Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 58d4460957a8b92c7109bddc65c5972a556aceb2
https://github.com/WebKit/WebKit/commit/58d4460957a8b92c7109bddc65c5972a556aceb2
Author: Rob Buis <[email protected]>
Date: 2024-02-12 (Mon, 12 Feb 2024)
Changed paths:
A
LayoutTests/imported/w3c/web-platform-tests/css/css-contain/content-visibility/content-visibility-getboundingclientrect-on-children-expected.txt
A
LayoutTests/imported/w3c/web-platform-tests/css/css-contain/content-visibility/content-visibility-getboundingclientrect-on-children.html
M Source/WebCore/dom/Document.cpp
M Source/WebCore/rendering/RenderBlock.cpp
M Source/WebCore/rendering/RenderBlockFlow.cpp
M Source/WebCore/rendering/RenderBox.cpp
M Source/WebCore/rendering/RenderElement.cpp
M Source/WebCore/rendering/RenderElement.h
M Source/WebCore/rendering/RenderElementInlines.h
M Source/WebCore/rendering/RenderGrid.cpp
M Source/WebCore/rendering/RenderObject.cpp
M Source/WebCore/rendering/RenderObject.h
Log Message:
-----------
[content-visibility] Optimize lazy layout
https://bugs.webkit.org/show_bug.cgi?id=263327
Reviewed by Alan Baradlay.
Keep track of whether a hidden content-visibility subtree has been laid out
using a dedicated bit
named everHadSkippedContentLayout, and only force layout if
everHadSkippedContentLayout is false.
In order to make clearNeedsLayoutForSkippedContent work correctly the
everHadSkippedContentLayout
bit is cleared for the whole content-visibility subtree.
This patch also merges isSkippedContentRootForLayout and isSkippedContentRoot
since it was not
always clear which one to call and was a source of bugs. The new behaviour is
now to always take layout into
account, but for size containment related code the static
WebCore::isSkippedContentRoot is used
that does not take layout into account since size containment determination
should be invariant to (forced) layout.
The test content-visibility-getboundingclientrect-on-children.html is added to
verify layout is forced
only once for subtrees.
Canonical link: https://commits.webkit.org/274490@main
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