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https://github.com/RGBCube/serenity
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75e0b21940
This is mainly so we can easily read that matrix later, but also has the benefit of only calculating the matrix once, instead of every time we paint. :^)
56 lines
1.6 KiB
C++
56 lines
1.6 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.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/Layout/Node.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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public:
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StackingContext(Layout::Box&, StackingContext* parent);
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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() const { return *m_box.paint_box(); }
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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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void paint_descendants(PaintContext&, Layout::Node&, StackingContextPaintPhase) const;
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void paint(PaintContext&) const;
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Optional<HitTestResult> hit_test(Gfx::FloatPoint const&, HitTestType) const;
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Gfx::FloatMatrix4x4 const& transform_matrix() const { return m_transform; }
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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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private:
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Layout::Box& m_box;
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Gfx::FloatMatrix4x4 m_transform;
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StackingContext* const m_parent { nullptr };
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Vector<StackingContext*> m_children;
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void paint_internal(PaintContext&) const;
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Gfx::FloatMatrix4x4 get_transformation_matrix(CSS::Transformation const& transformation) const;
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Gfx::FloatMatrix4x4 combine_transformations(Vector<CSS::Transformation> const& transformations) const;
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Gfx::FloatPoint transform_origin() const;
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};
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}
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