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9973b01848
This is a improved version ofa73cd88f0cThe old commit was reverted in552dd18696The new version only paints an element into a new layer if background blend modes other than normal are used. The rasterization performance of most websites should therefore not suffer. Co-Authored-By: Alexander Kalenik <kalenik.aliaksandr@gmail.com>
63 lines
1.9 KiB
C++
63 lines
1.9 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 <LibGfx/Matrix4x4.h>
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#include <LibWeb/Painting/Paintable.h>
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namespace Web::Painting {
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class 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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FocusAndOverlay,
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};
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static void paint_node_as_stacking_context(Paintable const&, PaintContext&);
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static void paint_descendants(PaintContext&, Paintable const&, StackingContextPaintPhase);
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static void paint_svg(PaintContext&, PaintableBox const&, PaintPhase);
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void paint(PaintContext&) const;
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[[nodiscard]] TraversalDecision hit_test(CSSPixelPoint, HitTestType, Function<TraversalDecision(HitTestResult)> const& callback) const;
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Gfx::AffineTransform affine_transform_matrix() const;
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void dump(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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private:
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GC::Ref<PaintableBox> m_paintable;
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StackingContext* const m_parent { nullptr };
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Vector<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(PaintContext&, StackingContext const&);
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void paint_internal(PaintContext&) const;
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};
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}
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