c9700e100e
This patch adds a map of Layout::Node to FormattingState::NodeState. Instead of updating layout nodes incrementally as layout progresses through the formatting contexts, all updates are now written to the corresponding NodeState instead. At the end of layout, FormattingState::commit() is called, which transfers all the values from the NodeState objects to the Node. This will soon allow us to perform completely non-destructive layouts which don't affect the tree. Note that there are many imperfections here, and still many places where we assign to the NodeState, but later read directly from the Node instead. I'm just committing at this stage to make subsequent diffs easier to understand.
72 lines
1.9 KiB
C++
72 lines
1.9 KiB
C++
/*
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* Copyright (c) 2018-2020, 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/Weakable.h>
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#include <LibGfx/Forward.h>
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#include <LibGfx/Rect.h>
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#include <LibWeb/Forward.h>
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namespace Web::Layout {
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class LineBoxFragment : public Weakable<LineBoxFragment> {
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friend class LineBox;
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public:
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enum class Type {
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Normal,
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Leading,
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Trailing,
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};
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LineBoxFragment(Node const& layout_node, int start, int length, const Gfx::FloatPoint& offset, const Gfx::FloatSize& size, Type type)
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: m_layout_node(layout_node)
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, m_start(start)
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, m_length(length)
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, m_offset(offset)
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, m_size(size)
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, m_type(type)
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{
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}
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Node const& layout_node() const { return m_layout_node; }
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int start() const { return m_start; }
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int length() const { return m_length; }
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const Gfx::FloatRect absolute_rect() const;
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Type type() const { return m_type; }
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const Gfx::FloatPoint& offset() const { return m_offset; }
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void set_offset(const Gfx::FloatPoint& offset) { m_offset = offset; }
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const Gfx::FloatSize& size() const { return m_size; }
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void set_width(float width) { m_size.set_width(width); }
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void set_height(float height) { m_size.set_height(height); }
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float width() const { return m_size.width(); }
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float height() const { return m_size.height(); }
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float absolute_x() const { return absolute_rect().x(); }
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void paint(PaintContext&, PaintPhase);
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bool ends_in_whitespace() const;
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bool is_justifiable_whitespace() const;
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StringView text() const;
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int text_index_at(float x) const;
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Gfx::FloatRect selection_rect(const Gfx::Font&) const;
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private:
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Node const& m_layout_node;
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int m_start { 0 };
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int m_length { 0 };
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Gfx::FloatPoint m_offset;
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Gfx::FloatSize m_size;
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Type m_type { Type::Normal };
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};
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}
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