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26 #ifndef CSSImageGeneratorValue_h
27 #define CSSImageGeneratorValue_h
30 #include "IntSizeHash.h"
31 #include <wtf/HashMap.h>
32 #include <wtf/HashCountedSet.h>
33 #include <wtf/RefPtr.h>
38 class StyleGeneratedImage;
41 class CSSImageGeneratorValue : public CSSValue {
43 virtual ~CSSImageGeneratorValue();
45 void addClient(RenderObject*, const IntSize&);
46 void removeClient(RenderObject*);
47 virtual Image* image(RenderObject*, const IntSize&) = 0;
49 StyleGeneratedImage* generatedImage();
51 virtual bool isFixedSize() const { return false; }
52 virtual IntSize fixedSize(const RenderObject*) { return IntSize(); }
55 CSSImageGeneratorValue();
57 Image* getImage(RenderObject*, const IntSize&);
58 void putImage(const IntSize&, PassRefPtr<Image>);
60 typedef pair<IntSize, int> SizeCountPair;
61 typedef HashMap<RenderObject*, SizeCountPair> RenderObjectSizeCountMap;
63 HashCountedSet<IntSize> m_sizes; // A count of how many times a given image size is in use.
64 RenderObjectSizeCountMap m_clients; // A map from RenderObjects (with entry count) to image sizes.
65 HashMap<IntSize, RefPtr<Image> > m_images; // A cache of Image objects by image size.
67 RefPtr<StyleGeneratedImage> m_image;
71 virtual bool isImageGeneratorValue() const { return true; }
74 } // namespace WebCore
76 #endif // CSSImageGeneratorValue_h