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diff --git a/layout/reftests/writing-mode/abspos/s71-abs-pos-non-replaced-vlr-091.xht b/layout/reftests/writing-mode/abspos/s71-abs-pos-non-replaced-vlr-091.xht new file mode 100644 index 000000000..0217c3d48 --- /dev/null +++ b/layout/reftests/writing-mode/abspos/s71-abs-pos-non-replaced-vlr-091.xht @@ -0,0 +1,124 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> + +<html xmlns="http://www.w3.org/1999/xhtml"> + + <head> + + <title>CSS Writing Modes Test: absolutely positioned non-replaced element - 'direction: ltr' and 'top', 'height' and 'bottom' are not 'auto' (overconstrained)</title> + + <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> + <link rel="help" href="http://www.w3.org/TR/css-writing-modes-3/#vertical-layout" title="7.1 Principles of Layout in Vertical Writing Modes" /> + <link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#abs-non-replaced-width" title="10.3.7 Absolutely positioned, non-replaced elements" /> + <link rel="match" href="s71-abs-pos-non-replaced-vlr-007-ref.xht" /> + + <meta name="flags" content="ahem image" /> + <meta name="assert" content="When 'direction' is 'ltr' and 'top', 'height' and 'bottom' are not 'auto' and if the values are overconstrained, then ignore 'bottom' and solve for 'bottom'." /> + + <link type="text/css" rel="stylesheet" href="support/ahem.css" /> + + <style type="text/css"><![CDATA[ + html + { + -ah-writing-mode: vertical-lr; + -webkit-writing-mode: vertical-lr; + writing-mode: tb-lr; /* IE11 */ + writing-mode: vertical-lr; + } + + div#containing-block + { + background: red url("support/bg-red-2col-3row-320x320.png"); + color: transparent; + direction: ltr; + font: 80px/1 Ahem; + height: 320px; + position: relative; + width: 320px; + } + + div#containing-block > span + { + background-color: red; + bottom: 2em; + color: green; + height: 1em; + margin-bottom: 0em; + margin-top: 0em; + position: absolute; + top: 2em; + } + +/* +" +Layout calculation rules (such as those in CSS2.1, Section 10.3) that apply to the horizontal dimension in horizontal writing modes instead apply to the vertical dimension in vertical writing modes. +" +7.1 Principles of Layout in Vertical Writing Modes +http://www.w3.org/TR/css-writing-modes-3/#vertical-layout + +So here, *-top and *-bottom properties are input into the §10.3.7 algorithms where *-top properties refer to *-left properties in the layout rules and where *-bottom properties refer to *-right properties in the layout rules. + +" +If the values are over-constrained, ignore the value for 'left' (in case the 'direction' property of the containing block is 'rtl') or 'right' (in case 'direction' is 'ltr') and solve for that value. +" + +'top' + 'margin-top' + 'border-top-width' + 'padding-top' + 'height' + 'padding-bottom' + 'border-bottom-width' + 'margin-bottom' + 'bottom' = height of containing block + +So: + + 160px : top + + + 0px : margin-top + + + 0px : border-top-width + + + 0px : padding-top + + + 80px : height + + + 0px : padding-bottom + + + 0px : border-bottom-width + + + 0px : margin-bottom + + + 160px : bottom + ===================== + 320px : height of containing block + +gives us: + + 160px : top + + + 0px : margin-top + + + 0px : border-top-width + + + 0px : padding-top + + + 80px : height + + + 0px : padding-bottom + + + 0px : border-bottom-width + + + 0px : margin-bottom + + + (solve) : bottom + ===================== + 320px : height of containing block + +And so computed bottom value must be 80px . +*/ + + ]]></style> + + </head> + + <body> + + <p><img src="support/pass-cdts-abs-pos-non-replaced.png" width="246" height="36" alt="Image download support must be enabled" /></p> + + <div id="containing-block">1 2 34<span>X</span></div> + + </body> +</html>
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