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