage">drawImage</a>(in <a href="#htmlimageelement">HTMLImageElement</a> image, in double dx, in double dy, in double dw, in double dh); + void <a href="#dom-context-2d-drawimage" title="dom-context-2d-drawImage">drawImage</a>(in <a href="#htmlimageelement">HTMLImageElement</a> image, in double sx, in double sy, in double sw, in double sh, in double dx, in double dy, in double dw, in double dh); + void <a href="#dom-context-2d-drawimage" title="dom-context-2d-drawImage">drawImage</a>(in <a href="#htmlcanvaselement">HTMLCanvasElement</a> image, in double dx, in double dy); + void <a href="#dom-context-2d-drawimage" title="dom-context-2d-drawImage">drawImage</a>(in <a href="#htmlcanvaselement">HTMLCanvasElement</a> image, in double dx, in double dy, in double dw, in double dh); + void <a href="#dom-context-2d-drawimage" title="dom-context-2d-drawImage">drawImage</a>(in <a href="#htmlcanvaselement">HTMLCanvasElement</a> image, in double sx, in double sy, in double sw, in double sh, in double dx, in double dy, in double dw, in double dh); + void <a href="#dom-context-2d-drawimage" title="dom-context-2d-drawImage">drawImage</a>(in <a href="#htmlvideoelement">HTMLVideoElement</a> image, in double dx, in double dy); + void <a href="#dom-context-2d-drawimage" title="dom-context-2d-drawImage">drawImage</a>(in <a href="#htmlvideoelement">HTMLVideoElement</a> image, in double dx, in double dy, in double dw, in double dh); + void <a href="#dom-context-2d-drawimage" title="dom-context-2d-drawImage">drawImage</a>(in <a href="#htmlvideoelement">HTMLVideoElement</a> image, in double sx, in double sy, in double sw, in double sh, in double dx, in double dy, in double dw, in double dh); + + // pixel manipulation + <a href="#imagedata">ImageData</a> <a href="#dom-context-2d-createimagedata" title="dom-context-2d-createImageData">createImageData</a>(in double sw, in double sh); + <a href="#imagedata">ImageData</a> <a href="#dom-context-2d-createimagedata" title="dom-context-2d-createImageData">createImageData</a>(in <a href="#imagedata">ImageData</a> imagedata); + <a href="#imagedata">ImageData</a> <a href="#dom-context-2d-getimagedata" title="dom-context-2d-getImageData">getImageData</a>(in double sx, in double sy, in double sw, in double sh); + void <a href="#dom-context-2d-putimagedata" title="dom-context-2d-putImageData">putImageData</a>(in <a href="#imagedata">ImageData</a> imagedata, in double dx, in double dy); + void <a href="#dom-context-2d-putimagedata" title="dom-context-2d-putImageData">putImageData</a>(in <a href="#imagedata">ImageData</a> imagedata, in double dx, in double dy, in double dirtyX, in double dirtyY, in double dirtyWidth, in double dirtyHeight); +}; + +interface <dfn id="canvasgradient">CanvasGradient</dfn> { + // opaque object + void <a href="#dom-canvasgradient-addcolorstop" title="dom-canvasgradient-addColorStop">addColorStop</a>(in double offset, in DOMString color); +}; + +interface <dfn id="canvaspattern">CanvasPattern</dfn> { + // opaque object +}; + +interface <dfn id="textmetrics">TextMetrics</dfn> { + readonly attribute double <a href="#dom-textmetrics-width" title="dom-textmetrics-width">width</a>; +}; + +interface <dfn id="imagedata">ImageData</dfn> { + readonly attribute unsigned long <a href="#dom-imagedata-width" title="dom-imagedata-width">width</a>; + readonly attribute unsigned long <a href="#dom-imagedata-height" title="dom-imagedata-height">height</a>; + readonly attribute <a href="#canvaspixelarray">CanvasPixelArray</a> <a href="#dom-imagedata-data" title="dom-imagedata-data">data</a>; +}; + +interface <dfn id="canvaspixelarray">CanvasPixelArray</dfn> { + readonly attribute unsigned long <a href="#dom-canvaspixelarray-length" title="dom-canvaspixelarray-length">length</a>; + <a href="#dom-canvaspixelarray-get" title="dom-CanvasPixelArray-get">getter</a> octet (in unsigned long index); + <a href="#dom-canvaspixelarray-set" title="dom-CanvasPixelArray-set">setter</a> void (in unsigned long index, [Clamp] in octet value); +};</pre> + + <dl class="domintro"><dt><var title="">context</var> . <code title="dom-context-2d-canvas"><a href="#dom-context-2d-canvas">canvas</a></code></dt> + + <dd> + + <p>Returns the <code><a href="#the-canvas-element">canvas</a></code> element.</p> + + </dd> + + </dl><div class="impl"> + + <p>The <dfn id="dom-context-2d-canvas" title="dom-context-2d-canvas"><code>canvas</code></dfn> + attribute must return the <code><a href="#the-canvas-element">canvas</a></code> element that the + context paints on.</p> + + <p>Except where otherwise specified, for the 2D context interface, + any method call with a numeric argument whose value is infinite or a + NaN value must be ignored.</p> + + <!-- + Philip Taylor wrote: + > My experience with some 3d canvas code is that infinities come up in + > naturally harmless places, e.g. having a function that scales by x then + > translates by 1/x and wanting it to work when x=0 (which ought to draw + > nothing, since anything it draws is zero pixels wide), and it's a bit + > annoying to track down and fix those issues, so I'd probably like it if + > they were harmless in canvas methods. Opera appears to silently not draw + > anything if the transformation matrix is not finite, but Firefox throws + > exceptions when passing in non-finite arguments. + --> + + <p>Whenever the CSS value <code title="">currentColor</code> is used + as a color in this API, the "computed value of the 'color' property" + for the purposes of determining the computed value of the <code title="">currentColor</code> keyword is the computed value of the + 'color' property on the element in question at the time that the + color is specified (e.g. when the appropriate attribute is set, or + when the method is called; not when the color is rendered or + otherwise used). If the computed value of the 'color' property is + undefined for a particular case (e.g. because the element is not + <a href="#in-a-document">in a <code>Document</code></a>), then the "computed value + of the 'color' property" for the purposes of determining the + computed value of the <code title="">currentColor</code> keyword is + fully opaque black. <a href="#refsCSSCOLOR">[CSSCOLOR]</a></p> + + <p>In the case of <code title="dom-canvasgradient-addColorStop"><a href="#dom-canvasgradient-addcolorstop">addColorStop()</a></code> on + <code><a href="#canvasgradient">CanvasGradient</a></code>, the "computed value of the 'color' + property" for the purposes of determining the computed value of the + <code title="">currentColor</code> keyword is always fully opaque + black (there is no associated element). <a href="#refsCSSCOLOR">[CSSCOLOR]</a></p> + + <p class="note">This is because <code><a href="#canvasgradient">CanvasGradient</a></code> objects + are <code><a href="#the-canvas-element">canvas</a></code>-neutral — a + <code><a href="#canvasgradient">CanvasGradient</a></code> object created by one + <code><a href="#the-canvas-element">canvas</a></code> can be used by another, and there is therefore + no way to know which is the "element in question" at the time that + the color is specified.</p> + + </div> + + + + <h6 id="the-canvas-state"><span class="secno">4.8.11.1.1 </span>The canvas state</h6> + + <p>Each context maintains a stack of drawing states. <dfn id="drawing-state" title="drawing state">Drawing states</dfn> consist of:</p> + + <ul class="brief"><li>The current <a href="#transformations" title="dom-context-2d-transformation">transformation matrix</a>.</li> + <li>The current <a href="#clipping-region">clipping region</a>.</li> + <li>The current values of the following attributes: <code title="dom-context-2d-strokeStyle"><a href="#dom-context-2d-strokestyle">strokeStyle</a></code>, <code title="dom-context-2d-fillStyle"><a href="#dom-context-2d-fillstyle">fillStyle</a></code>, <code title="dom-context-2d-globalAlpha"><a href="#dom-context-2d-globalalpha">globalAlpha</a></code>, <code title="dom-context-2d-lineWidth"><a href="#dom-context-2d-linewidth">lineWidth</a></code>, <code title="dom-context-2d-lineCap"><a href="#dom-context-2d-linecap">lineCap</a></code>, <code title="dom-context-2d-lineJoin"><a href="#dom-context-2d-linejoin">lineJoin</a></code>, <code title="dom-context-2d-miterLimit"><a href="#dom-context-2d-miterlimit">miterLimit</a></code>, <code title="dom-context-2d-shadowOffsetX"><a href="#dom-context-2d-shadowoffsetx">shadowOffsetX</a></code>, <code title="dom-context-2d-shadowOffsetY"><a href="#dom-context-2d-shadowoffsety">shadowOffsetY</a></code>, <code title="dom-context-2d-shadowBlur"><a href="#dom-context-2d-shadowblur">shadowBlur</a></code>, <code title="dom-context-2d-shadowColor"><a href="#dom-context-2d-shadowcolor">shadowColor</a></code>, <code title="dom-context-2d-globalCompositeOperation"><a href="#dom-context-2d-globalcompositeoperation">globalCompositeOperation</a></code>, <code title="dom-context-2d-font"><a href="#dom-context-2d-font">font</a></code>, <code title="dom-context-2d-textAlign"><a href="#dom-context-2d-textalign">textAlign</a></code>, <code title="dom-context-2d-textBaseline"><a href="#dom-context-2d-textbaseline">textBaseline</a></code>.</li> + </ul><p class="note">The current path and the current bitmap are not part + of the drawing state. The current path is persistent, and can only + be reset using the <code title="dom-context-2d-beginPath"><a href="#dom-context-2d-beginpath">beginPath()</a></code> method. The + current bitmap is a property of the canvas, not the context.</p> + + <dl class="domintro"><dt><var title="">context</var> . <code title="dom-context-2d-save"><a href="#dom-context-2d-save">save</a></code>()</dt> + + <dd> + + <p>Pushes the current state onto the stack.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-restore"><a href="#dom-context-2d-restore">restore</a></code>()</dt> + + <dd> + + <p>Pops the top state on the stack, restoring the context to that state.</p> + + </dd> + + </dl><div class="impl"> + + <p>The <dfn id="dom-context-2d-save" title="dom-context-2d-save"><code>save()</code></dfn> + method must push a copy of the current drawing state onto the + drawing state stack.</p> + + <p>The <dfn id="dom-context-2d-restore" title="dom-context-2d-restore"><code>restore()</code></dfn> method + must pop the top entry in the drawing state stack, and reset the + drawing state it describes. If there is no saved state, the method + must do nothing.</p> + + <!-- v6 +idea from Mihai: +> 5. Drawing states should be saveable with IDs, and for easier restoring. +> +> save(id) +> restore(id) +> +> If id is not provided, then save() works as defined now. The same for +> restore(). +> +> Currently, it's not trivial to save and restore a specific state. +...and from Philip: +> I think a more convenient syntax would be: +> var state = ctx.save(); +> ctx.restore(state); +> But how would it interact with normal calls to ctx.restore()? + --> + + </div> + + + <h6 id="transformations"><span class="secno">4.8.11.1.2 </span><dfn title="dom-context-2d-transformation">Transformations</dfn></h6> + + <p>The transformation matrix is applied to coordinates when creating + shapes and paths.</p> <!-- conformance criteria for actual drawing + are described in the various sections below --> + + <div class="impl"> + + <p>When the context is created, the transformation matrix must + initially be the identity transform. It may then be adjusted using + the transformation methods.</p> + + <p>The transformations must be performed in reverse order. For + instance, if a scale transformation that doubles the width is + applied, followed by a rotation transformation that rotates drawing + operations by a quarter turn, and a rectangle twice as wide as it is + tall is then drawn on the canvas, the actual result will be a + square.</p> + + </div> + + <dl class="domintro"><dt><var title="">context</var> . <code title="dom-context-2d-scale"><a href="#dom-context-2d-scale">scale</a></code>(<var title="">x</var>, <var title="">y</var>)</dt> + + <dd> + + <p>Changes the transformation matrix to apply a scaling transformation with the given characteristics.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-rotate"><a href="#dom-context-2d-rotate">rotate</a></code>(<var title="">angle</var>)</dt> + + <dd> + + <p>Changes the transformation matrix to apply a rotation transformation with the given characteristics. The angle is in radians.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-translate"><a href="#dom-context-2d-translate">translate</a></code>(<var title="">x</var>, <var title="">y</var>)</dt> + + <dd> + + <p>Changes the transformation matrix to apply a translation transformation with the given characteristics.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-transform"><a href="#dom-context-2d-transform">transform</a></code>(<var title="">a</var>, <var title="">b</var>, <var title="">c</var>, <var title="">d</var>, <var title="">e</var>, <var title="">f</var>)</dt> + + <dd> + + <p>Changes the transformation matrix to apply the matrix given by the arguments as described below.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-setTransform"><a href="#dom-context-2d-settransform">setTransform</a></code>(<var title="">a</var>, <var title="">b</var>, <var title="">c</var>, <var title="">d</var>, <var title="">e</var>, <var title="">f</var>)</dt> + + <dd> + + <p>Changes the transformation matrix <em>to</em> the matrix given by the arguments as described below.</p> + + </dd> + + </dl><div class="impl"> + + <p>The <dfn id="dom-context-2d-scale" title="dom-context-2d-scale"><code>scale(<var title="">x</var>, <var title="">y</var>)</code></dfn> method must + add the scaling transformation described by the arguments to the + transformation matrix. The <var title="">x</var> argument represents + the scale factor in the horizontal direction and the <var title="">y</var> argument represents the scale factor in the + vertical direction. The factors are multiples.</p> + + <p>The <dfn id="dom-context-2d-rotate" title="dom-context-2d-rotate"><code>rotate(<var title="">angle</var>)</code></dfn> method must add the rotation + transformation described by the argument to the transformation + matrix. The <var title="">angle</var> argument represents a + clockwise rotation angle expressed in radians.</p> + + <p>The <dfn id="dom-context-2d-translate" title="dom-context-2d-translate"><code>translate(<var title="">x</var>, <var title="">y</var>)</code></dfn> method must + add the translation transformation described by the arguments to the + transformation matrix. The <var title="">x</var> argument represents + the translation distance in the horizontal direction and the <var title="">y</var> argument represents the translation distance in the + vertical direction. The arguments are in coordinate space units.</p> + + <p>The <dfn id="dom-context-2d-transform" title="dom-context-2d-transform"><code>transform(<var title="">a</var>, <var title="">b</var>, <var title="">c</var>, <var title="">d</var>, <var title="">e</var>, <var title="">f</var>)</code></dfn> method must replace the current + transformation matrix with the result of multiplying the current + transformation matrix with the matrix described by:</p> + + </div> + + <table class="matrix"><tbody><tr><td><var title="">a</var></td> + <td><var title="">c</var></td> + <td><var title="">e</var></td> + </tr><tr><td><var title="">b</var></td> + <td><var title="">d</var></td> + <td><var title="">f</var></td> + </tr><tr><td>0</td> + <td>0</td> + <td>1</td> + </tr></tbody></table><p class="note">The arguments <var title="">a</var>, <var title="">b</var>, <var title="">c</var>, <var title="">d</var>, <var title="">e</var>, and <var title="">f</var> are sometimes called + <var title="">m11</var>, <var title="">m12</var>, <var title="">m21</var>, <var title="">m22</var>, <var title="">dx</var>, + and <var title="">dy</var> or <var title="">m11</var>, <var title="">m21</var>, <var title="">m12</var>, <var title="">m22</var>, <var title="">dx</var>, and <var title="">dy</var>. Care should be taken in particular with the order + of the second and third arguments (<var title="">b</var> and <var title="">c</var>) as their order varies from API to API and APIs + sometimes use the notation <var title="">m12</var>/<var title="">m21</var> and sometimes <var title="">m21</var>/<var title="">m12</var> for those positions.</p> + + <div class="impl"> + + <p>The <dfn id="dom-context-2d-settransform" title="dom-context-2d-setTransform"><code>setTransform(<var title="">a</var>, <var title="">b</var>, <var title="">c</var>, <var title="">d</var>, <var title="">e</var>, + <var title="">f</var>)</code></dfn> method must reset the current + transform to the identity matrix, and then invoke the <code><a href="#dom-context-2d-transform" title="dom-context-2d-transform">transform</a>(<var title="">a</var>, <var title="">b</var>, <var title="">c</var>, <var title="">d</var>, <var title="">e</var>, + <var title="">f</var>)</code> method with the same arguments.</p> + + </div> + + + <h6 id="compositing"><span class="secno">4.8.11.1.3 </span>Compositing</h6> + + <dl class="domintro"><dt><var title="">context</var> . <code title="dom-context-2d-globalAlpha"><a href="#dom-context-2d-globalalpha">globalAlpha</a></code> [ = <var title="">value</var> ]</dt> + + <dd> + + <p>Returns the current alpha value applied to rendering operations.</p> + + <p>Can be set, to change the alpha value. Values outside of the + range 0.0 .. 1.0 are ignored.</p> + + </dd> + + + <dt><var title="">context</var> . <code title="dom-context-2d-globalCompositeOperation"><a href="#dom-context-2d-globalcompositeoperation">globalCompositeOperation</a></code> [ = <var title="">value</var> ]</dt> + + <dd> + + <p>Returns the current composition operation, from the list below.</p> + + <p>Can be set, to change the composition operation. Unknown values + are ignored.</p> + + </dd> + + </dl><div class="impl"> + + <p>All drawing operations are affected by the global compositing + attributes, <code title="dom-context-2d-globalAlpha"><a href="#dom-context-2d-globalalpha">globalAlpha</a></code> and <code title="dom-context-2d-globalCompositeOperation"><a href="#dom-context-2d-globalcompositeoperation">globalCompositeOperation</a></code>.</p> + + <!-- conformance criteria for painting are described in the "drawing + model" section below --> + + <p>The <dfn id="dom-context-2d-globalalpha" title="dom-context-2d-globalAlpha"><code>globalAlpha</code></dfn> + attribute gives an alpha value that is applied to shapes and images + before they are composited onto the canvas. The value must be in the + range from 0.0 (fully transparent) to 1.0 (no additional + transparency). If an attempt is made to set the attribute to a value + outside this range, including Infinity and Not-a-Number (NaN) + values, the attribute must retain its previous value. When the + context is created, the <code title="dom-context-2d-globalAlpha"><a href="#dom-context-2d-globalalpha">globalAlpha</a></code> attribute must + initially have the value 1.0.</p> + + <p>The <dfn id="dom-context-2d-globalcompositeoperation" title="dom-context-2d-globalCompositeOperation"><code>globalCompositeOperation</code></dfn> + attribute sets how shapes and images are drawn onto the existing + bitmap, once they have had <code title="dom-context-2d-globalAlpha"><a href="#dom-context-2d-globalalpha">globalAlpha</a></code> and the + current transformation matrix applied. It must be set to a value + from the following list. In the descriptions below, the source + image, <var title="">A</var>, is the shape or image being rendered, + and the destination image, <var title="">B</var>, is the current + state of the bitmap.</p> + + </div> + + <dl><dt><dfn id="gcop-source-atop" title="gcop-source-atop"><code>source-atop</code></dfn></dt> + + <dd><var title="">A</var> atop <var title="">B</var>. <span class="note">Display the + source image wherever both images are opaque. Display the + destination image wherever the destination image is opaque but the + source image is transparent. Display transparency elsewhere.</span></dd> + + <dt><dfn id="gcop-source-in" title="gcop-source-in"><code>source-in</code></dfn></dt> + + <dd><var title="">A</var> in <var title="">B</var>. <span class="note">Display the + source image wherever both the source image and destination image + are opaque. Display transparency elsewhere.</span></dd> + + <dt><dfn id="gcop-source-out" title="gcop-source-out"><code>source-out</code></dfn></dt> + + <dd><var title="">A</var> out <var title="">B</var>. <span class="note">Display the + source image wherever the source image is opaque and the + destination image is transparent. Display transparency + elsewhere.</span></dd> + + <dt><dfn id="gcop-source-over" title="gcop-source-over"><code>source-over</code></dfn> (default)</dt> + + <dd><var title="">A</var> over <var title="">B</var>. <span class="note">Display the + source image wherever the source image is opaque. Display the + destination image elsewhere.</span></dd> + + + <dt><dfn id="gcop-destination-atop" title="gcop-destination-atop"><code>destination-atop</code></dfn></dt> + + <dd><var title="">B</var> atop <var title="">A</var>. <span class="note">Same as <code title="gcop-source-atop"><a href="#gcop-source-atop">source-atop</a></code> but using the + destination image instead of the source image and vice versa.</span></dd> + + <dt><dfn id="gcop-destination-in" title="gcop-destination-in"><code>destination-in</code></dfn></dt> + + <dd><var title="">B</var> in <var title="">A</var>. <span class="note">Same as <code title="gcop-source-in"><a href="#gcop-source-in">source-in</a></code> but using the destination + image instead of the source image and vice versa.</span></dd> + + <dt><dfn id="gcop-destination-out" title="gcop-destination-out"><code>destination-out</code></dfn></dt> + + <dd><var title="">B</var> out <var title="">A</var>. <span class="note">Same as <code title="gcop-source-out"><a href="#gcop-source-out">source-out</a></code> but using the destination + image instead of the source image and vice versa.</span></dd> + + <dt><dfn id="gcop-destination-over" title="gcop-destination-over"><code>destination-over</code></dfn></dt> + + <dd><var title="">B</var> over <var title="">A</var>. <span class="note">Same as <code title="gcop-source-over"><a href="#gcop-source-over">source-over</a></code> but using the + destination image instead of the source image and vice versa.</span></dd> + + +<!-- no clear definition of this operator (doesn't correspond to a PorterDuff operator) + <dt><dfn title="gcop-darker"><code>darker</code></dfn></dt> + + <dd><span class="note">Display the sum of the source image and destination image, + with color values approaching 0 as a limit.</span></dd> +--> + + <dt><dfn id="gcop-lighter" title="gcop-lighter"><code>lighter</code></dfn></dt> + + <dd><var title="">A</var> plus <var title="">B</var>. <span class="note">Display the + sum of the source image and destination image, with color values + approaching 255 (100%) as a limit.</span></dd> + + + <dt><dfn id="gcop-copy" title="gcop-copy"><code>copy</code></dfn></dt> + + <dd><var title="">A</var> (<var title="">B</var> is + ignored). <span class="note">Display the source image instead of the destination + image.</span></dd> + + + <dt><dfn id="gcop-xor" title="gcop-xor"><code>xor</code></dfn></dt> + + <dd><var title="">A</var> xor <var title="">B</var>. <span class="note">Exclusive OR + of the source image and destination image.</span></dd> + + + <dt class="impl"><code><var title="">vendorName</var>-<var title="">operationName</var></code></dt> + + <dd class="impl">Vendor-specific extensions to the list of + composition operators should use this syntax.</dd> + + </dl><div class="impl"> + + <p>The operators in the above list must be treated as described by + the Porter-Duff operator given at the start of their description + (e.g. <var title="">A</var> over <var title="">B</var>). They are to + be applied as part of the <a href="#drawing-model">drawing model</a>, at which point the + <a href="#clipping-region">clipping region</a> is also applied. (Without a clipping + region, these operators act on the whole bitmap with every + operation.) <a href="#refsPORTERDUFF">[PORTERDUFF]</a></p> + + <p>These values are all case-sensitive — they must be used + exactly as shown. User agents must not recognize values that are not + a <a href="#case-sensitive">case-sensitive</a> match for one of the values given + above.</p> + + <p>On setting, if the user agent does not recognize the specified + value, it must be ignored, leaving the value of <code title="dom-context-2d-globalCompositeOperation"><a href="#dom-context-2d-globalcompositeoperation">globalCompositeOperation</a></code> + unaffected.</p> + + <p>When the context is created, the <code title="dom-context-2d-globalCompositeOperation"><a href="#dom-context-2d-globalcompositeoperation">globalCompositeOperation</a></code> + attribute must initially have the value + <code>source-over</code>.</p> + + </div> + + + <h6 id="colors-and-styles"><span class="secno">4.8.11.1.4 </span>Colors and styles</h6> + + <dl class="domintro"><dt><var title="">context</var> . <code title="dom-context-2d-strokeStyle"><a href="#dom-context-2d-strokestyle">strokeStyle</a></code> [ = <var title="">value</var> ]</dt> + + <dd> + + <p>Returns the current style used for stroking shapes.</p> + + <p>Can be set, to change the stroke style.</p> + + <p>The style can be either a string containing a CSS color, or a + <code><a href="#canvasgradient">CanvasGradient</a></code> or <code><a href="#canvaspattern">CanvasPattern</a></code> + object. Invalid values are ignored.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-fillStyle"><a href="#dom-context-2d-fillstyle">fillStyle</a></code> [ = <var title="">value</var> ]</dt> + + <dd> + + <p>Returns the current style used for filling shapes.</p> + + <p>Can be set, to change the fill style.</p> + + <p>The style can be either a string containing a CSS color, or a + <code><a href="#canvasgradient">CanvasGradient</a></code> or <code><a href="#canvaspattern">CanvasPattern</a></code> + object. Invalid values are ignored.</p> + + </dd> + + </dl><div class="impl"> + + <!-- v6 feature requests: + + * Getting and setting colours by component to bypass the CSS value parsing. + + Either: + context.fillStyle.red += 1; + + Or: + var array = context.fillStyle; + array[1] += 1; + context.fillStyle = array; + + * A more performant way of setting colours in general, e.g.: + + context.setFillColor(r,g,b,a) // already supported by webkit + + Or: + + context.fillStyle = 0xRRGGBBAA; // set a 32bit int directly + + * fill rule for deciding between winding and even-odd algorithms. + SVG has fill-rule: nonzero | evenodd + http://www.w3.org/TR/SVG/painting.html#FillProperties + + --> + + <p>The <dfn id="dom-context-2d-strokestyle" title="dom-context-2d-strokeStyle"><code>strokeStyle</code></dfn> + attribute represents the color or style to use for the lines around + shapes, and the <dfn id="dom-context-2d-fillstyle" title="dom-context-2d-fillStyle"><code>fillStyle</code></dfn> + attribute represents the color or style to use inside the + shapes.</p> + + <p>Both attributes can be either strings, + <code><a href="#canvasgradient">CanvasGradient</a></code>s, or <code><a href="#canvaspattern">CanvasPattern</a></code>s. On + setting, strings must be <a href="#parsed-as-a-css-color-value" title="parsed as a CSS <color> + value">parsed as CSS <color> values</a> and the color + assigned, and <code><a href="#canvasgradient">CanvasGradient</a></code> and + <code><a href="#canvaspattern">CanvasPattern</a></code> objects must be assigned themselves. <a href="#refsCSSCOLOR">[CSSCOLOR]</a> If the value is a string but + cannot be <a href="#parsed-as-a-css-color-value">parsed as a CSS <color> value</a>, or is + neither a string, a <code><a href="#canvasgradient">CanvasGradient</a></code>, nor a + <code><a href="#canvaspattern">CanvasPattern</a></code>, then it must be ignored, and the + attribute must retain its previous value.</p> + + <p>When set to a <code><a href="#canvaspattern">CanvasPattern</a></code> or + <code><a href="#canvasgradient">CanvasGradient</a></code> object, the assignment is + <a href="#live">live</a>, meaning that changes made to the object after the + assignment do affect subsequent stroking or filling of shapes.</p> + + <p>On getting, if the value is a color, then the <a href="#serialization-of-a-color" title="serialization of a color">serialization of the color</a> + must be returned. Otherwise, if it is not a color but a + <code><a href="#canvasgradient">CanvasGradient</a></code> or <code><a href="#canvaspattern">CanvasPattern</a></code>, then the + respective object must be returned. (Such objects are opaque and + therefore only useful for assigning to other attributes or for + comparison to other gradients or patterns.)</p> + + <p>The <dfn id="serialization-of-a-color">serialization of a color</dfn> for a color value is a + string, computed as follows: if it has alpha equal to 1.0, then the + string is a lowercase six-digit hex value, prefixed with a "#" + character (U+0023 NUMBER SIGN), with the first two digits + representing the red component, the next two digits representing the + green component, and the last two digits representing the blue + component, the digits being in the range 0-9 a-f (U+0030 to U+0039 + and U+0061 to U+0066). Otherwise, the color value has alpha less + than 1.0, and the string is the color value in the CSS <code title="">rgba()</code> functional-notation format: the literal + string <code title="">rgba</code> (U+0072 U+0067 U+0062 U+0061) + followed by a U+0028 LEFT PARENTHESIS, a base-ten integer in the + range 0-255 representing the red component (using digits 0-9, U+0030 + to U+0039, in the shortest form possible), a literal U+002C COMMA + and U+0020 SPACE, an integer for the green component, a comma and a + space, an integer for the blue component, another comma and space, a + U+0030 DIGIT ZERO, if the alpha value is greater than zero then a + U+002E FULL STOP (representing the decimal point), if the alpha + value is greater than zero then one or more digits in the range 0-9 + (U+0030 to U+0039) representing the fractional part of the alpha + value, and finally a U+0029 RIGHT PARENTHESIS.</p> <!-- if people + complain this is unreadable, expand it into a <dl> with two nested + <ol>s --> + + <p>When the context is created, the <code title="dom-context-2d-strokeStyle"><a href="#dom-context-2d-strokestyle">strokeStyle</a></code> and <code title="dom-context-2d-fillStyle"><a href="#dom-context-2d-fillstyle">fillStyle</a></code> attributes must + initially have the string value <code title="">#000000</code>.</p> + + </div> + + <hr/><p>There are two types of gradients, linear gradients and radial + gradients, both represented by objects implementing the opaque + <code><a href="#canvasgradient">CanvasGradient</a></code> interface.</p> + + <p id="interpolation">Once a gradient has been created (see below), + stops are placed along it to define how the colors are distributed + along the gradient. <span class="impl">The color of the gradient at + each stop is the color specified for that stop. Between each such + stop, the colors and the alpha component must be linearly + interpolated over the RGBA space without premultiplying the alpha + value to find the color to use at that offset. Before the first + stop, the color must be the color of the first stop. After the last + stop, the color must be the color of the last stop. When there are + no stops, the gradient is transparent black.</span></p> + + <dl class="domintro"><dt><var title="">gradient</var> . <code title="dom-canvasgradient-addColorStop"><a href="#dom-canvasgradient-addcolorstop">addColorStop</a></code>(<var title="">offset</var>, <var title="">color</var>)</dt> + + <dd> + + <p>Adds a color stop with the given color to the gradient at the + given offset. 0.0 is the offset at one end of the gradient, 1.0 is + the offset at the other end.</p> + + <p>Throws an <code><a href="#index_size_err">INDEX_SIZE_ERR</a></code> exception if the offset + is out of range. Throws a <code><a href="#syntax_err">SYNTAX_ERR</a></code> exception if the + color cannot be parsed.</p> + + </dd> + + <dt><var title="">gradient</var> = <var title="">context</var> . <code title="dom-context-2d-createLinearGradient"><a href="#dom-context-2d-createlineargradient">createLinearGradient</a></code>(<var title="">x0</var>, <var title="">y0</var>, <var title="">x1</var>, <var title="">y1</var>)</dt> + + <dd> + + <p>Returns a <code><a href="#canvasgradient">CanvasGradient</a></code> object that represents a + linear gradient that paints along the line given by the + coordinates represented by the arguments.</p> + + <p>If any of the arguments are not finite numbers, throws a + <code><a href="#not_supported_err">NOT_SUPPORTED_ERR</a></code> exception.</p> + + </dd> + + <dt><var title="">gradient</var> = <var title="">context</var> . <code title="dom-context-2d-createRadialGradient"><a href="#dom-context-2d-createradialgradient">createRadialGradient</a></code>(<var title="">x0</var>, <var title="">y0</var>, <var title="">r0</var>, <var title="">x1</var>, <var title="">y1</var>, <var title="">r1</var>)</dt> + + <dd> + + <p>Returns a <code><a href="#canvasgradient">CanvasGradient</a></code> object that represents a + radial gradient that paints along the cone given by the circles + represented by the arguments.</p> + + <p>If any of the arguments are not finite numbers, throws a + <code><a href="#not_supported_err">NOT_SUPPORTED_ERR</a></code> exception. If either of the radii + are negative, throws an <code><a href="#index_size_err">INDEX_SIZE_ERR</a></code> exception.</p> + + </dd> + + </dl><div class="impl"> + + <p>The <dfn id="dom-canvasgradient-addcolorstop" title="dom-canvasgradient-addColorStop"><code>addColorStop(<var title="">offset</var>, <var title="">color</var>)</code></dfn> + method on the <code><a href="#canvasgradient">CanvasGradient</a></code> interface adds a new stop + to a gradient. If the <var title="">offset</var> is less than 0, + greater than 1, infinite, or NaN, then an + <code><a href="#index_size_err">INDEX_SIZE_ERR</a></code> exception must be raised. If the <var title="">color</var> cannot be <a href="#parsed-as-a-css-color-value">parsed as a CSS <color> + value</a>, then a <code><a href="#syntax_err">SYNTAX_ERR</a></code> exception must be + raised. Otherwise, the gradient must have a new stop placed, at + offset <var title="">offset</var> relative to the whole gradient, + and with the color obtained by parsing <var title="">color</var> as + a CSS <color> value. If multiple stops are added at the same + offset on a gradient, they must be placed in the order added, with + the first one closest to the start of the gradient, and each + subsequent one infinitesimally further along towards the end point + (in effect causing all but the first and last stop added at each + point to be ignored).</p> + + <p>The <dfn id="dom-context-2d-createlineargradient" title="dom-context-2d-createLinearGradient"><code>createLinearGradient(<var title="">x0</var>, <var title="">y0</var>, <var title="">x1</var>, + <var title="">y1</var>)</code></dfn> method takes four arguments + that represent the start point (<var title="">x0</var>, <var title="">y0</var>) and end point (<var title="">x1</var>, <var title="">y1</var>) of the gradient. If any of the arguments to <code title="dom-context-2d-createLinearGradient"><a href="#dom-context-2d-createlineargradient">createLinearGradient()</a></code> + are infinite or NaN, the method must raise a + <code><a href="#not_supported_err">NOT_SUPPORTED_ERR</a></code> exception. Otherwise, the method must + return a linear <code><a href="#canvasgradient">CanvasGradient</a></code> initialized with the + specified line.</p> + + <p>Linear gradients must be rendered such that all points on a line + perpendicular to the line that crosses the start and end points have + the color at the point where those two lines cross (with the colors + coming from the <a href="#interpolation">interpolation and + extrapolation</a> described above). The points in the linear + gradient must be transformed as described by the <a href="#transformations" title="dom-context-2d-transformation">current transformation + matrix</a> when rendering.</p> + + <p>If <span title=""><var title="">x0</var> = <var title="">x1</var></span> and <span title=""><var title="">y0</var> = <var title="">y1</var></span>, then + the linear gradient must paint nothing.</p> + + <p>The <dfn id="dom-context-2d-createradialgradient" title="dom-context-2d-createRadialGradient"><code>createRadialGradient(<var title="">x0</var>, <var title="">y0</var>, <var title="">r0</var>, + <var title="">x1</var>, <var title="">y1</var>, <var title="">r1</var>)</code></dfn> method takes six arguments, the + first three representing the start circle with origin (<var title="">x0</var>, <var title="">y0</var>) and radius <var title="">r0</var>, and the last three representing the end circle + with origin (<var title="">x1</var>, <var title="">y1</var>) and + radius <var title="">r1</var>. The values are in coordinate space + units. If any of the arguments are infinite or NaN, a + <code><a href="#not_supported_err">NOT_SUPPORTED_ERR</a></code> exception must be raised. If either + of <var title="">r0</var> or <var title="">r1</var> are negative, an + <code><a href="#index_size_err">INDEX_SIZE_ERR</a></code> exception must be raised. Otherwise, + the method must return a radial <code><a href="#canvasgradient">CanvasGradient</a></code> + initialized with the two specified circles.</p> + + <p>Radial gradients must be rendered by following these steps:</p> + + <ol><li><p>If <span title=""><var title="">x<sub>0</sub></var> = <var title="">x<sub>1</sub></var></span> and <span title=""><var title="">y<sub>0</sub></var> = <var title="">y<sub>1</sub></var></span> and <span title=""><var title="">r<sub>0</sub></var> = <var title="">r<sub>1</sub></var></span>, then the radial gradient must + paint nothing. Abort these steps.</p></li> + + <li> + + <p>Let <span title="">x(<var title="">ω</var>) = (<var title="">x<sub>1</sub></var>-<var title="">x<sub>0</sub></var>)<var title="">ω</var> + <var title="">x<sub>0</sub></var></span></p> + + <p>Let <span title="">y(<var title="">ω</var>) = (<var title="">y<sub>1</sub></var>-<var title="">y<sub>0</sub></var>)<var title="">ω</var> + <var title="">y<sub>0</sub></var></span></p> + + <p>Let <span title="">r(<var title="">ω</var>) = (<var title="">r<sub>1</sub></var>-<var title="">r<sub>0</sub></var>)<var title="">ω</var> + <var title="">r<sub>0</sub></var></span></p> + + <p>Let the color at <var title="">ω</var> be the color at + that position on the gradient (with the colors coming from the <a href="#interpolation">interpolation and extrapolation</a> + described above).</p> + + </li> + + <li><p>For all values of <var title="">ω</var> where <span title="">r(<var title="">ω</var>) > 0</span>, + starting with the value of <var title="">ω</var> nearest to + positive infinity and ending with the value of <var title="">ω</var> nearest to negative infinity, draw the + circumference of the circle with radius <span title="">r(<var title="">ω</var>)</span> at position (<span title="">x(<var title="">ω</var>)</span>, <span title="">y(<var title="">ω</var>)</span>), with the color at <var title="">ω</var>, but only painting on the parts of the + canvas that have not yet been painted on by earlier circles in this + step for this rendering of the gradient.</p></li> + + </ol><p class="note">This effectively creates a cone, touched by the two + circles defined in the creation of the gradient, with the part of + the cone before the start circle (0.0) using the color of the first + offset, the part of the cone after the end circle (1.0) using the + color of the last offset, and areas outside the cone untouched by + the gradient (transparent black).</p> + + <p>The points in the radial gradient must be transformed as + described by the <a href="#transformations" title="dom-context-2d-transformation">current + transformation matrix</a> when rendering.</p> + + <p>Gradients must be painted only where the relevant stroking or + filling effects requires that they be drawn.</p> + +<!-- + <p>Support for actually painting gradients is optional. Instead of + painting the gradients, user agents may instead just paint the first + stop's color. However, <code + title="dom-context-2d-createLinearGradient">createLinearGradient()</code> + and <code + title="dom-context-2d-createRadialGradient">createRadialGradient()</code> + must always return objects when passed valid arguments.</p> +--> + + </div> + + <hr/><p>Patterns are represented by objects implementing the opaque + <code><a href="#canvaspattern">CanvasPattern</a></code> interface.</p> + + <dl class="domintro"><dt><var title="">pattern</var> = <var title="">context</var> . <code title="dom-context-2d-createPattern"><a href="#dom-context-2d-createpattern">createPattern</a></code>(<var title="">image</var>, <var title="">repetition</var>)</dt> + + <dd> + + <p>Returns a <code><a href="#canvaspattern">CanvasPattern</a></code> object that uses the given image + and repeats in the direction(s) given by the <var title="">repetition</var> argument.</p> + + <p>The allowed values for <var title="">repetition</var> are <code title="">repeat</code> (both directions), <code title="">repeat-x</code> (horizontal only), <code title="">repeat-y</code> (vertical only), and <code title="">no-repeat</code> (neither). If the <var title="">repetition</var> argument is empty, the value <code title="">repeat</code> is used.</p> + + <p>If the image has no image data, throws an + <code><a href="#invalid_state_err">INVALID_STATE_ERR</a></code> exception. If the second argument + isn't one of the allowed values, throws a <code><a href="#syntax_err">SYNTAX_ERR</a></code> + exception. If the image isn't yet fully decoded, then the method + returns null.</p> + + </dd> + + </dl><div class="impl"> + + <p>To create objects of this type, the <dfn id="dom-context-2d-createpattern" title="dom-context-2d-createPattern"><code>createPattern(<var title="">image</var>, <var title="">repetition</var>)</code></dfn> + method is used. The first argument gives the image to use as the + pattern (either an <code><a href="#htmlimageelement">HTMLImageElement</a></code>, + <code><a href="#htmlcanvaselement">HTMLCanvasElement</a></code>, or <code><a href="#htmlvideoelement">HTMLVideoElement</a></code> + object). Modifying this image after calling the <code title="dom-context-2d-createPattern"><a href="#dom-context-2d-createpattern">createPattern()</a></code> method + must not affect the pattern. The second argument must be a string + with one of the following values: <code title="">repeat</code>, + <code title="">repeat-x</code>, <code title="">repeat-y</code>, + <code title="">no-repeat</code>. If the empty string is specified, + <code title="">repeat</code> must be assumed. If an unrecognized value + is given, then the user agent must raise a <code><a href="#syntax_err">SYNTAX_ERR</a></code> + exception. User agents must recognize the four values described above + exactly (e.g. they must not do case folding). Except as specified + below, the method must return a <code><a href="#canvaspattern">CanvasPattern</a></code> object + suitably initialized.</p> + + <p>The <var title="">image</var> argument is an instance of either + <code><a href="#htmlimageelement">HTMLImageElement</a></code>, <code><a href="#htmlcanvaselement">HTMLCanvasElement</a></code>, or + <code><a href="#htmlvideoelement">HTMLVideoElement</a></code>.</p> <!-- drawImage() has an equivalent + paragraph --> + + <p>If the <var title="">image</var> argument is an + <code><a href="#htmlimageelement">HTMLImageElement</a></code> object that is not <a href="#img-good" title="img-good">fully decodable</a>, or if the <var title="">image</var> argument is an <code><a href="#htmlvideoelement">HTMLVideoElement</a></code> + object whose <code title="dom-media-readyState"><a href="#dom-media-readystate">readyState</a></code> + attribute is either <code title="dom-media-HAVE_NOTHING"><a href="#dom-media-have_nothing">HAVE_NOTHING</a></code> or <code title="dom-media-HAVE_METADATA"><a href="#dom-media-have_metadata">HAVE_METADATA</a></code>, then the + implementation must return null.</p> <!-- drawImage() has an + equivalent paragraph --> + + <p>If the <var title="">image</var> argument is an + <code><a href="#htmlcanvaselement">HTMLCanvasElement</a></code> object with either a horizontal + dimension or a vertical dimension equal to zero, then the + implementation must raise an <code><a href="#invalid_state_err">INVALID_STATE_ERR</a></code> + exception.</p> + <!-- drawImage() has an equivalent paragraph --> + + <p>Patterns must be painted so that the top left of the first image + is anchored at the origin of the coordinate space, and images are + then repeated horizontally to the left and right (if the + <code>repeat-x</code> string was specified) or vertically up and + down (if the <code>repeat-y</code> string was specified) or in all + four directions all over the canvas (if the <code>repeat</code> + string was specified). The images are not scaled by this process; + one CSS pixel of the image must be painted on one coordinate space + unit. Of course, patterns must actually be painted only where the + stroking or filling effect requires that they be drawn, and are + affected by the current transformation matrix.</p> + + <p>If the original image data is a bitmap image, the value painted + at a point in the area of the repetitions is computed by filtering + the original image data. The user agent may use any filtering + algorithm (for example bilinear interpolation or nearest-neighbor). + When the filtering algorithm requires a pixel value from outside the + original image data, it must instead use the value from wrapping the + pixel's coordinates to the original image's dimensions. (That is, + the filter uses 'repeat' behavior, regardless of the value of + <var title="">repetition</var>.) + <!-- drawImage() has a similar paragraph with different rules --> + + </p><p>When the <code title="dom-context-2d-createPattern"><a href="#dom-context-2d-createpattern">createPattern()</a></code> method + is passed an animated image as its <var title="">image</var> + argument, the user agent must use the poster frame of the animation, + or, if there is no poster frame, the first frame of the + animation.</p> + <!-- drawImage() has an equivalent paragraph --> + + <p>When the <var title="">image</var> argument is an + <code><a href="#htmlvideoelement">HTMLVideoElement</a></code>, then the frame at the <a href="#current-playback-position">current + playback position</a> must be used as the source image, and the + source image's dimensions must be the <a href="#concept-video-intrinsic-width" title="concept-video-intrinsic-width">intrinsic width</a> and + <a href="#concept-video-intrinsic-height" title="concept-video-intrinsic-height">intrinsic height</a> + of the <a href="#media-resource">media resource</a> (i.e. after any aspect-ratio + correction has been applied).</p> + <!-- drawImage() has an equivalent paragraph --> + + <!-- + Requests for v6 features: + * apply transforms to patterns, so you don't have to create + transformed patterns manually by rendering them to an off-screen + canvas then using that canvas as the pattern. + --> + + </div> + + + + <h6 id="line-styles"><span class="secno">4.8.11.1.5 </span>Line styles</h6> + + <dl class="domintro"><dt><var title="">context</var> . <code title="dom-context-2d-lineWidth"><a href="#dom-context-2d-linewidth">lineWidth</a></code> [ = <var title="">value</var> ]</dt> + + <dd> + + <p>Returns the current line width.</p> + + <p>Can be set, to change the line width. Values that are not + finite values greater than zero are ignored.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-lineCap"><a href="#dom-context-2d-linecap">lineCap</a></code> [ = <var title="">value</var> ]</dt> + + <dd> + + <p>Returns the current line cap style.</p> + + <p>Can be set, to change the line cap style.</p> + + <p>The possible line cap styles are <code>butt</code>, + <code>round</code>, and <code>square</code>. Other values are + ignored.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-lineJoin"><a href="#dom-context-2d-linejoin">lineJoin</a></code> [ = <var title="">value</var> ]</dt> + + <dd> + + <p>Returns the current line join style.</p> + + <p>Can be set, to change the line join style.</p> + + <p>The possible line join styles are <code>bevel</code>, + <code>round</code>, and <code>miter</code>. Other values are + ignored.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-miterLimit"><a href="#dom-context-2d-miterlimit">miterLimit</a></code> [ = <var title="">value</var> ]</dt> + + <dd> + + <p>Returns the current miter limit ratio.</p> + + <p>Can be set, to change the miter limit ratio. Values that are + not finite values greater than zero are ignored.</p> + + </dd> + + </dl><div class="impl"> + + <p>The <dfn id="dom-context-2d-linewidth" title="dom-context-2d-lineWidth"><code>lineWidth</code></dfn> + attribute gives the width of lines, in coordinate space units. On + getting, it must return the current value. On setting, zero, + negative, infinite, and NaN values must be ignored, leaving the + value unchanged; other values must change the current value to the + new value.</p> + + <p>When the context is created, the <code title="dom-context-2d-lineWidth"><a href="#dom-context-2d-linewidth">lineWidth</a></code> attribute must + initially have the value <code>1.0</code>.</p> + + <hr/><p>The <dfn id="dom-context-2d-linecap" title="dom-context-2d-lineCap"><code>lineCap</code></dfn> attribute + defines the type of endings that UAs will place on the end of + lines. The three valid values are <code>butt</code>, + <code>round</code>, and <code>square</code>. The <code>butt</code> + value means that the end of each line has a flat edge perpendicular + to the direction of the line (and that no additional line cap is + added). The <code>round</code> value means that a semi-circle with + the diameter equal to the width of the line must then be added on to + the end of the line. The <code>square</code> value means that a + rectangle with the length of the line width and the width of half + the line width, placed flat against the edge perpendicular to the + direction of the line, must be added at the end of each line.</p> + + <p>On getting, it must return the current value. On setting, if the + new value is one of the literal strings <code>butt</code>, + <code>round</code>, and <code>square</code>, then the current value + must be changed to the new value; other values must ignored, leaving + the value unchanged.</p> + + <p>When the context is created, the <code title="dom-context-2d-lineCap"><a href="#dom-context-2d-linecap">lineCap</a></code> attribute must + initially have the value <code>butt</code>.</p> + + <hr/><p>The <dfn id="dom-context-2d-linejoin" title="dom-context-2d-lineJoin"><code>lineJoin</code></dfn> + attribute defines the type of corners that UAs will place where two + lines meet. The three valid values are <code>bevel</code>, + <code>round</code>, and <code>miter</code>.</p> + + <p>On getting, it must return the current value. On setting, if the + new value is one of the literal strings <code>bevel</code>, + <code>round</code>, and <code>miter</code>, then the current value + must be changed to the new value; other values must be ignored, + leaving the value unchanged.</p> + + <p>When the context is created, the <code title="dom-context-2d-lineJoin"><a href="#dom-context-2d-linejoin">lineJoin</a></code> attribute must + initially have the value <code>miter</code>.</p> + + <hr/><p>A join exists at any point in a subpath shared by two consecutive + lines. When a subpath is closed, then a join also exists at its + first point (equivalent to its last point) connecting the first and + last lines in the subpath.</p> + + <p>In addition to the point where the join occurs, two additional + points are relevant to each join, one for each line: the two corners + found half the line width away from the join point, one + perpendicular to each line, each on the side furthest from the other + line.</p> + + <p>A filled triangle connecting these two opposite corners with a + straight line, with the third point of the triangle being the join + point, must be rendered at all joins. The <code title="dom-context-2d-lineJoin"><a href="#dom-context-2d-linejoin">lineJoin</a></code> attribute controls + whether anything else is rendered. The three aforementioned values + have the following meanings:</p> + + <p>The <code>bevel</code> value means that this is all that is + rendered at joins.</p> + + <p>The <code>round</code> value means that a filled arc connecting + the two aforementioned corners of the join, abutting (and not + overlapping) the aforementioned triangle, with the diameter equal to + the line width and the origin at the point of the join, must be + rendered at joins.</p> + + <p>The <code>miter</code> value means that a second filled triangle + must (if it can given the miter length) be rendered at the join, + with one line being the line between the two aforementioned corners, + abutting the first triangle, and the other two being continuations of + the outside edges of the two joining lines, as long as required to + intersect without going over the miter length.</p> + + <p>The miter length is the distance from the point where the join + occurs to the intersection of the line edges on the outside of the + join. The miter limit ratio is the maximum allowed ratio of the + miter length to half the line width. If the miter length would cause + the miter limit ratio to be exceeded, this second triangle must not + be rendered.</p> + + <p>The miter limit ratio can be explicitly set using the <dfn id="dom-context-2d-miterlimit" title="dom-context-2d-miterLimit"><code>miterLimit</code></dfn> + attribute. On getting, it must return the current value. On setting, + zero, negative, infinite, and NaN values must be ignored, leaving + the value unchanged; other values must change the current value to + the new value.</p> + + <p>When the context is created, the <code title="dom-context-2d-miterLimit"><a href="#dom-context-2d-miterlimit">miterLimit</a></code> attribute must + initially have the value <code>10.0</code>.</p> + + <!-- +v6: dashed lines have been requested. Philip Taylor provides these +notes on what would need to be defined for dashed lines: +> I don't think it's entirely trivial to add, to the detail that's +> necessary in a specification. The common graphics APIs (at least +> Cairo, Quartz and java.awt.Graphics, and any SVG implementation) all +> have dashes specified by passing an array of dash lengths (alternating +> on/off), so that should be alright as long as you define what units +> it's measured in and what happens when you specify an odd number of +> values and how errors are handled and what happens if you update the +> array later. But after that, what does it do when stroking multiple +> subpaths, in terms of offsetting the dashes? When you use strokeRect, +> where is offset 0? Does moveTo reset the offset? How does it interact +> with lineCap/lineJoin? All the potential issues need test cases too, +> and the implementations need to make sure they handle any edge cases +> that the underlying graphics library does differently. (SVG Tiny 1.2 +> appears to skip some of the problems by leaving things undefined and +> allowing whatever behavior the graphics library has.) + +Another request has been for hairline width lines, that remain +hairline width with transform. ack Shaun Morris. + --> + + </div> + + + <h6 id="shadows"><span class="secno">4.8.11.1.6 </span><dfn>Shadows</dfn></h6> + + <p>All drawing operations are affected by the four global shadow + attributes.</p> + + <dl class="domintro"><dt><var title="">context</var> . <code title="dom-context-2d-shadowColor"><a href="#dom-context-2d-shadowcolor">shadowColor</a></code> [ = <var title="">value</var> ]</dt> + + <dd> + + <p>Returns the current shadow color.</p> + + <p>Can be set, to change the shadow color. Values that cannot be parsed as CSS colors are ignored.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-shadowOffsetX"><a href="#dom-context-2d-shadowoffsetx">shadowOffsetX</a></code> [ = <var title="">value</var> ]</dt> + <dt><var title="">context</var> . <code title="dom-context-2d-shadowOffsetY"><a href="#dom-context-2d-shadowoffsety">shadowOffsetY</a></code> [ = <var title="">value</var> ]</dt> + + <dd> + + <p>Returns the current shadow offset.</p> + + <p>Can be set, to change the shadow offset. Values that are not finite numbers are ignored.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-shadowBlur"><a href="#dom-context-2d-shadowblur">shadowBlur</a></code> [ = <var title="">value</var> ]</dt> + + <dd> + + <p>Returns the current level of blur applied to shadows.</p> + + <p>Can be set, to change the blur level. Values that are not finite numbers greater than or equal to zero are ignored.</p> + + </dd> + + </dl><div class="impl"> + + <p>The <dfn id="dom-context-2d-shadowcolor" title="dom-context-2d-shadowColor"><code>shadowColor</code></dfn> + attribute sets the color of the shadow.</p> + + <p>When the context is created, the <code title="dom-context-2d-shadowColor"><a href="#dom-context-2d-shadowcolor">shadowColor</a></code> attribute + initially must be fully-transparent black.</p> + + <p>On getting, the <a href="#serialization-of-a-color" title="serialization of a + color">serialization of the color</a> must be returned.</p> + + <p>On setting, the new value must be <a href="#parsed-as-a-css-color-value">parsed as a CSS + <color> value</a> and the color assigned. If the value + cannot be parsed as a CSS <color> value then it must be + ignored, and the attribute must retain its previous value. <a href="#refsCSSCOLOR">[CSSCOLOR]</a></p> + + <p>The <dfn id="dom-context-2d-shadowoffsetx" title="dom-context-2d-shadowOffsetX"><code>shadowOffsetX</code></dfn> + and <dfn id="dom-context-2d-shadowoffsety" title="dom-context-2d-shadowOffsetY"><code>shadowOffsetY</code></dfn> + attributes specify the distance that the shadow will be offset in + the positive horizontal and positive vertical distance + respectively. Their values are in coordinate space units. They are + not affected by the current transformation matrix.</p> + + <p>When the context is created, the shadow offset attributes must + initially have the value <code>0</code>.</p> + + <p>On getting, they must return their current value. On setting, the + attribute being set must be set to the new value, except if the + value is infinite or NaN, in which case the new value must be + ignored.</p> + + <p>The <dfn id="dom-context-2d-shadowblur" title="dom-context-2d-shadowBlur"><code>shadowBlur</code></dfn> + attribute specifies the level of the blurring effect. (The units do + not map to coordinate space units, and are not affected by the + current transformation matrix.)</p> + + <p>When the context is created, the <code title="dom-context-2d-shadowBlur"><a href="#dom-context-2d-shadowblur">shadowBlur</a></code> attribute must + initially have the value <code>0</code>.</p> + + <p>On getting, the attribute must return its current value. On + setting the attribute must be set to the new value, except if the + value is negative, infinite or NaN, in which case the new value must + be ignored.</p> + + <p><dfn id="when-shadows-are-drawn" title="when shadows are drawn">Shadows are only drawn + if</dfn> the opacity component of the alpha component of the color + of <code title="dom-context-2d-shadowColor"><a href="#dom-context-2d-shadowcolor">shadowColor</a></code> is + non-zero and either the <code title="dom-context-2d-shadowBlur"><a href="#dom-context-2d-shadowblur">shadowBlur</a></code> is non-zero, or + the <code title="dom-context-2d-shadowOffsetX"><a href="#dom-context-2d-shadowoffsetx">shadowOffsetX</a></code> + is non-zero, or the <code title="dom-context-2d-shadowOffsetY"><a href="#dom-context-2d-shadowoffsety">shadowOffsetY</a></code> is + non-zero.</p> + + <p class="critical">It is likely that this will change: browser + vendors have indicated an interest in changing the processing model + for shadows such that they only draw when the composition operator + is "source-over" (the default). <a href="http://lists.whatwg.org/htdig.cgi/whatwg-whatwg.org/2011-May/thread.html#31457">Read + more...</a></p> + + <p><a href="#when-shadows-are-drawn">When shadows are drawn</a>, they must be rendered as follows:</p> + + <ol><li> <p>Let <var title="">A</var> be an infinite transparent black + bitmap on which the source image for which a shadow is being + created has been rendered.</p> </li> + + <li> <p>Let <var title="">B</var> be an infinite transparent black + bitmap, with a coordinate space and an origin identical to <var title="">A</var>.</p> </li> + + <li> <p>Copy the alpha channel of <var title="">A</var> to <var title="">B</var>, offset by <code title="dom-context-2d-shadowOffsetX"><a href="#dom-context-2d-shadowoffsetx">shadowOffsetX</a></code> in the + positive <var title="">x</var> direction, and <code title="dom-context-2d-shadowOffsetY"><a href="#dom-context-2d-shadowoffsety">shadowOffsetY</a></code> in the + positive <var title="">y</var> direction.</p> </li> + + <li> <p>If <code title="dom-context-2d-shadowBlur"><a href="#dom-context-2d-shadowblur">shadowBlur</a></code> is greater than + 0:</p> + + <ol><li> <p>Let <var title="">σ</var> be half the value of + <code title="dom-context-2d-shadowBlur"><a href="#dom-context-2d-shadowblur">shadowBlur</a></code>.</p></li> + + <li> <p>Perform a 2D Gaussian Blur on <var title="">B</var>, + using <var title="">σ</var> as the standard deviation.</p> + <!-- wish i could find a reference for this --> </li> + + </ol><p>User agents may limit values of <var title="">σ</var> to + an implementation-specific maximum value to avoid exceeding + hardware limitations during the Gaussian blur operation.</p> + + </li> + + <li> <p>Set the red, green, and blue components of every pixel in + <var title="">B</var> to the red, green, and blue components + (respectively) of the color of <code title="dom-context-2d-shadowColor"><a href="#dom-context-2d-shadowcolor">shadowColor</a></code>.</p> </li> + + <li> <p>Multiply the alpha component of every pixel in <var title="">B</var> by the alpha component of the color of <code title="dom-context-2d-shadowColor"><a href="#dom-context-2d-shadowcolor">shadowColor</a></code>.</p> </li> + + <li> <p>The shadow is in the bitmap <var title="">B</var>, and is + rendered as part of the <a href="#drawing-model">drawing model</a> described below.</p> </li> + + </ol></div> + + <p>If the current composition operation is <code title="gcop-copy"><a href="#gcop-copy">copy</a></code>, shadows effectively won't render + (since the shape will overwrite the shadow).</p> + + + <h6 id="simple-shapes-(rectangles)"><span class="secno">4.8.11.1.7 </span>Simple shapes (rectangles)</h6> + + <p>There are three methods that immediately draw rectangles to the + bitmap. They each take four arguments; the first two give the <var title="">x</var> and <var title="">y</var> coordinates of the top + left of the rectangle, and the second two give the width <var title="">w</var> and height <var title="">h</var> of the rectangle, + respectively.</p> + + <div class="impl"> + + <p>The <a href="#transformations" title="dom-context-2d-transformation">current + transformation matrix</a> must be applied to the following four + coordinates, which form the path that must then be closed to get the + specified rectangle: <span title="">(<var title="">x</var>, <var title="">y</var>)</span>, <span title="">(<span title=""><var title="">x</var>+<var title="">w</var></span>, <var title="">y</var>)</span>, + <span title="">(<span title=""><var title="">x</var>+<var title="">w</var></span>, + <span title=""><var title="">y</var>+<var title="">h</var></span>)</span>, + <span title="">(<var title="">x</var>, <span title=""><var title="">y</var>+<var title="">h</var></span>)</span>.</p> + + <p>Shapes are painted without affecting the current path, and are + subject to the <a href="#clipping-region" title="clipping region">clipping region</a>, + and, with the exception of <code title="dom-context-2d-clearRect"><a href="#dom-context-2d-clearrect">clearRect()</a></code>, also <a href="#shadows" title="shadows">shadow effects</a>, <a href="#dom-context-2d-globalalpha" title="dom-context-2d-globalAlpha">global alpha</a>, and <a href="#dom-context-2d-globalcompositeoperation" title="dom-context-2d-globalCompositeOperation">global composition + operators</a>.</p> + + </div> + + <dl class="domintro"><dt><var title="">context</var> . <code title="dom-context-2d-clearRect"><a href="#dom-context-2d-clearrect">clearRect</a></code>(<var title="">x</var>, <var title="">y</var>, <var title="">w</var>, <var title="">h</var>)</dt> + + <dd> + + <p>Clears all pixels on the canvas in the given rectangle to transparent black.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-fillRect"><a href="#dom-context-2d-fillrect">fillRect</a></code>(<var title="">x</var>, <var title="">y</var>, <var title="">w</var>, <var title="">h</var>)</dt> + + <dd> + + <p>Paints the given rectangle onto the canvas, using the current fill style.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-strokeRect"><a href="#dom-context-2d-strokerect">strokeRect</a></code>(<var title="">x</var>, <var title="">y</var>, <var title="">w</var>, <var title="">h</var>)</dt> + + <dd> + + <p>Paints the box that outlines the given rectangle onto the canvas, using the current stroke style.</p> + + </dd> + + </dl><div class="impl"> + + <p>The <dfn id="dom-context-2d-clearrect" title="dom-context-2d-clearRect"><code>clearRect(<var title="">x</var>, <var title="">y</var>, <var title="">w</var>, <var title="">h</var>)</code></dfn> method must clear the pixels in the + specified rectangle that also intersect the current clipping region + to a fully transparent black, erasing any previous image. If either + height or width are zero, this method has no effect.</p> + + <p>The <dfn id="dom-context-2d-fillrect" title="dom-context-2d-fillRect"><code>fillRect(<var title="">x</var>, <var title="">y</var>, <var title="">w</var>, <var title="">h</var>)</code></dfn> method must paint the specified + rectangular area using the <code title="dom-context-2d-fillStyle"><a href="#dom-context-2d-fillstyle">fillStyle</a></code>. If either height + or width are zero, this method has no effect.</p> + + <p>The <dfn id="dom-context-2d-strokerect" title="dom-context-2d-strokeRect"><code>strokeRect(<var title="">x</var>, <var title="">y</var>, <var title="">w</var>, <var title="">h</var>)</code></dfn> method must stroke the specified + rectangle's path using the <code title="dom-context-2d-strokeStyle"><a href="#dom-context-2d-strokestyle">strokeStyle</a></code>, <code title="dom-context-2d-lineWidth"><a href="#dom-context-2d-linewidth">lineWidth</a></code>, <code title="dom-context-2d-lineJoin"><a href="#dom-context-2d-linejoin">lineJoin</a></code>, and (if + appropriate) <code title="dom-context-2d-miterLimit"><a href="#dom-context-2d-miterlimit">miterLimit</a></code> attributes. If + both height and width are zero, this method has no effect, since + there is no path to stroke (it's a point). If only one of the two is + zero, then the method will draw a line instead (the path for the + outline is just a straight line along the non-zero dimension).</p> + + </div> + + + <h6 id="complex-shapes-(paths)"><span class="secno">4.8.11.1.8 </span>Complex shapes (paths)</h6> + + <p>The context always has a current path. There is only one current + path, it is not part of the <a href="#drawing-state">drawing state</a>.</p> + + <p>A <dfn id="path">path</dfn> has a list of zero or more subpaths. Each + subpath consists of a list of one or more points, connected by + straight or curved lines, and a flag indicating whether the subpath + is closed or not. A closed subpath is one where the last point of + the subpath is connected to the first point of the subpath by a + straight line. Subpaths with fewer than two points are ignored when + painting the path.</p> + + <dl class="domintro"><dt><var title="">context</var> . <code title="dom-context-2d-beginPath"><a href="#dom-context-2d-beginpath">beginPath</a></code>()</dt> + + <dd> + + <p>Resets the current path.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-moveTo"><a href="#dom-context-2d-moveto">moveTo</a></code>(<var title="">x</var>, <var title="">y</var>)</dt> + + <dd> + + <p>Creates a new subpath with the given point.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-closePath"><a href="#dom-context-2d-closepath">closePath</a></code>()</dt> + + <dd> + + <p>Marks the current subpath as closed, and starts a new subpath with a point the same as the start and end of the newly closed subpath.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-lineTo"><a href="#dom-context-2d-lineto">lineTo</a></code>(<var title="">x</var>, <var title="">y</var>)</dt> + + <dd> + + <p>Adds the given point to the current subpath, connected to the previous one by a straight line.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-quadraticCurveTo"><a href="#dom-context-2d-quadraticcurveto">quadraticCurveTo</a></code>(<var title="">cpx</var>, <var title="">cpy</var>, <var title="">x</var>, <var title="">y</var>)</dt> + + <dd> + + <p>Adds the given point to the current subpath, connected to the previous one by a quadratic Bézier curve with the given control point.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-bezierCurveTo"><a href="#dom-context-2d-beziercurveto">bezierCurveTo</a></code>(<var title="">cp1x</var>, <var title="">cp1y</var>, <var title="">cp2x</var>, <var title="">cp2y</var>, <var title="">x</var>, <var title="">y</var>)</dt> + + <dd> + + <p>Adds the given point to the current subpath, connected to the previous one by a cubic Bézier curve with the given control points.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-arcTo"><a href="#dom-context-2d-arcto">arcTo</a></code>(<var title="">x1</var>, <var title="">y1</var>, <var title="">x2</var>, <var title="">y2</var>, <var title="">radius</var>)</dt> + + <dd> + + <p>Adds an arc with the given control points and radius to the + current subpath, connected to the previous point by a straight + line.</p> + + <p>Throws an <code><a href="#index_size_err">INDEX_SIZE_ERR</a></code> exception if the given + radius is negative.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-arc"><a href="#dom-context-2d-arc">arc</a></code>(<var title="">x</var>, <var title="">y</var>, <var title="">radius</var>, <var title="">startAngle</var>, <var title="">endAngle</var> [, <var title="">anticlockwise</var> ] )</dt> + + <dd> + + <p>Adds points to the subpath such that the arc described by the + circumference of the circle described by the arguments, starting + at the given start angle and ending at the given end angle, going + in the given direction (defaulting to clockwise), is added to the + path, connected to the previous point by a straight line.</p> + + <p>Throws an <code><a href="#index_size_err">INDEX_SIZE_ERR</a></code> exception if the given + radius is negative.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-rect"><a href="#dom-context-2d-rect">rect</a></code>(<var title="">x</var>, <var title="">y</var>, <var title="">w</var>, <var title="">h</var>)</dt> + + <dd> + + <p>Adds a new closed subpath to the path, representing the given rectangle.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-fill"><a href="#dom-context-2d-fill">fill</a></code>()</dt> + + <dd> + + <p>Fills the subpaths with the current fill style.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-stroke"><a href="#dom-context-2d-stroke">stroke</a></code>()</dt> + + <dd> + + <p>Strokes the subpaths with the current stroke style.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-drawSystemFocusRing"><a href="#dom-context-2d-drawsystemfocusring">drawSystemFocusRing</a></code>(<var title="">element</var>)</dt> + + <dd> + + <p>If the given element is focused, draws a focus ring around the + current path, following the platform conventions for focus + rings.</p> + + </dd> + + <dt><var title="">shouldDraw</var> = <var title="">context</var> . <code title="dom-context-2d-drawCustomFocusRing"><a href="#dom-context-2d-drawcustomfocusring">drawCustomFocusRing</a></code>(<var title="">element</var>)</dt> + + <dd> + + <p>If the given element is focused, and the user has configured + his system to draw focus rings in a particular manner (for + example, high contrast focus rings), draws a focus ring around the + current path and returns false.</p> + + <p>Otherwise, returns true if the given element is focused, and + false otherwise. This can thus be used to determine when to draw a + focus ring (see <a href="#drawCustomFocusRingExample">the + example</a> below).</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-scrollPathIntoView"><a href="#dom-context-2d-scrollpathintoview">scrollPathIntoView</a></code>()</dt> + + <dd> + + <p>Scrolls the current path into view. This is especially useful + on devices with small screens, where the whole canvas might not be + visible at once.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-clip"><a href="#dom-context-2d-clip">clip</a></code>()</dt> + + <dd> + + <p>Further constrains the clipping region to the given path.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-isPointInPath"><a href="#dom-context-2d-ispointinpath">isPointInPath</a></code>(<var title="">x</var>, <var title="">y</var>)</dt> + + <dd> + + <p>Returns true if the given point is in the current path.</p> + + </dd> + + </dl><div class="impl"> + + <p>Initially, the context's path must have zero subpaths.</p> + + <p>The points and lines added to the path by these methods must be + transformed according to the <a href="#transformations" title="dom-context-2d-transformation">current transformation + matrix</a> as they are added.</p> + + + <p>The <dfn id="dom-context-2d-beginpath" title="dom-context-2d-beginPath"><code>beginPath()</code></dfn> + method must empty the list of subpaths so that the context once + again has zero subpaths.</p> + + + <p>The <dfn id="dom-context-2d-moveto" title="dom-context-2d-moveTo"><code>moveTo(<var title="">x</var>, <var title="">y</var>)</code></dfn> method must + create a new subpath with the specified point as its first (and + only) point.</p> + + <p>When the user agent is to <dfn id="ensure-there-is-a-subpath">ensure there is a subpath</dfn> + for a coordinate (<var title="">x</var>, <var title="">y</var>), the + user agent must check to see if the context has any subpaths, and if + it does not, then the user agent must create a new subpath with the + point (<var title="">x</var>, <var title="">y</var>) as its first + (and only) point, as if the <code title="dom-context-2d-moveTo"><a href="#dom-context-2d-moveto">moveTo()</a></code> method had been + called.</p> + + + <p>The <dfn id="dom-context-2d-closepath" title="dom-context-2d-closePath"><code>closePath()</code></dfn> + method must do nothing if the context has no subpaths. Otherwise, it + must mark the last subpath as closed, create a new subpath whose + first point is the same as the previous subpath's first point, and + finally add this new subpath to the path.</p> + + <p class="note">If the last subpath had more than one point in its + list of points, then this is equivalent to adding a straight line + connecting the last point back to the first point, thus "closing" + the shape, and then repeating the last (possibly implied) <code title="dom-context-2d-moveTo"><a href="#dom-context-2d-moveto">moveTo()</a></code> call.</p> + + + <p>New points and the lines connecting them are added to subpaths + using the methods described below. In all cases, the methods only + modify the last subpath in the context's paths.</p> + + + <p>The <dfn id="dom-context-2d-lineto" title="dom-context-2d-lineTo"><code>lineTo(<var title="">x</var>, <var title="">y</var>)</code></dfn> method must + <a href="#ensure-there-is-a-subpath">ensure there is a subpath</a> for <span title="">(<var title="">x</var>, <var title="">y</var>)</span> if the context has + no subpaths. Otherwise, it must connect the last point in the + subpath to the given point (<var title="">x</var>, <var title="">y</var>) using a straight line, and must then add the given + point (<var title="">x</var>, <var title="">y</var>) to the + subpath.</p> + + + <p>The <dfn id="dom-context-2d-quadraticcurveto" title="dom-context-2d-quadraticCurveTo"><code>quadraticCurveTo(<var title="">cpx</var>, <var title="">cpy</var>, <var title="">x</var>, + <var title="">y</var>)</code></dfn> method must <a href="#ensure-there-is-a-subpath">ensure there + is a subpath</a> for <span title="">(<var title="">cpx</var>, + <var title="">cpy</var>)</span>, and then must connect the last + point in the subpath to the given point (<var title="">x</var>, <var title="">y</var>) using a quadratic Bézier curve with control + point (<var title="">cpx</var>, <var title="">cpy</var>), and must + then add the given point (<var title="">x</var>, <var title="">y</var>) to the subpath. <a href="#refsBEZIER">[BEZIER]</a></p> + + + <p>The <dfn id="dom-context-2d-beziercurveto" title="dom-context-2d-bezierCurveTo"><code>bezierCurveTo(<var title="">cp1x</var>, <var title="">cp1y</var>, <var title="">cp2x</var>, <var title="">cp2y</var>, <var title="">x</var>, <var title="">y</var>)</code></dfn> method must + <a href="#ensure-there-is-a-subpath">ensure there is a subpath</a> for <span title="">(<var title="">cp1x</var>, <var title="">cp1y</var>)</span>, and then must + connect the last point in the subpath to the given point (<var title="">x</var>, <var title="">y</var>) using a cubic Bézier + curve with control points (<var title="">cp1x</var>, <var title="">cp1y</var>) and (<var title="">cp2x</var>, <var title="">cp2y</var>). Then, it must add the point (<var title="">x</var>, <var title="">y</var>) to the subpath. <a href="#refsBEZIER">[BEZIER]</a></p> + + <hr/><p>The <dfn id="dom-context-2d-arcto" title="dom-context-2d-arcTo"><code>arcTo(<var title="">x1</var>, <var title="">y1</var>, <var title="">x2</var>, + <var title="">y2</var>, <var title="">radius</var>)</code></dfn> + method must first <a href="#ensure-there-is-a-subpath">ensure there is a subpath</a> for <span title="">(<var title="">x1</var>, <var title="">y1</var>)</span>. Then, the behavior depends on the + arguments and the last point in the subpath, as described below.</p> + + <p>Negative values for <var title="">radius</var> must cause the + implementation to raise an <code><a href="#index_size_err">INDEX_SIZE_ERR</a></code> + exception.</p> + + <p>Let the point (<var title="">x0</var>, <var title="">y0</var>) be + the last point in the subpath.</p> + + <p>If the point (<var title="">x0</var>, <var title="">y0</var>) is + equal to the point (<var title="">x1</var>, <var title="">y1</var>), + or if the point (<var title="">x1</var>, <var title="">y1</var>) is + equal to the point (<var title="">x2</var>, <var title="">y2</var>), + or if the radius <var title="">radius</var> is zero, then the method + must add the point (<var title="">x1</var>, <var title="">y1</var>) + to the subpath, and connect that point to the previous point (<var title="">x0</var>, <var title="">y0</var>) by a straight line.</p> + + <p>Otherwise, if the points (<var title="">x0</var>, <var title="">y0</var>), (<var title="">x1</var>, <var title="">y1</var>), and (<var title="">x2</var>, <var title="">y2</var>) all lie on a single straight line, then the + method must add the point (<var title="">x1</var>, <var title="">y1</var>) to the subpath, and connect that point to the + previous point (<var title="">x0</var>, <var title="">y0</var>) by a + straight line.</p> + + <p>Otherwise, let <var title="">The Arc</var> be the shortest arc + given by circumference of the circle that has radius <var title="">radius</var>, and that has one point tangent to the + half-infinite line that crosses the point (<var title="">x0</var>, + <var title="">y0</var>) and ends at the point (<var title="">x1</var>, <var title="">y1</var>), and that has a different + point tangent to the half-infinite line that ends at the point (<var title="">x1</var>, <var title="">y1</var>) and crosses the point + (<var title="">x2</var>, <var title="">y2</var>). The points at + which this circle touches these two lines are called the start and + end tangent points respectively. The method must connect the point + (<var title="">x0</var>, <var title="">y0</var>) to the start + tangent point by a straight line, adding the start tangent point to + the subpath, and then must connect the start tangent point to the + end tangent point by <var title="">The Arc</var>, adding the end + tangent point to the subpath.</p> + + <hr/><p>The <dfn id="dom-context-2d-arc" title="dom-context-2d-arc"><code>arc(<var title="">x</var>, <var title="">y</var>, <var title="">radius</var>, + <var title="">startAngle</var>, <var title="">endAngle</var>, <var title="">anticlockwise</var>)</code></dfn> method draws an arc. If + the context has any subpaths, then the method must add a straight + line from the last point in the subpath to the start point of the + arc. In any case, it must draw the arc between the start point of + the arc and the end point of the arc, and add the start and end + points of the arc to the subpath. The arc and its start and end + points are defined as follows:</p> + + <p>Consider a circle that has its origin at (<var title="">x</var>, + <var title="">y</var>) and that has radius <var title="">radius</var>. The points at <var title="">startAngle</var> + and <var title="">endAngle</var> along this circle's circumference, + measured in radians clockwise from the positive x-axis, are the + start and end points respectively.</p> + + <p>If the <var title="">anticlockwise</var> argument is omitted or + false and <span title=""><var title="">endAngle</var>-<var title="">startAngle</var></span> is equal to or greater than <span title="">2π</span>, or, if the <var title="">anticlockwise</var> + argument is <em>true</em> and <span title=""><var title="">startAngle</var>-<var title="">endAngle</var></span> is + equal to or greater than <span title="">2π</span>, then the arc + is the whole circumference of this circle.</p> + + <p>Otherwise, the arc is the path along the circumference of this + circle from the start point to the end point, going anti-clockwise + if the <var title="">anticlockwise</var> argument is true, and + clockwise otherwise. Since the points are on the circle, as opposed + to being simply angles from zero, the arc can never cover an angle + greater than <span title="">2π</span> radians. If the two points are the + same, or if the radius is zero, then the arc is defined as being of + zero length in both directions.</p> + + <p>Negative values for <var title="">radius</var> must cause the + implementation to raise an <code><a href="#index_size_err">INDEX_SIZE_ERR</a></code> + exception.</p> + + <hr/><p>The <dfn id="dom-context-2d-rect" title="dom-context-2d-rect"><code>rect(<var title="">x</var>, <var title="">y</var>, <var title="">w</var>, <var title="">h</var>)</code></dfn> method must create a new subpath + containing just the four points (<var title="">x</var>, <var title="">y</var>), (<var title="">x</var>+<var title="">w</var>, + <var title="">y</var>), (<var title="">x</var>+<var title="">w</var>, <var title="">y</var>+<var title="">h</var>), + (<var title="">x</var>, <var title="">y</var>+<var title="">h</var>), with those four points connected by straight + lines, and must then mark the subpath as closed. It must then create + a new subpath with the point (<var title="">x</var>, <var title="">y</var>) as the only point in the subpath.</p> + + + <!-- v6 feature request: + * points as a primitive shape + http://home.comcast.net/~urbanjost/canvas/vogle4.html + --> + + + <p>The <dfn id="dom-context-2d-fill" title="dom-context-2d-fill"><code>fill()</code></dfn> + method must fill all the subpaths of the current path, using + <code title="dom-context-2d-fillStyle"><a href="#dom-context-2d-fillstyle">fillStyle</a></code>, and using + the non-zero winding number rule. Open subpaths must be implicitly + closed when being filled (without affecting the actual + subpaths).</p> + + <p class="note">Thus, if two overlapping but otherwise independent + subpaths have opposite windings, they cancel out and result in no + fill. If they have the same winding, that area just gets painted + once.</p> + + <p>The <dfn id="dom-context-2d-stroke" title="dom-context-2d-stroke"><code>stroke()</code></dfn> method + must calculate the strokes of all the subpaths of the current path, + using the <code title="dom-context-2d-lineWidth"><a href="#dom-context-2d-linewidth">lineWidth</a></code>, + <code title="dom-context-2d-lineCap"><a href="#dom-context-2d-linecap">lineCap</a></code>, <code title="dom-context-2d-lineJoin"><a href="#dom-context-2d-linejoin">lineJoin</a></code>, and (if + appropriate) <code title="dom-context-2d-miterLimit"><a href="#dom-context-2d-miterlimit">miterLimit</a></code> attributes, and + then fill the combined stroke area using the <code title="dom-context-2d-strokeStyle"><a href="#dom-context-2d-strokestyle">strokeStyle</a></code> + attribute.</p> + + <p class="note">Since the subpaths are all stroked as one, + overlapping parts of the paths in one stroke operation are treated + as if their union was what was painted.</p> + + <p>Paths, when filled or stroked, must be painted without affecting + the current path, and must be subject to <a href="#shadows" title="shadows">shadow effects</a>, <a href="#dom-context-2d-globalalpha" title="dom-context-2d-globalAlpha">global alpha</a>, the <a href="#clipping-region" title="clipping region">clipping region</a>, and <a href="#dom-context-2d-globalcompositeoperation" title="dom-context-2d-globalCompositeOperation">global composition + operators</a>. (Transformations affect the path when the path is + created, not when it is painted, though the stroke <em>style</em> is + still affected by the transformation during painting.)</p> + + <p>Zero-length line segments must be pruned before stroking a + path. Empty subpaths must be ignored.</p> + + <hr/><p id="dom-context-2d-drawosfocusring">The <dfn id="dom-context-2d-drawsystemfocusring" title="dom-context-2d-drawSystemFocusRing"><code>drawSystemFocusRing(<var title="">element</var>)</code></dfn> method, when invoked, must run + the following steps:</p> + + <ol><li><p>If <var title="">element</var> is not focused or is not a + descendant of the element with whose context the method is + associated, then abort these steps.</p></li> + + <li> + + <p>If the user has requested the use of particular focus rings + (e.g. high-contrast focus rings), or if the <var title="">element</var> would have a focus ring drawn around it, + then draw a focus ring of the appropriate style along the path, + following platform conventions, and abort these steps.</p> + + <p class="note">Some platforms only draw focus rings around + elements that have been focused from the keyboard, and not those + focused from the mouse. Other platforms simply don't draw focus + rings around some elements at all unless relevant accessibility + features are enabled. This API is intended to follow these + conventions. User agents that implement distinctions based on the + manner in which the element was focused are encouraged to classify + focus driven by the <code title="dom-focus"><a href="#dom-focus">focus()</a></code> method + based on the kind of user interaction event from which the call + was triggered (if any).</p> + + <p>The focus ring should not be subject to the <a href="#shadows" title="shadows">shadow effects</a>, the <a href="#dom-context-2d-globalalpha" title="dom-context-2d-globalAlpha">global alpha</a>, or the <a href="#dom-context-2d-globalcompositeoperation" title="dom-context-2d-globalCompositeOperation">global composition + operators</a>, but <em>should</em> be subject to the <a href="#clipping-region" title="clipping region">clipping region</a>.</p> + + </li> + + <li> + + <p>Optionally, <a href="#inform">inform the user</a> that the + focus is at the location given by the path. User agents may wait + until the next time the <a href="#event-loop">event loop</a> reaches its + "update the rendering" step to optionally inform the user.</p> + + </li> + + </ol><p>The <dfn id="dom-context-2d-drawcustomfocusring" title="dom-context-2d-drawCustomFocusRing"><code>drawCustomFocusRing(<var title="">element</var>)</code></dfn> method, when invoked, must run + the following steps:</p> + + <ol><li><p>If <var title="">element</var> is not focused or is not a + descendant of the element with whose context the method is + associated, then return false and abort these steps.</p></li> + + <li> + + <p>If the user has requested the use of particular focus rings + (e.g. high-contrast focus rings), then draw a focus ring of the + appropriate style along the path, return false, and abort these + steps.</p> + + <p>The focus ring should not be subject to the <a href="#shadows" title="shadows">shadow effects</a>, the <a href="#dom-context-2d-globalalpha" title="dom-context-2d-globalAlpha">global alpha</a>, or the <a href="#dom-context-2d-globalcompositeoperation" title="dom-context-2d-globalCompositeOperation">global composition + operators</a>, but <em>should</em> be subject to the <a href="#clipping-region" title="clipping region">clipping region</a>.</p> + + </li> + + <li> + + <p>Optionally, <a href="#inform">inform the user</a> that the + focus is at the location given by the path. User agents may wait + until the next time the <a href="#event-loop">event loop</a> reaches its + "update the rendering" step to optionally inform the user.</p> + + </li> + + <li><p>Return true.</p></li> + + </ol><p>The <dfn id="dom-context-2d-scrollpathintoview" title="dom-context-2d-scrollPathIntoView"><code>scrollPathIntoView()</code></dfn> + method, when invoked, must run the following steps:</p> + + <ol><li><p>Let <var title="">notional child</var> be a hypothetical + element that is a rendered child of the <code><a href="#the-canvas-element">canvas</a></code> element + whose dimensions are exactly the rectangle of the bounding box of + the current path.</p></li> + + <li><p><span title="scroll an element into view">Scroll <var title="">notional child</var> into view</span> with the <var title="">align to top flag</var> set.</p> + + </li><li><p>Optionally, <a href="#inform">inform the user</a> that the + caret and/or selection cover <var title="">the specified + rectangle</var> of the canvas. User agents may wait until the next + time the <a href="#event-loop">event loop</a> reaches its "update the rendering" + step to optionally inform the user.</p></li> + + </ol><p class="note" id="inform">"Inform the user", as used in this + section, could mean calling a system accessibility API, which would + notify assistive technologies such as magnification tools. To + properly drive magnification based on a focus change, a system + accessibility API driving a screen magnifier needs the bounds for + the newly focused object. The methods above are intended to enable + this by allowing the user agent to report the bounding box of the + path used to render the focus ring as the bounds of the <var title="">element</var> element passed as an argument, if that + element is focused, and the bounding box of the area to which the + user agent is scrolling as the bounding box of the current + selection.</p> + + <hr/><p>The <dfn id="dom-context-2d-clip" title="dom-context-2d-clip"><code>clip()</code></dfn> + method must create a new <dfn id="clipping-region">clipping region</dfn> by calculating + the intersection of the current clipping region and the area + described by the current path, using the non-zero winding number + rule. Open subpaths must be implicitly closed when computing the + clipping region, without affecting the actual subpaths. The new + clipping region replaces the current clipping region.</p> + + <p>When the context is initialized, the clipping region must be set + to the rectangle with the top left corner at (0,0) and the width and + height of the coordinate space.</p> + + <!-- v6 + Jordan OSETE suggests: + * support ways of extending the clipping region (union instead of intersection) + - also "add", "subtract", "replace", "intersect" and "xor" + * support ways of resetting the clipping region without save/restore + --> + + <hr/><p>The <dfn id="dom-context-2d-ispointinpath" title="dom-context-2d-isPointInPath"><code>isPointInPath(<var title="">x</var>, <var title="">y</var>)</code></dfn> method must + return true if the point given by the <var title="">x</var> and <var title="">y</var> coordinates passed to the method, when treated as + coordinates in the canvas coordinate space unaffected by the current + transformation, is inside the current path as determined by the + non-zero winding number rule; and must return false + otherwise. Points on the path itself are considered to be inside the + path. If either of the arguments is infinite or NaN, then the method + must return false.</p> + + </div> + + + <div class="example" id="drawCustomFocusRingExample"> + + <p>This <code><a href="#the-canvas-element">canvas</a></code> element has a couple of checkboxes. The + path-related commands are highlighted:</p> + + <pre><canvas height=400 width=750> + <label><input type=checkbox id=showA> Show As</label> + <label><input type=checkbox id=showB> Show Bs</label> + <!-- ... --> +</canvas> +<script> + function drawCheckbox(context, element, x, y, paint) { + context.save(); + context.font = '10px sans-serif'; + context.textAlign = 'left'; + context.textBaseline = 'middle'; + var metrics = context.measureText(element.labels[0].textContent); + if (paint) { +<strong> context.beginPath(); + context.strokeStyle = 'black'; + context.rect(x-5, y-5, 10, 10); + context.stroke(); +</strong> if (element.checked) { +<strong> context.fillStyle = 'black'; + context.fill(); +</strong> } + context.fillText(element.labels[0].textContent, x+5, y); + } +<strong> context.beginPath(); + context.rect(x-7, y-7, 12 + metrics.width+2, 14); + if (paint && context.drawCustomFocusRing(element)) { + context.strokeStyle = 'silver'; + context.stroke(); + } +</strong> context.restore(); + } + function drawBase() { /* ... */ } + function drawAs() { /* ... */ } + function drawBs() { /* ... */ } + function redraw() { + var canvas = document.getElementsByTagName('canvas')[0]; + var context = canvas.getContext('2d'); + context.clearRect(0, 0, canvas.width, canvas.height); + drawCheckbox(context, document.getElementById('showA'), 20, 40, true); + drawCheckbox(context, document.getElementById('showB'), 20, 60, true); + drawBase(); + if (document.getElementById('showA').checked) + drawAs(); + if (document.getElementById('showB').checked) + drawBs(); + } + function processClick(event) { + var canvas = document.getElementsByTagName('canvas')[0]; + var context = canvas.getContext('2d'); + var x = event.clientX; + var y = event.clientY; + while (node) { + x -= node.offsetLeft - node.scrollLeft; + y -= node.offsetTop - node.scrollTop; + node = node.offsetParent; + } + drawCheckbox(context, document.getElementById('showA'), 20, 40, false); + if (<strong>context.isPointInPath(x, y)</strong>) + document.getElementById('showA').checked = !(document.getElementById('showA').checked); + drawCheckbox(context, document.getElementById('showB'), 20, 60, false); + if (<strong>context.isPointInPath(x, y)</strong>) + document.getElementById('showB').checked = !(document.getElementById('showB').checked); + redraw(); + } + document.getElementsByTagName('canvas')[0].addEventListener('focus', redraw, true); + document.getElementsByTagName('canvas')[0].addEventListener('blur', redraw, true); + document.getElementsByTagName('canvas')[0].addEventListener('change', redraw, true); + document.getElementsByTagName('canvas')[0].addEventListener('click', processClick, false); + redraw(); +</script></pre> +<!-- http://software.hixie.ch/utilities/js/live-dom-viewer/saved/340 --> + + </div> + + + + + <h6 id="text-0"><span class="secno">4.8.11.1.9 </span>Text</h6> <!-- a v3 feature --> + + <dl class="domintro"><dt><var title="">context</var> . <code title="dom-context-2d-font"><a href="#dom-context-2d-font">font</a></code> [ = <var title="">value</var> ]</dt> + + <dd> + + <p>Returns the current font settings.</p> + + <p>Can be set, to change the font. The syntax is the same as for + the CSS 'font' property; values that cannot be parsed as CSS font + values are ignored.</p> + + <p>Relative keywords and lengths are computed relative to the font + of the <code><a href="#the-canvas-element">canvas</a></code> element.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-textAlign"><a href="#dom-context-2d-textalign">textAlign</a></code> [ = <var title="">value</var> ]</dt> + + <dd> + + <p>Returns the current text alignment settings.</p> + + <p>Can be set, to change the alignment. The possible values are + <code title="">start</code>, <code title="">end</code>, <code title="">left</code>, <code title="">right</code>, and <code title="">center</code>. Other values are ignored. The default is + <code title="">start</code>.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-textBaseline"><a href="#dom-context-2d-textbaseline">textBaseline</a></code> [ = <var title="">value</var> ]</dt> + + <dd> + + <p>Returns the current baseline alignment settings.</p> + + <p>Can be set, to change the baseline alignment. The possible + values and their meanings are given below. Other values are + ignored. The default is <code title="">alphabetic</code>.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-fillText"><a href="#dom-context-2d-filltext">fillText</a></code>(<var title="">text</var>, <var title="">x</var>, <var title="">y</var> [, <var title="">maxWidth</var> ] )</dt> + <dt><var title="">context</var> . <code title="dom-context-2d-strokeText"><a href="#dom-context-2d-stroketext">strokeText</a></code>(<var title="">text</var>, <var title="">x</var>, <var title="">y</var> [, <var title="">maxWidth</var> ] )</dt> + + <dd> + + <p>Fills or strokes (respectively) the given text at the given + position. If a maximum width is provided, the text will be scaled + to fit that width if necessary.</p> + + </dd> + + <dt><var title="">metrics</var> = <var title="">context</var> . <code title="dom-context-2d-measureText"><a href="#dom-context-2d-measuretext">measureText</a></code>(<var title="">text</var>)</dt> + + <dd> + + <p>Returns a <code><a href="#textmetrics">TextMetrics</a></code> object with the metrics of the given text in the current font.</p> + + </dd> + + <dt><var title="">metrics</var> . <code title="dom-textmetrics-width"><a href="#dom-textmetrics-width">width</a></code></dt> + + <dd> + + <p>Returns the advance width of the text that was passed to the + <code title="dom-context-2d-measureText"><a href="#dom-context-2d-measuretext">measureText()</a></code> + method.</p> + + </dd> + + </dl><div class="impl"> + + <p>The <dfn id="dom-context-2d-font" title="dom-context-2d-font"><code>font</code></dfn> IDL + attribute, on setting, must be parsed the same way as the 'font' + property of CSS (but without supporting property-independent style + sheet syntax like 'inherit'), and the resulting font must be + assigned to the context, with the 'line-height' component forced to + 'normal', with the 'font-size' component converted to CSS pixels, + and with system fonts being computed to explicit values. If the new + value is syntactically incorrect (including using + property-independent style sheet syntax like 'inherit' or + 'initial'), then it must be ignored, without assigning a new font + value. <a href="#refsCSS">[CSS]</a></p> + + <p>Font names must be interpreted in the context of the + <code><a href="#the-canvas-element">canvas</a></code> element's stylesheets; any fonts embedded using + <code title="">@font-face</code> must therefore be available once + they are loaded. (If a font is referenced before it is fully loaded, + then it must be treated as if it was an unknown font, falling back + to another as described by the relevant CSS specifications.) <a href="#refsCSSFONTS">[CSSFONTS]</a></p> + + <p>Only vector fonts should be used by the user agent; if a user + agent were to use bitmap fonts then transformations would likely + make the font look very ugly.</p> + + <p>On getting, the <code title="dom-context-2d-font"><a href="#dom-context-2d-font">font</a></code> + attribute must return the <span title="serializing a CSS + value">serialized form</span> of the current font of the context + (with no 'line-height' component). <a href="#refsCSSOM">[CSSOM]</a></p> + + <div class="example"> + + <p>For example, after the following statement:</p> + + <pre>context.font = 'italic 400 12px/2 Unknown Font, sans-serif';</pre> + + <p>...the expression <code title="">context.font</code> would + evaluate to the string "<code title="">italic 12px "Unknown Font", sans-serif</code>". The + "400" font-weight doesn't appear because that is the default + value. The line-height doesn't appear because it is forced to + "normal", the default value.</p> + + </div> + + <p>When the context is created, the font of the context must be set + to 10px sans-serif. When the 'font-size' component is set to lengths + using percentages, 'em' or 'ex' units, or the 'larger' or 'smaller' + keywords, these must be interpreted relative to the computed value + of the 'font-size' property of the corresponding <code><a href="#the-canvas-element">canvas</a></code> + element at the time that the attribute is set. When the + 'font-weight' component is set to the relative values 'bolder' and + 'lighter', these must be interpreted relative to the computed value + of the 'font-weight' property of the corresponding + <code><a href="#the-canvas-element">canvas</a></code> element at the time that the attribute is + set. If the computed values are undefined for a particular case + (e.g. because the <code><a href="#the-canvas-element">canvas</a></code> element is not <a href="#in-a-document">in a + <code>Document</code></a>), then the relative keywords must be + interpreted relative to the normal-weight 10px sans-serif + default.</p> + + <p>The <dfn id="dom-context-2d-textalign" title="dom-context-2d-textAlign"><code>textAlign</code></dfn> IDL + attribute, on getting, must return the current value. On setting, if + the value is one of <code title="">start</code>, <code title="">end</code>, <code title="">left</code>, <code title="">right</code>, or <code title="">center</code>, then the + value must be changed to the new value. Otherwise, the new value + must be ignored. When the context is created, the <code title="dom-context-2d-textAlign"><a href="#dom-context-2d-textalign">textAlign</a></code> attribute must + initially have the value <code title="">start</code>.</p> + + <p>The <dfn id="dom-context-2d-textbaseline" title="dom-context-2d-textBaseline"><code>textBaseline</code></dfn> + IDL attribute, on getting, must return the current value. On + setting, if the value is one of <code title="dom-context-2d-textBaseline-top"><a href="#dom-context-2d-textbaseline-top">top</a></code>, <code title="dom-context-2d-textBaseline-hanging"><a href="#dom-context-2d-textbaseline-hanging">hanging</a></code>, <code title="dom-context-2d-textBaseline-middle"><a href="#dom-context-2d-textbaseline-middle">middle</a></code>, <code title="dom-context-2d-textBaseline-alphabetic"><a href="#dom-context-2d-textbaseline-alphabetic">alphabetic</a></code>, + <code title="dom-context-2d-textBaseline-ideographic"><a href="#dom-context-2d-textbaseline-ideographic">ideographic</a></code>, + or <code title="dom-context-2d-textBaseline-bottom"><a href="#dom-context-2d-textbaseline-bottom">bottom</a></code>, + then the value must be changed to the new value. Otherwise, the new + value must be ignored. When the context is created, the <code title="dom-context-2d-textBaseline"><a href="#dom-context-2d-textbaseline">textBaseline</a></code> attribute + must initially have the value <code title="">alphabetic</code>.</p> + + </div> + + <p>The <code title="dom-context-2d-textBaseline"><a href="#dom-context-2d-textbaseline">textBaseline</a></code> + attribute's allowed keywords correspond to alignment points in the + font:</p> + + <p><img alt="The top of the em square is roughly at the top of the glyphs in a font, the hanging baseline is where some glyphs like आ are anchored, the middle is half-way between the top of the em square and the bottom of the em square, the alphabetic baseline is where characters like Á, ÿ, f, and Ω are anchored, the ideographic baseline is where glyphs like 私 and 達 are anchored, and the bottom of the em square is roughly at the bottom of the glyphs in a font. The top and bottom of the bounding box can be far from these baselines, due to glyphs extending far outside the em square." height="300" src="http://www.whatwg.org/specs/web-apps/current-work/http://images.whatwg.org/baselines.png" width="738"/></p> + + <p>The keywords map to these alignment points as follows:</p> + + <dl><dt><dfn id="dom-context-2d-textbaseline-top" title="dom-context-2d-textBaseline-top"><code>top</code></dfn> + </dt><dd>The top of the em square</dd> + + <dt><dfn id="dom-context-2d-textbaseline-hanging" title="dom-context-2d-textBaseline-hanging"><code>hanging</code></dfn> + </dt><dd>The hanging baseline</dd> + + <dt><dfn id="dom-context-2d-textbaseline-middle" title="dom-context-2d-textBaseline-middle"><code>middle</code></dfn> + </dt><dd>The middle of the em square</dd> + + <dt><dfn id="dom-context-2d-textbaseline-alphabetic" title="dom-context-2d-textBaseline-alphabetic"><code>alphabetic</code></dfn> + </dt><dd>The alphabetic baseline</dd> + + <dt><dfn id="dom-context-2d-textbaseline-ideographic" title="dom-context-2d-textBaseline-ideographic"><code>ideographic</code></dfn> + </dt><dd>The ideographic baseline</dd> + + <dt><dfn id="dom-context-2d-textbaseline-bottom" title="dom-context-2d-textBaseline-bottom"><code>bottom</code></dfn> + </dt><dd>The bottom of the em square</dd> + + </dl><div class="impl"> + + <p>The <dfn id="dom-context-2d-filltext" title="dom-context-2d-fillText"><code>fillText()</code></dfn> and + <dfn id="dom-context-2d-stroketext" title="dom-context-2d-strokeText"><code>strokeText()</code></dfn> + methods take three or four arguments, <var title="">text</var>, <var title="">x</var>, <var title="">y</var>, and optionally <var title="">maxWidth</var>, and render the given <var title="">text</var> at the given (<var title="">x</var>, <var title="">y</var>) coordinates ensuring that the text isn't wider + than <var title="">maxWidth</var> if specified, using the current + <code title="dom-context-2d-font"><a href="#dom-context-2d-font">font</a></code>, <code title="dom-context-2d-textAlign"><a href="#dom-context-2d-textalign">textAlign</a></code>, and <code title="dom-context-2d-textBaseline"><a href="#dom-context-2d-textbaseline">textBaseline</a></code> + values. Specifically, when the methods are called, the user agent + must run the following steps:</p> + + <ol><li><p>If <var title="">maxWidth</var> is present but less than or + equal to zero, return without doing anything; abort these + steps.</p></li> + + <li><p>Let <var title="">font</var> be the current font of the + context, as given by the <code title="dom-context-2d-font"><a href="#dom-context-2d-font">font</a></code> attribute.</p></li> + + <li><p>Replace all the <a href="#space-character" title="space character">space + characters</a> in <var title="">text</var> with U+0020 SPACE + characters.</p></li> + + <li><p>Form a hypothetical infinitely wide CSS line box containing + a single inline box containing the text <var title="">text</var>, + with all the properties at their initial values except the 'font' + property of the inline box set to <var title="">font</var>, the + 'direction' property of the inline box set to <a href="#the-directionality">the + directionality</a> of the <code><a href="#the-canvas-element">canvas</a></code> element, and the + 'white-space' property set to 'pre'. <a href="#refsCSS">[CSS]</a></p></li> + + <!-- if you insert a step here, make sure to adjust the next step's + final words --> + + <li><p>If the <var title="">maxWidth</var> argument was specified + and the hypothetical width of the inline box in the hypothetical + line box is greater than <var title="">maxWidth</var> CSS pixels, + then change <var title="">font</var> to have a more condensed font + (if one is available or if a reasonably readable one can be + synthesized by applying a horizontal scale factor to the font) or a + smaller font, and return to the previous step.</p></li> + + <li> + + <p>Let the <var title="">anchor point</var> be a point on the + inline box, determined by the <code title="dom-context-2d-textAlign"><a href="#dom-context-2d-textalign">textAlign</a></code> and <code title="dom-context-2d-textBaseline"><a href="#dom-context-2d-textbaseline">textBaseline</a></code> values, as + follows:</p> + + <p>Horizontal position:</p> + + <dl><dt> If <code title="dom-context-2d-textAlign"><a href="#dom-context-2d-textalign">textAlign</a></code> is <code title="">left</code></dt> + <dt> If <code title="dom-context-2d-textAlign"><a href="#dom-context-2d-textalign">textAlign</a></code> is <code title="">start</code> and <a href="#the-directionality">the directionality</a> of the + <code><a href="#the-canvas-element">canvas</a></code> element is 'ltr'</dt> + <dt> If <code title="dom-context-2d-textAlign"><a href="#dom-context-2d-textalign">textAlign</a></code> is <code title="">end</code> and <a href="#the-directionality">the directionality</a> of the + <code><a href="#the-canvas-element">canvas</a></code> element is 'rtl'</dt> + + <dd>Let the <var title="">anchor point</var>'s horizontal + position be the left edge of the inline box.</dd> + + + <dt> If <code title="dom-context-2d-textAlign"><a href="#dom-context-2d-textalign">textAlign</a></code> is <code title="">right</code></dt> + <dt> If <code title="dom-context-2d-textAlign"><a href="#dom-context-2d-textalign">textAlign</a></code> is <code title="">end</code> and <a href="#the-directionality">the directionality</a> of the + <code><a href="#the-canvas-element">canvas</a></code> element is 'ltr'</dt> + <dt> If <code title="dom-context-2d-textAlign"><a href="#dom-context-2d-textalign">textAlign</a></code> is <code title="">start</code> and <a href="#the-directionality">the directionality</a> of the + <code><a href="#the-canvas-element">canvas</a></code> element is 'rtl'</dt> + + <dd>Let the <var title="">anchor point</var>'s horizontal + position be the right edge of the inline box.</dd> + + + <dt> If <code title="dom-context-2d-textAlign"><a href="#dom-context-2d-textalign">textAlign</a></code> is <code title="">center</code></dt> + + <dd>Let the <var title="">anchor point</var>'s horizontal + position be half way between the left and right edges of the + inline box.</dd> + + </dl><p>Vertical position:</p> + + <dl><dt> If <code title="dom-context-2d-textBaseline"><a href="#dom-context-2d-textbaseline">textBaseline</a></code> is <code title="dom-context-2d-textBaseline-top"><a href="#dom-context-2d-textbaseline-top">top</a></code></dt> + + <dd>Let the <var title="">anchor point</var>'s vertical position + be the top of the em box of the first available font of the + inline box.</dd> + + + <dt> If <code title="dom-context-2d-textBaseline"><a href="#dom-context-2d-textbaseline">textBaseline</a></code> is <code title="dom-context-2d-textBaseline-hanging"><a href="#dom-context-2d-textbaseline-hanging">hanging</a></code></dt> + + <dd>Let the <var title="">anchor point</var>'s vertical position + be the hanging baseline of the first available font of the inline + box.</dd> + + + <dt> If <code title="dom-context-2d-textBaseline"><a href="#dom-context-2d-textbaseline">textBaseline</a></code> is <code title="dom-context-2d-textBaseline-middle"><a href="#dom-context-2d-textbaseline-middle">middle</a></code></dt> + + <dd>Let the <var title="">anchor point</var>'s vertical position + be half way between the bottom and the top of the em box of the + first available font of the inline box.</dd> + + + <dt> If <code title="dom-context-2d-textBaseline"><a href="#dom-context-2d-textbaseline">textBaseline</a></code> is <code title="dom-context-2d-textBaseline-alphabetic"><a href="#dom-context-2d-textbaseline-alphabetic">alphabetic</a></code></dt> + + <dd>Let the <var title="">anchor point</var>'s vertical position + be the alphabetic baseline of the first available font of the inline + box.</dd> + + + <dt> If <code title="dom-context-2d-textBaseline"><a href="#dom-context-2d-textbaseline">textBaseline</a></code> is <code title="dom-context-2d-textBaseline-ideographic"><a href="#dom-context-2d-textbaseline-ideographic">ideographic</a></code></dt> + + <dd>Let the <var title="">anchor point</var>'s vertical position + be the ideographic baseline of the first available font of the inline + box.</dd> + + + <dt> If <code title="dom-context-2d-textBaseline"><a href="#dom-context-2d-textbaseline">textBaseline</a></code> is <code title="dom-context-2d-textBaseline-bottom"><a href="#dom-context-2d-textbaseline-bottom">bottom</a></code></dt> + + <dd>Let the <var title="">anchor point</var>'s vertical position + be the bottom of the em box of the first available font of the + inline box.</dd> + + </dl></li> + + <li> + + <p>Paint the hypothetical inline box as the shape given by the + text's glyphs, as transformed by the <a href="#transformations" title="dom-context-2d-transformation">current transformation + matrix</a>, and anchored and sized so that before applying the + <a href="#transformations" title="dom-context-2d-transformation">current transformation + matrix</a>, the <var title="">anchor point</var> is at (<var title="">x</var>, <var title="">y</var>) and each CSS pixel is + mapped to one coordinate space unit.</p> + + <p>For <code title="dom-context-2d-fillText"><a href="#dom-context-2d-filltext">fillText()</a></code> + <code title="dom-context-2d-fillStyle"><a href="#dom-context-2d-fillstyle">fillStyle</a></code> must be + applied to the glyphs and <code title="dom-context-2d-strokeStyle"><a href="#dom-context-2d-strokestyle">strokeStyle</a></code> must be + ignored. For <code title="dom-context-2d-strokeText"><a href="#dom-context-2d-stroketext">strokeText()</a></code> the reverse + holds and <code title="dom-context-2d-strokeStyle"><a href="#dom-context-2d-strokestyle">strokeStyle</a></code> must be + applied to the glyph outlines and <code title="dom-context-2d-fillStyle"><a href="#dom-context-2d-fillstyle">fillStyle</a></code> must be + ignored.</p> + + <p>Text is painted without affecting the current path, and is + subject to <a href="#shadows" title="shadows">shadow effects</a>, <a href="#dom-context-2d-globalalpha" title="dom-context-2d-globalAlpha">global alpha</a>, the <a href="#clipping-region" title="clipping region">clipping region</a>, and <a href="#dom-context-2d-globalcompositeoperation" title="dom-context-2d-globalCompositeOperation">global composition + operators</a>.</p> + + </li> + + </ol><!--v6DVT - this is commented out until CSS can get its act together +enough to actual specify vertical text rendering (how long have we +been waiting now?) + +WHEN EDITING THIS, FIX THE PARTS MARKED "XXX" BELOW + + <p>The <dfn + title="dom-context-2d-fillVerticalText"><code>fillVerticalText()</code></dfn> + and <dfn + title="dom-context-2d-strokeVerticalText"><code>strokeVerticalText()</code></dfn> + methods take three or four arguments, <var title="">text</var>, <var + title="">x</var>, <var title="">y</var>, and optionally <var + title="">maxHeight</var>, and render the given <var + title="">text</var> as vertical text at the given (<var + title="">x</var>, <var title="">y</var>) coordinates ensuring that + the text isn't taller than <var title="">maxHeight</var> if + specified, using the current <code + title="dom-context-2d-font">font</code> and <code + title="dom-context-2d-textAlign">textAlign</code> + values. Specifically, when the methods are called, the user agent + must run the following steps:</p> + + <ol> + + <li><p>If <var title="">maxHeight</var> is present but less than or + equal to zero, return without doing anything; abort these + steps.</p></li> + + <li><p>Let <var title="">font</var> be the current font of the + context, as given by the <code + title="dom-context-2d-font">font</code> attribute.</p></li> + + <li><p>Replace all the <span title="space character">space + characters</span> in <var title="">text</var> with U+0020 SPACE + characters.</p></li> + + <li><p>Form a <em class="XXX">whatever CSS ends up calling + vertical line boxes and inline boxes</em> containing the text <var + title="">text</var>, with all the properties at their initial + values except the 'font' property of the inline box set to <var + title="">font</var> and the 'direction' property of the inline + box set to <span>the directionality</span> of the <code>canvas</code> + element.</p></li> + + <!- - if you insert a step here, make sure to adjust the next step's + final words - -> + + <li><p>If the <var title="">maxHeight</var> argument was specified + and the hypothetical height of the <em class="XXX">box</em> + in the hypothetical line box is greater than <var + title="">maxHeight</var> CSS pixels, then change <var + title="">font</var> to have a more condensed font (if one is + available or if a reasonably readable one can be synthesized by + applying an appropriate scale factor to the font) or a smaller + font, and return to the previous step.</p></li> + + <li> + + <p>Let the <var title="">anchor point</var> be a point on the <em + class="XXX">inline box</var>, determined by the <code + title="dom-context-2d-textAlign">textAlign</code>, as follows:</p> + + <p>Vertical position:</p> + + <dl> + + <dt> If <code + title="dom-context-2d-textAlign">textAlign</code> is <code + title="">start</code></dt> + <dt> If <code + title="dom-context-2d-textAlign">textAlign</code> is <code + title="">left</code> and <span>the directionality</span> of the + <code>canvas</code> element is 'ltr'</dt> + <dt> If <code + title="dom-context-2d-textAlign">textAlign</code> is <code + title="">right</code> and <span>the directionality</span> of the + <code>canvas</code> element is 'rtl'</dt> + + <dd>Let the <var title="">anchor point</var>'s vertical + position be the top edge of the <em class="XXX">inline + box</em>.</dd> + + <dt> If <code + title="dom-context-2d-textAlign">textAlign</code> is <code + title="">end</code></dt> + <dt> If <code + title="dom-context-2d-textAlign">textAlign</code> is <code + title="">right</code> and <span>the directionality</span> of the + <code>canvas</code> element is 'ltr'</dt> + <dt> If <code + title="dom-context-2d-textAlign">textAlign</code> is <code + title="">left</code> and <span>the directionality</span> of the + <code>canvas</code> element is 'rtl'</dt> + + <dd>Let the <var title="">anchor point</var>'s vertical + position be the bottom edge of the <em class="XXX">inline + box</em>.</dd> + + + <dt> If <code + title="dom-context-2d-textAlign">textAlign</code> is <code + title="">center</code></dt> + + <dd>Let the <var title="">anchor point</var>'s vertical position + be half way between the top and bottom edges of the <em + class="XXX">inline box</em>.</dd> + + </dl> + + <p>Let the horizontal position be half way between the left and + right edges of the em box of the first available font of the <em + class="XXX">inline box</em>.</p> + + </li> + + <li> + + <p>Paint the hypothetical inline box as the shape given by the + text's glyphs, as transformed by the <span + title="dom-context-2d-transformation">current transformation + matrix</span>, and anchored and sized so that before applying the + <span title="dom-context-2d-transformation">current transformation + matrix</span>, the <var title="">anchor point</var> is at (<var + title="">x</var>, <var title="">y</var>) and each CSS pixel is + mapped to one coordinate space unit.</p> + + <p>For <code + title="dom-context-2d-fillVerticalText">fillVerticalText()</code> + <code title="dom-context-2d-fillStyle">fillStyle</code> must be + applied and <code + title="dom-context-2d-strokeStyle">strokeStyle</code> must be + ignored. For <code + title="dom-context-2d-strokeVerticalText">strokeVerticalText()</code> + the reverse holds and <code + title="dom-context-2d-strokeStyle">strokeStyle</code> must be + applied and <code + title="dom-context-2d-fillStyle">fillStyle</code> must be + ignored.</p> + + <p>Text is painted without affecting the current path, and is + subject to <span title="shadows">shadow effects</span>, <span + title="dom-context-2d-globalAlpha">global alpha</span>, the <span + title="clipping region">clipping region</span>, and <span + title="dom-context-2d-globalCompositeOperation">global composition + operators</span>.</p> + + </li> + + </ol> + +v6DVT (also check for '- -' bits in the part above) --><p>The <dfn id="dom-context-2d-measuretext" title="dom-context-2d-measureText"><code>measureText()</code></dfn> + method takes one argument, <var title="">text</var>. When the method + is invoked, the user agent must replace all the <a href="#space-character" title="space + character">space characters</a> in <var title="">text</var> with + U+0020 SPACE characters, and then must form a hypothetical + infinitely wide CSS line box containing a single inline box + containing the text <var title="">text</var>, with all the + properties at their initial values except the 'white-space' property + of the inline element set to 'pre' and the 'font' property of the + inline element set to the current font of the context as given by + the <code title="dom-context-2d-font"><a href="#dom-context-2d-font">font</a></code> attribute, and + must then return a new <code><a href="#textmetrics">TextMetrics</a></code> object with its + <code title="dom-textmetrics-width"><a href="#dom-textmetrics-width">width</a></code> attribute set to + the width of that inline box, in CSS pixels. <a href="#refsCSS">[CSS]</a></p> + + <p>The <code><a href="#textmetrics">TextMetrics</a></code> interface is used for the objects + returned from <code title="dom-context-2d-measureText"><a href="#dom-context-2d-measuretext">measureText()</a></code>. It has one + attribute, <dfn id="dom-textmetrics-width" title="dom-textmetrics-width"><code>width</code></dfn>, which is set + by the <code title="dom-context-2d-measureText"><a href="#dom-context-2d-measuretext">measureText()</a></code> + method.</p> + + <p class="note">Glyphs rendered using <code title="dom-context-2d-fillText"><a href="#dom-context-2d-filltext">fillText()</a></code> and <code title="dom-context-2d-strokeText"><a href="#dom-context-2d-stroketext">strokeText()</a></code> can spill out + of the box given by the font size (the em square size) and the width + returned by <code title="dom-context-2d-measureText"><a href="#dom-context-2d-measuretext">measureText()</a></code> (the text + width). This version of the specification does not provide a way to + obtain the bounding box dimensions of the text. If the text is to be + rendered and removed, care needs to be taken to replace the entire + area of the canvas that the clipping region covers, not just the box + given by the em square height and measured text width.</p> + + <!-- v6: Drawing text along a given path --> + <!-- v6: Adding text to a path --> + <!-- see also: http://www.w3.org/TR/SVG11/text.html#TextpathLayoutRules --> + <!-- see also: http://developer.mozilla.org/en/docs/Drawing_text_using_a_canvas --> + + </div> + + <p class="note">A future version of the 2D context API may provide a + way to render fragments of documents, rendered using CSS, straight + to the canvas. This would be provided in preference to a dedicated + way of doing multiline layout.</p> + + + + <h6 id="images"><span class="secno">4.8.11.1.10 </span>Images</h6> + + <p>To draw images onto the canvas, the <dfn id="dom-context-2d-drawimage" title="dom-context-2d-drawImage"><code>drawImage</code></dfn> method + can be used.</p> + + <p>This method can be invoked with three different sets of arguments:</p> + + <ul class="brief"><li><code title="">drawImage(<var title="">image</var>, <var title="">dx</var>, <var title="">dy</var>)</code> + </li><li><code title="">drawImage(<var title="">image</var>, <var title="">dx</var>, <var title="">dy</var>, <var title="">dw</var>, <var title="">dh</var>)</code> + </li><li><code title="">drawImage(<var title="">image</var>, <var title="">sx</var>, <var title="">sy</var>, <var title="">sw</var>, <var title="">sh</var>, <var title="">dx</var>, <var title="">dy</var>, <var title="">dw</var>, <var title="">dh</var>)</code> + </li></ul><!-- v3: drawImage() of an ImageData object might make sense (when resizing as well as filtering) - ack Charles Pritchard --><p>Each of those three can take either an + <code><a href="#htmlimageelement">HTMLImageElement</a></code>, an <code><a href="#htmlcanvaselement">HTMLCanvasElement</a></code>, or + an <code><a href="#htmlvideoelement">HTMLVideoElement</a></code> for the <var title="">image</var> + argument.</p> + + <dl class="domintro"><dt><var title="">context</var> . <code title="dom-context-2d-drawImage"><a href="#dom-context-2d-drawimage">drawImage</a></code>(<var title="">image</var>, <var title="">dx</var>, <var title="">dy</var>)</dt> + <dt><var title="">context</var> . <code title="dom-context-2d-drawImage"><a href="#dom-context-2d-drawimage">drawImage</a></code>(<var title="">image</var>, <var title="">dx</var>, <var title="">dy</var>, <var title="">dw</var>, <var title="">dh</var>)</dt> + <dt><var title="">context</var> . <code title="dom-context-2d-drawImage"><a href="#dom-context-2d-drawimage">drawImage</a></code>(<var title="">image</var>, <var title="">sx</var>, <var title="">sy</var>, <var title="">sw</var>, <var title="">sh</var>, <var title="">dx</var>, <var title="">dy</var>, <var title="">dw</var>, <var title="">dh</var>)</dt> + + <dd> + + <p>Draws the given image onto the canvas. The arguments are + interpreted as follows:</p> + + <p><img alt="The sx and sy parameters give the x and y coordinates of the source rectangle; the sw and sh arguments give the width and height of the source rectangle; the dx and dy give the x and y coordinates of the destination rectangle; and the dw and dh arguments give the width and height of the destination rectangle." height="356" src="http://www.whatwg.org/specs/web-apps/current-work/http://images.whatwg.org/drawImage.png" width="356"/></p> + + <p>If the first argument isn't an <code><a href="#the-img-element">img</a></code>, + <code><a href="#the-canvas-element">canvas</a></code>, or <code><a href="#the-video-element">video</a></code> element, throws a + <code><a href="#type_mismatch_err">TYPE_MISMATCH_ERR</a></code> exception. If the image has no + image data, throws an <code><a href="#invalid_state_err">INVALID_STATE_ERR</a></code> exception. If + the one of the source rectangle dimensions is zero, throws an + <code><a href="#index_size_err">INDEX_SIZE_ERR</a></code> exception. If the image isn't yet + fully decoded, then nothing is drawn.</p> + + </dd> + + </dl><div class="impl"> + + <p>If not specified, the <var title="">dw</var> and <var title="">dh</var> arguments must default to the values of <var title="">sw</var> and <var title="">sh</var>, interpreted such that + one CSS pixel in the image is treated as one unit in the canvas + coordinate space. If the <var title="">sx</var>, <var title="">sy</var>, <var title="">sw</var>, and <var title="">sh</var> arguments are omitted, they must default to 0, 0, + the image's intrinsic width in image pixels, and the image's + intrinsic height in image pixels, respectively. If the image has no + intrinsic dimensions, the <i>concrete object size</i> must be used + instead, as determined using the CSS "<a href="http://dev.w3.org/csswg/css3-images/#default-sizing">Concrete + Object Size Resolution</a>" algorithm, with the <i>specified + size</i> having neither a definite width nor height, nor any + additional contraints, the object's intrinsic properties being those + of the <var title="">image</var> argument, and the <i>default object + size</i> being the size of the <code><a href="#the-canvas-element">canvas</a></code> element. <a href="#refsCSSIMAGES">[CSSIMAGES]</a></p> + + <p>The <var title="">image</var> argument is an instance of either + <code><a href="#htmlimageelement">HTMLImageElement</a></code>, <code><a href="#htmlcanvaselement">HTMLCanvasElement</a></code>, or + <code><a href="#htmlvideoelement">HTMLVideoElement</a></code>.</p> <!-- createPattern() has an + equivalent paragraph --> + + <p>If the <var title="">image</var> argument is an + <code><a href="#htmlimageelement">HTMLImageElement</a></code> object that is not <a href="#img-good" title="img-good">fully decodable</a>, or if the <var title="">image</var> argument is an <code><a href="#htmlvideoelement">HTMLVideoElement</a></code> + object whose <code title="dom-media-readyState"><a href="#dom-media-readystate">readyState</a></code> + attribute is either <code title="dom-media-HAVE_NOTHING"><a href="#dom-media-have_nothing">HAVE_NOTHING</a></code> or <code title="dom-media-HAVE_METADATA"><a href="#dom-media-have_metadata">HAVE_METADATA</a></code>, then the + implementation must return without drawing anything.</p> <!-- + createPattern() has an equivalent paragraph --> + + <p>If the <var title="">image</var> argument is an + <code><a href="#htmlcanvaselement">HTMLCanvasElement</a></code> object with either a horizontal + dimension or a vertical dimension equal to zero, then the + implementation must raise an <code><a href="#invalid_state_err">INVALID_STATE_ERR</a></code> + exception.</p> + <!-- createPattern() has an equivalent paragraph --> + + <p>The source rectangle is the rectangle whose corners are the four + points (<var title="">sx</var>, <var title="">sy</var>), (<span title=""><var title="">sx</var>+<var title="">sw</var></span>, <var title="">sy</var>), (<span title=""><var title="">sx</var>+<var title="">sw</var></span>, <span title=""><var title="">sy</var>+<var title="">sh</var></span>), (<var title="">sx</var>, <span title=""><var title="">sy</var>+<var title="">sh</var></span>).</p> + + <p>If one of the <var title="">sw</var> or <var title="">sh</var> + arguments is zero, the implementation must raise an + <code><a href="#index_size_err">INDEX_SIZE_ERR</a></code> exception.</p> + + <p>The destination rectangle is the rectangle whose corners are the + four points (<var title="">dx</var>, <var title="">dy</var>), + (<span title=""><var title="">dx</var>+<var title="">dw</var></span>, <var title="">dy</var>), (<span title=""><var title="">dx</var>+<var title="">dw</var></span>, <span title=""><var title="">dy</var>+<var title="">dh</var></span>), (<var title="">dx</var>, <span title=""><var title="">dy</var>+<var title="">dh</var></span>).</p> + + <p>When <code title="dom-context-2d-drawImage"><a href="#dom-context-2d-drawimage">drawImage()</a></code> is + invoked, the region of the image specified by the source rectangle + must be painted on the region of the canvas specified by the + destination rectangle, after applying the <a href="#transformations" title="dom-context-2d-transformation">current transformation + matrix</a> to the points of the destination rectangle.</p> + + <p>The original image data of the source image must be used, not the + image as it is rendered (e.g. <code title="attr-dim-width"><a href="#attr-dim-width">width</a></code> and <code title="attr-dim-height"><a href="#attr-dim-height">height</a></code> attributes on the source + element have no effect). The image data must be processed in the + original direction, even if the dimensions given are negative. <!-- + remove that last sentence if it causes confusion. Someone once + suggested that 5,5,-2,-2 was different than 3,3,2,2; this is trying + to clarify that this is no the case. --></p> + + <p class="note">This specification does not define the algorithm to + use when scaling the image, if necessary.</p> + + <p class="note">When a canvas is drawn onto itself, the <a href="#drawing-model">drawing + model</a> requires the source to be copied before the image is drawn + back onto the canvas, so it is possible to copy parts of a canvas + onto overlapping parts of itself.</p> + + <p>If the original image data is a bitmap image, the value painted + at a point in the destination rectangle is computed by filtering the + original image data. The user agent may use any filtering algorithm + (for example bilinear interpolation or nearest-neighbor). When the + filtering algorithm requires a pixel value from outside the original + image data, it must instead use the value from the nearest edge + pixel. (That is, the filter uses 'clamp-to-edge' behavior.)</p> + <!-- see CORE-32111 and: + http://krijnhoetmer.nl/irc-logs/whatwg/20100818#l-737 + http://www.w3.org/Bugs/Public/show_bug.cgi?id=10799#c11 + --> + <!-- createPattern() has a similar paragraph with different rules --> + + <p>When the <code title="dom-context-2d-drawImage"><a href="#dom-context-2d-drawimage">drawImage()</a></code> method + is passed an animated image as its <var title="">image</var> + argument, the user agent must use the poster frame of the animation, + or, if there is no poster frame, the first frame of the + animation.</p> + <!-- createPattern() has an equivalent paragraph --> + + <p>When the <var title="">image</var> argument is an + <code><a href="#htmlvideoelement">HTMLVideoElement</a></code>, then the frame at the <a href="#current-playback-position">current + playback position</a> must be used as the source image, and the + source image's dimensions must be the <a href="#concept-video-intrinsic-width" title="concept-video-intrinsic-width">intrinsic width</a> and + <a href="#concept-video-intrinsic-height" title="concept-video-intrinsic-height">intrinsic height</a> + of the <a href="#media-resource">media resource</a> (i.e. after any aspect-ratio + correction has been applied).</p> + <!-- createPattern() has an equivalent paragraph --> + + <p>Images are painted without affecting the current path, and are + subject to <a href="#shadows" title="shadows">shadow effects</a>, <a href="#dom-context-2d-globalalpha" title="dom-context-2d-globalAlpha">global alpha</a>, the <a href="#clipping-region" title="clipping region">clipping region</a>, and <a href="#dom-context-2d-globalcompositeoperation" title="dom-context-2d-globalCompositeOperation">global composition + operators</a>.</p> + + </div> + + + + <h6 id="pixel-manipulation"><span class="secno">4.8.11.1.11 </span><dfn>Pixel manipulation</dfn></h6> + + <dl class="domintro"><dt><var title="">imagedata</var> = <var title="">context</var> . <code title="dom-context-2d-createImageData"><a href="#dom-context-2d-createimagedata">createImageData</a></code>(<var title="">sw</var>, <var title="">sh</var>)</dt> + + <dd> + + <p>Returns an <code><a href="#imagedata">ImageData</a></code> object with the given + dimensions in CSS pixels (which might map to a different number of + actual device pixels exposed by the object itself). All the pixels + in the returned object are transparent black.</p> + + </dd> + + <dt><var title="">imagedata</var> = <var title="">context</var> . <code title="dom-context-2d-createImageData"><a href="#dom-context-2d-createimagedata">createImageData</a></code>(<var title="">imagedata</var>)</dt> + + <dd> + + <p>Returns an <code><a href="#imagedata">ImageData</a></code> object with the same + dimensions as the argument. All the pixels in the returned object + are transparent black.</p> + + </dd> + + <dt><var title="">imagedata</var> = <var title="">context</var> . <code title="dom-context-2d-getImageData"><a href="#dom-context-2d-getimagedata">getImageData</a></code>(<var title="">sx</var>, <var title="">sy</var>, <var title="">sw</var>, <var title="">sh</var>)</dt> + + <dd> + + <p>Returns an <code><a href="#imagedata">ImageData</a></code> object containing the image + data for the given rectangle of the canvas.</p> + + <p>Throws a <code><a href="#not_supported_err">NOT_SUPPORTED_ERR</a></code> exception if any of the + arguments are not finite. Throws an <code><a href="#index_size_err">INDEX_SIZE_ERR</a></code> + exception if the either of the width or height arguments are + zero.</p> + + </dd> + + <dt><var title="">imagedata</var> . <code title="dom-imagedata-width"><a href="#dom-imagedata-width">width</a></code></dt> + <dt><var title="">imagedata</var> . <code title="dom-imagedata-height"><a href="#dom-imagedata-height">height</a></code></dt> + + <dd> + + <p>Returns the actual dimensions of the data in the <code><a href="#imagedata">ImageData</a></code> object, in device pixels.</p> + + </dd> + + <dt><var title="">imagedata</var> . <code title="dom-imagedata-data"><a href="#dom-imagedata-data">data</a></code></dt> + + <dd> + + <p>Returns the one-dimensional array containing the data in RGBA order, as integers in the range 0 to 255.</p> + + </dd> + + <dt><var title="">context</var> . <code title="dom-context-2d-putImageData"><a href="#dom-context-2d-putimagedata">putImageData</a></code>(<var title="">imagedata</var>, <var title="">dx</var>, <var title="">dy</var> [, <var title="">dirtyX</var>, <var title="">dirtyY</var>, <var title="">dirtyWidth</var>, <var title="">dirtyHeight</var> ])</dt> + + <dd> + + <p>Paints the data from the given <code><a href="#imagedata">ImageData</a></code> object + onto the canvas. If a dirty rectangle is provided, only the pixels + from that rectangle are painted.</p> + + <p>The <code title="dom-context-2d-globalAlpha"><a href="#dom-context-2d-globalalpha">globalAlpha</a></code> + and <code title="dom-context-2d-globalCompositeOperation"><a href="#dom-context-2d-globalcompositeoperation">globalCompositeOperation</a></code> + attributes, as well as the shadow attributes, are ignored for the + purposes of this method call; pixels in the canvas are replaced + wholesale, with no composition, alpha blending, no shadows, + etc.</p> + + <p>If the first argument is null, throws a + <code><a href="#type_mismatch_err">TYPE_MISMATCH_ERR</a></code> exception. Throws a + <code><a href="#not_supported_err">NOT_SUPPORTED_ERR</a></code> exception if any of the other + arguments are not finite.</p> + + </dd> + + </dl><div class="impl"> + + <p>The <dfn id="dom-context-2d-createimagedata" title="dom-context-2d-createImageData"><code>createImageData()</code></dfn> + method is used to instantiate new blank <code><a href="#imagedata">ImageData</a></code> + objects. When the method is invoked with two arguments <var title="">sw</var> and <var title="">sh</var>, it must return an + <code><a href="#imagedata">ImageData</a></code> object representing a rectangle with a width + in CSS pixels equal to the absolute magnitude of <var title="">sw</var> and a height in CSS pixels equal to the absolute + magnitude of <var title="">sh</var>. When invoked with a single <var title="">imagedata</var> argument, it must return an + <code><a href="#imagedata">ImageData</a></code> object representing a rectangle with the same + dimensions as the <code><a href="#imagedata">ImageData</a></code> object passed as the + argument. The <code><a href="#imagedata">ImageData</a></code> object returned must be filled + with transparent black.</p> + + <p>The <dfn id="dom-context-2d-getimagedata" title="dom-context-2d-getImageData"><code>getImageData(<var title="">sx</var>, <var title="">sy</var>, <var title="">sw</var>, + <var title="">sh</var>)</code></dfn> method must return an + <code><a href="#imagedata">ImageData</a></code> object representing the underlying pixel data + for the area of the canvas denoted by the rectangle whose corners are + the four points (<var title="">sx</var>, <var title="">sy</var>), + (<span title=""><var title="">sx</var>+<var title="">sw</var></span>, <var title="">sy</var>), (<span title=""><var title="">sx</var>+<var title="">sw</var></span>, <span title=""><var title="">sy</var>+<var title="">sh</var></span>), (<var title="">sx</var>, <span title=""><var title="">sy</var>+<var title="">sh</var></span>), in canvas + coordinate space units. Pixels outside the canvas must be returned + as transparent black. Pixels must be returned as non-premultiplied + alpha values.</p> + + <p>If any of the arguments to <code title="dom-context-2d-createImageData"><a href="#dom-context-2d-createimagedata">createImageData()</a></code> or + <code title="dom-context-2d-getImageData"><a href="#dom-context-2d-getimagedata">getImageData()</a></code> + are infinite or NaN, the method must instead raise a + <code><a href="#not_supported_err">NOT_SUPPORTED_ERR</a></code> exception. If either the <var title="">sw</var> or <var title="">sh</var> arguments are zero, + the method must instead raise an <code><a href="#index_size_err">INDEX_SIZE_ERR</a></code> + exception.</p> + + <p><code><a href="#imagedata">ImageData</a></code> objects must be initialized so that their + <dfn id="dom-imagedata-width" title="dom-imagedata-width"><code>width</code></dfn> attribute + is set to <var title="">w</var>, the number of physical device + pixels per row in the image data, their <dfn id="dom-imagedata-height" title="dom-imagedata-height"><code>height</code></dfn> attribute is + set to <var title="">h</var>, the number of rows in the image data, + and their <dfn id="dom-imagedata-data" title="dom-imagedata-data"><code>data</code></dfn> + attribute is initialized to a <code><a href="#canvaspixelarray">CanvasPixelArray</a></code> object + holding the image data. At least one pixel's worth of image data + must be returned.</p> + + <p>The <code><a href="#canvaspixelarray">CanvasPixelArray</a></code> object provides ordered, + indexed access to the color components of each pixel of the image + data. The data must be represented in left-to-right order, row by + row top to bottom, starting with the top left, with each pixel's + red, green, blue, and alpha components being given in that order for + each pixel. Each component of each device pixel represented in this + array must be in the range 0..255, representing the 8 bit value for + that component. The components must be assigned consecutive indices + starting with 0 for the top left pixel's red component.</p> + + <p>The <code><a href="#canvaspixelarray">CanvasPixelArray</a></code> object thus represents <var title="">h</var>×<var title="">w</var>×4 integers. The + <dfn id="dom-canvaspixelarray-length" title="dom-canvaspixelarray-length"><code>length</code></dfn> + attribute of a <code><a href="#canvaspixelarray">CanvasPixelArray</a></code> object must return this + number.</p> + + <p>The object's <a href="#supported-property-indices">supported property indices</a> are the + numbers in the range 0 .. <span title=""><var title="">h</var>×<var title="">w</var>×4-1</span>.</p> + + <p>To <dfn id="dom-canvaspixelarray-get" title="dom-CanvasPixelArray-get">determine the value of + an indexed property</dfn> <var title="">index</var>, the user agent + must return the value of the <var title="">index</var>th component + in the array.</p> + + <p>To <dfn id="dom-canvaspixelarray-set" title="dom-CanvasPixelArray-set">set the value of an + existing indexed property</dfn> <var title="">index</var> to value + <var title="">value</var>, the value of the <var title="">index</var>th component in the array must be set to <var title="">value</var>.</p> + + <p class="note">The width and height (<var title="">w</var> and <var title="">h</var>) might be different from the <var title="">sw</var> + and <var title="">sh</var> arguments to the above methods, e.g. if + the canvas is backed by a high-resolution bitmap, or if the <var title="">sw</var> and <var title="">sh</var> arguments are + negative.</p> + + <p>The <dfn id="dom-context-2d-putimagedata" title="dom-context-2d-putImageData"><code>putImageData(<var title="">imagedata</var>, <var title="">dx</var>, <var title="">dy</var>, <var title="">dirtyX</var>, <var title="">dirtyY</var>, <var title="">dirtyWidth</var>, <var title="">dirtyHeight</var>)</code></dfn> method writes data from + <code><a href="#imagedata">ImageData</a></code> structures back to the canvas.</p> + + <p>If any of the arguments to the method are infinite or NaN, the + method must raise a <code><a href="#not_supported_err">NOT_SUPPORTED_ERR</a></code> exception.</p> + + <p>When the last four arguments are omitted, they must be assumed to + have the values 0, 0, the <code title="dom-imagedata-width"><a href="#dom-imagedata-width">width</a></code> member of the <var title="">imagedata</var> structure, and the <code title="dom-imagedata-height"><a href="#dom-imagedata-height">height</a></code> member of the <var title="">imagedata</var> structure, respectively.</p> + + <p>When invoked with arguments that do not, per the last few + paragraphs, cause an exception to be raised, the <code title="dom-context-2d-putImageData"><a href="#dom-context-2d-putimagedata">putImageData()</a></code> method + must act as follows:</p> + + <ol><li> + + <p>Let <var title="">dx<sub>device</sub></var> be the x-coordinate + of the device pixel in the underlying pixel data of the canvas + corresponding to the <var title="">dx</var> coordinate in the + canvas coordinate space.</p> + + <p>Let <var title="">dy<sub>device</sub></var> be the y-coordinate + of the device pixel in the underlying pixel data of the canvas + corresponding to the <var title="">dy</var> coordinate in the + canvas coordinate space.</p> + + </li> + + <li> + + <p>If <var title="">dirtyWidth</var> is negative, let <var title="">dirtyX</var> be <span title=""><var title="">dirtyX</var>+<var title="">dirtyWidth</var></span>, and let <var title="">dirtyWidth</var> be equal to the absolute magnitude of + <var title="">dirtyWidth</var>.</p> + + <p>If <var title="">dirtyHeight</var> is negative, let <var title="">dirtyY</var> be <span title=""><var title="">dirtyY</var>+<var title="">dirtyHeight</var></span>, and let <var title="">dirtyHeight</var> be equal to the absolute magnitude of + <var title="">dirtyHeight</var>.</p> + + </li> + + <li> + + <p>If <var title="">dirtyX</var> is negative, let <var title="">dirtyWidth</var> be <span title=""><var title="">dirtyWidth</var>+<var title="">dirtyX</var></span>, and + let <var title="">dirtyX</var> be zero.</p> + + <p>If <var title="">dirtyY</var> is negative, let <var title="">dirtyHeight</var> be <span title=""><var title="">dirtyHeight</var>+<var title="">dirtyY</var></span>, and + let <var title="">dirtyY</var> be zero.</p> + + </li> + + <li> + + <p>If <span title=""><var title="">dirtyX</var>+<var title="">dirtyWidth</var></span> is greater than the <code title="dom-imagedata-width"><a href="#dom-imagedata-width">width</a></code> attribute of the <var title="">imagedata</var> argument, let <var title="">dirtyWidth</var> be the value of that <code title="dom-imagedata-width"><a href="#dom-imagedata-width">width</a></code> attribute, minus the + value of <var title="">dirtyX</var>.</p> + + <p>If <span title=""><var title="">dirtyY</var>+<var title="">dirtyHeight</var></span> is greater than the <code title="dom-imagedata-height"><a href="#dom-imagedata-height">height</a></code> attribute of the <var title="">imagedata</var> argument, let <var title="">dirtyHeight</var> be the value of that <code title="dom-imagedata-height"><a href="#dom-imagedata-height">height</a></code> attribute, minus the + value of <var title="">dirtyY</var>.</p> + + </li> + + <li> + + <p>If, after those changes, either <var title="">dirtyWidth</var> + or <var title="">dirtyHeight</var> is negative or zero, stop these + steps without affecting the canvas.</p> + + </li> + + <li><p>Otherwise, for all integer values of <var title="">x</var> + and <var title="">y</var> where <span title=""><var title="">dirtyX</var> ≤ <var title="">x</var> < <span title=""><var title="">dirtyX</var>+<var title="">dirtyWidth</var></span></span> + and <span title=""><var title="">dirtyY</var> ≤ <var title="">y</var> < <span title=""><var title="">dirtyY</var>+<var title="">dirtyHeight</var></span></span>, copy the four channels of + the pixel with coordinate (<var title="">x</var>, <var title="">y</var>) in the <var title="">imagedata</var> data + structure to the pixel with coordinate (<span title=""><var title="">dx<sub>device</sub></var>+<var title="">x</var></span>, + <span title=""><var title="">dy<sub>device</sub></var>+<var title="">y</var></span>) in the underlying pixel data of the + canvas.</p></li> + + </ol><p>The handling of pixel rounding when the specified coordinates do + not exactly map to the device coordinate space is not defined by + this specification, except that the following must result in no + visible changes to the rendering:</p> + + <pre>context.putImageData(context.getImageData(x, y, w, h), p, q);</pre> + + <p>...for any value of <var title="">x</var>, <var title="">y</var>, + <var title="">w</var>, and <var title="">h</var> and where <var title="">p</var> is the smaller of <var title="">x</var> and the sum + of <var title="">x</var> and <var title="">w</var>, and <var title="">q</var> is the smaller of <var title="">y</var> and the sum + of <var title="">y</var> and <var title="">h</var>; and except that + the following two calls:</p> + + <pre>context.createImageData(w, h); +context.getImageData(0, 0, w, h);</pre> + + <p>...must return <code><a href="#imagedata">ImageData</a></code> objects with the same + dimensions, for any value of <var title="">w</var> and <var title="">h</var>. In other words, while user agents may round the + arguments of these methods so that they map to device pixel + boundaries, any rounding performed must be performed consistently + for all of the <code title="dom-context-2d-getImageData"><a href="#dom-context-2d-getimagedata">createImageData()</a></code>, <code title="dom-context-2d-getImageData"><a href="#dom-context-2d-getimagedata">getImageData()</a></code> and <code title="dom-context-2d-putImageData"><a href="#dom-context-2d-putimagedata">putImageData()</a></code> + operations.</p> + + <p class="note">Due to the lossy nature of converting to and from + premultiplied alpha color values, pixels that have just been set + using <code title="dom-context-2d-putImageData"><a href="#dom-context-2d-putimagedata">putImageData()</a></code> might be + returned to an equivalent <code title="dom-context-2d-getImageData"><a href="#dom-context-2d-getimagedata">getImageData()</a></code> as + different values.</p> + + <p>The current path, <a href="#transformations" title="dom-context-2d-transformation">transformation matrix</a>, + <a href="#shadows" title="shadows">shadow attributes</a>, <a href="#dom-context-2d-globalalpha" title="dom-context-2d-globalAlpha">global alpha</a>, the <a href="#clipping-region" title="clipping region">clipping region</a>, and <a href="#dom-context-2d-globalcompositeoperation" title="dom-context-2d-globalCompositeOperation">global composition + operator</a> must not affect the <code title="dom-context-2d-getImageData"><a href="#dom-context-2d-getimagedata">getImageData()</a></code> and <code title="dom-context-2d-putImageData"><a href="#dom-context-2d-putimagedata">putImageData()</a></code> + methods.</p> + + </div> + + <div class="example"> + + <p>The data returned by <code title="dom-context-2d-getImageData"><a href="#dom-context-2d-getimagedata">getImageData()</a></code> is at the + resolution of the canvas backing store, which is likely to not be + one device pixel to each CSS pixel if the display used is a high + resolution display.</p> + + <p>In the following example, the script generates an + <code><a href="#imagedata">ImageData</a></code> object so that it can draw onto it.</p> + + <pre>// canvas is a reference to a <canvas> element +var context = canvas.getContext('2d'); + +// create a blank slate +var data = context.createImageData(canvas.width, canvas.height); + +// create some plasma +FillPlasma(data, 'green'); // green plasma + +// add a cloud to the plasma +AddCloud(data, data.width/2, data.height/2); // put a cloud in the middle + +// paint the plasma+cloud on the canvas +context.putImageData(data, 0, 0); + +// support methods +function FillPlasma(data, color) { ... } +function AddCloud(data, x, y) { ... }</pre> + + </div> + + <div class="example"> + + <p>Here is an example of using <code title="dom-context-2d-getImageData"><a href="#dom-context-2d-getimagedata">getImageData()</a></code> and <code title="dom-context-2d-putImageData"><a href="#dom-context-2d-putimagedata">putImageData()</a></code> to + implement an edge detection filter.</p> + + <pre><!DOCTYPE HTML> +<html> + <head> + <title>Edge detection demo</title> + <script> + var image = new Image(); + function init() { + image.onload = demo; + image.src = "image.jpeg"; + } + function demo() { + var canvas = document.getElementsByTagName('canvas')[0]; + var context = canvas.getContext('2d'); + + // draw the image onto the canvas + context.drawImage(image, 0, 0); + + // get the image data to manipulate + var input = context.getImageData(0, 0, canvas.width, canvas.height); + + // get an empty slate to put the data into + var output = context.createImageData(canvas.width, canvas.height); + + // alias some variables for convenience + // notice that we are using input.width and input.height here + // as they might not be the same as canvas.width and canvas.height + // (in particular, they might be different on high-res displays) + var w = input.width, h = input.height; + var inputData = input.data; + var outputData = output.data; + + // edge detection + for (var y = 1; y < h-1; y += 1) { + for (var x = 1; x < w-1; x += 1) { + for (var c = 0; c < 3; c += 1) { + var i = (y*w + x)*4 + c; + outputData[i] = 127 + -inputData[i - w*4 - 4] - inputData[i - w*4] - inputData[i - w*4 + 4] + + -inputData[i - 4] + 8*inputData[i] - inputData[i + 4] + + -inputData[i + w*4 - 4] - inputData[i + w*4] - inputData[i + w*4 + 4]; + } + outputData[(y*w + x)*4 + 3] = 255; // alpha + } + } + + // put the image data back after manipulation + context.putImageData(output, 0, 0); + } + </script> + </head> + <body onload="init()"> + <canvas></canvas> + </body> +</html></pre> + + </div> + + + <div class="impl"> + + <h6 id="drawing-model"><span class="secno">4.8.11.1.12 </span><dfn>Drawing model</dfn></h6> + + <p>When a shape or image is painted, user agents must follow these + steps, in the order given (or act as if they do):</p> + + <ol><li><p>Render the shape or image onto an infinite transparent black + bitmap, creating image <var title="">A</var>, as described in the + previous sections. For shapes, the current fill, stroke, and line + styles must be honored, and the stroke must itself also be + subjected to the current transformation matrix.</p></li> + + <li><p><a href="#when-shadows-are-drawn">When shadows are drawn</a>, render the shadow from + image <var title="">A</var>, using the current shadow styles, + creating image <var title="">B</var>.</p></li> + + <li><p><a href="#when-shadows-are-drawn">When shadows are drawn</a>, multiply the alpha + component of every pixel in <var title="">B</var> by <code title="dom-context-2d-globalAlpha"><a href="#dom-context-2d-globalalpha">globalAlpha</a></code>.</p></li> + + <li><p><a href="#when-shadows-are-drawn">When shadows are drawn</a>, composite <var title="">B</var> within the <a href="#clipping-region">clipping region</a> over the + current canvas bitmap using the current composition + operator.</p></li> + + <li><p>Multiply the alpha component of every pixel in <var title="">A</var> by <code title="dom-context-2d-globalAlpha"><a href="#dom-context-2d-globalalpha">globalAlpha</a></code>.</p></li> + + <li><p>Composite <var title="">A</var> within the <a href="#clipping-region">clipping + region</a> over the current canvas bitmap using the current + composition operator.</p></li> + + </ol></div> + + + <h6 id="best-practices"><span class="secno">4.8.11.1.13 </span>Best practices</h6> + + <p><i>This section is non-normative.</i></p> + + <p>When a canvas is interactive, authors should include focusable + elements in the element's fallback content corresponding to each + focusable part of the canvas, as in the <a href="#drawCustomFocusRingExample">example above</a>.</p> + + <p>To indicate which focusable part of the canvas is currently + focused, authors should use the <code title="dom-context-2d-drawSystemFocusRing"><a href="#dom-context-2d-drawsystemfocusring">drawSystemFocusRing()</a></code> + method, passing it the element for which a ring is being drawn. This + method only draws the focus ring if the element is focused, so that + it can simply be called whenever drawing the element, without + checking whether the element is focused or not first.</p> + + <p>Authors should avoid implementing text editing controls using the + <code><a href="#the-canvas-element">canvas</a></code> element. Doing so has a large number of + disadvantages:</p> + + <ul><li>Mouse placement of the caret has to be reimplemented.</li> + + <li>Keyboard movement of the caret has to be reimplemented (possibly across lines, for multiline text input).</li> + + <li>Scrolling of the text field has to be implemented (horizontally for long lines, vertically for multiline input).</li> + + <li>Native features such as copy-and-paste have to be reimplemented.</li> + + <li>Native features such as spell-checking have to be reimplemented.</li> + + <li>Native features such as drag-and-drop have to be reimplemented.</li> + + <li>Native features such as page-wide text search have to be reimplemented.</li> + + <li>Native features specific to the user, for example custom text + services, have to be reimplemented. This is close to impossible + since each user might have different services installed, and there + is an unbounded set of possible such services.</li> + + <li>Bidirectional text editing has to be reimplemented.</li> + + <li>For multiline text editing, line wrapping has to be implemented for all relevant languages.</li> + + <li>Text selection has to be reimplemented.</li> + + <li>Dragging of bidirectional text selections has to be reimplemented.</li> + + <li>Platform-native keyboard shortcuts have to be reimplemented.</li> + + <li>Platform-native input method editors (IMEs) have to be reimplemented.</li> + + <li>Undo and redo functionality has to be reimplemented.</li> + + <li>Accessibility features such as magnification following the + caret or selection have to be reimplemented.</li> + + </ul><p>This is a huge amount of work, and authors are most strongly + encouraged to avoid doing any of it by instead using the + <code><a href="#the-input-element">input</a></code> element, the <code><a href="#the-textarea-element">textarea</a></code> element, or + the <code title="attr-contenteditable"><a href="#attr-contenteditable">contenteditable</a></code> + attribute.</p> + + + <h6 id="examples"><span class="secno">4.8.11.1.14 </span>Examples</h6> + + <p><i>This section is non-normative.</i></p> + + <div class="example"> + + <p>Here is an example of a script that uses canvas to draw <a href="data:text/html;charset=utf-8;base64,PCFET0NUWVBFIEhUTUw%2BDQo8aHRtbCBsYW5nPSJlbiI%2BDQogPGhlYWQ%2BDQogIDx0aXRsZT5QcmV0dHkgR2xvd2luZyBMaW5lczwvdGl0bGU%2BDQogPC9oZWFkPg0KIDxib2R5Pg0KPGNhbnZhcyB3aWR0aD0iODAwIiBoZWlnaHQ9IjQ1MCI%2BPC9jYW52YXM%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%2BDQogPC9ib2R5Pg0KPC9odG1sPg0K">pretty glowing lines</a>.</p> + + <pre><canvas width="800" height="450"></canvas> +<script> + + var context = document.getElementsByTagName('canvas')[0].getContext('2d'); + + var lastX = context.canvas.width * Math.random(); + var lastY = context.canvas.height * Math.random(); + var hue = 0; + function line() { + context.save(); + context.translate(context.canvas.width/2, context.canvas.height/2); + context.scale(0.9, 0.9); + context.translate(-context.canvas.width/2, -context.canvas.height/2); + context.beginPath(); + context.lineWidth = 5 + Math.random() * 10; + context.moveTo(lastX, lastY); + lastX = context.canvas.width * Math.random(); + lastY = context.canvas.height * Math.random(); + context.bezierCurveTo(context.canvas.width * Math.random(), + context.canvas.height * Math.random(), + context.canvas.width * Math.random(), + context.canvas.height * Math.random(), + lastX, lastY); + + hue = hue + 10 * Math.random(); + context.strokeStyle = 'hsl(' + hue + ', 50%, 50%)'; + context.shadowColor = 'white'; + context.shadowBlur = 10; + context.stroke(); + context.restore(); + } + setInterval(line, 50); + + function blank() { + context.fillStyle = 'rgba(0,0,0,0.1)'; + context.fillRect(0, 0, context.canvas.width, context.canvas.height); + } + setInterval(blank, 40); + +</script></pre> + + </div> + + + + </div><!--data-component--> + + <!--2DCONTEXT--> + + <div class="impl"> + + <h5 id="color-spaces-and-color-correction"><span class="secno">4.8.11.2 </span>Color spaces and color correction</h5> + + <p>The <code><a href="#the-canvas-element">canvas</a></code> APIs must perform color correction at + only two points: when rendering images with their own gamma + correction and color space information onto the canvas, to convert + the image to the color space used by the canvas (e.g. using the 2D + Context's <code title="dom-context-2d-drawImage"><a href="#dom-context-2d-drawimage">drawImage()</a></code> + method with an <code><a href="#htmlimageelement">HTMLImageElement</a></code> object), and when + rendering the actual canvas bitmap to the output device.</p> + + <p class="note">Thus, in the 2D context, colors used to draw shapes + onto the canvas will exactly match colors obtained through the <code title="dom-context-2d-getImageData"><a href="#dom-context-2d-getimagedata">getImageData()</a></code> + method.</p> + + <p>The <code title="dom-canvas-toDataURL"><a href="#dom-canvas-todataurl">toDataURL()</a></code> method + must not include color space information in the resource + returned. Where the output format allows it, the color of pixels in + resources created by <code title="dom-canvas-toDataURL"><a href="#dom-canvas-todataurl">toDataURL()</a></code> must match those + returned by the <code title="dom-context-2d-getImageData"><a href="#dom-context-2d-getimagedata">getImageData()</a></code> + method.</p> + + <p>In user agents that support CSS, the color space used by a + <code><a href="#the-canvas-element">canvas</a></code> element must match the color space used for + processing any colors for that element in CSS.</p> + + <p>The gamma correction and color space information of images must + be handled in such a way that an image rendered directly using an + <code><a href="#the-img-element">img</a></code> element would use the same colors as one painted on + a <code><a href="#the-canvas-element">canvas</a></code> element that is then itself + rendered. Furthermore, the rendering of images that have no color + correction information (such as those returned by the <code title="dom-canvas-toDataURL"><a href="#dom-canvas-todataurl">toDataURL()</a></code> method) must be + rendered with no color correction.</p> + + <p class="note">Thus, in the 2D context, calling the <code title="dom-context-2d-drawImage"><a href="#dom-context-2d-drawimage">drawImage()</a></code> method to render + the output of the <code title="dom-canvas-toDataURL"><a href="#dom-canvas-todataurl">toDataURL()</a></code> method to the + canvas, given the appropriate dimensions, has no visible effect.</p> + + </div> + + + <div class="impl"> + + <h5 id="security-with-canvas-elements"><span class="secno">4.8.11.3 </span>Security with <code><a href="#the-canvas-element">canvas</a></code> elements</h5> + + <p><strong>Information leakage</strong> can occur if scripts from + one <a href="#origin">origin</a> can access information (e.g. read pixels) + from images from another origin (one that isn't the <a href="#same-origin" title="same origin">same</a>).</p> + + <p>To mitigate this, <code><a href="#the-canvas-element">canvas</a></code> elements are defined to + have a flag indicating whether they are <i>origin-clean</i>. All + <code><a href="#the-canvas-element">canvas</a></code> elements must start with their + <i>origin-clean</i> set to true. The flag must be set to false if + any of the following actions occur:</p> + + <ul><li><p>The element's 2D context's <code title="dom-context-2d-drawImage"><a href="#dom-context-2d-drawimage">drawImage()</a></code> method is + called with an <code><a href="#htmlimageelement">HTMLImageElement</a></code> or an + <code><a href="#htmlvideoelement">HTMLVideoElement</a></code> whose <a href="#origin">origin</a> is not the + <a href="#same-origin" title="same origin">same</a> as that of the + <code><a href="#document">Document</a></code> object that owns the <code><a href="#the-canvas-element">canvas</a></code> + element.</p></li> + + <li><p>The element's 2D context's <code title="dom-context-2d-drawImage"><a href="#dom-context-2d-drawimage">drawImage()</a></code> method is + called with an <code><a href="#htmlcanvaselement">HTMLCanvasElement</a></code> whose + <i>origin-clean</i> flag is false.</p></li> + + <li><p>The element's 2D context's <code title="dom-context-2d-fillStyle"><a href="#dom-context-2d-fillstyle">fillStyle</a></code> attribute is set + to a <code><a href="#canvaspattern">CanvasPattern</a></code> object that was created from an + <code><a href="#htmlimageelement">HTMLImageElement</a></code> or an <code><a href="#htmlvideoelement">HTMLVideoElement</a></code> + whose <a href="#origin">origin</a> was not the <a href="#same-origin" title="same + origin">same</a> as that of the <code><a href="#document">Document</a></code> object + that owns the <code><a href="#the-canvas-element">canvas</a></code> element when the pattern was + created.</p></li> + + <li><p>The element's 2D context's <code title="dom-context-2d-fillStyle"><a href="#dom-context-2d-fillstyle">fillStyle</a></code> attribute is set + to a <code><a href="#canvaspattern">CanvasPattern</a></code> object that was created from an + <code><a href="#htmlcanvaselement">HTMLCanvasElement</a></code> whose <i>origin-clean</i> flag was + false when the pattern was created.</p></li> + + <li><p>The element's 2D context's <code title="dom-context-2d-strokeStyle"><a href="#dom-context-2d-strokestyle">strokeStyle</a></code> attribute is + set to a <code><a href="#canvaspattern">CanvasPattern</a></code> object that was created from an + <code><a href="#htmlimageelement">HTMLImageElement</a></code> or an <code><a href="#htmlvideoelement">HTMLVideoElement</a></code> + whose <a href="#origin">origin</a> was not the <a href="#same-origin" title="same + origin">same</a> as that of the <code><a href="#document">Document</a></code> object + that owns the <code><a href="#the-canvas-element">canvas</a></code> element when the pattern was + created.</p></li> + + <li><p>The element's 2D context's <code title="dom-context-2d-strokeStyle"><a href="#dom-context-2d-strokestyle">strokeStyle</a></code> attribute is + set to a <code><a href="#canvaspattern">CanvasPattern</a></code> object that was created from an + <code><a href="#htmlcanvaselement">HTMLCanvasElement</a></code> whose <i>origin-clean</i> flag was + false when the pattern was created.</p></li> + + <li><p>The element's 2D context's <code title="dom-context-2d-fillText"><a href="#dom-context-2d-filltext">fillText()</a></code> or <code title="dom-context-2d-fillText"><a href="#dom-context-2d-filltext">strokeText()</a></code> methods are + invoked and consider using a font that has an <a href="#origin">origin</a> + that is not the <a href="#same-origin" title="same origin">same</a> as that of + the <code><a href="#document">Document</a></code> object that owns the <code><a href="#the-canvas-element">canvas</a></code> + element. (The font doesn't even have to be used; all that matters + is whether the font was considered for any of the glyphs + drawn.)</p></li> <!-- because fonts could consider sensitive + material, I guess; and because that sensitivity could extend to + whether or not a particular glyph is in the font in the first + place. --> + + </ul><p>Whenever the <code title="dom-canvas-toDataURL"><a href="#dom-canvas-todataurl">toDataURL()</a></code> method of a + <code><a href="#the-canvas-element">canvas</a></code> element whose <i>origin-clean</i> flag is set to + false is called, the method must raise a <code><a href="#security_err">SECURITY_ERR</a></code> + exception.</p> + + <p>Whenever the <code title="dom-context-2d-getImageData"><a href="#dom-context-2d-getimagedata">getImageData()</a></code> method of + the 2D context of a <code><a href="#the-canvas-element">canvas</a></code> element whose + <i>origin-clean</i> flag is set to false is called with otherwise + correct arguments, the method must raise a <code><a href="#security_err">SECURITY_ERR</a></code> + exception.</p> + + <p>Whenever the <code title="dom-context-2d-measureText"><a href="#dom-context-2d-measuretext">measureText()</a></code> method of + the 2D context of a <code><a href="#the-canvas-element">canvas</a></code> element ends up using a font + that has an <a href="#origin">origin</a> that is not the <a href="#same-origin" title="same + origin">same</a> as that of the <code><a href="#document">Document</a></code> object that + owns the <code><a href="#the-canvas-element">canvas</a></code> element, the method must raise a + <code><a href="#security_err">SECURITY_ERR</a></code> exception.</p> + + <p class="note">Even resetting the canvas state by changing its + <code title="attr-canvas-width"><a href="#attr-canvas-width">width</a></code> or <code title="attr-canvas-height"><a href="#attr-canvas-height">height</a></code> attributes doesn't reset + the <i>origin-clean</i> flag.</p> + + </div> + + + + </body></html> diff --git a/testing/web-platform/tests/2dcontext/tools/gentest.py b/testing/web-platform/tests/2dcontext/tools/gentest.py new file mode 100644 index 000000000..079f476d2 --- /dev/null +++ b/testing/web-platform/tests/2dcontext/tools/gentest.py @@ -0,0 +1,787 @@ +# Copyright (c) 2010 Philip Taylor +# Released under the BSD license and W3C Test Suite License: see LICENSE.txt + +# Current code status: +# +# This was originally written for use at +# http://philip.html5.org/tests/canvas/suite/tests/ +# +# It has been adapted for use with the Web Platform Test Suite suite at +# https://github.com/w3c/web-platform-tests/ +# +# The W3C version excludes a number of features (multiple versions of each test +# case of varying verbosity, Mozilla mochitests, semi-automated test harness) +# to focus on simply providing reviewable test cases. It also expects a different +# directory structure. +# This code attempts to support both versions, but the non-W3C version hasn't +# been tested recently and is probably broken. + +# To update or add test cases: +# +# * Modify the tests*.yaml files. +# 'name' is an arbitrary hierarchical name to help categorise tests. +# 'desc' is a rough description of what behaviour the test aims to test. +# 'testing' is a list of references to spec.yaml, to show which spec sentences +# this test case is primarily testing. +# 'code' is JavaScript code to execute, with some special commands starting with '@' +# 'expected' is what the final canvas output should be: a string 'green' or 'clear' +# (100x50 images in both cases), or a string 'size 100 50' (or any other size) +# followed by Python code using Pycairo to generate the image. +# +# * Run "python gentest.py". +# This requires a few Python modules which might not be ubiquitous. +# It has only been tested on Linux. +# It will usually emit some warnings, which ideally should be fixed but can +# generally be safely ignored. +# +# * Test the tests, add new ones to Git, remove deleted ones from Git, etc. + +import re +import codecs +import time +import os +import shutil +import sys +import xml.dom.minidom +from xml.dom.minidom import Node + +import cairo + +try: + import syck as yaml # compatible and lots faster +except ImportError: + import yaml + +# Default mode is for the W3C test suite; the --standalone option +# generates various extra files that aren't needed there +W3CMODE = True +if '--standalone' in sys.argv: + W3CMODE = False + +TESTOUTPUTDIR = '../../2dcontext' +IMAGEOUTPUTDIR = '../../2dcontext' +MISCOUTPUTDIR = './output' +SPECOUTPUTDIR = '../../annotated-spec' + +SPECOUTPUTPATH = '../annotated-spec' # relative to TESTOUTPUTDIR + +def simpleEscapeJS(str): + return str.replace('\\', '\\\\').replace('"', '\\"') + +def escapeJS(str): + str = simpleEscapeJS(str) + str = re.sub(r'\[(\w+)\]', r'[\\""+(\1)+"\\"]', str) # kind of an ugly hack, for nicer failure-message output + return str + +def escapeHTML(str): + return str.replace('&', '&').replace('<', '<').replace('>', '>').replace('"', '"') + +def expand_nonfinite(method, argstr, tail): + """ + >>> print expand_nonfinite('f', '<0 a>, <0 b>', ';') + f(a, 0); + f(0, b); + f(a, b); + >>> print expand_nonfinite('f', '<0 a>, <0 b c>, <0 d>', ';') + f(a, 0, 0); + f(0, b, 0); + f(0, c, 0); + f(0, 0, d); + f(a, b, 0); + f(a, b, d); + f(a, 0, d); + f(0, b, d); + """ + # argstr is "<valid-1 invalid1-1 invalid2-1 ...>, ..." (where usually + # 'invalid' is Infinity/-Infinity/NaN) + args = [] + for arg in argstr.split(', '): + a = re.match('<(.*)>', arg).group(1) + args.append(a.split(' ')) + calls = [] + # Start with the valid argument list + call = [ args[j][0] for j in range(len(args)) ] + # For each argument alone, try setting it to all its invalid values: + for i in range(len(args)): + for a in args[i][1:]: + c2 = call[:] + c2[i] = a + calls.append(c2) + # For all combinations of >= 2 arguments, try setting them to their + # first invalid values. (Don't do all invalid values, because the + # number of combinations explodes.) + def f(c, start, depth): + for i in range(start, len(args)): + if len(args[i]) > 1: + a = args[i][1] + c2 = c[:] + c2[i] = a + if depth > 0: calls.append(c2) + f(c2, i+1, depth+1) + f(call, 0, 0) + + return '\n'.join('%s(%s)%s' % (method, ', '.join(c), tail) for c in calls) + +# Run with --test argument to run unit tests +if len(sys.argv) > 1 and sys.argv[1] == '--test': + import doctest + doctest.testmod() + sys.exit() + +templates = yaml.load(open('templates.yaml', "r").read()) +name_mapping = yaml.load(open('name2dir.yaml', "r").read()) + +spec_assertions = [] +for s in yaml.load(open('spec.yaml', "r").read())['assertions']: + if 'meta' in s: + eval(compile(s['meta'], '<meta spec assertion>', 'exec'), {}, {'assertions':spec_assertions}) + else: + spec_assertions.append(s) + +tests = [] +for t in sum([ yaml.load(open(f, "r").read()) for f in ['tests.yaml', 'tests2d.yaml', 'tests2dtext.yaml']], []): + if 'DISABLED' in t: + continue + if 'meta' in t: + eval(compile(t['meta'], '<meta test>', 'exec'), {}, {'tests':tests}) + else: + tests.append(t) + +category_names = [] +category_contents_direct = {} +category_contents_all = {} + +spec_ids = {} +for t in spec_assertions: spec_ids[t['id']] = True +spec_refs = {} + +def backref_html(name): + backrefs = [] + c = '' + for p in name.split('.')[:-1]: + c += '.'+p + backrefs.append('<a href="index%s.html">%s</a>.' % (c, p)) + backrefs.append(name.split('.')[-1]) + return ''.join(backrefs) + +def make_flat_image(filename, w, h, r,g,b,a): + if os.path.exists('%s/%s' % (IMAGEOUTPUTDIR, filename)): + return filename + surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, w, h) + cr = cairo.Context(surface) + cr.set_source_rgba(r, g, b, a) + cr.rectangle(0, 0, w, h) + cr.fill() + surface.write_to_png('%s/%s' % (IMAGEOUTPUTDIR, filename)) + return filename + +# Ensure the test output directories exist +testdirs = [TESTOUTPUTDIR, IMAGEOUTPUTDIR, MISCOUTPUTDIR] +if not W3CMODE: testdirs.append('%s/mochitests' % MISCOUTPUTDIR) +else: + for map_dir in set(name_mapping.values()): + testdirs.append("%s/%s" % (TESTOUTPUTDIR, map_dir)) +for d in testdirs: + try: os.mkdir(d) + except: pass # ignore if it already exists + +mochitests = [] +used_images = {} + +def expand_test_code(code): + code = re.sub(r'@nonfinite ([^(]+)\(([^)]+)\)(.*)', lambda m: expand_nonfinite(m.group(1), m.group(2), m.group(3)), code) # must come before '@assert throws' + + code = re.sub(r'@assert pixel (\d+,\d+) == (\d+,\d+,\d+,\d+);', + r'_assertPixel(canvas, \1, \2, "\1", "\2");', + code) + + code = re.sub(r'@assert pixel (\d+,\d+) ==~ (\d+,\d+,\d+,\d+);', + r'_assertPixelApprox(canvas, \1, \2, "\1", "\2", 2);', + code) + + code = re.sub(r'@assert pixel (\d+,\d+) ==~ (\d+,\d+,\d+,\d+) \+/- (\d+);', + r'_assertPixelApprox(canvas, \1, \2, "\1", "\2", \3);', + code) + + code = re.sub(r'@assert throws (\S+_ERR) (.*);', + r'assert_throws("\1", function() { \2; });', + code) + + code = re.sub(r'@assert throws (\S+Error) (.*);', + r'assert_throws(new \1(), function() { \2; });', + code) + + code = re.sub(r'@assert throws (.*);', + r'assert_throws(null, function() { \1; });', + code) + + code = re.sub(r'@assert (.*) === (.*);', + lambda m: '_assertSame(%s, %s, "%s", "%s");' + % (m.group(1), m.group(2), escapeJS(m.group(1)), escapeJS(m.group(2))) + , code) + + code = re.sub(r'@assert (.*) !== (.*);', + lambda m: '_assertDifferent(%s, %s, "%s", "%s");' + % (m.group(1), m.group(2), escapeJS(m.group(1)), escapeJS(m.group(2))) + , code) + + code = re.sub(r'@assert (.*) =~ (.*);', + lambda m: 'assert_regexp_match(%s, %s);' + % (m.group(1), m.group(2)) + , code) + + code = re.sub(r'@assert (.*);', + lambda m: '_assert(%s, "%s");' + % (m.group(1), escapeJS(m.group(1))) + , code) + + code = re.sub(r' @moz-todo', '', code) + + code = re.sub(r'@moz-UniversalBrowserRead;', + "" + , code) + + assert('@' not in code) + + return code + +def expand_mochitest_code(code): + code = re.sub(r'@nonfinite ([^(]+)\(([^)]+)\)(.*)', lambda m: expand_nonfinite(m.group(1), m.group(2), m.group(3)), code) + + code = re.sub(r'@assert pixel (\d+,\d+) == (\d+,\d+,\d+,\d+);', + r'isPixel(ctx, \1, \2, "\1", "\2", 0);', + code) + + code = re.sub(r'@assert pixel (\d+,\d+) ==~ (\d+,\d+,\d+,\d+);', + r'isPixel(ctx, \1, \2, "\1", "\2", 2);', + code) + + code = re.sub(r'@assert pixel (\d+,\d+) ==~ (\d+,\d+,\d+,\d+) \+/- (\d+);', + r'isPixel(ctx, \1, \2, "\1", "\2", \3);', + code) + + code = re.sub(r'@assert throws (\S+_ERR) (.*);', + lambda m: 'var _thrown = undefined; try {\n %s;\n} catch (e) { _thrown = e }; ok(_thrown && _thrown.code == DOMException.%s, "should throw %s");' + % (m.group(2), m.group(1), m.group(1)) + , code) + + code = re.sub(r'@assert throws (\S+Error) (.*);', + lambda m: 'var _thrown = undefined; try {\n %s;\n} catch (e) { _thrown = e }; ok(_thrown && (_thrown instanceof %s), "should throw %s");' + % (m.group(2), m.group(1), m.group(1)) + , code) + + code = re.sub(r'@assert throws (.*);', + lambda m: 'try { var _thrown = false;\n %s;\n} catch (e) { _thrown = true; } finally { ok(_thrown, "should throw exception"); }' + % (m.group(1)) + , code) + + code = re.sub(r'@assert (.*) =~ (.*);', + lambda m: 'ok(%s.match(%s), "%s.match(%s)");' + % (m.group(1), m.group(2), escapeJS(m.group(1)), escapeJS(m.group(2))) + , code) + + code = re.sub(r'@assert (.*);', + lambda m: 'ok(%s, "%s");' + % (m.group(1), escapeJS(m.group(1))) + , code) + + code = re.sub(r'((?:^|\n|;)\s*)ok(.*;) @moz-todo', + lambda m: '%stodo%s' + % (m.group(1), m.group(2)) + , code) + + code = re.sub(r'((?:^|\n|;)\s*)(is.*;) @moz-todo', + lambda m: '%stodo_%s' + % (m.group(1), m.group(2)) + , code) + + code = re.sub(r'@moz-UniversalBrowserRead;', + "netscape.security.PrivilegeManager.enablePrivilege('UniversalBrowserRead');" + , code) + + code = code.replace('../images/', 'image_') + + assert '@' not in code, '@ not in code:\n%s' % code + + return code + +used_tests = {} +for i in range(len(tests)): + test = tests[i] + + name = test['name'] + print "\r(%s)" % name, " "*32, "\t", + + if name in used_tests: + print "Test %s is defined twice" % name + used_tests[name] = 1 + + mapped_name = None + for mn in sorted(name_mapping.keys(), key=len, reverse=True): + if name.startswith(mn): + mapped_name = "%s/%s" % (name_mapping[mn], name) + break + if not mapped_name: + print "LIKELY ERROR: %s has no defined target directory mapping" % name + mapped_name = name + if 'manual' in test: + mapped_name += "-manual" + + cat_total = '' + for cat_part in [''] + name.split('.')[:-1]: + cat_total += cat_part+'.' + if not cat_total in category_names: category_names.append(cat_total) + category_contents_all.setdefault(cat_total, []).append(name) + category_contents_direct.setdefault(cat_total, []).append(name) + + for ref in test.get('testing', []): + if ref not in spec_ids: + print "Test %s uses nonexistent spec point %s" % (name, ref) + spec_refs.setdefault(ref, []).append(name) + #if not (len(test.get('testing', [])) or 'mozilla' in test): + if not test.get('testing', []): + print "Test %s doesn't refer to any spec points" % name + + if test.get('expected', '') == 'green' and re.search(r'@assert pixel .* 0,0,0,0;', test['code']): + print "Probable incorrect pixel test in %s" % name + + code = expand_test_code(test['code']) + + mochitest = not (W3CMODE or 'manual' in test or 'disabled' in test.get('mozilla', {})) + if mochitest: + mochi_code = expand_mochitest_code(test['code']) + + mochi_name = name + if 'mozilla' in test: + if 'throws' in test['mozilla']: + mochi_code = templates['mochitest.exception'] % mochi_code + if 'bug' in test['mozilla']: + mochi_name = "%s - bug %s" % (name, test['mozilla']['bug']) + + if 'desc' in test: + mochi_desc = '<!-- Testing: %s -->\n' % test['desc'] + else: + mochi_desc = '' + + if 'deferTest' in mochi_code: + mochi_setup = '' + mochi_footer = '' + else: + mochi_setup = '' + mochi_footer = 'SimpleTest.finish();\n' + + for f in ['isPixel', 'todo_isPixel', 'deferTest', 'wrapFunction']: + if f in mochi_code: + mochi_setup += templates['mochitest.%s' % f] + else: + if not W3CMODE: + print "Skipping mochitest for %s" % name + mochi_name = '' + mochi_desc = '' + mochi_code = '' + mochi_setup = '' + mochi_footer = '' + + expectation_html = '' + if 'expected' in test and test['expected'] is not None: + expected = test['expected'] + expected_img = None + if expected == 'green': + expected_img = make_flat_image('green-100x50.png', 100, 50, 0,1,0,1) + if W3CMODE: expected_img = "/images/" + expected_img + elif expected == 'clear': + expected_img = make_flat_image('clear-100x50.png', 100, 50, 0,0,0,0) + if W3CMODE: expected_img = "/images/" + expected_img + else: + if ';' in expected: print "Found semicolon in %s" % name + expected = re.sub(r'^size (\d+) (\d+)', + r'surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, \1, \2)\ncr = cairo.Context(surface)', + expected) + + if mapped_name.endswith("-manual"): + png_name = mapped_name[:-len("-manual")] + else: + png_name = mapped_name + expected += "\nsurface.write_to_png('%s/%s.png')\n" % (IMAGEOUTPUTDIR, png_name) + eval(compile(expected, '<test %s>' % test['name'], 'exec'), {}, {'cairo':cairo}) + expected_img = "%s.png" % name + + if expected_img: + expectation_html = ('<p class="output expectedtext">Expected output:' + + '<p><img src="%s" class="output expected" id="expected" alt="">' % (expected_img)) + + canvas = test.get('canvas', 'width="100" height="50"') + + prev = tests[i-1]['name'] if i != 0 else 'index' + next = tests[i+1]['name'] if i != len(tests)-1 else 'index' + + name_wrapped = name.replace('.', '.​') # (see https://bugzilla.mozilla.org/show_bug.cgi?id=376188) + + refs = ''.join('<li><a href="%s/canvas.html#testrefs.%s">%s</a>\n' % (SPECOUTPUTPATH, n,n) for n in test.get('testing', [])) + if not W3CMODE and 'mozilla' in test and 'bug' in test['mozilla']: + refs += '<li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=%d">Bugzilla</a>' % test['mozilla']['bug'] + + notes = '<p class="notes">%s' % test['notes'] if 'notes' in test else '' + + scripts = '' + for s in test.get('scripts', []): + scripts += '<script src="%s"></script>\n' % (s) + + images = '' + for i in test.get('images', []): + id = i.split('/')[-1] + if '/' not in i: + used_images[i] = 1 + i = '../images/%s' % i + images += '<img src="%s" id="%s" class="resource">\n' % (i,id) + mochi_images = images.replace('../images/', 'image_') + if W3CMODE: images = images.replace("../images/", "/images/") + + fonts = '' + fonthack = '' + for i in test.get('fonts', []): + fonts += '@font-face {\n font-family: %s;\n src: url("/fonts/%s.ttf");\n}\n' % (i, i) + # Browsers require the font to actually be used in the page + if test.get('fonthack', 1): + fonthack += '<span style="font-family: %s; position: absolute; visibility: hidden">A</span>\n' % i + if fonts: + fonts = '<style>\n%s</style>\n' % fonts + + fallback = test.get('fallback', '<p class="fallback">FAIL (fallback content)</p>') + + desc = test.get('desc', '') + escaped_desc = simpleEscapeJS(desc) + template_params = { + 'name':name, 'name_wrapped':name_wrapped, 'backrefs':backref_html(name), + 'mapped_name':mapped_name, + 'desc':desc, 'escaped_desc':escaped_desc, + 'prev':prev, 'next':next, 'refs':refs, 'notes':notes, 'images':images, + 'fonts':fonts, 'fonthack':fonthack, + 'canvas':canvas, 'expected':expectation_html, 'code':code, 'scripts':scripts, + 'mochi_name':mochi_name, 'mochi_desc':mochi_desc, 'mochi_code':mochi_code, + 'mochi_setup':mochi_setup, 'mochi_footer':mochi_footer, 'mochi_images':mochi_images, + 'fallback':fallback + } + + if W3CMODE: + f = codecs.open('%s/%s.html' % (TESTOUTPUTDIR, mapped_name), 'w', 'utf-8') + f.write(templates['w3c'] % template_params) + else: + f = codecs.open('%s/%s.html' % (TESTOUTPUTDIR, name), 'w', 'utf-8') + f.write(templates['standalone'] % template_params) + + f = codecs.open('%s/framed.%s.html' % (TESTOUTPUTDIR, name), 'w', 'utf-8') + f.write(templates['framed'] % template_params) + + f = codecs.open('%s/minimal.%s.html' % (TESTOUTPUTDIR, name), 'w', 'utf-8') + f.write(templates['minimal'] % template_params) + + if mochitest: + mochitests.append(name) + f = codecs.open('%s/mochitests/test_%s.html' % (MISCOUTPUTDIR, name), 'w', 'utf-8') + f.write(templates['mochitest'] % template_params) + +def write_mochitest_makefile(): + f = open('%s/mochitests/Makefile.in' % MISCOUTPUTDIR, 'w') + f.write(templates['mochitest.Makefile']) + files = ['test_%s.html' % n for n in mochitests] + ['image_%s' % n for n in used_images] + chunksize = 100 + chunks = [] + for i in range(0, len(files), chunksize): + chunk = files[i:i+chunksize] + name = '_TEST_FILES_%d' % (i / chunksize) + chunks.append(name) + f.write('%s = \\\n' % name) + for file in chunk: f.write('\t%s \\\n' % file) + f.write('\t$(NULL)\n\n') + f.write('# split up into groups to work around command-line length limits\n') + for name in chunks: + f.write('libs:: $(%s)\n\t$(INSTALL) $(foreach f,$^,"$f") $(DEPTH)/_tests/testing/mochitest/tests/$(relativesrcdir)\n\n' % name) + +if not W3CMODE: + for i in used_images: + shutil.copyfile("../../images/%s" % i, "%s/mochitests/image_%s" % (MISCOUTPUTDIR, i)) + write_mochitest_makefile() + +print + +def write_index(): + f = open('%s/index.html' % TESTOUTPUTDIR, 'w') + f.write(templates['index.w3c' if W3CMODE else 'index'] % { 'updated':time.strftime('%Y-%m-%d', time.gmtime()) }) + f.write('\n<ul class="testlist">\n') + depth = 1 + for category in category_names: + name = category[1:-1] or '' + count = len(category_contents_all[category]) + new_depth = category.count('.') + while new_depth < depth: f.write(' '*(depth-1) + '</ul>\n'); depth -= 1 + f.write(' '*depth + templates['index.w3c.category.item' if W3CMODE else 'index.category.item'] % (name or 'all', name, count, '' if count==1 else 's')) + while new_depth+1 > depth: f.write(' '*depth + '<ul>\n'); depth += 1 + for item in category_contents_direct.get(category, []): + f.write(' '*depth + '<li><a href="%s.html">%s</a>\n' % (item, item) ) + while 0 < depth: f.write(' '*(depth-1) + '</ul>\n'); depth -= 1 + +def write_category_indexes(): + for category in category_names: + name = (category[1:-1] or 'all') + + f = open('%s/index.%s.html' % (TESTOUTPUTDIR, name), 'w') + f.write(templates['index.w3c.frame' if W3CMODE else 'index.frame'] % { 'backrefs':backref_html(name), 'category':name }) + for item in category_contents_all[category]: + f.write(templates['index.w3c.frame.item' if W3CMODE else 'index.frame.item'] % item) + +def write_reportgen(): + f = open('%s/reportgen.html' % MISCOUTPUTDIR, 'w') + items_text = ',\n'.join(('"%s"' % item) for item in category_contents_all['.']) + f.write(templates['reportgen'] % {'items':items_text }) + +def write_results(): + results = {} + uas = [] + uastrings = {} + for item in category_contents_all['.']: results[item] = {} + + f = open('%s/results.html' % MISCOUTPUTDIR, 'w') + f.write(templates['results']) + + if not os.path.exists('results.yaml'): + print "Can't find results.yaml" + else: + for resultset in yaml.load(open('results.yaml', "r").read()): + #title = "%s (%s)" % (resultset['ua'], resultset['time']) + title = resultset['name'] + #assert title not in uas # don't allow repetitions + if title not in uas: + uas.append(title) + uastrings[title] = resultset['ua'] + else: + assert uastrings[title] == resultset['ua'] + for r in resultset['results']: + if r['id'] not in results: + print 'Skipping results for removed test %s' % r['id'] + continue + results[r['id']][title] = ( + r['status'].lower(), + re.sub(r'%(..)', lambda m: chr(int(m.group(1), 16)), + re.sub(r'%u(....)', lambda m: unichr(int(m.group(1), 16)), + r['notes'])).encode('utf8') + ) + + passes = {} + for ua in uas: + f.write('<th title="%s">%s\n' % (uastrings[ua], ua)) + passes[ua] = 0 + for id in category_contents_all['.']: + f.write('<tr><td><a href="#%s" id="%s">#</a> <a href="%s.html">%s</a>\n' % (id, id, id, id)) + for ua in uas: + status, details = results[id].get(ua, ('', '')) + f.write('<td class="r %s"><ul class="d">%s</ul>\n' % (status, details)) + if status == 'pass': passes[ua] += 1 + f.write('<tr><th>Passes\n') + for ua in uas: + f.write('<td>%.1f%%\n' % ((100.0 * passes[ua]) / len(category_contents_all['.']))) + f.write('<tr><td>\n') + for ua in uas: + f.write('<td>%s\n' % ua) + f.write('</table>\n') + +def getNodeText(node): + t, offsets = '', [] + + # Skip over any previous annotations we added + if node.nodeType == node.ELEMENT_NODE and 'testrefs' in node.getAttribute('class').split(' '): + return t, offsets + + if node.nodeType == node.TEXT_NODE: + val = node.nodeValue + val = val.replace(unichr(0xa0), ' ') # replace s + t += val + offsets += [ (node, len(node.nodeValue)) ] + for n in node.childNodes: + child_t, child_offsets = getNodeText(n) + t += child_t + offsets += child_offsets + return t, offsets + +def htmlSerializer(element): + element.normalize() + rv = [] + specialtext = ['style', 'script', 'xmp', 'iframe', 'noembed', 'noframes', 'noscript'] + empty = ['area', 'base', 'basefont', 'bgsound', 'br', 'col', 'embed', 'frame', + 'hr', 'img', 'input', 'link', 'meta', 'param', 'spacer', 'wbr'] + + def serializeElement(element): + if element.nodeType == Node.DOCUMENT_TYPE_NODE: + rv.append("<!DOCTYPE %s>" % element.name) + elif element.nodeType == Node.DOCUMENT_NODE: + for child in element.childNodes: + serializeElement(child) + elif element.nodeType == Node.COMMENT_NODE: + rv.append("<!--%s-->" % element.nodeValue) + elif element.nodeType == Node.TEXT_NODE: + unescaped = False + n = element.parentNode + while n is not None: + if n.nodeName in specialtext: + unescaped = True + break + n = n.parentNode + if unescaped: + rv.append(element.nodeValue) + else: + rv.append(escapeHTML(element.nodeValue)) + else: + rv.append("<%s" % element.nodeName) + if element.hasAttributes(): + for name, value in element.attributes.items(): + rv.append(' %s="%s"' % (name, escapeHTML(value))) + rv.append(">") + if element.nodeName not in empty: + for child in element.childNodes: + serializeElement(child) + rv.append("</%s>" % element.nodeName) + serializeElement(element) + return '<!DOCTYPE html>\n' + ''.join(rv) + +def write_annotated_spec(): + # Load the stripped-down XHTMLised copy of the spec + doc = xml.dom.minidom.parse(open('current-work-canvas.xhtml', 'r')) + + # Insert our new stylesheet + n = doc.getElementsByTagName('head')[0].appendChild(doc.createElement('link')) + n.setAttribute('rel', 'stylesheet') + n.setAttribute('href', '../common/canvas-spec.css' if W3CMODE else '../spectest.css') + n.setAttribute('type', 'text/css') + + spec_assertion_patterns = [] + for a in spec_assertions: + # Warn about problems + if a['id'] not in spec_refs: + print "Unused spec statement %s" % a['id'] + + pattern_text = a['text'] + + if 'keyword' in a: + # Explicit keyword override + keyword = a['keyword'] + else: + # Extract the marked keywords, and remove the markers + keyword = 'none' + for kw in ['must', 'should', 'required']: + if ('*%s*' % kw) in pattern_text: + keyword = kw + pattern_text = pattern_text.replace('*%s*' % kw, kw) + break + # Make sure there wasn't >1 keyword + for kw in ['must', 'should', 'required']: + assert('*%s*' % kw not in pattern_text) + + # Convert the special pattern format into regexp syntax + pattern_text = (pattern_text. + # Escape relevant characters + replace('*', r'\*'). + replace('+', r'\+'). + replace('.', r'\.'). + replace('(', r'\('). + replace(')', r'\)'). + replace('[', r'\['). + replace(']', r'\]'). + # Convert special sequences back into unescaped regexp code + replace(' ', r'\s+'). + replace(r'<\.\.\.>', r'.+'). + replace('<^>', r'()'). + replace('<eol>', r'\s*?\n') + ) + pattern = re.compile(pattern_text, re.S) + spec_assertion_patterns.append( (a['id'], pattern, keyword, a.get('previously', None)) ) + matched_assertions = {} + + def process_element(e): + if e.nodeType == e.ELEMENT_NODE and (e.getAttribute('class') == 'impl' or e.hasAttribute('data-component')): + for c in e.childNodes: + process_element(c) + return + + t, offsets = getNodeText(e) + for id, pattern, keyword, previously in spec_assertion_patterns: + m = pattern.search(t) + if m: + # When the pattern-match isn't enough to uniquely identify a sentence, + # allow explicit back-references to earlier paragraphs + if previously: + if len(previously) >= 3: + n, text, exp = previously + else: + n, text = previously + exp = True + node = e + while n and node.previousSibling: + node = node.previousSibling + n -= 1 + if (text not in getNodeText(node)[0]) == exp: + continue # discard this match + + if id in matched_assertions: + print "Spec statement %s matches multiple places" % id + matched_assertions[id] = True + + if m.lastindex != 1: + print "Spec statement %s has incorrect number of match groups" % id + + end = m.end(1) + end_node = None + for end_node, o in offsets: + if end < o: + break + end -= o + assert(end_node) + + n1 = doc.createElement('span') + n1.setAttribute('class', 'testrefs kw-%s' % keyword) + n1.setAttribute('id', 'testrefs.%s' % id) + n1.appendChild(doc.createTextNode(' ')) + + n = n1.appendChild(doc.createElement('a')) + n.setAttribute('href', '#testrefs.%s' % id) + n.setAttribute('title', id) + n.appendChild(doc.createTextNode('#')) + + n1.appendChild(doc.createTextNode(' ')) + for test_id in spec_refs.get(id, []): + n = n1.appendChild(doc.createElement('a')) + n.setAttribute('href', '../canvas/%s.html' % test_id) + n.appendChild(doc.createTextNode(test_id)) + n1.appendChild(doc.createTextNode(' ')) + n0 = doc.createTextNode(end_node.nodeValue[:end]) + n2 = doc.createTextNode(end_node.nodeValue[end:]) + + p = end_node.parentNode + p.replaceChild(n2, end_node) + p.insertBefore(n1, n2) + p.insertBefore(n0, n1) + + t, offsets = getNodeText(e) + + for e in doc.getElementsByTagName('body')[0].childNodes: + process_element(e) + + for s in spec_assertions: + if s['id'] not in matched_assertions: + print "Annotation incomplete: Unmatched spec statement %s" % s['id'] + + # Convert from XHTML back to HTML + doc.documentElement.removeAttribute('xmlns') + doc.documentElement.setAttribute('lang', doc.documentElement.getAttribute('xml:lang')) + + head = doc.documentElement.getElementsByTagName('head')[0] + head.insertBefore(doc.createElement('meta'), head.firstChild).setAttribute('charset', 'UTF-8') + + f = codecs.open('%s/canvas.html' % SPECOUTPUTDIR, 'w', 'utf-8') + f.write(htmlSerializer(doc)) + +if not W3CMODE: + write_index() + write_category_indexes() + write_reportgen() + write_results() + write_annotated_spec() diff --git a/testing/web-platform/tests/2dcontext/tools/name2dir.yaml b/testing/web-platform/tests/2dcontext/tools/name2dir.yaml new file mode 100644 index 000000000..6c170ce55 --- /dev/null +++ b/testing/web-platform/tests/2dcontext/tools/name2dir.yaml @@ -0,0 +1,45 @@ +2d.transformation: "transformations" +2d.composite: "compositing" +2d.coordinatespace: "conformance-requirements" +2d.missingargs: "conformance-requirements" +2d.type.delete: "conformance-requirements" +2d.voidreturn: "conformance-requirements" +2d.drawImage: "drawing-images-to-the-canvas" +2d.clearRect: "drawing-rectangles-to-the-canvas" +2d.fillRect: "drawing-rectangles-to-the-canvas" +2d.strokeRect: "drawing-rectangles-to-the-canvas" +2d.text.draw: "drawing-text-to-the-canvas" +2d.text.draw.baseline.alphabetic: "drawing-text-to-the-canvas" +2d.text.draw.space.basic: "drawing-text-to-the-canvas" +2d.text.draw.space.collapse: "drawing-text-to-the-canvas" +2d.text.measure: "drawing-text-to-the-canvas" +2d.fillStyle: "fill-and-stroke-styles" +2d.gradient: "fill-and-stroke-styles" +2d.pattern: "fill-and-stroke-styles" +2d.strokeStyle: "fill-and-stroke-styles" +2d.line: "line-styles" +2d.path: "path-objects" +2d.imageData: "pixel-manipulation" +2d.shadow: "shadows" +2d.text.align: "text-styles" +2d.text.baseline: "text-styles" +2d.text.font: "text-styles" +2d.text.draw.baseline: "text-styles" +2d.text.draw.space: "text-styles" +2d.text.measure.width.space: "text-styles" +2d.text.draw.space.collapse.end: "text-styles" +2d.text.draw.space.collapse.other: "text-styles" +2d.text.draw.space.collapse.space: "text-styles" +2d.text.draw.space.collapse.start: "text-styles" +2d.state: "the-canvas-state" +2d.canvas: "../html/semantics/embedded-content/the-canvas-element/" +2d.getcontext: "../html/semantics/embedded-content/the-canvas-element/" +2d.scaled: "../html/semantics/embedded-content/the-canvas-element/" +2d.type: "../html/semantics/embedded-content/the-canvas-element/" +context: "../html/semantics/embedded-content/the-canvas-element/" +fallback: "../html/semantics/embedded-content/the-canvas-element/" +initial: "../html/semantics/embedded-content/the-canvas-element/" +security: "../html/semantics/embedded-content/the-canvas-element/" +size: "../html/semantics/embedded-content/the-canvas-element/" +toDataURL: "../html/semantics/embedded-content/the-canvas-element/" +type: "../html/semantics/embedded-content/the-canvas-element/" diff --git a/testing/web-platform/tests/2dcontext/tools/spec.yaml b/testing/web-platform/tests/2dcontext/tools/spec.yaml new file mode 100644 index 000000000..12b7d6be9 --- /dev/null +++ b/testing/web-platform/tests/2dcontext/tools/spec.yaml @@ -0,0 +1,717 @@ +# Extracts from http://www.whatwg.org/specs/web-apps/current-work/ +# +# (c) Copyright 2004-2011 Apple Computer, Inc., Mozilla Foundation, and Opera Software ASA. +# You are granted a license to use, reproduce and create derivative works of this document. + +assertions: + - id: canvas.type + text: "interface HTMLCanvasElement<^> : HTMLElement {" + - id: size.width + text: "interface HTMLCanvasElement<...>attribute unsigned long width;<^>" + - id: size.height + text: "interface HTMLCanvasElement<...>attribute unsigned long height;<^>" + - id: canvas.getContext + text: "interface HTMLCanvasElement<...>object\\? getContext(in DOMString contextId, in any... args);<^>" + - id: fallback + text: "The contents of the canvas element, if any, are the element's fallback content<^>." + - id: size.nonnegativeinteger + text: "The rules for parsing non-negative integers *must* be used to obtain their numeric values<^>." + - id: size.missing + text: "If an attribute is missing<^>, <...> then the default value *must* be used instead." + - id: size.error + text: "if parsing its value returns an error<^>, then the default value *must* be used instead." + - id: size.default + text: "The width attribute defaults to 300, and the height attribute defaults to 150<^>." + - id: size.css + text: "the element can be sized arbitrarily by a style sheet. During rendering, the image is scaled to fit this layout size<^>." + - id: initial.reset + text: "When the canvas element is created, and subsequently whenever the width and height attributes are set (whether to a new value or to the previous value), the bitmap and any associated contexts *must* be cleared back to their initial state <...><^>." + - id: initial.colour + text: "When the canvas is initialized, its bitmap *must* be cleared to transparent black<^>." + - id: size.reflect + text: "The width and height IDL attributes *must* reflect the respective content attributes of the same name<^>," + + - id: context.unrecognised + text: "If contextId is not the name of a context supported by the user agent, return null and abort these steps<^>." + - id: context.unique + text: "If the getContext() method has already been invoked on this element for the same contextId, return the same object as was returned that time, and abort these steps<^>." + - id: context.2d + text: "When the getContext() method of a canvas element is to return a new object for the contextId 2d, the user agent *must* return a new CanvasRenderingContext2D object<^>." + - id: context.2d.extraargs + text: "When the getContext() method of a canvas element is to return a new object for the contextId 2d, the user agent *must* return a new CanvasRenderingContext2D object. Any additional arguments are ignored<^>." + + - id: toDataURL.noarguments + text: "When a user agent is to create a serialization of the image as a file, <...> if there are no arguments, in the PNG format<^>." + - id: toDataURL.zerosize + text: "If the canvas has no pixels (i.e. either its horizontal dimension or its vertical dimension is zero) then return the string \"data:,\"<^> and abort these steps." + - id: toDataURL.witharguments + text: "If arguments is not empty, the first value must be interpreted as a MIME type giving the format to use<^>." + - id: toDataURL.noalpha + text: "For image types that do not support an alpha channel, the serialized image *must* be the canvas image composited onto a solid black background using the source-over operator<^>." + - id: toDataURL.png + text: "User agents *must* support PNG (\"image/png\")<^>." + - id: toDataURL.unrecognised + text: "If the user agent does not support the requested type, it *must* create the file using the PNG format<^>." + - id: toDataURL.lowercase + text: "User agents *must* convert the provided type to ASCII lowercase before establishing if they support that type<^>." + - id: toDataURL.jpeg + previously: [ 0, "image/png", false ] + text: "image/jpeg<^>" + - id: toDataURL.jpeg.quality + text: "The second argument, if it is a number in the range 0.0 to 1.0 inclusive, *must* be treated as the desired quality level<^>." + - id: toDataURL.jpeg.nan + text: "If it is not a number<^> <...>, the user agent *must* use its default value, as if the argument had been omitted." + - id: toDataURL.jpeg.range + text: "If it is <...> outside that range<^>, the user agent *must* use its default value, as if the argument had been omitted." + - id: toDataURL.arguments + text: "Other arguments *must* be ignored and must not cause the user agent to raise an exception<^>." + + - id: 2d.coordinatespace + text: "flat Cartesian surface whose origin (0,0) is at the top left corner, with the coordinate space having x values increasing when going right, and y values increasing when going down<^>." + - id: context.2d.type + text: "interface CanvasRenderingContext2D<^> {" + - id: 2d.canvasGradient.type + text: "interface CanvasGradient<^> {" + - id: 2d.imageData.type + text: "interface ImageData<^> {" + - id: 2d.canvas.attribute + text: "readonly<^> attribute HTMLCanvasElement canvas;" + - id: 2d.canvas + text: "The canvas attribute *must* return the canvas element that the context paints on<^>." + - id: 2d.nonfinite + text: "Except where otherwise specified, for the 2D context interface, any method call with a numeric argument whose value is infinite or a NaN value *must* be ignored<^>." + + - id: 2d.currentColor.onset + text: "Whenever the CSS value currentColor is used as a color in this API, the \"computed value of the 'color' property\" for the purposes of determining the computed value of the currentColor keyword is the computed value of the 'color' property on the element in question at the time that the color is specified<^>" + - id: 2d.currentColor.outofdoc + text: "If the computed value of the 'color' property is undefined for a particular case (e.g. because the element is not in a Document), then the \"computed value of the 'color' property\" for the purposes of determining the computed value of the currentColor keyword is fully opaque black<^>." + - id: 2d.currentColor.gradient + text: "In the case of addColorStop() on CanvasGradient, the \"computed value of the 'color' property\" for the purposes of determining the computed value of the currentColor keyword is always fully opaque black<^> (there is no associated element)." + + - id: 2d.state.transformation + text: "The current transformation matrix<^>." + - id: 2d.state.clip + text: "The current clipping region<^>." + - meta: | + for s in [ + 'strokeStyle', 'fillStyle', 'globalAlpha', + 'lineWidth', 'lineCap', 'lineJoin', 'miterLimit', + 'shadowOffsetX', 'shadowOffsetY', 'shadowBlur', 'shadowColor', + 'globalCompositeOperation', + 'font', 'textAlign', 'textBaseline' + ]: + assertions.append( { + 'id': '2d.state.%s' % s, + 'text': 'The current values of the following attributes:<...>%s<^>' % s + } ) + - id: 2d.state.path + text: "The current path<^> <...> are not part of the drawing state." + - id: 2d.state.bitmap + text: "The <...> current bitmap<^> are not part of the drawing state." + + - id: 2d.state.save + text: "The save() method *must* push a copy of the current drawing state onto the drawing state stack<^>." + - id: 2d.state.restore + text: "The restore() method *must* pop the top entry in the drawing state stack, and reset the drawing state it describes<^>." + - id: 2d.state.restore.underflow + text: "If there is no saved state, the method *must* do nothing<^>." + + - id: 2d.transformation.initial + text: "When the context is created, the transformation matrix *must* initially be the identity transform<^>." + - id: 2d.transformation.order + text: "The transformations *must* be performed in reverse order<^>." + - id: 2d.transformation.scale + text: "The scale(x, y) method *must* add the scaling transformation described by the arguments to the transformation matrix<^>." + - id: 2d.transformation.scale.multiple + text: "The factors are multiples<^>." + - id: 2d.transformation.rotate + text: "The rotate(angle) method *must* add the rotation transformation described by the argument to the transformation matrix<^>." + - id: 2d.transformation.rotate.direction + text: "The angle argument represents a clockwise rotation angle<^>" + - id: 2d.transformation.rotate.radians + text: "The angle argument <...> expressed in radians<^>." + - id: 2d.transformation.translate + text: "The translate(x, y) method *must* add the translation transformation described by the arguments to the transformation matrix<^>." + - id: 2d.transformation.transform + text: "The transform(a, b, c, d, e, f) method *must* replace the current transformation matrix with the result of multiplying the current transformation matrix with the matrix described by<^>:" + - id: 2d.transformation.transform.multiply + text: "The transform(a, b, c, d, e, f) method *must* replace the current transformation matrix with the result of multiplying<^> the current transformation matrix with the matrix described by:" + - id: 2d.transformation.setTransform + text: "The setTransform(a, b, c, d, e, f) method *must* <...> invoke the transform(a, b, c, d, e, f) method with the same arguments<^>" + - id: 2d.transformation.setTransform.identity + text: "The setTransform(a, b, c, d, e, f) method *must* reset the current transform to the identity matrix<^>, " + + + - id: 2d.composite.operation + text: "All drawing operations are affected by the global compositing attributes, globalAlpha and globalCompositeOperation<^>." + + - id: 2d.composite.globalAlpha.shape + text: "The globalAlpha attribute gives an alpha value that is applied to shapes<^> and images before they are composited onto the canvas." + - id: 2d.composite.globalAlpha.image + text: "The globalAlpha attribute gives an alpha value that is applied to shapes and images<^> before they are composited onto the canvas." + - id: 2d.composite.globalAlpha.range + text: "The value must be in the range from 0.0 (fully transparent) to 1.0 (no additional transparency). If an attempt is made to set the attribute to a value outside this range, including Infinity and Not-a-Number (NaN) values, the attribute *must* retain its previous value<^>." + - id: 2d.composite.globalAlpha.default + text: "When the context is created, the globalAlpha attribute *must* initially have the value 1.0<^>." + + - id: 2d.composite.operation.shape + text: "The globalCompositeOperation attribute sets how shapes<^> and images are drawn onto the existing bitmap," + - id: 2d.composite.operation.image + text: "The globalCompositeOperation attribute sets how shapes and images<^> are drawn onto the existing bitmap," + + - id: 2d.composite.source-atop + text: "source-atop<^><eol>" + - id: 2d.composite.source-in + text: "source-in<^><eol>" + - id: 2d.composite.source-out + text: "source-out<^><eol>" + - id: 2d.composite.source-over + text: "source-over (default)<^><eol>" + - id: 2d.composite.destination-atop + text: "destination-atop<^><eol>" + - id: 2d.composite.destination-in + text: "destination-in<^><eol>" + - id: 2d.composite.destination-out + text: "destination-out<^><eol>" + - id: 2d.composite.destination-over + text: "destination-over<^><eol>" + - id: 2d.composite.lighter + text: "lighter<^><eol>" + - id: 2d.composite.copy + text: "copy<^><eol>" + - id: 2d.composite.xor + text: "xor<^><eol>" + + - id: 2d.composite.operation.casesensitive + text: "These values are all case-sensitive<^> <...> they *must* be used exactly as shown." + - id: 2d.composite.operation.exact + text: "User agents *must* not recognize values that are not a case-sensitive match for one of the values given above<^>." + - id: 2d.composite.operation.porterduff + text: "The operators in the above list *must* be treated as described by the Porter-Duff operator given at the start of their description (e.g. A over B)<^>." + - id: 2d.composite.operation.unrecognised + text: "On setting, if the user agent does not recognize the specified value, it *must* be ignored, leaving the value of globalCompositeOperation unaffected<^>." + - id: 2d.composite.operation.default + text: "When the context is created, the globalCompositeOperation attribute *must* initially have the value source-over<^>." + + + - id: 2d.colours.parse + text: "On setting, strings *must* be parsed as CSS <color> values and the color assigned<^>," + - id: 2d.gradient.assign + text: "On setting, <...> CanvasGradient<^> and CanvasPattern objects *must* be assigned themselves." + - id: 2d.pattern.assign + text: "On setting, <...> CanvasGradient and CanvasPattern<^> objects *must* be assigned themselves." + - id: 2d.colours.invalidstring + text: "If the value is a string but cannot be parsed as a CSS <color> value<^>, <...> then it *must* be ignored, and the attribute must retain its previous value." + - id: 2d.colours.invalidtype + text: "If the value is <...> neither a string, a CanvasGradient, nor a CanvasPattern<^>, then it *must* be ignored, and the attribute must retain its previous value." + - id: 2d.colours.getcolour + text: "On getting, if the value is a color, then the serialization of the color *must* be returned<^>." + - id: 2d.gradient.object + text: "if it is not a color but a CanvasGradient<^> or CanvasPattern, then the respective object *must* be returned." + - id: 2d.pattern.object + text: "if it is not a color but a CanvasGradient or CanvasPattern<^>, then the respective object *must* be returned." + - id: 2d.serializecolour.solid + text: "if it has alpha equal to 1.0, then the string is a lowercase six-digit hex value<^>" + - id: 2d.serializecolour.transparent + text: "Otherwise, the color value has alpha less than 1.0, and the string is the color value in the CSS rgba() functional-notation format<^>:" + - id: 2d.colours.default + text: "When the context is created, the strokeStyle and fillStyle attributes *must* initially have the string value #000000<^>." + + - id: 2d.gradient.interpolate.linear + text: "Between each such stop, the colors and the alpha component *must* be linearly interpolated<^> over the RGBA space without premultiplying the alpha value to find the color to use at that offset." + - id: 2d.gradient.interpolate.alpha + text: "Between each such stop, the colors and the alpha component *must* be linearly interpolated over the RGBA space without premultiplying the alpha value<^> to find the color to use at that offset." + - id: 2d.gradient.outside.first + text: "Before the first stop, the color *must* be the color of the first stop<^>." + - id: 2d.gradient.outside.last + text: "After the last stop, the color *must* be the color of the last stop<^>." + - id: 2d.gradient.empty + text: "When there are no stops, the gradient is transparent black<^>." + + + - id: 2d.gradient.invalidoffset + text: "If the offset is less than 0, greater than 1, infinite, or NaN, then an INDEX_SIZE_ERR exception *must* be raised<^>." + - id: 2d.gradient.invalidcolour + text: "If the color cannot be parsed as a CSS <color> value, then a SYNTAX_ERR exception *must* be raised<^>." + - id: 2d.gradient.update + text: "Otherwise, the gradient *must* have a new stop placed, at offset offset relative to the whole gradient, and with the color obtained by parsing color as a CSS <color> value<^>." + - id: 2d.gradient.interpolate.overlap + text: "If multiple stops are added at the same offset on a gradient, they *must* be placed in the order added, with the first one closest to the start of the gradient, <...><^>." + + - id: 2d.gradient.linear.nonfinite + text: "If any of the arguments to createLinearGradient() are infinite or NaN, the method *must* raise a NOT_SUPPORTED_ERR exception<^>." + - id: 2d.gradient.linear.return + text: "Otherwise, the method *must* return a linear CanvasGradient initialized with the specified line<^>." + - id: 2d.gradient.linear.rendering + text: "Linear gradients *must* be rendered such that all points on a line perpendicular to the line that crosses the start and end points have the color at the point where those two lines cross (with the colors coming from the interpolation and extrapolation described above)<^>." + - id: 2d.gradient.linear.transform + text: "The points in the linear gradient *must* be transformed as described by the current transformation matrix when rendering<^>." + - id: 2d.gradient.linear.zerosize + text: "If x0 = x1 and y0 = y1, then the linear gradient *must* paint nothing<^>." + + - id: 2d.gradient.radial.nonfinite + text: "If any of the arguments are infinite or NaN, a NOT_SUPPORTED_ERR exception *must* be raised<^>." + - id: 2d.gradient.radial.negative + text: "If either of r0 or r1 are negative, an INDEX_SIZE_ERR exception *must* be raised<^>." + - id: 2d.gradient.radial.return + text: "Otherwise, the method *must* return a radial CanvasGradient initialized with the two specified circles<^>." + - id: 2d.gradient.radial.rendering + text: "Radial gradients *must* be rendered by following these steps<^>:" + - id: 2d.gradient.radial.equal + text: "If x0 = x1 and y0 = y1 and r0 = r1, then the radial gradient *must* paint nothing<^>." + - id: 2d.gradient.extent + text: "Gradients *must* be painted only where the relevant stroking or filling effects requires that they be drawn<^>." + - id: 2d.gradient.radial.transform + text: "The points in the radial gradient *must* be transformed as described by the current transformation matrix when rendering<^>." + + + - id: 2d.pattern.modify + text: "Modifying this image after calling the createPattern() method *must* not affect the pattern<^>." + - id: 2d.pattern.missing + text: "If the empty string is specified, repeat *must* be assumed<^>." + - id: 2d.pattern.unrecognised + text: "If an unrecognized value is given, then the user agent *must* raise a SYNTAX_ERR exception<^>." + - id: 2d.pattern.exact + text: "User agents *must* recognize the four values described above exactly (e.g. they must not do case folding)<^>." + - id: 2d.pattern.return + text: "the method *must* return a CanvasPattern object suitably initialized<^>." + - id: 2d.pattern.IDL + text: "CanvasPattern createPattern(in HTMLImageElement image, in DOMString repetition);<...>CanvasPattern createPattern(in HTMLCanvasElement image, in DOMString repetition);<...>CanvasPattern createPattern(in HTMLVideoElement image, in DOMString repetition);<^>" + - id: 2d.pattern.incomplete.image + text: "If the image argument is an HTMLImageElement object that is not fully decodable<^><...> then the implementation *must* return null." + - id: 2d.pattern.incomplete.video + previously: [ 6, "createPattern" ] + text: "If the image argument is <...> an HTMLVideoElement object whose readyState attribute is either HAVE_NOTHING or HAVE_METADATA<^>, then the implementation *must* return null." + - id: 2d.pattern.zerocanvas + previously: [ 10, "createPattern" ] + text: "If the image argument is an HTMLCanvasElement object with either a horizontal dimension or a vertical dimension equal to zero, then the implementation *must* raise an INVALID_STATE_ERR exception<^>." + - id: 2d.pattern.painting + text: "Patterns *must* be painted so that the top left of the first image is anchored at the origin of the coordinate space, and images are then repeated horizontally to the left and right (if the repeat-x string was specified) or vertically up and down (if the repeat-y string was specified) or in all four directions all over the canvas (if the repeat string was specified)<^>." + - id: 2d.pattern.unscaled + text: "The images are not scaled by this process; one CSS pixel of the image *must* be painted on one coordinate space unit<^>." + - id: 2d.pattern.extent + text: "patterns *must* actually be painted only where the stroking or filling effect requires that they be drawn<^>, and are affected by the current transformation matrix." + - id: 2d.pattern.animated.image + text: "When the createPattern() method is passed an animated image as its image argument, the user agent must use the poster frame of the animation, or, if there is no poster frame, the first frame of the animation<^>." + - id: 2d.pattern.animated.video + previously: [ 4, "createPattern" ] + text: "When the image argument is an HTMLVideoElement, then the frame at the current playback position *must* be used as the source image<^>," + - id: 2d.pattern.video.size + previously: [ 4, "createPattern" ] + text: "When the image argument is an HTMLVideoElement, <...> the source image's dimensions *must* be the intrinsic width and intrinsic height of the media resource (i.e. after any aspect-ratio correction has been applied)<^>." + + + - id: 2d.lineWidth + text: "The lineWidth attribute gives the width of lines, in coordinate space units<^>." + - id: 2d.lineWidth.get + text: "The lineWidth attribute <...>. On getting, it *must* return the current value<^>." + - id: 2d.lineWidth.invalid + text: "The lineWidth attribute <...>. On setting, zero, negative, infinite, and NaN values *must* be ignored, leaving the value unchanged<^>;" + - id: 2d.lineWidth.set + text: "The lineWidth attribute <...>. On setting, <...> other values *must* change the current value to the new value<^>." + - id: 2d.lineWidth.default + text: "the lineWidth attribute *must* initially have the value 1.0<^>." + - id: 2d.lineCap.end + text: "The lineCap attribute defines the type of endings that UAs will place on the end of lines<^>." + - id: 2d.lineCap.butt + text: "The butt value means that the end of each line has a flat edge perpendicular to the direction of the line (and that no additional line cap is added)<^>." + - id: 2d.lineCap.round + text: "The round value means that a semi-circle with the diameter equal to the width of the line *must* then be added on to the end of the line<^>." + - id: 2d.lineCap.square + text: "The square value means that a rectangle with the length of the line width and the width of half the line width, placed flat against the edge perpendicular to the direction of the line, *must* be added at the end of each line<^>." + - id: 2d.lineCap.get + previously: [ 2, "The lineCap attribute" ] + text: "On getting, it *must* return the current value<^>." + - id: 2d.lineCap.set + text: "On setting, if the new value is one of the literal strings butt, round, and square, then the current value *must* be changed to the new value<^>;" + - id: 2d.lineCap.invalid + text: "On setting, if the new value is one of the literal strings butt, round, and square, then <...>; other values *must* ignored, leaving the value unchanged<^>." + - id: 2d.lineCap.default + text: "When the context is created, the lineCap attribute *must* initially have the value butt<^>." + - id: 2d.lineJoin.get + previously: [ 2, "lineJoin" ] + text: "On getting, it *must* return the current value<^>." + - id: 2d.lineJoin.set + text: "On setting, if the new value is one of the literal strings bevel, round, and miter, then the current value *must* be changed to the new value<^>;" + - id: 2d.lineJoin.invalid + text: "On setting, if the new value is one of the literal strings bevel, round, and miter, then <...>; other values *must* be ignored, leaving the value unchanged<^>." + - id: 2d.lineJoin.default + text: "When the context is created, the lineJoin attribute *must* initially have the value miter<^>." + - id: 2d.lineJoin.joins + text: "A join exists at any point in a subpath shared by two consecutive lines<^>." + - id: 2d.lineJoin.joinclosed + text: "When a subpath is closed, then a join also exists at its first point (equivalent to its last point) connecting the first and last lines in the subpath<^>." + - id: 2d.lineJoin.common + text: "A filled triangle connecting these two opposite corners with a straight line, with the third point of the triangle being the join point, *must* be rendered at all joins<^>." + - id: 2d.lineJoin.round + text: "The round value means that a filled arc connecting the two aforementioned corners of the join, abutting (and not overlapping) the aforementioned triangle, with the diameter equal to the line width and the origin at the point of the join, *must* be rendered at joins<^>." + - id: 2d.lineJoin.bevel + text: "The bevel value means that this is all that is rendered at joins<^>." + - id: 2d.lineJoin.miter + text: "The miter value means that a second filled triangle *must* (if it can given the miter length) be rendered at the join, with one line being the line between the two aforementioned corners, abutting the first triangle, and the other two being continuations of the outside edges of the two joining lines, as long as required to intersect without going over the miter length<^>." + - id: 2d.lineJoin.miterLimit + text: "If the miter length would cause the miter limit ratio to be exceeded, this second triangle *must* not be rendered<^>." + - id: 2d.miterLimit.get + text: "The miter limit <...>. On getting, it *must* return the current value<^>." + - id: 2d.miterLimit.invalid + text: "The miter limit <...>. On setting, zero, negative, infinite, and NaN values *must* be ignored, leaving the value unchanged<^>;" + - id: 2d.miterLimit.set + text: "The miter limit <...>. On setting, <...>; other values *must* change the current value to the new value<^>." + - id: 2d.miterLimit.default + text: "When the context is created, the miterLimit attribute *must* initially have the value 10.0<^>." + + + - id: 2d.shadow.color.initial + text: "When the context is created, the shadowColor attribute initially *must* be fully-transparent black<^>." + - id: 2d.shadow.color.get + text: "On getting, the serialization of the color *must* be returned<^>." + - id: 2d.shadow.color.set + text: "On setting, the new value *must* be parsed as a CSS <color> value and the color assigned<^>." + - id: 2d.shadow.color.invalid + text: "If the value cannot be parsed as a CSS <color> value then it *must* be ignored, and the attribute must retain its previous value<^>." + - id: 2d.shadow.offset.initial + text: "When the context is created, the shadow offset attributes *must* initially have the value 0<^>." + - id: 2d.shadow.offset.get + text: "On getting, they *must* return their current value<^>." + - id: 2d.shadow.offset.set + text: "On setting, the attribute being set *must* be set to the new value<^>," + - id: 2d.shadow.offset.invalid + text: "On setting, <...> if the value is infinite or NaN, in which case the new value *must* be ignored<^>." + - id: 2d.shadow.blur.initial + text: "When the context is created, the shadowBlur attribute *must* initially have the value 0<^>." + - id: 2d.shadow.blur.get + text: "On getting, the attribute *must* return its current value<^>." + - id: 2d.shadow.blur.set + text: "On setting the attribute *must* be set to the new value<^>," + - id: 2d.shadow.blur.invalid + text: "On setting <...> if the value is negative, infinite or NaN, in which case the new value *must* be ignored<^>." + - id: 2d.shadow.enable + text: "Shadows are only drawn if the opacity component of the alpha component of the color of shadowColor is non-zero and either the shadowBlur is non-zero, or the shadowOffsetX is non-zero, or the shadowOffsetY is non-zero<^>." + - id: 2d.shadow.render + text: "When shadows are drawn, they *must* be rendered as follows<^>:" + + - id: 2d.rect.transform + text: "The current transformation matrix *must* be applied to the following four coordinates<^>," + - id: 2d.rect.closed + text: "the following four coordinates, which form the path that *must* then be closed to get the specified rectangle<^>:" + - id: 2d.clearRect + text: "The clearRect(x, y, w, h) method *must* clear the pixels in the specified rectangle that also intersect the current clipping region to a fully transparent black, erasing any previous image<^>." + - id: 2d.fillRect + text: "The fillRect(x, y, w, h) method *must* paint the specified rectangular area using the fillStyle<^>." + - id: 2d.strokeRect + text: "The strokeRect(x, y, w, h) method *must* stroke the specified rectangle's path using the strokeStyle, lineWidth, lineJoin, and (if appropriate) miterLimit attributes<^>." + + + - id: 2d.path.initial + text: "Initially, the context's path *must* have zero subpaths<^>." + - id: 2d.path.transformation + text: "The points and lines added to the path by these methods *must* be transformed according to the current transformation matrix as they are added<^>." + - id: 2d.path.beginPath + text: "The beginPath() method *must* empty the list of subpaths so that the context once again has zero subpaths<^>." + - id: 2d.path.moveTo + text: "The moveTo(x, y) method *must* create a new subpath with the specified point as its first (and only) point<^>." + - id: 2d.path.ensure + text: "When the user agent is to ensure there is a subpath for a coordinate (x, y), the user agent must check to see if the context has any subpaths, and if it does not, then the user agent *must* create a new subpath with the point (x, y) as its first (and only) point, as if the moveTo() method had been called<^>." + - id: 2d.path.closePath.empty + text: "The closePath() method *must* do nothing if the context has no subpaths<^>." + - id: 2d.path.closePath.nonempty + text: "The closePath() method <...> *must* mark the last subpath as closed, create a new subpath whose first point is the same as the previous subpath's first point, and finally add this new subpath to the path<^>." + - id: 2d.path.lineTo.empty + text: "The lineTo(x, y) method *must* ensure there is a subpath for (x, y) if the context has no subpaths<^>." + - id: 2d.path.lineTo.nonempty + text: "The lineTo(x, y) method <...> *must* connect the last point in the subpath to the given point (x, y) using a straight line, and must then add the given point (x, y) to the subpath<^>." + - id: 2d.path.quadratic.empty + text: "The quadraticCurveTo(cpx, cpy, x, y) method *must* ensure there is a subpath for (cpx, cpy)<^>," + - id: 2d.path.quadratic.nonempty + text: "The quadraticCurveTo(cpx, cpy, x, y) method <...> *must* connect the last point in the subpath to the given point (x, y) using a quadratic B<...>zier curve with control point (cpx, cpy), and must then add the given point (x, y) to the subpath<^>." + - id: 2d.path.bezier.empty + text: "The bezierCurveTo(cp1x, cp1y, cp2x, cp2y, x, y) method *must* ensure there is a subpath for (cp1x, cp1y)<^>," + - id: 2d.path.bezier.nonempty + text: "The bezierCurveTo(cp1x, cp1y, cp2x, cp2y, x, y) method <...> *must* connect the last point in the subpath to the given point (x, y) using a cubic B<...>zier curve with control points (cp1x, cp1y) and (cp2x, cp2y). Then, it must add the point (x, y) to the subpath<^>." + - id: 2d.path.arcTo.empty + text: "The arcTo(x1, y1, x2, y2, radius) method *must* first ensure there is a subpath for (x1, y1)<^>." + - id: 2d.path.arcTo.negative + previously: [ 2, "arcTo(" ] + text: "Negative values for radius *must* cause the implementation to raise an INDEX_SIZE_ERR exception<^>." + - id: 2d.path.arcTo.coincide.01 + text: "If the point (x0, y0) is equal to the point (x1, y1)<^>, or if the point (x1, y1) is equal to the point (x2, y2), or if the radius radius is zero, then the method *must* add the point (x1, y1) to the subpath, and connect that point to the previous point (x0, y0) by a straight line." + - id: 2d.path.arcTo.coincide.12 + text: "If the point (x0, y0) is equal to the point (x1, y1), or if the point (x1, y1) is equal to the point (x2, y2)<^>, or if the radius radius is zero, then the method *must* add the point (x1, y1) to the subpath, and connect that point to the previous point (x0, y0) by a straight line." + - id: 2d.path.arcTo.zeroradius + text: "If the point (x0, y0) is equal to the point (x1, y1), or if the point (x1, y1) is equal to the point (x2, y2), or if the radius radius is zero<^>, then the method *must* add the point (x1, y1) to the subpath, and connect that point to the previous point (x0, y0) by a straight line." + - id: 2d.path.arcTo.collinear + text: "if the points (x0, y0), (x1, y1), and (x2, y2) all lie on a single straight line, then the method *must* add the point (x1, y1) to the subpath, and connect that point to the previous point (x0, y0) by a straight line<^>." + - id: 2d.path.arcTo.shape + text: "The method *must* connect the point (x0, y0) to the start tangent point by a straight line, adding the start tangent point to the subpath, and then must connect the start tangent point to the end tangent point by The Arc, adding the end tangent point to the subpath<^>." + + - id: 2d.path.arc.nonempty + text: "If the context has any subpaths, then the method *must* add a straight line from the last point in the subpath to the start point of the arc<^>." + - id: 2d.path.arc.draw + text: "it *must* draw the arc between the start point of the arc and the end point of the arc, and add the start and end points of the arc to the subpath<^>." + - id: 2d.path.arc.zero + text: "If the two points are the same, or if the radius is zero<^>, then the arc is defined as being of zero length in both directions." + - id: 2d.path.arc.negative + previously: [ 2, "anticlockwise" ] + text: "Negative values for radius *must* cause the implementation to raise an INDEX_SIZE_ERR exception<^>." + + - id: 2d.path.rect.subpath + text: "The rect(x, y, w, h) method *must* create a new subpath containing just the four points (x, y), (x+w, y), (x+w, y+h), (x, y+h), with those four points connected by straight lines<^>" + - id: 2d.path.rect.closed + text: "The rect(x, y, w, h) method <...> *must* then mark the subpath as closed<^>." + - id: 2d.path.rect.newsubpath + text: "The rect(x, y, w, h) method <...> *must* then create a new subpath with the point (x, y) as the only point in the subpath<^>." + + - id: 2d.path.fill.basic + text: "The fill() method *must* fill all the subpaths of the current path, using fillStyle, and using the non-zero winding number rule<^>." + - id: 2d.path.fill.closed + text: "Open subpaths *must* be implicitly closed when being filled (without affecting the actual subpaths)<^>." + - id: 2d.path.stroke.basic + text: "The stroke() method *must* calculate the strokes of all the subpaths of the current path, using the lineWidth, lineCap, lineJoin, and (if appropriate) miterLimit attributes, and then fill the combined stroke area using the strokeStyle attribute<^>." + - id: 2d.path.unaffected + text: "Paths, when filled or stroked, *must* be painted without affecting the current path<^>" + - id: 2d.path.subjected + text: "Paths, when filled or stroked, <...> *must* be subject to shadow effects, global alpha, the clipping region, and global composition operators<^>." + + - id: 2d.path.stroke.prune + text: "Zero-length line segments *must* be pruned before stroking a path<^>." + - id: 2d.path.stroke.empty + text: "Empty subpaths *must* be ignored<^>." + + - id: 2d.path.clip.basic + text: "The clip() method *must* create a new clipping region by calculating the intersection of the current clipping region and the area described by the current path, using the non-zero winding number rule<^>." + - id: 2d.path.clip.closed + text: "Open subpaths *must* be implicitly closed when computing the clipping region, without affecting the actual subpaths<^>." + - id: 2d.path.clip.initial + text: "When the context is initialized, the clipping region *must* be set to the rectangle with the top left corner at (0,0) and the width and height of the coordinate space<^>." + - id: 2d.path.isPointInPath + text: "The isPointInPath(x, y) method *must* return true if the point given by the x and y coordinates passed to the method, when treated as coordinates in the canvas coordinate space unaffected by the current transformation, is inside the current path as determined by the non-zero winding number rule; and must return false otherwise<^>." + - id: 2d.path.isPointInPath.edge + text: "The isPointInPath(x, y) method *must* return true if <...>. Points on the path itself are considered to be inside the path<^>." + - id: 2d.path.isPointInPath.nonfinite + text: "If either of the arguments is infinite or NaN, then the method *must* return false<^>." + + # TODO: Focus management + + - id: 2d.text.font.parse + text: "The font IDL attribute, on setting, *must* be parsed the same way as the 'font' property of CSS (but without supporting property-independent style sheet syntax like 'inherit')<^>," + - id: 2d.text.font.lineheight + text: "The font IDL attribute, on setting, *must* be parsed <...> with the 'line-height' component forced to 'normal'<^>," + - id: 2d.text.font.fontsize + text: "The font IDL attribute, on setting, *must* be parsed <...> with the 'font-size' component converted to CSS pixels<^>," + - id: 2d.text.font.systemfonts + text: "The font IDL attribute, on setting, *must* be parsed <...> with system fonts being computed to explicit values<^>." + - id: 2d.text.font.invalid + text: "If the new value is syntactically incorrect (including using property-independent style sheet syntax like 'inherit' or 'initial'), then it *must* be ignored, without assigning a new font value<^>." + + - id: 2d.text.font.fontface + text: "Font names must be interpreted in the context of the canvas element's stylesheets; any fonts embedded using @font-face *must* therefore be available once they are loaded<^>." + - id: 2d.text.font.notfullyloaded + text: "If a font is referenced before it is fully loaded, then it *must* be treated as if it was an unknown font, falling back to another as described by the relevant CSS specifications<^>." + - id: 2d.text.font.get + text: "On getting, the font attribute *must* return the serialized form of the current font of the context (with no 'line-height' component)<^>." + - id: 2d.text.font.default + text: "When the context is created, the font of the context *must* be set to 10px sans-serif<^>." + - id: 2d.text.font.size + text: "When the 'font-size' component is set to lengths using percentages, 'em' or 'ex' units, or the 'larger' or 'smaller' keywords, these *must* be interpreted relative to the computed value of the 'font-size' property of the corresponding canvas element at the time that the attribute is set<^>." + - id: 2d.text.font.weight + text: "When the 'font-weight' component is set to the relative values 'bolder' and 'lighter', these *must* be interpreted relative to the computed value of the 'font-weight' property of the corresponding canvas element at the time that the attribute is set<^>." + - id: 2d.text.font.undefined + text: "If the computed values are undefined for a particular case (e.g. because the canvas element is not in a Document), then the relative keywords *must* be interpreted relative to the normal-weight 10px sans-serif default<^>." + - id: 2d.text.align.get + text: "The textAlign IDL attribute, on getting, *must* return the current value<^>." + - id: 2d.text.align.set + text: "On setting, if the value is one of start, end, left, right, or center, then the value *must* be changed to the new value<^>." + - id: 2d.text.align.invalid + text: "The textAlign IDL attribute, <...> Otherwise, the new value *must* be ignored<^>." + - id: 2d.text.align.default + text: "When the context is created, the textAlign attribute *must* initially have the value start<^>." + - id: 2d.text.baseline.get + text: "The textBaseline IDL attribute, on getting, *must* return the current value<^>." + - id: 2d.text.baseline.set + text: "On setting, if the value is one of top, hanging, middle, alphabetic, ideographic, or bottom, then the value *must* be changed to the new value<^>." + - id: 2d.text.baseline.invalid + text: "The textBaseline IDL attribute, <...> Otherwise, the new value *must* be ignored<^>." + - id: 2d.text.baseline.default + text: "When the context is created, the textBaseline attribute *must* initially have the value alphabetic<^>." + + - id: 2d.text.draw + text: "The fillText() and strokeText() methods <...> when the methods are called, the user agent *must* run the following steps<^>:" + - id: 2d.text.draw.spaces + text: "Replace all the space characters in text with U+0020 SPACE characters<^>." + - id: 2d.text.draw.direction + text: "the 'direction' property of the inline box set to the directionality of the canvas element<^>," + - id: 2d.text.draw.maxwidth + text: "If the maxWidth argument was specified and the hypothetical width of the inline box in the hypothetical line box is greater than maxWidth CSS pixels, then change font to have a more condensed font (if one is available or if a reasonably readable one can be synthesized by applying a horizontal scale factor to the font) or a smaller font, and return to the previous step<^>." + - id: 2d.text.align.left + text: "Let the anchor point's horizontal position be the left edge of the inline box<^>." + - id: 2d.text.align.right + text: "Let the anchor point's horizontal position be the right edge of the inline box<^>." + - id: 2d.text.align.center + text: "Let the anchor point's horizontal position be half way between the left and right edges of the inline box<^>." + + - id: 2d.text.baseline.top + text: "Let the anchor point's vertical position be the top of the em box of the first available font of the inline box<^>." + - id: 2d.text.baseline.hanging + text: "Let the anchor point's vertical position be the hanging baseline of the first available font of the inline box<^>." + - id: 2d.text.baseline.middle + text: "Let the anchor point's vertical position be half way between the bottom and the top of the em box of the first available font of the inline box<^>." + - id: 2d.text.baseline.alphabetic + text: "Let the anchor point's vertical position be the alphabetic baseline of the first available font of the inline box<^>." + - id: 2d.text.baseline.ideographic + text: "Let the anchor point's vertical position be the ideographic baseline of the first available font of the inline box<^>." + - id: 2d.text.baseline.bottom + text: "Let the anchor point's vertical position be the bottom of the em box of the first available font of the inline box<^>." + + - id: 2d.text.draw.fill + text: "For fillText() fillStyle must be applied to the glyphs and strokeStyle *must* be ignored<^>." + - id: 2d.text.draw.stroke + text: "For strokeText() the reverse holds and strokeStyle must be applied to the glyph outlines and fillStyle *must* be ignored<^>." + - id: 2d.text.measure.spaces + text: "When the method is invoked, the user agent *must* replace all the space characters in text with U+0020 SPACE characters<^>," + - id: 2d.text.measure + text: "When the method is invoked, the user agent <...> *must* form a hypothetical infinitely wide CSS line box containing a single inline box containing the text text, with all the properties at their initial values except the 'white-space' property of the inline element set to 'pre' and the 'font' property of the inline element set to the current font of the context as given by the font attribute, and must then return a new TextMetrics object with its width attribute set to the width of that inline box, in CSS pixels<^>." + + - id: 2d.drawImage.defaultdest + text: "If not specified, the dw and dh arguments *must* default to the values of sw and sh, interpreted such that one CSS pixel in the image is treated as one unit in the canvas coordinate space<^>." + - id: 2d.drawImage.defaultsource + text: "If the sx, sy, sw, and sh arguments are omitted, they *must* default to 0, 0, the image's intrinsic width in image pixels, and the image's intrinsic height in image pixels, respectively<^>." + - id: 2d.drawImage.IDL + text: "void drawImage(in HTMLVideoElement image, in double sx, in double sy, in double sw, in double sh, in double dx, in double dy, in double dw, in double dh);<^>" + - id: 2d.drawImage.incomplete.image + text: "If the image argument is an HTMLImageElement object that is not fully decodable<^><...> then the implementation *must* return without drawing anything." + - id: 2d.drawImage.incomplete.video + previously: [ 6, "dw and dh" ] + text: "If the image argument is <...> an HTMLVideoElement object whose readyState attribute is either HAVE_NOTHING or HAVE_METADATA<^>, then the implementation *must* return without drawing anything." + - id: 2d.drawImage.zerocanvas + previously: [ 10, "dw and dh" ] + text: "If the image argument is an HTMLCanvasElement object with either a horizontal dimension or a vertical dimension equal to zero, then the implementation *must* raise an INVALID_STATE_ERR exception<^>." + - id: 2d.drawImage.zerosource + text: "If one of the sw or sh arguments is zero<^>, the implementation *must* raise an INDEX_SIZE_ERR exception." + - id: 2d.drawImage.paint + text: "When drawImage() is invoked, the region of the image specified by the source rectangle *must* be painted on the region of the canvas specified by the destination rectangle<^>, after applying the current transformation matrix to the points of the destination rectangle." + - id: 2d.drawImage.original + text: "The original image data of the source image *must* be used, not the image as it is rendered (e.g. width and height attributes on the source element have no effect)<^>." + - id: 2d.drawImage.direction + text: "The image data *must* be processed in the original direction, even if the dimensions given are negative<^>." + - id: 2d.drawImage.self + text: "When a canvas is drawn onto itself, the drawing model requires the source to be copied before the image is drawn back onto the canvas, so it is possible to copy parts of a canvas onto overlapping parts of itself<^>." + - id: 2d.drawImage.animated.image + text: "When the drawImage() method is passed an animated image as its image argument, the user agent *must* use the poster frame of the animation, or, if there is no poster frame, the first frame of the animation<^>." + - id: 2d.drawImage.animated.video + previously: [ 4, "drawImage" ] + text: "When the image argument is an HTMLVideoElement, then the frame at the current playback position *must* be used as the source image<^>," + - id: 2d.drawImage.video.size + previously: [ 4, "drawImage" ] + text: "When the image argument is an HTMLVideoElement, <...> the source image's dimensions *must* be the intrinsic width and intrinsic height of the media resource (i.e. after any aspect-ratio correction has been applied)<^>." + - id: 2d.drawImage.unaffect + text: "Images are painted without affecting the current path<^>" + - id: 2d.drawImage.subject + text: "Images are painted without affecting the current path, and are subject to shadow effects, global alpha, the clipping region, and global composition operators<^>." + + + - id: 2d.imageData.create2.object + text: "When the method is invoked with two arguments sw and sh, it *must* return an ImageData object<^>" + - id: 2d.imageData.create2.size + text: "When the method is invoked with two arguments sw and sh, it *must* return an ImageData object representing a rectangle with a width in CSS pixels equal to the absolute magnitude of sw and a height in CSS pixels equal to the absolute magnitude of sh<^>." + - id: 2d.imageData.create1.object + text: "When invoked with a single imagedata argument, it *must* return an ImageData object<^>" + - id: 2d.imageData.create1.size + text: "When invoked with a single imagedata argument, it *must* return an ImageData object representing a rectangle with the same dimensions as the ImageData object passed as the argument<^>." + - id: 2d.imageData.create.initial + text: "The ImageData object returned must be filled with transparent black<^>." + + - id: 2d.imageData.get.object + text: "The getImageData(sx, sy, sw, sh) method *must* return an ImageData object<^>" + - id: 2d.imageData.get.basic + text: "The getImageData(sx, sy, sw, sh) method *must* return an ImageData object representing the underlying pixel data for the area of the canvas denoted by the rectangle whose corners are the four points (sx, sy), (sx+sw, sy), (sx+sw, sy+sh), (sx, sy+sh), in canvas coordinate space units<^>." + - id: 2d.imageData.get.outside + text: "Pixels outside the canvas *must* be returned as transparent black<^>." + - id: 2d.imageData.get.premul + text: "Pixels *must* be returned as non-premultiplied alpha values<^>." + + - id: 2d.imageData.getcreate.nonfinite + text: "If any of the arguments to createImageData() or getImageData() are infinite or NaN<^>, the method *must* instead raise a NOT_SUPPORTED_ERR exception." + - id: 2d.imageData.create.null + text: "ImageData createImageData(in ImageData imagedata);<^>" + - id: 2d.imageData.getcreate.zero + text: "If either the sw or sh arguments are zero, the method *must* instead raise an INDEX_SIZE_ERR exception<^>." + + - id: 2d.imageData.initial + text: "ImageData objects *must* be initialized so that their width attribute is set to w, the number of physical device pixels per row in the image data, their height attribute is set to h, the number of rows in the image data, and their data attribute is initialized to a CanvasPixelArray object holding the image data<^>." + - id: 2d.imageData.one + text: "At least one pixel's worth of image data *must* be returned<^>." + - id: 2d.pixelarray.order + text: "The data *must* be represented in left-to-right order, row by row top to bottom, starting with the top left, with each pixel's red, green, blue, and alpha components being given in that order for each pixel<^>." + - id: 2d.pixelarray.range + text: "Each component of each device pixel represented in this array *must* be in the range 0..255, representing the 8 bit value for that component<^>." + - id: 2d.pixelarray.indexes + text: "The components *must* be assigned consecutive indices starting with 0 for the top left pixel's red component<^>." + - id: 2d.pixelarray.length + text: "The length attribute of a CanvasPixelArray object *must* return this number<^>." + - id: 2d.pixelarray.retrieve + text: "To determine the value of an indexed property index, the user agent *must* return the value of the indexth component in the array<^>." + - id: 2d.pixelarray.modify + text: "To set the value of an existing indexed property index to value value, the value of the indexth component in the array *must* be set to value<^>." + + - id: 2d.imageData.put.nonfinite + text: "If any of the arguments to the method are infinite or NaN, the method *must* raise a NOT_SUPPORTED_ERR exception<^>." + - id: 2d.imageData.put.wrongtype + text: "void putImageData(in ImageData imagedata, in double dx, in double dy);<...>void putImageData(in ImageData imagedata, in double dx, in double dy, in double dirtyX, in double dirtyY, in double dirtyWidth, in double dirtyHeight);<^>" + - id: 2d.imageData.put.3arg + text: "When the last four arguments are omitted, they *must* be assumed to have the values 0, 0, the width member of the imagedata structure, and the height member of the imagedata structure, respectively<^>." + - id: 2d.imageData.put.normal + text: "When invoked with arguments that do not, per the last few paragraphs, cause an exception to be raised, the putImageData() method *must* act as follows<^>:" + + - id: 2d.imageData.unchanged + text: "the following *must* result in no visible changes to the rendering<^>:" + - id: 2d.imageData.createround + text: "...*must* return ImageData objects with the same dimensions, for any value of w and h<^>." + - id: 2d.imageData.unaffected + text: "The current path, transformation matrix, shadow attributes, global alpha, the clipping region, and global composition operator *must* not affect the getImageData() and putImageData() methods<^>." + + - id: 2d.drawingmodel + text: "When a shape or image is painted, user agents *must* follow these steps, in the order given (or act as if they do)<^>:" + + - id: 2d.colorspace.correction + text: "The canvas APIs *must* perform color correction at only two points: when rendering images with their own gamma correction and color space information onto the canvas, to convert the image to the color space used by the canvas (e.g. using the 2D Context's drawImage() method with an HTMLImageElement object)<^>," + - id: 2d.colorspace.toDataURL.info + text: "The toDataURL() method *must* not include color space information in the resource returned<^>." + - id: 2d.colorspace.toDataURL.equal + text: "Where the output format allows it, the color of pixels in resources created by toDataURL() *must* match those returned by the getImageData() method<^>." + - id: 2d.colorspace.match + text: "In user agents that support CSS, the color space used by a canvas element *must* match the color space used for processing any colors for that element in CSS<^>." + - id: 2d.colorspace.img.equal + text: "The gamma correction and color space information of images *must* be handled in such a way that an image rendered directly using an img element would use the same colors as one painted on a canvas element that is then itself rendered<^>." + - id: 2d.colorspace.img.noinfo + text: "Furthermore, the rendering of images that have no color correction information (such as those returned by the toDataURL() method) *must* be rendered with no color correction<^>." + + - id: security.start + text: "All canvas elements *must* start with their origin-clean set to true<^>." + - id: security.drawImage.image + keyword: must + text: "The element's 2D context's drawImage() method is called with an HTMLImageElement or an HTMLVideoElement whose origin is not the same as that of the Document object that owns the canvas element<^>." + - id: security.drawImage.canvas + keyword: must + text: "The element's 2D context's drawImage() method is called with an HTMLCanvasElement whose origin-clean flag is false<^>." + - id: security.fillStyle.image + keyword: must + text: "The element's 2D context's fillStyle attribute is set to a CanvasPattern object that was created from an HTMLImageElement<^> or an HTMLVideoElement whose origin was not the same as that of the Document object that owns the canvas element when the pattern was created." + - id: security.fillStyle.video + keyword: must + text: "The element's 2D context's fillStyle attribute is set to a CanvasPattern object that was created from an HTMLImageElement or an HTMLVideoElement<^> whose origin was not the same as that of the Document object that owns the canvas element when the pattern was created." + - id: security.fillStyle.canvas + keyword: must + text: "The element's 2D context's fillStyle attribute is set to a CanvasPattern object that was created from an HTMLCanvasElement whose origin-clean flag was false when the pattern was created<^>." + - id: security.strokeStyle.image + keyword: must + text: "The element's 2D context's strokeStyle attribute is set to a CanvasPattern object that was created from an HTMLImageElement<^> or an HTMLVideoElement whose origin was not the same as that of the Document object that owns the canvas element when the pattern was created." + - id: security.strokeStyle.video + keyword: must + text: "The element's 2D context's strokeStyle attribute is set to a CanvasPattern object that was created from an HTMLImageElement or an HTMLVideoElement<^> whose origin was not the same as that of the Document object that owns the canvas element when the pattern was created." + - id: security.strokeStyle.canvas + keyword: must + text: "The element's 2D context's strokeStyle attribute is set to a CanvasPattern object that was created from an HTMLCanvasElement whose origin-clean flag was false when the pattern was created<^>." + - id: security.toDataURL + text: "Whenever the toDataURL() method of a canvas element whose origin-clean flag is set to false is called, the method *must* raise a SECURITY_ERR exception<^>." + - id: security.getImageData + text: "Whenever the getImageData() method of the 2D context of a canvas element whose origin-clean flag is set to false is called with otherwise correct arguments, the method *must* raise a SECURITY_ERR exception<^>." diff --git a/testing/web-platform/tests/2dcontext/tools/specextract.py b/testing/web-platform/tests/2dcontext/tools/specextract.py new file mode 100644 index 000000000..042c0bd84 --- /dev/null +++ b/testing/web-platform/tests/2dcontext/tools/specextract.py @@ -0,0 +1,57 @@ +import html5lib +import html5lib.treebuilders.dom + +# Expected use: +# curl --compressed http://www.whatwg.org/specs/web-apps/current-work/ >current-work +# python specextract.py +# +# Generates current-work-canvas.xhtml, for use by gentest.py to create the annotated spec document + +def extract(): + parser = html5lib.html5parser.HTMLParser(tree=html5lib.treebuilders.dom.TreeBuilder) + doc = parser.parse(open('current-work', "r"), encoding='utf-8') + + head = doc.getElementsByTagName('head')[0] + for n in head.childNodes: + if n.tagName == 'script': + head.removeChild(n) + + header = doc.getElementsByTagName('header')[0] + #thecanvas = doc.getElementById('the-canvas') # doesn't work (?!) + thecanvas = [ n for n in doc.getElementsByTagName('h4') if n.getAttribute('id') == 'the-canvas-element' ][0] + + keep = [header, thecanvas] + node = thecanvas.nextSibling + while node.nodeName != 'h4': + keep.append(node) + node = node.nextSibling + p = thecanvas.parentNode + for n in p.childNodes[:]: + if n not in keep: + p.removeChild(n) + + for n in header.childNodes[3:-4]: + header.removeChild(n) + + def make_absolute(uri): + if uri.startswith('data:'): + return uri + elif uri[0] == '/': + return 'http://www.whatwg.org' + uri + else: + return 'http://www.whatwg.org/specs/web-apps/current-work/' + uri + + # Fix the stylesheet, icon and image references + for e in doc.getElementsByTagName('link'): + e.setAttribute('href', make_absolute(e.getAttribute('href'))) + for img in doc.getElementsByTagName('img'): + img.setAttribute('src', make_absolute(img.getAttribute('src'))) + + # Convert to XHTML, because it's quicker to re-parse than HTML5 + doc.documentElement.setAttribute('xmlns', 'http://www.w3.org/1999/xhtml') + doc.documentElement.setAttribute('xml:lang', doc.documentElement.getAttribute('lang')) + doc.removeChild(doc.firstChild) # remove the DOCTYPE + + open('current-work-canvas.xhtml', 'w').write(doc.toxml(encoding = 'UTF-8')) + +extract() diff --git a/testing/web-platform/tests/2dcontext/tools/templates.yaml b/testing/web-platform/tests/2dcontext/tools/templates.yaml new file mode 100644 index 000000000..a67f3aad4 --- /dev/null +++ b/testing/web-platform/tests/2dcontext/tools/templates.yaml @@ -0,0 +1,378 @@ +# Copyright (c) 2010 Philip Taylor +# Released under the BSD license and W3C Test Suite License: see LICENSE.txt + +framed: | + <!DOCTYPE html> + <title>Canvas test: %(name)s</title> + <script src="../tests.js"></script> + <link rel="stylesheet" href="../tests.css"> + %(fonts)s<body class="framed show_output"> + <h1> + <a href="%(name)s.html" target="_parent">%(name_wrapped)s</a> + </h1> + <p><a href="#" id="show_output" onclick="document.body.className += ' show_output'; return false">[show output]</a> + %(fonthack)s<p class="output">Actual output:</p> + <canvas id="c" class="output" %(canvas)s>%(fallback)s</canvas> + %(expected)s + <ul id="d"></ul> + <script> + _addTest(function(canvas, ctx) { + + %(code)s + + }); + </script> + %(images)s + +standalone: | + <!DOCTYPE html> + <title>Canvas test: %(name)s</title> + <script src="../tests.js"></script> + <link rel="stylesheet" href="../tests.css"> + <link rel="prev" href="%(prev)s.html" title="%(prev)s"> + <link rel="next" href="%(next)s.html" title="%(next)s"> + %(fonts)s<body class="show_output"> + <p> + <a href="%(prev)s.html" accesskey="p" title="[p] %(prev)s"><</a> + <a href="index.html">[index]</a> + <a href="%(next)s.html" accesskey="n" title="[n] %(next)s">></a> + <h1>%(backrefs)s</h1> + <p class="desc">%(desc)s</p> + <div class="refs">References: + <ul> + %(refs)s + </ul> + </div> + %(notes)s + %(fonthack)s<p class="output">Actual output:</p> + <canvas id="c" class="output" %(canvas)s>%(fallback)s</canvas> + %(expected)s + <ul id="d"></ul> + <script> + _addTest(function(canvas, ctx) { + + %(code)s + + }); + </script> + %(images)s + +minimal: | + <!DOCTYPE html> + <html class="minimal"> + <title>Canvas test: %(name)s</title> + <script src="../tests.js"></script> + <link rel="stylesheet" href="../tests.css"> + <link rel="prev" href="minimal.%(prev)s.html" title="%(prev)s"> + <link rel="next" href="minimal.%(next)s.html" title="%(next)s"> + %(fonts)s<body> + <p id="passtext">Pass</p> + <p id="failtext">Fail</p> + <!-- TODO: handle "script did not run" case --> + %(fonthack)s<p class="output">These images should be identical:</p> + <canvas id="c" class="output" %(canvas)s>%(fallback)s</canvas> + %(expected)s + <ul id="d"></ul> + <script> + _addTest(function(canvas, ctx) { + + %(code)s + + }); + </script> + %(images)s + +w3c: | + <!DOCTYPE html> + <!-- DO NOT EDIT! This test has been generated by tools/gentest.py. --> + <title>Canvas test: %(name)s</title> + <script src="/resources/testharness.js"></script> + <script src="/resources/testharnessreport.js"></script> + <script src="/common/canvas-tests.js"></script> + <link rel="stylesheet" href="/common/canvas-tests.css"> + %(fonts)s<body class="show_output"> + + <h1>%(name)s</h1> + <p class="desc">%(desc)s</p> + + %(notes)s + %(fonthack)s<p class="output">Actual output:</p> + <canvas id="c" class="output" %(canvas)s>%(fallback)s</canvas> + %(expected)s + <ul id="d"></ul> + <script> + var t = async_test("%(escaped_desc)s"); + _addTest(function(canvas, ctx) { + + %(code)s + + }); + </script> + %(scripts)s%(images)s + +mochitest: | + <!DOCTYPE HTML> + <title>%(mochi_name_fn)s</title> + %(mochi_desc)s<script src="/MochiKit/MochiKit.js"></script> + <script src="/tests/SimpleTest/SimpleTest.js"></script> + <link rel="stylesheet" href="/tests/SimpleTest/test.css"> + %(fonts)s<body><!-- [[[ test_%(mochi_name)s.html ]]] --> + + <p>Canvas test: %(mochi_name)s</p> + %(mochi_desc)s%(fonthack)s<canvas id="c" %(canvas)s>%(fallback)s</canvas> + <script> + + function %(mochi_name_fn)s() { + + var canvas = document.getElementById('c'); + var ctx = canvas.getContext('2d'); + + %(mochi_code)s + + } + </script> + %(mochi_images)s + +mochitest.isPixel: | + function isPixel(ctx, x,y, r,g,b,a, pos, colour, d) { + var pixel = ctx.getImageData(x, y, 1, 1); + var pr = pixel.data[0], + pg = pixel.data[1], + pb = pixel.data[2], + pa = pixel.data[3]; + ok(r-d <= pr && pr <= r+d && + g-d <= pg && pg <= g+d && + b-d <= pb && pb <= b+d && + a-d <= pa && pa <= a+d, + "pixel "+pos+" is "+pr+","+pg+","+pb+","+pa+"; expected "+colour+" +/- "+d); + } + +mochitest.todo_isPixel: | + function todo_isPixel(ctx, x,y, r,g,b,a, pos, colour, d) { + var pixel = ctx.getImageData(x, y, 1, 1); + var pr = pixel.data[0], + pg = pixel.data[1], + pb = pixel.data[2], + pa = pixel.data[3]; + todo(r-d <= pr && pr <= r+d && + g-d <= pg && pg <= g+d && + b-d <= pb && pb <= b+d && + a-d <= pa && pa <= a+d, + "pixel "+pos+" is "+pr+","+pg+","+pb+","+pa+"; expected "+colour+" +/- "+d); + } + +mochitest.deferTest: | + function deferTest() { + _deferred = true; + } + +mochitest.wrapFunction: | + function wrapFunction(f) { + return function () { + f.apply(null, arguments); + SimpleTest.finish(); + } + } + +mochitest.exception: | + var _thrown_outer = false; + try { + + %s + } catch (e) { + _thrown_outer = true; + } + todo(!_thrown_outer, 'should not throw exception'); + +mochitest.Makefile: | + # + # ***** BEGIN LICENSE BLOCK ***** + # Version: MPL 1.1/GPL 2.0/LGPL 2.1 + # + # The contents of this file are subject to the Mozilla Public License Version + # 1.1 (the "License"); you may not use this file except in compliance with + # the License. You may obtain a copy of the License at + # http://www.mozilla.org/MPL/ + # + # Software distributed under the License is distributed on an "AS IS" basis, + # WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + # for the specific language governing rights and limitations under the + # License. + # + # The Original Code is mozilla.org code. + # + # The Initial Developer of the Original Code is + # Mozilla Corporation. + # Portions created by the Initial Developer are Copyright (C) 2007 + # the Initial Developer. All Rights Reserved. + # + # Contributor(s): + # Philip Taylor <philip.taylor@cl.cam.ac.uk> + # + # Alternatively, the contents of this file may be used under the terms of + # either of the GNU General Public License Version 2 or later (the "GPL"), + # or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + # in which case the provisions of the GPL or the LGPL are applicable instead + # of those above. If you wish to allow use of your version of this file only + # under the terms of either the GPL or the LGPL, and not to allow others to + # use your version of this file under the terms of the MPL, indicate your + # decision by deleting the provisions above and replace them with the notice + # and other provisions required by the GPL or the LGPL. If you do not delete + # the provisions above, a recipient may use your version of this file under + # the terms of any one of the MPL, the GPL or the LGPL. + # + # ***** END LICENSE BLOCK ***** + + DEPTH = ../../.. + topsrcdir = @top_srcdir@ + srcdir = @srcdir@ + VPATH = @srcdir@ + relativesrcdir = content/canvas/test + + include $(DEPTH)/config/autoconf.mk + include $(topsrcdir)/config/rules.mk + + +index.frame: | + <!DOCTYPE html> + <title>Canvas tests - %(category)s.*</title> + <link rel="stylesheet" href="../frame.css"> + <p><a href="index.html">[index]</a> + <h1>%(backrefs)s.*</h1> + <p> + +# FF trunk doesn't do onload in object, so use iframe instead +#index.frame.item: |- +# <object width="200" height="220" data="framed.%s.html">(object fallback)</object><!-- +# --> +index.frame.item: |- + <iframe width="200" height="220" src="framed.%s.html">(iframe fallback)</iframe><!-- + --> + +index.w3c.frame: | + <!DOCTYPE html> + <title>Canvas tests - %(category)s.*</title> + <link rel="stylesheet" href="/common/canvas-frame.css"> + <p><a href="index.html">[index]</a> + <h1>%(backrefs)s.*</h1> + <p> + +index.w3c.frame.item: |- + <iframe width="320" height="240" src="%s.html">(iframe fallback)</iframe><!-- + --> + +index: | + <!DOCTYPE html> + <title>Canvas tests - index</title> + <link rel="stylesheet" href="../index.css"> + <script> + function expand(obj) { + obj.parentNode.className = obj.parentNode.className ? "" : "expand"; + return false; + } + </script> + + <h1><code><canvas></code> tests</h1> + + <p>Developed by <a href="mailto:excors@gmail.com">Philip Taylor</a>. + Last updated %(updated)s. + + <p>Based on the <a + href="http://www.whatwg.org/specs/web-apps/current-work/#the-canvas">HTML</a> + Draft Standard — 22 February 2010. See also the <a + href="spec.html">annotated specification</a>. + + <p>See <a href="results.html">test results</a> for some browsers. + (Generated semi-automatically via the <a + href="../reportgenentry.html">report generator</a>.) + + <p>You may want to <a href="../source.tar.bz2">download the source + code/data</a> (e.g. to create an offline copy of the tests). + + <h2>Test cases</h2> + + <p>For each test, a green background indicates success, red indicates + failure, blue indicates a need to manually confirm the output is as + expected. + + <p>The versions in the report generator are the most visually minimalist. + The category links below show the actual and expected renderings, and any + error messages. The individual test pages have links to relevant parts of + the specification and extra notes. + + <p>There may be many inaccuracies: tests that do not notice when part of + the output is incorrect; tests that are too intolerant of acceptable + renderings differences, or make other unreasonable assumptions; tests that + were written for an outdated version of the specification, and tests that + are just wrong. Also a number of features are not tested, most notably text + rendering. Please contact me (<a + href="mailto:excors@gmail.com">email</a>, <a + href="http://wiki.whatwg.org/wiki/IRC">IRC</a>, etc) if you find any + problems. + +index.w3c: | + <!DOCTYPE html> + <title>Canvas tests - index</title> + <link rel="stylesheet" href="/common/canvas-index.css"> + + <h1><code><canvas></code> tests</h1> + +index.category.item: | + <li><h3><a href="index.%s.html">%s.*</a></h3><p>%d test%s <a href="#" onclick="return expand(this)">expand</a></p> + +index.w3c.category.item: | + <li><h3><a href="index.%s.html">%s.*</a></h3><p>%d test%s</p> + +reportgen: | + <!DOCTYPE html> + <title>Canvas tests - report generator</title> + <link rel="stylesheet" href="../reportgen.css"> + <script src="../reportgen.js"></script> + <p>This is mainly for my own use, so it is not designed to be user-friendly. + If anyone else wants to use it for some reason, just wait + until "tests not yet loaded" and "tests not yet completed" get down to zero, then click the + pass/fail button for any test it shows where it cannot work out the answer (or use the + <kbd>y</kbd>/<kbd>n</kbd> keys to choose for the magenta-highlighted case), then use the + buttons at the bottom to collect all the results. + <form id="f"> + <p><label for="loading">Tests not yet loaded:</label> <input id="loading" value="0" readonly> + <p><label for="waiting">Tests not yet completed:</label> <input id="waiting" value="0" readonly> + <p><button type="button" onclick="showUnfinished()">Show uncompleted tests</button> + <button type="button" onclick="showAll()">Show all tests</button> + <button type="button" onclick="reloadAll()">Reload test cases serially</button> + <!--<button type="button" onclick="avoidFrameLimit()">HACK: work around frame limit</button> + <button type="button" onclick="makeObjects()">HACK: s/iframe/object/</button>--> + <hr> + <p><label for="passed">Detected passes:</label> <input id="passed" value="0" readonly> + <p><label for="failed">Detected fails:</label> <input id="failed" value="0" readonly> + <hr> + <table> + <tr> + <th>Test name + <th>Test case + <th>Pass? + <th>Fail? + <th>Notes + <script> + createTable( [ + %(items)s + ] ); + </script> + </table> + </form> + <hr> + <form method="post" action="../submitresults.cgi"> + <button type="button" onclick="document.getElementById('report').value = genreport()">Generate test report</button><br> + <textarea name="report" id="report" cols="100" rows="10"></textarea><br> + <input type="submit" value="Submit results"> (Submissions will tend to be ignored unless there + is a good reason why they won't be, so don't use this form unless there is such a reason.) + </form> + +results: | + <!DOCTYPE html> + <title>Canvas tests - results</title> + <link rel="stylesheet" href="../results.css"> + <table> + <col id="col1"> + <tr> + <th>Test diff --git a/testing/web-platform/tests/2dcontext/tools/tests.yaml b/testing/web-platform/tests/2dcontext/tools/tests.yaml new file mode 100644 index 000000000..083dfd1bd --- /dev/null +++ b/testing/web-platform/tests/2dcontext/tools/tests.yaml @@ -0,0 +1,1068 @@ +# Copyright (c) 2010 Philip Taylor +# Released under the BSD license and W3C Test Suite License: see LICENSE.txt + +- name: fallback.basic + desc: Fallback content is inserted into the DOM + testing: + - fallback + code: | + @assert canvas.childNodes.length === 1; + +- name: fallback.multiple + desc: Fallback content with multiple elements + testing: + - fallback + fallback: '<p class="fallback">FAIL</p><p class="fallback">FAIL</p>' + code: | + @assert canvas.childNodes.length === 2; + +- name: fallback.nested + desc: Fallback content containing another canvas (mostly testing parsers) + testing: + - fallback + fallback: '<canvas><p class="fallback">FAIL (fallback content)</p></canvas><p class="fallback">FAIL (fallback content)</p>' + code: | + @assert canvas.childNodes.length === 2; + +- name: type.name + desc: HTMLCanvasElement type and toString + testing: + - canvas.type + code: | + @assert Object.prototype.toString.call(canvas) === '[object HTMLCanvasElement]'; + +- name: type.exists + desc: HTMLCanvasElement is a property of window + notes: &bindings Defined in "Web IDL" (draft) + testing: + - canvas.type + code: | + @assert window.HTMLCanvasElement; + +- name: type.delete + desc: window.HTMLCanvasElement interface object is [[Configurable]] + notes: *bindings + testing: + - canvas.type + code: | + @assert delete window.HTMLCanvasElement === true; + @assert window.HTMLCanvasElement === undefined; + +- name: type.prototype + desc: window.HTMLCanvasElement has prototype, which is { ReadOnly, DontDelete }. prototype has getContext, which is not + notes: *bindings + testing: + - canvas.type + code: | + @assert window.HTMLCanvasElement.prototype; + @assert window.HTMLCanvasElement.prototype.getContext; + window.HTMLCanvasElement.prototype = null; + @assert window.HTMLCanvasElement.prototype; + delete window.HTMLCanvasElement.prototype; + @assert window.HTMLCanvasElement.prototype; + window.HTMLCanvasElement.prototype.getContext = 1; + @assert window.HTMLCanvasElement.prototype.getContext === 1; + delete window.HTMLCanvasElement.prototype.getContext; + @assert window.HTMLCanvasElement.prototype.getContext === undefined; + +- name: type.replace + desc: HTMLCanvasElement methods can be replaced, and the replacement methods used by canvases + notes: *bindings + testing: + - canvas.type + code: | + window.HTMLCanvasElement.prototype.getContext = function (name) { return 0; }; + @assert canvas.getContext('2d') === 0; + +- name: type.extend + desc: HTMLCanvasElement methods can be added, and the new methods used by canvases + notes: *bindings + testing: + - canvas.type + code: | + window.HTMLCanvasElement.prototype.getZero = function () { return 0; }; + @assert canvas.getZero() === 0; + + +- name: size.attributes.idl.set.zero + desc: Setting width/height IDL attributes to 0 + testing: + - size.width + - size.height + code: | + canvas.width = 0; + canvas.height = 0; + @assert canvas.width === 0; + @assert canvas.height === 0; +# expected: size 0 0 # can't generate zero-sized PNG + +- name: size.attributes.idl + desc: Getting/setting width/height IDL attributes + testing: + - size.width + - size.height + webidl: + - es-unsigned-long + code: | + canvas.width = "100"; + canvas.height = "100"; + @assert canvas.width === 100; + @assert canvas.height === 100; + + canvas.width = "+1.5e2"; + canvas.height = "0x96"; + @assert canvas.width === 150; + @assert canvas.height === 150; + + canvas.width = 200 - Math.pow(2, 32); + canvas.height = 200 - Math.pow(2, 32); + @assert canvas.width === 200; + @assert canvas.height === 200; + + canvas.width = 301.999; + canvas.height = 301.001; + @assert canvas.width === 301; + @assert canvas.height === 301; + + canvas.width = "400x"; + canvas.height = "foo"; + @assert canvas.width === 0; + @assert canvas.height === 0; + +- name: size.attributes.default + desc: Default width/height when attributes are missing + testing: + - size.default + - size.missing + canvas: "" + code: | + @assert canvas.width === 300; + @assert canvas.height === 150; + @assert !canvas.hasAttribute('width'); + @assert !canvas.hasAttribute('height'); + expected: size 300 150 + +- name: size.attributes.reflect.setidl + desc: Setting IDL attributes updates IDL and content attributes + testing: + - size.reflect + code: | + canvas.width = 120; + canvas.height = 60; + @assert canvas.getAttribute('width') === '120'; + @assert canvas.getAttribute('height') === '60'; + @assert canvas.width === 120; + @assert canvas.height === 60; + expected: size 120 60 + +- name: size.attributes.reflect.setidlzero + desc: Setting IDL attributes to 0 updates IDL and content attributes + testing: + - size.reflect + code: | + canvas.width = 0; + canvas.height = 0; + @assert canvas.getAttribute('width') === '0'; + @assert canvas.getAttribute('height') === '0'; + @assert canvas.width === 0; + @assert canvas.height === 0; +# expected: size 0 0 # can't generate zero-sized PNG + +- name: size.attributes.reflect.setcontent + desc: Setting content attributes updates IDL and content attributes + testing: + - size.reflect + code: | + canvas.setAttribute('width', '120'); + canvas.setAttribute('height', '60'); + @assert canvas.getAttribute('width') === '120'; + @assert canvas.getAttribute('height') === '60'; + @assert canvas.width === 120; + @assert canvas.height === 60; + expected: size 120 60 + +- name: size.attributes.removed + desc: Removing content attributes reverts to default size + testing: + - size.missing + canvas: width="120" height="60" + code: | + @assert canvas.width === 120; + canvas.removeAttribute('width'); + @assert canvas.width === 300; + expected: size 300 60 + +- meta: | + cases = [ + ("zero", "0", 0), + ("empty", "", None), + ("onlyspace", " ", None), + ("space", " 100", 100), + ("whitespace", "\n\t\f100", 100), + ("plus", "+100", 100), + ("minus", "-100", None), + ("octal", "0100", 100), + ("hex", "0x100", 0), + ("exp", "100e1", 100), + ("decimal", "100.999", 100), + ("percent", "100%", 100), + ("em", "100em", 100), + ("junk", "#!?", None), + ("trailingjunk", "100#!?", 100), + ] + def gen(name, string, exp, code): + testing = ["size.nonnegativeinteger"] + if exp is None: + testing.append("size.error") + code += "@assert canvas.width === 300;\n@assert canvas.height === 150;\n" + expected = "size 300 150" + else: + code += "@assert canvas.width === %s;\n@assert canvas.height === %s;\n" % (exp, exp) + expected = "size %s %s" % (exp, exp) + + # With "100%", Opera gets canvas.width = 100 but renders at 100% of the frame width, + # so check the CSS display width + code += '@assert window.getComputedStyle(canvas, null).getPropertyValue("width") === "%spx";\n' % (exp, ) + + code += "@assert canvas.getAttribute('width') === %r;\n" % string + code += "@assert canvas.getAttribute('height') === %r;\n" % string + + if exp == 0: + expected = None # can't generate zero-sized PNGs for the expected image + + return code, testing, expected + + for name, string, exp in cases: + code = "" + code, testing, expected = gen(name, string, exp, code) + tests.append( { + "name": "size.attributes.parse.%s" % name, + "desc": "Parsing of non-negative integers", + "testing": testing, + "canvas": 'width="%s" height="%s"' % (string, string), + "code": code, + "expected": expected + } ) + + for name, string, exp in cases: + code = "canvas.setAttribute('width', %r);\ncanvas.setAttribute('height', %r);\n" % (string, string) + code, testing, expected = gen(name, string, exp, code) + tests.append( { + "name": "size.attributes.setAttribute.%s" % name, + "desc": "Parsing of non-negative integers in setAttribute", + "testing": testing, + "canvas": 'width="50" height="50"', + "code": code, + "expected": expected + } ) + +- name: size.attributes.style + desc: Canvas size is independent of CSS resizing + testing: + - size.css + canvas: 'width="50" height="30" style="width: 100px; height: 50px"' + code: | + @assert canvas.width === 50; + @assert canvas.height === 30; + expected: size 100 50 + +- name: size.large + DISABLED: | + "User agents may impose implementation-specific limits on otherwise unconstrained + inputs, e.g. to prevent denial of service attacks, to guard against running out of memory, + or to work around platform-specific limitations." + testing: + - size.width + - size.height + notes: Not sure how reasonable this is, but the spec doesn't say there's an upper limit on the size. + code: | + var n = 2147483647; // 2^31 - 1, which should be supported by any sensible definition of "long" + canvas.width = n; + canvas.height = n; + @assert canvas.width === n; + @assert canvas.height === n; +# expected: size 2147483647 2147483647 # not a good idea to generate the expected image in this case... + +- name: initial.colour + desc: Initial state is transparent black + testing: + - initial.colour + notes: | + Output should be transparent black (not transparent anything-else), but manual + verification can only confirm that it's transparent - it's not possible to make + the actual blackness visible. + code: | + @assert pixel 20,20 == 0,0,0,0; + expected: size 100 50 # transparent + +- name: initial.reset.different + desc: Changing size resets canvas to transparent black + testing: + - initial.reset + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 50, 50); + @assert pixel 20,20 == 255,0,0,255; + canvas.width = 50; + @assert pixel 20,20 == 0,0,0,0; + expected: size 50 50 # transparent + +- name: initial.reset.same + desc: Setting size (not changing the value) resets canvas to transparent black + testing: + - initial.reset + code: | + canvas.width = 100; + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 50, 50); + @assert pixel 20,20 == 255,0,0,255; + canvas.width = 100; + @assert pixel 20,20 == 0,0,0,0; + expected: size 100 50 # transparent + +- name: initial.reset.path + desc: Resetting the canvas state resets the current path + testing: + - initial.reset + code: | + canvas.width = 100; + ctx.rect(0, 0, 100, 50); + canvas.width = 100; + ctx.fillStyle = '#f00'; + ctx.fill(); + @assert pixel 20,20 == 0,0,0,0; + expected: size 100 50 # transparent + +- name: initial.reset.clip + desc: Resetting the canvas state resets the current clip region + testing: + - initial.reset + code: | + canvas.width = 100; + ctx.rect(0, 0, 1, 1); + ctx.clip(); + canvas.width = 100; + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 20,20 == 0,255,0,255; + expected: green + +- name: initial.reset.transform + desc: Resetting the canvas state resets the current transformation matrix + testing: + - initial.reset + code: | + canvas.width = 100; + ctx.scale(0.1, 0.1); + canvas.width = 100; + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 20,20 == 0,255,0,255; + expected: green + +- name: initial.reset.gradient + desc: Resetting the canvas state does not invalidate any existing gradients + testing: + - initial.reset + code: | + canvas.width = 50; + var g = ctx.createLinearGradient(0, 0, 100, 0); + g.addColorStop(0, '#0f0'); + g.addColorStop(1, '#0f0'); + canvas.width = 100; + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: initial.reset.pattern + desc: Resetting the canvas state does not invalidate any existing patterns + testing: + - initial.reset + code: | + canvas.width = 30; + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 30, 50); + var p = ctx.createPattern(canvas, 'repeat-x'); + canvas.width = 100; + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = p; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +# See tests2d.yaml for initial.reset.2dstate + + +- name: context.emptystring + desc: getContext with empty string returns null + testing: + - context.unrecognised + code: | + @assert canvas.getContext("") === null; + +- name: context.unrecognised.badname + desc: getContext with unrecognised context name returns null + testing: + - context.unrecognised + code: | + @assert canvas.getContext('This is not an implemented context in any real browser') === null; + +- name: context.unrecognised.badsuffix + desc: Context name "2d" plus a suffix is unrecognised + testing: + - context.unrecognised + code: | + @assert canvas.getContext("2d#") === null; + +- name: context.unrecognised.nullsuffix + desc: Context name "2d" plus a "\0" suffix is unrecognised + testing: + - context.unrecognised + code: | + @assert canvas.getContext("2d\0") === null; + +- name: context.unrecognised.unicode + desc: Context name which kind of looks like "2d" is unrecognised + testing: + - context.unrecognised + code: | + @assert canvas.getContext("2\uFF44") === null; // Fullwidth Latin Small Letter D + +- name: context.casesensitive + desc: Context name "2D" is unrecognised; matching is case sensitive + testing: + - context.unrecognised + code: | + @assert canvas.getContext('2D') === null; + +- name: context.arguments.missing + notes: *bindings + testing: + - canvas.getContext + code: | + @assert throws TypeError canvas.getContext(); @moz-todo + + + +- name: toBlob.png + desc: toBlob with image/png returns a PNG Blob + testing: + - toBlob.png + code: | + canvas.toBlob(function(data){ + @assert data.type === "image/png"; + }, 'image/png'); + +- name: toBlob.jpeg + desc: toBlob with image/jpeg returns a JPEG Blob + testing: + - toBlob.jpeg + code: | + canvas.toBlob(function(data){ + @assert data.type === "image/jpeg"; + }, 'image/jpeg'); + +- name: toDataURL.default + desc: toDataURL with no arguments returns a PNG + testing: + - toDataURL.noarguments + code: | + var data = canvas.toDataURL(); + @assert data =~ /^data:image\/png[;,]/; + +- name: toDataURL.png + desc: toDataURL with image/png returns a PNG + testing: + - toDataURL.png + - toDataURL.witharguments + code: | + var data = canvas.toDataURL('image/png'); + @assert data =~ /^data:image\/png[;,]/; + +- name: toDataURL.jpg + desc: toDataURL with image/jpg is invalid type hence returns a PNG + testing: + - toDataURL.jpg + - toDataURL.witharguments + code: | + var data = canvas.toDataURL('image/jpg'); + @assert data =~ /^data:image\/png[;,]/; + + +- name: toDataURL.bogustype + desc: toDataURL with a syntactically invalid type returns a PNG + testing: + - toDataURL.unrecognised + code: | + var data = canvas.toDataURL('bogus'); + @assert data =~ /^data:image\/png[;,]/; + +- name: toDataURL.unrecognised + desc: toDataURL with an unhandled type returns a PNG + testing: + - toDataURL.unrecognised + code: | + var data = canvas.toDataURL('image/example'); + @assert data =~ /^data:image\/png[;,]/; + +- name: toDataURL.lowercase.ascii + desc: toDataURL type is case-insensitive + testing: + - toDataURL.lowercase + code: | + var data = canvas.toDataURL('ImAgE/PnG'); + @assert data =~ /^data:image\/png[;,]/; + + // If JPEG is supported at all, it must be supported case-insensitively + data = canvas.toDataURL('image/jpeg'); + if (data.match(/^data:image\/jpeg[;,]/)) { + data = canvas.toDataURL('ImAgE/JpEg'); + @assert data =~ /^data:image\/jpeg[;,]/; + } + +- name: toDataURL.lowercase.unicode + desc: toDataURL type is ASCII-case-insensitive + testing: + - toDataURL.lowercase + code: | + // Use LATIN CAPITAL LETTER I WITH DOT ABOVE (Unicode lowercase is "i") + var data = canvas.toDataURL('\u0130mage/png'); + @assert data =~ /^data:image\/png[;,]/; + + var data = canvas.toDataURL('\u0130mage/jpeg'); + @assert data =~ /^data:image\/png[;,]/; + +- name: toDataURL.arguments.1 + desc: toDataURL ignores extra arguments + testing: + - toDataURL.arguments + code: | + var data = canvas.toDataURL('image/png', 'another argument that should not raise an exception'); + @assert data =~ /^data:image\/png[;,]/; + +- name: toDataURL.arguments.2 + desc: toDataURL ignores extra arguments + testing: + - toDataURL.arguments + code: | + var data = canvas.toDataURL('image/png', 'another argument that should not raise an exception', 'and another'); + @assert data =~ /^data:image\/png[;,]/; + +- name: toDataURL.arguments.3 + desc: toDataURL ignores extra arguments + testing: + - toDataURL.arguments + code: | + // More arguments that should not raise exceptions + var data = canvas.toDataURL('image/png', null, null, null); + @assert data =~ /^data:image\/png[;,]/; + +- name: toDataURL.nocontext + desc: toDataURL works before any context has been got + testing: + - toDataURL.noarguments + code: | + var canvas2 = document.createElement('canvas'); + var data = canvas2.toDataURL(); + @assert data =~ /^data:image\/png[;,]/; + +- name: toDataURL.zerosize + desc: toDataURL on zero-size canvas returns 'data:,' + testing: + - toDataURL.zerosize + canvas: width="0" height="0" + code: | + var data = canvas.toDataURL(); + @assert data === 'data:,'; + +- name: toDataURL.zerowidth + desc: toDataURL on zero-size canvas returns 'data:,' + testing: + - toDataURL.zerosize + canvas: width="0" + code: | + var data = canvas.toDataURL(); + @assert data === 'data:,'; + +- name: toDataURL.zeroheight + desc: toDataURL on zero-size canvas returns 'data:,' + testing: + - toDataURL.zerosize + canvas: height="0" + code: | + var data = canvas.toDataURL(); + @assert data === 'data:,'; + +- name: toDataURL.large1 + DISABLED: just testing implementation limits, and tends to crash + canvas: width="30000" height="1" + code: | + var data = canvas.toDataURL(); + @assert data =~ /^data:image\/png[;,]/; + +- name: toDataURL.large2 + DISABLED: just testing implementation limits, and tends to crash + canvas: width="32767" height="1" + code: | + var data = canvas.toDataURL(); + @assert data =~ /^data:image\/png[;,]/; + +- name: toDataURL.large3 + DISABLED: just testing implementation limits, and tends to crash + canvas: width="32768" height="1" + code: | + var data = canvas.toDataURL(); + @assert data =~ /^data:image\/png[;,]/; + +- name: toDataURL.png.primarycolours + desc: toDataURL with PNG handles simple colours correctly + testing: + - toDataURL.png + code: | + ctx.fillStyle = '#ff0'; + ctx.fillRect(0, 0, 25, 40); + ctx.fillStyle = '#0ff'; + ctx.fillRect(25, 0, 50, 40); + ctx.fillStyle = '#00f'; + ctx.fillRect(75, 0, 25, 40); + ctx.fillStyle = '#fff'; + ctx.fillRect(0, 40, 100, 10); + var data = canvas.toDataURL(); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + var img = new Image(); + deferTest(); + img.onload = t.step_func_done(function () + { + ctx.drawImage(img, 0, 0); + @assert pixel 12,20 == 255,255,0,255; + @assert pixel 50,20 == 0,255,255,255; + @assert pixel 87,20 == 0,0,255,255; + @assert pixel 50,45 == 255,255,255,255; + }); + img.src = data; + expected: | + size 100 50 + cr.set_source_rgb(1, 1, 0) + cr.rectangle(0, 0, 25, 40) + cr.fill() + cr.set_source_rgb(0, 1, 1) + cr.rectangle(25, 0, 50, 40) + cr.fill() + cr.set_source_rgb(0, 0, 1) + cr.rectangle(75, 0, 25, 40) + cr.fill() + cr.set_source_rgb(1, 1, 1) + cr.rectangle(0, 40, 100, 10) + cr.fill() + +- name: toDataURL.png.complexcolours + desc: toDataURL with PNG handles non-primary and non-solid colours correctly + testing: + - toDataURL.png + code: | + // (These values are chosen to survive relatively alright through being premultiplied) + ctx.fillStyle = 'rgba(1, 3, 254, 1)'; + ctx.fillRect(0, 0, 25, 25); + ctx.fillStyle = 'rgba(8, 252, 248, 0.75)'; + ctx.fillRect(25, 0, 25, 25); + ctx.fillStyle = 'rgba(6, 10, 250, 0.502)'; + ctx.fillRect(50, 0, 25, 25); + ctx.fillStyle = 'rgba(12, 16, 244, 0.25)'; + ctx.fillRect(75, 0, 25, 25); + var img = new Image(); + deferTest(); + img.onload = t.step_func_done(function () + { + ctx.drawImage(img, 0, 25); + // (The alpha values do not really survive float->int conversion, so just + // do approximate comparisons) + @assert pixel 12,40 == 1,3,254,255; + @assert pixel 37,40 ==~ 8,252,248,191 +/- 2; + @assert pixel 62,40 ==~ 6,10,250,127 +/- 4; + @assert pixel 87,40 ==~ 12,16,244,63 +/- 8; + }); + img.src = canvas.toDataURL(); + expected: | + size 100 50 + cr.set_source_rgba(1/255., 3/255., 254/255., 1) + cr.rectangle(0, 0, 25, 50) + cr.fill() + cr.set_source_rgba(8/255., 252/255., 248/255., 191/255.) + cr.rectangle(25, 0, 25, 50) + cr.fill() + cr.set_source_rgba(6/255., 10/255., 250/255., 127/255.) + cr.rectangle(50, 0, 25, 50) + cr.fill() + cr.set_source_rgba(12/255., 16/255., 244/255., 63/255.) + cr.rectangle(75, 0, 25, 50) + cr.fill() + +- name: toDataURL.jpeg.primarycolours + desc: toDataURL with JPEG handles simple colours correctly + testing: + - toDataURL.jpeg + code: | + ctx.fillStyle = '#ff0'; + ctx.fillRect(0, 0, 25, 40); + ctx.fillStyle = '#0ff'; + ctx.fillRect(25, 0, 50, 40); + ctx.fillStyle = '#00f'; + ctx.fillRect(75, 0, 25, 40); + ctx.fillStyle = '#fff'; + ctx.fillRect(0, 40, 100, 10); + var data = canvas.toDataURL('image/jpeg'); // it is okay if this returns a PNG instead + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + var img = new Image(); + deferTest(); + img.onload = t.step_func_done(function () + { + ctx.drawImage(img, 0, 0); + @assert pixel 12,20 ==~ 255,255,0,255 +/- 8; + @assert pixel 50,20 ==~ 0,255,255,255 +/- 8; + @assert pixel 87,20 ==~ 0,0,255,255 +/- 8; + @assert pixel 50,45 ==~ 255,255,255,255 +/- 8; + }); + img.src = data; + expected: | + size 100 50 + cr.set_source_rgb(1, 1, 0) + cr.rectangle(0, 0, 25, 40) + cr.fill() + cr.set_source_rgb(0, 1, 1) + cr.rectangle(25, 0, 50, 40) + cr.fill() + cr.set_source_rgb(0, 0, 1) + cr.rectangle(75, 0, 25, 40) + cr.fill() + cr.set_source_rgb(1, 1, 1) + cr.rectangle(0, 40, 100, 10) + cr.fill() + +- name: toDataURL.jpeg.alpha + desc: toDataURL with JPEG composites onto black + testing: + - toDataURL.jpeg + - toDataURL.noalpha + code: | + ctx.fillStyle = 'rgba(128, 255, 128, 0.5)'; + ctx.fillRect(0, 0, 100, 50); + ctx.globalCompositeOperation = 'destination-over'; // should be ignored by toDataURL + var data = canvas.toDataURL('image/jpeg'); + ctx.globalCompositeOperation = 'source-over'; + if (!data.match(/^data:image\/jpeg[;,]/)) { + @assert true; + } else { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + var img = new Image(); + deferTest(); + img.onload = t.step_func_done(function () + { + ctx.drawImage(img, 0, 0); + @assert pixel 50,25 ==~ 63,127,63,255 +/- 8; + }); + img.src = data; + } + expected: | + size 100 50 + cr.set_source_rgb(0.25, 0.5, 0.25) + cr.rectangle(0, 0, 100, 50) + cr.fill() + +- name: toDataURL.jpeg.quality.basic + desc: toDataURL with JPEG uses the quality parameter + testing: + - toDataURL.jpeg.quality + mozilla: { throws } + code: | + ctx.fillStyle = '#00f'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0ff'; + ctx.fillRect(0, 3, 100, 1); + // Check for JPEG support first + var data = canvas.toDataURL('image/jpeg'); + if (!data.match(/^data:image\/jpeg[;,]/)) { + @assert true; + } else { + var data_hi = canvas.toDataURL('image/jpeg', 0.99); + var data_lo = canvas.toDataURL('image/jpeg', 0.01); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + deferTest(); + var img_hi = new Image(); + img_hi.onload = function () + { + var img_lo = new Image(); + img_lo.onload = t.step_func_done(function () + { + ctx.drawImage(img_hi, 0, 0, 50, 50, 0, 0, 50, 50); + ctx.drawImage(img_lo, 0, 0, 50, 50, 50, 0, 50, 50); + @assert data_hi.length > data_lo.length; + @assert pixel 25,25 ==~ 0,0,255,255 +/- 8; + @assert pixel 75,25 ==~ 0,0,255,255 +/- 32; + }); + img_lo.src = data_lo; + }; + img_hi.src = data_hi; + } + expected: | + size 100 50 + cr.set_source_rgb(0, 0, 1) + cr.rectangle(0, 0, 100, 50) + cr.fill() + cr.set_source_rgb(0, 1, 1) + cr.rectangle(0, 3, 100, 1) + cr.fill() + +- name: toDataURL.jpeg.quality.notnumber + desc: toDataURL with JPEG handles non-numeric quality parameters + testing: + - toDataURL.jpeg.nan + code: | + ctx.fillStyle = '#00f'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0ff'; + ctx.fillRect(0, 3, 100, 1); + // Check for JPEG support first + var data = canvas.toDataURL('image/jpeg'); + if (!data.match(/^data:image\/jpeg[;,]/)) { + @assert true; + } else { + @assert canvas.toDataURL('image/jpeg', 'bogus') === data; + @assert canvas.toDataURL('image/jpeg', {}) === data; + @assert canvas.toDataURL('image/jpeg', null) === data; + @assert canvas.toDataURL('image/jpeg', undefined) === data; + @assert canvas.toDataURL('image/jpeg', true) === data; + @assert canvas.toDataURL('image/jpeg', '0.01') === data; + } + +- name: toDataURL.jpeg.quality.outsiderange + desc: toDataURL with JPEG handles out-of-range quality parameters + testing: + - toDataURL.jpeg.range + code: | + ctx.fillStyle = '#00f'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0ff'; + ctx.fillRect(0, 3, 100, 1); + // Check for JPEG support first + var data = canvas.toDataURL('image/jpeg'); + if (!data.match(/^data:image\/jpeg[;,]/)) { + @assert true; + } else { + @assert canvas.toDataURL('image/jpeg', 10) === data; + @assert canvas.toDataURL('image/jpeg', -10) === data; + @assert canvas.toDataURL('image/jpeg', 1.01) === data; + @assert canvas.toDataURL('image/jpeg', -0.01) === data; + + @assert canvas.toDataURL('image/jpeg', 1).length >= canvas.toDataURL('image/jpeg', 0.9).length; + @assert canvas.toDataURL('image/jpeg', 0).length <= canvas.toDataURL('image/jpeg', 0.1).length; + } + + +# TODO: work out what security exception should be thrown +# TODO: test same-origin vs same-host + +- name: security.drawImage.image + desc: drawImage of different-origin image makes the canvas origin-unclean + mozilla: { disabled } # relies on external resources + testing: + - security.drawImage.image + - security.toDataURL + - security.getImageData + scripts: + - /common/get-host-info.sub.js + - data:text/javascript,addCrossOriginYellowImage() + code: | + ctx.drawImage(document.getElementById('yellow.png'), 0, 0); + @assert throws SECURITY_ERR canvas.toDataURL(); + @assert throws SECURITY_ERR ctx.getImageData(0, 0, 1, 1); + +- name: security.drawImage.canvas + desc: drawImage of unclean canvas makes the canvas origin-unclean + mozilla: { disabled } # relies on external resources + testing: + - security.drawImage.canvas + scripts: + - /common/get-host-info.sub.js + - data:text/javascript,addCrossOriginYellowImage() + code: | + var canvas2 = document.createElement('canvas'); + canvas2.width = 100; + canvas2.height = 50; + var ctx2 = canvas2.getContext('2d'); + ctx2.drawImage(document.getElementById('yellow.png'), 0, 0); + ctx.drawImage(canvas2, 0, 0); + @assert throws SECURITY_ERR canvas.toDataURL(); + @assert throws SECURITY_ERR ctx.getImageData(0, 0, 1, 1); + +- name: security.pattern.create + desc: Creating an unclean pattern does not make the canvas origin-unclean + mozilla: { disabled } # relies on external resources + testing: + - security.start + scripts: + - /common/get-host-info.sub.js + - data:text/javascript,addCrossOriginYellowImage() + code: | + var p = ctx.createPattern(document.getElementById('yellow.png'), 'repeat'); + canvas.toDataURL(); + ctx.getImageData(0, 0, 1, 1); + @assert true; // okay if there was no exception + +- name: security.pattern.cross + desc: Using an unclean pattern makes the target canvas origin-unclean, not the pattern canvas + mozilla: { disabled } # relies on external resources + testing: + - security.start + scripts: + - /common/get-host-info.sub.js + - data:text/javascript,addCrossOriginYellowImage() + code: | + var canvas2 = document.createElement('canvas'); + canvas2.width = 100; + canvas2.height = 50; + var ctx2 = canvas2.getContext('2d'); + var p = ctx2.createPattern(document.getElementById('yellow.png'), 'repeat'); + ctx.fillStyle = p; + ctx.fillRect(0, 0, 100, 50); + @assert throws SECURITY_ERR canvas.toDataURL(); + @assert throws SECURITY_ERR ctx.getImageData(0, 0, 1, 1); + canvas2.toDataURL(); + ctx2.getImageData(0, 0, 1, 1); + +- name: security.pattern.canvas.timing + desc: Pattern safety depends on whether the source was origin-clean, not on whether it still is clean + notes: Disagrees with spec on "is" vs "was" + mozilla: { disabled } # relies on external resources + testing: + - security.start + - security.fillStyle.canvas + scripts: + - /common/get-host-info.sub.js + - data:text/javascript,addCrossOriginYellowImage() + code: | + var canvas2 = document.createElement('canvas'); + canvas2.width = 100; + canvas2.height = 50; + var ctx2 = canvas2.getContext('2d'); + ctx2.fillStyle = '#0f0'; + ctx2.fillRect(0, 0, 100, 50); + var p = ctx.createPattern(canvas2, 'repeat'); + ctx2.drawImage(document.getElementById('yellow.png'), 0, 0); // make canvas2 origin-unclean + ctx.fillStyle = p; + ctx.fillRect(0, 0, 100, 50); + canvas.toDataURL(); + ctx.getImageData(0, 0, 1, 1); + @assert true; // okay if there was no exception + +- name: security.pattern.image.fillStyle + desc: Setting fillStyle to a pattern of a different-origin image makes the canvas origin-unclean + mozilla: { disabled } # relies on external resources + testing: + - security.fillStyle.image + scripts: + - /common/get-host-info.sub.js + - data:text/javascript,addCrossOriginYellowImage() + code: | + var p = ctx.createPattern(document.getElementById('yellow.png'), 'repeat'); + ctx.fillStyle = p; + ctx.fillStyle = 'red'; + @assert throws SECURITY_ERR canvas.toDataURL(); + @assert throws SECURITY_ERR ctx.getImageData(0, 0, 1, 1); + +- name: security.pattern.canvas.fillStyle + desc: Setting fillStyle to a pattern of an unclean canvas makes the canvas origin-unclean + mozilla: { bug: 354127, disabled } # relies on external resources + testing: + - security.fillStyle.canvas + scripts: + - /common/get-host-info.sub.js + - data:text/javascript,addCrossOriginYellowImage() + code: | + var canvas2 = document.createElement('canvas'); + canvas2.width = 100; + canvas2.height = 50; + var ctx2 = canvas2.getContext('2d'); + ctx2.drawImage(document.getElementById('yellow.png'), 0, 0); + var p = ctx.createPattern(canvas2, 'repeat'); + ctx.fillStyle = p; + ctx.fillStyle = 'red'; + @assert throws SECURITY_ERR canvas.toDataURL(); + @assert throws SECURITY_ERR ctx.getImageData(0, 0, 1, 1); + +- name: security.pattern.image.strokeStyle + desc: Setting strokeStyle to a pattern of a different-origin image makes the canvas origin-unclean + mozilla: { disabled } # relies on external resources + testing: + - security.strokeStyle.image + scripts: + - /common/get-host-info.sub.js + - data:text/javascript,addCrossOriginYellowImage() + code: | + var p = ctx.createPattern(document.getElementById('yellow.png'), 'repeat'); + ctx.strokeStyle = p; + ctx.strokeStyle = 'red'; + @assert throws SECURITY_ERR canvas.toDataURL(); + @assert throws SECURITY_ERR ctx.getImageData(0, 0, 1, 1); + +- name: security.pattern.canvas.strokeStyle + desc: Setting strokeStyle to a pattern of an unclean canvas makes the canvas origin-unclean + mozilla: { bug: 354127, disabled } # relies on external resources + testing: + - security.strokeStyle.canvas + scripts: + - /common/get-host-info.sub.js + - data:text/javascript,addCrossOriginYellowImage() + code: | + var canvas2 = document.createElement('canvas'); + canvas2.width = 100; + canvas2.height = 50; + var ctx2 = canvas2.getContext('2d'); + ctx2.drawImage(document.getElementById('yellow.png'), 0, 0); + var p = ctx.createPattern(canvas2, 'repeat'); + ctx.strokeStyle = p; + ctx.strokeStyle = 'red'; + @assert throws SECURITY_ERR canvas.toDataURL(); + @assert throws SECURITY_ERR ctx.getImageData(0, 0, 1, 1); + +- name: security.dataURI + desc: 'data: URIs do not count as different-origin, and do not taint the canvas' + mozilla: { disabled, bug: 417836 } # can't do "todo" so just disable it + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + var data = canvas.toDataURL(); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + var img = new Image(); + deferTest(); + img.onload = t.step_func_done(function () + { + ctx.drawImage(img, 0, 0); + canvas.toDataURL(); // should be permitted + @assert pixel 50,25 == 0,255,0,255; + }); + img.src = data; + expected: green + +- name: security.reset + desc: Resetting the canvas state does not reset the origin-clean flag + mozilla: { disabled } # relies on external resources + testing: + - initial.reset + scripts: + - /common/get-host-info.sub.js + - data:text/javascript,addCrossOriginYellowImage() + code: | + canvas.width = 50; + ctx.drawImage(document.getElementById('yellow.png'), 0, 0); + @assert throws SECURITY_ERR canvas.toDataURL(); + canvas.width = 100; + @assert throws SECURITY_ERR canvas.toDataURL(); diff --git a/testing/web-platform/tests/2dcontext/tools/tests2d.yaml b/testing/web-platform/tests/2dcontext/tools/tests2d.yaml new file mode 100644 index 000000000..21a8c0015 --- /dev/null +++ b/testing/web-platform/tests/2dcontext/tools/tests2d.yaml @@ -0,0 +1,10092 @@ +# Copyright (c) 2011 Philip Taylor +# Released under the BSD license and W3C Test Suite License: see LICENSE.txt + +- name: 2d.getcontext.exists + desc: The 2D context is implemented + testing: + - context.2d + code: | + @assert canvas.getContext('2d') !== null; + +- name: 2d.getcontext.extraargs + desc: The 2D context ignores extra getContext arguments + testing: + - context.2d.extraargs + code: | + @assert canvas.getContext('2d', false, {}, [], 1, "2") !== null; + +- name: 2d.type.exists + desc: The 2D context interface is a property of 'window' + notes: &bindings Defined in "Web IDL" (draft) + testing: + - context.2d.type + code: | + @assert window.CanvasRenderingContext2D; + +- name: 2d.type.delete + desc: window.CanvasRenderingContext2D is Configurable + notes: *bindings + testing: + - context.2d.type + code: | + @assert window.CanvasRenderingContext2D !== undefined; + @assert delete window.CanvasRenderingContext2D === true; + @assert window.CanvasRenderingContext2D === undefined; + +- name: 2d.type.prototype + desc: window.CanvasRenderingContext2D.prototype are not [[Writable]] and not [[Configurable]], and its methods are [[Configurable]]. + notes: *bindings + testing: + - context.2d.type + code: | + @assert window.CanvasRenderingContext2D.prototype; + @assert window.CanvasRenderingContext2D.prototype.fill; + window.CanvasRenderingContext2D.prototype = null; + @assert window.CanvasRenderingContext2D.prototype; + delete window.CanvasRenderingContext2D.prototype; + @assert window.CanvasRenderingContext2D.prototype; + window.CanvasRenderingContext2D.prototype.fill = 1; + @assert window.CanvasRenderingContext2D.prototype.fill === 1; + delete window.CanvasRenderingContext2D.prototype.fill; + @assert window.CanvasRenderingContext2D.prototype.fill === undefined; + +- name: 2d.type.replace + desc: Interface methods can be overridden + notes: *bindings + testing: + - context.2d.type + code: | + var fillRect = window.CanvasRenderingContext2D.prototype.fillRect; + window.CanvasRenderingContext2D.prototype.fillRect = function (x, y, w, h) + { + this.fillStyle = '#0f0'; + fillRect.call(this, x, y, w, h); + }; + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.type.extend + desc: Interface methods can be added + notes: *bindings + testing: + - context.2d.type + code: | + window.CanvasRenderingContext2D.prototype.fillRectGreen = function (x, y, w, h) + { + this.fillStyle = '#0f0'; + this.fillRect(x, y, w, h); + }; + ctx.fillStyle = '#f00'; + ctx.fillRectGreen(0, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.getcontext.unique + desc: getContext('2d') returns the same object + testing: + - context.unique + code: | + @assert canvas.getContext('2d') === canvas.getContext('2d'); + +- name: 2d.getcontext.shared + desc: getContext('2d') returns objects which share canvas state + testing: + - context.unique + code: | + var ctx2 = canvas.getContext('2d'); + ctx.fillStyle = '#f00'; + ctx2.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.voidreturn + desc: void methods return undefined + notes: *bindings + images: + - yellow.png + code: | + @assert ctx.save() === undefined; + @assert ctx.restore() === undefined; + @assert ctx.scale(1, 1) === undefined; + @assert ctx.rotate(0) === undefined; + @assert ctx.translate(0, 0) === undefined; + if (ctx.transform) { // (avoid spurious failures, since the aim here is not to test that all features are supported) + @assert ctx.transform(1, 0, 0, 1, 0, 0) === undefined; + } + if (ctx.setTransform) { + @assert ctx.setTransform(1, 0, 0, 1, 0, 0) === undefined; + } + @assert ctx.clearRect(0, 0, 0, 0) === undefined; + @assert ctx.fillRect(0, 0, 0, 0) === undefined; + @assert ctx.strokeRect(0, 0, 0, 0) === undefined; + @assert ctx.beginPath() === undefined; + @assert ctx.closePath() === undefined; + @assert ctx.moveTo(0, 0) === undefined; + @assert ctx.lineTo(0, 0) === undefined; + @assert ctx.quadraticCurveTo(0, 0, 0, 0) === undefined; + @assert ctx.bezierCurveTo(0, 0, 0, 0, 0, 0) === undefined; + @assert ctx.arcTo(0, 0, 0, 0, 1) === undefined; + @assert ctx.rect(0, 0, 0, 0) === undefined; + @assert ctx.arc(0, 0, 1, 0, 0, true) === undefined; + @assert ctx.fill() === undefined; + @assert ctx.stroke() === undefined; + @assert ctx.clip() === undefined; + if (ctx.fillText) { + @assert ctx.fillText('test', 0, 0) === undefined; + @assert ctx.strokeText('test', 0, 0) === undefined; + } + if (ctx.putImageData) { + @assert ctx.putImageData(ctx.getImageData(0, 0, 1, 1), 0, 0) === undefined; + } + @assert ctx.drawImage(document.getElementById('yellow.png'), 0, 0, 1, 1, 0, 0, 0, 0) === undefined; + @assert ctx.drawImage(canvas, 0, 0, 1, 1, 0, 0, 0, 0) === undefined; + @assert ctx.createLinearGradient(0, 0, 0, 0).addColorStop(0, 'white') === undefined; + +- name: 2d.missingargs + desc: Missing arguments cause TypeError + code: | + @assert throws TypeError ctx.scale(); + @assert throws TypeError ctx.scale(1); + @assert throws TypeError ctx.rotate(); + @assert throws TypeError ctx.translate(); + @assert throws TypeError ctx.translate(0); + if (ctx.transform) { // (avoid spurious failures, since the aim here is not to test that all features are supported) + @assert throws TypeError ctx.transform(); + @assert throws TypeError ctx.transform(1); + @assert throws TypeError ctx.transform(1, 0); + @assert throws TypeError ctx.transform(1, 0, 0); + @assert throws TypeError ctx.transform(1, 0, 0, 1); + @assert throws TypeError ctx.transform(1, 0, 0, 1, 0); + } + if (ctx.setTransform) { + @assert throws TypeError ctx.setTransform(); + @assert throws TypeError ctx.setTransform(1); + @assert throws TypeError ctx.setTransform(1, 0); + @assert throws TypeError ctx.setTransform(1, 0, 0); + @assert throws TypeError ctx.setTransform(1, 0, 0, 1); + @assert throws TypeError ctx.setTransform(1, 0, 0, 1, 0); + } + @assert throws TypeError ctx.createLinearGradient(); + @assert throws TypeError ctx.createLinearGradient(0); + @assert throws TypeError ctx.createLinearGradient(0, 0); + @assert throws TypeError ctx.createLinearGradient(0, 0, 1); + @assert throws TypeError ctx.createRadialGradient(); + @assert throws TypeError ctx.createRadialGradient(0); + @assert throws TypeError ctx.createRadialGradient(0, 0); + @assert throws TypeError ctx.createRadialGradient(0, 0, 1); + @assert throws TypeError ctx.createRadialGradient(0, 0, 1, 0); + @assert throws TypeError ctx.createRadialGradient(0, 0, 1, 0, 0); + @assert throws TypeError ctx.createPattern(canvas); + @assert throws TypeError ctx.clearRect(); + @assert throws TypeError ctx.clearRect(0); + @assert throws TypeError ctx.clearRect(0, 0); + @assert throws TypeError ctx.clearRect(0, 0, 0); + @assert throws TypeError ctx.fillRect(); + @assert throws TypeError ctx.fillRect(0); + @assert throws TypeError ctx.fillRect(0, 0); + @assert throws TypeError ctx.fillRect(0, 0, 0); + @assert throws TypeError ctx.strokeRect(); + @assert throws TypeError ctx.strokeRect(0); + @assert throws TypeError ctx.strokeRect(0, 0); + @assert throws TypeError ctx.strokeRect(0, 0, 0); + @assert throws TypeError ctx.moveTo(); + @assert throws TypeError ctx.moveTo(0); + @assert throws TypeError ctx.lineTo(); + @assert throws TypeError ctx.lineTo(0); + @assert throws TypeError ctx.quadraticCurveTo(); + @assert throws TypeError ctx.quadraticCurveTo(0); + @assert throws TypeError ctx.quadraticCurveTo(0, 0); + @assert throws TypeError ctx.quadraticCurveTo(0, 0, 0); + @assert throws TypeError ctx.bezierCurveTo(); + @assert throws TypeError ctx.bezierCurveTo(0); + @assert throws TypeError ctx.bezierCurveTo(0, 0); + @assert throws TypeError ctx.bezierCurveTo(0, 0, 0); + @assert throws TypeError ctx.bezierCurveTo(0, 0, 0, 0); + @assert throws TypeError ctx.bezierCurveTo(0, 0, 0, 0, 0); + @assert throws TypeError ctx.arcTo(); + @assert throws TypeError ctx.arcTo(0); + @assert throws TypeError ctx.arcTo(0, 0); + @assert throws TypeError ctx.arcTo(0, 0, 0); + @assert throws TypeError ctx.arcTo(0, 0, 0, 0); + @assert throws TypeError ctx.rect(); + @assert throws TypeError ctx.rect(0); + @assert throws TypeError ctx.rect(0, 0); + @assert throws TypeError ctx.rect(0, 0, 0); + @assert throws TypeError ctx.arc(); + @assert throws TypeError ctx.arc(0); + @assert throws TypeError ctx.arc(0, 0); + @assert throws TypeError ctx.arc(0, 0, 1); + @assert throws TypeError ctx.arc(0, 0, 1, 0); + // (6th argument to arc is optional) + if (ctx.isPointInPath) { + @assert throws TypeError ctx.isPointInPath(); + @assert throws TypeError ctx.isPointInPath(0); + } + if (ctx.drawFocusRing) { + @assert throws TypeError ctx.drawFocusRing(); + @assert throws TypeError ctx.drawFocusRing(canvas); + @assert throws TypeError ctx.drawFocusRing(canvas, 0); + } + if (ctx.fillText) { + @assert throws TypeError ctx.fillText(); + @assert throws TypeError ctx.fillText('test'); + @assert throws TypeError ctx.fillText('test', 0); + @assert throws TypeError ctx.strokeText(); + @assert throws TypeError ctx.strokeText('test'); + @assert throws TypeError ctx.strokeText('test', 0); + @assert throws TypeError ctx.measureText(); + } + @assert throws TypeError ctx.drawImage(); + @assert throws TypeError ctx.drawImage(canvas); + @assert throws TypeError ctx.drawImage(canvas, 0); + // TODO: n >= 3 args on drawImage could be either a valid overload, + // or too few for another overload, or too many for another + // overload - what should happen? + if (ctx.createImageData) { + @assert throws TypeError ctx.createImageData(); + @assert throws TypeError ctx.createImageData(1); + } + if (ctx.getImageData) { + @assert throws TypeError ctx.getImageData(); + @assert throws TypeError ctx.getImageData(0); + @assert throws TypeError ctx.getImageData(0, 0); + @assert throws TypeError ctx.getImageData(0, 0, 1); + } + if (ctx.putImageData) { + var imgdata = ctx.getImageData(0, 0, 1, 1); + @assert throws TypeError ctx.putImageData(); + @assert throws TypeError ctx.putImageData(imgdata); + @assert throws TypeError ctx.putImageData(imgdata, 0); + } + var g = ctx.createLinearGradient(0, 0, 0, 0); + @assert throws TypeError g.addColorStop(); @moz-todo + @assert throws TypeError g.addColorStop(0); @moz-todo + +- name: 2d.coordinatespace + desc: Coordinate space goes from top-left to bottom-right + notes: This should not be upside down. + manual: We can't tell that getPixelData isn't using the wrong coordinate space too. + testing: + - 2d.coordinatespace + code: | + ctx.fillStyle = '#00f'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0ff'; + ctx.fillRect(0, 0, 50, 25); + @assert pixel 25,12 == 0,255,255,255; + @assert pixel 75,12 == 0,0,255,255; + @assert pixel 25,37 == 0,0,255,255; + @assert pixel 75,37 == 0,0,255,255; + expected: | + size 100 50 + cr.set_source_rgb(0, 0, 1) + cr.rectangle(0, 0, 100, 50) + cr.fill() + cr.set_source_rgb(0, 1, 1) + cr.rectangle(0, 0, 50, 25) + cr.fill() + +- name: 2d.scaled + desc: CSS-scaled canvases get drawn correctly + canvas: 'width="50" height="25" style="width: 100px; height: 50px"' + manual: + code: | + ctx.fillStyle = '#00f'; + ctx.fillRect(0, 0, 50, 25); + ctx.fillStyle = '#0ff'; + ctx.fillRect(0, 0, 25, 10); + expected: | + size 100 50 + cr.set_source_rgb(0, 0, 1) + cr.rectangle(0, 0, 100, 50) + cr.fill() + cr.set_source_rgb(0, 1, 1) + cr.rectangle(0, 0, 50, 20) + cr.fill() + +- name: 2d.canvas.reference + desc: CanvasRenderingContext2D.canvas refers back to its canvas + testing: + - 2d.canvas + code: | + @assert ctx.canvas === canvas; + +- name: 2d.canvas.readonly + desc: CanvasRenderingContext2D.canvas is readonly + testing: + - 2d.canvas.attribute + code: | + var c = document.createElement('canvas'); + var d = ctx.canvas; + @assert c !== d; + ctx.canvas = c; + @assert ctx.canvas === d; + +- meta: | + state = [ # some non-default values to test with + ('strokeStyle', '"#ff0000"'), + ('fillStyle', '"#ff0000"'), + ('globalAlpha', 0.5), + ('lineWidth', 0.5), + ('lineCap', '"round"'), + ('lineJoin', '"round"'), + ('miterLimit', 0.5), + ('shadowOffsetX', 5), + ('shadowOffsetY', 5), + ('shadowBlur', 5), + ('shadowColor', '"#ff0000"'), + ('globalCompositeOperation', '"copy"'), + ('font', '"25px serif"'), + ('textAlign', '"center"'), + ('textBaseline', '"bottom"'), + ] + for key,value in state: + tests.append( { + 'name': '2d.state.saverestore.%s' % key, + 'desc': 'save()/restore() works for %s' % key, + 'testing': [ '2d.state.%s' % key ], + 'code': + """// Test that restore() undoes any modifications + var old = ctx.%(key)s; + ctx.save(); + ctx.%(key)s = %(value)s; + ctx.restore(); + @assert ctx.%(key)s === old; + + // Also test that save() doesn't modify the values + ctx.%(key)s = %(value)s; + old = ctx.%(key)s; + // we're not interested in failures caused by get(set(x)) != x (e.g. + // from rounding), so compare against 'old' instead of against %(value)s + ctx.save(); + @assert ctx.%(key)s === old; + ctx.restore(); + """ % { 'key':key, 'value':value } + } ) + + tests.append( { + 'name': 'initial.reset.2dstate', + 'desc': 'Resetting the canvas state resets 2D state variables', + 'testing': [ 'initial.reset' ], + 'code': + """canvas.width = 100; + var default_val; + """ + "".join( + """ + default_val = ctx.%(key)s; + ctx.%(key)s = %(value)s; + canvas.width = 100; + @assert ctx.%(key)s === default_val; + """ % { 'key':key, 'value':value } + for key,value in state), + } ) + +- name: 2d.state.saverestore.transformation + desc: save()/restore() affects the current transformation matrix + testing: + - 2d.state.transformation + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.save(); + ctx.translate(200, 0); + ctx.restore(); + ctx.fillStyle = '#f00'; + ctx.fillRect(-200, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.state.saverestore.clip + desc: save()/restore() affects the clipping path + testing: + - 2d.state.clip + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.save(); + ctx.rect(0, 0, 1, 1); + ctx.clip(); + ctx.restore(); + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.state.saverestore.path + desc: save()/restore() does not affect the current path + testing: + - 2d.state.path + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.save(); + ctx.rect(0, 0, 100, 50); + ctx.restore(); + ctx.fillStyle = '#0f0'; + ctx.fill(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.state.saverestore.bitmap + desc: save()/restore() does not affect the current bitmap + testing: + - 2d.state.bitmap + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.save(); + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.restore(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.state.saverestore.stack + desc: save()/restore() can be nested as a stack + testing: + - 2d.state.save + - 2d.state.restore + code: | + ctx.lineWidth = 1; + ctx.save(); + ctx.lineWidth = 2; + ctx.save(); + ctx.lineWidth = 3; + @assert ctx.lineWidth === 3; + ctx.restore(); + @assert ctx.lineWidth === 2; + ctx.restore(); + @assert ctx.lineWidth === 1; + +- name: 2d.state.saverestore.stackdepth + desc: save()/restore() stack depth is not unreasonably limited + testing: + - 2d.state.save + - 2d.state.restore + code: | + var limit = 512; + for (var i = 1; i < limit; ++i) + { + ctx.save(); + ctx.lineWidth = i; + } + for (var i = limit-1; i > 0; --i) + { + @assert ctx.lineWidth === i; + ctx.restore(); + } + +- name: 2d.state.saverestore.underflow + desc: restore() with an empty stack has no effect + testing: + - 2d.state.restore.underflow + code: | + for (var i = 0; i < 16; ++i) + ctx.restore(); + ctx.lineWidth = 0.5; + ctx.restore(); + @assert ctx.lineWidth === 0.5; + + +- name: 2d.transformation.order + desc: Transformations are applied in the right order + testing: + - 2d.transformation.order + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.scale(2, 1); + ctx.rotate(Math.PI / 2); + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, -50, 50, 50); + @assert pixel 75,25 == 0,255,0,255; + expected: green + + +- name: 2d.transformation.scale.basic + desc: scale() works + testing: + - 2d.transformation.scale + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.scale(2, 4); + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 50, 12.5); + @assert pixel 90,40 == 0,255,0,255; + expected: green + +- name: 2d.transformation.scale.zero + desc: scale() with a scale factor of zero works + testing: + - 2d.transformation.scale + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.save(); + ctx.translate(50, 0); + ctx.scale(0, 1); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.restore(); + + ctx.save(); + ctx.translate(0, 25); + ctx.scale(1, 0); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.restore(); + + canvas.toDataURL(); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.transformation.scale.negative + desc: scale() with negative scale factors works + testing: + - 2d.transformation.scale + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.save(); + ctx.scale(-1, 1); + ctx.fillStyle = '#0f0'; + ctx.fillRect(-50, 0, 50, 50); + ctx.restore(); + + ctx.save(); + ctx.scale(1, -1); + ctx.fillStyle = '#0f0'; + ctx.fillRect(50, -50, 50, 50); + ctx.restore(); + @assert pixel 25,25 == 0,255,0,255; + @assert pixel 75,25 == 0,255,0,255; + expected: green + +- name: 2d.transformation.scale.large + desc: scale() with large scale factors works + notes: Not really that large at all, but it hits the limits in Firefox. + testing: + - 2d.transformation.scale + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.scale(1e5, 1e5); + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 1, 1); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.transformation.scale.nonfinite + desc: scale() with Infinity/NaN is ignored + testing: + - 2d.nonfinite + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.translate(100, 10); + @nonfinite ctx.scale(<0.1 Infinity -Infinity NaN>, <0.1 Infinity -Infinity NaN>); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(-100, -10, 100, 50); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.transformation.scale.multiple + desc: Multiple scale()s combine + testing: + - 2d.transformation.scale.multiple + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.scale(Math.sqrt(2), Math.sqrt(2)); + ctx.scale(Math.sqrt(2), Math.sqrt(2)); + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 50, 25); + @assert pixel 90,40 == 0,255,0,255; + expected: green + + +- name: 2d.transformation.rotate.zero + desc: rotate() by 0 does nothing + testing: + - 2d.transformation.rotate + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.rotate(0); + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.transformation.rotate.radians + desc: rotate() uses radians + testing: + - 2d.transformation.rotate.radians + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.rotate(Math.PI); // should fail obviously if this is 3.1 degrees + ctx.fillStyle = '#0f0'; + ctx.fillRect(-100, -50, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.transformation.rotate.direction + desc: rotate() is clockwise + testing: + - 2d.transformation.rotate.direction + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.rotate(Math.PI / 2); + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, -100, 50, 100); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.transformation.rotate.wrap + desc: rotate() wraps large positive values correctly + testing: + - 2d.transformation.rotate + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.rotate(Math.PI * (1 + 4096)); // == pi (mod 2*pi) + // We need about pi +/- 0.001 in order to get correct-looking results + // 32-bit floats can store pi*4097 with precision 2^-10, so that should + // be safe enough on reasonable implementations + ctx.fillStyle = '#0f0'; + ctx.fillRect(-100, -50, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,2 == 0,255,0,255; + @assert pixel 98,47 == 0,255,0,255; + expected: green + +- name: 2d.transformation.rotate.wrapnegative + desc: rotate() wraps large negative values correctly + testing: + - 2d.transformation.rotate + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.rotate(-Math.PI * (1 + 4096)); + ctx.fillStyle = '#0f0'; + ctx.fillRect(-100, -50, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,2 == 0,255,0,255; + @assert pixel 98,47 == 0,255,0,255; + expected: green + +- name: 2d.transformation.rotate.nonfinite + desc: rotate() with Infinity/NaN is ignored + testing: + - 2d.nonfinite + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.translate(100, 10); + @nonfinite ctx.rotate(<0.1 Infinity -Infinity NaN>); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(-100, -10, 100, 50); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.transformation.translate.basic + desc: translate() works + testing: + - 2d.transformation.translate + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.translate(100, 50); + ctx.fillStyle = '#0f0'; + ctx.fillRect(-100, -50, 100, 50); + @assert pixel 90,40 == 0,255,0,255; + expected: green + +- name: 2d.transformation.translate.nonfinite + desc: translate() with Infinity/NaN is ignored + testing: + - 2d.nonfinite + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.translate(100, 10); + @nonfinite ctx.translate(<0.1 Infinity -Infinity NaN>, <0.1 Infinity -Infinity NaN>); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(-100, -10, 100, 50); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + + +- name: 2d.transformation.transform.identity + desc: transform() with the identity matrix does nothing + testing: + - 2d.transformation.transform + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.transform(1,0, 0,1, 0,0); + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.transformation.transform.skewed + desc: transform() with skewy matrix transforms correctly + testing: + - 2d.transformation.transform + code: | + // Create green with a red square ring inside it + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.fillRect(20, 10, 60, 30); + ctx.fillStyle = '#0f0'; + ctx.fillRect(40, 20, 20, 10); + + // Draw a skewed shape to fill that gap, to make sure it is aligned correctly + ctx.transform(1,4, 2,3, 5,6); + // Post-transform coordinates: + // [[20,10],[80,10],[80,40],[20,40],[20,10],[40,20],[40,30],[60,30],[60,20],[40,20],[20,10]]; + // Hence pre-transform coordinates: + var pts=[[-7.4,11.2],[-43.4,59.2],[-31.4,53.2],[4.6,5.2],[-7.4,11.2], + [-15.4,25.2],[-11.4,23.2],[-23.4,39.2],[-27.4,41.2],[-15.4,25.2], + [-7.4,11.2]]; + ctx.beginPath(); + ctx.moveTo(pts[0][0], pts[0][1]); + for (var i = 0; i < pts.length; ++i) + ctx.lineTo(pts[i][0], pts[i][1]); + ctx.fill(); + @assert pixel 21,11 == 0,255,0,255; + @assert pixel 79,11 == 0,255,0,255; + @assert pixel 21,39 == 0,255,0,255; + @assert pixel 79,39 == 0,255,0,255; + @assert pixel 39,19 == 0,255,0,255; + @assert pixel 61,19 == 0,255,0,255; + @assert pixel 39,31 == 0,255,0,255; + @assert pixel 61,31 == 0,255,0,255; + expected: green + +- name: 2d.transformation.transform.multiply + desc: transform() multiplies the CTM + testing: + - 2d.transformation.transform.multiply + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.transform(1,2, 3,4, 5,6); + ctx.transform(-2,1, 3/2,-1/2, 1,-2); + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.transformation.transform.nonfinite + desc: transform() with Infinity/NaN is ignored + testing: + - 2d.nonfinite + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.translate(100, 10); + @nonfinite ctx.transform(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(-100, -10, 100, 50); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + + +- name: 2d.transformation.setTransform.skewed + testing: + - 2d.transformation.setTransform + code: | + // Create green with a red square ring inside it + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.fillRect(20, 10, 60, 30); + ctx.fillStyle = '#0f0'; + ctx.fillRect(40, 20, 20, 10); + + // Draw a skewed shape to fill that gap, to make sure it is aligned correctly + ctx.setTransform(1,4, 2,3, 5,6); + // Post-transform coordinates: + // [[20,10],[80,10],[80,40],[20,40],[20,10],[40,20],[40,30],[60,30],[60,20],[40,20],[20,10]]; + // Hence pre-transform coordinates: + var pts=[[-7.4,11.2],[-43.4,59.2],[-31.4,53.2],[4.6,5.2],[-7.4,11.2], + [-15.4,25.2],[-11.4,23.2],[-23.4,39.2],[-27.4,41.2],[-15.4,25.2], + [-7.4,11.2]]; + ctx.beginPath(); + ctx.moveTo(pts[0][0], pts[0][1]); + for (var i = 0; i < pts.length; ++i) + ctx.lineTo(pts[i][0], pts[i][1]); + ctx.fill(); + @assert pixel 21,11 == 0,255,0,255; + @assert pixel 79,11 == 0,255,0,255; + @assert pixel 21,39 == 0,255,0,255; + @assert pixel 79,39 == 0,255,0,255; + @assert pixel 39,19 == 0,255,0,255; + @assert pixel 61,19 == 0,255,0,255; + @assert pixel 39,31 == 0,255,0,255; + @assert pixel 61,31 == 0,255,0,255; + expected: green + +- name: 2d.transformation.setTransform.multiple + testing: + - 2d.transformation.setTransform.identity + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.setTransform(1/2,0, 0,1/2, 0,0); + ctx.setTransform(2,0, 0,2, 0,0); + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 50, 25); + @assert pixel 75,35 == 0,255,0,255; + expected: green + +- name: 2d.transformation.setTransform.nonfinite + desc: setTransform() with Infinity/NaN is ignored + testing: + - 2d.nonfinite + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.translate(100, 10); + @nonfinite ctx.setTransform(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(-100, -10, 100, 50); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + + +- name: 2d.composite.globalAlpha.range + testing: + - 2d.composite.globalAlpha.range + code: | + ctx.globalAlpha = 0.5; + var a = ctx.globalAlpha; // might not be exactly 0.5, if it is rounded/quantised, so remember for future comparisons + ctx.globalAlpha = 1.1; + @assert ctx.globalAlpha === a; + ctx.globalAlpha = -0.1; + @assert ctx.globalAlpha === a; + ctx.globalAlpha = 0; + @assert ctx.globalAlpha === 0; + ctx.globalAlpha = 1; + @assert ctx.globalAlpha === 1; + +- name: 2d.composite.globalAlpha.invalid + testing: + - 2d.composite.globalAlpha.range + code: | + ctx.globalAlpha = 0.5; + var a = ctx.globalAlpha; // might not be exactly 0.5, if it is rounded/quantised, so remember for future comparisons + ctx.globalAlpha = Infinity; + @assert ctx.globalAlpha === a; + ctx.globalAlpha = -Infinity; + @assert ctx.globalAlpha === a; + ctx.globalAlpha = NaN; + @assert ctx.globalAlpha === a; + +- name: 2d.composite.globalAlpha.default + testing: + - 2d.composite.globalAlpha.default + code: | + @assert ctx.globalAlpha === 1.0; + +- name: 2d.composite.globalAlpha.fill + testing: + - 2d.composite.globalAlpha.shape + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.globalAlpha = 0.01; // avoid any potential alpha=0 optimisations + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 ==~ 2,253,0,255; + expected: green + +- name: 2d.composite.globalAlpha.image + testing: + - 2d.composite.globalAlpha.image + images: + - red.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.globalAlpha = 0.01; // avoid any potential alpha=0 optimisations + ctx.drawImage(document.getElementById('red.png'), 0, 0); + @assert pixel 50,25 ==~ 2,253,0,255; + expected: green + +- name: 2d.composite.globalAlpha.canvas + testing: + - 2d.composite.globalAlpha.image + code: | + var canvas2 = document.createElement('canvas'); + canvas2.width = 100; + canvas2.height = 50; + var ctx2 = canvas2.getContext('2d'); + ctx2.fillStyle = '#f00'; + ctx2.fillRect(0, 0, 100, 50); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.globalAlpha = 0.01; // avoid any potential alpha=0 optimisations + ctx.drawImage(canvas2, 0, 0); + @assert pixel 50,25 ==~ 2,253,0,255; + expected: green + +- name: 2d.composite.globalAlpha.imagepattern + testing: + - 2d.composite.globalAlpha.image + images: + - red.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = ctx.createPattern(document.getElementById('red.png'), 'no-repeat'); + ctx.globalAlpha = 0.01; // avoid any potential alpha=0 optimisations + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 ==~ 2,253,0,255; + expected: green + +- name: 2d.composite.globalAlpha.canvaspattern + testing: + - 2d.composite.globalAlpha.image + code: | + var canvas2 = document.createElement('canvas'); + canvas2.width = 100; + canvas2.height = 50; + var ctx2 = canvas2.getContext('2d'); + ctx2.fillStyle = '#f00'; + ctx2.fillRect(0, 0, 100, 50); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = ctx.createPattern(canvas2, 'no-repeat'); + ctx.globalAlpha = 0.01; // avoid any potential alpha=0 optimisations + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 ==~ 2,253,0,255; + expected: green + + +- meta: | + # Composite operation tests + # <http://lists.whatwg.org/htdig.cgi/whatwg-whatwg.org/2007-March/010608.html> + ops = [ + # name FA FB + ('source-over', '1', '1-aA'), + ('destination-over', '1-aB', '1'), + ('source-in', 'aB', '0'), + ('destination-in', '0', 'aA'), + ('source-out', '1-aB', '0'), + ('destination-out', '0', '1-aA'), + ('source-atop', 'aB', '1-aA'), + ('destination-atop', '1-aB', 'aA'), + ('xor', '1-aB', '1-aA'), + ('copy', '1', '0'), + ('lighter', '1', '1'), + ] + + # The ones that change the output when src = (0,0,0,0): + ops_trans = [ 'source-in', 'destination-in', 'source-out', 'destination-atop', 'copy' ]; + + def calc_output((RA, GA, BA, aA), (RB, GB, BB, aB), FA_code, FB_code): + rA, gA, bA = RA*aA, GA*aA, BA*aA + rB, gB, bB = RB*aB, GB*aB, BB*aB + + FA = eval(FA_code) + FB = eval(FB_code) + + rO = rA*FA + rB*FB + gO = gA*FA + gB*FB + bO = bA*FA + bB*FB + aO = aA*FA + aB*FB + + rO = min(255, rO) + gO = min(255, gO) + bO = min(255, bO) + aO = min(1, aO) + + if aO: + RO = rO / aO + GO = gO / aO + BO = bO / aO + else: RO = GO = BO = 0 + + return (RO, GO, BO, aO) + + def to_test((r,g,b,a)): + return '%d,%d,%d,%d' % (round(r), round(g), round(b), round(a*255)) + def to_cairo((r,g,b,a)): + return '%f,%f,%f,%f' % (r/255., g/255., b/255., a) + + for (name, src, dest) in [ + ('solid', (255, 255, 0, 1.0), (0, 255, 255, 1.0)), + ('transparent', (0, 0, 255, 0.75), (0, 255, 0, 0.5)), + # catches the atop, xor and lighter bugs in Opera 9.10 + ]: + for op, FA_code, FB_code in ops: + expected = calc_output(src, dest, FA_code, FB_code) + tests.append( { + 'name': '2d.composite.%s.%s' % (name, op), + 'testing': [ '2d.composite.%s' % op ], + 'code': """ + ctx.fillStyle = 'rgba%s'; + ctx.fillRect(0, 0, 100, 50); + ctx.globalCompositeOperation = '%s'; + ctx.fillStyle = 'rgba%s'; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 ==~ %s +/- 5; + """ % (dest, op, src, to_test(expected)), + 'expected': """size 100 50 + cr.set_source_rgba(%s) + cr.rectangle(0, 0, 100, 50) + cr.fill() + """ % to_cairo(expected), + } ) + + for (name, src, dest) in [ ('image', (255, 255, 0, 0.75), (0, 255, 255, 0.5)) ]: + for op, FA_code, FB_code in ops: + expected = calc_output(src, dest, FA_code, FB_code) + tests.append( { + 'name': '2d.composite.%s.%s' % (name, op), + 'testing': [ '2d.composite.%s' % op ], + 'images': [ 'yellow75.png' ], + 'code': """ + ctx.fillStyle = 'rgba%s'; + ctx.fillRect(0, 0, 100, 50); + ctx.globalCompositeOperation = '%s'; + ctx.drawImage(document.getElementById('yellow75.png'), 0, 0); + @assert pixel 50,25 ==~ %s +/- 5; + """ % (dest, op, to_test(expected)), + 'expected': """size 100 50 + cr.set_source_rgba(%s) + cr.rectangle(0, 0, 100, 50) + cr.fill() + """ % to_cairo(expected), + } ) + + for (name, src, dest) in [ ('canvas', (255, 255, 0, 0.75), (0, 255, 255, 0.5)) ]: + for op, FA_code, FB_code in ops: + expected = calc_output(src, dest, FA_code, FB_code) + tests.append( { + 'name': '2d.composite.%s.%s' % (name, op), + 'testing': [ '2d.composite.%s' % op ], + 'images': [ 'yellow75.png' ], + 'code': """ + var canvas2 = document.createElement('canvas'); + canvas2.width = canvas.width; + canvas2.height = canvas.height; + var ctx2 = canvas2.getContext('2d'); + ctx2.drawImage(document.getElementById('yellow75.png'), 0, 0); + ctx.fillStyle = 'rgba%s'; + ctx.fillRect(0, 0, 100, 50); + ctx.globalCompositeOperation = '%s'; + ctx.drawImage(canvas2, 0, 0); + @assert pixel 50,25 ==~ %s +/- 5; + """ % (dest, op, to_test(expected)), + 'expected': """size 100 50 + cr.set_source_rgba(%s) + cr.rectangle(0, 0, 100, 50) + cr.fill() + """ % to_cairo(expected), + } ) + + + for (name, src, dest) in [ ('uncovered.fill', (0, 0, 255, 0.75), (0, 255, 0, 0.5)) ]: + for op, FA_code, FB_code in ops: + if op not in ops_trans: continue + expected0 = calc_output((0,0,0,0.0), dest, FA_code, FB_code) + tests.append( { + 'name': '2d.composite.%s.%s' % (name, op), + 'desc': 'fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.', + 'testing': [ '2d.composite.%s' % op ], + 'code': """ + ctx.fillStyle = 'rgba%s'; + ctx.fillRect(0, 0, 100, 50); + ctx.globalCompositeOperation = '%s'; + ctx.fillStyle = 'rgba%s'; + ctx.translate(0, 25); + ctx.fillRect(0, 50, 100, 50); + @assert pixel 50,25 ==~ %s +/- 5; + """ % (dest, op, src, to_test(expected0)), + 'expected': """size 100 50 + cr.set_source_rgba(%s) + cr.rectangle(0, 0, 100, 50) + cr.fill() + """ % (to_cairo(expected0)), + } ) + + for (name, src, dest) in [ ('uncovered.image', (255, 255, 0, 1.0), (0, 255, 255, 0.5)) ]: + for op, FA_code, FB_code in ops: + if op not in ops_trans: continue + expected0 = calc_output((0,0,0,0.0), dest, FA_code, FB_code) + tests.append( { + 'name': '2d.composite.%s.%s' % (name, op), + 'desc': 'drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.', + 'testing': [ '2d.composite.%s' % op ], + 'images': [ 'yellow.png' ], + 'code': """ + ctx.fillStyle = 'rgba%s'; + ctx.fillRect(0, 0, 100, 50); + ctx.globalCompositeOperation = '%s'; + ctx.drawImage(document.getElementById('yellow.png'), 40, 40, 10, 10, 40, 50, 10, 10); + @assert pixel 15,15 ==~ %s +/- 5; + @assert pixel 50,25 ==~ %s +/- 5; + """ % (dest, op, to_test(expected0), to_test(expected0)), + 'expected': """size 100 50 + cr.set_source_rgba(%s) + cr.rectangle(0, 0, 100, 50) + cr.fill() + """ % (to_cairo(expected0)), + } ) + + for (name, src, dest) in [ ('uncovered.nocontext', (255, 255, 0, 1.0), (0, 255, 255, 0.5)) ]: + for op, FA_code, FB_code in ops: + if op not in ops_trans: continue + expected0 = calc_output((0,0,0,0.0), dest, FA_code, FB_code) + tests.append( { + 'name': '2d.composite.%s.%s' % (name, op), + 'desc': 'drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.', + 'testing': [ '2d.composite.%s' % op ], + 'code': """ + ctx.fillStyle = 'rgba%s'; + ctx.fillRect(0, 0, 100, 50); + ctx.globalCompositeOperation = '%s'; + var canvas2 = document.createElement('canvas'); + ctx.drawImage(canvas2, 0, 0); + @assert pixel 50,25 ==~ %s +/- 5; + """ % (dest, op, to_test(expected0)), + 'expected': """size 100 50 + cr.set_source_rgba(%s) + cr.rectangle(0, 0, 100, 50) + cr.fill() + """ % (to_cairo(expected0)), + } ) + + for (name, src, dest) in [ ('uncovered.pattern', (255, 255, 0, 1.0), (0, 255, 255, 0.5)) ]: + for op, FA_code, FB_code in ops: + if op not in ops_trans: continue + expected0 = calc_output((0,0,0,0.0), dest, FA_code, FB_code) + tests.append( { + 'name': '2d.composite.%s.%s' % (name, op), + 'desc': 'Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.', + 'testing': [ '2d.composite.%s' % op ], + 'images': [ 'yellow.png' ], + 'code': """ + ctx.fillStyle = 'rgba%s'; + ctx.fillRect(0, 0, 100, 50); + ctx.globalCompositeOperation = '%s'; + ctx.fillStyle = ctx.createPattern(document.getElementById('yellow.png'), 'no-repeat'); + ctx.fillRect(0, 50, 100, 50); + @assert pixel 50,25 ==~ %s +/- 5; + """ % (dest, op, to_test(expected0)), + 'expected': """size 100 50 + cr.set_source_rgba(%s) + cr.rectangle(0, 0, 100, 50) + cr.fill() + """ % (to_cairo(expected0)), + } ) + + for op, FA_code, FB_code in ops: + tests.append( { + 'name': '2d.composite.clip.%s' % (op), + 'desc': 'fill() does not affect pixels outside the clip region.', + 'testing': [ '2d.composite.%s' % op ], + 'code': """ + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.globalCompositeOperation = '%s'; + ctx.rect(-20, -20, 10, 10); + ctx.clip(); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 50, 50); + @assert pixel 25,25 == 0,255,0,255; + @assert pixel 75,25 == 0,255,0,255; + """ % (op), + 'expected': 'green' + } ) + +- name: 2d.composite.operation.get + testing: + - 2d.composite.operation + code: | + var modes = ['source-atop', 'source-in', 'source-out', 'source-over', + 'destination-atop', 'destination-in', 'destination-out', 'destination-over', + 'lighter', 'copy', 'xor']; + for (var i = 0; i < modes.length; ++i) + { + ctx.globalCompositeOperation = modes[i]; + @assert ctx.globalCompositeOperation === modes[i]; + } + +- name: 2d.composite.operation.unrecognised + testing: + - 2d.composite.operation.unrecognised + code: | + ctx.globalCompositeOperation = 'xor'; + ctx.globalCompositeOperation = 'nonexistent'; + @assert ctx.globalCompositeOperation === 'xor'; + +- name: 2d.composite.operation.darker + testing: + - 2d.composite.operation.unrecognised + code: | + ctx.globalCompositeOperation = 'xor'; + ctx.globalCompositeOperation = 'darker'; + @assert ctx.globalCompositeOperation === 'xor'; + +- name: 2d.composite.operation.over + testing: + - 2d.composite.operation.unrecognised + code: | + ctx.globalCompositeOperation = 'xor'; + ctx.globalCompositeOperation = 'over'; + @assert ctx.globalCompositeOperation === 'xor'; + +- name: 2d.composite.operation.clear + testing: + - 2d.composite.operation.unrecognised + code: | + ctx.globalCompositeOperation = 'xor'; + ctx.globalCompositeOperation = 'clear'; + @assert ctx.globalCompositeOperation === 'xor'; + +- name: 2d.composite.operation.highlight + testing: + - 2d.composite.operation.unrecognised + code: | + ctx.globalCompositeOperation = 'xor'; + ctx.globalCompositeOperation = 'highlight'; + @assert ctx.globalCompositeOperation === 'xor'; + +- name: 2d.composite.operation.nullsuffix + testing: + - 2d.composite.operation.exact + code: | + ctx.globalCompositeOperation = 'xor'; + ctx.globalCompositeOperation = 'source-over\0'; + @assert ctx.globalCompositeOperation === 'xor'; + +- name: 2d.composite.operation.casesensitive + testing: + - 2d.composite.operation.casesensitive + code: | + ctx.globalCompositeOperation = 'xor'; + ctx.globalCompositeOperation = 'Source-over'; + @assert ctx.globalCompositeOperation === 'xor'; + +- name: 2d.composite.operation.default + testing: + - 2d.composite.operation.default + code: | + @assert ctx.globalCompositeOperation === 'source-over'; + + +- meta: | + # Colour parsing tests + + # Try most of the CSS3 Color <color> values - http://www.w3.org/TR/css3-color/#colorunits + big_float = '1' + ('0' * 39) + big_double = '1' + ('0' * 310) + for name, string, r,g,b,a, notes in [ + ('html4', 'limE', 0,255,0,255, ""), + ('hex3', '#0f0', 0,255,0,255, ""), + ('hex4', '#0f0f', 0,255,0,255, ""), + ('hex6', '#00fF00', 0,255,0,255, ""), + ('hex8', '#00ff00ff', 0,255,0,255, ""), + ('rgb-num', 'rgb(0,255,0)', 0,255,0,255, ""), + ('rgb-clamp-1', 'rgb(-1000, 1000, -1000)', 0,255,0,255, 'Assumes colours are clamped to [0,255].'), + ('rgb-clamp-2', 'rgb(-200%, 200%, -200%)', 0,255,0,255, 'Assumes colours are clamped to [0,255].'), + ('rgb-clamp-3', 'rgb(-2147483649, 4294967298, -18446744073709551619)', 0,255,0,255, 'Assumes colours are clamped to [0,255].'), + ('rgb-clamp-4', 'rgb(-'+big_float+', '+big_float+', -'+big_float+')', 0,255,0,255, 'Assumes colours are clamped to [0,255].'), + ('rgb-clamp-5', 'rgb(-'+big_double+', '+big_double+', -'+big_double+')', 0,255,0,255, 'Assumes colours are clamped to [0,255].'), + ('rgb-percent', 'rgb(0% ,100% ,0%)', 0,255,0,255, 'CSS3 Color says "The integer value 255 corresponds to 100%". (In particular, it is not 254...)'), + ('rgb-eof', 'rgb(0, 255, 0', 0,255,0,255, ""), # see CSS2.1 4.2 "Unexpected end of style sheet" + ('rgba-solid-1', 'rgba( 0 , 255 , 0 , 1 )', 0,255,0,255, ""), + ('rgba-solid-2', 'rgba( 0 , 255 , 0 , 1.0 )', 0,255,0,255, ""), + ('rgba-solid-3', 'rgba( 0 , 255 , 0 , +1 )', 0,255,0,255, ""), + ('rgba-solid-4', 'rgba( -0 , 255 , +0 , 1 )', 0,255,0,255, ""), + ('rgba-num-1', 'rgba( 0 , 255 , 0 , .499 )', 0,255,0,127, ""), + ('rgba-num-2', 'rgba( 0 , 255 , 0 , 0.499 )', 0,255,0,127, ""), + ('rgba-percent', 'rgba(0%,100%,0%,0.499)', 0,255,0,127, ""), # 0.499*255 rounds to 127, both down and nearest, so it should be safe + ('rgba-clamp-1', 'rgba(0, 255, 0, -2)', 0,0,0,0, ""), + ('rgba-clamp-2', 'rgba(0, 255, 0, 2)', 0,255,0,255, ""), + ('rgba-eof', 'rgba(0, 255, 0, 1', 0,255,0,255, ""), + ('transparent-1', 'transparent', 0,0,0,0, ""), + ('transparent-2', 'TrAnSpArEnT', 0,0,0,0, ""), + ('hsl-1', 'hsl(120, 100%, 50%)', 0,255,0,255, ""), + ('hsl-2', 'hsl( -240 , 100% , 50% )', 0,255,0,255, ""), + ('hsl-3', 'hsl(360120, 100%, 50%)', 0,255,0,255, ""), + ('hsl-4', 'hsl(-360240, 100%, 50%)', 0,255,0,255, ""), + ('hsl-5', 'hsl(120.0, 100.0%, 50.0%)', 0,255,0,255, ""), + ('hsl-6', 'hsl(+120, +100%, +50%)', 0,255,0,255, ""), + ('hsl-clamp-1', 'hsl(120, 200%, 50%)', 0,255,0,255, ""), + ('hsl-clamp-2', 'hsl(120, -200%, 49.9%)', 127,127,127,255, ""), + ('hsl-clamp-3', 'hsl(120, 100%, 200%)', 255,255,255,255, ""), + ('hsl-clamp-4', 'hsl(120, 100%, -200%)', 0,0,0,255, ""), + ('hsla-1', 'hsla(120, 100%, 50%, 0.499)', 0,255,0,127, ""), + ('hsla-2', 'hsla( 120.0 , 100.0% , 50.0% , 1 )', 0,255,0,255, ""), + ('hsla-clamp-1', 'hsla(120, 200%, 50%, 1)', 0,255,0,255, ""), + ('hsla-clamp-2', 'hsla(120, -200%, 49.9%, 1)', 127,127,127,255, ""), + ('hsla-clamp-3', 'hsla(120, 100%, 200%, 1)', 255,255,255,255, ""), + ('hsla-clamp-4', 'hsla(120, 100%, -200%, 1)', 0,0,0,255, ""), + ('hsla-clamp-5', 'hsla(120, 100%, 50%, 2)', 0,255,0,255, ""), + ('hsla-clamp-6', 'hsla(120, 100%, 0%, -2)', 0,0,0,0, ""), + ('svg-1', 'gray', 128,128,128,255, ""), + ('svg-2', 'grey', 128,128,128,255, ""), + # css-color-4 rgb() color function + # https://drafts.csswg.org/css-color/#numeric-rgb + ('css-color-4-rgb-1', 'rgb(0, 255.0, 0)', 0,255,0,255, ""), + ('css-color-4-rgb-2', 'rgb(0, 255, 0, 0.2)', 0,255,0,51, ""), + ('css-color-4-rgb-3', 'rgb(0, 255, 0, 20%)', 0,255,0,51, ""), + ('css-color-4-rgb-4', 'rgb(0 255 0)', 0,255,0,255, ""), + ('css-color-4-rgb-5', 'rgb(0 255 0 / 0.2)', 0,255,0,51, ""), + ('css-color-4-rgb-6', 'rgb(0 255 0 / 20%)', 0,255,0,51, ""), + ('css-color-4-rgba-1', 'rgba(0, 255.0, 0)', 0,255,0,255, ""), + ('css-color-4-rgba-2', 'rgba(0, 255, 0, 0.2)', 0,255,0,51, ""), + ('css-color-4-rgba-3', 'rgba(0, 255, 0, 20%)', 0,255,0,51, ""), + ('css-color-4-rgba-4', 'rgba(0 255 0)', 0,255,0,255, ""), + ('css-color-4-rgba-5', 'rgba(0 255 0 / 0.2)', 0,255,0,51, ""), + ('css-color-4-rgba-6', 'rgba(0 255 0 / 20%)', 0,255,0,51, ""), + # css-color-4 hsl() color function + # https://drafts.csswg.org/css-color/#the-hsl-notation + ('css-color-4-hsl-1', 'hsl(120 100.0% 50.0%)', 0,255,0,255, ""), + ('css-color-4-hsl-2', 'hsl(120 100.0% 50.0% / 0.2)', 0,255,0,51, ""), + ('css-color-4-hsl-3', 'hsl(120.0, 100.0%, 50.0%, 0.2)', 0,255,0,51, ""), + ('css-color-4-hsl-4', 'hsl(120.0, 100.0%, 50.0%, 20%)', 0,255,0,51, ""), + ('css-color-4-hsl-5', 'hsl(120deg, 100.0%, 50.0%, 0.2)', 0,255,0,51, ""), + ('css-color-4-hsl-6', 'hsl(120deg, 100.0%, 50.0%)', 0,255,0,255, ""), + ('css-color-4-hsl-7', 'hsl(133.33333333grad, 100.0%, 50.0%)', 0,255,0,255, ""), + ('css-color-4-hsl-8', 'hsl(2.0943951024rad, 100.0%, 50.0%)', 0,255,0,255, ""), + ('css-color-4-hsl-9', 'hsl(0.3333333333turn, 100.0%, 50.0%)', 0,255,0,255, ""), + ('css-color-4-hsla-1', 'hsl(120 100.0% 50.0%)', 0,255,0,255, ""), + ('css-color-4-hsla-2', 'hsl(120 100.0% 50.0% / 0.2)', 0,255,0,51, ""), + ('css-color-4-hsla-3', 'hsl(120.0, 100.0%, 50.0%, 0.2)', 0,255,0,51, ""), + ('css-color-4-hsla-4', 'hsl(120.0, 100.0%, 50.0%, 20%)', 0,255,0,51, ""), + ('css-color-4-hsla-5', 'hsl(120deg, 100.0%, 50.0%, 0.2)', 0,255,0,51, ""), + ('css-color-4-hsla-6', 'hsl(120deg, 100.0%, 50.0%)', 0,255,0,255, ""), + ('css-color-4-hsla-7', 'hsl(133.33333333grad, 100.0%, 50.0%)', 0,255,0,255, ""), + ('css-color-4-hsla-8', 'hsl(2.0943951024rad, 100.0%, 50.0%)', 0,255,0,255, ""), + ('css-color-4-hsla-9', 'hsl(0.3333333333turn, 100.0%, 50.0%)', 0,255,0,255, ""), + # currentColor is handled later + ]: + # TODO: test by retrieving fillStyle, instead of actually drawing? + # TODO: test strokeStyle, shadowColor in the same way + test = { + 'name': '2d.fillStyle.parse.%s' % name, + 'testing': [ '2d.colours.parse' ], + 'notes': notes, + 'code': """ + ctx.fillStyle = '#f00'; + ctx.fillStyle = '%s'; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 == %d,%d,%d,%d; + """ % (string, r,g,b,a), + 'expected': """size 100 50 + cr.set_source_rgba(%f, %f, %f, %f) + cr.rectangle(0, 0, 100, 50) + cr.fill() + """ % (r/255., g/255., b/255., a/255.), + } + tests.append(test) + + # Also test that invalid colours are ignored + for name, string in [ + ('hex1', '#f'), + ('hex2', '#f0'), + ('hex3', '#g00'), + ('hex4', '#fg00'), + ('hex5', '#ff000'), + ('hex6', '#fg0000'), + ('hex7', '#ff0000f'), + ('hex8', '#fg0000ff'), + ('rgb-1', 'rgb(255.0, 0, 0,)'), + ('rgb-2', 'rgb(100%, 0, 0)'), + ('rgb-3', 'rgb(255, - 1, 0)'), + ('rgba-1', 'rgba(100%, 0, 0, 1)'), + ('rgba-2', 'rgba(255, 0, 0, 1. 0)'), + ('rgba-3', 'rgba(255, 0, 0, 1.)'), + ('rgba-4', 'rgba(255, 0, 0, '), + ('rgba-5', 'rgba(255, 0, 0, 1,)'), + ('hsl-1', 'hsl(0%, 100%, 50%)'), + ('hsl-2', 'hsl(z, 100%, 50%)'), + ('hsl-3', 'hsl(0, 0, 50%)'), + ('hsl-4', 'hsl(0, 100%, 0)'), + ('hsl-5', 'hsl(0, 100.%, 50%)'), + ('hsl-6', 'hsl(0, 100%, 50%,)'), + ('hsla-1', 'hsla(0%, 100%, 50%, 1)'), + ('hsla-2', 'hsla(0, 0, 50%, 1)'), + ('hsla-3', 'hsla(0, 0, 50%, 1,)'), + ('name-1', 'darkbrown'), + ('name-2', 'firebrick1'), + ('name-3', 'red blue'), + ('name-4', '"red"'), + ('name-5', '"red'), + # css-color-4 color function + # comma and comma-less expressions should not mix together. + ('css-color-4-rgb-1', 'rgb(255, 0, 0 / 1)'), + ('css-color-4-rgb-2', 'rgb(255 0 0, 1)'), + ('css-color-4-rgb-3', 'rgb(255, 0 0)'), + ('css-color-4-rgba-1', 'rgba(255, 0, 0 / 1)'), + ('css-color-4-rgba-2', 'rgba(255 0 0, 1)'), + ('css-color-4-rgba-3', 'rgba(255, 0 0)'), + ('css-color-4-hsl-1', 'hsl(0, 100%, 50% / 1)'), + ('css-color-4-hsl-2', 'hsl(0 100% 50%, 1)'), + ('css-color-4-hsl-3', 'hsl(0, 100% 50%)'), + ('css-color-4-hsla-1', 'hsla(0, 100%, 50% / 1)'), + ('css-color-4-hsla-2', 'hsla(0 100% 50%, 1)'), + ('css-color-4-hsla-3', 'hsla(0, 100% 50%)'), + # trailing slash + ('css-color-4-rgb-4', 'rgb(0 0 0 /)'), + ('css-color-4-rgb-5', 'rgb(0, 0, 0 /)'), + ('css-color-4-hsl-4', 'hsl(0 100% 50% /)'), + ('css-color-4-hsl-5', 'hsl(0, 100%, 50% /)'), + ]: + test = { + 'name': '2d.fillStyle.parse.invalid.%s' % name, + 'testing': [ '2d.colours.parse' ], + 'code': """ + ctx.fillStyle = '#0f0'; + try { ctx.fillStyle = '%s'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + """ % string, + 'expected': 'green' + } + tests.append(test) + + # Some can't have positive tests, only negative tests, because we don't know what colour they're meant to be + for name, string in [ + ('system', 'ThreeDDarkShadow'), + #('flavor', 'flavor'), # removed from latest CSS3 Color drafts + ]: + test = { + 'name': '2d.fillStyle.parse.%s' % name, + 'testing': [ '2d.colours.parse' ], + 'code': """ + ctx.fillStyle = '#f00'; + ctx.fillStyle = '%s'; + @assert ctx.fillStyle =~ /^#(?!(FF0000|ff0000|f00)$)/; // test that it's not red + """ % (string,), + } + tests.append(test) + +- name: 2d.fillStyle.parse.current.basic + desc: currentColor is computed from the canvas element + testing: + - 2d.colours.parse + - 2d.currentColor.onset + code: | + canvas.setAttribute('style', 'color: #0f0'); + ctx.fillStyle = '#f00'; + ctx.fillStyle = 'currentColor'; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.fillStyle.parse.current.changed + desc: currentColor is computed when the attribute is set, not when it is painted + testing: + - 2d.colours.parse + - 2d.currentColor.onset + code: | + canvas.setAttribute('style', 'color: #0f0'); + ctx.fillStyle = '#f00'; + ctx.fillStyle = 'currentColor'; + canvas.setAttribute('style', 'color: #f00'); + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.fillStyle.parse.current.removed + desc: currentColor is solid black when the canvas element is not in a document + testing: + - 2d.colours.parse + - 2d.currentColor.outofdoc + code: | + // Try not to let it undetectably incorrectly pick up opaque-black + // from other parts of the document: + document.body.parentNode.setAttribute('style', 'color: #f00'); + document.body.setAttribute('style', 'color: #f00'); + canvas.setAttribute('style', 'color: #f00'); + + var canvas2 = document.createElement('canvas'); + var ctx2 = canvas2.getContext('2d'); + ctx2.fillStyle = '#f00'; + ctx2.fillStyle = 'currentColor'; + ctx2.fillRect(0, 0, 100, 50); + ctx.drawImage(canvas2, 0, 0); + + document.body.parentNode.removeAttribute('style'); + document.body.removeAttribute('style'); + + @assert pixel 50,25 == 0,0,0,255; + expected: | + size 100 50 + cr.set_source_rgb(0, 0, 0) + cr.rectangle(0, 0, 100, 50) + cr.fill() + +- name: 2d.fillStyle.invalidstring + testing: + - 2d.colours.invalidstring + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.fillStyle = 'invalid'; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.fillStyle.invalidtype + testing: + - 2d.colours.invalidtype + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.fillStyle = null; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.fillStyle.get.solid + testing: + - 2d.colours.getcolour + - 2d.serializecolour.solid + code: | + ctx.fillStyle = '#fa0'; + @assert ctx.fillStyle === '#ffaa00'; + +- name: 2d.fillStyle.get.semitransparent + testing: + - 2d.colours.getcolour + - 2d.serializecolour.transparent + code: | + ctx.fillStyle = 'rgba(255,255,255,0.45)'; + @assert ctx.fillStyle =~ /^rgba\(255, 255, 255, 0\.4\d+\)$/; + +- name: 2d.fillStyle.get.transparent + testing: + - 2d.colours.getcolour + - 2d.serializecolour.transparent + code: | + ctx.fillStyle = 'rgba(0,0,0,0)'; + @assert ctx.fillStyle === 'rgba(0, 0, 0, 0)'; + +- name: 2d.fillStyle.default + testing: + - 2d.colours.default + code: | + @assert ctx.fillStyle === '#000000'; + +- name: 2d.strokeStyle.default + testing: + - 2d.colours.default + code: | + @assert ctx.strokeStyle === '#000000'; + + +- name: 2d.gradient.object.type + desc: window.CanvasGradient exists and has the right properties + testing: + - 2d.canvasGradient.type + notes: *bindings + code: | + @assert window.CanvasGradient !== undefined; + @assert window.CanvasGradient.prototype.addColorStop !== undefined; + +- name: 2d.gradient.object.return + desc: createLinearGradient() and createRadialGradient() returns objects implementing CanvasGradient + testing: + - 2d.gradient.linear.return + - 2d.gradient.radial.return + code: | + window.CanvasGradient.prototype.thisImplementsCanvasGradient = true; + + var g1 = ctx.createLinearGradient(0, 0, 100, 0); + @assert g1.addColorStop !== undefined; + @assert g1.thisImplementsCanvasGradient === true; + + var g2 = ctx.createRadialGradient(0, 0, 10, 0, 0, 20); + @assert g2.addColorStop !== undefined; + @assert g2.thisImplementsCanvasGradient === true; + +- name: 2d.gradient.interpolate.solid + testing: + - 2d.gradient.interpolate.linear + code: | + var g = ctx.createLinearGradient(0, 0, 100, 0); + g.addColorStop(0, '#0f0'); + g.addColorStop(1, '#0f0'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.gradient.interpolate.colour + testing: + - 2d.gradient.interpolate.linear + code: | + var g = ctx.createLinearGradient(0, 0, 100, 0); + g.addColorStop(0, '#ff0'); + g.addColorStop(1, '#00f'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 25,25 ==~ 191,191,63,255 +/- 3; + @assert pixel 50,25 ==~ 127,127,127,255 +/- 3; + @assert pixel 75,25 ==~ 63,63,191,255 +/- 3; + expected: | + size 100 50 + g = cairo.LinearGradient(0, 0, 100, 0) + g.add_color_stop_rgb(0, 1,1,0) + g.add_color_stop_rgb(1, 0,0,1) + cr.set_source(g) + cr.rectangle(0, 0, 100, 50) + cr.fill() + +- name: 2d.gradient.interpolate.alpha + testing: + - 2d.gradient.interpolate.linear + code: | + ctx.fillStyle = '#ff0'; + ctx.fillRect(0, 0, 100, 50); + var g = ctx.createLinearGradient(0, 0, 100, 0); + g.addColorStop(0, 'rgba(0,0,255, 0)'); + g.addColorStop(1, 'rgba(0,0,255, 1)'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 25,25 ==~ 191,191,63,255 +/- 3; + @assert pixel 50,25 ==~ 127,127,127,255 +/- 3; + @assert pixel 75,25 ==~ 63,63,191,255 +/- 3; + expected: | + size 100 50 + g = cairo.LinearGradient(0, 0, 100, 0) + g.add_color_stop_rgb(0, 1,1,0) + g.add_color_stop_rgb(1, 0,0,1) + cr.set_source(g) + cr.rectangle(0, 0, 100, 50) + cr.fill() + +- name: 2d.gradient.interpolate.colouralpha + testing: + - 2d.gradient.interpolate.alpha + code: | + var g = ctx.createLinearGradient(0, 0, 100, 0); + g.addColorStop(0, 'rgba(255,255,0, 0)'); + g.addColorStop(1, 'rgba(0,0,255, 1)'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 25,25 ==~ 190,190,65,65 +/- 3; + @assert pixel 50,25 ==~ 126,126,128,128 +/- 3; + @assert pixel 75,25 ==~ 62,62,192,192 +/- 3; + expected: | + size 100 50 + g = cairo.LinearGradient(0, 0, 100, 0) + g.add_color_stop_rgba(0, 1,1,0, 0) + g.add_color_stop_rgba(1, 0,0,1, 1) + cr.set_source(g) + cr.rectangle(0, 0, 100, 50) + cr.fill() + +- name: 2d.gradient.interpolate.outside + testing: + - 2d.gradient.outside.first + - 2d.gradient.outside.last + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createLinearGradient(25, 0, 75, 0); + g.addColorStop(0.4, '#0f0'); + g.addColorStop(0.6, '#0f0'); + + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 20,25 ==~ 0,255,0,255; + @assert pixel 50,25 ==~ 0,255,0,255; + @assert pixel 80,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.gradient.interpolate.zerosize.fill + testing: + - 2d.gradient.linear.zerosize + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction) + g.addColorStop(0, '#f00'); + g.addColorStop(1, '#f00'); + ctx.fillStyle = g; + ctx.rect(0, 0, 100, 50); + ctx.fill(); + @assert pixel 40,20 == 0,255,0,255; + expected: green + +- name: 2d.gradient.interpolate.zerosize.stroke + testing: + - 2d.gradient.linear.zerosize + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction) + g.addColorStop(0, '#f00'); + g.addColorStop(1, '#f00'); + ctx.strokeStyle = g; + ctx.rect(20, 20, 60, 10); + ctx.stroke(); + @assert pixel 19,19 == 0,255,0,255; + @assert pixel 20,19 == 0,255,0,255; + @assert pixel 21,19 == 0,255,0,255; + @assert pixel 19,20 == 0,255,0,255; + @assert pixel 20,20 == 0,255,0,255; + @assert pixel 21,20 == 0,255,0,255; + @assert pixel 19,21 == 0,255,0,255; + @assert pixel 20,21 == 0,255,0,255; + @assert pixel 21,21 == 0,255,0,255; + expected: green + +- name: 2d.gradient.interpolate.zerosize.fillRect + testing: + - 2d.gradient.linear.zerosize + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction) + g.addColorStop(0, '#f00'); + g.addColorStop(1, '#f00'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 40,20 == 0,255,0,255; @moz-todo + expected: green + +- name: 2d.gradient.interpolate.zerosize.strokeRect + testing: + - 2d.gradient.linear.zerosize + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction) + g.addColorStop(0, '#f00'); + g.addColorStop(1, '#f00'); + ctx.strokeStyle = g; + ctx.strokeRect(20, 20, 60, 10); + @assert pixel 19,19 == 0,255,0,255; + @assert pixel 20,19 == 0,255,0,255; + @assert pixel 21,19 == 0,255,0,255; + @assert pixel 19,20 == 0,255,0,255; + @assert pixel 20,20 == 0,255,0,255; + @assert pixel 21,20 == 0,255,0,255; + @assert pixel 19,21 == 0,255,0,255; + @assert pixel 20,21 == 0,255,0,255; + @assert pixel 21,21 == 0,255,0,255; + expected: green + +- name: 2d.gradient.interpolate.zerosize.fillText + testing: + - 2d.gradient.linear.zerosize + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction) + g.addColorStop(0, '#f00'); + g.addColorStop(1, '#f00'); + ctx.fillStyle = g; + ctx.font = '100px sans-serif'; + ctx.fillText("AA", 0, 50); + _assertGreen(ctx, 100, 50); + expected: green + +- name: 2d.gradient.interpolate.zerosize.strokeText + testing: + - 2d.gradient.linear.zerosize + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction) + g.addColorStop(0, '#f00'); + g.addColorStop(1, '#f00'); + ctx.strokeStyle = g; + ctx.font = '100px sans-serif'; + ctx.strokeText("AA", 0, 50); + _assertGreen(ctx, 100, 50); + expected: green + + +- name: 2d.gradient.interpolate.vertical + testing: + - 2d.gradient.interpolate.linear + code: | + var g = ctx.createLinearGradient(0, 0, 0, 50); + g.addColorStop(0, '#ff0'); + g.addColorStop(1, '#00f'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,12 ==~ 191,191,63,255 +/- 10; + @assert pixel 50,25 ==~ 127,127,127,255 +/- 5; + @assert pixel 50,37 ==~ 63,63,191,255 +/- 10; + expected: | + size 100 50 + g = cairo.LinearGradient(0, 0, 0, 50) + g.add_color_stop_rgb(0, 1,1,0) + g.add_color_stop_rgb(1, 0,0,1) + cr.set_source(g) + cr.rectangle(0, 0, 100, 50) + cr.fill() + +- name: 2d.gradient.interpolate.multiple + testing: + - 2d.gradient.interpolate.linear + code: | + canvas.width = 200; + var g = ctx.createLinearGradient(0, 0, 200, 0); + g.addColorStop(0, '#ff0'); + g.addColorStop(0.5, '#0ff'); + g.addColorStop(1, '#f0f'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 200, 50); + @assert pixel 50,25 ==~ 127,255,127,255 +/- 3; + @assert pixel 100,25 ==~ 0,255,255,255 +/- 3; + @assert pixel 150,25 ==~ 127,127,255,255 +/- 3; + expected: | + size 200 50 + g = cairo.LinearGradient(0, 0, 200, 0) + g.add_color_stop_rgb(0.0, 1,1,0) + g.add_color_stop_rgb(0.5, 0,1,1) + g.add_color_stop_rgb(1.0, 1,0,1) + cr.set_source(g) + cr.rectangle(0, 0, 200, 50) + cr.fill() + +- name: 2d.gradient.interpolate.overlap + testing: + - 2d.gradient.interpolate.overlap + code: | + canvas.width = 200; + var g = ctx.createLinearGradient(0, 0, 200, 0); + g.addColorStop(0, '#f00'); + g.addColorStop(0, '#ff0'); + g.addColorStop(0.25, '#00f'); + g.addColorStop(0.25, '#0f0'); + g.addColorStop(0.25, '#0f0'); + g.addColorStop(0.25, '#0f0'); + g.addColorStop(0.25, '#ff0'); + g.addColorStop(0.5, '#00f'); + g.addColorStop(0.5, '#0f0'); + g.addColorStop(0.75, '#00f'); + g.addColorStop(0.75, '#f00'); + g.addColorStop(0.75, '#ff0'); + g.addColorStop(0.5, '#0f0'); + g.addColorStop(0.5, '#0f0'); + g.addColorStop(0.5, '#ff0'); + g.addColorStop(1, '#00f'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 200, 50); + @assert pixel 49,25 ==~ 0,0,255,255 +/- 16; + @assert pixel 51,25 ==~ 255,255,0,255 +/- 16; + @assert pixel 99,25 ==~ 0,0,255,255 +/- 16; + @assert pixel 101,25 ==~ 255,255,0,255 +/- 16; + @assert pixel 149,25 ==~ 0,0,255,255 +/- 16; + @assert pixel 151,25 ==~ 255,255,0,255 +/- 16; + expected: | + size 200 50 + g = cairo.LinearGradient(0, 0, 50, 0) + g.add_color_stop_rgb(0, 1,1,0) + g.add_color_stop_rgb(1, 0,0,1) + cr.set_source(g) + cr.rectangle(0, 0, 50, 50) + cr.fill() + + g = cairo.LinearGradient(50, 0, 100, 0) + g.add_color_stop_rgb(0, 1,1,0) + g.add_color_stop_rgb(1, 0,0,1) + cr.set_source(g) + cr.rectangle(50, 0, 50, 50) + cr.fill() + + g = cairo.LinearGradient(100, 0, 150, 0) + g.add_color_stop_rgb(0, 1,1,0) + g.add_color_stop_rgb(1, 0,0,1) + cr.set_source(g) + cr.rectangle(100, 0, 50, 50) + cr.fill() + + g = cairo.LinearGradient(150, 0, 200, 0) + g.add_color_stop_rgb(0, 1,1,0) + g.add_color_stop_rgb(1, 0,0,1) + cr.set_source(g) + cr.rectangle(150, 0, 50, 50) + cr.fill() + +- name: 2d.gradient.interpolate.overlap2 + testing: + - 2d.gradient.interpolate.overlap + code: | + var g = ctx.createLinearGradient(0, 0, 100, 0); + var ps = [ 0, 1/10, 1/4, 1/3, 1/2, 3/4, 1 ]; + for (var p = 0; p < ps.length; ++p) + { + g.addColorStop(ps[p], '#0f0'); + for (var i = 0; i < 15; ++i) + g.addColorStop(ps[p], '#f00'); + g.addColorStop(ps[p], '#0f0'); + } + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 1,25 == 0,255,0,255; + @assert pixel 30,25 == 0,255,0,255; + @assert pixel 40,25 == 0,255,0,255; + @assert pixel 60,25 == 0,255,0,255; + @assert pixel 80,25 == 0,255,0,255; + expected: green + +- name: 2d.gradient.empty + testing: + - 2d.gradient.empty + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + var g = ctx.createLinearGradient(0, 0, 0, 50); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.gradient.object.update + testing: + - 2d.gradient.update + code: | + var g = ctx.createLinearGradient(-100, 0, 200, 0); + g.addColorStop(0, '#f00'); + g.addColorStop(1, '#f00'); + ctx.fillStyle = g; + g.addColorStop(0.1, '#0f0'); + g.addColorStop(0.9, '#0f0'); + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.gradient.object.compare + testing: + - 2d.gradient.object + code: | + var g1 = ctx.createLinearGradient(0, 0, 100, 0); + var g2 = ctx.createLinearGradient(0, 0, 100, 0); + @assert g1 !== g2; + ctx.fillStyle = g1; + @assert ctx.fillStyle === g1; + +- name: 2d.gradient.object.crosscanvas + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + var g = document.createElement('canvas').getContext('2d').createLinearGradient(0, 0, 100, 0); + g.addColorStop(0, '#0f0'); + g.addColorStop(1, '#0f0'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.gradient.object.current + testing: + - 2d.currentColor.gradient + code: | + canvas.setAttribute('style', 'color: #f00'); + + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createLinearGradient(0, 0, 100, 0); + g.addColorStop(0, 'currentColor'); + g.addColorStop(1, 'currentColor'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 ==~ 0,0,0,255; + expected: | + size 100 50 + cr.set_source_rgb(0, 0, 0) + cr.rectangle(0, 0, 100, 50) + cr.fill() + +- name: 2d.gradient.object.invalidoffset + testing: + - 2d.gradient.invalidoffset + code: | + var g = ctx.createLinearGradient(0, 0, 100, 0); + @assert throws INDEX_SIZE_ERR g.addColorStop(-1, '#000'); + @assert throws INDEX_SIZE_ERR g.addColorStop(2, '#000'); + @assert throws TypeError g.addColorStop(Infinity, '#000'); + @assert throws TypeError g.addColorStop(-Infinity, '#000'); + @assert throws TypeError g.addColorStop(NaN, '#000'); + +- name: 2d.gradient.object.invalidcolour + testing: + - 2d.gradient.invalidcolour + code: | + var g = ctx.createLinearGradient(0, 0, 100, 0); + @assert throws SYNTAX_ERR g.addColorStop(0, ""); + @assert throws SYNTAX_ERR g.addColorStop(0, 'null'); + @assert throws SYNTAX_ERR g.addColorStop(0, 'undefined'); + @assert throws SYNTAX_ERR g.addColorStop(0, null); + @assert throws SYNTAX_ERR g.addColorStop(0, undefined); + + +- name: 2d.gradient.linear.nonfinite + desc: createLinearGradient() throws TypeError if arguments are not finite + notes: *bindings + testing: + - 2d.gradient.linear.nonfinite + code: | + @nonfinite @assert throws TypeError ctx.createLinearGradient(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <1 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>); + +- name: 2d.gradient.linear.transform.1 + desc: Linear gradient coordinates are relative to the coordinate space at the time of filling + testing: + - 2d.gradient.linear.transform + code: | + var g = ctx.createLinearGradient(0, 0, 200, 0); + g.addColorStop(0, '#f00'); + g.addColorStop(0.25, '#0f0'); + g.addColorStop(0.75, '#0f0'); + g.addColorStop(1, '#f00'); + ctx.fillStyle = g; + ctx.translate(-50, 0); + ctx.fillRect(50, 0, 100, 50); + @assert pixel 25,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 75,25 == 0,255,0,255; + expected: green + +- name: 2d.gradient.linear.transform.2 + desc: Linear gradient coordinates are relative to the coordinate space at the time of filling + testing: + - 2d.gradient.linear.transform + code: | + ctx.translate(100, 0); + var g = ctx.createLinearGradient(0, 0, 200, 0); + g.addColorStop(0, '#f00'); + g.addColorStop(0.25, '#0f0'); + g.addColorStop(0.75, '#0f0'); + g.addColorStop(1, '#f00'); + ctx.fillStyle = g; + ctx.translate(-150, 0); + ctx.fillRect(50, 0, 100, 50); + @assert pixel 25,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 75,25 == 0,255,0,255; + expected: green + +- name: 2d.gradient.linear.transform.3 + desc: Linear gradient transforms do not experience broken caching effects + testing: + - 2d.gradient.linear.transform + code: | + var g = ctx.createLinearGradient(0, 0, 200, 0); + g.addColorStop(0, '#f00'); + g.addColorStop(0.25, '#0f0'); + g.addColorStop(0.75, '#0f0'); + g.addColorStop(1, '#f00'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + ctx.translate(-50, 0); + ctx.fillRect(50, 0, 100, 50); + @assert pixel 25,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 75,25 == 0,255,0,255; + expected: green + +- name: 2d.gradient.radial.negative + desc: createRadialGradient() throws INDEX_SIZE_ERR if either radius is negative + testing: + - 2d.gradient.radial.negative + code: | + @assert throws INDEX_SIZE_ERR ctx.createRadialGradient(0, 0, -0.1, 0, 0, 1); + @assert throws INDEX_SIZE_ERR ctx.createRadialGradient(0, 0, 1, 0, 0, -0.1); + @assert throws INDEX_SIZE_ERR ctx.createRadialGradient(0, 0, -0.1, 0, 0, -0.1); + +- name: 2d.gradient.radial.nonfinite + desc: createRadialGradient() throws TypeError if arguments are not finite + notes: *bindings + testing: + - 2d.gradient.radial.nonfinite + code: | + @nonfinite @assert throws TypeError ctx.createRadialGradient(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <1 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <1 Infinity -Infinity NaN>); + +- name: 2d.gradient.radial.inside1 + testing: + - 2d.gradient.radial.rendering + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createRadialGradient(50, 25, 100, 50, 25, 200); + g.addColorStop(0, '#0f0'); + g.addColorStop(1, '#f00'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 50,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,25 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 50,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.gradient.radial.inside2 + testing: + - 2d.gradient.radial.rendering + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createRadialGradient(50, 25, 200, 50, 25, 100); + g.addColorStop(0, '#f00'); + g.addColorStop(1, '#0f0'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 50,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,25 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 50,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.gradient.radial.inside3 + testing: + - 2d.gradient.radial.rendering + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createRadialGradient(50, 25, 200, 50, 25, 100); + g.addColorStop(0, '#f00'); + g.addColorStop(0.993, '#f00'); + g.addColorStop(1, '#0f0'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 50,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,25 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 50,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.gradient.radial.outside1 + testing: + - 2d.gradient.radial.rendering + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createRadialGradient(200, 25, 10, 200, 25, 20); + g.addColorStop(0, '#f00'); + g.addColorStop(1, '#0f0'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 50,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,25 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 50,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.gradient.radial.outside2 + testing: + - 2d.gradient.radial.rendering + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createRadialGradient(200, 25, 20, 200, 25, 10); + g.addColorStop(0, '#0f0'); + g.addColorStop(1, '#f00'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 50,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,25 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 50,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.gradient.radial.outside3 + testing: + - 2d.gradient.radial.rendering + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createRadialGradient(200, 25, 20, 200, 25, 10); + g.addColorStop(0, '#0f0'); + g.addColorStop(0.001, '#f00'); + g.addColorStop(1, '#f00'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 50,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,25 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 50,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.gradient.radial.touch1 + testing: + - 2d.gradient.radial.rendering + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createRadialGradient(150, 25, 50, 200, 25, 100); + g.addColorStop(0, '#f00'); + g.addColorStop(1, '#f00'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; @moz-todo + @assert pixel 50,1 == 0,255,0,255; @moz-todo + @assert pixel 98,1 == 0,255,0,255; @moz-todo + @assert pixel 1,25 == 0,255,0,255; @moz-todo + @assert pixel 50,25 == 0,255,0,255; @moz-todo + @assert pixel 98,25 == 0,255,0,255; @moz-todo + @assert pixel 1,48 == 0,255,0,255; @moz-todo + @assert pixel 50,48 == 0,255,0,255; @moz-todo + @assert pixel 98,48 == 0,255,0,255; @moz-todo + expected: green + +- name: 2d.gradient.radial.touch2 + testing: + - 2d.gradient.radial.rendering + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createRadialGradient(-80, 25, 70, 0, 25, 150); + g.addColorStop(0, '#f00'); + g.addColorStop(0.01, '#0f0'); + g.addColorStop(0.99, '#0f0'); + g.addColorStop(1, '#f00'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 50,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,25 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 50,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.gradient.radial.touch3 + testing: + - 2d.gradient.radial.rendering + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createRadialGradient(120, -15, 25, 140, -30, 50); + g.addColorStop(0, '#f00'); + g.addColorStop(1, '#f00'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; @moz-todo + @assert pixel 50,1 == 0,255,0,255; @moz-todo + @assert pixel 98,1 == 0,255,0,255; @moz-todo + @assert pixel 1,25 == 0,255,0,255; @moz-todo + @assert pixel 50,25 == 0,255,0,255; @moz-todo + @assert pixel 98,25 == 0,255,0,255; @moz-todo + @assert pixel 1,48 == 0,255,0,255; @moz-todo + @assert pixel 50,48 == 0,255,0,255; @moz-todo + @assert pixel 98,48 == 0,255,0,255; @moz-todo + expected: green + +- name: 2d.gradient.radial.equal + testing: + - 2d.gradient.radial.equal + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createRadialGradient(50, 25, 20, 50, 25, 20); + g.addColorStop(0, '#f00'); + g.addColorStop(1, '#f00'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; @moz-todo + @assert pixel 50,1 == 0,255,0,255; @moz-todo + @assert pixel 98,1 == 0,255,0,255; @moz-todo + @assert pixel 1,25 == 0,255,0,255; @moz-todo + @assert pixel 50,25 == 0,255,0,255; @moz-todo + @assert pixel 98,25 == 0,255,0,255; @moz-todo + @assert pixel 1,48 == 0,255,0,255; @moz-todo + @assert pixel 50,48 == 0,255,0,255; @moz-todo + @assert pixel 98,48 == 0,255,0,255; @moz-todo + expected: green + +- name: 2d.gradient.radial.cone.behind + testing: + - 2d.gradient.radial.rendering + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createRadialGradient(120, 25, 10, 211, 25, 100); + g.addColorStop(0, '#f00'); + g.addColorStop(1, '#f00'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; @moz-todo + @assert pixel 50,1 == 0,255,0,255; @moz-todo + @assert pixel 98,1 == 0,255,0,255; @moz-todo + @assert pixel 1,25 == 0,255,0,255; @moz-todo + @assert pixel 50,25 == 0,255,0,255; @moz-todo + @assert pixel 98,25 == 0,255,0,255; @moz-todo + @assert pixel 1,48 == 0,255,0,255; @moz-todo + @assert pixel 50,48 == 0,255,0,255; @moz-todo + @assert pixel 98,48 == 0,255,0,255; @moz-todo + expected: green + +- name: 2d.gradient.radial.cone.front + testing: + - 2d.gradient.radial.rendering + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createRadialGradient(311, 25, 10, 210, 25, 100); + g.addColorStop(0, '#f00'); + g.addColorStop(1, '#0f0'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 50,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,25 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 50,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.gradient.radial.cone.bottom + testing: + - 2d.gradient.radial.rendering + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createRadialGradient(210, 25, 100, 230, 25, 101); + g.addColorStop(0, '#0f0'); + g.addColorStop(1, '#f00'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 50,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,25 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 50,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.gradient.radial.cone.top + testing: + - 2d.gradient.radial.rendering + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createRadialGradient(230, 25, 100, 100, 25, 101); + g.addColorStop(0, '#f00'); + g.addColorStop(1, '#0f0'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 50,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,25 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 50,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.gradient.radial.cone.beside + testing: + - 2d.gradient.radial.rendering + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createRadialGradient(0, 100, 40, 100, 100, 50); + g.addColorStop(0, '#f00'); + g.addColorStop(1, '#f00'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; @moz-todo + @assert pixel 50,1 == 0,255,0,255; @moz-todo + @assert pixel 98,1 == 0,255,0,255; @moz-todo + @assert pixel 1,25 == 0,255,0,255; @moz-todo + @assert pixel 50,25 == 0,255,0,255; @moz-todo + @assert pixel 98,25 == 0,255,0,255; @moz-todo + @assert pixel 1,48 == 0,255,0,255; @moz-todo + @assert pixel 50,48 == 0,255,0,255; @moz-todo + @assert pixel 98,48 == 0,255,0,255; @moz-todo + expected: green + +- name: 2d.gradient.radial.cone.cylinder + testing: + - 2d.gradient.radial.rendering + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createRadialGradient(210, 25, 100, 230, 25, 100); + g.addColorStop(0, '#0f0'); + g.addColorStop(1, '#f00'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 50,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,25 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 50,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.gradient.radial.cone.shape1 + testing: + - 2d.gradient.radial.rendering + code: | + var tol = 1; // tolerance to avoid antialiasing artifacts + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.fillStyle = '#f00'; + ctx.beginPath(); + ctx.moveTo(30+tol, 40); + ctx.lineTo(110, -20+tol); + ctx.lineTo(110, 100-tol); + ctx.fill(); + + var g = ctx.createRadialGradient(30+10*5/2, 40, 10*3/2, 30+10*15/4, 40, 10*9/4); + g.addColorStop(0, '#0f0'); + g.addColorStop(1, '#0f0'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 50,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,25 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 50,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.gradient.radial.cone.shape2 + testing: + - 2d.gradient.radial.rendering + code: | + var tol = 1; // tolerance to avoid antialiasing artifacts + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + var g = ctx.createRadialGradient(30+10*5/2, 40, 10*3/2, 30+10*15/4, 40, 10*9/4); + g.addColorStop(0, '#f00'); + g.addColorStop(1, '#f00'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + + ctx.fillStyle = '#0f0'; + ctx.beginPath(); + ctx.moveTo(30-tol, 40); + ctx.lineTo(110, -20-tol); + ctx.lineTo(110, 100+tol); + ctx.fill(); + + @assert pixel 1,1 == 0,255,0,255; @moz-todo + @assert pixel 50,1 == 0,255,0,255; @moz-todo + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,25 == 0,255,0,255; @moz-todo + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,25 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; @moz-todo + @assert pixel 50,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.gradient.radial.transform.1 + desc: Radial gradient coordinates are relative to the coordinate space at the time of filling + testing: + - 2d.gradient.radial.transform + code: | + var g = ctx.createRadialGradient(0, 0, 0, 0, 0, 11.2); + g.addColorStop(0, '#0f0'); + g.addColorStop(0.5, '#0f0'); + g.addColorStop(0.51, '#f00'); + g.addColorStop(1, '#f00'); + ctx.fillStyle = g; + ctx.translate(50, 25); + ctx.scale(10, 10); + ctx.fillRect(-5, -2.5, 10, 5); + @assert pixel 25,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 75,25 == 0,255,0,255; + expected: green + +- name: 2d.gradient.radial.transform.2 + desc: Radial gradient coordinates are relative to the coordinate space at the time of filling + testing: + - 2d.gradient.radial.transform + code: | + ctx.translate(100, 0); + var g = ctx.createRadialGradient(0, 0, 0, 0, 0, 11.2); + g.addColorStop(0, '#0f0'); + g.addColorStop(0.5, '#0f0'); + g.addColorStop(0.51, '#f00'); + g.addColorStop(1, '#f00'); + ctx.fillStyle = g; + ctx.translate(-50, 25); + ctx.scale(10, 10); + ctx.fillRect(-5, -2.5, 10, 5); + @assert pixel 25,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 75,25 == 0,255,0,255; + expected: green + +- name: 2d.gradient.radial.transform.3 + desc: Radial gradient transforms do not experience broken caching effects + testing: + - 2d.gradient.radial.transform + code: | + var g = ctx.createRadialGradient(0, 0, 0, 0, 0, 11.2); + g.addColorStop(0, '#0f0'); + g.addColorStop(0.5, '#0f0'); + g.addColorStop(0.51, '#f00'); + g.addColorStop(1, '#f00'); + ctx.fillStyle = g; + ctx.fillRect(0, 0, 100, 50); + ctx.translate(50, 25); + ctx.scale(10, 10); + ctx.fillRect(-5, -2.5, 10, 5); + @assert pixel 25,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 75,25 == 0,255,0,255; + expected: green + + + + + + +- name: 2d.pattern.basic.type + testing: + - 2d.pattern.return + images: + - green.png + code: | + @assert window.CanvasPattern !== undefined; + + window.CanvasPattern.prototype.thisImplementsCanvasPattern = true; + + var img = document.getElementById('green.png'); + var pattern = ctx.createPattern(img, 'no-repeat'); + @assert pattern.thisImplementsCanvasPattern; + +- name: 2d.pattern.basic.image + testing: + - 2d.pattern.painting + images: + - green.png + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + var img = document.getElementById('green.png'); + var pattern = ctx.createPattern(img, 'no-repeat'); + ctx.fillStyle = pattern; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.basic.canvas + testing: + - 2d.pattern.painting + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + var canvas2 = document.createElement('canvas'); + canvas2.width = 100; + canvas2.height = 50; + var ctx2 = canvas2.getContext('2d'); + ctx2.fillStyle = '#0f0'; + ctx2.fillRect(0, 0, 100, 50); + + var pattern = ctx.createPattern(canvas2, 'no-repeat'); + ctx.fillStyle = pattern; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 50,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,25 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 50,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.basic.zerocanvas + testing: + - 2d.pattern.zerocanvas + code: | + canvas.width = 0; + canvas.height = 10; + @assert canvas.width === 0; + @assert canvas.height === 10; + @assert throws INVALID_STATE_ERR ctx.createPattern(canvas, 'repeat'); + + canvas.width = 10; + canvas.height = 0; + @assert canvas.width === 10; + @assert canvas.height === 0; + @assert throws INVALID_STATE_ERR ctx.createPattern(canvas, 'repeat'); + + canvas.width = 0; + canvas.height = 0; + @assert canvas.width === 0; + @assert canvas.height === 0; + @assert throws INVALID_STATE_ERR ctx.createPattern(canvas, 'repeat'); + +- name: 2d.pattern.basic.nocontext + testing: + - 2d.pattern.painting + code: | + var canvas2 = document.createElement('canvas'); + canvas2.width = 100; + canvas2.height = 50; + var pattern = ctx.createPattern(canvas2, 'no-repeat'); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.fillStyle = pattern; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.image.undefined + testing: + - 2d.pattern.IDL + notes: *bindings + code: | + @assert throws TypeError ctx.createPattern(undefined, 'repeat'); + +- name: 2d.pattern.image.null + testing: + - 2d.pattern.IDL + notes: *bindings + code: | + @assert throws TypeError ctx.createPattern(null, 'repeat'); + +- name: 2d.pattern.image.string + testing: + - 2d.pattern.IDL + notes: *bindings + code: | + @assert throws TypeError ctx.createPattern('../images/red.png', 'repeat'); + +- name: 2d.pattern.image.incomplete.nosrc + testing: + - 2d.pattern.incomplete.image + mozilla: { throws } + code: | + var img = new Image(); + @assert ctx.createPattern(img, 'repeat') === null; + +- name: 2d.pattern.image.incomplete.immediate + testing: + - 2d.pattern.incomplete.image + images: + - red.png + code: | + var img = new Image(); + img.src = '../images/red.png'; + // This triggers the "update the image data" algorithm. + // The image will not go to the "completely available" state + // until a fetch task in the networking task source is processed, + // so the image must not be fully decodable yet: + @assert ctx.createPattern(img, 'repeat') === null; @moz-todo + +- name: 2d.pattern.image.incomplete.reload + testing: + - 2d.pattern.incomplete.image + images: + - yellow.png + - red.png + code: | + var img = document.getElementById('yellow.png'); + img.src = '../images/red.png'; + // This triggers the "update the image data" algorithm, + // and resets the image to the "unavailable" state. + // The image will not go to the "completely available" state + // until a fetch task in the networking task source is processed, + // so the image must not be fully decodable yet: + @assert ctx.createPattern(img, 'repeat') === null; @moz-todo + +- name: 2d.pattern.image.incomplete.emptysrc + testing: + - 2d.pattern.incomplete.image + images: + - red.png + mozilla: { throws } + code: | + var img = document.getElementById('red.png'); + img.src = ""; + @assert ctx.createPattern(img, 'repeat') === null; + +- name: 2d.pattern.image.incomplete.removedsrc + testing: + - 2d.pattern.incomplete.image + images: + - red.png + mozilla: { throws } + code: | + var img = document.getElementById('red.png'); + img.removeAttribute('src'); + @assert ctx.createPattern(img, 'repeat') === null; + +- name: 2d.pattern.image.broken + testing: + - 2d.pattern.incomplete.image + images: + - broken.png + code: | + var img = document.getElementById('broken.png'); + @assert throws INVALID_STATE_ERR ctx.createPattern(img, 'repeat'); + +- name: 2d.pattern.repeat.empty + testing: + - 2d.pattern.missing + images: + - green-1x1.png + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + var img = document.getElementById('green-1x1.png'); + var pattern = ctx.createPattern(img, ""); + ctx.fillStyle = pattern; + ctx.fillRect(0, 0, 200, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.repeat.null + testing: + - 2d.pattern.unrecognised + code: | + @assert ctx.createPattern(canvas, null) != null; + +- name: 2d.pattern.repeat.undefined + testing: + - 2d.pattern.unrecognised + code: | + @assert throws SYNTAX_ERR ctx.createPattern(canvas, undefined); + +- name: 2d.pattern.repeat.unrecognised + testing: + - 2d.pattern.unrecognised + code: | + @assert throws SYNTAX_ERR ctx.createPattern(canvas, "invalid"); + +- name: 2d.pattern.repeat.unrecognisednull + testing: + - 2d.pattern.unrecognised + code: | + @assert throws SYNTAX_ERR ctx.createPattern(canvas, "null"); + +- name: 2d.pattern.repeat.case + testing: + - 2d.pattern.exact + code: | + @assert throws SYNTAX_ERR ctx.createPattern(canvas, "Repeat"); + +- name: 2d.pattern.repeat.nullsuffix + testing: + - 2d.pattern.exact + code: | + @assert throws SYNTAX_ERR ctx.createPattern(canvas, "repeat\0"); + +- name: 2d.pattern.modify.image1 + testing: + - 2d.pattern.modify + images: + - green.png + code: | + var img = document.getElementById('green.png'); + var pattern = ctx.createPattern(img, 'no-repeat'); + deferTest(); + img.onload = t.step_func_done(function () + { + ctx.fillStyle = pattern; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + }); + img.src = '/images/red.png'; + expected: green + +- name: 2d.pattern.modify.image2 + testing: + - 2d.pattern.modify + images: + - green.png + code: | + var img = document.getElementById('green.png'); + var pattern = ctx.createPattern(img, 'no-repeat'); + ctx.fillStyle = pattern; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#00f'; + ctx.fillRect(0, 0, 100, 50); + deferTest(); + img.onload = t.step_func_done(function () + { + ctx.fillStyle = pattern; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + }); + img.src = '/images/red.png'; + expected: green + +- name: 2d.pattern.modify.canvas1 + testing: + - 2d.pattern.modify + code: | + var canvas2 = document.createElement('canvas'); + canvas2.width = 100; + canvas2.height = 50; + var ctx2 = canvas2.getContext('2d'); + ctx2.fillStyle = '#0f0'; + ctx2.fillRect(0, 0, 100, 50); + + var pattern = ctx.createPattern(canvas2, 'no-repeat'); + + ctx2.fillStyle = '#f00'; + ctx2.fillRect(0, 0, 100, 50); + + ctx.fillStyle = pattern; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.modify.canvas2 + testing: + - 2d.pattern.modify + code: | + var canvas2 = document.createElement('canvas'); + canvas2.width = 100; + canvas2.height = 50; + var ctx2 = canvas2.getContext('2d'); + ctx2.fillStyle = '#0f0'; + ctx2.fillRect(0, 0, 100, 50); + + var pattern = ctx.createPattern(canvas2, 'no-repeat'); + ctx.fillStyle = pattern; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx2.fillStyle = '#f00'; + ctx2.fillRect(0, 0, 100, 50); + + ctx.fillStyle = pattern; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.crosscanvas + images: + - green.png + code: | + var img = document.getElementById('green.png'); + + var pattern = document.createElement('canvas').getContext('2d').createPattern(img, 'no-repeat'); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = pattern; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.pattern.paint.norepeat.basic + testing: + - 2d.pattern.painting + images: + - green.png + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + var img = document.getElementById('green.png'); + var pattern = ctx.createPattern(img, 'no-repeat'); + ctx.fillStyle = pattern; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.paint.norepeat.outside + testing: + - 2d.pattern.painting + images: + - red.png + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + var img = document.getElementById('red.png'); + var pattern = ctx.createPattern(img, 'no-repeat'); + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.fillStyle = pattern; + ctx.fillRect(0, -50, 100, 50); + ctx.fillRect(-100, 0, 100, 50); + ctx.fillRect(0, 50, 100, 50); + ctx.fillRect(100, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.paint.norepeat.coord1 + testing: + - 2d.pattern.painting + images: + - green.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 50, 50); + ctx.fillStyle = '#f00'; + ctx.fillRect(50, 0, 50, 50); + + var img = document.getElementById('green.png'); + var pattern = ctx.createPattern(img, 'no-repeat'); + ctx.fillStyle = pattern; + ctx.translate(50, 0); + ctx.fillRect(-50, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.paint.norepeat.coord2 + testing: + - 2d.pattern.painting + images: + - green.png + code: | + var img = document.getElementById('green.png'); + var pattern = ctx.createPattern(img, 'no-repeat'); + ctx.fillStyle = pattern; + ctx.fillRect(0, 0, 50, 50); + + ctx.fillStyle = '#f00'; + ctx.fillRect(50, 0, 50, 50); + + ctx.fillStyle = pattern; + ctx.translate(50, 0); + ctx.fillRect(-50, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.paint.norepeat.coord3 + testing: + - 2d.pattern.painting + images: + - red.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + var img = document.getElementById('red.png'); + var pattern = ctx.createPattern(img, 'no-repeat'); + ctx.fillStyle = pattern; + ctx.translate(50, 25); + ctx.fillRect(-50, -25, 100, 50); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 50, 25); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.paint.repeat.basic + testing: + - 2d.pattern.painting + images: + - green-16x16.png + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + var img = document.getElementById('green-16x16.png'); + var pattern = ctx.createPattern(img, 'repeat'); + ctx.fillStyle = pattern; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.paint.repeat.outside + testing: + - 2d.pattern.painting + images: + - green-16x16.png + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + var img = document.getElementById('green-16x16.png'); + var pattern = ctx.createPattern(img, 'repeat'); + ctx.fillStyle = pattern; + ctx.translate(50, 25); + ctx.fillRect(-50, -25, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.paint.repeat.coord1 + testing: + - 2d.pattern.painting + images: + - rgrg-256x256.png + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + var img = document.getElementById('rgrg-256x256.png'); + var pattern = ctx.createPattern(img, 'repeat'); + ctx.fillStyle = pattern; + ctx.translate(-128, -78); + ctx.fillRect(128, 78, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.paint.repeat.coord2 + testing: + - 2d.pattern.painting + images: + - ggrr-256x256.png + code: | + var img = document.getElementById('ggrr-256x256.png'); + var pattern = ctx.createPattern(img, 'repeat'); + ctx.fillStyle = pattern; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.paint.repeat.coord3 + testing: + - 2d.pattern.painting + images: + - rgrg-256x256.png + code: | + var img = document.getElementById('rgrg-256x256.png'); + var pattern = ctx.createPattern(img, 'repeat'); + ctx.fillStyle = pattern; + ctx.fillRect(0, 0, 100, 50); + + ctx.translate(-128, -78); + ctx.fillRect(128, 78, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.paint.repeatx.basic + testing: + - 2d.pattern.painting + images: + - green-16x16.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 16); + + var img = document.getElementById('green-16x16.png'); + var pattern = ctx.createPattern(img, 'repeat-x'); + ctx.fillStyle = pattern; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.paint.repeatx.outside + testing: + - 2d.pattern.painting + images: + - red-16x16.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + var img = document.getElementById('red-16x16.png'); + var pattern = ctx.createPattern(img, 'repeat-x'); + ctx.fillStyle = pattern; + ctx.fillRect(0, 0, 100, 50); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 16); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.paint.repeatx.coord1 + testing: + - 2d.pattern.painting + images: + - red-16x16.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + var img = document.getElementById('red-16x16.png'); + var pattern = ctx.createPattern(img, 'repeat-x'); + ctx.fillStyle = pattern; + ctx.translate(0, 16); + ctx.fillRect(0, -16, 100, 50); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 16); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,25 == 0,255,0,255; + @assert pixel 98,25 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.paint.repeaty.basic + testing: + - 2d.pattern.painting + images: + - green-16x16.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 16, 50); + + var img = document.getElementById('green-16x16.png'); + var pattern = ctx.createPattern(img, 'repeat-y'); + ctx.fillStyle = pattern; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.paint.repeaty.outside + testing: + - 2d.pattern.painting + images: + - red-16x16.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + var img = document.getElementById('red-16x16.png'); + var pattern = ctx.createPattern(img, 'repeat-y'); + ctx.fillStyle = pattern; + ctx.fillRect(0, 0, 100, 50); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 16, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.paint.repeaty.coord1 + testing: + - 2d.pattern.painting + images: + - red-16x16.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + var img = document.getElementById('red-16x16.png'); + var pattern = ctx.createPattern(img, 'repeat-y'); + ctx.fillStyle = pattern; + ctx.translate(48, 0); + ctx.fillRect(-48, 0, 100, 50); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 16, 50); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 50,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 50,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.paint.orientation.image + desc: Image patterns do not get flipped when painted + testing: + - 2d.pattern.painting + images: + - rrgg-256x256.png + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + var img = document.getElementById('rrgg-256x256.png'); + var pattern = ctx.createPattern(img, 'no-repeat'); + ctx.fillStyle = pattern; + ctx.save(); + ctx.translate(0, -103); + ctx.fillRect(0, 103, 100, 50); + ctx.restore(); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 25); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.pattern.paint.orientation.canvas + desc: Canvas patterns do not get flipped when painted + testing: + - 2d.pattern.painting + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + var canvas2 = document.createElement('canvas'); + canvas2.width = 100; + canvas2.height = 50; + var ctx2 = canvas2.getContext('2d'); + ctx2.fillStyle = '#f00'; + ctx2.fillRect(0, 0, 100, 25); + ctx2.fillStyle = '#0f0'; + ctx2.fillRect(0, 25, 100, 25); + + var pattern = ctx.createPattern(canvas2, 'no-repeat'); + ctx.fillStyle = pattern; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 25); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + + +- name: 2d.pattern.animated.gif + desc: createPattern() of an animated GIF draws the first frame + testing: + - 2d.pattern.animated.image + images: + - anim-gr.gif + code: | + deferTest(); + setTimeout(function () { + var pattern = ctx.createPattern(document.getElementById('anim-gr.gif'), 'repeat'); + ctx.fillStyle = pattern; + ctx.fillRect(0, 0, 50, 50); + setTimeout(t.step_func_done(function () { + ctx.fillRect(50, 0, 50, 50); + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + }), 250); + }, 250); + expected: green + + + + +- name: 2d.line.defaults + testing: + - 2d.lineWidth.default + - 2d.lineCap.default + - 2d.lineJoin.default + - 2d.miterLimit.default + code: | + @assert ctx.lineWidth === 1; + @assert ctx.lineCap === 'butt'; + @assert ctx.lineJoin === 'miter'; + @assert ctx.miterLimit === 10; + +- name: 2d.line.width.basic + desc: lineWidth determines the width of line strokes + testing: + - 2d.lineWidth + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.lineWidth = 20; + // Draw a green line over a red box, to check the line is not too small + ctx.fillStyle = '#f00'; + ctx.strokeStyle = '#0f0'; + ctx.fillRect(15, 15, 20, 20); + ctx.beginPath(); + ctx.moveTo(25, 15); + ctx.lineTo(25, 35); + ctx.stroke(); + + // Draw a green box over a red line, to check the line is not too large + ctx.fillStyle = '#0f0'; + ctx.strokeStyle = '#f00'; + ctx.beginPath(); + ctx.moveTo(75, 15); + ctx.lineTo(75, 35); + ctx.stroke(); + ctx.fillRect(65, 15, 20, 20); + + @assert pixel 14,25 == 0,255,0,255; + @assert pixel 15,25 == 0,255,0,255; + @assert pixel 16,25 == 0,255,0,255; + @assert pixel 25,25 == 0,255,0,255; + @assert pixel 34,25 == 0,255,0,255; + @assert pixel 35,25 == 0,255,0,255; + @assert pixel 36,25 == 0,255,0,255; + + @assert pixel 64,25 == 0,255,0,255; + @assert pixel 65,25 == 0,255,0,255; + @assert pixel 66,25 == 0,255,0,255; + @assert pixel 75,25 == 0,255,0,255; + @assert pixel 84,25 == 0,255,0,255; + @assert pixel 85,25 == 0,255,0,255; + @assert pixel 86,25 == 0,255,0,255; + expected: green + +- name: 2d.line.width.transformed + desc: Line stroke widths are affected by scale transformations + testing: + - 2d.lineWidth + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.lineWidth = 4; + // Draw a green line over a red box, to check the line is not too small + ctx.fillStyle = '#f00'; + ctx.strokeStyle = '#0f0'; + ctx.fillRect(15, 15, 20, 20); + ctx.save(); + ctx.scale(5, 1); + ctx.beginPath(); + ctx.moveTo(5, 15); + ctx.lineTo(5, 35); + ctx.stroke(); + ctx.restore(); + + // Draw a green box over a red line, to check the line is not too large + ctx.fillStyle = '#0f0'; + ctx.strokeStyle = '#f00'; + ctx.save(); + ctx.scale(-5, 1); + ctx.beginPath(); + ctx.moveTo(-15, 15); + ctx.lineTo(-15, 35); + ctx.stroke(); + ctx.restore(); + ctx.fillRect(65, 15, 20, 20); + + @assert pixel 14,25 == 0,255,0,255; + @assert pixel 15,25 == 0,255,0,255; + @assert pixel 16,25 == 0,255,0,255; + @assert pixel 25,25 == 0,255,0,255; + @assert pixel 34,25 == 0,255,0,255; + @assert pixel 35,25 == 0,255,0,255; + @assert pixel 36,25 == 0,255,0,255; + + @assert pixel 64,25 == 0,255,0,255; + @assert pixel 65,25 == 0,255,0,255; + @assert pixel 66,25 == 0,255,0,255; + @assert pixel 75,25 == 0,255,0,255; + @assert pixel 84,25 == 0,255,0,255; + @assert pixel 85,25 == 0,255,0,255; + @assert pixel 86,25 == 0,255,0,255; + expected: green + +- name: 2d.line.width.scaledefault + desc: Default lineWidth strokes are affected by scale transformations + testing: + - 2d.lineWidth + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.scale(50, 50); + ctx.strokeStyle = '#0f0'; + ctx.moveTo(0, 0.5); + ctx.lineTo(2, 0.5); + ctx.stroke(); + + @assert pixel 25,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 75,25 == 0,255,0,255; + @assert pixel 50,5 == 0,255,0,255; + @assert pixel 50,45 == 0,255,0,255; + expected: green + +- name: 2d.line.width.valid + desc: Setting lineWidth to valid values works + testing: + - 2d.lineWidth.set + - 2d.lineWidth.get + code: | + ctx.lineWidth = 1.5; + @assert ctx.lineWidth === 1.5; + + ctx.lineWidth = "1e1"; + @assert ctx.lineWidth === 10; + + ctx.lineWidth = 1/1024; + @assert ctx.lineWidth === 1/1024; + + ctx.lineWidth = 1000; + @assert ctx.lineWidth === 1000; + +- name: 2d.line.width.invalid + desc: Setting lineWidth to invalid values is ignored + testing: + - 2d.lineWidth.invalid + code: | + ctx.lineWidth = 1.5; + @assert ctx.lineWidth === 1.5; + + ctx.lineWidth = 1.5; + ctx.lineWidth = 0; + @assert ctx.lineWidth === 1.5; + + ctx.lineWidth = 1.5; + ctx.lineWidth = -1; + @assert ctx.lineWidth === 1.5; + + ctx.lineWidth = 1.5; + ctx.lineWidth = Infinity; + @assert ctx.lineWidth === 1.5; + + ctx.lineWidth = 1.5; + ctx.lineWidth = -Infinity; + @assert ctx.lineWidth === 1.5; + + ctx.lineWidth = 1.5; + ctx.lineWidth = NaN; + @assert ctx.lineWidth === 1.5; + +- name: 2d.line.cap.butt + desc: lineCap 'butt' is rendered correctly + testing: + - 2d.lineCap.butt + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.lineCap = 'butt'; + ctx.lineWidth = 20; + + ctx.fillStyle = '#f00'; + ctx.strokeStyle = '#0f0'; + ctx.fillRect(15, 15, 20, 20); + ctx.beginPath(); + ctx.moveTo(25, 15); + ctx.lineTo(25, 35); + ctx.stroke(); + + ctx.fillStyle = '#0f0'; + ctx.strokeStyle = '#f00'; + ctx.beginPath(); + ctx.moveTo(75, 15); + ctx.lineTo(75, 35); + ctx.stroke(); + ctx.fillRect(65, 15, 20, 20); + + @assert pixel 25,14 == 0,255,0,255; + @assert pixel 25,15 == 0,255,0,255; + @assert pixel 25,16 == 0,255,0,255; + @assert pixel 25,34 == 0,255,0,255; + @assert pixel 25,35 == 0,255,0,255; + @assert pixel 25,36 == 0,255,0,255; + + @assert pixel 75,14 == 0,255,0,255; + @assert pixel 75,15 == 0,255,0,255; + @assert pixel 75,16 == 0,255,0,255; + @assert pixel 75,34 == 0,255,0,255; + @assert pixel 75,35 == 0,255,0,255; + @assert pixel 75,36 == 0,255,0,255; + expected: green + +- name: 2d.line.cap.round + desc: lineCap 'round' is rendered correctly + testing: + - 2d.lineCap.round + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + var tol = 1; // tolerance to avoid antialiasing artifacts + + ctx.lineCap = 'round'; + ctx.lineWidth = 20; + + + ctx.fillStyle = '#f00'; + ctx.strokeStyle = '#0f0'; + + ctx.beginPath(); + ctx.moveTo(35-tol, 15); + ctx.arc(25, 15, 10-tol, 0, Math.PI, true); + ctx.arc(25, 35, 10-tol, Math.PI, 0, true); + ctx.fill(); + + ctx.beginPath(); + ctx.moveTo(25, 15); + ctx.lineTo(25, 35); + ctx.stroke(); + + + ctx.fillStyle = '#0f0'; + ctx.strokeStyle = '#f00'; + + ctx.beginPath(); + ctx.moveTo(75, 15); + ctx.lineTo(75, 35); + ctx.stroke(); + + ctx.beginPath(); + ctx.moveTo(85+tol, 15); + ctx.arc(75, 15, 10+tol, 0, Math.PI, true); + ctx.arc(75, 35, 10+tol, Math.PI, 0, true); + ctx.fill(); + + @assert pixel 17,6 == 0,255,0,255; + @assert pixel 25,6 == 0,255,0,255; + @assert pixel 32,6 == 0,255,0,255; + @assert pixel 17,43 == 0,255,0,255; + @assert pixel 25,43 == 0,255,0,255; + @assert pixel 32,43 == 0,255,0,255; + + @assert pixel 67,6 == 0,255,0,255; + @assert pixel 75,6 == 0,255,0,255; + @assert pixel 82,6 == 0,255,0,255; + @assert pixel 67,43 == 0,255,0,255; + @assert pixel 75,43 == 0,255,0,255; + @assert pixel 82,43 == 0,255,0,255; + expected: green + +- name: 2d.line.cap.square + desc: lineCap 'square' is rendered correctly + testing: + - 2d.lineCap.square + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.lineCap = 'square'; + ctx.lineWidth = 20; + + ctx.fillStyle = '#f00'; + ctx.strokeStyle = '#0f0'; + ctx.fillRect(15, 5, 20, 40); + ctx.beginPath(); + ctx.moveTo(25, 15); + ctx.lineTo(25, 35); + ctx.stroke(); + + ctx.fillStyle = '#0f0'; + ctx.strokeStyle = '#f00'; + ctx.beginPath(); + ctx.moveTo(75, 15); + ctx.lineTo(75, 35); + ctx.stroke(); + ctx.fillRect(65, 5, 20, 40); + + @assert pixel 25,4 == 0,255,0,255; + @assert pixel 25,5 == 0,255,0,255; + @assert pixel 25,6 == 0,255,0,255; + @assert pixel 25,44 == 0,255,0,255; + @assert pixel 25,45 == 0,255,0,255; + @assert pixel 25,46 == 0,255,0,255; + + @assert pixel 75,4 == 0,255,0,255; + @assert pixel 75,5 == 0,255,0,255; + @assert pixel 75,6 == 0,255,0,255; + @assert pixel 75,44 == 0,255,0,255; + @assert pixel 75,45 == 0,255,0,255; + @assert pixel 75,46 == 0,255,0,255; + expected: green + +- name: 2d.line.cap.open + desc: Line caps are drawn at the corners of an unclosed rectangle + testing: + - 2d.lineCap.end + code: | + ctx.fillStyle = '#f00'; + ctx.strokeStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.lineJoin = 'bevel'; + ctx.lineCap = 'square'; + ctx.lineWidth = 400; + + ctx.beginPath(); + ctx.moveTo(200, 200); + ctx.lineTo(200, 1000); + ctx.lineTo(1000, 1000); + ctx.lineTo(1000, 200); + ctx.lineTo(200, 200); + ctx.stroke(); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 48,1 == 0,255,0,255; + @assert pixel 48,48 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + expected: green + +- name: 2d.line.cap.closed + desc: Line caps are not drawn at the corners of an unclosed rectangle + testing: + - 2d.lineCap.end + code: | + ctx.fillStyle = '#0f0'; + ctx.strokeStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.lineJoin = 'bevel'; + ctx.lineCap = 'square'; + ctx.lineWidth = 400; + + ctx.beginPath(); + ctx.moveTo(200, 200); + ctx.lineTo(200, 1000); + ctx.lineTo(1000, 1000); + ctx.lineTo(1000, 200); + ctx.closePath(); + ctx.stroke(); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 48,1 == 0,255,0,255; + @assert pixel 48,48 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + expected: green + +- name: 2d.line.cap.valid + desc: Setting lineCap to valid values works + testing: + - 2d.lineCap.set + - 2d.lineCap.get + code: | + ctx.lineCap = 'butt' + @assert ctx.lineCap === 'butt'; + + ctx.lineCap = 'round'; + @assert ctx.lineCap === 'round'; + + ctx.lineCap = 'square'; + @assert ctx.lineCap === 'square'; + +- name: 2d.line.cap.invalid + desc: Setting lineCap to invalid values is ignored + testing: + - 2d.lineCap.invalid + code: | + ctx.lineCap = 'butt' + @assert ctx.lineCap === 'butt'; + + ctx.lineCap = 'butt'; + ctx.lineCap = 'invalid'; + @assert ctx.lineCap === 'butt'; + + ctx.lineCap = 'butt'; + ctx.lineCap = 'ROUND'; + @assert ctx.lineCap === 'butt'; + + ctx.lineCap = 'butt'; + ctx.lineCap = 'round\0'; + @assert ctx.lineCap === 'butt'; + + ctx.lineCap = 'butt'; + ctx.lineCap = 'round '; + @assert ctx.lineCap === 'butt'; + + ctx.lineCap = 'butt'; + ctx.lineCap = ""; + @assert ctx.lineCap === 'butt'; + + ctx.lineCap = 'butt'; + ctx.lineCap = 'bevel'; + @assert ctx.lineCap === 'butt'; + +- name: 2d.line.join.bevel + desc: lineJoin 'bevel' is rendered correctly + testing: + - 2d.lineJoin.common + - 2d.lineJoin.bevel + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + var tol = 1; // tolerance to avoid antialiasing artifacts + + ctx.lineJoin = 'bevel'; + ctx.lineWidth = 20; + + ctx.fillStyle = '#f00'; + ctx.strokeStyle = '#0f0'; + + ctx.fillRect(10, 10, 20, 20); + ctx.fillRect(20, 20, 20, 20); + ctx.beginPath(); + ctx.moveTo(30, 20); + ctx.lineTo(40-tol, 20); + ctx.lineTo(30, 10+tol); + ctx.fill(); + + ctx.beginPath(); + ctx.moveTo(10, 20); + ctx.lineTo(30, 20); + ctx.lineTo(30, 40); + ctx.stroke(); + + + ctx.fillStyle = '#0f0'; + ctx.strokeStyle = '#f00'; + + ctx.beginPath(); + ctx.moveTo(60, 20); + ctx.lineTo(80, 20); + ctx.lineTo(80, 40); + ctx.stroke(); + + ctx.fillRect(60, 10, 20, 20); + ctx.fillRect(70, 20, 20, 20); + ctx.beginPath(); + ctx.moveTo(80, 20); + ctx.lineTo(90+tol, 20); + ctx.lineTo(80, 10-tol); + ctx.fill(); + + @assert pixel 34,16 == 0,255,0,255; + @assert pixel 34,15 == 0,255,0,255; + @assert pixel 35,15 == 0,255,0,255; + @assert pixel 36,15 == 0,255,0,255; + @assert pixel 36,14 == 0,255,0,255; + + @assert pixel 84,16 == 0,255,0,255; + @assert pixel 84,15 == 0,255,0,255; + @assert pixel 85,15 == 0,255,0,255; + @assert pixel 86,15 == 0,255,0,255; + @assert pixel 86,14 == 0,255,0,255; + expected: green + +- name: 2d.line.join.round + desc: lineJoin 'round' is rendered correctly + testing: + - 2d.lineJoin.round + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + var tol = 1; // tolerance to avoid antialiasing artifacts + + ctx.lineJoin = 'round'; + ctx.lineWidth = 20; + + ctx.fillStyle = '#f00'; + ctx.strokeStyle = '#0f0'; + + ctx.fillRect(10, 10, 20, 20); + ctx.fillRect(20, 20, 20, 20); + ctx.beginPath(); + ctx.moveTo(30, 20); + ctx.arc(30, 20, 10-tol, 0, 2*Math.PI, true); + ctx.fill(); + + ctx.beginPath(); + ctx.moveTo(10, 20); + ctx.lineTo(30, 20); + ctx.lineTo(30, 40); + ctx.stroke(); + + + ctx.fillStyle = '#0f0'; + ctx.strokeStyle = '#f00'; + + ctx.beginPath(); + ctx.moveTo(60, 20); + ctx.lineTo(80, 20); + ctx.lineTo(80, 40); + ctx.stroke(); + + ctx.fillRect(60, 10, 20, 20); + ctx.fillRect(70, 20, 20, 20); + ctx.beginPath(); + ctx.moveTo(80, 20); + ctx.arc(80, 20, 10+tol, 0, 2*Math.PI, true); + ctx.fill(); + + @assert pixel 36,14 == 0,255,0,255; + @assert pixel 36,13 == 0,255,0,255; + @assert pixel 37,13 == 0,255,0,255; + @assert pixel 38,13 == 0,255,0,255; + @assert pixel 38,12 == 0,255,0,255; + + @assert pixel 86,14 == 0,255,0,255; + @assert pixel 86,13 == 0,255,0,255; + @assert pixel 87,13 == 0,255,0,255; + @assert pixel 88,13 == 0,255,0,255; + @assert pixel 88,12 == 0,255,0,255; + expected: green + +- name: 2d.line.join.miter + desc: lineJoin 'miter' is rendered correctly + testing: + - 2d.lineJoin.miter + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.lineJoin = 'miter'; + ctx.lineWidth = 20; + + ctx.fillStyle = '#f00'; + ctx.strokeStyle = '#0f0'; + + ctx.fillStyle = '#f00'; + ctx.strokeStyle = '#0f0'; + + ctx.fillRect(10, 10, 30, 20); + ctx.fillRect(20, 10, 20, 30); + + ctx.beginPath(); + ctx.moveTo(10, 20); + ctx.lineTo(30, 20); + ctx.lineTo(30, 40); + ctx.stroke(); + + + ctx.fillStyle = '#0f0'; + ctx.strokeStyle = '#f00'; + + ctx.beginPath(); + ctx.moveTo(60, 20); + ctx.lineTo(80, 20); + ctx.lineTo(80, 40); + ctx.stroke(); + + ctx.fillRect(60, 10, 30, 20); + ctx.fillRect(70, 10, 20, 30); + + @assert pixel 38,12 == 0,255,0,255; + @assert pixel 39,11 == 0,255,0,255; + @assert pixel 40,10 == 0,255,0,255; + @assert pixel 41,9 == 0,255,0,255; + @assert pixel 42,8 == 0,255,0,255; + + @assert pixel 88,12 == 0,255,0,255; + @assert pixel 89,11 == 0,255,0,255; + @assert pixel 90,10 == 0,255,0,255; + @assert pixel 91,9 == 0,255,0,255; + @assert pixel 92,8 == 0,255,0,255; + expected: green + +- name: 2d.line.join.open + desc: Line joins are not drawn at the corner of an unclosed rectangle + testing: + - 2d.lineJoin.joins + code: | + ctx.fillStyle = '#0f0'; + ctx.strokeStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.lineJoin = 'miter'; + ctx.lineWidth = 200; + + ctx.beginPath(); + ctx.moveTo(100, 50); + ctx.lineTo(100, 1000); + ctx.lineTo(1000, 1000); + ctx.lineTo(1000, 50); + ctx.lineTo(100, 50); + ctx.stroke(); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 48,1 == 0,255,0,255; + @assert pixel 48,48 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + expected: green + +- name: 2d.line.join.closed + desc: Line joins are drawn at the corner of a closed rectangle + testing: + - 2d.lineJoin.joinclosed + code: | + ctx.fillStyle = '#f00'; + ctx.strokeStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.lineJoin = 'miter'; + ctx.lineWidth = 200; + + ctx.beginPath(); + ctx.moveTo(100, 50); + ctx.lineTo(100, 1000); + ctx.lineTo(1000, 1000); + ctx.lineTo(1000, 50); + ctx.closePath(); + ctx.stroke(); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 48,1 == 0,255,0,255; + @assert pixel 48,48 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + expected: green + +- name: 2d.line.join.parallel + desc: Line joins are drawn at 180-degree joins + testing: + - 2d.lineJoin.joins + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 300; + ctx.lineJoin = 'round'; + ctx.beginPath(); + ctx.moveTo(-100, 25); + ctx.lineTo(0, 25); + ctx.lineTo(-100, 25); + ctx.stroke(); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 48,1 == 0,255,0,255; + @assert pixel 48,48 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + expected: green + +- name: 2d.line.join.valid + desc: Setting lineJoin to valid values works + testing: + - 2d.lineJoin.set + - 2d.lineJoin.get + code: | + ctx.lineJoin = 'bevel' + @assert ctx.lineJoin === 'bevel'; + + ctx.lineJoin = 'round'; + @assert ctx.lineJoin === 'round'; + + ctx.lineJoin = 'miter'; + @assert ctx.lineJoin === 'miter'; + +- name: 2d.line.join.invalid + desc: Setting lineJoin to invalid values is ignored + testing: + - 2d.lineJoin.invalid + code: | + ctx.lineJoin = 'bevel' + @assert ctx.lineJoin === 'bevel'; + + ctx.lineJoin = 'bevel'; + ctx.lineJoin = 'invalid'; + @assert ctx.lineJoin === 'bevel'; + + ctx.lineJoin = 'bevel'; + ctx.lineJoin = 'ROUND'; + @assert ctx.lineJoin === 'bevel'; + + ctx.lineJoin = 'bevel'; + ctx.lineJoin = 'round\0'; + @assert ctx.lineJoin === 'bevel'; + + ctx.lineJoin = 'bevel'; + ctx.lineJoin = 'round '; + @assert ctx.lineJoin === 'bevel'; + + ctx.lineJoin = 'bevel'; + ctx.lineJoin = ""; + @assert ctx.lineJoin === 'bevel'; + + ctx.lineJoin = 'bevel'; + ctx.lineJoin = 'butt'; + @assert ctx.lineJoin === 'bevel'; + +- name: 2d.line.miter.exceeded + desc: Miter joins are not drawn when the miter limit is exceeded + testing: + - 2d.lineJoin.miterLimit + - 2d.lineJoin.miter + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.lineWidth = 400; + ctx.lineJoin = 'miter'; + + ctx.strokeStyle = '#f00'; + ctx.miterLimit = 1.414; + ctx.beginPath(); + ctx.moveTo(200, 1000); + ctx.lineTo(200, 200); + ctx.lineTo(1000, 201); // slightly non-right-angle to avoid being a special case + ctx.stroke(); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 48,1 == 0,255,0,255; + @assert pixel 48,48 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + expected: green + +- name: 2d.line.miter.acute + desc: Miter joins are drawn correctly with acute angles + testing: + - 2d.lineJoin.miterLimit + - 2d.lineJoin.miter + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.lineWidth = 200; + ctx.lineJoin = 'miter'; + + ctx.strokeStyle = '#0f0'; + ctx.miterLimit = 2.614; + ctx.beginPath(); + ctx.moveTo(100, 1000); + ctx.lineTo(100, 100); + ctx.lineTo(1000, 1000); + ctx.stroke(); + + ctx.strokeStyle = '#f00'; + ctx.miterLimit = 2.613; + ctx.beginPath(); + ctx.moveTo(100, 1000); + ctx.lineTo(100, 100); + ctx.lineTo(1000, 1000); + ctx.stroke(); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 48,1 == 0,255,0,255; + @assert pixel 48,48 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + expected: green + +- name: 2d.line.miter.obtuse + desc: Miter joins are drawn correctly with obtuse angles + testing: + - 2d.lineJoin.miterLimit + - 2d.lineJoin.miter + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.lineWidth = 1600; + ctx.lineJoin = 'miter'; + + ctx.strokeStyle = '#0f0'; + ctx.miterLimit = 1.083; + ctx.beginPath(); + ctx.moveTo(800, 10000); + ctx.lineTo(800, 300); + ctx.lineTo(10000, -8900); + ctx.stroke(); + + ctx.strokeStyle = '#f00'; + ctx.miterLimit = 1.082; + ctx.beginPath(); + ctx.moveTo(800, 10000); + ctx.lineTo(800, 300); + ctx.lineTo(10000, -8900); + ctx.stroke(); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 48,1 == 0,255,0,255; + @assert pixel 48,48 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + expected: green + +- name: 2d.line.miter.rightangle + desc: Miter joins are not drawn when the miter limit is exceeded, on exact right angles + testing: + - 2d.lineJoin.miter + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.lineWidth = 400; + ctx.lineJoin = 'miter'; + + ctx.strokeStyle = '#f00'; + ctx.miterLimit = 1.414; + ctx.beginPath(); + ctx.moveTo(200, 1000); + ctx.lineTo(200, 200); + ctx.lineTo(1000, 200); + ctx.stroke(); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 48,1 == 0,255,0,255; + @assert pixel 48,48 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + expected: green + +- name: 2d.line.miter.lineedge + desc: Miter joins are not drawn when the miter limit is exceeded at the corners of a zero-height rectangle + testing: + - 2d.lineJoin.miter + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.lineWidth = 200; + ctx.lineJoin = 'miter'; + + ctx.strokeStyle = '#f00'; + ctx.miterLimit = 1.414; + ctx.beginPath(); + ctx.strokeRect(100, 25, 200, 0); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 48,1 == 0,255,0,255; + @assert pixel 48,48 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + expected: green + +- name: 2d.line.miter.within + desc: Miter joins are drawn when the miter limit is not quite exceeded + testing: + - 2d.lineJoin.miter + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.lineWidth = 400; + ctx.lineJoin = 'miter'; + + ctx.strokeStyle = '#0f0'; + ctx.miterLimit = 1.416; + ctx.beginPath(); + ctx.moveTo(200, 1000); + ctx.lineTo(200, 200); + ctx.lineTo(1000, 201); + ctx.stroke(); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 48,1 == 0,255,0,255; + @assert pixel 48,48 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + expected: green + +- name: 2d.line.miter.valid + desc: Setting miterLimit to valid values works + testing: + - 2d.miterLimit.set + - 2d.miterLimit.get + code: | + ctx.miterLimit = 1.5; + @assert ctx.miterLimit === 1.5; + + ctx.miterLimit = "1e1"; + @assert ctx.miterLimit === 10; + + ctx.miterLimit = 1/1024; + @assert ctx.miterLimit === 1/1024; + + ctx.miterLimit = 1000; + @assert ctx.miterLimit === 1000; + +- name: 2d.line.miter.invalid + desc: Setting miterLimit to invalid values is ignored + testing: + - 2d.miterLimit.invalid + code: | + ctx.miterLimit = 1.5; + @assert ctx.miterLimit === 1.5; + + ctx.miterLimit = 1.5; + ctx.miterLimit = 0; + @assert ctx.miterLimit === 1.5; + + ctx.miterLimit = 1.5; + ctx.miterLimit = -1; + @assert ctx.miterLimit === 1.5; + + ctx.miterLimit = 1.5; + ctx.miterLimit = Infinity; + @assert ctx.miterLimit === 1.5; + + ctx.miterLimit = 1.5; + ctx.miterLimit = -Infinity; + @assert ctx.miterLimit === 1.5; + + ctx.miterLimit = 1.5; + ctx.miterLimit = NaN; + @assert ctx.miterLimit === 1.5; + +- name: 2d.line.cross + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.lineWidth = 200; + ctx.lineJoin = 'bevel'; + + ctx.strokeStyle = '#f00'; + ctx.beginPath(); + ctx.moveTo(110, 50); + ctx.lineTo(110, 60); + ctx.lineTo(100, 60); + ctx.stroke(); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 48,1 == 0,255,0,255; + @assert pixel 48,48 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + expected: green + +- name: 2d.line.union + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.lineWidth = 100; + ctx.lineCap = 'round'; + + ctx.strokeStyle = '#0f0'; + ctx.beginPath(); + ctx.moveTo(0, 24); + ctx.lineTo(100, 25); + ctx.lineTo(0, 26); + ctx.closePath(); + ctx.stroke(); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 25,1 == 0,255,0,255; + @assert pixel 48,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 25,1 == 0,255,0,255; + @assert pixel 48,48 == 0,255,0,255; + expected: green + + + + + + + +- name: 2d.shadow.attributes.shadowBlur.initial + testing: + - 2d.shadow.blur.get + - 2d.shadow.blur.initial + code: | + @assert ctx.shadowBlur === 0; + +- name: 2d.shadow.attributes.shadowBlur.valid + testing: + - 2d.shadow.blur.get + - 2d.shadow.blur.set + code: | + ctx.shadowBlur = 1; + @assert ctx.shadowBlur === 1; + + ctx.shadowBlur = 0.5; + @assert ctx.shadowBlur === 0.5; + + ctx.shadowBlur = 1e6; + @assert ctx.shadowBlur === 1e6; + + ctx.shadowBlur = 0; + @assert ctx.shadowBlur === 0; + +- name: 2d.shadow.attributes.shadowBlur.invalid + testing: + - 2d.shadow.blur.invalid + code: | + ctx.shadowBlur = 1; + ctx.shadowBlur = -2; + @assert ctx.shadowBlur === 1; + + ctx.shadowBlur = 1; + ctx.shadowBlur = Infinity; + @assert ctx.shadowBlur === 1; + + ctx.shadowBlur = 1; + ctx.shadowBlur = -Infinity; + @assert ctx.shadowBlur === 1; + + ctx.shadowBlur = 1; + ctx.shadowBlur = NaN; + @assert ctx.shadowBlur === 1; + +- name: 2d.shadow.attributes.shadowOffset.initial + testing: + - 2d.shadow.offset.initial + code: | + @assert ctx.shadowOffsetX === 0; + @assert ctx.shadowOffsetY === 0; + +- name: 2d.shadow.attributes.shadowOffset.valid + testing: + - 2d.shadow.offset.get + - 2d.shadow.offset.set + code: | + ctx.shadowOffsetX = 1; + ctx.shadowOffsetY = 2; + @assert ctx.shadowOffsetX === 1; + @assert ctx.shadowOffsetY === 2; + + ctx.shadowOffsetX = 0.5; + ctx.shadowOffsetY = 0.25; + @assert ctx.shadowOffsetX === 0.5; + @assert ctx.shadowOffsetY === 0.25; + + ctx.shadowOffsetX = -0.5; + ctx.shadowOffsetY = -0.25; + @assert ctx.shadowOffsetX === -0.5; + @assert ctx.shadowOffsetY === -0.25; + + ctx.shadowOffsetX = 0; + ctx.shadowOffsetY = 0; + @assert ctx.shadowOffsetX === 0; + @assert ctx.shadowOffsetY === 0; + + ctx.shadowOffsetX = 1e6; + ctx.shadowOffsetY = 1e6; + @assert ctx.shadowOffsetX === 1e6; + @assert ctx.shadowOffsetY === 1e6; + +- name: 2d.shadow.attributes.shadowOffset.invalid + testing: + - 2d.shadow.offset.invalid + code: | + ctx.shadowOffsetX = 1; + ctx.shadowOffsetY = 2; + ctx.shadowOffsetX = Infinity; + ctx.shadowOffsetY = Infinity; + @assert ctx.shadowOffsetX === 1; + @assert ctx.shadowOffsetY === 2; + + ctx.shadowOffsetX = 1; + ctx.shadowOffsetY = 2; + ctx.shadowOffsetX = -Infinity; + ctx.shadowOffsetY = -Infinity; + @assert ctx.shadowOffsetX === 1; + @assert ctx.shadowOffsetY === 2; + + ctx.shadowOffsetX = 1; + ctx.shadowOffsetY = 2; + ctx.shadowOffsetX = NaN; + ctx.shadowOffsetY = NaN; + @assert ctx.shadowOffsetX === 1; + @assert ctx.shadowOffsetY === 2; + +- name: 2d.shadow.attributes.shadowColor.initial + testing: + - 2d.shadow.color.initial + code: | + @assert ctx.shadowColor === 'rgba(0, 0, 0, 0)'; + +- name: 2d.shadow.attributes.shadowColor.valid + testing: + - 2d.shadow.color.get + - 2d.shadow.color.set + code: | + ctx.shadowColor = 'lime'; + @assert ctx.shadowColor === '#00ff00'; + + ctx.shadowColor = 'RGBA(0,255, 0,0)'; + @assert ctx.shadowColor === 'rgba(0, 255, 0, 0)'; + +- name: 2d.shadow.attributes.shadowColor.invalid + testing: + - 2d.shadow.color.invalid + code: | + ctx.shadowColor = '#00ff00'; + ctx.shadowColor = 'bogus'; + @assert ctx.shadowColor === '#00ff00'; + + ctx.shadowColor = '#00ff00'; + ctx.shadowColor = 'red bogus'; + @assert ctx.shadowColor === '#00ff00'; + + ctx.shadowColor = '#00ff00'; + ctx.shadowColor = ctx; + @assert ctx.shadowColor === '#00ff00'; + + ctx.shadowColor = '#00ff00'; + ctx.shadowColor = undefined; + @assert ctx.shadowColor === '#00ff00'; + +- name: 2d.shadow.enable.off.1 + desc: Shadows are not drawn when only shadowColor is set + testing: + - 2d.shadow.enable + - 2d.shadow.render + code: | + ctx.shadowColor = '#f00'; + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.enable.off.2 + desc: Shadows are not drawn when only shadowColor is set + testing: + - 2d.shadow.enable + - 2d.shadow.render + code: | + ctx.globalCompositeOperation = 'destination-atop'; + ctx.shadowColor = '#f00'; + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.enable.blur + desc: Shadows are drawn if shadowBlur is set + testing: + - 2d.shadow.enable + - 2d.shadow.render + code: | + ctx.globalCompositeOperation = 'destination-atop'; + ctx.shadowColor = '#0f0'; + ctx.shadowBlur = 0.1; + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.enable.x + desc: Shadows are drawn if shadowOffsetX is set + testing: + - 2d.shadow.enable + - 2d.shadow.render + code: | + ctx.globalCompositeOperation = 'destination-atop'; + ctx.shadowColor = '#0f0'; + ctx.shadowOffsetX = 0.1; + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.enable.y + desc: Shadows are drawn if shadowOffsetY is set + testing: + - 2d.shadow.enable + - 2d.shadow.render + code: | + ctx.globalCompositeOperation = 'destination-atop'; + ctx.shadowColor = '#0f0'; + ctx.shadowOffsetY = 0.1; + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.offset.positiveX + desc: Shadows can be offset with positive x + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.shadowColor = '#0f0'; + ctx.shadowOffsetX = 50; + ctx.fillRect(0, 0, 50, 50); + @assert pixel 25,25 == 0,255,0,255; + @assert pixel 75,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.offset.negativeX + desc: Shadows can be offset with negative x + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.shadowColor = '#0f0'; + ctx.shadowOffsetX = -50; + ctx.fillRect(50, 0, 50, 50); + @assert pixel 25,25 == 0,255,0,255; + @assert pixel 75,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.offset.positiveY + desc: Shadows can be offset with positive y + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.shadowColor = '#0f0'; + ctx.shadowOffsetY = 25; + ctx.fillRect(0, 0, 100, 25); + @assert pixel 50,12 == 0,255,0,255; + @assert pixel 50,37 == 0,255,0,255; + expected: green + +- name: 2d.shadow.offset.negativeY + desc: Shadows can be offset with negative y + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.shadowColor = '#0f0'; + ctx.shadowOffsetY = -25; + ctx.fillRect(0, 25, 100, 25); + @assert pixel 50,12 == 0,255,0,255; + @assert pixel 50,37 == 0,255,0,255; + expected: green + +- name: 2d.shadow.outside + desc: Shadows of shapes outside the visible area can be offset onto the visible area + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowColor = '#0f0'; + ctx.shadowOffsetX = 100; + ctx.fillRect(-100, 0, 25, 50); + ctx.shadowOffsetX = -100; + ctx.fillRect(175, 0, 25, 50); + ctx.shadowOffsetX = 0; + ctx.shadowOffsetY = 100; + ctx.fillRect(25, -100, 50, 25); + ctx.shadowOffsetY = -100; + ctx.fillRect(25, 125, 50, 25); + @assert pixel 12,25 == 0,255,0,255; + @assert pixel 87,25 == 0,255,0,255; + @assert pixel 50,12 == 0,255,0,255; + @assert pixel 50,37 == 0,255,0,255; + expected: green + +- name: 2d.shadow.clip.1 + desc: Shadows of clipped shapes are still drawn within the clipping region + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 50, 50); + ctx.fillStyle = '#f00'; + ctx.fillRect(50, 0, 50, 50); + + ctx.save(); + ctx.beginPath(); + ctx.rect(50, 0, 50, 50); + ctx.clip(); + ctx.shadowColor = '#0f0'; + ctx.shadowOffsetX = 50; + ctx.fillRect(0, 0, 50, 50); + ctx.restore(); + + @assert pixel 25,25 == 0,255,0,255; + @assert pixel 75,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.clip.2 + desc: Shadows are not drawn outside the clipping region + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 50, 50); + ctx.fillStyle = '#0f0'; + ctx.fillRect(50, 0, 50, 50); + + ctx.save(); + ctx.beginPath(); + ctx.rect(0, 0, 50, 50); + ctx.clip(); + ctx.shadowColor = '#f00'; + ctx.shadowOffsetX = 50; + ctx.fillRect(0, 0, 50, 50); + ctx.restore(); + + @assert pixel 25,25 == 0,255,0,255; + @assert pixel 75,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.clip.3 + desc: Shadows of clipped shapes are still drawn within the clipping region + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 50, 50); + ctx.fillStyle = '#0f0'; + ctx.fillRect(50, 0, 50, 50); + + ctx.save(); + ctx.beginPath(); + ctx.rect(0, 0, 50, 50); + ctx.clip(); + ctx.fillStyle = '#f00'; + ctx.shadowColor = '#0f0'; + ctx.shadowOffsetX = 50; + ctx.fillRect(-50, 0, 50, 50); + ctx.restore(); + + @assert pixel 25,25 == 0,255,0,255; + @assert pixel 75,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.stroke.basic + desc: Shadows are drawn for strokes + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#f00'; + ctx.shadowColor = '#0f0'; + ctx.shadowOffsetY = 50; + ctx.beginPath(); + ctx.lineWidth = 50; + ctx.moveTo(0, -25); + ctx.lineTo(100, -25); + ctx.stroke(); + + @assert pixel 1,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.stroke.cap.1 + desc: Shadows are not drawn for areas outside stroke caps + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#f00'; + ctx.shadowColor = '#f00'; + ctx.shadowOffsetY = 50; + ctx.beginPath(); + ctx.lineWidth = 50; + ctx.lineCap = 'butt'; + ctx.moveTo(-50, -25); + ctx.lineTo(0, -25); + ctx.moveTo(100, -25); + ctx.lineTo(150, -25); + ctx.stroke(); + + @assert pixel 1,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.stroke.cap.2 + desc: Shadows are drawn for stroke caps + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#f00'; + ctx.shadowColor = '#0f0'; + ctx.shadowOffsetY = 50; + ctx.beginPath(); + ctx.lineWidth = 50; + ctx.lineCap = 'square'; + ctx.moveTo(25, -25); + ctx.lineTo(75, -25); + ctx.stroke(); + + @assert pixel 1,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.stroke.join.1 + desc: Shadows are not drawn for areas outside stroke joins + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#f00'; + ctx.shadowColor = '#f00'; + ctx.shadowOffsetX = 100; + ctx.lineWidth = 200; + ctx.lineJoin = 'bevel'; + ctx.beginPath(); + ctx.moveTo(-200, -50); + ctx.lineTo(-150, -50); + ctx.lineTo(-151, -100); + ctx.stroke(); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 48,48 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.shadow.stroke.join.2 + desc: Shadows are drawn for stroke joins + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 50, 50); + ctx.fillStyle = '#0f0'; + ctx.fillRect(50, 0, 50, 50); + ctx.strokeStyle = '#f00'; + ctx.shadowColor = '#0f0'; + ctx.shadowOffsetX = 100; + ctx.lineWidth = 200; + ctx.lineJoin = 'miter'; + ctx.beginPath(); + ctx.moveTo(-200, -50); + ctx.lineTo(-150, -50); + ctx.lineTo(-151, -100); + ctx.stroke(); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 48,48 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.shadow.stroke.join.3 + desc: Shadows are drawn for stroke joins respecting miter limit + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#f00'; + ctx.shadowColor = '#f00'; + ctx.shadowOffsetX = 100; + ctx.lineWidth = 200; + ctx.lineJoin = 'miter'; + ctx.miterLimit = 0.1; + ctx.beginPath(); + ctx.moveTo(-200, -50); + ctx.lineTo(-150, -50); + ctx.lineTo(-151, -100); // (not an exact right angle, to avoid some other bug in Firefox 3) + ctx.stroke(); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 48,48 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.shadow.image.basic + desc: Shadows are drawn for images + testing: + - 2d.shadow.render + images: + - red.png + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowColor = '#0f0'; + ctx.shadowOffsetY = 50; + ctx.drawImage(document.getElementById('red.png'), 0, -50); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.image.transparent.1 + desc: Shadows are not drawn for transparent images + testing: + - 2d.shadow.render + images: + - transparent.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowColor = '#f00'; + ctx.shadowOffsetY = 50; + ctx.drawImage(document.getElementById('transparent.png'), 0, -50); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.image.transparent.2 + desc: Shadows are not drawn for transparent parts of images + testing: + - 2d.shadow.render + images: + - redtransparent.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 50, 50); + ctx.fillStyle = '#f00'; + ctx.fillRect(50, 0, 50, 50); + ctx.shadowOffsetY = 50; + ctx.shadowColor = '#0f0'; + ctx.drawImage(document.getElementById('redtransparent.png'), 50, -50); + ctx.shadowColor = '#f00'; + ctx.drawImage(document.getElementById('redtransparent.png'), -50, -50); + + @assert pixel 25,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 75,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.image.alpha + desc: Shadows are drawn correctly for partially-transparent images + testing: + - 2d.shadow.render + images: + - transparent50.png + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowOffsetY = 50; + ctx.shadowColor = '#00f'; + ctx.drawImage(document.getElementById('transparent50.png'), 0, -50); + + @assert pixel 50,25 ==~ 127,0,127,255; + expected: | + size 100 50 + cr.set_source_rgb(0.5, 0, 0.5) + cr.rectangle(0, 0, 100, 50) + cr.fill() + +- name: 2d.shadow.image.section + desc: Shadows are not drawn for areas outside image source rectangles + testing: + - 2d.shadow.render + images: + - redtransparent.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowOffsetY = 50; + ctx.shadowColor = '#f00'; + ctx.drawImage(document.getElementById('redtransparent.png'), 50, 0, 50, 50, 0, -50, 50, 50); + + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 50,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.shadow.image.scale + desc: Shadows are drawn correctly for scaled images + testing: + - 2d.shadow.render + images: + - redtransparent.png + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowOffsetY = 50; + ctx.shadowColor = '#0f0'; + ctx.drawImage(document.getElementById('redtransparent.png'), 0, 0, 100, 50, -10, -50, 240, 50); + + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 50,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.shadow.canvas.basic + desc: Shadows are drawn for canvases + testing: + - 2d.shadow.render + code: | + var canvas2 = document.createElement('canvas'); + canvas2.width = 100; + canvas2.height = 50; + var ctx2 = canvas2.getContext('2d'); + ctx2.fillStyle = '#f00'; + ctx2.fillRect(0, 0, 100, 50); + + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowColor = '#0f0'; + ctx.shadowOffsetY = 50; + ctx.drawImage(canvas2, 0, -50); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.canvas.transparent.1 + desc: Shadows are not drawn for transparent canvases + testing: + - 2d.shadow.render + code: | + var canvas2 = document.createElement('canvas'); + canvas2.width = 100; + canvas2.height = 50; + var ctx2 = canvas2.getContext('2d'); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowColor = '#f00'; + ctx.shadowOffsetY = 50; + ctx.drawImage(canvas2, 0, -50); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.canvas.transparent.2 + desc: Shadows are not drawn for transparent parts of canvases + testing: + - 2d.shadow.render + code: | + var canvas2 = document.createElement('canvas'); + canvas2.width = 100; + canvas2.height = 50; + var ctx2 = canvas2.getContext('2d'); + ctx2.fillStyle = '#f00'; + ctx2.fillRect(0, 0, 50, 50); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 50, 50); + ctx.fillStyle = '#f00'; + ctx.fillRect(50, 0, 50, 50); + ctx.shadowOffsetY = 50; + ctx.shadowColor = '#0f0'; + ctx.drawImage(canvas2, 50, -50); + ctx.shadowColor = '#f00'; + ctx.drawImage(canvas2, -50, -50); + + @assert pixel 25,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 75,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.canvas.alpha + desc: Shadows are drawn correctly for partially-transparent canvases + testing: + - 2d.shadow.render + images: + - transparent50.png + code: | + var canvas2 = document.createElement('canvas'); + canvas2.width = 100; + canvas2.height = 50; + var ctx2 = canvas2.getContext('2d'); + ctx2.fillStyle = 'rgba(255, 0, 0, 0.5)'; + ctx2.fillRect(0, 0, 100, 50); + + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowOffsetY = 50; + ctx.shadowColor = '#00f'; + ctx.drawImage(canvas2, 0, -50); + + @assert pixel 50,25 ==~ 127,0,127,255; + expected: | + size 100 50 + cr.set_source_rgb(0.5, 0, 0.5) + cr.rectangle(0, 0, 100, 50) + cr.fill() + +- name: 2d.shadow.pattern.basic + desc: Shadows are drawn for fill patterns + testing: + - 2d.shadow.render + # http://bugs.webkit.org/show_bug.cgi?id=15266 + images: + - red.png + code: | + var pattern = ctx.createPattern(document.getElementById('red.png'), 'repeat'); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowColor = '#0f0'; + ctx.shadowOffsetY = 50; + ctx.fillStyle = pattern; + ctx.fillRect(0, -50, 100, 50); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.pattern.transparent.1 + desc: Shadows are not drawn for transparent fill patterns + testing: + - 2d.shadow.render + # http://bugs.webkit.org/show_bug.cgi?id=15266 + images: + - transparent.png + code: | + var pattern = ctx.createPattern(document.getElementById('transparent.png'), 'repeat'); + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowColor = '#f00'; + ctx.shadowOffsetY = 50; + ctx.fillStyle = pattern; + ctx.fillRect(0, -50, 100, 50); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.pattern.transparent.2 + desc: Shadows are not drawn for transparent parts of fill patterns + testing: + - 2d.shadow.render + # http://bugs.webkit.org/show_bug.cgi?id=15266 + images: + - redtransparent.png + code: | + var pattern = ctx.createPattern(document.getElementById('redtransparent.png'), 'repeat'); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 50, 50); + ctx.fillStyle = '#0f0'; + ctx.fillRect(50, 0, 50, 50); + ctx.shadowOffsetY = 50; + ctx.shadowColor = '#0f0'; + ctx.fillStyle = pattern; + ctx.fillRect(0, -50, 100, 50); + + @assert pixel 25,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 75,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.pattern.alpha + desc: Shadows are drawn correctly for partially-transparent fill patterns + testing: + - 2d.shadow.render + # http://bugs.webkit.org/show_bug.cgi?id=15266 + images: + - transparent50.png + code: | + var pattern = ctx.createPattern(document.getElementById('transparent50.png'), 'repeat'); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowOffsetY = 50; + ctx.shadowColor = '#00f'; + ctx.fillStyle = pattern; + ctx.fillRect(0, -50, 100, 50); + + @assert pixel 50,25 ==~ 127,0,127,255; + expected: | + size 100 50 + cr.set_source_rgb(0.5, 0, 0.5) + cr.rectangle(0, 0, 100, 50) + cr.fill() + +- name: 2d.shadow.gradient.basic + desc: Shadows are drawn for gradient fills + testing: + - 2d.shadow.render + # http://bugs.webkit.org/show_bug.cgi?id=15266 + code: | + var gradient = ctx.createLinearGradient(0, 0, 100, 0); + gradient.addColorStop(0, '#f00'); + gradient.addColorStop(1, '#f00'); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowColor = '#0f0'; + ctx.shadowOffsetY = 50; + ctx.fillStyle = gradient; + ctx.fillRect(0, -50, 100, 50); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.gradient.transparent.1 + desc: Shadows are not drawn for transparent gradient fills + testing: + - 2d.shadow.render + # http://bugs.webkit.org/show_bug.cgi?id=15266 + code: | + var gradient = ctx.createLinearGradient(0, 0, 100, 0); + gradient.addColorStop(0, 'rgba(0,0,0,0)'); + gradient.addColorStop(1, 'rgba(0,0,0,0)'); + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowColor = '#f00'; + ctx.shadowOffsetY = 50; + ctx.fillStyle = gradient; + ctx.fillRect(0, -50, 100, 50); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.gradient.transparent.2 + desc: Shadows are not drawn for transparent parts of gradient fills + testing: + - 2d.shadow.render + # http://bugs.webkit.org/show_bug.cgi?id=15266 + code: | + var gradient = ctx.createLinearGradient(0, 0, 100, 0); + gradient.addColorStop(0, '#f00'); + gradient.addColorStop(0.499, '#f00'); + gradient.addColorStop(0.5, 'rgba(0,0,0,0)'); + gradient.addColorStop(1, 'rgba(0,0,0,0)'); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 50, 50); + ctx.fillStyle = '#0f0'; + ctx.fillRect(50, 0, 50, 50); + ctx.shadowOffsetY = 50; + ctx.shadowColor = '#0f0'; + ctx.fillStyle = gradient; + ctx.fillRect(0, -50, 100, 50); + + @assert pixel 25,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 75,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.gradient.alpha + desc: Shadows are drawn correctly for partially-transparent gradient fills + testing: + - 2d.shadow.render + # http://bugs.webkit.org/show_bug.cgi?id=15266 + code: | + var gradient = ctx.createLinearGradient(0, 0, 100, 0); + gradient.addColorStop(0, 'rgba(255,0,0,0.5)'); + gradient.addColorStop(1, 'rgba(255,0,0,0.5)'); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowOffsetY = 50; + ctx.shadowColor = '#00f'; + ctx.fillStyle = gradient; + ctx.fillRect(0, -50, 100, 50); + + @assert pixel 50,25 ==~ 127,0,127,255; + expected: | + size 100 50 + cr.set_source_rgb(0.5, 0, 0.5) + cr.rectangle(0, 0, 100, 50) + cr.fill() + +- name: 2d.shadow.transform.1 + desc: Shadows take account of transformations + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowOffsetY = 50; + ctx.shadowColor = '#0f0'; + ctx.translate(100, 100); + ctx.fillRect(-100, -150, 100, 50); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.transform.2 + desc: Shadow offsets are not affected by transformations + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowOffsetY = 50; + ctx.shadowColor = '#0f0'; + ctx.rotate(Math.PI) + ctx.fillRect(-100, 0, 100, 50); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.shadow.blur.low + desc: Shadows look correct for small blurs + manual: + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#ff0'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowColor = '#00f'; + ctx.shadowOffsetY = 25; + for (var x = 0; x < 100; ++x) { + ctx.save(); + ctx.beginPath(); + ctx.rect(x, 0, 1, 50); + ctx.clip(); + ctx.shadowBlur = x; + ctx.fillRect(-200, -200, 500, 200); + ctx.restore(); + } + expected: | + size 100 50 + import math + cr.set_source_rgb(0, 0, 1) + cr.rectangle(0, 0, 1, 25) + cr.fill() + cr.set_source_rgb(1, 1, 0) + cr.rectangle(0, 25, 1, 25) + cr.fill() + for x in range(1, 100): + sigma = x/2.0 + filter = [math.exp(-i*i / (2*sigma*sigma)) / (math.sqrt(2*math.pi)*sigma) for i in range(-24, 26)] + accum = [0] + for f in filter: + accum.append(accum[-1] + f) + for y in range(0, 50): + cr.set_source_rgb(accum[y], accum[y], 1-accum[y]) + cr.rectangle(x, y, 1, 1) + cr.fill() + +- name: 2d.shadow.blur.high + desc: Shadows look correct for large blurs + manual: + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#ff0'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowColor = '#00f'; + ctx.shadowOffsetY = 0; + ctx.shadowBlur = 100; + ctx.fillRect(-200, -200, 200, 400); + expected: | + size 100 50 + import math + sigma = 100.0/2 + filter = [math.exp(-i*i / (2*sigma*sigma)) / (math.sqrt(2*math.pi)*sigma) for i in range(-200, 100)] + accum = [0] + for f in filter: + accum.append(accum[-1] + f) + for x in range(0, 100): + cr.set_source_rgb(accum[x+200], accum[x+200], 1-accum[x+200]) + cr.rectangle(x, 0, 1, 50) + cr.fill() + +- name: 2d.shadow.alpha.1 + desc: Shadow colour alpha components are used + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowColor = 'rgba(255, 0, 0, 0.01)'; + ctx.shadowOffsetY = 50; + ctx.fillRect(0, -50, 100, 50); + + @assert pixel 50,25 ==~ 0,255,0,255 +/- 4; + expected: green + +- name: 2d.shadow.alpha.2 + desc: Shadow colour alpha components are used + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowColor = 'rgba(0, 0, 255, 0.5)'; + ctx.shadowOffsetY = 50; + ctx.fillRect(0, -50, 100, 50); + + @assert pixel 50,25 ==~ 127,0,127,255; + expected: | + size 100 50 + cr.set_source_rgb(0.5, 0, 0.5) + cr.rectangle(0, 0, 100, 50) + cr.fill() + +- name: 2d.shadow.alpha.3 + desc: Shadows are affected by globalAlpha + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#f00'; // (work around broken Firefox globalAlpha caching) + ctx.shadowColor = '#00f'; + ctx.shadowOffsetY = 50; + ctx.globalAlpha = 0.5; + ctx.fillRect(0, -50, 100, 50); + + @assert pixel 50,25 ==~ 127,0,127,255; + expected: | + size 100 50 + cr.set_source_rgb(0.5, 0, 0.5) + cr.rectangle(0, 0, 100, 50) + cr.fill() + +- name: 2d.shadow.alpha.4 + desc: Shadows with alpha components are correctly affected by globalAlpha + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#f00'; // (work around broken Firefox globalAlpha caching) + ctx.shadowColor = 'rgba(0, 0, 255, 0.707)'; + ctx.shadowOffsetY = 50; + ctx.globalAlpha = 0.707; + ctx.fillRect(0, -50, 100, 50); + + @assert pixel 50,25 ==~ 127,0,127,255; + expected: | + size 100 50 + cr.set_source_rgb(0.5, 0, 0.5) + cr.rectangle(0, 0, 100, 50) + cr.fill() + +- name: 2d.shadow.alpha.5 + desc: Shadows of shapes with alpha components are drawn correctly + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = 'rgba(64, 0, 0, 0.5)'; + ctx.shadowColor = '#00f'; + ctx.shadowOffsetY = 50; + ctx.fillRect(0, -50, 100, 50); + + @assert pixel 50,25 ==~ 127,0,127,255; + expected: | + size 100 50 + cr.set_source_rgb(0.5, 0, 0.5) + cr.rectangle(0, 0, 100, 50) + cr.fill() + +- name: 2d.shadow.composite.1 + desc: Shadows are drawn using globalCompositeOperation + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.globalCompositeOperation = 'xor'; + ctx.shadowColor = '#f00'; + ctx.shadowOffsetX = 100; + ctx.fillStyle = '#0f0'; + ctx.fillRect(-100, 0, 200, 50); + + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.shadow.composite.2 + desc: Shadows are drawn using globalCompositeOperation + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.globalCompositeOperation = 'xor'; + ctx.shadowColor = '#f00'; + ctx.shadowBlur = 1; + ctx.fillStyle = '#0f0'; + ctx.fillRect(-10, -10, 120, 70); + + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.shadow.composite.3 + desc: Areas outside shadows are drawn correctly with destination-out + testing: + - 2d.shadow.render + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.globalCompositeOperation = 'destination-out'; + ctx.shadowColor = '#f00'; + ctx.shadowBlur = 10; + ctx.fillStyle = '#f00'; + ctx.fillRect(200, 0, 100, 50); + + @assert pixel 5,5 ==~ 0,255,0,255; + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + + + + + + +- name: 2d.clearRect.basic + desc: clearRect clears to transparent black + testing: + - 2d.clearRect + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.clearRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,0,0,0; + expected: clear + +- name: 2d.clearRect.path + desc: clearRect does not affect the current path + testing: + - 2d.clearRect + code: | + ctx.fillStyle = '#0f0'; + ctx.beginPath(); + ctx.rect(0, 0, 100, 50); + ctx.clearRect(0, 0, 16, 16); + ctx.fill(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.clearRect.zero + desc: clearRect of zero pixels has no effect + testing: + - 2d.clearRect + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.clearRect(0, 0, 100, 0); + ctx.clearRect(0, 0, 0, 50); + ctx.clearRect(0, 0, 0, 0); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.clearRect.negative + desc: clearRect of negative sizes works + testing: + - 2d.clearRect + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.clearRect(0, 0, 50, 25); + ctx.clearRect(100, 0, -50, 25); + ctx.clearRect(0, 50, 50, -25); + ctx.clearRect(100, 50, -50, -25); + @assert pixel 25,12 == 0,0,0,0; + @assert pixel 75,12 == 0,0,0,0; + @assert pixel 25,37 == 0,0,0,0; + @assert pixel 75,37 == 0,0,0,0; + expected: clear + +- name: 2d.clearRect.transform + desc: clearRect is affected by transforms + testing: + - 2d.clearRect + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.scale(10, 10); + ctx.translate(0, 5); + ctx.clearRect(0, -5, 10, 5); + @assert pixel 50,25 == 0,0,0,0; + expected: clear + +- name: 2d.clearRect.globalalpha + desc: clearRect is not affected by globalAlpha + testing: + - 2d.clearRect + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.globalAlpha = 0.1; + ctx.clearRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,0,0,0; + expected: clear + +- name: 2d.clearRect.globalcomposite + desc: clearRect is not affected by globalCompositeOperation + testing: + - 2d.clearRect + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.globalCompositeOperation = 'destination-atop'; + ctx.clearRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,0,0,0; + expected: clear + +- name: 2d.clearRect.clip + desc: clearRect is affected by clipping regions + testing: + - 2d.clearRect + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.beginPath(); + ctx.rect(0, 0, 16, 16); + ctx.clip(); + + ctx.clearRect(0, 0, 100, 50); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 16, 16); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.clearRect.shadow + desc: clearRect does not draw shadows + testing: + - 2d.clearRect + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowColor = '#f00'; + ctx.shadowBlur = 0; + ctx.shadowOffsetX = 0; + ctx.shadowOffsetY = 50; + ctx.clearRect(0, -50, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.clearRect.nonfinite + desc: clearRect() with Infinity/NaN is ignored + testing: + - 2d.nonfinite + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + @nonfinite ctx.clearRect(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <100 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + + +- name: 2d.fillRect.basic + desc: fillRect works + testing: + - 2d.fillRect + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.fillRect.path + desc: fillRect does not affect the current path + testing: + - 2d.fillRect + code: | + ctx.beginPath(); + ctx.rect(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 16, 16); + ctx.fillStyle = '#0f0'; + ctx.fill(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.fillRect.zero + desc: fillRect of zero pixels has no effect + testing: + - 2d.fillRect + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 0); + ctx.fillRect(0, 0, 0, 50); + ctx.fillRect(0, 0, 0, 0); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.fillRect.negative + desc: fillRect of negative sizes works + testing: + - 2d.fillRect + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 50, 25); + ctx.fillRect(100, 0, -50, 25); + ctx.fillRect(0, 50, 50, -25); + ctx.fillRect(100, 50, -50, -25); + @assert pixel 25,12 == 0,255,0,255; + @assert pixel 75,12 == 0,255,0,255; + @assert pixel 25,37 == 0,255,0,255; + @assert pixel 75,37 == 0,255,0,255; + expected: green + +- name: 2d.fillRect.transform + desc: fillRect is affected by transforms + testing: + - 2d.fillRect + code: | + ctx.scale(10, 10); + ctx.translate(0, 5); + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, -5, 10, 5); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +# don't bother testing globalalpha, globalcomposite because they're already heavily used by other test cases + +- name: 2d.fillRect.clip + desc: fillRect is affected by clipping regions + testing: + - 2d.fillRect + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.beginPath(); + ctx.rect(0, 0, 16, 16); + ctx.clip(); + + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 16, 16); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.fillRect.shadow + desc: fillRect draws shadows + testing: + - 2d.fillRect + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.shadowColor = '#0f0'; + ctx.shadowBlur = 0; + ctx.shadowOffsetX = 0; + ctx.shadowOffsetY = 50; + ctx.fillRect(0, -50, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.fillRect.nonfinite + desc: fillRect() with Infinity/NaN is ignored + testing: + - 2d.nonfinite + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.fillStyle = '#f00'; + @nonfinite ctx.fillRect(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <100 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + + +- name: 2d.strokeRect.basic + desc: strokeRect works + testing: + - 2d.strokeRect + code: | + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 50; + ctx.strokeRect(25, 24, 50, 2); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.strokeRect.path + desc: strokeRect does not affect the current path + testing: + - 2d.strokeRect + code: | + ctx.beginPath(); + ctx.rect(0, 0, 100, 50); + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 5; + ctx.strokeRect(0, 0, 16, 16); + ctx.fillStyle = '#0f0'; + ctx.fill(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.strokeRect.zero.1 + desc: strokeRect of 0x0 pixels draws nothing + testing: + - 2d.strokeRect + code: | + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 250; + ctx.strokeRect(50, 25, 0, 0); + @assert pixel 50,25 == 0,0,0,0; + expected: clear + +- name: 2d.strokeRect.zero.2 + desc: strokeRect of 0x0 pixels draws nothing, including caps and joins + testing: + - 2d.strokeRect + code: | + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 250; + ctx.lineCap = 'round'; + ctx.lineJoin = 'round'; + ctx.strokeRect(50, 25, 0, 0); + @assert pixel 50,25 == 0,0,0,0; + expected: clear + +- name: 2d.strokeRect.zero.3 + desc: strokeRect of Nx0 pixels draws a straight line + testing: + - 2d.strokeRect + code: | + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 50; + ctx.strokeRect(0, 25, 100, 0); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.strokeRect.zero.4 + desc: strokeRect of Nx0 pixels draws a closed line with no caps + testing: + - 2d.strokeRect + code: | + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 250; + ctx.lineCap = 'round'; + ctx.strokeRect(100, 25, 100, 0); + @assert pixel 50,25 == 0,0,0,0; + expected: clear + +- name: 2d.strokeRect.zero.5 + desc: strokeRect of Nx0 pixels draws a closed line with joins + testing: + - 2d.strokeRect + code: | + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 250; + ctx.lineJoin = 'round'; + ctx.strokeRect(100, 25, 100, 0); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.strokeRect.negative + desc: strokeRect of negative sizes works + testing: + - 2d.strokeRect + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 25; + ctx.strokeRect(12, 12, 26, 1); + ctx.strokeRect(88, 12, -26, 1); + ctx.strokeRect(12, 38, 26, -1); + ctx.strokeRect(88, 38, -26, -1); + @assert pixel 25,12 == 0,255,0,255; + @assert pixel 75,12 == 0,255,0,255; + @assert pixel 25,37 == 0,255,0,255; + @assert pixel 75,37 == 0,255,0,255; + expected: green + +- name: 2d.strokeRect.transform + desc: fillRect is affected by transforms + testing: + - 2d.strokeRect + code: | + ctx.scale(10, 10); + ctx.translate(0, 5); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 5; + ctx.strokeRect(2.5, -2.6, 5, 0.2); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.strokeRect.globalalpha + desc: strokeRect is affected by globalAlpha + testing: + - 2d.strokeRect + code: | + ctx.globalAlpha = 0; + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 50; + ctx.strokeRect(25, 24, 50, 2); + @assert pixel 50,25 == 0,0,0,0; + expected: clear + +- name: 2d.strokeRect.globalcomposite + desc: strokeRect is not affected by globalCompositeOperation + testing: + - 2d.strokeRect + code: | + ctx.globalCompositeOperation = 'source-in'; + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 50; + ctx.strokeRect(25, 24, 50, 2); + @assert pixel 50,25 == 0,0,0,0; + expected: clear + +- name: 2d.strokeRect.clip + desc: strokeRect is affected by clipping regions + testing: + - 2d.strokeRect + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.beginPath(); + ctx.rect(0, 0, 16, 16); + ctx.clip(); + + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 50; + ctx.strokeRect(0, 0, 100, 50); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 16, 16); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.strokeRect.shadow + desc: strokeRect draws shadows + testing: + - 2d.strokeRect + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.shadowColor = '#0f0'; + ctx.shadowBlur = 0; + ctx.shadowOffsetX = 0; + ctx.shadowOffsetY = 50; + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 50; + ctx.strokeRect(0, -75, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.strokeRect.nonfinite + desc: strokeRect() with Infinity/NaN is ignored + testing: + - 2d.nonfinite + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 150; + @nonfinite ctx.strokeRect(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <100 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + + +- name: 2d.path.initial + testing: + - 2d.path.initial + #mozilla: { bug: TODO } + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.closePath(); + ctx.fillStyle = '#f00'; + ctx.fill(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.beginPath + testing: + - 2d.path.beginPath + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.rect(0, 0, 100, 50); + ctx.beginPath(); + ctx.fillStyle = '#f00'; + ctx.fill(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.moveTo.basic + testing: + - 2d.path.moveTo + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.rect(0, 0, 10, 50); + ctx.moveTo(100, 0); + ctx.lineTo(10, 0); + ctx.lineTo(10, 50); + ctx.lineTo(100, 50); + ctx.fillStyle = '#0f0'; + ctx.fill(); + @assert pixel 90,25 == 0,255,0,255; + expected: green + +- name: 2d.path.moveTo.newsubpath + testing: + - 2d.path.moveTo + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.beginPath(); + ctx.moveTo(0, 0); + ctx.moveTo(100, 0); + ctx.moveTo(100, 50); + ctx.moveTo(0, 50); + ctx.fillStyle = '#f00'; + ctx.fill(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.moveTo.multiple + testing: + - 2d.path.moveTo + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.moveTo(0, 25); + ctx.moveTo(100, 25); + ctx.moveTo(0, 25); + ctx.lineTo(100, 25); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 50; + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.moveTo.nonfinite + desc: moveTo() with Infinity/NaN is ignored + testing: + - 2d.nonfinite + code: | + ctx.moveTo(0, 0); + ctx.lineTo(100, 0); + @nonfinite ctx.moveTo(<0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>); + ctx.lineTo(100, 50); + ctx.lineTo(0, 50); + ctx.fillStyle = '#0f0'; + ctx.fill(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.closePath.empty + testing: + - 2d.path.closePath.empty + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.closePath(); + ctx.fillStyle = '#f00'; + ctx.fill(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.closePath.newline + testing: + - 2d.path.closePath.nonempty + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 50; + ctx.moveTo(-100, 25); + ctx.lineTo(-100, -100); + ctx.lineTo(200, -100); + ctx.lineTo(200, 25); + ctx.closePath(); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.closePath.nextpoint + testing: + - 2d.path.closePath.nonempty + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 50; + ctx.moveTo(-100, 25); + ctx.lineTo(-100, -1000); + ctx.closePath(); + ctx.lineTo(1000, 25); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.lineTo.ensuresubpath.1 + desc: If there is no subpath, the point is added and nothing is drawn + testing: + - 2d.path.lineTo.empty + - 2d.path.ensure + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 50; + ctx.beginPath(); + ctx.lineTo(100, 50); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.lineTo.ensuresubpath.2 + desc: If there is no subpath, the point is added and used for subsequent drawing + testing: + - 2d.path.lineTo.empty + - 2d.path.ensure + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 50; + ctx.beginPath(); + ctx.lineTo(0, 25); + ctx.lineTo(100, 25); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.lineTo.basic + testing: + - 2d.path.lineTo.nonempty + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 50; + ctx.beginPath(); + ctx.moveTo(0, 25); + ctx.lineTo(100, 25); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.lineTo.nextpoint + testing: + - 2d.path.lineTo.nonempty + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 50; + ctx.beginPath(); + ctx.moveTo(-100, -100); + ctx.lineTo(0, 25); + ctx.lineTo(100, 25); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.lineTo.nonfinite + desc: lineTo() with Infinity/NaN is ignored + testing: + - 2d.nonfinite + code: | + ctx.moveTo(0, 0); + ctx.lineTo(100, 0); + @nonfinite ctx.lineTo(<0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>); + ctx.lineTo(100, 50); + ctx.lineTo(0, 50); + ctx.fillStyle = '#0f0'; + ctx.fill(); + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 90,45 == 0,255,0,255; + expected: green + +- name: 2d.path.lineTo.nonfinite.details + desc: lineTo() with Infinity/NaN for first arg still converts the second arg + testing: + - 2d.nonfinite + code: | + for (var arg1 of [Infinity, -Infinity, NaN]) { + var converted = false; + ctx.lineTo(arg1, { valueOf: function() { converted = true; return 0; } }); + @assert converted; + } + expected: clear + +- name: 2d.path.quadraticCurveTo.ensuresubpath.1 + desc: If there is no subpath, the first control point is added (and nothing is drawn up to it) + testing: + - 2d.path.quadratic.empty + - 2d.path.ensure + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 50; + ctx.beginPath(); + ctx.quadraticCurveTo(100, 50, 200, 50); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 95,45 == 0,255,0,255; @moz-todo + expected: green + +- name: 2d.path.quadraticCurveTo.ensuresubpath.2 + desc: If there is no subpath, the first control point is added + testing: + - 2d.path.quadratic.empty + - 2d.path.ensure + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 50; + ctx.beginPath(); + ctx.quadraticCurveTo(0, 25, 100, 25); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 5,45 == 0,255,0,255; @moz-todo + expected: green + +- name: 2d.path.quadraticCurveTo.basic + testing: + - 2d.path.quadratic.nonempty + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 50; + ctx.beginPath(); + ctx.moveTo(0, 25); + ctx.quadraticCurveTo(100, 25, 100, 25); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.quadraticCurveTo.shape + testing: + - 2d.path.quadratic.nonempty + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 55; + ctx.beginPath(); + ctx.moveTo(-1000, 1050); + ctx.quadraticCurveTo(0, -1000, 1200, 1050); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.path.quadraticCurveTo.scaled + testing: + - 2d.path.quadratic.nonempty + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.scale(1000, 1000); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 0.055; + ctx.beginPath(); + ctx.moveTo(-1, 1.05); + ctx.quadraticCurveTo(0, -1, 1.2, 1.05); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.path.quadraticCurveTo.nonfinite + desc: quadraticCurveTo() with Infinity/NaN is ignored + testing: + - 2d.nonfinite + code: | + ctx.moveTo(0, 0); + ctx.lineTo(100, 0); + @nonfinite ctx.quadraticCurveTo(<0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>); + ctx.lineTo(100, 50); + ctx.lineTo(0, 50); + ctx.fillStyle = '#0f0'; + ctx.fill(); + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 90,45 == 0,255,0,255; + expected: green + +- name: 2d.path.bezierCurveTo.ensuresubpath.1 + desc: If there is no subpath, the first control point is added (and nothing is drawn up to it) + testing: + - 2d.path.bezier.empty + - 2d.path.ensure + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 50; + ctx.beginPath(); + ctx.bezierCurveTo(100, 50, 200, 50, 200, 50); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 95,45 == 0,255,0,255; + expected: green + +- name: 2d.path.bezierCurveTo.ensuresubpath.2 + desc: If there is no subpath, the first control point is added + testing: + - 2d.path.bezier.empty + - 2d.path.ensure + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 50; + ctx.beginPath(); + ctx.bezierCurveTo(0, 25, 100, 25, 100, 25); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 5,45 == 0,255,0,255; + expected: green + +- name: 2d.path.bezierCurveTo.basic + testing: + - 2d.path.bezier.nonempty + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 50; + ctx.beginPath(); + ctx.moveTo(0, 25); + ctx.bezierCurveTo(100, 25, 100, 25, 100, 25); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.bezierCurveTo.shape + testing: + - 2d.path.bezier.nonempty + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 55; + ctx.beginPath(); + ctx.moveTo(-2000, 3100); + ctx.bezierCurveTo(-2000, -1000, 2100, -1000, 2100, 3100); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.path.bezierCurveTo.scaled + testing: + - 2d.path.bezier.nonempty + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.scale(1000, 1000); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 0.055; + ctx.beginPath(); + ctx.moveTo(-2, 3.1); + ctx.bezierCurveTo(-2, -1, 2.1, -1, 2.1, 3.1); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.path.bezierCurveTo.nonfinite + desc: bezierCurveTo() with Infinity/NaN is ignored + testing: + - 2d.nonfinite + code: | + ctx.moveTo(0, 0); + ctx.lineTo(100, 0); + @nonfinite ctx.bezierCurveTo(<0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>); + ctx.lineTo(100, 50); + ctx.lineTo(0, 50); + ctx.fillStyle = '#0f0'; + ctx.fill(); + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 90,45 == 0,255,0,255; + expected: green + +- name: 2d.path.arcTo.ensuresubpath.1 + desc: If there is no subpath, the first control point is added (and nothing is drawn up to it) + testing: + - 2d.path.arcTo.empty + - 2d.path.ensure + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.lineWidth = 50; + ctx.strokeStyle = '#f00'; + ctx.beginPath(); + ctx.arcTo(100, 50, 200, 50, 0.1); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.arcTo.ensuresubpath.2 + desc: If there is no subpath, the first control point is added + testing: + - 2d.path.arcTo.empty + - 2d.path.ensure + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.lineWidth = 50; + ctx.strokeStyle = '#0f0'; + ctx.beginPath(); + ctx.arcTo(0, 25, 50, 250, 0.1); // adds (x1,y1), draws nothing + ctx.lineTo(100, 25); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.arcTo.coincide.1 + desc: arcTo() has no effect if P0 = P1 + testing: + - 2d.path.arcTo.coincide.01 + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.lineWidth = 50; + + ctx.strokeStyle = '#0f0'; + ctx.beginPath(); + ctx.moveTo(0, 25); + ctx.arcTo(0, 25, 50, 1000, 1); + ctx.lineTo(100, 25); + ctx.stroke(); + + ctx.strokeStyle = '#f00'; + ctx.beginPath(); + ctx.moveTo(50, 25); + ctx.arcTo(50, 25, 100, 25, 1); + ctx.stroke(); + + @assert pixel 50,1 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 50,48 == 0,255,0,255; + expected: green + +- name: 2d.path.arcTo.coincide.2 + desc: arcTo() draws a straight line to P1 if P1 = P2 + testing: + - 2d.path.arcTo.coincide.12 + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.lineWidth = 50; + ctx.strokeStyle = '#0f0'; + ctx.beginPath(); + ctx.moveTo(0, 25); + ctx.arcTo(100, 25, 100, 25, 1); + ctx.stroke(); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.arcTo.collinear.1 + desc: arcTo() with all points on a line, and P1 between P0/P2, draws a straight line to P1 + testing: + - 2d.path.arcTo.collinear + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.lineWidth = 50; + + ctx.strokeStyle = '#0f0'; + ctx.beginPath(); + ctx.moveTo(0, 25); + ctx.arcTo(100, 25, 200, 25, 1); + ctx.stroke(); + + ctx.strokeStyle = '#f00'; + ctx.beginPath(); + ctx.moveTo(-100, 25); + ctx.arcTo(0, 25, 100, 25, 1); + ctx.stroke(); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.arcTo.collinear.2 + desc: arcTo() with all points on a line, and P2 between P0/P1, draws a straight line to P1 + testing: + - 2d.path.arcTo.collinear + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.lineWidth = 50; + + ctx.strokeStyle = '#0f0'; + ctx.beginPath(); + ctx.moveTo(0, 25); + ctx.arcTo(100, 25, 10, 25, 1); + ctx.stroke(); + + ctx.strokeStyle = '#f00'; + ctx.beginPath(); + ctx.moveTo(100, 25); + ctx.arcTo(200, 25, 110, 25, 1); + ctx.stroke(); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.arcTo.collinear.3 + desc: arcTo() with all points on a line, and P0 between P1/P2, draws a straight line to P1 + testing: + - 2d.path.arcTo.collinear + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.lineWidth = 50; + + ctx.strokeStyle = '#0f0'; + ctx.beginPath(); + ctx.moveTo(0, 25); + ctx.arcTo(100, 25, -100, 25, 1); + ctx.stroke(); + + ctx.strokeStyle = '#f00'; + ctx.beginPath(); + ctx.moveTo(100, 25); + ctx.arcTo(200, 25, 0, 25, 1); + ctx.stroke(); + + ctx.beginPath(); + ctx.moveTo(-100, 25); + ctx.arcTo(0, 25, -200, 25, 1); + ctx.stroke(); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.arcTo.shape.curve1 + desc: arcTo() curves in the right kind of shape + testing: + - 2d.path.arcTo.shape + code: | + var tol = 1.5; // tolerance to avoid antialiasing artifacts + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 10; + ctx.beginPath(); + ctx.moveTo(10, 25); + ctx.arcTo(75, 25, 75, 60, 20); + ctx.stroke(); + + ctx.fillStyle = '#0f0'; + ctx.beginPath(); + ctx.rect(10, 20, 45, 10); + ctx.moveTo(80, 45); + ctx.arc(55, 45, 25+tol, 0, -Math.PI/2, true); + ctx.arc(55, 45, 15-tol, -Math.PI/2, 0, false); + ctx.fill(); + + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 55,19 == 0,255,0,255; + @assert pixel 55,20 == 0,255,0,255; + @assert pixel 55,21 == 0,255,0,255; + @assert pixel 64,22 == 0,255,0,255; + @assert pixel 65,21 == 0,255,0,255; + @assert pixel 72,28 == 0,255,0,255; + @assert pixel 73,27 == 0,255,0,255; + @assert pixel 78,36 == 0,255,0,255; + @assert pixel 79,35 == 0,255,0,255; + @assert pixel 80,44 == 0,255,0,255; + @assert pixel 80,45 == 0,255,0,255; + @assert pixel 80,46 == 0,255,0,255; + @assert pixel 65,45 == 0,255,0,255; + expected: green + +- name: 2d.path.arcTo.shape.curve2 + desc: arcTo() curves in the right kind of shape + testing: + - 2d.path.arcTo.shape + code: | + var tol = 1.5; // tolerance to avoid antialiasing artifacts + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.fillStyle = '#f00'; + ctx.beginPath(); + ctx.rect(10, 20, 45, 10); + ctx.moveTo(80, 45); + ctx.arc(55, 45, 25-tol, 0, -Math.PI/2, true); + ctx.arc(55, 45, 15+tol, -Math.PI/2, 0, false); + ctx.fill(); + + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 10; + ctx.beginPath(); + ctx.moveTo(10, 25); + ctx.arcTo(75, 25, 75, 60, 20); + ctx.stroke(); + + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 55,19 == 0,255,0,255; + @assert pixel 55,20 == 0,255,0,255; + @assert pixel 55,21 == 0,255,0,255; + @assert pixel 64,22 == 0,255,0,255; + @assert pixel 65,21 == 0,255,0,255; + @assert pixel 72,28 == 0,255,0,255; + @assert pixel 73,27 == 0,255,0,255; + @assert pixel 78,36 == 0,255,0,255; + @assert pixel 79,35 == 0,255,0,255; + @assert pixel 80,44 == 0,255,0,255; + @assert pixel 80,45 == 0,255,0,255; + @assert pixel 80,46 == 0,255,0,255; + expected: green + +- name: 2d.path.arcTo.shape.start + desc: arcTo() draws a straight line from P0 to P1 + testing: + - 2d.path.arcTo.shape + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 50; + ctx.beginPath(); + ctx.moveTo(0, 25); + ctx.arcTo(200, 25, 200, 50, 10); + ctx.stroke(); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.path.arcTo.shape.end + desc: arcTo() does not draw anything from P1 to P2 + testing: + - 2d.path.arcTo.shape + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 50; + ctx.beginPath(); + ctx.moveTo(-100, -100); + ctx.arcTo(-100, 25, 200, 25, 10); + ctx.stroke(); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.path.arcTo.negative + desc: arcTo() with negative radius throws an exception + testing: + - 2d.path.arcTo.negative + code: | + @assert throws INDEX_SIZE_ERR ctx.arcTo(0, 0, 0, 0, -1); + +- name: 2d.path.arcTo.zero.1 + desc: arcTo() with zero radius draws a straight line from P0 to P1 + testing: + - 2d.path.arcTo.zeroradius + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.lineWidth = 50; + + ctx.strokeStyle = '#0f0'; + ctx.beginPath(); + ctx.moveTo(0, 25); + ctx.arcTo(100, 25, 100, 100, 0); + ctx.stroke(); + + ctx.strokeStyle = '#f00'; + ctx.beginPath(); + ctx.moveTo(0, -25); + ctx.arcTo(50, -25, 50, 50, 0); + ctx.stroke(); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.arcTo.zero.2 + desc: arcTo() with zero radius draws a straight line from P0 to P1, even when all points are collinear + testing: + - 2d.path.arcTo.zeroradius + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.lineWidth = 50; + + ctx.strokeStyle = '#0f0'; + ctx.beginPath(); + ctx.moveTo(0, 25); + ctx.arcTo(100, 25, -100, 25, 0); + ctx.stroke(); + + ctx.strokeStyle = '#f00'; + ctx.beginPath(); + ctx.moveTo(100, 25); + ctx.arcTo(200, 25, 50, 25, 0); + ctx.stroke(); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.arcTo.transformation + desc: arcTo joins up to the last subpath point correctly + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.fillStyle = '#0f0'; + ctx.beginPath(); + ctx.moveTo(0, 50); + ctx.translate(100, 0); + ctx.arcTo(50, 50, 50, 0, 50); + ctx.lineTo(-100, 0); + ctx.fill(); + + @assert pixel 0,0 == 0,255,0,255; + @assert pixel 50,0 == 0,255,0,255; + @assert pixel 99,0 == 0,255,0,255; + @assert pixel 0,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 99,25 == 0,255,0,255; + @assert pixel 0,49 == 0,255,0,255; + @assert pixel 50,49 == 0,255,0,255; + @assert pixel 99,49 == 0,255,0,255; + expected: green + +- name: 2d.path.arcTo.scale + desc: arcTo scales the curve, not just the control points + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.fillStyle = '#0f0'; + ctx.beginPath(); + ctx.moveTo(0, 50); + ctx.translate(100, 0); + ctx.scale(0.1, 1); + ctx.arcTo(50, 50, 50, 0, 50); + ctx.lineTo(-1000, 0); + ctx.fill(); + + @assert pixel 0,0 == 0,255,0,255; + @assert pixel 50,0 == 0,255,0,255; + @assert pixel 99,0 == 0,255,0,255; + @assert pixel 0,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 99,25 == 0,255,0,255; + @assert pixel 0,49 == 0,255,0,255; + @assert pixel 50,49 == 0,255,0,255; + @assert pixel 99,49 == 0,255,0,255; + expected: green + +- name: 2d.path.arcTo.nonfinite + desc: arcTo() with Infinity/NaN is ignored + testing: + - 2d.nonfinite + code: | + ctx.moveTo(0, 0); + ctx.lineTo(100, 0); + @nonfinite ctx.arcTo(<0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>); + ctx.lineTo(100, 50); + ctx.lineTo(0, 50); + ctx.fillStyle = '#0f0'; + ctx.fill(); + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 90,45 == 0,255,0,255; + expected: green + + +- name: 2d.path.arc.empty + desc: arc() with an empty path does not draw a straight line to the start point + testing: + - 2d.path.arc.nonempty + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.lineWidth = 50; + ctx.strokeStyle = '#f00'; + ctx.beginPath(); + ctx.arc(200, 25, 5, 0, 2*Math.PI, true); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.nonempty + desc: arc() with a non-empty path does draw a straight line to the start point + testing: + - 2d.path.arc.nonempty + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.lineWidth = 50; + ctx.strokeStyle = '#0f0'; + ctx.beginPath(); + ctx.moveTo(0, 25); + ctx.arc(200, 25, 5, 0, 2*Math.PI, true); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.end + desc: arc() adds the end point of the arc to the subpath + testing: + - 2d.path.arc.draw + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.lineWidth = 50; + ctx.strokeStyle = '#0f0'; + ctx.beginPath(); + ctx.moveTo(-100, 0); + ctx.arc(-100, 0, 25, -Math.PI/2, Math.PI/2, true); + ctx.lineTo(100, 25); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.default + desc: arc() with missing last argument defaults to clockwise + testing: + - 2d.path.arc.omitted + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.beginPath(); + ctx.moveTo(100, 0); + ctx.arc(100, 0, 150, -Math.PI, Math.PI/2); + ctx.fill(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.angle.1 + desc: arc() draws pi/2 .. -pi anticlockwise correctly + testing: + - 2d.path.arc.draw + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.beginPath(); + ctx.moveTo(100, 0); + ctx.arc(100, 0, 150, Math.PI/2, -Math.PI, true); + ctx.fill(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.angle.2 + desc: arc() draws -3pi/2 .. -pi anticlockwise correctly + testing: + - 2d.path.arc.draw + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.beginPath(); + ctx.moveTo(100, 0); + ctx.arc(100, 0, 150, -3*Math.PI/2, -Math.PI, true); + ctx.fill(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.angle.3 + desc: arc() wraps angles mod 2pi when anticlockwise and end > start+2pi + testing: + - 2d.path.arc.draw + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.beginPath(); + ctx.moveTo(100, 0); + ctx.arc(100, 0, 150, (512+1/2)*Math.PI, (1024-1)*Math.PI, true); + ctx.fill(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.angle.4 + desc: arc() draws a full circle when clockwise and end > start+2pi + testing: + - 2d.path.arc.draw + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.beginPath(); + ctx.moveTo(50, 25); + ctx.arc(50, 25, 60, (512+1/2)*Math.PI, (1024-1)*Math.PI, false); + ctx.fill(); + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.angle.5 + desc: arc() wraps angles mod 2pi when clockwise and start > end+2pi + testing: + - 2d.path.arc.draw + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.beginPath(); + ctx.moveTo(100, 0); + ctx.arc(100, 0, 150, (1024-1)*Math.PI, (512+1/2)*Math.PI, false); + ctx.fill(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.angle.6 + desc: arc() draws a full circle when anticlockwise and start > end+2pi + testing: + - 2d.path.arc.draw + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.beginPath(); + ctx.moveTo(50, 25); + ctx.arc(50, 25, 60, (1024-1)*Math.PI, (512+1/2)*Math.PI, true); + ctx.fill(); + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.zero.1 + desc: arc() draws nothing when startAngle = endAngle and anticlockwise + testing: + - 2d.path.arc.draw + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 100; + ctx.beginPath(); + ctx.arc(50, 25, 50, 0, 0, true); + ctx.stroke(); + @assert pixel 50,20 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.zero.2 + desc: arc() draws nothing when startAngle = endAngle and clockwise + testing: + - 2d.path.arc.draw + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 100; + ctx.beginPath(); + ctx.arc(50, 25, 50, 0, 0, false); + ctx.stroke(); + @assert pixel 50,20 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.twopie.1 + desc: arc() draws nothing when end = start + 2pi-e and anticlockwise + testing: + - 2d.path.arc.draw + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 100; + ctx.beginPath(); + ctx.arc(50, 25, 50, 0, 2*Math.PI - 1e-4, true); + ctx.stroke(); + @assert pixel 50,20 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.twopie.2 + desc: arc() draws a full circle when end = start + 2pi-e and clockwise + testing: + - 2d.path.arc.draw + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 100; + ctx.beginPath(); + ctx.arc(50, 25, 50, 0, 2*Math.PI - 1e-4, false); + ctx.stroke(); + @assert pixel 50,20 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.twopie.3 + desc: arc() draws a full circle when end = start + 2pi+e and anticlockwise + testing: + - 2d.path.arc.draw + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 100; + ctx.beginPath(); + ctx.arc(50, 25, 50, 0, 2*Math.PI + 1e-4, true); + ctx.stroke(); + @assert pixel 50,20 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.twopie.4 + desc: arc() draws nothing when end = start + 2pi+e and clockwise + testing: + - 2d.path.arc.draw + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 100; + ctx.beginPath(); + ctx.arc(50, 25, 50, 0, 2*Math.PI + 1e-4, false); + ctx.stroke(); + @assert pixel 50,20 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.shape.1 + desc: arc() from 0 to pi does not draw anything in the wrong half + testing: + - 2d.path.arc.draw + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.lineWidth = 50; + ctx.strokeStyle = '#f00'; + ctx.beginPath(); + ctx.arc(50, 50, 50, 0, Math.PI, false); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 20,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.shape.2 + desc: arc() from 0 to pi draws stuff in the right half + testing: + - 2d.path.arc.draw + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.lineWidth = 100; + ctx.strokeStyle = '#0f0'; + ctx.beginPath(); + ctx.arc(50, 50, 50, 0, Math.PI, true); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 20,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.shape.3 + desc: arc() from 0 to -pi/2 does not draw anything in the wrong quadrant + testing: + - 2d.path.arc.draw + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.lineWidth = 100; + ctx.strokeStyle = '#f00'; + ctx.beginPath(); + ctx.arc(0, 50, 50, 0, -Math.PI/2, false); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; @moz-todo + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.shape.4 + desc: arc() from 0 to -pi/2 draws stuff in the right quadrant + testing: + - 2d.path.arc.draw + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.lineWidth = 150; + ctx.strokeStyle = '#0f0'; + ctx.beginPath(); + ctx.arc(-50, 50, 100, 0, -Math.PI/2, true); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.shape.5 + desc: arc() from 0 to 5pi does not draw crazy things + testing: + - 2d.path.arc.draw + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.lineWidth = 200; + ctx.strokeStyle = '#f00'; + ctx.beginPath(); + ctx.arc(300, 0, 100, 0, 5*Math.PI, false); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.selfintersect.1 + desc: arc() with lineWidth > 2*radius is drawn sensibly + testing: + - 2d.path.arc.draw + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.lineWidth = 200; + ctx.strokeStyle = '#f00'; + ctx.beginPath(); + ctx.arc(100, 50, 25, 0, -Math.PI/2, true); + ctx.stroke(); + ctx.beginPath(); + ctx.arc(0, 0, 25, 0, -Math.PI/2, true); + ctx.stroke(); + @assert pixel 1,1 == 0,255,0,255; @moz-todo + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.selfintersect.2 + desc: arc() with lineWidth > 2*radius is drawn sensibly + testing: + - 2d.path.arc.draw + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.lineWidth = 180; + ctx.strokeStyle = '#0f0'; + ctx.beginPath(); + ctx.arc(-50, 50, 25, 0, -Math.PI/2, true); + ctx.stroke(); + ctx.beginPath(); + ctx.arc(100, 0, 25, 0, -Math.PI/2, true); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 90,10 == 0,255,0,255; + @assert pixel 97,1 == 0,255,0,255; + @assert pixel 97,2 == 0,255,0,255; + @assert pixel 97,3 == 0,255,0,255; + @assert pixel 2,48 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.negative + desc: arc() with negative radius throws INDEX_SIZE_ERR + testing: + - 2d.path.arc.negative + code: | + @assert throws INDEX_SIZE_ERR ctx.arc(0, 0, -1, 0, 0, true); + +- name: 2d.path.arc.zeroradius + desc: arc() with zero radius draws a line to the start point + testing: + - 2d.path.arc.zero + code: | + ctx.fillStyle = '#f00' + ctx.fillRect(0, 0, 100, 50); + ctx.lineWidth = 50; + ctx.strokeStyle = '#0f0'; + ctx.beginPath(); + ctx.moveTo(0, 25); + ctx.arc(200, 25, 0, 0, Math.PI, true); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.scale.1 + desc: Non-uniformly scaled arcs are the right shape + testing: + - 2d.path.transformation + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.scale(2, 0.5); + ctx.fillStyle = '#0f0'; + ctx.beginPath(); + ctx.arc(25, 50, 56, 0, 2*Math.PI, false); + ctx.fill(); + ctx.fillStyle = '#f00'; + ctx.beginPath(); + ctx.moveTo(-25, 50); + ctx.arc(-25, 50, 24, 0, 2*Math.PI, false); + ctx.moveTo(75, 50); + ctx.arc(75, 50, 24, 0, 2*Math.PI, false); + ctx.moveTo(25, -25); + ctx.arc(25, -25, 24, 0, 2*Math.PI, false); + ctx.moveTo(25, 125); + ctx.arc(25, 125, 24, 0, 2*Math.PI, false); + ctx.fill(); + + @assert pixel 0,0 == 0,255,0,255; + @assert pixel 50,0 == 0,255,0,255; + @assert pixel 99,0 == 0,255,0,255; + @assert pixel 0,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 99,25 == 0,255,0,255; + @assert pixel 0,49 == 0,255,0,255; + @assert pixel 50,49 == 0,255,0,255; + @assert pixel 99,49 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.scale.2 + desc: Highly scaled arcs are the right shape + testing: + - 2d.path.arc.draw + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.scale(100, 100); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 1.2; + ctx.beginPath(); + ctx.arc(0, 0, 0.6, 0, Math.PI/2, false); + ctx.stroke(); + + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 50,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 98,25 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 50,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.path.arc.nonfinite + desc: arc() with Infinity/NaN is ignored + testing: + - 2d.nonfinite + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.moveTo(0, 0); + ctx.lineTo(100, 0); + @nonfinite ctx.arc(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <2*Math.PI Infinity -Infinity NaN>, <true>); + ctx.lineTo(100, 50); + ctx.lineTo(0, 50); + ctx.fillStyle = '#0f0'; + ctx.fill(); + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 90,45 == 0,255,0,255; + expected: green + + +- name: 2d.path.rect.basic + testing: + - 2d.path.rect.subpath + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.rect(0, 0, 100, 50); + ctx.fill(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.rect.newsubpath + testing: + - 2d.path.rect.subpath + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.beginPath(); + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 50; + ctx.moveTo(-100, 25); + ctx.lineTo(-50, 25); + ctx.rect(200, 25, 1, 1); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.rect.closed + testing: + - 2d.path.rect.closed + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 200; + ctx.lineJoin = 'miter'; + ctx.rect(100, 50, 100, 100); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.rect.end.1 + testing: + - 2d.path.rect.newsubpath + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 100; + ctx.rect(200, 100, 400, 1000); + ctx.lineTo(-2000, -1000); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.rect.end.2 + testing: + - 2d.path.rect.newsubpath + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 450; + ctx.lineCap = 'round'; + ctx.lineJoin = 'bevel'; + ctx.rect(150, 150, 2000, 2000); + ctx.lineTo(160, 160); + ctx.stroke(); + @assert pixel 1,1 == 0,255,0,255; + @assert pixel 98,1 == 0,255,0,255; + @assert pixel 1,48 == 0,255,0,255; + @assert pixel 98,48 == 0,255,0,255; + expected: green + +- name: 2d.path.rect.zero.1 + testing: + - 2d.path.rect.subpath + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 100; + ctx.beginPath(); + ctx.rect(0, 50, 100, 0); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.rect.zero.2 + testing: + - 2d.path.rect.subpath + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 100; + ctx.beginPath(); + ctx.rect(50, -100, 0, 250); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.rect.zero.3 + testing: + - 2d.path.rect.subpath + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 100; + ctx.beginPath(); + ctx.rect(50, 25, 0, 0); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.rect.zero.4 + testing: + - 2d.path.rect.subpath + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 50; + ctx.rect(100, 25, 0, 0); + ctx.lineTo(0, 25); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.rect.zero.5 + testing: + - 2d.path.rect.subpath + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 50; + ctx.moveTo(0, 0); + ctx.rect(100, 25, 0, 0); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.rect.zero.6 + testing: + - 2d.path.rect.subpath + #mozilla: { bug: TODO } + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#f00'; + ctx.lineJoin = 'miter'; + ctx.miterLimit = 1.5; + ctx.lineWidth = 200; + ctx.beginPath(); + ctx.rect(100, 25, 1000, 0); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; @moz-todo + expected: green + +- name: 2d.path.rect.negative + testing: + - 2d.path.rect.subpath + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.beginPath(); + ctx.fillStyle = '#0f0'; + ctx.rect(0, 0, 50, 25); + ctx.rect(100, 0, -50, 25); + ctx.rect(0, 50, 50, -25); + ctx.rect(100, 50, -50, -25); + ctx.fill(); + @assert pixel 25,12 == 0,255,0,255; + @assert pixel 75,12 == 0,255,0,255; + @assert pixel 25,37 == 0,255,0,255; + @assert pixel 75,37 == 0,255,0,255; + +- name: 2d.path.rect.winding + testing: + - 2d.path.rect.subpath + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.beginPath(); + ctx.fillStyle = '#f00'; + ctx.rect(0, 0, 50, 50); + ctx.rect(100, 50, -50, -50); + ctx.rect(0, 25, 100, -25); + ctx.rect(100, 25, -100, 25); + ctx.fill(); + @assert pixel 25,12 == 0,255,0,255; + @assert pixel 75,12 == 0,255,0,255; + @assert pixel 25,37 == 0,255,0,255; + @assert pixel 75,37 == 0,255,0,255; + +- name: 2d.path.rect.selfintersect + #mozilla: { bug: TODO } + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 90; + ctx.beginPath(); + ctx.rect(45, 20, 10, 10); + ctx.stroke(); + @assert pixel 50,25 == 0,255,0,255; @moz-todo + expected: green + +- name: 2d.path.rect.nonfinite + desc: rect() with Infinity/NaN is ignored + testing: + - 2d.nonfinite + code: | + ctx.moveTo(0, 0); + ctx.lineTo(100, 0); + @nonfinite ctx.rect(<0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <1 Infinity -Infinity NaN>, <1 Infinity -Infinity NaN>); + ctx.lineTo(100, 50); + ctx.lineTo(0, 50); + ctx.fillStyle = '#0f0'; + ctx.fill(); + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 90,45 == 0,255,0,255; + expected: green + +- name: 2d.path.fill.overlap + testing: + - 2d.path.fill.basic + code: | + ctx.fillStyle = '#000'; + ctx.fillRect(0, 0, 100, 50); + + ctx.fillStyle = 'rgba(0, 255, 0, 0.5)'; + ctx.rect(0, 0, 100, 50); + ctx.closePath(); + ctx.rect(10, 10, 80, 30); + ctx.fill(); + + @assert pixel 50,25 ==~ 0,127,0,255 +/- 1; + expected: | + size 100 50 + cr.set_source_rgb(0, 0.5, 0) + cr.rectangle(0, 0, 100, 50) + cr.fill() + +- name: 2d.path.fill.winding.add + testing: + - 2d.path.fill.basic + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.fillStyle = '#0f0'; + ctx.moveTo(-10, -10); + ctx.lineTo(110, -10); + ctx.lineTo(110, 60); + ctx.lineTo(-10, 60); + ctx.lineTo(-10, -10); + ctx.lineTo(0, 0); + ctx.lineTo(100, 0); + ctx.lineTo(100, 50); + ctx.lineTo(0, 50); + ctx.fill(); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.fill.winding.subtract.1 + testing: + - 2d.path.fill.basic + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.fillStyle = '#f00'; + ctx.moveTo(-10, -10); + ctx.lineTo(110, -10); + ctx.lineTo(110, 60); + ctx.lineTo(-10, 60); + ctx.lineTo(-10, -10); + ctx.lineTo(0, 0); + ctx.lineTo(0, 50); + ctx.lineTo(100, 50); + ctx.lineTo(100, 0); + ctx.fill(); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.fill.winding.subtract.2 + testing: + - 2d.path.fill.basic + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.fillStyle = '#f00'; + ctx.moveTo(-10, -10); + ctx.lineTo(110, -10); + ctx.lineTo(110, 60); + ctx.lineTo(-10, 60); + ctx.moveTo(0, 0); + ctx.lineTo(0, 50); + ctx.lineTo(100, 50); + ctx.lineTo(100, 0); + ctx.fill(); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.fill.winding.subtract.3 + testing: + - 2d.path.fill.basic + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.fillStyle = '#0f0'; + ctx.moveTo(-10, -10); + ctx.lineTo(110, -10); + ctx.lineTo(110, 60); + ctx.lineTo(-10, 60); + ctx.lineTo(-10, -10); + ctx.lineTo(-20, -20); + ctx.lineTo(120, -20); + ctx.lineTo(120, 70); + ctx.lineTo(-20, 70); + ctx.lineTo(-20, -20); + ctx.lineTo(0, 0); + ctx.lineTo(0, 50); + ctx.lineTo(100, 50); + ctx.lineTo(100, 0); + ctx.fill(); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.fill.closed.basic + testing: + - 2d.path.fill.closed + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.fillStyle = '#0f0'; + ctx.moveTo(0, 0); + ctx.lineTo(100, 0); + ctx.lineTo(100, 50); + ctx.lineTo(0, 50); + ctx.fill(); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.fill.closed.unaffected + testing: + - 2d.path.fill.closed + code: | + ctx.fillStyle = '#00f'; + ctx.fillRect(0, 0, 100, 50); + + ctx.moveTo(0, 0); + ctx.lineTo(100, 0); + ctx.lineTo(100, 50); + ctx.fillStyle = '#f00'; + ctx.fill(); + ctx.lineTo(0, 50); + ctx.fillStyle = '#0f0'; + ctx.fill(); + + @assert pixel 90,10 == 0,255,0,255; + @assert pixel 10,40 == 0,255,0,255; + expected: green + +- name: 2d.path.stroke.overlap + desc: Stroked subpaths are combined before being drawn + testing: + - 2d.path.stroke.basic + code: | + ctx.fillStyle = '#000'; + ctx.fillRect(0, 0, 100, 50); + + ctx.strokeStyle = 'rgba(0, 255, 0, 0.5)'; + ctx.lineWidth = 50; + ctx.moveTo(0, 20); + ctx.lineTo(100, 20); + ctx.moveTo(0, 30); + ctx.lineTo(100, 30); + ctx.stroke(); + + @assert pixel 50,25 ==~ 0,127,0,255 +/- 1; + expected: | + size 100 50 + cr.set_source_rgb(0, 0.5, 0) + cr.rectangle(0, 0, 100, 50) + cr.fill() + +- name: 2d.path.stroke.union + desc: Strokes in opposite directions are unioned, not subtracted + testing: + - 2d.path.stroke.basic + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 40; + ctx.moveTo(0, 10); + ctx.lineTo(100, 10); + ctx.moveTo(100, 40); + ctx.lineTo(0, 40); + ctx.stroke(); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.stroke.unaffected + desc: Stroking does not start a new path or subpath + testing: + - 2d.path.stroke.basic + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.lineWidth = 50; + ctx.moveTo(-100, 25); + ctx.lineTo(-100, -100); + ctx.lineTo(200, -100); + ctx.lineTo(200, 25); + ctx.strokeStyle = '#f00'; + ctx.stroke(); + + ctx.closePath(); + ctx.strokeStyle = '#0f0'; + ctx.stroke(); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.stroke.scale1 + desc: Stroke line widths are scaled by the current transformation matrix + testing: + - 2d.path.transformation + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.beginPath(); + ctx.rect(25, 12.5, 50, 25); + ctx.save(); + ctx.scale(50, 25); + ctx.strokeStyle = '#0f0'; + ctx.stroke(); + ctx.restore(); + + ctx.beginPath(); + ctx.rect(-25, -12.5, 150, 75); + ctx.save(); + ctx.scale(50, 25); + ctx.strokeStyle = '#f00'; + ctx.stroke(); + ctx.restore(); + + @assert pixel 0,0 == 0,255,0,255; + @assert pixel 50,0 == 0,255,0,255; + @assert pixel 99,0 == 0,255,0,255; + @assert pixel 0,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 99,25 == 0,255,0,255; + @assert pixel 0,49 == 0,255,0,255; + @assert pixel 50,49 == 0,255,0,255; + @assert pixel 99,49 == 0,255,0,255; + expected: green + +- name: 2d.path.stroke.scale2 + desc: Stroke line widths are scaled by the current transformation matrix + testing: + - 2d.path.transformation + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.beginPath(); + ctx.rect(25, 12.5, 50, 25); + ctx.save(); + ctx.rotate(Math.PI/2); + ctx.scale(25, 50); + ctx.strokeStyle = '#0f0'; + ctx.stroke(); + ctx.restore(); + + ctx.beginPath(); + ctx.rect(-25, -12.5, 150, 75); + ctx.save(); + ctx.rotate(Math.PI/2); + ctx.scale(25, 50); + ctx.strokeStyle = '#f00'; + ctx.stroke(); + ctx.restore(); + + @assert pixel 0,0 == 0,255,0,255; + @assert pixel 50,0 == 0,255,0,255; + @assert pixel 99,0 == 0,255,0,255; + @assert pixel 0,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 99,25 == 0,255,0,255; + @assert pixel 0,49 == 0,255,0,255; + @assert pixel 50,49 == 0,255,0,255; + @assert pixel 99,49 == 0,255,0,255; + expected: green + +- name: 2d.path.stroke.skew + desc: Strokes lines are skewed by the current transformation matrix + testing: + - 2d.path.transformation + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.save(); + ctx.beginPath(); + ctx.moveTo(49, -50); + ctx.lineTo(201, -50); + ctx.rotate(Math.PI/4); + ctx.scale(1, 283); + ctx.strokeStyle = '#0f0'; + ctx.stroke(); + ctx.restore(); + + ctx.save(); + ctx.beginPath(); + ctx.translate(-150, 0); + ctx.moveTo(49, -50); + ctx.lineTo(199, -50); + ctx.rotate(Math.PI/4); + ctx.scale(1, 142); + ctx.strokeStyle = '#f00'; + ctx.stroke(); + ctx.restore(); + + ctx.save(); + ctx.beginPath(); + ctx.translate(-150, 0); + ctx.moveTo(49, -50); + ctx.lineTo(199, -50); + ctx.rotate(Math.PI/4); + ctx.scale(1, 142); + ctx.strokeStyle = '#f00'; + ctx.stroke(); + ctx.restore(); + + @assert pixel 0,0 == 0,255,0,255; + @assert pixel 50,0 == 0,255,0,255; + @assert pixel 99,0 == 0,255,0,255; + @assert pixel 0,25 == 0,255,0,255; + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 99,25 == 0,255,0,255; + @assert pixel 0,49 == 0,255,0,255; + @assert pixel 50,49 == 0,255,0,255; + @assert pixel 99,49 == 0,255,0,255; + expected: green + +- name: 2d.path.stroke.empty + desc: Empty subpaths are not stroked + testing: + - 2d.path.stroke.empty + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 100; + ctx.lineCap = 'round'; + ctx.lineJoin = 'round'; + + ctx.beginPath(); + ctx.moveTo(40, 25); + ctx.moveTo(60, 25); + ctx.stroke(); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.stroke.prune.line + desc: Zero-length line segments from lineTo are removed before stroking + testing: + - 2d.path.stroke.prune + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 100; + ctx.lineCap = 'round'; + ctx.lineJoin = 'round'; + + ctx.beginPath(); + ctx.moveTo(50, 25); + ctx.lineTo(50, 25); + ctx.stroke(); + + @assert pixel 50,25 == 0,255,0,255; @moz-todo + expected: green + +- name: 2d.path.stroke.prune.closed + desc: Zero-length line segments from closed paths are removed before stroking + testing: + - 2d.path.stroke.prune + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 100; + ctx.lineCap = 'round'; + ctx.lineJoin = 'round'; + + ctx.beginPath(); + ctx.moveTo(50, 25); + ctx.lineTo(50, 25); + ctx.closePath(); + ctx.stroke(); + + @assert pixel 50,25 == 0,255,0,255; @moz-todo + expected: green + +- name: 2d.path.stroke.prune.curve + desc: Zero-length line segments from quadraticCurveTo and bezierCurveTo are removed before stroking + testing: + - 2d.path.stroke.prune + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 100; + ctx.lineCap = 'round'; + ctx.lineJoin = 'round'; + + ctx.beginPath(); + ctx.moveTo(50, 25); + ctx.quadraticCurveTo(50, 25, 50, 25); + ctx.stroke(); + + ctx.beginPath(); + ctx.moveTo(50, 25); + ctx.bezierCurveTo(50, 25, 50, 25, 50, 25); + ctx.stroke(); + + @assert pixel 50,25 == 0,255,0,255; @moz-todo + expected: green + +- name: 2d.path.stroke.prune.arc + desc: Zero-length line segments from arcTo and arc are removed before stroking + testing: + - 2d.path.stroke.prune + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 100; + ctx.lineCap = 'round'; + ctx.lineJoin = 'round'; + + ctx.beginPath(); + ctx.moveTo(50, 25); + ctx.arcTo(50, 25, 150, 25, 10); + ctx.stroke(); + + ctx.beginPath(); + ctx.moveTo(60, 25); + ctx.arc(50, 25, 10, 0, 0, false); + ctx.stroke(); + + @assert pixel 50,25 == 0,255,0,255; @moz-todo + expected: green + +- name: 2d.path.stroke.prune.rect + desc: Zero-length line segments from rect and strokeRect are removed before stroking + testing: + - 2d.path.stroke.prune + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 100; + ctx.lineCap = 'round'; + ctx.lineJoin = 'round'; + + ctx.beginPath(); + ctx.rect(50, 25, 0, 0); + ctx.stroke(); + + ctx.strokeRect(50, 25, 0, 0); + + @assert pixel 50,25 == 0,255,0,255; @moz-todo + expected: green + +- name: 2d.path.stroke.prune.corner + desc: Zero-length line segments are removed before stroking with miters + testing: + - 2d.path.stroke.prune + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 400; + ctx.lineJoin = 'miter'; + ctx.miterLimit = 1.4; + + ctx.beginPath(); + ctx.moveTo(-1000, 200); + ctx.lineTo(-100, 200); + ctx.lineTo(-100, 200); + ctx.lineTo(-100, 200); + ctx.lineTo(-100, 1000); + ctx.stroke(); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + + +- name: 2d.path.transformation.basic + testing: + - 2d.path.transformation + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.translate(-100, 0); + ctx.rect(100, 0, 100, 50); + ctx.translate(0, -100); + ctx.fillStyle = '#0f0'; + ctx.fill(); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.transformation.multiple + # TODO: change this name + desc: Transformations are applied while building paths, not when drawing + testing: + - 2d.path.transformation + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.fillStyle = '#f00'; + ctx.translate(-100, 0); + ctx.rect(0, 0, 100, 50); + ctx.fill(); + ctx.translate(100, 0); + ctx.fill(); + + ctx.beginPath(); + ctx.strokeStyle = '#f00'; + ctx.lineWidth = 50; + ctx.translate(0, -50); + ctx.moveTo(0, 25); + ctx.lineTo(100, 25); + ctx.stroke(); + ctx.translate(0, 50); + ctx.stroke(); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.transformation.changing + desc: Transformations are applied while building paths, not when drawing + testing: + - 2d.path.transformation + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.moveTo(0, 0); + ctx.translate(100, 0); + ctx.lineTo(0, 0); + ctx.translate(0, 50); + ctx.lineTo(0, 0); + ctx.translate(-100, 0); + ctx.lineTo(0, 0); + ctx.translate(1000, 1000); + ctx.rotate(Math.PI/2); + ctx.scale(0.1, 0.1); + ctx.fill(); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + + +- name: 2d.path.clip.empty + testing: + - 2d.path.clip.basic + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.beginPath(); + ctx.clip(); + + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.clip.basic.1 + testing: + - 2d.path.clip.basic + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.beginPath(); + ctx.rect(0, 0, 100, 50); + ctx.clip(); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.clip.basic.2 + testing: + - 2d.path.clip.basic + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.beginPath(); + ctx.rect(-100, 0, 100, 50); + ctx.clip(); + + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.clip.intersect + testing: + - 2d.path.clip.basic + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.beginPath(); + ctx.rect(0, 0, 50, 50); + ctx.clip(); + ctx.beginPath(); + ctx.rect(50, 0, 50, 50) + ctx.clip(); + + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.clip.winding.1 + testing: + - 2d.path.clip.basic + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + ctx.beginPath(); + ctx.moveTo(-10, -10); + ctx.lineTo(110, -10); + ctx.lineTo(110, 60); + ctx.lineTo(-10, 60); + ctx.lineTo(-10, -10); + ctx.lineTo(0, 0); + ctx.lineTo(0, 50); + ctx.lineTo(100, 50); + ctx.lineTo(100, 0); + ctx.clip(); + + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.clip.winding.2 + testing: + - 2d.path.clip.basic + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.beginPath(); + ctx.moveTo(-10, -10); + ctx.lineTo(110, -10); + ctx.lineTo(110, 60); + ctx.lineTo(-10, 60); + ctx.lineTo(-10, -10); + ctx.clip(); + + ctx.beginPath(); + ctx.moveTo(0, 0); + ctx.lineTo(0, 50); + ctx.lineTo(100, 50); + ctx.lineTo(100, 0); + ctx.lineTo(0, 0); + ctx.clip(); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.path.clip.unaffected + testing: + - 2d.path.clip.closed + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.fillStyle = '#0f0'; + + ctx.beginPath(); + ctx.moveTo(0, 0); + ctx.lineTo(0, 50); + ctx.lineTo(100, 50); + ctx.lineTo(100, 0); + ctx.clip(); + + ctx.lineTo(0, 0); + ctx.fill(); + + @assert pixel 50,25 == 0,255,0,255; + expected: green + + + +- name: 2d.path.isPointInPath.basic.1 + desc: isPointInPath() detects whether the point is inside the path + testing: + - 2d.path.isPointInPath + code: | + ctx.rect(0, 0, 20, 20); + @assert ctx.isPointInPath(10, 10) === true; + @assert ctx.isPointInPath(30, 10) === false; + +- name: 2d.path.isPointInPath.basic.2 + desc: isPointInPath() detects whether the point is inside the path + testing: + - 2d.path.isPointInPath + code: | + ctx.rect(20, 0, 20, 20); + @assert ctx.isPointInPath(10, 10) === false; + @assert ctx.isPointInPath(30, 10) === true; + +- name: 2d.path.isPointInPath.edge + desc: isPointInPath() counts points on the path as being inside + testing: + - 2d.path.isPointInPath.edge + code: | + ctx.rect(0, 0, 20, 20); + @assert ctx.isPointInPath(0, 0) === true; + @assert ctx.isPointInPath(10, 0) === true; + @assert ctx.isPointInPath(20, 0) === true; + @assert ctx.isPointInPath(20, 10) === true; + @assert ctx.isPointInPath(20, 20) === true; + @assert ctx.isPointInPath(10, 20) === true; + @assert ctx.isPointInPath(0, 20) === true; + @assert ctx.isPointInPath(0, 10) === true; + @assert ctx.isPointInPath(10, -0.01) === false; + @assert ctx.isPointInPath(10, 20.01) === false; + @assert ctx.isPointInPath(-0.01, 10) === false; + @assert ctx.isPointInPath(20.01, 10) === false; + +- name: 2d.path.isPointInPath.empty + desc: isPointInPath() works when there is no path + testing: + - 2d.path.isPointInPath + code: | + @assert ctx.isPointInPath(0, 0) === false; + +- name: 2d.path.isPointInPath.subpath + desc: isPointInPath() uses the current path, not just the subpath + testing: + - 2d.path.isPointInPath + code: | + ctx.rect(0, 0, 20, 20); + ctx.beginPath(); + ctx.rect(20, 0, 20, 20); + ctx.closePath(); + ctx.rect(40, 0, 20, 20); + @assert ctx.isPointInPath(10, 10) === false; + @assert ctx.isPointInPath(30, 10) === true; + @assert ctx.isPointInPath(50, 10) === true; + +- name: 2d.path.isPointInPath.outside + desc: isPointInPath() works on paths outside the canvas + testing: + - 2d.path.isPointInPath + code: | + ctx.rect(0, -100, 20, 20); + ctx.rect(20, -10, 20, 20); + @assert ctx.isPointInPath(10, -110) === false; + @assert ctx.isPointInPath(10, -90) === true; + @assert ctx.isPointInPath(10, -70) === false; + @assert ctx.isPointInPath(30, -20) === false; + @assert ctx.isPointInPath(30, 0) === true; + @assert ctx.isPointInPath(30, 20) === false; + +- name: 2d.path.isPointInPath.unclosed + desc: isPointInPath() works on unclosed subpaths + testing: + - 2d.path.isPointInPath + code: | + ctx.moveTo(0, 0); + ctx.lineTo(20, 0); + ctx.lineTo(20, 20); + ctx.lineTo(0, 20); + @assert ctx.isPointInPath(10, 10) === true; + @assert ctx.isPointInPath(30, 10) === false; + +- name: 2d.path.isPointInPath.arc + desc: isPointInPath() works on arcs + testing: + - 2d.path.isPointInPath + code: | + ctx.arc(50, 25, 10, 0, Math.PI, false); + @assert ctx.isPointInPath(50, 10) === false; + @assert ctx.isPointInPath(50, 20) === false; + @assert ctx.isPointInPath(50, 30) === true; + @assert ctx.isPointInPath(50, 40) === false; + @assert ctx.isPointInPath(30, 20) === false; + @assert ctx.isPointInPath(70, 20) === false; + @assert ctx.isPointInPath(30, 30) === false; + @assert ctx.isPointInPath(70, 30) === false; + +- name: 2d.path.isPointInPath.bigarc + desc: isPointInPath() works on unclosed arcs larger than 2pi + opera: { bug: 320937 } + testing: + - 2d.path.isPointInPath + code: | + ctx.arc(50, 25, 10, 0, 7, false); + @assert ctx.isPointInPath(50, 10) === false; + @assert ctx.isPointInPath(50, 20) === true; + @assert ctx.isPointInPath(50, 30) === true; + @assert ctx.isPointInPath(50, 40) === false; + @assert ctx.isPointInPath(30, 20) === false; + @assert ctx.isPointInPath(70, 20) === false; + @assert ctx.isPointInPath(30, 30) === false; + @assert ctx.isPointInPath(70, 30) === false; + +- name: 2d.path.isPointInPath.bezier + desc: isPointInPath() works on Bezier curves + testing: + - 2d.path.isPointInPath + code: | + ctx.moveTo(25, 25); + ctx.bezierCurveTo(50, -50, 50, 100, 75, 25); + @assert ctx.isPointInPath(25, 20) === false; + @assert ctx.isPointInPath(25, 30) === false; + @assert ctx.isPointInPath(30, 20) === true; + @assert ctx.isPointInPath(30, 30) === false; + @assert ctx.isPointInPath(40, 2) === false; + @assert ctx.isPointInPath(40, 20) === true; + @assert ctx.isPointInPath(40, 30) === false; + @assert ctx.isPointInPath(40, 47) === false; + @assert ctx.isPointInPath(45, 20) === true; + @assert ctx.isPointInPath(45, 30) === false; + @assert ctx.isPointInPath(55, 20) === false; + @assert ctx.isPointInPath(55, 30) === true; + @assert ctx.isPointInPath(60, 2) === false; + @assert ctx.isPointInPath(60, 20) === false; + @assert ctx.isPointInPath(60, 30) === true; + @assert ctx.isPointInPath(60, 47) === false; + @assert ctx.isPointInPath(70, 20) === false; + @assert ctx.isPointInPath(70, 30) === true; + @assert ctx.isPointInPath(75, 20) === false; + @assert ctx.isPointInPath(75, 30) === false; + +- name: 2d.path.isPointInPath.winding + desc: isPointInPath() uses the non-zero winding number rule + testing: + - 2d.path.isPointInPath + code: | + // Create a square ring, using opposite windings to make a hole in the centre + ctx.moveTo(0, 0); + ctx.lineTo(50, 0); + ctx.lineTo(50, 50); + ctx.lineTo(0, 50); + ctx.lineTo(0, 0); + ctx.lineTo(10, 10); + ctx.lineTo(10, 40); + ctx.lineTo(40, 40); + ctx.lineTo(40, 10); + ctx.lineTo(10, 10); + + @assert ctx.isPointInPath(5, 5) === true; + @assert ctx.isPointInPath(25, 5) === true; + @assert ctx.isPointInPath(45, 5) === true; + @assert ctx.isPointInPath(5, 25) === true; + @assert ctx.isPointInPath(25, 25) === false; + @assert ctx.isPointInPath(45, 25) === true; + @assert ctx.isPointInPath(5, 45) === true; + @assert ctx.isPointInPath(25, 45) === true; + @assert ctx.isPointInPath(45, 45) === true; + +- name: 2d.path.isPointInPath.transform.1 + desc: isPointInPath() handles transformations correctly + testing: + - 2d.path.isPointInPath + code: | + ctx.translate(50, 0); + ctx.rect(0, 0, 20, 20); + @assert ctx.isPointInPath(-40, 10) === false; + @assert ctx.isPointInPath(10, 10) === false; + @assert ctx.isPointInPath(49, 10) === false; + @assert ctx.isPointInPath(51, 10) === true; + @assert ctx.isPointInPath(69, 10) === true; + @assert ctx.isPointInPath(71, 10) === false; + +- name: 2d.path.isPointInPath.transform.2 + desc: isPointInPath() handles transformations correctly + testing: + - 2d.path.isPointInPath + code: | + ctx.rect(50, 0, 20, 20); + ctx.translate(50, 0); + @assert ctx.isPointInPath(-40, 10) === false; + @assert ctx.isPointInPath(10, 10) === false; + @assert ctx.isPointInPath(49, 10) === false; + @assert ctx.isPointInPath(51, 10) === true; + @assert ctx.isPointInPath(69, 10) === true; + @assert ctx.isPointInPath(71, 10) === false; + +- name: 2d.path.isPointInPath.transform.3 + desc: isPointInPath() handles transformations correctly + testing: + - 2d.path.isPointInPath + code: | + ctx.scale(-1, 1); + ctx.rect(-70, 0, 20, 20); + @assert ctx.isPointInPath(-40, 10) === false; + @assert ctx.isPointInPath(10, 10) === false; + @assert ctx.isPointInPath(49, 10) === false; + @assert ctx.isPointInPath(51, 10) === true; + @assert ctx.isPointInPath(69, 10) === true; + @assert ctx.isPointInPath(71, 10) === false; + +- name: 2d.path.isPointInPath.transform.4 + desc: isPointInPath() handles transformations correctly + testing: + - 2d.path.isPointInPath + code: | + ctx.translate(50, 0); + ctx.rect(50, 0, 20, 20); + ctx.translate(0, 50); + @assert ctx.isPointInPath(60, 10) === false; + @assert ctx.isPointInPath(110, 10) === true; + @assert ctx.isPointInPath(110, 60) === false; + +- name: 2d.path.isPointInPath.nonfinite + desc: isPointInPath() returns false for non-finite arguments + testing: + - 2d.path.isPointInPath.nonfinite + code: | + ctx.rect(-100, -50, 200, 100); + @assert ctx.isPointInPath(Infinity, 0) === false; + @assert ctx.isPointInPath(-Infinity, 0) === false; + @assert ctx.isPointInPath(NaN, 0) === false; + @assert ctx.isPointInPath(0, Infinity) === false; + @assert ctx.isPointInPath(0, -Infinity) === false; + @assert ctx.isPointInPath(0, NaN) === false; + @assert ctx.isPointInPath(NaN, NaN) === false; + + +- name: 2d.drawImage.3arg + testing: + - 2d.drawImage.defaultsource + - 2d.drawImage.defaultdest + images: + - red.png + - green.png + code: | + ctx.drawImage(document.getElementById('green.png'), 0, 0); + ctx.drawImage(document.getElementById('red.png'), -100, 0); + ctx.drawImage(document.getElementById('red.png'), 100, 0); + ctx.drawImage(document.getElementById('red.png'), 0, -50); + ctx.drawImage(document.getElementById('red.png'), 0, 50); + + @assert pixel 0,0 ==~ 0,255,0,255; + @assert pixel 99,0 ==~ 0,255,0,255; + @assert pixel 0,49 ==~ 0,255,0,255; + @assert pixel 99,49 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.5arg + testing: + - 2d.drawImage.defaultsource + images: + - red.png + - green.png + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.drawImage(document.getElementById('green.png'), 50, 0, 50, 50); + ctx.drawImage(document.getElementById('red.png'), 0, 0, 50, 50); + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 50, 50); + + @assert pixel 0,0 ==~ 0,255,0,255; + @assert pixel 99,0 ==~ 0,255,0,255; + @assert pixel 0,49 ==~ 0,255,0,255; + @assert pixel 99,49 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.9arg.basic + testing: + - 2d.drawImage.paint + images: + - green.png + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.drawImage(document.getElementById('green.png'), 0, 0, 100, 50, 0, 0, 100, 50); + @assert pixel 0,0 ==~ 0,255,0,255; + @assert pixel 99,0 ==~ 0,255,0,255; + @assert pixel 0,49 ==~ 0,255,0,255; + @assert pixel 99,49 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.9arg.sourcepos + testing: + - 2d.drawImage.paint + images: + - rgrg-256x256.png + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.drawImage(document.getElementById('rgrg-256x256.png'), 140, 20, 100, 50, 0, 0, 100, 50); + @assert pixel 0,0 ==~ 0,255,0,255; + @assert pixel 99,0 ==~ 0,255,0,255; + @assert pixel 0,49 ==~ 0,255,0,255; + @assert pixel 99,49 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.9arg.sourcesize + testing: + - 2d.drawImage.paint + images: + - rgrg-256x256.png + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.drawImage(document.getElementById('rgrg-256x256.png'), 0, 0, 256, 256, 0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 51, 26); + ctx.fillRect(49, 24, 51, 26); + @assert pixel 0,0 ==~ 0,255,0,255; + @assert pixel 99,0 ==~ 0,255,0,255; + @assert pixel 0,49 ==~ 0,255,0,255; + @assert pixel 99,49 ==~ 0,255,0,255; + @assert pixel 20,20 ==~ 0,255,0,255; + @assert pixel 80,20 ==~ 0,255,0,255; + @assert pixel 20,30 ==~ 0,255,0,255; + @assert pixel 80,30 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.9arg.destpos + testing: + - 2d.drawImage.paint + images: + - red.png + - green.png + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.drawImage(document.getElementById('green.png'), 0, 0, 100, 50, 0, 0, 100, 50); + ctx.drawImage(document.getElementById('red.png'), 0, 0, 100, 50, -100, 0, 100, 50); + ctx.drawImage(document.getElementById('red.png'), 0, 0, 100, 50, 100, 0, 100, 50); + ctx.drawImage(document.getElementById('red.png'), 0, 0, 100, 50, 0, -50, 100, 50); + ctx.drawImage(document.getElementById('red.png'), 0, 0, 100, 50, 0, 50, 100, 50); + @assert pixel 0,0 ==~ 0,255,0,255; + @assert pixel 99,0 ==~ 0,255,0,255; + @assert pixel 0,49 ==~ 0,255,0,255; + @assert pixel 99,49 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.9arg.destsize + testing: + - 2d.drawImage.paint + images: + - red.png + - green.png + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.drawImage(document.getElementById('green.png'), 1, 1, 1, 1, 0, 0, 100, 50); + ctx.drawImage(document.getElementById('red.png'), 0, 0, 100, 50, -50, 0, 50, 50); + ctx.drawImage(document.getElementById('red.png'), 0, 0, 100, 50, 100, 0, 50, 50); + ctx.drawImage(document.getElementById('red.png'), 0, 0, 100, 50, 0, -25, 100, 25); + ctx.drawImage(document.getElementById('red.png'), 0, 0, 100, 50, 0, 50, 100, 25); + @assert pixel 0,0 ==~ 0,255,0,255; + @assert pixel 99,0 ==~ 0,255,0,255; + @assert pixel 0,49 ==~ 0,255,0,255; + @assert pixel 99,49 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.canvas + testing: + - 2d.drawImage.paint + code: | + var canvas2 = document.createElement('canvas'); + canvas2.width = 100; + canvas2.height = 50; + var ctx2 = canvas2.getContext('2d'); + ctx2.fillStyle = '#0f0'; + ctx2.fillRect(0, 0, 100, 50); + + ctx.fillStyle = '#f00'; + ctx.drawImage(canvas2, 0, 0); + + @assert pixel 0,0 ==~ 0,255,0,255; + @assert pixel 99,0 ==~ 0,255,0,255; + @assert pixel 0,49 ==~ 0,255,0,255; + @assert pixel 99,49 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.self.1 + testing: + - 2d.drawImage.self + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 50, 50); + ctx.fillStyle = '#f00'; + ctx.fillRect(50, 0, 50, 50); + ctx.drawImage(canvas, 50, 0); + + @assert pixel 0,0 ==~ 0,255,0,255; + @assert pixel 99,0 ==~ 0,255,0,255; + @assert pixel 0,49 ==~ 0,255,0,255; + @assert pixel 99,49 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.self.2 + testing: + - 2d.drawImage.self + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 1, 100, 49); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 1); + ctx.drawImage(canvas, 0, 1); + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 2); + + @assert pixel 0,0 ==~ 0,255,0,255; + @assert pixel 99,0 ==~ 0,255,0,255; + @assert pixel 0,49 ==~ 0,255,0,255; + @assert pixel 99,49 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.null + testing: + - 2d.drawImage.IDL + code: | + @assert throws TypeError ctx.drawImage(null, 0, 0); + +- name: 2d.drawImage.wrongtype + desc: Incorrect image types in drawImage do not match any defined overloads, so WebIDL throws a TypeError + notes: *bindings + testing: + - 2d.drawImage.IDL + code: | + @assert throws TypeError ctx.drawImage(undefined, 0, 0); + @assert throws TypeError ctx.drawImage(0, 0, 0); + @assert throws TypeError ctx.drawImage("", 0, 0); + @assert throws TypeError ctx.drawImage(document.createElement('p'), 0, 0); + +- name: 2d.drawImage.floatsource + testing: + - 2d.drawImage.paint + images: + - green.png + code: | + ctx.drawImage(document.getElementById('green.png'), 10.1, 10.1, 0.1, 0.1, 0, 0, 100, 50); + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.zerosource + desc: drawImage with zero-sized source rectangle throws INDEX_SIZE_ERR + testing: + - 2d.drawImage.zerosource + images: + - red.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + @assert throws INDEX_SIZE_ERR ctx.drawImage(document.getElementById('red.png'), 10, 10, 0, 1, 0, 0, 100, 50); + @assert throws INDEX_SIZE_ERR ctx.drawImage(document.getElementById('red.png'), 10, 10, 1, 0, 0, 0, 100, 50); + @assert throws INDEX_SIZE_ERR ctx.drawImage(document.getElementById('red.png'), 10, 10, 0, 0, 0, 0, 100, 50); + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.zerosource.image + desc: drawImage with zero-sized source rectangle from image throws INDEX_SIZE_ERR + testing: + - 2d.drawImage.zerosource + images: + - red-zerowidth.svg + - red-zeroheight.svg + - red-zerosize.svg + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + @assert throws INDEX_SIZE_ERR ctx.drawImage(document.getElementById('red-zerowidth.svg'), 0, 0, 100, 50); + @assert throws INDEX_SIZE_ERR ctx.drawImage(document.getElementById('red-zeroheight.svg'), 0, 0, 100, 50); + @assert throws INDEX_SIZE_ERR ctx.drawImage(document.getElementById('red-zerosize.svg'), 0, 0, 100, 50); + @assert pixel 50,25 == 0,255,0,255; + expected: green + +- name: 2d.drawImage.negativesource + desc: Negative source width/height represents the correct rectangle + testing: + - 2d.drawImage.direction + mozilla: { throws } + images: + - ggrr-256x256.png + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.drawImage(document.getElementById('ggrr-256x256.png'), 100, 78, -100, 50, 0, 0, 50, 50); + ctx.drawImage(document.getElementById('ggrr-256x256.png'), 100, 128, -100, -50, 50, 0, 50, 50); + @assert pixel 1,1 ==~ 0,255,0,255; + @assert pixel 1,48 ==~ 0,255,0,255; + @assert pixel 98,1 ==~ 0,255,0,255; + @assert pixel 98,48 ==~ 0,255,0,255; + @assert pixel 48,1 ==~ 0,255,0,255; + @assert pixel 48,48 ==~ 0,255,0,255; + @assert pixel 51,1 ==~ 0,255,0,255; + @assert pixel 51,48 ==~ 0,255,0,255; + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.negativedest + desc: Negative destination width/height represents the correct rectangle + testing: + - 2d.drawImage.direction + mozilla: { throws } + images: + - ggrr-256x256.png + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.drawImage(document.getElementById('ggrr-256x256.png'), 100, 78, 50, 50, 0, 50, 50, -50); + ctx.drawImage(document.getElementById('ggrr-256x256.png'), 100, 128, 50, -50, 100, 50, -50, -50); + @assert pixel 1,1 ==~ 0,255,0,255; + @assert pixel 1,48 ==~ 0,255,0,255; + @assert pixel 98,1 ==~ 0,255,0,255; + @assert pixel 98,48 ==~ 0,255,0,255; + @assert pixel 48,1 ==~ 0,255,0,255; + @assert pixel 48,48 ==~ 0,255,0,255; + @assert pixel 51,1 ==~ 0,255,0,255; + @assert pixel 51,48 ==~ 0,255,0,255; + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.negativedir + desc: Negative dimensions do not affect the direction of the image + testing: + - 2d.drawImage.direction + mozilla: { throws } + images: + - ggrr-256x256.png + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.drawImage(document.getElementById('ggrr-256x256.png'), 0, 178, 50, -100, 0, 0, 50, 100); + ctx.drawImage(document.getElementById('ggrr-256x256.png'), 0, 78, 50, 100, 50, 100, 50, -100); + @assert pixel 1,1 ==~ 0,255,0,255; + @assert pixel 1,48 ==~ 0,255,0,255; + @assert pixel 98,1 ==~ 0,255,0,255; + @assert pixel 98,48 ==~ 0,255,0,255; + @assert pixel 48,1 ==~ 0,255,0,255; + @assert pixel 48,48 ==~ 0,255,0,255; + @assert pixel 51,1 ==~ 0,255,0,255; + @assert pixel 51,48 ==~ 0,255,0,255; + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.outsidesource + DISABLED: fix this to match the current spec (transparent black outside source) + testing: + - 2d.drawImage.outsidesource + mozilla: { throws } + images: + - green.png + - red.png + code: | + ctx.drawImage(document.getElementById('green.png'), 10.5, 10.5, 89.5, 39.5, 0, 0, 100, 50); + ctx.drawImage(document.getElementById('green.png'), 5.5, 5.5, -5.5, -5.5, 0, 0, 100, 50); + ctx.drawImage(document.getElementById('green.png'), 100, 50, -5, -5, 0, 0, 100, 50); + @assert throws INDEX_SIZE_ERR ctx.drawImage(document.getElementById('red.png'), -0.001, 0, 100, 50, 0, 0, 100, 50); + @assert throws INDEX_SIZE_ERR ctx.drawImage(document.getElementById('red.png'), 0, -0.001, 100, 50, 0, 0, 100, 50); + @assert throws INDEX_SIZE_ERR ctx.drawImage(document.getElementById('red.png'), 0, 0, 100.001, 50, 0, 0, 100, 50); + @assert throws INDEX_SIZE_ERR ctx.drawImage(document.getElementById('red.png'), 0, 0, 100, 50.001, 0, 0, 100, 50); + @assert throws INDEX_SIZE_ERR ctx.drawImage(document.getElementById('red.png'), 50, 0, 50.001, 50, 0, 0, 100, 50); @moz-todo + @assert throws INDEX_SIZE_ERR ctx.drawImage(document.getElementById('red.png'), 0, 0, -5, 5, 0, 0, 100, 50); + @assert throws INDEX_SIZE_ERR ctx.drawImage(document.getElementById('red.png'), 0, 0, 5, -5, 0, 0, 100, 50); + @assert throws INDEX_SIZE_ERR ctx.drawImage(document.getElementById('red.png'), 110, 60, -20, -20, 0, 0, 100, 50); + @assert pixel 50,25 ==~ 0,255,0,255; @moz-todo + expected: green + +- name: 2d.drawImage.incomplete.nosrc + testing: + - 2d.drawImage.incomplete.image + mozilla: { throws } + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + var img = new Image(); + ctx.drawImage(img, 0, 0); + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.incomplete.immediate + testing: + - 2d.drawImage.incomplete.image + images: + - red.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + var img = new Image(); + img.src = '../images/red.png'; + // This triggers the "update the image data" algorithm. + // The image will not go to the "completely available" state + // until a fetch task in the networking task source is processed, + // so the image must not be fully decodable yet: + ctx.drawImage(img, 0, 0); + @assert pixel 50,25 ==~ 0,255,0,255; @moz-todo + expected: green + +- name: 2d.drawImage.incomplete.reload + testing: + - 2d.drawImage.incomplete.image + images: + - yellow.png + - red.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + var img = document.getElementById('yellow.png'); + img.src = '../images/red.png'; + // This triggers the "update the image data" algorithm, + // and resets the image to the "unavailable" state. + // The image will not go to the "completely available" state + // until a fetch task in the networking task source is processed, + // so the image must not be fully decodable yet: + ctx.drawImage(img, 0, 0); + @assert pixel 50,25 ==~ 0,255,0,255; @moz-todo + expected: green + +- name: 2d.drawImage.incomplete.emptysrc + testing: + - 2d.drawImage.incomplete.image + images: + - red.png + mozilla: { throws } + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + var img = document.getElementById('red.png'); + img.src = ""; + ctx.drawImage(img, 0, 0); + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.incomplete.removedsrc + testing: + - 2d.drawImage.incomplete.image + images: + - red.png + mozilla: { throws } + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + var img = document.getElementById('red.png'); + img.removeAttribute('src'); + ctx.drawImage(img, 0, 0); + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.broken + testing: + - 2d.drawImage.incomplete.image + images: + - broken.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + var img = document.getElementById('broken.png'); + ctx.drawImage(img, 0, 0); + @assert pixel 50,25 ==~ 0,255,0,255; @moz-todo + expected: green + +- name: 2d.drawImage.zerocanvas + testing: + - 2d.drawImage.zerocanvas + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + + var canvas2 = document.createElement('canvas'); + canvas2.width = 0; + canvas2.height = 10; + @assert throws INVALID_STATE_ERR ctx.drawImage(canvas2, 0, 0); + + canvas2.width = 10; + canvas2.height = 0; + @assert throws INVALID_STATE_ERR ctx.drawImage(canvas2, 0, 0); + + canvas2.width = 0; + canvas2.height = 0; + @assert throws INVALID_STATE_ERR ctx.drawImage(canvas2, 0, 0); + + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.svg + desc: drawImage() of an SVG image + testing: + - 2d.drawImage.svg + images: + - green.svg + code: | + ctx.drawImage(document.getElementById('green.svg'), 0, 0); + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.animated.gif + desc: drawImage() of an animated GIF draws the first frame + testing: + - 2d.drawImage.animated.image + images: + - anim-gr.gif + code: | + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.drawImage(document.getElementById('anim-gr.gif'), 0, 0); + @assert pixel 50,25 ==~ 0,255,0,255; + }), 500); + expected: green + +- name: 2d.drawImage.animated.apng + desc: drawImage() of an APNG with no poster frame draws the first frame + testing: + - 2d.drawImage.animated.image + images: + - anim-gr.png + code: | + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.drawImage(document.getElementById('anim-gr.png'), 0, 0); + @assert pixel 50,25 ==~ 0,255,0,255; + }), 500); + expected: green + +- name: 2d.drawImage.animated.poster + desc: drawImage() of an APNG draws the poster frame + testing: + - 2d.drawImage.animated.image + images: + - anim-poster-gr.png + code: | + ctx.drawImage(document.getElementById('anim-poster-gr.png'), 0, 0); + @assert pixel 50,25 ==~ 0,255,0,255; @moz-todo + expected: green + +- name: 2d.drawImage.path + testing: + - 2d.drawImage.unaffect + images: + - red.png + code: | + ctx.fillStyle = '#0f0'; + ctx.rect(0, 0, 100, 50); + ctx.drawImage(document.getElementById('red.png'), 0, 0); + ctx.fill(); + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.transform + testing: + - 2d.drawImage.subject + images: + - red.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.translate(100, 0); + ctx.drawImage(document.getElementById('red.png'), 0, 0); + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +# TODO: drawImage shadows + +- name: 2d.drawImage.alpha + testing: + - 2d.drawImage.subject + images: + - red.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.globalAlpha = 0; + ctx.drawImage(document.getElementById('red.png'), 0, 0); + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.clip + testing: + - 2d.drawImage.subject + images: + - red.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.rect(-10, -10, 1, 1); + ctx.clip(); + ctx.drawImage(document.getElementById('red.png'), 0, 0); + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.composite + testing: + - 2d.drawImage.subject + images: + - red.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.globalCompositeOperation = 'destination-over'; + ctx.drawImage(document.getElementById('red.png'), 0, 0); + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.nowrap + desc: Stretched images do not get pixels wrapping around the edges + images: + - redtransparent.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.drawImage(document.getElementById('redtransparent.png'), -1950, 0, 2000, 50); + @assert pixel 45,25 ==~ 0,255,0,255; + @assert pixel 50,25 ==~ 0,255,0,255; + @assert pixel 55,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.drawImage.nonfinite + desc: drawImage() with Infinity/NaN is ignored + testing: + - 2d.nonfinite + images: + - red.png + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + var red = document.getElementById('red.png'); + @nonfinite ctx.drawImage(<red>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>); + @nonfinite ctx.drawImage(<red>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <100 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>); + @nonfinite ctx.drawImage(<red>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <100 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <100 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>); + @assert pixel 50,25 == 0,255,0,255; + expected: green + + + +- name: 2d.imageData.create2.basic + desc: createImageData(sw, sh) exists and returns something + testing: + - 2d.imageData.create2.object + code: | + @assert ctx.createImageData(1, 1) !== null; + +- name: 2d.imageData.create1.basic + desc: createImageData(imgdata) exists and returns something + testing: + - 2d.imageData.create1.object + code: | + @assert ctx.createImageData(ctx.createImageData(1, 1)) !== null; + +- name: 2d.imageData.create2.type + desc: createImageData(sw, sh) returns an ImageData object containing a Uint8ClampedArray object + testing: + - 2d.imageData.create2.object + code: | + @assert window.ImageData !== undefined; + @assert window.Uint8ClampedArray !== undefined; + window.ImageData.prototype.thisImplementsImageData = true; + window.Uint8ClampedArray.prototype.thisImplementsUint8ClampedArray = true; + var imgdata = ctx.createImageData(1, 1); + @assert imgdata.thisImplementsImageData; + @assert imgdata.data.thisImplementsUint8ClampedArray; + +- name: 2d.imageData.create1.type + desc: createImageData(imgdata) returns an ImageData object containing a Uint8ClampedArray object + testing: + - 2d.imageData.create1.object + code: | + @assert window.ImageData !== undefined; + @assert window.Uint8ClampedArray !== undefined; + window.ImageData.prototype.thisImplementsImageData = true; + window.Uint8ClampedArray.prototype.thisImplementsUint8ClampedArray = true; + var imgdata = ctx.createImageData(ctx.createImageData(1, 1)); + @assert imgdata.thisImplementsImageData; + @assert imgdata.data.thisImplementsUint8ClampedArray; + +- name: 2d.imageData.create2.this + desc: createImageData(sw, sh) should throw when called with the wrong |this| + notes: *bindings + testing: + - 2d.imageData.create2.object + code: | + @assert throws TypeError CanvasRenderingContext2D.prototype.createImageData.call(null, 1, 1); @moz-todo + @assert throws TypeError CanvasRenderingContext2D.prototype.createImageData.call(undefined, 1, 1); @moz-todo + @assert throws TypeError CanvasRenderingContext2D.prototype.createImageData.call({}, 1, 1); @moz-todo + +- name: 2d.imageData.create1.this + desc: createImageData(imgdata) should throw when called with the wrong |this| + notes: *bindings + testing: + - 2d.imageData.create2.object + code: | + var imgdata = ctx.createImageData(1, 1); + @assert throws TypeError CanvasRenderingContext2D.prototype.createImageData.call(null, imgdata); @moz-todo + @assert throws TypeError CanvasRenderingContext2D.prototype.createImageData.call(undefined, imgdata); @moz-todo + @assert throws TypeError CanvasRenderingContext2D.prototype.createImageData.call({}, imgdata); @moz-todo + +- name: 2d.imageData.create2.initial + desc: createImageData(sw, sh) returns transparent black data of the right size + testing: + - 2d.imageData.create2.size + - 2d.imageData.create.initial + - 2d.imageData.initial + code: | + var imgdata = ctx.createImageData(10, 20); + @assert imgdata.data.length === imgdata.width*imgdata.height*4; + @assert imgdata.width < imgdata.height; + @assert imgdata.width > 0; + var isTransparentBlack = true; + for (var i = 0; i < imgdata.data.length; ++i) + if (imgdata.data[i] !== 0) + isTransparentBlack = false; + @assert isTransparentBlack; + +- name: 2d.imageData.create1.initial + desc: createImageData(imgdata) returns transparent black data of the right size + testing: + - 2d.imageData.create1.size + - 2d.imageData.create.initial + - 2d.imageData.initial + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + var imgdata1 = ctx.getImageData(0, 0, 10, 20); + var imgdata2 = ctx.createImageData(imgdata1); + @assert imgdata2.data.length === imgdata1.data.length; + @assert imgdata2.width === imgdata1.width; + @assert imgdata2.height === imgdata1.height; + var isTransparentBlack = true; + for (var i = 0; i < imgdata2.data.length; ++i) + if (imgdata2.data[i] !== 0) + isTransparentBlack = false; + @assert isTransparentBlack; + +- name: 2d.imageData.create2.large + desc: createImageData(sw, sh) works for sizes much larger than the canvas + testing: + - 2d.imageData.create2.size + code: | + var imgdata = ctx.createImageData(1000, 2000); + @assert imgdata.data.length === imgdata.width*imgdata.height*4; + @assert imgdata.width < imgdata.height; + @assert imgdata.width > 0; + var isTransparentBlack = true; + for (var i = 0; i < imgdata.data.length; i += 7813) // check ~1024 points (assuming normal scaling) + if (imgdata.data[i] !== 0) + isTransparentBlack = false; + @assert isTransparentBlack; + +- name: 2d.imageData.create2.tiny + desc: createImageData(sw, sh) works for sizes smaller than one pixel + testing: + - 2d.imageData.create2.size + - 2d.imageData.one + code: | + var imgdata = ctx.createImageData(0.0001, 0.0001); + @assert imgdata.data.length === imgdata.width*imgdata.height*4; + @assert imgdata.width === 1; + @assert imgdata.height === 1; + var isTransparentBlack = true; + for (var i = 0; i < imgdata.data.length; ++i) + if (imgdata.data[i] !== 0) + isTransparentBlack = false; + @assert isTransparentBlack; + +- name: 2d.imageData.create2.negative + desc: createImageData(sw, sh) takes the absolute magnitude of the size arguments + testing: + - 2d.imageData.create2.size + code: | + var imgdata1 = ctx.createImageData(10, 20); + var imgdata2 = ctx.createImageData(-10, 20); + var imgdata3 = ctx.createImageData(10, -20); + var imgdata4 = ctx.createImageData(-10, -20); + @assert imgdata1.data.length === imgdata2.data.length; + @assert imgdata2.data.length === imgdata3.data.length; + @assert imgdata3.data.length === imgdata4.data.length; + +- name: 2d.imageData.create2.zero + desc: createImageData(sw, sh) throws INDEX_SIZE_ERR if size is zero + testing: + - 2d.imageData.getcreate.zero + code: | + @assert throws INDEX_SIZE_ERR ctx.createImageData(10, 0); + @assert throws INDEX_SIZE_ERR ctx.createImageData(0, 10); + @assert throws INDEX_SIZE_ERR ctx.createImageData(0, 0); + +- name: 2d.imageData.create2.nonfinite + desc: createImageData() throws TypeError if arguments are not finite + notes: *bindings + testing: + - 2d.imageData.getcreate.nonfinite + code: | + @nonfinite @assert throws TypeError ctx.createImageData(<10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>); + var posinfobj = { valueOf: function() { return Infinity; } }, + neginfobj = { valueOf: function() { return -Infinity; } }, + nanobj = { valueOf: function() { return -Infinity; } }; + @nonfinite @assert throws TypeError ctx.createImageData(<10 posinfobj neginfobj nanobj>, <10 posinfobj neginfobj nanobj>); + +- name: 2d.imageData.create1.zero + desc: createImageData(null) throws TypeError + testing: + - 2d.imageData.create.null + code: | + @assert throws TypeError ctx.createImageData(null); + +- name: 2d.imageData.create2.round + desc: createImageData(w, h) is rounded the same as getImageData(0, 0, w, h) + testing: + - 2d.imageData.createround + code: | + var imgdata1 = ctx.createImageData(10.01, 10.99); + var imgdata2 = ctx.getImageData(0, 0, 10.01, 10.99); + @assert imgdata1.width === imgdata2.width; + @assert imgdata1.height === imgdata2.height; + +- name: 2d.imageData.get.basic + desc: getImageData() exists and returns something + testing: + - 2d.imageData.get.basic + code: | + @assert ctx.getImageData(0, 0, 100, 50) !== null; + +- name: 2d.imageData.get.type + desc: getImageData() returns an ImageData object containing a Uint8ClampedArray object + testing: + - 2d.imageData.get.object + code: | + @assert window.ImageData !== undefined; + @assert window.Uint8ClampedArray !== undefined; + window.ImageData.prototype.thisImplementsImageData = true; + window.Uint8ClampedArray.prototype.thisImplementsUint8ClampedArray = true; + var imgdata = ctx.getImageData(0, 0, 1, 1); + @assert imgdata.thisImplementsImageData; + @assert imgdata.data.thisImplementsUint8ClampedArray; + +- name: 2d.imageData.get.zero + desc: getImageData() throws INDEX_SIZE_ERR if size is zero + testing: + - 2d.imageData.getcreate.zero + code: | + @assert throws INDEX_SIZE_ERR ctx.getImageData(1, 1, 10, 0); + @assert throws INDEX_SIZE_ERR ctx.getImageData(1, 1, 0, 10); + @assert throws INDEX_SIZE_ERR ctx.getImageData(1, 1, 0, 0); + +- name: 2d.imageData.get.nonfinite + desc: getImageData() throws TypeError if arguments are not finite + notes: *bindings + testing: + - 2d.imageData.getcreate.nonfinite + code: | + @nonfinite @assert throws TypeError ctx.getImageData(<10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>); + var posinfobj = { valueOf: function() { return Infinity; } }, + neginfobj = { valueOf: function() { return -Infinity; } }, + nanobj = { valueOf: function() { return -Infinity; } }; + @nonfinite @assert throws TypeError ctx.getImageData(<10 posinfobj neginfobj nanobj>, <10 posinfobj neginfobj nanobj>, <10 posinfobj neginfobj nanobj>, <10 posinfobj neginfobj nanobj>); + +- name: 2d.imageData.get.source.outside + desc: getImageData() returns transparent black outside the canvas + testing: + - 2d.imageData.get.basic + - 2d.imageData.get.outside + code: | + ctx.fillStyle = '#08f'; + ctx.fillRect(0, 0, 100, 50); + + var imgdata1 = ctx.getImageData(-10, 5, 1, 1); + @assert imgdata1.data[0] === 0; + @assert imgdata1.data[1] === 0; + @assert imgdata1.data[2] === 0; + @assert imgdata1.data[3] === 0; + + var imgdata2 = ctx.getImageData(10, -5, 1, 1); + @assert imgdata2.data[0] === 0; + @assert imgdata2.data[1] === 0; + @assert imgdata2.data[2] === 0; + @assert imgdata2.data[3] === 0; + + var imgdata3 = ctx.getImageData(200, 5, 1, 1); + @assert imgdata3.data[0] === 0; + @assert imgdata3.data[1] === 0; + @assert imgdata3.data[2] === 0; + @assert imgdata3.data[3] === 0; + + var imgdata4 = ctx.getImageData(10, 60, 1, 1); + @assert imgdata4.data[0] === 0; + @assert imgdata4.data[1] === 0; + @assert imgdata4.data[2] === 0; + @assert imgdata4.data[3] === 0; + + var imgdata5 = ctx.getImageData(100, 10, 1, 1); + @assert imgdata5.data[0] === 0; + @assert imgdata5.data[1] === 0; + @assert imgdata5.data[2] === 0; + @assert imgdata5.data[3] === 0; + + var imgdata6 = ctx.getImageData(0, 10, 1, 1); + @assert imgdata6.data[0] === 0; + @assert imgdata6.data[1] === 136; + @assert imgdata6.data[2] === 255; + @assert imgdata6.data[3] === 255; + + var imgdata7 = ctx.getImageData(-10, 10, 20, 20); + @assert imgdata7.data[ 0*4+0] === 0; + @assert imgdata7.data[ 0*4+1] === 0; + @assert imgdata7.data[ 0*4+2] === 0; + @assert imgdata7.data[ 0*4+3] === 0; + @assert imgdata7.data[ 9*4+0] === 0; + @assert imgdata7.data[ 9*4+1] === 0; + @assert imgdata7.data[ 9*4+2] === 0; + @assert imgdata7.data[ 9*4+3] === 0; + @assert imgdata7.data[10*4+0] === 0; + @assert imgdata7.data[10*4+1] === 136; + @assert imgdata7.data[10*4+2] === 255; + @assert imgdata7.data[10*4+3] === 255; + @assert imgdata7.data[19*4+0] === 0; + @assert imgdata7.data[19*4+1] === 136; + @assert imgdata7.data[19*4+2] === 255; + @assert imgdata7.data[19*4+3] === 255; + @assert imgdata7.data[20*4+0] === 0; + @assert imgdata7.data[20*4+1] === 0; + @assert imgdata7.data[20*4+2] === 0; + @assert imgdata7.data[20*4+3] === 0; + +- name: 2d.imageData.get.source.negative + desc: getImageData() works with negative width and height, and returns top-to-bottom left-to-right + testing: + - 2d.imageData.get.basic + - 2d.pixelarray.order + code: | + ctx.fillStyle = '#000'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#fff'; + ctx.fillRect(20, 10, 60, 10); + + var imgdata1 = ctx.getImageData(85, 25, -10, -10); + @assert imgdata1.data[0] === 255; + @assert imgdata1.data[1] === 255; + @assert imgdata1.data[2] === 255; + @assert imgdata1.data[3] === 255; + @assert imgdata1.data[imgdata1.data.length-4+0] === 0; + @assert imgdata1.data[imgdata1.data.length-4+1] === 0; + @assert imgdata1.data[imgdata1.data.length-4+2] === 0; + @assert imgdata1.data[imgdata1.data.length-4+3] === 255; + + var imgdata2 = ctx.getImageData(0, 0, -1, -1); + @assert imgdata2.data[0] === 0; + @assert imgdata2.data[1] === 0; + @assert imgdata2.data[2] === 0; + @assert imgdata2.data[3] === 0; + +- name: 2d.imageData.get.source.size + desc: getImageData() returns bigger ImageData for bigger source rectangle + testing: + - 2d.imageData.get.basic + code: | + var imgdata1 = ctx.getImageData(0, 0, 10, 10); + var imgdata2 = ctx.getImageData(0, 0, 20, 20); + @assert imgdata2.width > imgdata1.width; + @assert imgdata2.height > imgdata1.height; + +- name: 2d.imageData.get.tiny + desc: getImageData() works for sizes smaller than one pixel + testing: + - 2d.imageData.one + code: | + var imgdata = ctx.getImageData(0, 0, 0.0001, 0.0001); + @assert imgdata.data.length === imgdata.width*imgdata.height*4; + @assert imgdata.width === 1; + @assert imgdata.height === 1; + +- name: 2d.imageData.get.nonpremul + desc: getImageData() returns non-premultiplied colours + testing: + - 2d.imageData.get.premul + code: | + ctx.fillStyle = 'rgba(255, 255, 255, 0.5)'; + ctx.fillRect(0, 0, 100, 50); + var imgdata = ctx.getImageData(10, 10, 10, 10); + @assert imgdata.data[0] > 200; + @assert imgdata.data[1] > 200; + @assert imgdata.data[2] > 200; + @assert imgdata.data[3] > 100; + @assert imgdata.data[3] < 200; + +- name: 2d.imageData.get.range + desc: getImageData() returns values in the range [0, 255] + testing: + - 2d.pixelarray.range + - 2d.pixelarray.retrieve + code: | + ctx.fillStyle = '#000'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#fff'; + ctx.fillRect(20, 10, 60, 10); + var imgdata1 = ctx.getImageData(10, 5, 1, 1); + @assert imgdata1.data[0] === 0; + var imgdata2 = ctx.getImageData(30, 15, 1, 1); + @assert imgdata2.data[0] === 255; + +- name: 2d.imageData.get.clamp + desc: getImageData() clamps colours to the range [0, 255] + testing: + - 2d.pixelarray.range + code: | + ctx.fillStyle = 'rgb(-100, -200, -300)'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = 'rgb(256, 300, 400)'; + ctx.fillRect(20, 10, 60, 10); + var imgdata1 = ctx.getImageData(10, 5, 1, 1); + @assert imgdata1.data[0] === 0; + @assert imgdata1.data[1] === 0; + @assert imgdata1.data[2] === 0; + var imgdata2 = ctx.getImageData(30, 15, 1, 1); + @assert imgdata2.data[0] === 255; + @assert imgdata2.data[1] === 255; + @assert imgdata2.data[2] === 255; + +- name: 2d.imageData.get.length + desc: getImageData() returns a correctly-sized Uint8ClampedArray + testing: + - 2d.pixelarray.length + code: | + var imgdata = ctx.getImageData(0, 0, 10, 10); + @assert imgdata.data.length === imgdata.width*imgdata.height*4; + +- name: 2d.imageData.get.order.cols + desc: getImageData() returns leftmost columns first + testing: + - 2d.pixelarray.order + code: | + ctx.fillStyle = '#fff'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#000'; + ctx.fillRect(0, 0, 2, 50); + var imgdata = ctx.getImageData(0, 0, 10, 10); + @assert imgdata.data[0] === 0; + @assert imgdata.data[Math.round(imgdata.width/2*4)] === 255; + @assert imgdata.data[Math.round((imgdata.height/2)*imgdata.width*4)] === 0; + +- name: 2d.imageData.get.order.rows + desc: getImageData() returns topmost rows first + testing: + - 2d.pixelarray.order + code: | + ctx.fillStyle = '#fff'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#000'; + ctx.fillRect(0, 0, 100, 2); + var imgdata = ctx.getImageData(0, 0, 10, 10); + @assert imgdata.data[0] === 0; + @assert imgdata.data[Math.floor(imgdata.width/2*4)] === 0; + @assert imgdata.data[(imgdata.height/2)*imgdata.width*4] === 255; + +- name: 2d.imageData.get.order.rgb + desc: getImageData() returns R then G then B + testing: + - 2d.pixelarray.order + - 2d.pixelarray.indexes + code: | + ctx.fillStyle = '#48c'; + ctx.fillRect(0, 0, 100, 50); + var imgdata = ctx.getImageData(0, 0, 10, 10); + @assert imgdata.data[0] === 0x44; + @assert imgdata.data[1] === 0x88; + @assert imgdata.data[2] === 0xCC; + @assert imgdata.data[3] === 255; + @assert imgdata.data[4] === 0x44; + @assert imgdata.data[5] === 0x88; + @assert imgdata.data[6] === 0xCC; + @assert imgdata.data[7] === 255; + +- name: 2d.imageData.get.order.alpha + desc: getImageData() returns A in the fourth component + testing: + - 2d.pixelarray.order + code: | + ctx.fillStyle = 'rgba(0, 0, 0, 0.5)'; + ctx.fillRect(0, 0, 100, 50); + var imgdata = ctx.getImageData(0, 0, 10, 10); + @assert imgdata.data[3] < 200; + @assert imgdata.data[3] > 100; + +- name: 2d.imageData.get.unaffected + desc: getImageData() is not affected by context state + testing: + - 2d.imageData.unaffected + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 50, 50) + ctx.fillStyle = '#f00'; + ctx.fillRect(50, 0, 50, 50) + ctx.save(); + ctx.translate(50, 0); + ctx.globalAlpha = 0.1; + ctx.globalCompositeOperation = 'destination-atop'; + ctx.shadowColor = '#f00'; + ctx.rect(0, 0, 5, 5); + ctx.clip(); + var imgdata = ctx.getImageData(0, 0, 50, 50); + ctx.restore(); + ctx.putImageData(imgdata, 50, 0); + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + expected: green + + +- name: 2d.imageData.object.properties + desc: ImageData objects have the right properties + testing: + - 2d.imageData.type + code: | + var imgdata = ctx.getImageData(0, 0, 10, 10); + @assert typeof(imgdata.width) === 'number'; + @assert typeof(imgdata.height) === 'number'; + @assert typeof(imgdata.data) === 'object'; + +- name: 2d.imageData.object.readonly + desc: ImageData objects properties are read-only + testing: + - 2d.imageData.type + code: | + var imgdata = ctx.getImageData(0, 0, 10, 10); + var w = imgdata.width; + var h = imgdata.height; + var d = imgdata.data; + imgdata.width = 123; + imgdata.height = 123; + imgdata.data = [100,100,100,100]; + @assert imgdata.width === w; + @assert imgdata.height === h; + @assert imgdata.data === d; + @assert imgdata.data[0] === 0; + @assert imgdata.data[1] === 0; + @assert imgdata.data[2] === 0; + @assert imgdata.data[3] === 0; + +- name: 2d.imageData.object.ctor + desc: ImageData does not have a usable constructor + testing: + - 2d.imageData.type + code: | + @assert window.ImageData !== undefined; + @assert throws TypeError new window.ImageData(1,1); + +- name: 2d.imageData.object.set + desc: ImageData.data can be modified + testing: + - 2d.pixelarray.modify + code: | + var imgdata = ctx.getImageData(0, 0, 10, 10); + imgdata.data[0] = 100; + @assert imgdata.data[0] === 100; + imgdata.data[0] = 200; + @assert imgdata.data[0] === 200; + +- name: 2d.imageData.object.undefined + desc: ImageData.data converts undefined to 0 + testing: + - 2d.pixelarray.modify + webidl: + - es-octet + code: | + var imgdata = ctx.getImageData(0, 0, 10, 10); + imgdata.data[0] = 100; + imgdata.data[0] = undefined; + @assert imgdata.data[0] === 0; + +- name: 2d.imageData.object.nan + desc: ImageData.data converts NaN to 0 + testing: + - 2d.pixelarray.modify + webidl: + - es-octet + code: | + var imgdata = ctx.getImageData(0, 0, 10, 10); + imgdata.data[0] = 100; + imgdata.data[0] = NaN; + @assert imgdata.data[0] === 0; + imgdata.data[0] = 100; + imgdata.data[0] = "cheese"; + @assert imgdata.data[0] === 0; + +- name: 2d.imageData.object.string + desc: ImageData.data converts strings to numbers with ToNumber + testing: + - 2d.pixelarray.modify + webidl: + - es-octet + code: | + var imgdata = ctx.getImageData(0, 0, 10, 10); + imgdata.data[0] = 100; + imgdata.data[0] = "110"; + @assert imgdata.data[0] === 110; + imgdata.data[0] = 100; + imgdata.data[0] = "0x78"; + @assert imgdata.data[0] === 120; + imgdata.data[0] = 100; + imgdata.data[0] = " +130e0 "; + @assert imgdata.data[0] === 130; + +- name: 2d.imageData.object.clamp + desc: ImageData.data clamps numbers to [0, 255] + testing: + - 2d.pixelarray.modify + webidl: + - es-octet + code: | + var imgdata = ctx.getImageData(0, 0, 10, 10); + + imgdata.data[0] = 100; + imgdata.data[0] = 300; + @assert imgdata.data[0] === 255; + imgdata.data[0] = 100; + imgdata.data[0] = -100; + @assert imgdata.data[0] === 0; + + imgdata.data[0] = 100; + imgdata.data[0] = 200+Math.pow(2, 32); + @assert imgdata.data[0] === 255; + imgdata.data[0] = 100; + imgdata.data[0] = -200-Math.pow(2, 32); + @assert imgdata.data[0] === 0; + + imgdata.data[0] = 100; + imgdata.data[0] = Math.pow(10, 39); + @assert imgdata.data[0] === 255; + imgdata.data[0] = 100; + imgdata.data[0] = -Math.pow(10, 39); + @assert imgdata.data[0] === 0; + + imgdata.data[0] = 100; + imgdata.data[0] = -Infinity; + @assert imgdata.data[0] === 0; + imgdata.data[0] = 100; + imgdata.data[0] = Infinity; + @assert imgdata.data[0] === 255; + +- name: 2d.imageData.object.round + desc: ImageData.data rounds numbers with round-to-zero + testing: + - 2d.pixelarray.modify + webidl: + - es-octet + code: | + var imgdata = ctx.getImageData(0, 0, 10, 10); + imgdata.data[0] = 0.499; + @assert imgdata.data[0] === 0; + imgdata.data[0] = 0.5; + @assert imgdata.data[0] === 0; + imgdata.data[0] = 0.501; + @assert imgdata.data[0] === 1; + imgdata.data[0] = 1.499; + @assert imgdata.data[0] === 1; + imgdata.data[0] = 1.5; + @assert imgdata.data[0] === 2; + imgdata.data[0] = 1.501; + @assert imgdata.data[0] === 2; + imgdata.data[0] = 2.5; + @assert imgdata.data[0] === 2; + imgdata.data[0] = 3.5; + @assert imgdata.data[0] === 4; + imgdata.data[0] = 252.5; + @assert imgdata.data[0] === 252; + imgdata.data[0] = 253.5; + @assert imgdata.data[0] === 254; + imgdata.data[0] = 254.5; + @assert imgdata.data[0] === 254; + imgdata.data[0] = 256.5; + @assert imgdata.data[0] === 255; + imgdata.data[0] = -0.5; + @assert imgdata.data[0] === 0; + imgdata.data[0] = -1.5; + @assert imgdata.data[0] === 0; + + + +- name: 2d.imageData.put.null + desc: putImageData() with null imagedata throws TypeError + testing: + - 2d.imageData.put.wrongtype + code: | + @assert throws TypeError ctx.putImageData(null, 0, 0); + +- name: 2d.imageData.put.nonfinite + desc: putImageData() throws TypeError if arguments are not finite + notes: *bindings + testing: + - 2d.imageData.put.nonfinite + code: | + var imgdata = ctx.getImageData(0, 0, 10, 10); + @nonfinite @assert throws TypeError ctx.putImageData(<imgdata>, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>); + @nonfinite @assert throws TypeError ctx.putImageData(<imgdata>, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>); + +- name: 2d.imageData.put.basic + desc: putImageData() puts image data from getImageData() onto the canvas + testing: + - 2d.imageData.put.normal + - 2d.imageData.put.3arg + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50) + var imgdata = ctx.getImageData(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50) + ctx.putImageData(imgdata, 0, 0); + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.imageData.put.created + desc: putImageData() puts image data from createImageData() onto the canvas + testing: + - 2d.imageData.put.normal + code: | + var imgdata = ctx.createImageData(100, 50); + for (var i = 0; i < imgdata.data.length; i += 4) { + imgdata.data[i] = 0; + imgdata.data[i+1] = 255; + imgdata.data[i+2] = 0; + imgdata.data[i+3] = 255; + } + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50) + ctx.putImageData(imgdata, 0, 0); + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.imageData.put.wrongtype + desc: putImageData() does not accept non-ImageData objects + testing: + - 2d.imageData.put.wrongtype + code: | + var imgdata = { width: 1, height: 1, data: [255, 0, 0, 255] }; + @assert throws TypeError ctx.putImageData(imgdata, 0, 0); + @assert throws TypeError ctx.putImageData("cheese", 0, 0); + @assert throws TypeError ctx.putImageData(42, 0, 0); + expected: green + +- name: 2d.imageData.put.cross + desc: putImageData() accepts image data got from a different canvas + testing: + - 2d.imageData.put.normal + code: | + var canvas2 = document.createElement('canvas'); + var ctx2 = canvas2.getContext('2d'); + ctx2.fillStyle = '#0f0'; + ctx2.fillRect(0, 0, 100, 50) + var imgdata = ctx2.getImageData(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50) + ctx.putImageData(imgdata, 0, 0); + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.imageData.put.alpha + desc: putImageData() puts non-solid image data correctly + testing: + - 2d.imageData.put.normal + code: | + ctx.fillStyle = 'rgba(0, 255, 0, 0.25)'; + ctx.fillRect(0, 0, 100, 50) + var imgdata = ctx.getImageData(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50) + ctx.putImageData(imgdata, 0, 0); + @assert pixel 50,25 ==~ 0,255,0,64; + expected: | + size 100 50 + cr.set_source_rgba(0, 1, 0, 0.25) + cr.rectangle(0, 0, 100, 50) + cr.fill() + +- name: 2d.imageData.put.modified + desc: putImageData() puts modified image data correctly + testing: + - 2d.imageData.put.normal + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50) + ctx.fillStyle = '#f00'; + ctx.fillRect(45, 20, 10, 10) + var imgdata = ctx.getImageData(45, 20, 10, 10); + for (var i = 0, len = imgdata.width*imgdata.height*4; i < len; i += 4) + { + imgdata.data[i] = 0; + imgdata.data[i+1] = 255; + } + ctx.putImageData(imgdata, 45, 20); + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.imageData.put.dirty.zero + desc: putImageData() with zero-sized dirty rectangle puts nothing + testing: + - 2d.imageData.put.normal + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50) + var imgdata = ctx.getImageData(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50) + ctx.putImageData(imgdata, 0, 0, 0, 0, 0, 0); + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.imageData.put.dirty.rect1 + desc: putImageData() only modifies areas inside the dirty rectangle, using width and height + testing: + - 2d.imageData.put.normal + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50) + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 20, 20) + + var imgdata = ctx.getImageData(0, 0, 100, 50); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50) + ctx.fillStyle = '#f00'; + ctx.fillRect(40, 20, 20, 20) + ctx.putImageData(imgdata, 40, 20, 0, 0, 20, 20); + + @assert pixel 50,25 ==~ 0,255,0,255; + @assert pixel 35,25 ==~ 0,255,0,255; + @assert pixel 65,25 ==~ 0,255,0,255; + @assert pixel 50,15 ==~ 0,255,0,255; + @assert pixel 50,45 ==~ 0,255,0,255; + expected: green + +- name: 2d.imageData.put.dirty.rect2 + desc: putImageData() only modifies areas inside the dirty rectangle, using x and y + testing: + - 2d.imageData.put.normal + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50) + ctx.fillStyle = '#0f0'; + ctx.fillRect(60, 30, 20, 20) + + var imgdata = ctx.getImageData(0, 0, 100, 50); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50) + ctx.fillStyle = '#f00'; + ctx.fillRect(40, 20, 20, 20) + ctx.putImageData(imgdata, -20, -10, 60, 30, 20, 20); + + @assert pixel 50,25 ==~ 0,255,0,255; + @assert pixel 35,25 ==~ 0,255,0,255; + @assert pixel 65,25 ==~ 0,255,0,255; + @assert pixel 50,15 ==~ 0,255,0,255; + @assert pixel 50,45 ==~ 0,255,0,255; + expected: green + +- name: 2d.imageData.put.dirty.negative + desc: putImageData() handles negative-sized dirty rectangles correctly + testing: + - 2d.imageData.put.normal + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50) + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 20, 20) + + var imgdata = ctx.getImageData(0, 0, 100, 50); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50) + ctx.fillStyle = '#f00'; + ctx.fillRect(40, 20, 20, 20) + ctx.putImageData(imgdata, 40, 20, 20, 20, -20, -20); + + @assert pixel 50,25 ==~ 0,255,0,255; + @assert pixel 35,25 ==~ 0,255,0,255; + @assert pixel 65,25 ==~ 0,255,0,255; + @assert pixel 50,15 ==~ 0,255,0,255; + @assert pixel 50,45 ==~ 0,255,0,255; + expected: green + +- name: 2d.imageData.put.dirty.outside + desc: putImageData() handles dirty rectangles outside the canvas correctly + testing: + - 2d.imageData.put.normal + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50) + + var imgdata = ctx.getImageData(0, 0, 100, 50); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50) + + ctx.putImageData(imgdata, 100, 20, 20, 20, -20, -20); + ctx.putImageData(imgdata, 200, 200, 0, 0, 100, 50); + ctx.putImageData(imgdata, 40, 20, -30, -20, 30, 20); + ctx.putImageData(imgdata, -30, 20, 0, 0, 30, 20); + + @assert pixel 50,25 ==~ 0,255,0,255; + @assert pixel 98,15 ==~ 0,255,0,255; + @assert pixel 98,25 ==~ 0,255,0,255; + @assert pixel 98,45 ==~ 0,255,0,255; + @assert pixel 1,5 ==~ 0,255,0,255; + @assert pixel 1,25 ==~ 0,255,0,255; + @assert pixel 1,45 ==~ 0,255,0,255; + expected: green + +- name: 2d.imageData.put.unchanged + desc: putImageData(getImageData(...), ...) has no effect + testing: + - 2d.imageData.unchanged + code: | + var i = 0; + for (var y = 0; y < 16; ++y) { + for (var x = 0; x < 16; ++x, ++i) { + ctx.fillStyle = 'rgba(' + i + ',' + (Math.floor(i*1.5) % 256) + ',' + (Math.floor(i*23.3) % 256) + ',' + (i/256) + ')'; + ctx.fillRect(x, y, 1, 1); + } + } + var imgdata1 = ctx.getImageData(0.1, 0.2, 15.8, 15.9); + var olddata = []; + for (var i = 0; i < imgdata1.data.length; ++i) + olddata[i] = imgdata1.data[i]; + + ctx.putImageData(imgdata1, 0.1, 0.2); + + var imgdata2 = ctx.getImageData(0.1, 0.2, 15.8, 15.9); + for (var i = 0; i < imgdata2.data.length; ++i) { + @assert olddata[i] === imgdata2.data[i]; + } + +- name: 2d.imageData.put.unaffected + desc: putImageData() is not affected by context state + testing: + - 2d.imageData.unaffected + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50) + var imgdata = ctx.getImageData(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50) + ctx.globalAlpha = 0.1; + ctx.globalCompositeOperation = 'destination-atop'; + ctx.shadowColor = '#f00'; + ctx.shadowBlur = 1; + ctx.translate(100, 50); + ctx.scale(0.1, 0.1); + ctx.putImageData(imgdata, 0, 0); + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.imageData.put.clip + desc: putImageData() is not affected by clipping regions + testing: + - 2d.imageData.unaffected + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50) + var imgdata = ctx.getImageData(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50) + ctx.beginPath(); + ctx.rect(0, 0, 50, 50); + ctx.clip(); + ctx.putImageData(imgdata, 0, 0); + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + expected: green + +- name: 2d.imageData.put.path + desc: putImageData() does not affect the current path + testing: + - 2d.imageData.put.normal + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50) + ctx.rect(0, 0, 100, 50); + var imgdata = ctx.getImageData(0, 0, 100, 50); + ctx.putImageData(imgdata, 0, 0); + ctx.fillStyle = '#0f0'; + ctx.fill(); + @assert pixel 50,25 ==~ 0,255,0,255; + expected: green diff --git a/testing/web-platform/tests/2dcontext/tools/tests2dtext.yaml b/testing/web-platform/tests/2dcontext/tools/tests2dtext.yaml new file mode 100644 index 000000000..96c65265c --- /dev/null +++ b/testing/web-platform/tests/2dcontext/tools/tests2dtext.yaml @@ -0,0 +1,1013 @@ +# Copyright (c) 2010 Philip Taylor +# Released under the BSD license and W3C Test Suite License: see LICENSE.txt + +- name: 2d.text.font.parse.basic + testing: + - 2d.text.font.parse + - 2d.text.font.get + code: | + ctx.font = '20px serif'; + @assert ctx.font === '20px serif'; + + ctx.font = '20PX SERIF'; + @assert ctx.font === '20px serif'; @moz-todo + +- name: 2d.text.font.parse.complex + testing: + - 2d.text.font.parse + - 2d.text.font.get + - 2d.text.font.lineheight + code: | + ctx.font = 'small-caps italic 400 12px/2 Unknown Font, sans-serif'; + @assert ctx.font === 'italic small-caps 12px "Unknown Font", sans-serif'; @moz-todo + + # TODO: + # 2d.text.font.parse.size.absolute + # xx-small x-small small medium large x-large xx-large + # 2d.text.font.parse.size.relative + # smaller larger + # 2d.text.font.parse.size.length.relative + # em ex px + # 2d.text.font.parse.size.length.absolute + # in cm mm pt pc + +- name: 2d.text.font.parse.size.percentage + testing: + - 2d.text.font.parse + - 2d.text.font.get + - 2d.text.font.fontsize + - 2d.text.font.size + canvas: 'style="font-size: 144px" width="100" height="50"' + code: | + ctx.font = '50% serif'; + @assert ctx.font === '72px serif'; @moz-todo + canvas.setAttribute('style', 'font-size: 100px'); + @assert ctx.font === '72px serif'; @moz-todo + +- name: 2d.text.font.parse.size.percentage.default + testing: + - 2d.text.font.undefined + code: | + var canvas2 = document.createElement('canvas'); + var ctx2 = canvas2.getContext('2d'); + ctx2.font = '1000% serif'; + @assert ctx2.font === '100px serif'; @moz-todo + +- name: 2d.text.font.parse.system + desc: System fonts must be computed to explicit values + testing: + - 2d.text.font.parse + - 2d.text.font.get + - 2d.text.font.systemfonts + code: | + ctx.font = 'message-box'; + @assert ctx.font !== 'message-box'; + +- name: 2d.text.font.parse.invalid + testing: + - 2d.text.font.invalid + code: | + ctx.font = '20px serif'; + @assert ctx.font === '20px serif'; + + ctx.font = '20px serif'; + ctx.font = 'bogus'; + @assert ctx.font === '20px serif'; + + ctx.font = '20px serif'; + ctx.font = 'inherit'; + @assert ctx.font === '20px serif'; + + ctx.font = '20px serif'; + ctx.font = '10px {bogus}'; + @assert ctx.font === '20px serif'; + + ctx.font = '20px serif'; + ctx.font = '10px initial'; + @assert ctx.font === '20px serif'; @moz-todo + + ctx.font = '20px serif'; + ctx.font = '10px default'; + @assert ctx.font === '20px serif'; @moz-todo + + ctx.font = '20px serif'; + ctx.font = '10px inherit'; + @assert ctx.font === '20px serif'; + + ctx.font = '20px serif'; + ctx.font = '1em serif; background: green; margin: 10px'; + @assert ctx.font === '20px serif'; + +- name: 2d.text.font.default + testing: + - 2d.text.font.default + code: | + @assert ctx.font === '10px sans-serif'; + + + +- name: 2d.text.align.valid + testing: + - 2d.text.align.get + - 2d.text.align.set + code: | + ctx.textAlign = 'start'; + @assert ctx.textAlign === 'start'; + + ctx.textAlign = 'end'; + @assert ctx.textAlign === 'end'; + + ctx.textAlign = 'left'; + @assert ctx.textAlign === 'left'; + + ctx.textAlign = 'right'; + @assert ctx.textAlign === 'right'; + + ctx.textAlign = 'center'; + @assert ctx.textAlign === 'center'; + +- name: 2d.text.align.invalid + testing: + - 2d.text.align.invalid + code: | + ctx.textAlign = 'start'; + ctx.textAlign = 'bogus'; + @assert ctx.textAlign === 'start'; + + ctx.textAlign = 'start'; + ctx.textAlign = 'END'; + @assert ctx.textAlign === 'start'; + + ctx.textAlign = 'start'; + ctx.textAlign = 'end '; + @assert ctx.textAlign === 'start'; + + ctx.textAlign = 'start'; + ctx.textAlign = 'end\0'; + @assert ctx.textAlign === 'start'; + +- name: 2d.text.align.default + testing: + - 2d.text.align.default + code: | + @assert ctx.textAlign === 'start'; + + +- name: 2d.text.baseline.valid + testing: + - 2d.text.baseline.get + - 2d.text.baseline.set + code: | + ctx.textBaseline = 'top'; + @assert ctx.textBaseline === 'top'; + + ctx.textBaseline = 'hanging'; + @assert ctx.textBaseline === 'hanging'; + + ctx.textBaseline = 'middle'; + @assert ctx.textBaseline === 'middle'; + + ctx.textBaseline = 'alphabetic'; + @assert ctx.textBaseline === 'alphabetic'; + + ctx.textBaseline = 'ideographic'; + @assert ctx.textBaseline === 'ideographic'; + + ctx.textBaseline = 'bottom'; + @assert ctx.textBaseline === 'bottom'; + +- name: 2d.text.baseline.invalid + testing: + - 2d.text.baseline.invalid + code: | + ctx.textBaseline = 'top'; + ctx.textBaseline = 'bogus'; + @assert ctx.textBaseline === 'top'; + + ctx.textBaseline = 'top'; + ctx.textBaseline = 'MIDDLE'; + @assert ctx.textBaseline === 'top'; + + ctx.textBaseline = 'top'; + ctx.textBaseline = 'middle '; + @assert ctx.textBaseline === 'top'; + + ctx.textBaseline = 'top'; + ctx.textBaseline = 'middle\0'; + @assert ctx.textBaseline === 'top'; + +- name: 2d.text.baseline.default + testing: + - 2d.text.baseline.default + code: | + @assert ctx.textBaseline === 'alphabetic'; + + + + + +- name: 2d.text.draw.fill.basic + desc: fillText draws filled text + manual: + testing: + - 2d.text.draw + - 2d.text.draw.fill + code: | + ctx.fillStyle = '#000'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.strokeStyle = '#f00'; + ctx.font = '35px Arial, sans-serif'; + ctx.fillText('PASS', 5, 35); + expected: &passfill | + size 100 50 + cr.set_source_rgb(0, 0, 0) + cr.rectangle(0, 0, 100, 50) + cr.fill() + cr.set_source_rgb(0, 1, 0) + cr.select_font_face("Arial") + cr.set_font_size(35) + cr.translate(5, 35) + cr.text_path("PASS") + cr.fill() + +- name: 2d.text.draw.fill.unaffected + desc: fillText does not start a new path or subpath + testing: + - 2d.text.draw.fill + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.moveTo(0, 0); + ctx.lineTo(100, 0); + + ctx.font = '35px Arial, sans-serif'; + ctx.fillText('FAIL', 5, 35); + + ctx.lineTo(100, 50); + ctx.lineTo(0, 50); + ctx.fillStyle = '#0f0'; + ctx.fill(); + + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 5,45 == 0,255,0,255; + expected: green + +- name: 2d.text.draw.fill.rtl + desc: fillText respects Right-To-Left Override characters + manual: + testing: + - 2d.text.draw + code: | + ctx.fillStyle = '#000'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.strokeStyle = '#f00'; + ctx.font = '35px Arial, sans-serif'; + ctx.fillText('\u202eFAIL \xa0 \xa0 SSAP', 5, 35); + expected: *passfill + +- name: 2d.text.draw.fill.maxWidth.large + desc: fillText handles maxWidth correctly + manual: + testing: + - 2d.text.draw.maxwidth + code: | + ctx.fillStyle = '#000'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.font = '35px Arial, sans-serif'; + ctx.fillText('PASS', 5, 35, 200); + expected: *passfill + +- name: 2d.text.draw.fill.maxWidth.small + desc: fillText handles maxWidth correctly + testing: + - 2d.text.draw.maxwidth + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.font = '35px Arial, sans-serif'; + ctx.fillText('fail fail fail fail fail', -100, 35, 90); + _assertGreen(ctx, 100, 50); + expected: green + +- name: 2d.text.draw.fill.maxWidth.zero + desc: fillText handles maxWidth correctly + testing: + - 2d.text.draw.maxwidth + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.font = '35px Arial, sans-serif'; + ctx.fillText('fail fail fail fail fail', 5, 35, 0); + _assertGreen(ctx, 100, 50); + expected: green + +- name: 2d.text.draw.fill.maxWidth.negative + desc: fillText handles maxWidth correctly + testing: + - 2d.text.draw.maxwidth + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.font = '35px Arial, sans-serif'; + ctx.fillText('fail fail fail fail fail', 5, 35, -1); + _assertGreen(ctx, 100, 50); + expected: green + +- name: 2d.text.draw.fill.maxWidth.NaN + desc: fillText handles maxWidth correctly + testing: + - 2d.text.draw.maxwidth + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.font = '35px Arial, sans-serif'; + ctx.fillText('fail fail fail fail fail', 5, 35, NaN); + _assertGreen(ctx, 100, 50); + expected: green + +- name: 2d.text.draw.stroke.basic + desc: strokeText draws stroked text + manual: + testing: + - 2d.text.draw + - 2d.text.draw.stroke + code: | + ctx.fillStyle = '#000'; + ctx.fillRect(0, 0, 100, 50); + ctx.strokeStyle = '#0f0'; + ctx.fillStyle = '#f00'; + ctx.lineWidth = 1; + ctx.font = '35px Arial, sans-serif'; + ctx.strokeText('PASS', 5, 35); + expected: | + size 100 50 + cr.set_source_rgb(0, 0, 0) + cr.rectangle(0, 0, 100, 50) + cr.fill() + cr.set_source_rgb(0, 1, 0) + cr.select_font_face("Arial") + cr.set_font_size(35) + cr.set_line_width(1) + cr.translate(5, 35) + cr.text_path("PASS") + cr.stroke() + +- name: 2d.text.draw.stroke.unaffected + desc: strokeText does not start a new path or subpath + testing: + - 2d.text.draw.stroke + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + + ctx.moveTo(0, 0); + ctx.lineTo(100, 0); + + ctx.font = '35px Arial, sans-serif'; + ctx.strokeStyle = '#f00'; + ctx.strokeText('FAIL', 5, 35); + + ctx.lineTo(100, 50); + ctx.lineTo(0, 50); + ctx.fillStyle = '#0f0'; + ctx.fill(); + + @assert pixel 50,25 == 0,255,0,255; + @assert pixel 5,45 == 0,255,0,255; + expected: green + +- name: 2d.text.draw.kern.consistent + desc: Stroked and filled text should have exactly the same kerning so it overlaps + manual: + testing: + - 2d.text.draw + code: | + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.strokeStyle = '#0f0'; + ctx.lineWidth = 3; + ctx.font = '20px Arial, sans-serif'; + ctx.fillText('VAVAVAVAVAVAVA', -50, 25); + ctx.fillText('ToToToToToToTo', -50, 45); + ctx.strokeText('VAVAVAVAVAVAVA', -50, 25); + ctx.strokeText('ToToToToToToTo', -50, 45); + expected: green + +# CanvasTest is: +# A = (0, 0) to (1em, 0.75em) (above baseline) +# B = (0, 0) to (1em, -0.25em) (below baseline) +# C = (0, -0.25em) to (1em, 0.75em) (the em square) plus some Xs above and below +# D = (0, -0.25em) to (1em, 0.75em) (the em square) plus some Xs left and right +# E = (0, -0.25em) to (1em, 0.75em) (the em square) +# space = empty, 1em wide +# +# At 50px, "E" will fill the canvas vertically +# At 67px, "A" will fill the canvas vertically +# +# Ideographic baseline is 0.125em above alphabetic +# Mathematical baseline is 0.375em above alphabetic +# Hanging baseline is 0.500em above alphabetic + +# WebKit doesn't block onload on font loads, so we try to make it a bit more reliable +# by waiting with setTimeout after load before drawing + +- name: 2d.text.draw.fill.maxWidth.fontface + desc: fillText works on @font-face fonts + testing: + - 2d.text.draw.maxwidth + fonts: + - CanvasTest + code: | + ctx.font = '50px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#f00'; + ctx.fillText('EEEE', -50, 37.5, 40); + @assert pixel 5,5 ==~ 0,255,0,255; + @assert pixel 95,5 ==~ 0,255,0,255; + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + }), 500); + expected: green + +- name: 2d.text.draw.fill.maxWidth.bound + desc: fillText handles maxWidth based on line size, not bounding box size + testing: + - 2d.text.draw.maxwidth + fonts: + - CanvasTest + code: | + ctx.font = '50px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.fillText('DD', 0, 37.5, 100); + @assert pixel 5,5 ==~ 0,255,0,255; + @assert pixel 95,5 ==~ 0,255,0,255; + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + }), 500); + expected: green + +- name: 2d.text.draw.fontface + testing: + - 2d.text.font.fontface + fonts: + - CanvasTest + code: | + ctx.font = '67px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.fillText('AA', 0, 50); + @assert pixel 5,5 ==~ 0,255,0,255; + @assert pixel 95,5 ==~ 0,255,0,255; + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + }), 500); + expected: green + +- name: 2d.text.draw.fontface.repeat + desc: Draw with the font immediately, then wait a bit until and draw again. (This crashes some version of WebKit.) + testing: + - 2d.text.font.fontface + fonts: + - CanvasTest + fonthack: 0 + code: | + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.font = '67px CanvasTest'; + ctx.fillStyle = '#0f0'; + ctx.fillText('AA', 0, 50); + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillText('AA', 0, 50); + @assert pixel 5,5 ==~ 0,255,0,255; + @assert pixel 95,5 ==~ 0,255,0,255; + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + }), 500); + expected: green + +- name: 2d.text.draw.fontface.notinpage + desc: "@font-face fonts should work even if they are not used in the page" + testing: + - 2d.text.font.fontface + fonts: + - CanvasTest + fonthack: 0 + code: | + ctx.font = '67px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.fillText('AA', 0, 50); + @assert pixel 5,5 ==~ 0,255,0,255; @moz-todo + @assert pixel 95,5 ==~ 0,255,0,255; @moz-todo + @assert pixel 25,25 ==~ 0,255,0,255; @moz-todo + @assert pixel 75,25 ==~ 0,255,0,255; @moz-todo + }), 500); + expected: green + +- name: 2d.text.draw.baseline.top + desc: textBaseline top is the top of the em square (not the bounding box) + testing: + - 2d.text.baseline.top + fonts: + - CanvasTest + code: | + ctx.font = '50px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.textBaseline = 'top'; + ctx.fillText('CC', 0, 0); + @assert pixel 5,5 ==~ 0,255,0,255; + @assert pixel 95,5 ==~ 0,255,0,255; + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + @assert pixel 5,45 ==~ 0,255,0,255; + @assert pixel 95,45 ==~ 0,255,0,255; + }), 500); + expected: green + +- name: 2d.text.draw.baseline.bottom + desc: textBaseline bottom is the bottom of the em square (not the bounding box) + testing: + - 2d.text.baseline.bottom + fonts: + - CanvasTest + code: | + ctx.font = '50px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.textBaseline = 'bottom'; + ctx.fillText('CC', 0, 50); + @assert pixel 5,5 ==~ 0,255,0,255; + @assert pixel 95,5 ==~ 0,255,0,255; + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + @assert pixel 5,45 ==~ 0,255,0,255; + @assert pixel 95,45 ==~ 0,255,0,255; + }), 500); + expected: green + +- name: 2d.text.draw.baseline.middle + desc: textBaseline middle is the middle of the em square (not the bounding box) + testing: + - 2d.text.baseline.middle + fonts: + - CanvasTest + code: | + ctx.font = '50px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.textBaseline = 'middle'; + ctx.fillText('CC', 0, 25); + @assert pixel 5,5 ==~ 0,255,0,255; + @assert pixel 95,5 ==~ 0,255,0,255; + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + @assert pixel 5,45 ==~ 0,255,0,255; + @assert pixel 95,45 ==~ 0,255,0,255; + }), 500); + expected: green + +- name: 2d.text.draw.baseline.alphabetic + testing: + - 2d.text.baseline.alphabetic + fonts: + - CanvasTest + code: | + ctx.font = '50px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.textBaseline = 'alphabetic'; + ctx.fillText('CC', 0, 37.5); + @assert pixel 5,5 ==~ 0,255,0,255; + @assert pixel 95,5 ==~ 0,255,0,255; + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + @assert pixel 5,45 ==~ 0,255,0,255; + @assert pixel 95,45 ==~ 0,255,0,255; + }), 500); + expected: green + +- name: 2d.text.draw.baseline.ideographic + testing: + - 2d.text.baseline.ideographic + fonts: + - CanvasTest + code: | + ctx.font = '50px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.textBaseline = 'ideographic'; + ctx.fillText('CC', 0, 31.25); + @assert pixel 5,5 ==~ 0,255,0,255; + @assert pixel 95,5 ==~ 0,255,0,255; + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + @assert pixel 5,45 ==~ 0,255,0,255; @moz-todo + @assert pixel 95,45 ==~ 0,255,0,255; @moz-todo + }), 500); + expected: green + +- name: 2d.text.draw.baseline.hanging + testing: + - 2d.text.baseline.hanging + fonts: + - CanvasTest + code: | + ctx.font = '50px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.textBaseline = 'hanging'; + ctx.fillText('CC', 0, 12.5); + @assert pixel 5,5 ==~ 0,255,0,255; @moz-todo + @assert pixel 95,5 ==~ 0,255,0,255; @moz-todo + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + @assert pixel 5,45 ==~ 0,255,0,255; + @assert pixel 95,45 ==~ 0,255,0,255; + }), 500); + expected: green + +- name: 2d.text.draw.align.left + desc: textAlign left is the left of the first em square (not the bounding box) + testing: + - 2d.text.align.left + fonts: + - CanvasTest + code: | + ctx.font = '50px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.textAlign = 'left'; + ctx.fillText('DD', 0, 37.5); + @assert pixel 5,5 ==~ 0,255,0,255; + @assert pixel 95,5 ==~ 0,255,0,255; + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + @assert pixel 5,45 ==~ 0,255,0,255; + @assert pixel 95,45 ==~ 0,255,0,255; + }), 500); + expected: green + +- name: 2d.text.draw.align.right + desc: textAlign right is the right of the last em square (not the bounding box) + testing: + - 2d.text.align.right + fonts: + - CanvasTest + code: | + ctx.font = '50px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.textAlign = 'right'; + ctx.fillText('DD', 100, 37.5); + @assert pixel 5,5 ==~ 0,255,0,255; + @assert pixel 95,5 ==~ 0,255,0,255; + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + @assert pixel 5,45 ==~ 0,255,0,255; + @assert pixel 95,45 ==~ 0,255,0,255; + }), 500); + expected: green + +- name: 2d.text.draw.align.start.ltr + desc: textAlign start with ltr is the left edge + testing: + - 2d.text.align.left + fonts: + - CanvasTest + canvas: width="100" height="50" dir="ltr" + code: | + ctx.font = '50px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.textAlign = 'start'; + ctx.fillText('DD', 0, 37.5); + @assert pixel 5,5 ==~ 0,255,0,255; + @assert pixel 95,5 ==~ 0,255,0,255; + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + @assert pixel 5,45 ==~ 0,255,0,255; + @assert pixel 95,45 ==~ 0,255,0,255; + }), 500); + expected: green + +- name: 2d.text.draw.align.start.rtl + desc: textAlign start with rtl is the right edge + testing: + - 2d.text.align.right + - 2d.text.draw.direction + fonts: + - CanvasTest + canvas: width="100" height="50" dir="rtl" + code: | + ctx.font = '50px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.textAlign = 'start'; + ctx.fillText('DD', 100, 37.5); + @assert pixel 5,5 ==~ 0,255,0,255; + @assert pixel 95,5 ==~ 0,255,0,255; + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + @assert pixel 5,45 ==~ 0,255,0,255; + @assert pixel 95,45 ==~ 0,255,0,255; + }), 500); + expected: green + +- name: 2d.text.draw.align.end.ltr + desc: textAlign end with ltr is the right edge + testing: + - 2d.text.align.right + fonts: + - CanvasTest + canvas: width="100" height="50" dir="ltr" + code: | + ctx.font = '50px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.textAlign = 'end'; + ctx.fillText('DD', 100, 37.5); + @assert pixel 5,5 ==~ 0,255,0,255; + @assert pixel 95,5 ==~ 0,255,0,255; + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + @assert pixel 5,45 ==~ 0,255,0,255; + @assert pixel 95,45 ==~ 0,255,0,255; + }), 500); + expected: green + +- name: 2d.text.draw.align.end.rtl + desc: textAlign end with rtl is the left edge + testing: + - 2d.text.align.left + - 2d.text.draw.direction + fonts: + - CanvasTest + canvas: width="100" height="50" dir="rtl" + code: | + ctx.font = '50px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.textAlign = 'end'; + ctx.fillText('DD', 0, 37.5); + @assert pixel 5,5 ==~ 0,255,0,255; + @assert pixel 95,5 ==~ 0,255,0,255; + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + @assert pixel 5,45 ==~ 0,255,0,255; + @assert pixel 95,45 ==~ 0,255,0,255; + }), 500); + expected: green + +- name: 2d.text.draw.align.center + desc: textAlign center is the center of the em squares (not the bounding box) + testing: + - 2d.text.align.center + fonts: + - CanvasTest + code: | + ctx.font = '50px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.textAlign = 'center'; + ctx.fillText('DD', 50, 37.5); + @assert pixel 5,5 ==~ 0,255,0,255; + @assert pixel 95,5 ==~ 0,255,0,255; + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + @assert pixel 5,45 ==~ 0,255,0,255; + @assert pixel 95,45 ==~ 0,255,0,255; + }), 500); + expected: green + + +- name: 2d.text.draw.space.basic + desc: U+0020 is rendered the correct size (1em wide) + testing: + - 2d.text.draw.spaces + fonts: + - CanvasTest + code: | + ctx.font = '50px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.fillText('E EE', -100, 37.5); + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + }), 500); + expected: green + +- name: 2d.text.draw.space.collapse.space + desc: Space characters are converted to U+0020, and collapsed (per CSS) + testing: + - 2d.text.draw.spaces + fonts: + - CanvasTest + code: | + ctx.font = '50px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.fillText('E EE', -100, 37.5); + @assert pixel 25,25 ==~ 0,255,0,255; @moz-todo + @assert pixel 75,25 ==~ 0,255,0,255; + }), 500); + expected: green + +- name: 2d.text.draw.space.collapse.other + desc: Space characters are converted to U+0020, and collapsed (per CSS) + testing: + - 2d.text.draw.spaces + fonts: + - CanvasTest + code: | + ctx.font = '50px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.fillText('E \x09\x0a\x0c\x0d \x09\x0a\x0c\x0dEE', -100, 37.5); + @assert pixel 25,25 ==~ 0,255,0,255; @moz-todo + @assert pixel 75,25 ==~ 0,255,0,255; @moz-todo + }), 500); + expected: green + +- name: 2d.text.draw.space.collapse.nonspace + desc: Non-space characters are not converted to U+0020 and collapsed + testing: + - 2d.text.draw.spaces + fonts: + - CanvasTest + code: | + ctx.font = '50px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.fillText('E\x0b EE', -150, 37.5); + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; + }), 500); + expected: green + +- name: 2d.text.draw.space.collapse.start + desc: Space characters at the start of a line are collapsed (per CSS) + testing: + - 2d.text.draw.spaces + fonts: + - CanvasTest + code: | + ctx.font = '50px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.fillText(' EE', 0, 37.5); + @assert pixel 25,25 ==~ 0,255,0,255; @moz-todo + @assert pixel 75,25 ==~ 0,255,0,255; + }), 500); + expected: green + +- name: 2d.text.draw.space.collapse.end + desc: Space characters at the end of a line are collapsed (per CSS) + testing: + - 2d.text.draw.spaces + fonts: + - CanvasTest + code: | + ctx.font = '50px CanvasTest'; + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.fillStyle = '#f00'; + ctx.fillRect(0, 0, 100, 50); + ctx.fillStyle = '#0f0'; + ctx.textAlign = 'right'; + ctx.fillText('EE ', 100, 37.5); + @assert pixel 25,25 ==~ 0,255,0,255; + @assert pixel 75,25 ==~ 0,255,0,255; @moz-todo + }), 500); + expected: green + + + + +- name: 2d.text.measure.width.basic + testing: + - 2d.text.measure + fonts: + - CanvasTest + code: | + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.font = '50px CanvasTest'; + @assert ctx.measureText('A').width === 50; + @assert ctx.measureText('AA').width === 100; + @assert ctx.measureText('ABCD').width === 200; + + ctx.font = '100px CanvasTest'; + @assert ctx.measureText('A').width === 100; + }), 500); + +- name: 2d.text.measure.width.empty + desc: The empty string has zero width + testing: + - 2d.text.measure + fonts: + - CanvasTest + code: | + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.font = '50px CanvasTest'; + @assert ctx.measureText("").width === 0; + }), 500); + +- name: 2d.text.measure.width.space + desc: Space characters are converted to U+0020 and collapsed (per CSS) + testing: + - 2d.text.measure.spaces + fonts: + - CanvasTest + code: | + deferTest(); + setTimeout(t.step_func_done(function () { + ctx.font = '50px CanvasTest'; + @assert ctx.measureText('A B').width === 150; + @assert ctx.measureText('A B').width === 150; @moz-todo + @assert ctx.measureText('A \x09\x0a\x0c\x0d \x09\x0a\x0c\x0dB').width === 150; @moz-todo + @assert ctx.measureText('A \x0b B').width >= 200; + + @assert ctx.measureText(' AB').width === 100; @moz-todo + @assert ctx.measureText('AB ').width === 100; @moz-todo + }), 500); + +# TODO: shadows, alpha, composite, clip |