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LibWeb: Make the paint tree a proper standalone tree

Until now, paint trees have been piggybacking on the layout tree for
traversal, and paintables didn't actually have their own parent/child
pointers.

This patch changes that by making Paintable inherit from TreeNode, and
adding a new pass to LayoutState::commit() where we recursively build
the new paint tree.
This commit is contained in:
Andreas Kling 2023-08-18 12:30:27 +02:00
parent 4d4dbacfc3
commit 216bd513fa
5 changed files with 33 additions and 46 deletions

View file

@ -148,7 +148,8 @@ struct LayoutState {
Optional<Painting::PaintableBox::TableCellCoordinates> m_table_cell_coordinates;
};
void commit();
// Commits the used values produced by layout and builds a paintable tree.
void commit(Box& root);
// NOTE: get_mutable() will CoW the UsedValues if it's inherited from an ancestor state;
UsedValues& get_mutable(NodeWithStyleAndBoxModelMetrics const&);