blob: 661fd37c74a1830be4328fc401f576749b58b529 [file] [log] [blame]
/*
* Copyright (C) 2008 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CSSImageGeneratorValue_h
#define CSSImageGeneratorValue_h
#include "CSSValue.h"
#include "IntSizeHash.h"
#include <wtf/HashMap.h>
#include <wtf/HashCountedSet.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class Image;
class StyleGeneratedImage;
class RenderObject;
class CSSImageGeneratorValue : public CSSValue {
public:
virtual ~CSSImageGeneratorValue();
void addClient(RenderObject*, const IntSize&);
void removeClient(RenderObject*);
virtual Image* image(RenderObject*, const IntSize&) = 0;
StyleGeneratedImage* generatedImage();
virtual bool isFixedSize() const { return false; }
virtual IntSize fixedSize(const RenderObject*) { return IntSize(); }
protected:
CSSImageGeneratorValue();
Image* getImage(RenderObject*, const IntSize&);
void putImage(const IntSize&, PassRefPtr<Image>);
HashCountedSet<IntSize> m_sizes; // A count of how many times a given image size is in use.
HashMap<RenderObject*, IntSize> m_clients; // A map from RenderObjects to image sizes.
HashMap<IntSize, RefPtr<Image> > m_images; // A cache of Image objects by image size.
RefPtr<StyleGeneratedImage> m_image;
bool m_accessedImage;
private:
virtual bool isImageGeneratorValue() const { return true; }
};
} // namespace WebCore
#endif // CSSImageGeneratorValue_h