Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: d464b0a192cf527fc0b9ce0d08349f6e81f4f744
https://github.com/WebKit/WebKit/commit/d464b0a192cf527fc0b9ce0d08349f6e81f4f744
Author: Antti Koivisto <[email protected]>
Date: 2025-06-06 (Fri, 06 Jun 2025)
Changed paths:
A
LayoutTests/imported/w3c/web-platform-tests/css/css-anchor-position/position-area-pseudo-element-implicit-anchor-expected.txt
A
LayoutTests/imported/w3c/web-platform-tests/css/css-anchor-position/position-area-pseudo-element-implicit-anchor.html
M Source/WebCore/rendering/PositionedLayoutConstraints.cpp
M Source/WebCore/rendering/RenderElement.cpp
M Source/WebCore/rendering/RenderElement.h
M Source/WebCore/style/AnchorPositionEvaluator.cpp
M Source/WebCore/style/AnchorPositionEvaluator.h
M Source/WebCore/style/StyleTreeResolver.cpp
Log Message:
-----------
[css-anchor-position-1] Support implicit anchor element for pseudo-elements
with position-area
https://bugs.webkit.org/show_bug.cgi?id=294112
rdar://problem/152707685
Reviewed by Alan Baradlay.
Support ::before/::after with implicit anchor and layout time positioning
(position-area/anchor-center).
*
LayoutTests/imported/w3c/web-platform-tests/css/css-anchor-position/position-area-pseudo-element-implicit-anchor-expected.txt:
Added.
*
LayoutTests/imported/w3c/web-platform-tests/css/css-anchor-position/position-area-pseudo-element-implicit-anchor.html:
Added.
* Source/WebCore/rendering/PositionedLayoutConstraints.cpp:
(WebCore::PositionedLayoutConstraints::PositionedLayoutConstraints):
* Source/WebCore/rendering/RenderElement.cpp:
(WebCore::RenderElement::defaultAnchor const): Deleted.
(WebCore::RenderElement::defaultAnchorRenderer const): Deleted.
Move default anchor finding code to AnchorPositionEvaluator.
* Source/WebCore/rendering/RenderElement.h:
* Source/WebCore/style/AnchorPositionEvaluator.cpp:
(WebCore::Style::AnchorPositionEvaluator::findAnchorForAnchorFunctionAndAttemptResolution):
Save the resolved anchor names to anchorPositionedToAnchorMap along with the
anchor box so we can find the implicit anchor easily.
(WebCore::Style::AnchorPositionEvaluator::updateAnchorPositioningStatesAfterInterleavedLayout):
(WebCore::Style::AnchorPositionEvaluator::updateAnchorPositionedStateForLayoutTimePositioned):
Implicit layout-time positioned don't specify position-anchor, so test for
positioning properties also.
(WebCore::Style::AnchorPositionEvaluator::updateSnapshottedScrollOffsets):
(WebCore::Style::AnchorPositionEvaluator::makeAnchorPositionedForAnchorMap):
(WebCore::Style::AnchorPositionEvaluator::isDefaultAnchorInvisibleOrClippedByInterveningBoxes):
(WebCore::Style::AnchorPositionEvaluator::defaultAnchorName):
Helper to get the name of the default anchor.
(WebCore::Style::AnchorPositionEvaluator::defaultAnchorForBox):
Move the code from RenderElement::defaultAnchor and test the names saved in the
anchorPositionedToAnchorMap.
* Source/WebCore/style/AnchorPositionEvaluator.h:
* Source/WebCore/style/StyleTreeResolver.cpp:
(WebCore::Style::TreeResolver::updateAnchorPositioningState):
Also upadate the state for pseudo elements.
Canonical link: https://commits.webkit.org/295913@main
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