WebCore/GapRects.h

   1 /*
   2     Copyright (C) 2005, 2006 Apple Inc. All rights reserved.
   3
   4     This library is free software; you can redistribute it and/or
   5     modify it under the terms of the GNU Library General Public
   6     License as published by the Free Software Foundation; either
   7     version 2 of the License, or (at your option) any later version.
   8
   9     This library is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12     Library General Public License for more details.
  13
  14     You should have received a copy of the GNU Library General Public License
  15     along with this library; see the file COPYING.LIB.  If not, write to
  16     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17     Boston, MA 02110-1301, USA.
  18
  19
  20     Some useful definitions needed for laying out elements
  21 */
  22
  23 #ifndef GapRects_h
  24 #define GapRects_h
  25
  26 #include "IntRect.h"
  27
  28 namespace WebCore {
  29
  30     struct GapRects {
  31         const IntRect& left() const { return m_left; }
  32         const IntRect& center() const { return m_center; }
  33         const IntRect& right() const { return m_right; }
  34
  35         void uniteLeft(const IntRect& r) { m_left.unite(r); }
  36         void uniteCenter(const IntRect& r) { m_center.unite(r); }
  37         void uniteRight(const IntRect& r) { m_right.unite(r); }
  38         void unite(const GapRects& o) { uniteLeft(o.left()); uniteCenter(o.center()); uniteRight(o.right()); }
  39
  40         operator IntRect() const
  41         {
  42             IntRect result = m_left;
  43             result.unite(m_center);
  44             result.unite(m_right);
  45             return result;
  46         }
  47
  48         bool operator==(const GapRects& other)
  49         {
  50             return m_left == other.left() && m_center == other.center() && m_right == other.right();
  51         }
  52         bool operator!=(const GapRects& other) { return !(*this == other); }
  53
  54     private:
  55         IntRect m_left;
  56         IntRect m_center;
  57         IntRect m_right;
  58     };
  59
  60 } // namespace WebCore
  61
  62 #endif // GapRects_h