WebCore/rendering/RenderTableCell.h

/*
 * 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, 2007 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 RenderTableCell_h
#define RenderTableCell_h

#include "RenderTableSection.h"

namespace WebCore {

class RenderTableCell : public RenderBlock {
public:
    RenderTableCell(Node*);

    virtual const char* renderName() const { return "RenderTableCell"; }

    virtual bool isTableCell() const { return true; }

    virtual void destroy();

    // FIXME: need to implement cellIndex
    int cellIndex() const { return 0; }
    void setCellIndex(int) { }

    int colSpan() const { return m_columnSpan; }
    void setColSpan(int c) { m_columnSpan = c; }

    int rowSpan() const { return m_rowSpan; }
    void setRowSpan(int r) { m_rowSpan = r; }

    int col() const { return m_column; }
    void setCol(int col) { m_column = col; }
    int row() const { return m_row; }
    void setRow(int row) { m_row = row; }

    RenderTableSection* section() const { return static_cast<RenderTableSection*>(parent()->parent()); }
    RenderTable* table() const { return static_cast<RenderTable*>(parent()->parent()->parent()); }

    Length styleOrColWidth() const;

    virtual bool requiresLayer();

    virtual void calcPrefWidths();
    virtual void calcWidth();
    virtual void setWidth(int);
    virtual void setStyle(RenderStyle*);

    virtual bool expandsToEncloseOverhangingFloats() const { return true; }

    int borderLeft() const;
    int borderRight() const;
    int borderTop() const;
    int borderBottom() const;

    int borderHalfLeft(bool outer) const;
    int borderHalfRight(bool outer) const;
    int borderHalfTop(bool outer) const;
    int borderHalfBottom(bool outer) const;

    CollapsedBorderValue collapsedLeftBorder(bool rtl) const;
    CollapsedBorderValue collapsedRightBorder(bool rtl) const;
    CollapsedBorderValue collapsedTopBorder() const;
    CollapsedBorderValue collapsedBottomBorder() const;

    typedef Vector<CollapsedBorderValue, 100> CollapsedBorderStyles;
    void collectBorderStyles(CollapsedBorderStyles&) const;
    static void sortBorderStyles(CollapsedBorderStyles&);

    virtual void updateFromElement();

    virtual void layout();

    virtual void paint(PaintInfo&, int tx, int ty);
    virtual void paintBoxDecorations(PaintInfo&, int tx, int ty);
    void paintCollapsedBorder(GraphicsContext*, int x, int y, int w, int h);
    void paintBackgroundsBehindCell(PaintInfo&, int tx, int ty, RenderObject* backgroundObject);

    // Lie about position to outside observers.
    virtual int yPos() const { return m_y + m_topExtra; }

    virtual IntRect absoluteClippedOverflowRect();
    virtual void computeAbsoluteRepaintRect(IntRect&, bool fixed = false);
    virtual bool absolutePosition(int& x, int& y, bool fixed = false) const;

    virtual short baselinePosition(bool firstLine = false, bool isRootLineBox = false) const;

    void setCellTopExtra(int p) { m_topExtra = p; }
    void setCellBottomExtra(int p) { m_bottomExtra = p; }

    virtual int borderTopExtra() const { return m_topExtra; }
    virtual int borderBottomExtra() const { return m_bottomExtra; }

#ifndef NDEBUG
    virtual void dump(TextStream*, DeprecatedString ind = "") const;
#endif

protected:
    int m_row;
    int m_column;
    int m_rowSpan;
    int m_columnSpan;
    int m_topExtra : 31;
    int m_bottomExtra : 31;
    bool m_widthChanged : 1;
    int m_percentageHeight;
};

} // namespace WebCore

#endif // RenderTableCell_h