fune/testing/web-platform/tests/css/css-break/overflow-clip-008.html
Morten Stenshorne fe6120e8f2 Bug 1706610 [wpt PR 28620] - Don't fragment clipped overflow., a=testonly
Automatic update from web-platform-tests
Don't fragment clipped overflow.

When a node clips block-axis overflow, do not insert any further breaks
when reaching the block-end of the node. We don't want it to cause
generation of superfluous fragmentainers whose only purpose is to hold a
zero-size clipped fragment.

This introduces another reason for aborting and re-running layout,
somewhat similar to the early-break mechanism that we already have
(which is involved when we run out of fragmentainer space at a less than
ideal location).

Bug: 1066616, 829028
Change-Id: Ic2f1082319513a7f24cbe114eb93ebdb75c97bfc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2843465
Reviewed-by: Alison Maher <almaher@microsoft.com>
Reviewed-by: Ian Kilpatrick <ikilpatrick@chromium.org>
Commit-Queue: Morten Stenshorne <mstensho@chromium.org>
Cr-Commit-Position: refs/heads/master@{#875622}

--

wpt-commits: 8cdc55ec5c6581f580601bb2b2828f08a589a6ee
wpt-pr: 28620
2021-04-24 15:48:06 +00:00

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<!DOCTYPE html>
<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
<link rel="help" href="https://www.w3.org/TR/css-break-3/#fragmentation-model">
<link rel="help" href="https://www.w3.org/TR/css-overflow-3/#overflow-properties">
<meta name="assert" content="Clipping only in the inline direction shouldn't affect fragmentation">
<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div style="columns:4; width:100px; column-gap:0; column-fill:auto; height:100px; background:red;">
<div style="overflow-x:clip; height:200px;">
<div style="width:100px; background:red;">
<div style="width:25px; height:400px; background:green;"></div>
</div>
</div>
</div>