ladybird/Userland/Libraries/LibWeb/Layout/LineBox.h
Andreas Kling f2a917229a LibWeb: Support inline-level padding and border properly
Here's roughly how this works:

- InlineLevelIterator keeps a nesting stack of inline-level nodes with
  box model metrics.
- When entering a node with box model metrics, we add them to the
  current "leading metrics".
- When exiting a node with box model metrics, we add them to the
  current "trailing metrics".
- Pending leading metrics are consumed by the first fragment added
  to the line.
- Pending trailing metrics are consumed by the last fragment added
  to the line.

Like before, the position of a line box fragment is the top left of its
content box. However, fragments are placed horizontally along the line
with space inserted for padding and border.

InlineNode::paint() now expands the content rect as appropriate when
painting background and borders.

Note that margins and margin collapsing is not yet implemented.

This makes the eyes on ACID2 horizontally centered. :^)
2022-02-14 18:00:21 +01:00

41 lines
1.1 KiB
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/NonnullOwnPtrVector.h>
#include <AK/Vector.h>
#include <LibWeb/Layout/LineBoxFragment.h>
namespace Web::Layout {
class LineBox {
public:
LineBox() { }
float width() const { return m_width; }
void add_fragment(Node& layout_node, int start, int length, float leading_size, float trailing_size, float content_width, float content_height, LineBoxFragment::Type = LineBoxFragment::Type::Normal);
const NonnullOwnPtrVector<LineBoxFragment>& fragments() const { return m_fragments; }
NonnullOwnPtrVector<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(); }
bool ends_with_forced_line_break() const;
private:
friend class BlockContainer;
friend class InlineFormattingContext;
friend class LineBuilder;
NonnullOwnPtrVector<LineBoxFragment> m_fragments;
float m_width { 0 };
};
}