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LibWeb: Use separate structure to represent fragments in paintable tree

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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.
This commit is contained in:
Aliaksandr Kalenik 2024-01-12 21:25:05 +01:00 • committed by Andreas Kling
parent 785fa60cca
commit de32b77ceb
401 changed files with 2122 additions and 3614 deletions
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59
Userland/Libraries/LibWeb/Painting/PaintableFragment.h Normal file
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/*
* Copyright (c) 2024, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibWeb/Layout/LineBoxFragment.h>
#include <LibWeb/Layout/Node.h>
#include <LibWeb/Painting/BorderRadiiData.h>
#include <LibWeb/PixelUnits.h>
namespace Web::Painting {
class PaintableFragment {
public:
explicit PaintableFragment(Layout::LineBoxFragment const&);
Layout::Node const& layout_node() const { return m_layout_node; }
int start() const { return m_start; }
int length() const { return m_length; }
CSSPixels baseline() const { return m_baseline; }
CSSPixelPoint offset() const { return m_offset; }
void set_offset(CSSPixelPoint offset) { m_offset = offset; }
CSSPixelSize size() const { return m_size; }
BorderRadiiData const& border_radii_data() const { return m_border_radii_data; }
void set_border_radii_data(BorderRadiiData const& border_radii_data) { m_border_radii_data = border_radii_data; }
CSSPixelRect const absolute_rect() const;
Vector<Gfx::DrawGlyphOrEmoji> const& glyph_run() const { return m_glyph_run; }
CSSPixelRect selection_rect(Gfx::Font const&) const;
bool contained_by_inline_node() const { return m_contained_by_inline_node; }
void set_contained_by_inline_node() { m_contained_by_inline_node = true; }
CSSPixels width() const { return m_size.width(); }
CSSPixels height() const { return m_size.height(); }
int text_index_at(CSSPixels) const;
private:
JS::NonnullGCPtr<Layout::Node const> m_layout_node;
CSSPixelPoint m_offset;
CSSPixelSize m_size;
CSSPixels m_baseline;
int m_start;
int m_length;
Painting::BorderRadiiData m_border_radii_data;
Vector<Gfx::DrawGlyphOrEmoji> m_glyph_run;
bool m_contained_by_inline_node { false };
};
}