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 "core/rendering/TableLayout.h"
25#include "platform/LayoutUnit.h"
26#include "platform/Length.h"
27#include "wtf/Vector.h"
28
29namespace blink {
30
31class RenderTable;
32class RenderTableCell;
33
34class AutoTableLayout FINAL : public TableLayout {
35public:
36    AutoTableLayout(RenderTable*);
37    virtual ~AutoTableLayout();
38
39    virtual void computeIntrinsicLogicalWidths(LayoutUnit& minWidth, LayoutUnit& maxWidth) OVERRIDE;
40    virtual void applyPreferredLogicalWidthQuirks(LayoutUnit& minWidth, LayoutUnit& maxWidth) const OVERRIDE;
41    virtual void layout() OVERRIDE;
42    virtual void willChangeTableLayout() OVERRIDE { }
43
44private:
45    void fullRecalc();
46    void recalcColumn(unsigned effCol);
47
48    int calcEffectiveLogicalWidth();
49
50    void insertSpanCell(RenderTableCell*);
51
52    struct Layout {
53        Layout()
54            : minLogicalWidth(0)
55            , maxLogicalWidth(0)
56            , effectiveMinLogicalWidth(0)
57            , effectiveMaxLogicalWidth(0)
58            , computedLogicalWidth(0)
59            , emptyCellsOnly(true)
60        {
61        }
62
63        Length logicalWidth;
64        Length effectiveLogicalWidth;
65        int minLogicalWidth;
66        int maxLogicalWidth;
67        int effectiveMinLogicalWidth;
68        int effectiveMaxLogicalWidth;
69        int computedLogicalWidth;
70        bool emptyCellsOnly;
71    };
72
73    Vector<Layout, 4> m_layoutStruct;
74    Vector<RenderTableCell*, 4> m_spanCells;
75    bool m_hasPercent : 1;
76    mutable bool m_effectiveLogicalWidthDirty : 1;
77};
78
79} // namespace blink
80
81#endif // AutoTableLayout_h
82