88 lines
2.6 KiB
HTML
88 lines
2.6 KiB
HTML
<!DOCTYPE html>
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<meta charset="UTF-8">
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<title>CSS Writing Modes Test: 'writing-mode: vertical-lr' set to <body> element propagates to viewport</title>
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<link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
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<link rel="help" href="https://www.w3.org/TR/css-writing-modes-3/#principal-flow" title="8. The Principal Writing Mode">
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<!--
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Issue 3066: [css-writing-modes] Does vertical writing mode of an HTML body
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element cause an orthogonal flow?
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https://github.com/w3c/csswg-drafts/issues/3066
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-->
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<link rel="match" href="wm-propagation-body-033-ref.html">
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<meta name="assert" content="This test checks that when the root element has a <body> child element, then the principal writing mode is instead taken from the values of writing-mode and direction on the first such child element instead of taken from the root element. Also, a small script in this test verifies that the computed value of 'writing-mode' of the root element itself is not affected by such propagation.">
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<!--
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Tests 032 to 035: html's writing-mode is not specified
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Tests 036 to 039: html's writing-mode is specified as horizontal-tb
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Tests 040 to 043: html's writing-mode is specified as vertical-rl
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Tests 044 to 047: html's writing-mode is specified as vertical-lr
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Tests 048 to 051: html's writing-mode is specified as sideways-rl
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Tests 052 to 055: html's writing-mode is specified as sideways-lr
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-->
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<style>
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html
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{
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writing-mode: horizontal-tb;
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}
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html::before
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{
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background-color: orange;
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content: "";
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display: block;
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height: 100px;
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margin-left: 8px;
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margin-top: 8px;
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margin-right: 1em;
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width: 100px;
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}
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body
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{
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writing-mode: vertical-lr;
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}
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h1#second-test-condition
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{
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background-color: red;
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color: yellow;
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}
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</style>
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<script>
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function verifyComputedValueDocRoot()
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{
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if(getComputedStyle(document.documentElement)["writing-mode"] == "horizontal-tb")
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{
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document.getElementById("second-test-condition").style.display = "none";
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};
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/*
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If the computed value of 'writing-mode' of the root element
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itself is not affected by such propagation, then the big FAIL
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word will not be displayed.
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*/
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}
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</script>
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<body onload="verifyComputedValueDocRoot();">
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<div><img src="support/wm-propagation-body-003-exp-res.png" width="340" height="37" alt="Image download support must be enabled"></div>
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<!--
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The image says:
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Test passes if there is an orange square
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in the <strong>upper-left corner</strong> of the page.
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-->
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<h1 id="second-test-condition">FAIL</h1>
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