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| <html xmlns="http://www.w3.org/1999/xhtml"> |
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| <head> |
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| <title>CSS Writing Modes Test: absolutely positioned non-replaced element - 'direction: rtl' and 'top', 'height' and 'bottom' are 'auto'</title> |
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| <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="abs-pos-non-replaced-vrl-012-ref.xht" /> |
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| <meta name="flags" content="ahem image" /> |
| <meta name="assert" content="When 'direction' is 'rtl' and 'top', 'height' and 'bottom' are 'auto', then set 'bottom' to the static position, the height is based on the content and then solve for 'top'." /> |
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| <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" /> |
| <style type="text/css"><![CDATA[ |
| html |
| { |
| writing-mode: vertical-rl; |
| } |
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| div#containing-block |
| { |
| background: red url("support/bg-red-3col-2row-320x320.png"); |
| color: transparent; |
| direction: rtl; |
| font: 80px/1 Ahem; |
| height: 320px; |
| position: relative; |
| width: 320px; |
| } |
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| div#containing-block > span |
| { |
| background-color: red; |
| bottom: auto; |
| color: green; |
| height: auto; |
| position: absolute; |
| top: auto; |
| } |
| |
| /* |
| " |
| 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 |
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| 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. |
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| " |
| If all three of 'left', 'width', and 'right' are 'auto': First set any 'auto' values for 'margin-left' and 'margin-right' to 0. Then, if the 'direction' property of the element establishing the static-position containing block is 'ltr' set 'left' to the static position and apply rule number three below; otherwise, set 'right' to the static position and apply rule number one below. |
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| 1. 'left' and 'width' are 'auto' and 'right' is not 'auto', then the width is shrink-to-fit. Then solve for 'left' |
| " |
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| 'top' + 'margin-top' + 'border-top-width' + 'padding-top' + 'height' + 'padding-bottom' + 'border-bottom-width' + 'margin-bottom' + 'bottom' = height of containing block |
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| So: |
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| (solve) : top: auto |
| + |
| 0px : margin-top |
| + |
| 0px : border-top-width |
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| 0px : padding-top |
| + |
| (based on the content) : height: auto |
| + |
| 0px : padding-bottom |
| + |
| 0px : border-bottom-width |
| + |
| 0px : margin-bottom |
| + |
| 160px : bottom: auto: set to static position |
| ===================== |
| 320px : height of containing block |
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| gives us: |
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| (solve) : top: auto |
| + |
| 0px : margin-top |
| + |
| 0px : border-top-width |
| + |
| 0px : padding-top |
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| 80px : (based on the content) : height: auto |
| + |
| 0px : padding-bottom |
| + |
| 0px : border-bottom-width |
| + |
| 0px : margin-bottom |
| + |
| 160px : bottom: auto: set to static position |
| ===================== |
| 320px : height of containing block |
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| And so computed top value must be 80px . |
| */ |
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| ]]></style> |
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| </head> |
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| <body> |
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| <p><img src="support/pass-cdts-abs-pos-non-replaced.png" width="246" height="36" alt="Image download support must be enabled" /></p> |
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| <div id="containing-block">1 2 34<span>X</span></div> |
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| </body> |
| </html> |
