text: /*
   * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
   * 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.
   */
  
  #ifndef SourceAlpha_h
  #define SourceAlpha_h
  
  #include "platform/graphics/filters/FilterEffect.h"
  
  namespace blink {
  
  class PLATFORM_EXPORT SourceAlpha : public FilterEffect {
  public:
      static PassRefPtrWillBeRawPtr<SourceAlpha> create(Filter*);
  
      static const AtomicString& effectName();
  
      virtual FloatRect determineAbsolutePaintRect(const FloatRect& requestedRect) override;
  
      virtual FilterEffectType filterEffectType() const override { return FilterEffectTypeSourceInput; }
  
      virtual TextStream& externalRepresentation(TextStream&, int indention) const override;
      virtual PassRefPtr<SkImageFilter> createImageFilter(SkiaImageFilterBuilder*) override;
  
  private:
      SourceAlpha(Filter* filter)
          : FilterEffect(filter)
      {
      }
  };
  
  } // namespace blink
  
  #endif // SourceAlpha_h
  