Sajid Anwar
a3e1d680bb
Also adds WPT reftests to validate alignment behavior in horizontal and vertical writing modes with the different `alignment-baseline` values. Additionally: - The `alignment-baseline: middle` tests have failing expectations. This is because the existing implementation does not match the css-inline-3 definition (which the new WPTs follow). See Bug 2030203. - The WidthTest-Regular.otf support font was updated to remove its unusual ideographic-under baseline value, which affected its synthesized central baseline. With the new support for `alignment-baseline: central`, this broke a number of `text-combine-upright-compression-*` WPT reftests. The non-centered baseline values were removed from this test using FontForge, so that the synthesized central baseline matched the expectation of the test references. Differential Revision: https://phabricator.services.mozilla.com/D292136
55 lines
2.0 KiB
HTML
55 lines
2.0 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<link rel="help" href="https://drafts.csswg.org/css-inline-3/#baseline-synthesis-box">
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<link rel="match" href="alignment-baseline-vertical-rl-003-ref.html">
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<link rel="stylesheet" href="/fonts/baseline-diagnostic/baseline-diagnostic-font.css">
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<script src="support/variant-class.js"></script>
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<meta name="assert" content="alignment-baseline synthesizes baselines of atomic inlines including margins" />
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<meta name="flags" content="image" />
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<meta charset="utf-8">
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<meta name="variant" content="?class=baseline">
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<meta name="variant" content="?class=text-bottom">
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<meta name="variant" content="?class=alphabetic">
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<meta name="variant" content="?class=ideographic">
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<meta name="variant" content="?class=middle">
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<meta name="variant" content="?class=central">
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<meta name="variant" content="?class=mathematical">
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<meta name="variant" content="?class=hanging">
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<meta name="variant" content="?class=text-top">
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<style>
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:root {
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font: 200px/1 'BaselineDiagnostic';
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}
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#container {
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writing-mode: vertical-rl;
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}
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img {
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width: 100px;
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height: 100px;
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margin-block-start: -10px;
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margin-block-end: -30px;
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/* Visualize block start/end margins */
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box-shadow:
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inset -10px 0px black,
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inset 30px 0px 0px black;
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}
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.baseline :is(#target, img) { alignment-baseline: baseline; }
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.text-bottom :is(#target, img) { alignment-baseline: text-bottom; }
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.alphabetic :is(#target, img) { alignment-baseline: alphabetic; }
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.ideographic :is(#target, img) { alignment-baseline: ideographic; }
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.middle :is(#target, img) { alignment-baseline: middle; }
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.central :is(#target, img) { alignment-baseline: central; }
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.mathematical :is(#target, img) { alignment-baseline: mathematical; }
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.hanging :is(#target, img) { alignment-baseline: hanging; }
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.text-top :is(#target, img) { alignment-baseline: text-top; }
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</style>
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</head>
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<body>
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<span id="container">X<img src="/images/checkerboard.svg"></span>
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</body>
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</html> |