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7cae4fadbc
Allows us to avoid DOM node lookup whenever we need to query natural size of a box during layout. Makes 3-4% of `Box::preferred_aspect_ratio()` go away from profiles on www.nyan.cat
95 lines
3.2 KiB
C++
95 lines
3.2 KiB
C++
/*
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* Copyright (c) 2018-2022, 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/OwnPtr.h>
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#include <LibJS/Heap/Cell.h>
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#include <LibWeb/Layout/Node.h>
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namespace Web::Layout {
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struct LineBoxFragmentCoordinate {
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size_t line_box_index { 0 };
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size_t fragment_index { 0 };
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};
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struct IntrinsicSizes {
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Optional<CSSPixels> min_content_width;
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Optional<CSSPixels> max_content_width;
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HashMap<CSSPixels, Optional<CSSPixels>> min_content_height;
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HashMap<CSSPixels, Optional<CSSPixels>> max_content_height;
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};
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class Box : public NodeWithStyleAndBoxModelMetrics {
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GC_CELL(Box, NodeWithStyleAndBoxModelMetrics);
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public:
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Painting::PaintableBox const* paintable_box() const;
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Painting::PaintableBox* paintable_box();
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// https://www.w3.org/TR/css-images-3/#natural-dimensions
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Optional<CSSPixels> natural_width() const;
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Optional<CSSPixels> natural_height() const;
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Optional<CSSPixelFraction> natural_aspect_ratio() const;
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bool has_natural_width() const { return natural_width().has_value(); }
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bool has_natural_height() const { return natural_height().has_value(); }
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bool has_natural_aspect_ratio() const { return natural_aspect_ratio().has_value(); }
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bool has_size_containment() const { return m_has_size_containment; }
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void set_has_size_containment(bool value) { m_has_size_containment = value; }
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void set_natural_width(Optional<CSSPixels> width) { m_natural_width = width; }
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void set_natural_height(Optional<CSSPixels> height) { m_natural_height = height; }
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void set_natural_aspect_ratio(Optional<CSSPixelFraction> ratio) { m_natural_aspect_ratio = ratio; }
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// https://www.w3.org/TR/css-sizing-4/#preferred-aspect-ratio
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Optional<CSSPixelFraction> preferred_aspect_ratio() const;
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bool has_preferred_aspect_ratio() const { return preferred_aspect_ratio().has_value(); }
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virtual ~Box() override;
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virtual void did_set_content_size() { }
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virtual GC::Ptr<Painting::Paintable> create_paintable() const override;
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void add_contained_abspos_child(GC::Ref<Node> child) { m_contained_abspos_children.append(child); }
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void clear_contained_abspos_children() { m_contained_abspos_children.clear(); }
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Vector<GC::Ref<Node>> const& contained_abspos_children() const { return m_contained_abspos_children; }
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virtual void visit_edges(Cell::Visitor&) override;
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IntrinsicSizes& cached_intrinsic_sizes() const
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{
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if (!m_cached_intrinsic_sizes)
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m_cached_intrinsic_sizes = make<IntrinsicSizes>();
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return *m_cached_intrinsic_sizes;
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}
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void reset_cached_intrinsic_sizes() const { m_cached_intrinsic_sizes.clear(); }
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protected:
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Box(DOM::Document&, DOM::Node*, GC::Ref<CSS::ComputedProperties>);
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Box(DOM::Document&, DOM::Node*, NonnullOwnPtr<CSS::ComputedValues>);
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private:
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virtual bool is_box() const final { return true; }
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Optional<CSSPixels> m_natural_width;
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Optional<CSSPixels> m_natural_height;
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Optional<CSSPixelFraction> m_natural_aspect_ratio;
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bool m_has_size_containment { false };
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Vector<GC::Ref<Node>> m_contained_abspos_children;
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OwnPtr<IntrinsicSizes> mutable m_cached_intrinsic_sizes;
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};
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template<>
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inline bool Node::fast_is<Box>() const { return is_box(); }
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}
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