ladybird/Userland/Libraries/LibWeb/Layout/LineBox.h
Andreas Kling 9af966f87d LibWeb: Avoid unnecessary Vector copying when generating line boxes
Carry the same Vector<Gfx::DrawGlyphOrEmoji> all the way from the inline
level iterator to the final line box fragment.
2024-03-25 12:39:23 +01:00

53 lines
1.7 KiB
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Vector.h>
#include <LibWeb/Layout/LineBoxFragment.h>
namespace Web::Layout {
class LineBox {
public:
LineBox() = default;
CSSPixels width() const { return m_width; }
CSSPixels height() const { return m_height; }
CSSPixels bottom() const { return m_bottom; }
CSSPixels baseline() const { return m_baseline; }
void add_fragment(Node const& layout_node, int start, int length, CSSPixels leading_size, CSSPixels trailing_size, CSSPixels leading_margin, CSSPixels trailing_margin, CSSPixels content_width, CSSPixels content_height, CSSPixels border_box_top, CSSPixels border_box_bottom, Vector<Gfx::DrawGlyphOrEmoji> = {});
Vector<LineBoxFragment> const& fragments() const { return m_fragments; }
Vector<LineBoxFragment>& fragments() { return m_fragments; }
void trim_trailing_whitespace();
bool is_empty_or_ends_in_whitespace() const;
bool is_empty() const { return m_fragments.is_empty() && !m_has_break; }
AvailableSize original_available_width() const { return m_original_available_width; }
private:
friend class BlockContainer;
friend class InlineFormattingContext;
friend class LineBuilder;
Vector<LineBoxFragment> m_fragments;
CSSPixels m_width { 0 };
CSSPixels m_height { 0 };
CSSPixels m_bottom { 0 };
CSSPixels m_baseline { 0 };
// The amount of available width that was originally available when creating this line box. Used for text justification.
AvailableSize m_original_available_width { AvailableSize::make_indefinite() };
bool m_has_break { false };
bool m_has_forced_break { false };
};
}