text: /*
   * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
   * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
   *
   * 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 SVGTransform_h
  #define SVGTransform_h
  
  #if ENABLE(SVG)
  #include "FloatPoint.h"
  #include "SVGMatrix.h"
  
  namespace WebCore {
  
  class FloatSize;
  
  class SVGTransform {
  public:
      enum SVGTransformType {
          SVG_TRANSFORM_UNKNOWN = 0,
          SVG_TRANSFORM_MATRIX = 1,
          SVG_TRANSFORM_TRANSLATE = 2,
          SVG_TRANSFORM_SCALE = 3,
          SVG_TRANSFORM_ROTATE = 4,
          SVG_TRANSFORM_SKEWX = 5,
          SVG_TRANSFORM_SKEWY = 6
      };
   
      SVGTransform();
      SVGTransform(SVGTransformType);
      explicit SVGTransform(const AffineTransform&);
  
      SVGTransformType type() const { return m_type; }
  
      SVGMatrix& svgMatrix() { return static_cast<SVGMatrix&>(m_matrix); }
      AffineTransform matrix() const { return m_matrix; }
      void updateMatrix();
  
      float angle() const { return m_angle; }
      FloatPoint rotationCenter() const { return m_center; }
  
      void setMatrix(const AffineTransform&);
      void setTranslate(float tx, float ty);
      void setScale(float sx, float sy);
      void setRotate(float angle, float cx, float cy);
      void setSkewX(float angle);
      void setSkewY(float angle);
      
      // Internal use only (animation system)
      FloatPoint translate() const;
      FloatSize scale() const;
  
      bool isValid() const { return m_type != SVG_TRANSFORM_UNKNOWN; }
      String valueAsString() const;
  
  private:
      friend bool operator==(const SVGTransform& a, const SVGTransform& b);
  
      SVGTransformType m_type;
      float m_angle;
      FloatPoint m_center;
      AffineTransform m_matrix;
  };
  
  inline bool operator==(const SVGTransform& a, const SVGTransform& b)
  {
      return a.m_type == b.m_type && a.m_angle == b.m_angle && a.m_matrix == b.m_matrix;
  }
  
  inline bool operator!=(const SVGTransform& a, const SVGTransform& b)
  {
      return !(a == b);
  }
  
  } // namespace WebCore
  
  #endif // ENABLE(SVG)
  #endif
  