commit | 616577e3962171d2ffe41472e13f6353e6ea43ef | [log] [tgz] |
---|---|---|
author | Manuel Rego Casasnovas <rego@igalia.com> | Wed Jun 30 09:50:22 2021 |
committer | Blink WPT Bot <blink-w3c-test-autoroller@chromium.org> | Wed Jun 30 10:00:01 2021 |
tree | 84593383a301f0d811d8f9116e112e70f2fe00c8 | |
parent | c7fdfb92b4623d8432dd144acb30a812fc5f6a90 [diff] |
Fix RecalcLayoutOverflow() for multicol in LayoutNGBlockFragmentation The fragmentainer in multicol is still using a legacy layout object. When we reach the fragment of the column, we get a LayoutMultiColumnFlowThread legacy object, and we call LayoutBlock::RecalcLayoutOverflow(). That means that we start to use the legacy layout code to recalc the layout overflow. To fix this this patch is skipping the fragmentainers in RecalcChildLayoutOverflow(), and going to the children directly. The fragmentainers have the positioned objects as children, so we process them properly. The patch also uses AllowPostLayoutScope to avoid DCHECK failures, as all the recalc layout overflow code uses PostLayout. This only fixes the scrollable-overflow-transform-dynamic-008.html test when LayoutNGBlockFragmentation is enabled. Only the first test case pass, due to an invalidation issue related to multicol and positioned elements (see crbug.com/1223220). BUG=1221181,1223220 TEST=external/wpt/css/css-multicol/multicol-overflow-positioned-transform-001.html TEST=external/wpt/css/css-multicol/multicol-overflow-transform-001.html Change-Id: I8ecda520551f2c3e832f2e77cdedcb1fc17fe99f Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2968984 Reviewed-by: Morten Stenshorne <mstensho@chromium.org> Reviewed-by: Alison Maher <almaher@microsoft.com> Commit-Queue: Manuel Rego <rego@igalia.com> Cr-Commit-Position: refs/heads/master@{#897304}
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