text: /*
      Copyright (C) 1999 Lars Knoll (knoll@kde.org)
      Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
      Copyright (c) 2012, Google Inc. All rights reserved.
  
      This library is free software; you can redistribute it and/or
      modify it under the terms of the GNU Library General Public
      License as published by the Free Software Foundation; either
      version 2 of the License, or (at your option) any later version.
  
      This library is distributed in the hope that it will be useful,
      but WITHOUT ANY WARRANTY; without even the implied warranty of
      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      Library General Public License for more details.
  
      You should have received a copy of the GNU Library General Public License
      along with this library; see the file COPYING.LIB.  If not, write to
      the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
      Boston, MA 02110-1301, USA.
  */
  
  #ifndef LengthBox_h
  #define LengthBox_h
  
  #include "platform/Length.h"
  #include "platform/PlatformExport.h"
  #include "platform/text/TextDirection.h"
  #include "platform/text/WritingMode.h"
  
  namespace WebCore {
  
  class RenderStyle;
  
  class PLATFORM_EXPORT LengthBox {
  public:
      LengthBox()
      {
      }
  
      LengthBox(LengthType t)
          : m_left(t)
          , m_right(t)
          , m_top(t)
          , m_bottom(t)
      {
      }
  
      LengthBox(int v)
          : m_left(Length(v, Fixed))
          , m_right(Length(v, Fixed))
          , m_top(Length(v, Fixed))
          , m_bottom(Length(v, Fixed))
      {
      }
  
      LengthBox(const Length& t, const Length& r, const Length& b, const Length& l)
          : m_left(l)
          , m_right(r)
          , m_top(t)
          , m_bottom(b)
      {
      }
  
      LengthBox(int t, int r, int b, int l)
          : m_left(Length(l, Fixed))
          , m_right(Length(r, Fixed))
          , m_top(Length(t, Fixed))
          , m_bottom(Length(b, Fixed))
      {
      }
  
      const Length& left() const { return m_left; }
      const Length& right() const { return m_right; }
      const Length& top() const { return m_top; }
      const Length& bottom() const { return m_bottom; }
  
      const Length& logicalLeft(WritingMode) const;
      const Length& logicalRight(WritingMode) const;
  
      const Length& before(WritingMode) const;
      const Length& after(WritingMode) const;
      const Length& start(WritingMode, TextDirection) const;
      const Length& end(WritingMode, TextDirection) const;
  
      bool operator==(const LengthBox& o) const
      {
          return m_left == o.m_left && m_right == o.m_right && m_top == o.m_top && m_bottom == o.m_bottom;
      }
  
      bool operator!=(const LengthBox& o) const
      {
          return !(*this == o);
      }
  
      bool nonZero() const
      {
          return !(m_left.isZero() && m_right.isZero() && m_top.isZero() && m_bottom.isZero());
      }
  
      // Must be public for SET_VAR in RenderStyle.h
      Length m_left;
      Length m_right;
      Length m_top;
      Length m_bottom;
  };
  
  } // namespace WebCore
  
  #endif // LengthBox_h
  