text: /*
   * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
   * Copyright (C) Research In Motion Limited 2010. All rights reserved.
   * Copyright (C) 2013 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.
   */
  
  #include "config.h"
  #include "SVGFilter.h"
  
  namespace WebCore {
  
  SVGFilter::SVGFilter(const AffineTransform& absoluteTransform, const FloatRect& absoluteSourceDrawingRegion, const FloatRect& targetBoundingBox, const FloatRect& filterRegion, bool effectBBoxMode)
      : Filter(absoluteTransform)
      , m_absoluteSourceDrawingRegion(absoluteSourceDrawingRegion)
      , m_targetBoundingBox(targetBoundingBox)
      , m_filterRegion(filterRegion)
      , m_effectBBoxMode(effectBBoxMode)
  {
      m_absoluteFilterRegion = absoluteTransform.mapRect(filterRegion);
  }
  
  FloatSize SVGFilter::scaledByFilterResolution(FloatSize size) const
  {
      if (m_effectBBoxMode)
          size = size * m_targetBoundingBox.size();
  
      return Filter::scaledByFilterResolution(size) * m_absoluteFilterRegion.size() / m_filterRegion.size();
  }
  
  Ref<SVGFilter> SVGFilter::create(const AffineTransform& absoluteTransform, const FloatRect& absoluteSourceDrawingRegion, const FloatRect& targetBoundingBox, const FloatRect& filterRegion, bool effectBBoxMode)
  {
      return adoptRef(*new SVGFilter(absoluteTransform, absoluteSourceDrawingRegion, targetBoundingBox, filterRegion, effectBBoxMode));
  }
  
  } // namespace WebCore
  