third_party/WebKit/Source/core/layout/TableLayoutAlgorithm.h

   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 TableLayoutAlgorithm_h
  22 #define TableLayoutAlgorithm_h
  23
  24 #include "wtf/FastAllocBase.h"
  25 #include "wtf/Noncopyable.h"
  26
  27 namespace blink {
  28
  29 class LayoutUnit;
  30 class LayoutTable;
  31
  32 class TableLayoutAlgorithm {
  33     WTF_MAKE_NONCOPYABLE(TableLayoutAlgorithm); WTF_MAKE_FAST_ALLOCATED(TableLayoutAlgorithm);
  34 public:
  35     explicit TableLayoutAlgorithm(LayoutTable* table)
  36         : m_table(table)
  37     {
  38     }
  39
  40     virtual ~TableLayoutAlgorithm() { }
  41
  42     virtual void computeIntrinsicLogicalWidths(LayoutUnit& minWidth, LayoutUnit& maxWidth) = 0;
  43     virtual void applyPreferredLogicalWidthQuirks(LayoutUnit& minWidth, LayoutUnit& maxWidth) const = 0;
  44     virtual void layout() = 0;
  45     virtual void willChangeTableLayout() = 0;
  46
  47 protected:
  48     // FIXME: Once we enable SATURATED_LAYOUT_ARITHMETHIC, this should just be LayoutUnit::nearlyMax().
  49     // Until then though, using nearlyMax causes overflow in some tests, so we just pick a large number.
  50     const static int tableMaxWidth = 1000000;
  51
  52     LayoutTable* m_table;
  53 };
  54
  55 } // namespace blink
  56
  57 #endif // TableLayoutAlgorithm_h