commit | 094a08a489eba10b3804929444dd85b3bf8f472b | [log] [tgz] |
---|---|---|
author | Andreu Botella <abotella@igalia.com> | Fri Jul 12 05:59:17 2024 |
committer | Blink WPT Bot <blink-w3c-test-autoroller@chromium.org> | Fri Jul 12 08:04:25 2024 |
tree | b56e4b608b457e80b68c17777b00c67990df5ff0 | |
parent | 56eea69b2496a1c2f6e70c1d665bd5ff08424466 [diff] |
[line-clamp] Don't hide block-level abspos at the `line-clamp: auto` boundary With `line-clamp: auto`, the clamp point should be chosen such that it is the furthermost possible clamp point where the box doesn't overflow. Since block-level abspos boxes can have a clamp point after them (unlike inline-level ones), and they do not increase the intrinsic size of the container, a block-level abspos box whose static position is exactly at the boundary should be visible. This was not what our implementation did, however. The reason for that is that `BlockLineClampData::ShouldHideForPaint` (and `BlockLineClampData::IsPastClampPoint`) were always returning true for `line-clamp: auto` when a previous box had been found that ended exactly at the boundary. This was meant to hide lines and floats that started exactly at the boundary, since at the time that we're dealing with them in the block layout algorithm, we don't know the height of the line; as well as to handle cases where a previous box might have clamped, but the current BFC offset might still be before the clamp boundary. However, this reasoning does not work for block-level abspos, because they do not take up container space, and because there is a possible clamp point after them. Therefore, this patch adds an optional argument for block-level abspos to provide their static BFC offset instead. Bug: 40336192 Change-Id: Ia2799a2510c3e2d6d1532198ef72443fac120056 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5675924 Reviewed-by: Ian Kilpatrick <ikilpatrick@chromium.org> Commit-Queue: Andreu Botella <abotella@igalia.com> Cr-Commit-Position: refs/heads/main@{#1326556}
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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Clone or otherwise get https://github.com/web-platform-tests/wpt.
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See the documentation website and in particular the system setup for running tests locally.
The wpt
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