text: /*
   * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
   *           (C) 2000 Antti Koivisto (koivisto@kde.org)
   *           (C) 2000 Dirk Mueller (mueller@kde.org)
   * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple 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.
   *
   */
  
  #pragma once
  
  #include "CSSValue.h"
  #include "FloatSize.h"
  //#include "Image.h"
  #include <wtf/RefCounted.h>
  #include <wtf/RefPtr.h>
  #include <wtf/TypeCasts.h>
  
  namespace WebCore {
  
  class CachedImage;
  class CachedResourceLoader;
  class CSSValue;
  class RenderElement;
  class RenderObject;
  struct ResourceLoaderOptions;
  
  typedef const void* WrappedImagePtr;
  
  class StyleImage : public RefCounted<StyleImage> {
  public:
      virtual ~StyleImage() = default;
  
      virtual bool operator==(const StyleImage& other) const = 0;
  
      virtual Ref<CSSValue> cssValue() const = 0;
  
      virtual bool canRender(const RenderElement*, float /*multiplier*/) const { return true; }
      virtual bool isPending() const = 0;
      virtual void load(CachedResourceLoader&, const ResourceLoaderOptions&) = 0;
      virtual bool isLoaded() const { return true; }
      virtual bool errorOccurred() const { return false; }
      virtual FloatSize imageSize(const RenderElement*, float multiplier) const = 0;
      virtual void computeIntrinsicDimensions(const RenderElement*, Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio) = 0;
      virtual bool imageHasRelativeWidth() const = 0;
      virtual bool imageHasRelativeHeight() const = 0;
      virtual bool usesImageContainerSize() const = 0;
      virtual void setContainerContextForRenderer(const RenderElement&, const FloatSize&, float) = 0;
      virtual void addClient(RenderElement*) = 0;
      virtual void removeClient(RenderElement*) = 0;
      //virtual RefPtr<Image> image(RenderElement*, const FloatSize&) const = 0;
      virtual WrappedImagePtr data() const = 0;
      virtual float imageScaleFactor() const { return 1; }
      virtual bool knownToBeOpaque(const RenderElement*) const = 0;
      virtual CachedImage* cachedImage() const { return 0; }
  
      ALWAYS_INLINE bool isCachedImage() const { return m_isCachedImage; }
      ALWAYS_INLINE bool isGeneratedImage() const { return m_isGeneratedImage; }
  
  protected:
      StyleImage()
          : m_isCachedImage(false)
          , m_isGeneratedImage(false)
      {
      }
      bool m_isCachedImage : 1;
      bool m_isGeneratedImage : 1;
  };
  
  } // namespace WebCore
  
  #define SPECIALIZE_TYPE_TRAITS_STYLE_IMAGE(ToClassName, predicate) \
  SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::ToClassName) \
      static bool isType(const WebCore::StyleImage& image) { return image.predicate(); } \
  SPECIALIZE_TYPE_TRAITS_END()
  