Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 6d342d3c33b948e336800d85c61561cc94019730
https://github.com/WebKit/WebKit/commit/6d342d3c33b948e336800d85c61561cc94019730
Author: Elika Etemad <[email protected]>
Date: 2025-10-02 (Thu, 02 Oct 2025)
Changed paths:
A
LayoutTests/imported/w3c/web-platform-tests/css/css-anchor-position/position-area-overflow-icb-001-expected.html
A
LayoutTests/imported/w3c/web-platform-tests/css/css-anchor-position/position-area-overflow-icb-001.html
A
LayoutTests/imported/w3c/web-platform-tests/css/css-anchor-position/position-area-overflow-icb-002-expected.html
A
LayoutTests/imported/w3c/web-platform-tests/css/css-anchor-position/position-area-overflow-icb-002.html
M
LayoutTests/imported/w3c/web-platform-tests/css/css-anchor-position/position-area-scrolling-003.tentative-expected.txt
M Source/WebCore/rendering/PositionedLayoutConstraints.cpp
M Source/WebCore/rendering/PositionedLayoutConstraints.h
Log Message:
-----------
Expand position-area CB to include in-flow scrollable area for ICB
https://bugs.webkit.org/show_bug.cgi?id=299950
rdar://161741583
Reviewed by Alan Baradlay.
This is not a complete fix for the spec requirement to cover the scrollable
area of scrollable containing blocks, but it fixes the most problematic case:
typical overflow of the initial containing block.
See https://bugs.webkit.org/show_bug.cgi?id=291864 for more complete follow-up.
Tests:
imported/w3c/web-platform-tests/css/css-anchor-position/position-area-overflow-icb-001.html
imported/w3c/web-platform-tests/css/css-anchor-position/position-area-overflow-icb-002.html
*
LayoutTests/imported/w3c/web-platform-tests/css/css-anchor-position/position-area-overflow-icb-001-expected.html:
Added.
*
LayoutTests/imported/w3c/web-platform-tests/css/css-anchor-position/position-area-overflow-icb-001.html:
Added.
*
LayoutTests/imported/w3c/web-platform-tests/css/css-anchor-position/position-area-overflow-icb-002-expected.html:
Added.
*
LayoutTests/imported/w3c/web-platform-tests/css/css-anchor-position/position-area-overflow-icb-002.html:
Added.
Add some basic reftests for this case.
*
LayoutTests/imported/w3c/web-platform-tests/css/css-anchor-position/position-area-scrolling-003.tentative-expected.txt:
Mark test as failing. The test is wrong in any case, but also not worth fixing
until we have a more complete fix for this issue.
* Source/WebCore/rendering/PositionedLayoutConstraints.cpp:
(WebCore::PositionedLayoutConstraints::captureScrollableArea):
* Source/WebCore/rendering/PositionedLayoutConstraints.h:
Expand the position-area ICB to cover the area of an in-flow root element.
Canonical link: https://commits.webkit.org/300921@main
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