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      1 /*
      2  * Copyright (C) 2000 Lars Knoll (knoll (at) kde.org)
      3  *           (C) 2000 Antti Koivisto (koivisto (at) kde.org)
      4  *           (C) 2000 Dirk Mueller (mueller (at) kde.org)
      5  * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
      6  * Copyright (C) 2006 Graham Dennis (graham.dennis (at) gmail.com)
      7  *
      8  * This library is free software; you can redistribute it and/or
      9  * modify it under the terms of the GNU Library General Public
     10  * License as published by the Free Software Foundation; either
     11  * version 2 of the License, or (at your option) any later version.
     12  *
     13  * This library is distributed in the hope that it will be useful,
     14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     16  * Library General Public License for more details.
     17  *
     18  * You should have received a copy of the GNU Library General Public License
     19  * along with this library; see the file COPYING.LIB.  If not, write to
     20  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     21  * Boston, MA 02110-1301, USA.
     22  *
     23  */
     24 
     25 #ifndef CollapsedBorderValue_h
     26 #define CollapsedBorderValue_h
     27 
     28 #include "BorderValue.h"
     29 
     30 namespace WebCore {
     31 
     32 class CollapsedBorderValue {
     33 friend class RenderStyle;
     34 public:
     35     CollapsedBorderValue()
     36         : m_border(0)
     37         , m_precedence(BOFF)
     38     {
     39     }
     40 
     41     CollapsedBorderValue(const BorderValue* b, Color c, EBorderPrecedence p)
     42         : m_border(b)
     43         , m_borderColor(c)
     44         , m_precedence(p)
     45     {
     46     }
     47 
     48     int width() const { return m_border && m_border->nonZero() ? m_border->width() : 0; }
     49     EBorderStyle style() const { return m_border ? m_border->style() : BHIDDEN; }
     50     bool exists() const { return m_border; }
     51     const Color& color() const { return m_borderColor; }
     52     bool isTransparent() const { return m_border ? m_border->isTransparent() : true; }
     53     EBorderPrecedence precedence() const { return m_precedence; }
     54 
     55     bool operator==(const CollapsedBorderValue& o) const
     56     {
     57         if (!m_border)
     58             return !o.m_border;
     59         if (!o.m_border)
     60             return false;
     61         return *m_border == *o.m_border && m_borderColor == o.m_borderColor && m_precedence == o.m_precedence;
     62     }
     63 
     64 private:
     65     const BorderValue* m_border;
     66     Color m_borderColor;
     67     EBorderPrecedence m_precedence;
     68 };
     69 
     70 } // namespace WebCore
     71 
     72 #endif // CollapsedBorderValue_h
     73