commit | 1bce3fabaaf18dda576d83f64f3ef03bdd647e3b | [log] [tgz] |
---|---|---|
author | Alison Maher <almaher@microsoft.com> | Wed Aug 11 16:19:33 2021 |
committer | Blink WPT Bot <blink-w3c-test-autoroller@chromium.org> | Wed Aug 11 16:31:33 2021 |
tree | 5f2bcb3a87e43ff4f6c1e97375b313f64a4a071f | |
parent | 2af6337ba28f44880558f1a637725d4673e7065f [diff] |
[LayoutNG] Break token for new column before spanner In CL:3018723, logic was added to the column layout algorithm to lay out any OOF descendants when we find a spanner to ensure that any OOF descendants found before a spanner are actually laid out before the spanner. If a new column was created for an OOF before the spanner, we wouldn't end up creating a column break token for that new column if the OOF didn't break. This CL adds logic to NGSimplifiedOOFLayoutAlgorithm to make sure that a break token is created for the column in this case. Additionally, if any columns are added after the spanner, we would end up crashing because the new column created for the OOF was not taken into account when adding the subsequent column (i.e. the sequence number and consumed block size were incorrect, and the subsequent column was added to the flow thread at the wrong index). To fix this, update the next column break token in MulticolPartWalker to the break token of new column added for the OOF. In order for layout to continue correctly from this new break token, any child break tokens from the previous column needed to be copied over to the new column generated during OOF layout. Otherwise, those children would not resume layout after the spanner. In addition, if an existing column fragment was replaced via NGSimplifiedOOFLayoutAlgorithm, and it had a child that had broken due to a break before, we would miss adding that child break token via child_iterator_. To fix this, add any child break tokens from the old fragment that were the result of a break before prior to simplified layout completion. Bug: 1237247 Change-Id: I55c73fc36a604e858dde5859f65a1ca66023e54a Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3082315 Reviewed-by: Morten Stenshorne <mstensho@chromium.org> Commit-Queue: Alison Maher <almaher@microsoft.com> Cr-Commit-Position: refs/heads/master@{#910828}
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