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1 /*
2  * Copyright (C) 2002 Lars Knoll (knoll@kde.org)
3  *           (C) 2002 Dirk Mueller (mueller@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 calcPrefWidths(int& minWidth, int& maxWidth);
39     virtual void layout();
40 
41 protected:
42     void fullRecalc();
43     void recalcColumn(int effCol);
44 
45     void calcPercentages() const;
totalPercent()46     int totalPercent() const
47     {
48         if (m_percentagesDirty)
49             calcPercentages();
50         return m_totalPercent;
51     }
52 
53     int calcEffectiveWidth();
54 
55     void insertSpanCell(RenderTableCell*);
56 
57     struct Layout {
LayoutLayout58         Layout()
59             : minWidth(0)
60             , maxWidth(0)
61             , effMinWidth(0)
62             , effMaxWidth(0)
63             , calcWidth(0)
64             , emptyCellsOnly(true) {}
65         Length width;
66         Length effWidth;
67         int minWidth;
68         int maxWidth;
69         int effMinWidth;
70         int effMaxWidth;
71         int calcWidth;
72         bool emptyCellsOnly;
73     };
74 
75     Vector<Layout, 4> m_layoutStruct;
76     Vector<RenderTableCell*, 4> m_spanCells;
77     bool m_hasPercent : 1;
78     mutable bool m_percentagesDirty : 1;
79     mutable bool m_effWidthDirty : 1;
80     mutable unsigned short m_totalPercent;
81 };
82 
83 } // namespace WebCore
84 
85 #endif // AutoTableLayout_h
86