mirror of
https://github.com/LadybirdBrowser/ladybird
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2e4eebe4e5
Instead of computing and caching the transform matrix and transform origin on PaintableBox during resolve_paint_properties(), compute them inline during assign_accumulated_visual_contexts() where they are actually consumed. This makes PaintableBox smaller by not wasting space for properties that are only consumed during AccumulatedVisualContext tree construction.
66 lines
2.1 KiB
C++
66 lines
2.1 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <andreas@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Vector.h>
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#include <LibGC/CellAllocator.h>
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#include <LibWeb/Export.h>
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#include <LibWeb/Painting/Paintable.h>
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namespace Web::Painting {
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class WEB_API StackingContext final : public GC::Cell {
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GC_CELL(StackingContext, GC::Cell);
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GC_DECLARE_ALLOCATOR(StackingContext);
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friend class ViewportPaintable;
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public:
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StackingContext(PaintableBox&, StackingContext* parent, size_t index_in_tree_order);
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StackingContext* parent() { return m_parent; }
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StackingContext const* parent() const { return m_parent; }
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PaintableBox const& paintable_box() const { return *m_paintable; }
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enum class StackingContextPaintPhase {
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BackgroundAndBorders,
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Floats,
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BackgroundAndBordersForInlineLevelAndReplaced,
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Foreground,
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};
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static void paint_node_as_stacking_context(Paintable const&, DisplayListRecordingContext&);
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static void paint_descendants(DisplayListRecordingContext&, Paintable const&, StackingContextPaintPhase);
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static void paint_svg(DisplayListRecordingContext&, PaintableBox const&, PaintPhase);
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void paint(DisplayListRecordingContext&) const;
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[[nodiscard]] TraversalDecision hit_test(CSSPixelPoint, HitTestType, Function<TraversalDecision(HitTestResult)> const& callback) const;
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void dump(StringBuilder&, int indent = 0) const;
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void sort();
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void set_last_paint_generation_id(u64 generation_id);
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virtual void visit_edges(Visitor&) override;
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private:
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GC::Ref<PaintableBox> m_paintable;
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GC::Ptr<StackingContext> m_parent;
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Vector<GC::Ref<StackingContext>> m_children;
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size_t m_index_in_tree_order { 0 };
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Optional<u64> m_last_paint_generation_id;
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Vector<GC::Ref<PaintableBox const>> m_positioned_descendants_and_stacking_contexts_with_stack_level_0;
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Vector<GC::Ref<PaintableBox const>> m_non_positioned_floating_descendants;
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static void paint_child(DisplayListRecordingContext&, StackingContext const&);
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void paint_internal(DisplayListRecordingContext&) const;
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};
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}
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