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author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
tree | 10027f336435511475e392454359edea8e25895d /modules/freetype2/docs/reference/ft2-quick_advance.html | |
parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
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diff --git a/modules/freetype2/docs/reference/ft2-quick_advance.html b/modules/freetype2/docs/reference/ft2-quick_advance.html new file mode 100644 index 000000000..3222485af --- /dev/null +++ b/modules/freetype2/docs/reference/ft2-quick_advance.html @@ -0,0 +1,224 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" +"http://www.w3.org/TR/html4/loose.dtd"> +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> +<title>FreeType-2.7.1 API Reference</title> +<style type="text/css"> + a:link { color: #0000EF; } + a:visited { color: #51188E; } + a:hover { color: #FF0000; } + + body { font-family: Verdana, Geneva, Arial, Helvetica, serif; + color: #000000; + background: #FFFFFF; + width: 87%; + margin: auto; } + + div.section { width: 75%; + margin: auto; } + div.section hr { margin: 4ex 0 1ex 0; } + div.section h4 { background-color: #EEEEFF; + font-size: medium; + font-style: oblique; + font-weight: bold; + margin: 3ex 0 1.5ex 9%; + padding: 0.3ex 0 0.3ex 1%; } + div.section p { margin: 1.5ex 0 1.5ex 10%; } + div.section pre { margin: 3ex 0 3ex 9%; + background-color: #D6E8FF; + padding: 2ex 0 2ex 1%; } + div.section table.fields { width: 90%; + margin: 1.5ex 0 1.5ex 10%; } + div.section table.toc { width: 95%; + margin: 1.5ex 0 1.5ex 5%; } + div.timestamp { text-align: center; + font-size: 69%; + margin: 1.5ex 0 1.5ex 0; } + + h1 { text-align: center; } + h3 { font-size: medium; + margin: 4ex 0 1.5ex 0; } + + p { text-align: justify; } + + pre.colored { color: blue; } + + span.keyword { font-family: monospace; + text-align: left; + white-space: pre; + color: darkblue; } + + table.fields td.val { font-weight: bold; + text-align: right; + width: 30%; + vertical-align: baseline; + padding: 1ex 1em 1ex 0; } + table.fields td.desc { vertical-align: baseline; + padding: 1ex 0 1ex 1em; } + table.fields td.desc p:first-child { margin: 0; } + table.fields td.desc p { margin: 1.5ex 0 0 0; } + table.index { margin: 6ex auto 6ex auto; + border: 0; + border-collapse: separate; + border-spacing: 1em 0.3ex; } + table.index tr { padding: 0; } + table.index td { padding: 0; } + table.index-toc-link { width: 100%; + border: 0; + border-spacing: 0; + margin: 1ex 0 1ex 0; } + table.index-toc-link td.left { padding: 0 0.5em 0 0.5em; + font-size: 83%; + text-align: left; } + table.index-toc-link td.middle { padding: 0 0.5em 0 0.5em; + font-size: 83%; + text-align: center; } + table.index-toc-link td.right { padding: 0 0.5em 0 0.5em; + font-size: 83%; + text-align: right; } + table.synopsis { margin: 6ex auto 6ex auto; + border: 0; + border-collapse: separate; + border-spacing: 2em 0.6ex; } + table.synopsis tr { padding: 0; } + table.synopsis td { padding: 0; } + table.toc td.link { width: 30%; + text-align: right; + vertical-align: baseline; + padding: 1ex 1em 1ex 0; } + table.toc td.desc { vertical-align: baseline; + padding: 1ex 0 1ex 1em; + text-align: left; } + table.toc td.desc p:first-child { margin: 0; + text-align: left; } + table.toc td.desc p { margin: 1.5ex 0 0 0; + text-align: left; } + +</style> +</head> +<body> + +<table class="index-toc-link"><tr><td class="left">[<a href="ft2-index.html">Index</a>]</td><td class="right">[<a href="ft2-toc.html">TOC</a>]</td></tr></table> +<h1>FreeType-2.7.1 API Reference</h1> + +<h1 id="quick_advance">Quick retrieval of advance values</h1> +<h2>Synopsis</h2> +<table class="synopsis"> +<tr><td><a href="#FT_Get_Advance">FT_Get_Advance</a></td><td> </td></tr> +<tr><td><a href="#FT_Get_Advances">FT_Get_Advances</a></td><td><a href="#FT_ADVANCE_FLAG_FAST_ONLY">FT_ADVANCE_FLAG_FAST_ONLY</a></td></tr> +</table> + + +<p>This section contains functions to quickly extract advance values without handling glyph outlines, if possible.</p> + +<div class="section"> +<h3 id="FT_Get_Advance">FT_Get_Advance</h3> +<p>Defined in FT_ADVANCES_H (freetype/ftadvanc.h).</p> +<pre> + FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> ) + <b>FT_Get_Advance</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a> face, + <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> gindex, + <a href="ft2-basic_types.html#FT_Int32">FT_Int32</a> load_flags, + <a href="ft2-basic_types.html#FT_Fixed">FT_Fixed</a> *padvance ); +</pre> + +<p>Retrieve the advance value of a given glyph outline in an <a href="ft2-base_interface.html#FT_Face">FT_Face</a>.</p> + +<h4>input</h4> +<table class="fields"> +<tr><td class="val" id="face">face</td><td class="desc"> +<p>The source <a href="ft2-base_interface.html#FT_Face">FT_Face</a> handle.</p> +</td></tr> +<tr><td class="val" id="gindex">gindex</td><td class="desc"> +<p>The glyph index.</p> +</td></tr> +<tr><td class="val" id="load_flags">load_flags</td><td class="desc"> +<p>A set of bit flags similar to those used when calling <a href="ft2-base_interface.html#FT_Load_Glyph">FT_Load_Glyph</a>, used to determine what kind of advances you need.</p> +</td></tr> +</table> + +<h4>output</h4> +<table class="fields"> +<tr><td class="val" id="padvance">padvance</td><td class="desc"> +<p>The advance value. If scaling is performed (based on the value of ‘load_flags’), the advance value is in 16.16 format. Otherwise, it is in font units.</p> +<p>If <a href="ft2-base_interface.html#FT_LOAD_XXX">FT_LOAD_VERTICAL_LAYOUT</a> is set, this is the vertical advance corresponding to a vertical layout. Otherwise, it is the horizontal advance in a horizontal layout.</p> +</td></tr> +</table> + +<h4>return</h4> +<p>FreeType error code. 0 means success.</p> + +<h4>note</h4> +<p>This function may fail if you use <a href="ft2-quick_advance.html#FT_ADVANCE_FLAG_FAST_ONLY">FT_ADVANCE_FLAG_FAST_ONLY</a> and if the corresponding font backend doesn't have a quick way to retrieve the advances.</p> +<p>A scaled advance is returned in 16.16 format but isn't transformed by the affine transformation specified by <a href="ft2-base_interface.html#FT_Set_Transform">FT_Set_Transform</a>.</p> + +<hr> +<table class="index-toc-link"><tr><td class="left">[<a href="ft2-index.html">Index</a>]</td><td class="middle">[<a href="#">Top</a>]</td><td class="right">[<a href="ft2-toc.html">TOC</a>]</td></tr></table></div> + +<div class="section"> +<h3 id="FT_Get_Advances">FT_Get_Advances</h3> +<p>Defined in FT_ADVANCES_H (freetype/ftadvanc.h).</p> +<pre> + FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> ) + <b>FT_Get_Advances</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a> face, + <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> start, + <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> count, + <a href="ft2-basic_types.html#FT_Int32">FT_Int32</a> load_flags, + <a href="ft2-basic_types.html#FT_Fixed">FT_Fixed</a> *padvances ); +</pre> + +<p>Retrieve the advance values of several glyph outlines in an <a href="ft2-base_interface.html#FT_Face">FT_Face</a>.</p> + +<h4>input</h4> +<table class="fields"> +<tr><td class="val" id="face">face</td><td class="desc"> +<p>The source <a href="ft2-base_interface.html#FT_Face">FT_Face</a> handle.</p> +</td></tr> +<tr><td class="val" id="start">start</td><td class="desc"> +<p>The first glyph index.</p> +</td></tr> +<tr><td class="val" id="count">count</td><td class="desc"> +<p>The number of advance values you want to retrieve.</p> +</td></tr> +<tr><td class="val" id="load_flags">load_flags</td><td class="desc"> +<p>A set of bit flags similar to those used when calling <a href="ft2-base_interface.html#FT_Load_Glyph">FT_Load_Glyph</a>.</p> +</td></tr> +</table> + +<h4>output</h4> +<table class="fields"> +<tr><td class="val" id="padvance">padvance</td><td class="desc"> +<p>The advance values. This array, to be provided by the caller, must contain at least ‘count’ elements.</p> +<p>If scaling is performed (based on the value of ‘load_flags’), the advance values are in 16.16 format. Otherwise, they are in font units.</p> +<p>If <a href="ft2-base_interface.html#FT_LOAD_XXX">FT_LOAD_VERTICAL_LAYOUT</a> is set, these are the vertical advances corresponding to a vertical layout. Otherwise, they are the horizontal advances in a horizontal layout.</p> +</td></tr> +</table> + +<h4>return</h4> +<p>FreeType error code. 0 means success.</p> + +<h4>note</h4> +<p>This function may fail if you use <a href="ft2-quick_advance.html#FT_ADVANCE_FLAG_FAST_ONLY">FT_ADVANCE_FLAG_FAST_ONLY</a> and if the corresponding font backend doesn't have a quick way to retrieve the advances.</p> +<p>Scaled advances are returned in 16.16 format but aren't transformed by the affine transformation specified by <a href="ft2-base_interface.html#FT_Set_Transform">FT_Set_Transform</a>.</p> + +<hr> +<table class="index-toc-link"><tr><td class="left">[<a href="ft2-index.html">Index</a>]</td><td class="middle">[<a href="#">Top</a>]</td><td class="right">[<a href="ft2-toc.html">TOC</a>]</td></tr></table></div> + +<div class="section"> +<h3 id="FT_ADVANCE_FLAG_FAST_ONLY">FT_ADVANCE_FLAG_FAST_ONLY</h3> +<p>Defined in FT_ADVANCES_H (freetype/ftadvanc.h).</p> +<pre> +#define <b>FT_ADVANCE_FLAG_FAST_ONLY</b> 0x20000000L +</pre> + +<p>A bit-flag to be OR-ed with the ‘flags’ parameter of the <a href="ft2-quick_advance.html#FT_Get_Advance">FT_Get_Advance</a> and <a href="ft2-quick_advance.html#FT_Get_Advances">FT_Get_Advances</a> functions.</p> +<p>If set, it indicates that you want these functions to fail if the corresponding hinting mode or font driver doesn't allow for very quick advance computation.</p> +<p>Typically, glyphs that are either unscaled, unhinted, bitmapped, or light-hinted can have their advance width computed very quickly.</p> +<p>Normal and bytecode hinted modes that require loading, scaling, and hinting of the glyph outline, are extremely slow by comparison.</p> + +<hr> +<table class="index-toc-link"><tr><td class="left">[<a href="ft2-index.html">Index</a>]</td><td class="middle">[<a href="#">Top</a>]</td><td class="right">[<a href="ft2-toc.html">TOC</a>]</td></tr></table></div> + +</body> +</html> |