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https://github.com/RGBCube/serenity
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de32b77ceb
This is a part of refactoring towards making the paintable tree independent of the layout tree. Now, instead of transferring text fragments from the layout tree to the paintable tree during the layout commit phase, we allocate separate PaintableFragments that contain only the information necessary for painting. Doing this also allows us to get rid LineBoxes, as they are used only during layout.
77 lines
2.3 KiB
C++
77 lines
2.3 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 <LibGfx/Rect.h>
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#include <LibGfx/TextLayout.h>
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#include <LibJS/Heap/GCPtr.h>
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#include <LibWeb/Forward.h>
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#include <LibWeb/Painting/BorderRadiiData.h>
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#include <LibWeb/PixelUnits.h>
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namespace Web::Layout {
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class LineBoxFragment {
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friend class LineBox;
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public:
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LineBoxFragment(Node const& layout_node, int start, int length, CSSPixelPoint offset, CSSPixelSize size, CSSPixels border_box_top, CSSPixels border_box_bottom, Vector<Gfx::DrawGlyphOrEmoji> glyph_run = {})
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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_border_box_top(border_box_top)
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, m_border_box_bottom(border_box_bottom)
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, m_glyph_run(move(glyph_run))
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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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CSSPixelRect const absolute_rect() const;
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CSSPixelPoint offset() const { return m_offset; }
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void set_offset(CSSPixelPoint offset) { m_offset = offset; }
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// The baseline of a fragment is the number of pixels from the top to the text baseline.
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void set_baseline(CSSPixels y) { m_baseline = y; }
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CSSPixels baseline() const { return m_baseline; }
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CSSPixelSize size() const
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{
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return m_size;
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}
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void set_width(CSSPixels width) { m_size.set_width(width); }
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void set_height(CSSPixels height) { m_size.set_height(height); }
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CSSPixels width() const { return m_size.width(); }
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CSSPixels height() const { return m_size.height(); }
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CSSPixels border_box_top() const { return m_border_box_top; }
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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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bool is_atomic_inline() const;
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Vector<Gfx::DrawGlyphOrEmoji> const& glyph_run() const { return m_glyph_run; }
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private:
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JS::NonnullGCPtr<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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CSSPixelPoint m_offset;
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CSSPixelSize m_size;
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CSSPixels m_border_box_top { 0 };
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CSSPixels m_border_box_bottom { 0 };
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CSSPixels m_baseline { 0 };
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Vector<Gfx::DrawGlyphOrEmoji> m_glyph_run;
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};
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}
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