mirror of
https://github.com/RGBCube/serenity
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06c176bbfb
...to avoid allocating a copy of glyph run for painting commands. We can't simply save pointers to a glyph run in layout/paintable tree because it should be safe to deallocate layout and paintable trees after painting commands are recorded, if in the future we decide to move command execution to a separate thread.
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> glyphs)
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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(adopt_ref(*new Gfx::GlyphRun(move(glyphs))))
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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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Gfx::GlyphRun 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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NonnullRefPtr<Gfx::GlyphRun> m_glyph_run;
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};
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}
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