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/*
* Copyright (C) 1997 Martin Jones (mjones@kde.org)
* (C) 1997 Torben Weis (weis@kde.org)
* (C) 1998 Waldo Bastian (bastian@kde.org)
* (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2003, 2004, 2005, 2006, 2009 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 RenderTableSection_h
#define RenderTableSection_h
#include "RenderTable.h"
#include <wtf/Vector.h>
namespace WebCore {
enum CollapsedBorderSide {
CBSBefore,
CBSAfter,
CBSStart,
CBSEnd
};
class RenderTableCell;
class RenderTableRow;
class RenderTableSection : public RenderBox {
public:
RenderTableSection(Node*);
virtual ~RenderTableSection();
const RenderObjectChildList* children() const { return &m_children; }
RenderObjectChildList* children() { return &m_children; }
virtual void addChild(RenderObject* child, RenderObject* beforeChild = 0);
virtual LayoutUnit firstLineBoxBaseline() const;
void addCell(RenderTableCell*, RenderTableRow* row);
void setCellLogicalWidths();
int calcRowLogicalHeight();
int layoutRows(int logicalHeight);
RenderTable* table() const { return toRenderTable(parent()); }
struct CellStruct {
Vector<RenderTableCell*, 1> cells;
bool inColSpan; // true for columns after the first in a colspan
CellStruct()
: inColSpan(false)
{
}
RenderTableCell* primaryCell()
{
return hasCells() ? cells[cells.size() - 1] : 0;
}
const RenderTableCell* primaryCell() const
{
return hasCells() ? cells[cells.size() - 1] : 0;
}
bool hasCells() const { return cells.size() > 0; }
};
typedef Vector<CellStruct> Row;
struct RowStruct {
RowStruct()
: rowRenderer(0)
, baseline()
{
}
Row row;
RenderTableRow* rowRenderer;
LayoutUnit baseline;
Length logicalHeight;
};
CellStruct& cellAt(unsigned row, unsigned col) { return m_grid[row].row[col]; }
const CellStruct& cellAt(unsigned row, unsigned col) const { return m_grid[row].row[col]; }
RenderTableCell* primaryCellAt(unsigned row, unsigned col)
{
CellStruct& c = m_grid[row].row[col];
return c.primaryCell();
}
void appendColumn(unsigned pos);
void splitColumn(unsigned pos, unsigned first);
int calcOuterBorderBefore() const;
int calcOuterBorderAfter() const;
int calcOuterBorderStart() const;
int calcOuterBorderEnd() const;
void recalcOuterBorder();
int outerBorderBefore() const { return m_outerBorderBefore; }
int outerBorderAfter() const { return m_outerBorderAfter; }
int outerBorderStart() const { return m_outerBorderStart; }
int outerBorderEnd() const { return m_outerBorderEnd; }
unsigned numRows() const { return m_grid.size(); }
unsigned numColumns() const;
void recalcCells();
void recalcCellsIfNeeded()
{
if (m_needsCellRecalc)
recalcCells();
}
bool needsCellRecalc() const { return m_needsCellRecalc; }
void setNeedsCellRecalc();
LayoutUnit getBaseline(unsigned row) { return m_grid[row].baseline; }
void rowLogicalHeightChanged(unsigned rowIndex);
unsigned rowIndexForRenderer(const RenderTableRow*) const;
void removeCachedCollapsedBorders(const RenderTableCell*);
void setCachedCollapsedBorder(const RenderTableCell*, CollapsedBorderSide, CollapsedBorderValue);
CollapsedBorderValue& cachedCollapsedBorder(const RenderTableCell*, CollapsedBorderSide);
protected:
virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
private:
virtual RenderObjectChildList* virtualChildren() { return children(); }
virtual const RenderObjectChildList* virtualChildren() const { return children(); }
virtual const char* renderName() const { return isAnonymous() ? "RenderTableSection (anonymous)" : "RenderTableSection"; }
virtual bool isTableSection() const { return true; }
virtual void willBeDestroyed();
virtual void layout();
virtual void removeChild(RenderObject* oldChild);
virtual void paint(PaintInfo&, const LayoutPoint&);
virtual void paintCell(RenderTableCell*, PaintInfo&, const LayoutPoint&);
virtual void paintObject(PaintInfo&, const LayoutPoint&);
virtual void imageChanged(WrappedImagePtr, const IntRect* = 0);
virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const LayoutPoint& pointInContainer, const LayoutPoint& accumulatedOffset, HitTestAction);
void ensureRows(unsigned);
bool hasOverflowingCell() const { return m_overflowingCells.size() || m_forceSlowPaintPathWithOverflowingCell; }
RenderObjectChildList m_children;
Vector<RowStruct> m_grid;
Vector<int> m_rowPos;
// the current insertion position
unsigned m_cCol;
unsigned m_cRow;
int m_outerBorderStart;
int m_outerBorderEnd;
int m_outerBorderBefore;
int m_outerBorderAfter;
bool m_needsCellRecalc;
// This HashSet holds the overflowing cells for faster painting.
// If we have more than gMaxAllowedOverflowingCellRatio * total cells, it will be empty
// and m_forceSlowPaintPathWithOverflowingCell will be set to save memory.
HashSet<RenderTableCell*> m_overflowingCells;
bool m_forceSlowPaintPathWithOverflowingCell;
bool m_hasMultipleCellLevels;
// This map holds the collapsed border values for cells with collapsed borders.
// It is held at RenderTableSection level to spare memory consumption by table cells.
HashMap<pair<const RenderTableCell*, int>, CollapsedBorderValue > m_cellsCollapsedBorders;
};
inline RenderTableSection* toRenderTableSection(RenderObject* object)
{
ASSERT(!object || object->isTableSection());
return static_cast<RenderTableSection*>(object);
}
inline const RenderTableSection* toRenderTableSection(const RenderObject* object)
{
ASSERT(!object || object->isTableSection());
return static_cast<const RenderTableSection*>(object);
}
// This will catch anyone doing an unnecessary cast.
void toRenderTableSection(const RenderTableSection*);
} // namespace WebCore
#endif // RenderTableSection_h
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