ad7e6878fe
This makes them cheap to move around, since we can store them in a NonnullOwnPtr instead of memcopying 2584(!) bytes. Drastically reduces the chance of stack overflow while building the layout tree for deeply nested DOMs (since tree building was putting these things on the stack). This change also exposed a completely unnecessary ComputedValues deep copy in block layout.
72 lines
2.3 KiB
C++
72 lines
2.3 KiB
C++
/*
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* Copyright (c) 2018-2022, 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/OwnPtr.h>
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#include <LibGfx/Rect.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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class Box : public NodeWithStyleAndBoxModelMetrics {
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JS_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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bool is_body() const;
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// https://www.w3.org/TR/css-images-3/#natural-dimensions
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Optional<CSSPixels> natural_width() const { return m_natural_width; }
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Optional<CSSPixels> natural_height() const { return m_natural_height; }
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Optional<CSSPixelFraction> natural_aspect_ratio() const { return m_natural_aspect_ratio; }
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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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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 JS::GCPtr<Painting::Paintable> create_paintable() const override;
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bool is_scroll_container() const;
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bool is_user_scrollable() const;
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protected:
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Box(DOM::Document&, DOM::Node*, NonnullRefPtr<CSS::StyleProperties>);
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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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};
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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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