commit | 263b575d1d1b30360c9d74eed54d6064d18a7caf | [log] [tgz] |
---|---|---|
author | Morten Stenshorne <mstensho@chromium.org> | Mon Feb 21 08:35:55 2022 |
committer | Blink WPT Bot <blink-w3c-test-autoroller@chromium.org> | Mon Feb 21 08:48:28 2022 |
tree | 030f8448a22c0763abfc608d3aa59e39bbd01b90 | |
parent | f928d8282c6ed30f215bd3c3b93ebf7a176853ea [diff] |
Pre-paint: Update first-for-node state at fragmentainers. A nested multicol container may have a padding so tall that there won't be room for any columns until we get to the next outer column. An out-of-flow positioned descendant that is *not* contained by the innermost multicol container needs to be visited exactly once. We missed the OOF, because is_parent_first_for_node in PrePaintTreeWalk:: WalkLayoutObjectChildren() was wrong. It was set by the inner multicol container, but the first fragment of the inner multicol container is one without columns (just padding there), and OOFs are only discovered when walking inside columns. Box (block-flow-root block-flow) #outer Box (column block-flow) Box (block-flow-root block-flow) #inner Box (column block-flow) Box (block-flow-root block-flow) #inner Box (column block-flow) Therefore, update is_parent_first_for_node for each column as well. WalkFragmentationContextRootChildren() already did quite a few things to the PrePaintTreeWalkContext object passed, which we'd have to reset when entering non-fragmentainer children (such as column spanners). This would be one more thing to reset. Instead of this mess, establish a new PrePaintTreeWalkContext for each column. (It also looks like we had forgotten to reset fragmentation_nesting_level when entering spanners.) This also allows us to add some constness to the PrePaintTreeWalkContext argument. Bug: 1295998 Change-Id: I8c471936be9c05a6475a4c135bfa7490ac7b09a5 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3468548 Reviewed-by: Xianzhu Wang <wangxianzhu@chromium.org> Commit-Queue: Morten Stenshorne <mstensho@chromium.org> Cr-Commit-Position: refs/heads/main@{#973450}
The web-platform-tests Project is a cross-browser test suite for the Web-platform stack. Writing tests in a way that allows them to be run in all browsers gives browser projects confidence that they are shipping software that is compatible with other implementations, and that later implementations will be compatible with their implementations. This in turn gives Web authors/developers confidence that they can actually rely on the Web platform to deliver on the promise of working across browsers and devices without needing extra layers of abstraction to paper over the gaps left by specification editors and implementors.
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wpt:matrix.org
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Clone or otherwise get https://github.com/web-platform-tests/wpt.
Note: because of the frequent creation and deletion of branches in this repo, it is recommended to “prune” stale branches when fetching updates, i.e. use git pull --prune
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See the documentation website and in particular the system setup for running tests locally.
The wpt
command provides a frontend to a variety of tools for working with and running web-platform-tests. Some of the most useful commands are:
wpt serve
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- For updating or generating a MANIFEST.json
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