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LibWeb: Use invalidation sets to reduce style recalculation

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Implements idea described in
https://docs.google.com/document/d/1vEW86DaeVs4uQzNFI5R-_xS9TcS1Cs_EUsHRSgCHGu8

Invalidation sets are used to reduce the number of elements marked for
style recalculation by collecting metadata from style rules about the
dependencies between properties that could affect an element’s style.

Currently, this optimization is only applied to style invalidation
triggered by class list mutations on an element.
This commit is contained in:
Aliaksandr Kalenik 2025-01-12 18:38:05 +03:00 • committed by Andreas Kling
commit c5f2a88f69
Notes: github-actions[bot] 2025-01-19 18:55:55 +00:00
11 changed files with 549 additions and 3 deletions
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2
Libraries/LibWeb/DOM/Node.h
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@ -14,6 +14,7 @@
#include <AK/RefPtr.h>
#include <AK/TypeCasts.h>
#include <AK/Vector.h>
#include <LibWeb/CSS/InvalidationSet.h>
#include <LibWeb/DOM/AccessibilityTreeNode.h>
#include <LibWeb/DOM/EventTarget.h>
#include <LibWeb/DOM/Slottable.h>
@ -297,6 +298,7 @@ public:
void set_child_needs_style_update(bool b) { m_child_needs_style_update = b; }
void invalidate_style(StyleInvalidationReason);
void invalidate_style(StyleInvalidationReason, Vector<CSS::InvalidationSet::Property> const&);
void set_document(Badge<Document>, Document&);