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4147f36107
Before this patch, we made scrollable frames derive their baseline from their margin-box, because that's what the spec requires for scrollable inline-block boxes. However, the spec now singles out inline-block as a special case, and other sorts of scrollable inline-level containers are supposed to derive their baseline from the scrolled content. So, this patch makes us do that, with an exception for scrollable inline-block boxes. For more info about the block-inside special case, see the end of the "block containers" chunk here: https://drafts.csswg.org/css-align/#baseline-export (Though that spec text may be a bit too specific, per my spec issue at https://github.com/w3c/csswg-drafts/issues/3611 -- that's why this patch checks for block-inside rather than inline-block.) Differential Revision: https://phabricator.services.mozilla.com/D18481 --HG-- extra : moz-landing-system : lando
58 lines
1.5 KiB
HTML
58 lines
1.5 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<title>
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CSS Test: baseline of scrollable element should be taken from its
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contents. (Except if the scrollable element is an inline-block, which gets
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baseline from its margin-box.)
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</title>
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<link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com">
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<link rel="author" title="Mozilla" href="https://www.mozilla.org">
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<link rel="help" href="https://drafts.csswg.org/css-align/#baseline-export">
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<link rel="match" href="reference/baseline-of-scrollable-1-ref.html">
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<style>
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.container {
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overflow: hidden;
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height: 50px;
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width: 100px;
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border-style: solid;
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border-width: 2px 3px 4px 5px;
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padding: 4px 5px 7px 8px;
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margin: 1px 2px 3px 4px;
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}
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.inline-block {
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display: inline-block;
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}
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.inline-flex {
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display: inline-flex;
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}
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.inline-grid {
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display: inline-grid;
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}
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</style>
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</head>
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<body>
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Test passes if the a/b text aligns with the bottom margin-edge of the "block"
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rect and baseline-aligns with the "flex" and "grid" text.
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<br><br>
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<!-- Note: for this first "inline-block" case, the element's baseline is
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synthesized from its margin box. For the other cases, the element's
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baseline is taken from its contents, i.e. the text inside of it. -->
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a
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<div class="container inline-block">block</div>
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b
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<br>
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a
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<div class="container inline-flex">flex</div>
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b
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<br>
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a
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<div class="container inline-grid">grid</div>
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b
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</body>
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</html>
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