f3f0b08d43
Add LayoutPosition and LayoutRange classes. The layout tree root node now has a selection() LayoutRange. It's essentially a start and end LayoutPosition. A LayoutPosition is a LayoutNode, and an optional index into that node. The index is only relevant for text nodes, where it's the character index into the rendered text. HtmlView now updates the selection start/end of the LayoutDocument when clicking and dragging with the left mouse button. We don't paint the selection yet, and there's no way to copy what's selected. It only exists as a LayoutRange.
39 lines
938 B
C++
39 lines
938 B
C++
#pragma once
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#include <LibDraw/FloatRect.h>
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class LayoutNode;
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class RenderingContext;
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class LineBoxFragment {
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friend class LineBox;
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public:
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LineBoxFragment(const LayoutNode& layout_node, int start, int length, const FloatRect& rect)
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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_rect(rect)
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{
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}
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const LayoutNode& 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 FloatRect& rect() const { return m_rect; }
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FloatRect& rect() { return m_rect; }
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float width() const { return m_rect.width(); }
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void render(RenderingContext&);
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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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private:
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const LayoutNode& m_layout_node;
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int m_start { 0 };
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int m_length { 0 };
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FloatRect m_rect;
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};
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