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/*
* Copyright (C) 2003, 2006, 2007, 2008 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.
*
*/
#ifndef RootInlineBox_h
#define RootInlineBox_h
#include "BidiContext.h"
#include "InlineFlowBox.h"
namespace WebCore {
class EllipsisBox;
class HitTestResult;
struct BidiStatus;
struct GapRects;
class RootInlineBox : public InlineFlowBox {
public:
RootInlineBox(RenderObject* obj)
: InlineFlowBox(obj)
, m_lineBreakObj(0)
, m_lineBreakPos(0)
, m_lineTop(0)
, m_lineBottom(0)
{
}
virtual void destroy(RenderArena*);
virtual bool isRootInlineBox() const { return true; }
void detachEllipsisBox(RenderArena*);
RootInlineBox* nextRootBox() const { return static_cast<RootInlineBox*>(m_nextLineBox); }
RootInlineBox* prevRootBox() const { return static_cast<RootInlineBox*>(m_prevLineBox); }
virtual void adjustPosition(int dx, int dy);
int lineTop() const { return m_lineTop; }
int lineBottom() const { return m_lineBottom; }
int selectionTop() const;
int selectionBottom() const { return lineBottom(); }
int selectionHeight() const { return max(0, selectionBottom() - selectionTop()); }
virtual int verticallyAlignBoxes(int heightOfBlock);
void setLineTopBottomPositions(int top, int bottom);
virtual RenderLineBoxList* rendererLineBoxes() const;
#if ENABLE(SVG)
virtual void computePerCharacterLayoutInformation() { }
#endif
RenderObject* lineBreakObj() const { return m_lineBreakObj; }
BidiStatus lineBreakBidiStatus() const;
void setLineBreakInfo(RenderObject*, unsigned breakPos, const BidiStatus&);
unsigned lineBreakPos() const { return m_lineBreakPos; }
void setLineBreakPos(unsigned p) { m_lineBreakPos = p; }
int blockHeight() const { return m_blockHeight; }
void setBlockHeight(int h) { m_blockHeight = h; }
bool endsWithBreak() const { return m_endsWithBreak; }
void setEndsWithBreak(bool b) { m_endsWithBreak = b; }
void childRemoved(InlineBox* box);
bool canAccommodateEllipsis(bool ltr, int blockEdge, int lineBoxEdge, int ellipsisWidth);
void placeEllipsis(const AtomicString& ellipsisStr, bool ltr, int blockLeftEdge, int blockRightEdge, int ellipsisWidth, InlineBox* markupBox = 0);
virtual int placeEllipsisBox(bool ltr, int blockLeftEdge, int blockRightEdge, int ellipsisWidth, bool& foundBox);
EllipsisBox* ellipsisBox() const;
void paintEllipsisBox(RenderObject::PaintInfo&, int tx, int ty) const;
bool hitTestEllipsisBox(HitTestResult&, int x, int y, int tx, int ty, HitTestAction, bool);
virtual void clearTruncation();
#if PLATFORM(MAC)
void addHighlightOverflow();
void paintCustomHighlight(RenderObject::PaintInfo&, int tx, int ty, const AtomicString& highlightType);
#endif
virtual void paint(RenderObject::PaintInfo&, int tx, int ty);
virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int, int, int, int);
bool hasSelectedChildren() const { return m_hasSelectedChildren; }
void setHasSelectedChildren(bool);
virtual RenderObject::SelectionState selectionState();
InlineBox* firstSelectedBox();
InlineBox* lastSelectedBox();
GapRects fillLineSelectionGap(int selTop, int selHeight, RenderBlock* rootBlock, int blockX, int blockY,
int tx, int ty, const RenderObject::PaintInfo*);
RenderBlock* block() const;
InlineBox* closestLeafChildForXPos(int x, bool onlyEditableLeaves = false);
Vector<RenderBox*>& floats()
{
ASSERT(!isDirty());
if (!m_floats)
m_floats.set(new Vector<RenderBox*>());
return *m_floats;
}
Vector<RenderBox*>* floatsPtr() { ASSERT(!isDirty()); return m_floats.get(); }
virtual void extractLineBoxFromRenderObject();
virtual void attachLineBoxToRenderObject();
virtual void removeLineBoxFromRenderObject();
protected:
// Where this line ended. The exact object and the position within that object are stored so that
// we can create an InlineIterator beginning just after the end of this line.
RenderObject* m_lineBreakObj;
unsigned m_lineBreakPos;
RefPtr<BidiContext> m_lineBreakContext;
int m_lineTop;
int m_lineBottom;
// Floats hanging off the line are pushed into this vector during layout. It is only
// good for as long as the line has not been marked dirty.
OwnPtr<Vector<RenderBox*> > m_floats;
// The height of the block at the end of this line. This is where the next line starts.
int m_blockHeight;
WTF::Unicode::Direction m_lineBreakBidiStatusEor : 5;
WTF::Unicode::Direction m_lineBreakBidiStatusLastStrong : 5;
WTF::Unicode::Direction m_lineBreakBidiStatusLast : 5;
};
inline void RootInlineBox::setLineTopBottomPositions(int top, int bottom)
{
m_lineTop = top;
m_lineBottom = bottom;
}
} // namespace WebCore
#endif // RootInlineBox_h
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