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/*
* Copyright (C) 2000 Lars Knoll (knoll@kde.org)
* Copyright (C) 2013 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#pragma once
#include "RenderBoxModelObject.h"
namespace WebCore {
class HTMLElement;
class Position;
class RenderLineBreak final : public RenderBoxModelObject {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED(RenderLineBreak);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(RenderLineBreak);
public:
RenderLineBreak(HTMLElement&, RenderStyle&&);
virtual ~RenderLineBreak();
// FIXME: The lies here keep render tree dump based test results unchanged.
ASCIILiteral renderName() const final { return isWBR() ? "RenderWordBreak"_s : "RenderBR"_s; }
IntRect linesBoundingBox() const;
void boundingRects(Vector<LayoutRect>&, const LayoutPoint& accumulatedOffset) const final;
void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed = nullptr) const final;
#if PLATFORM(IOS_FAMILY)
void collectSelectionGeometries(Vector<SelectionGeometry>&, unsigned startOffset = 0, unsigned endOffset = std::numeric_limits<unsigned>::max()) final;
#endif
bool isBR() const { return !hasWBRLineBreakFlag(); }
bool isWBR() const { return hasWBRLineBreakFlag(); }
bool isLineBreakOpportunity() const { return isWBR(); }
private:
void node() const = delete;
bool canHaveChildren() const final { return false; }
void paint(PaintInfo&, const LayoutPoint&) final { }
VisiblePosition positionForPoint(const LayoutPoint&, HitTestSource, const RenderFragmentContainer*) final;
int caretMinOffset() const final;
int caretMaxOffset() const final;
bool canBeSelectionLeaf() const final;
LayoutUnit lineHeight(bool firstLine, LineDirectionMode, LinePositionMode) const final;
LayoutUnit baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode) const final;
LayoutUnit marginTop() const final { return 0; }
LayoutUnit marginBottom() const final { return 0; }
LayoutUnit marginLeft() const final { return 0; }
LayoutUnit marginRight() const final { return 0; }
LayoutUnit marginBefore(const WritingMode) const final { return 0; }
LayoutUnit marginAfter(const WritingMode) const final { return 0; }
LayoutUnit marginStart(const WritingMode) const final { return 0; }
LayoutUnit marginEnd(const WritingMode) const final { return 0; }
LayoutUnit offsetWidth() const final { return linesBoundingBox().width(); }
LayoutUnit offsetHeight() const final { return linesBoundingBox().height(); }
LayoutRect borderBoundingBox() const final { return LayoutRect(LayoutPoint(), linesBoundingBox().size()); }
LayoutRect frameRectForStickyPositioning() const final { ASSERT_NOT_REACHED(); return { }; }
RepaintRects localRectsForRepaint(RepaintOutlineBounds) const final { return { }; }
void updateFromStyle() final;
bool requiresLayer() const final { return false; }
mutable std::optional<LayoutUnit> m_cachedLineHeight { };
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderLineBreak, isRenderLineBreak())
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