WebCore/AutoTableLayout.h

   1 /*
   2  * This file is part of the HTML rendering engine for KDE.
   3  *
   4  * Copyright (C) 2002 Lars Knoll (knoll@kde.org)
   5  *           (C) 2002 Dirk Mueller (mueller@kde.org)
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Library General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Library General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Library General Public License
  18  * along with this library; see the file COPYING.LIB.  If not, write to
  19  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20  * Boston, MA 02110-1301, USA.
  21  */
  22
  23 #ifndef AutoTableLayout_h
  24 #define AutoTableLayout_h
  25
  26 #include "Length.h"
  27 #include "TableLayout.h"
  28 #include <wtf/Vector.h>
  29
  30 namespace WebCore {
  31
  32 class RenderTable;
  33 class RenderTableCell;
  34
  35 class AutoTableLayout : public TableLayout {
  36 public:
  37     AutoTableLayout(RenderTable*);
  38     ~AutoTableLayout();
  39
  40     virtual void calcPrefWidths(int& minWidth, int& maxWidth);
  41     virtual void layout();
  42
  43 protected:
  44     void fullRecalc();
  45     void recalcColumn(int effCol);
  46
  47     void calcPercentages() const;
  48     int totalPercent() const
  49     {
  50         if (m_percentagesDirty)
  51             calcPercentages();
  52         return m_totalPercent;
  53     }
  54
  55     int calcEffectiveWidth();
  56
  57     void insertSpanCell(RenderTableCell*);
  58
  59     struct Layout {
  60         Layout()
  61             : minWidth(0)
  62             , maxWidth(0)
  63             , effMinWidth(0)
  64             , effMaxWidth(0)
  65             , calcWidth(0)
  66             , emptyCellsOnly(true) {}
  67         Length width;
  68         Length effWidth;
  69         int minWidth;
  70         int maxWidth;
  71         int effMinWidth;
  72         int effMaxWidth;
  73         int calcWidth;
  74         bool emptyCellsOnly;
  75     };
  76
  77     Vector<Layout, 4> m_layoutStruct;
  78     Vector<RenderTableCell*, 4> m_spanCells;
  79     bool m_hasPercent : 1;
  80     mutable bool m_percentagesDirty : 1;
  81     mutable bool m_effWidthDirty : 1;
  82     mutable unsigned short m_totalPercent;
  83 };
  84
  85 } // namespace WebCore
  86
  87 #endif // AutoTableLayout_h