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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.
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5 changed files with 33 additions and 46 deletions
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@ -48,17 +48,14 @@ enum class HitTestType {
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TextCursor, // Clicking past the right/bottom edge of text will still hit the text
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};
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class Paintable : public JS::Cell {
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class Paintable
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: public JS::Cell
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, public TreeNode<Paintable> {
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JS_CELL(Paintable, Cell);
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public:
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virtual ~Paintable() = default;
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Paintable const* first_child() const;
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Paintable const* last_child() const;
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Paintable const* next_sibling() const;
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Paintable const* previous_sibling() const;
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template<typename U, typename Callback>
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TraversalDecision for_each_in_inclusive_subtree_of_type(Callback callback) const
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{
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