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/*
* Copyright (C) 2000 Lars Knoll (knoll@kde.org)
* Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All right reserved.
* Copyright (C) 2010 Google Inc. All rights reserved.
* Copyright (C) 2013 ChangSeok Oh <shivamidow@gmail.com>
* Copyright (C) 2013 Adobe Systems Inc. All right 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.
*
*/
#ifndef LineBreaker_h
#define LineBreaker_h
#include "InlineIterator.h"
#include "LineInfo.h"
#include "LineInlineHeaders.h"
#include "TextBreakIterator.h"
#include <wtf/Vector.h>
namespace WebCore {
class RenderText;
struct RenderTextInfo {
// Destruction of m_layout requires TextLayout to be a complete type, so the constructor and destructor are made non-inline to avoid compilation errors.
RenderTextInfo();
~RenderTextInfo();
RenderText* m_text;
OwnPtr<TextLayout> m_layout;
LazyLineBreakIterator m_lineBreakIterator;
const Font* m_font;
};
class LineBreaker {
public:
friend class BreakingContext;
LineBreaker(RenderBlockFlow& block)
: m_block(block)
{
reset();
}
InlineIterator nextLineBreak(InlineBidiResolver&, LineInfo&, RenderTextInfo&, FloatingObject* lastFloatFromPreviousLine, unsigned consecutiveHyphenatedLines, WordMeasurements&);
bool lineWasHyphenated() { return m_hyphenated; }
const Vector<RenderBox*>& positionedObjects() { return m_positionedObjects; }
EClear clear() { return m_clear; }
private:
void reset();
InlineIterator nextSegmentBreak(InlineBidiResolver&, LineInfo&, RenderTextInfo&, FloatingObject* lastFloatFromPreviousLine, unsigned consecutiveHyphenatedLines, WordMeasurements&);
void skipTrailingWhitespace(InlineIterator&, const LineInfo&);
void skipLeadingWhitespace(InlineBidiResolver&, LineInfo&, FloatingObject* lastFloatFromPreviousLine, LineWidth&);
FloatingObject* insertFloatingObject(RenderBox& floatBox) { return m_block.insertFloatingObject(floatBox); }
bool positionNewFloatOnLine(FloatingObject* newFloat, FloatingObject* lastFloatFromPreviousLine, LineInfo& lineInfo, LineWidth& width)
{
return m_block.positionNewFloatOnLine(newFloat, lastFloatFromPreviousLine, lineInfo, width);
}
RenderBlockFlow& m_block;
bool m_hyphenated;
EClear m_clear;
Vector<RenderBox*> m_positionedObjects;
};
}
#endif // LineBreaker_h
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