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216a16d5e1
Automatic update from web-platform-tests
[Layout] bugfix: Update scrollable area after overflow recalc
Bug is:
<container overflow:scroll>
<target transform:scale(1)>
Initially, container's scrollbars are disabled.
When target changes its scale and grows outside of container,
scrollbars were not updated.
Fix #1 is to call UpdateScrollbarEnabledState. This resulted in
scrollbars being painted, but not clickable.
Fix #2, calling UpdateScrollableAreaSet makes scrollbars
clickable too.
Fix #2 was an educated guess.
Bug: 926167
Change-Id: I02454047c87aaecede9c56db1c02bbd1b21b15c5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1704218
Commit-Queue: Aleks Totic <atotic@chromium.org>
Reviewed-by: Stefan Zager <szager@chromium.org>
Cr-Commit-Position: refs/heads/master@{#681091}
--
wpt-commits: a00fc0867640cf60333bc8831fad1170881e67d7
wpt-pr: 17868
34 lines
946 B
HTML
34 lines
946 B
HTML
<!DOCTYPE html>
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<title>CSS Overflow: css-overflow-3</title>
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<link rel="author" href="mailto:atotic@google.com">
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<link rel="help" href="https://crbug.com/926167">
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<link rel="match" href="scrollbars-chrome-bug-001-ref.html">
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<meta name="assert" content="scrollbars keep up to date with a changing transform">
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<style>
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#container {
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width: 200px;
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height: 150px;
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border: 1px solid black;
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overflow: scroll;
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}
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#target {
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width: 100px;
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height: 50px;
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background: green;
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transform: scale(1);
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}
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</style>
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<!-- -->
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<div id="container">
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<div id="target"></div>
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</div>
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<script>
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// 1st transform triggers layer creation, and full layout.
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// 2nd transform just updates overflow, which does not update scrollbars.
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// This triggers the bug.
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document.body.offsetTop;
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document.querySelector("#target").style.transform = "scale(1.5)";
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document.body.offsetTop;
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document.querySelector("#target").style.transform = "scale(4.0)";
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</script>
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