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26 #ifndef CSSImageGeneratorValue_h
27 #define CSSImageGeneratorValue_h
29 #include "core/css/CSSValue.h"
30 #include "platform/geometry/IntSizeHash.h"
31 #include "wtf/HashCountedSet.h"
32 #include "wtf/RefPtr.h"
36 class ResourceFetcher;
42 SizeAndCount(IntSize newSize = IntSize(), int newCount = 0)
52 typedef HashMap<const RenderObject*, SizeAndCount> RenderObjectSizeCountMap;
54 class CSSImageGeneratorValue : public CSSValue {
56 ~CSSImageGeneratorValue();
58 void addClient(RenderObject*, const IntSize&);
59 void removeClient(RenderObject*);
60 PassRefPtr<Image> image(RenderObject*, const IntSize&);
62 bool isFixedSize() const;
63 IntSize fixedSize(const RenderObject*);
65 bool isPending() const;
66 bool knownToBeOpaque(const RenderObject*) const;
68 void loadSubimages(ResourceFetcher*);
70 void traceAfterDispatch(Visitor* visitor) { CSSValue::traceAfterDispatch(visitor); }
73 explicit CSSImageGeneratorValue(ClassType);
75 Image* getImage(RenderObject*, const IntSize&);
76 void putImage(const IntSize&, PassRefPtr<Image>);
77 const RenderObjectSizeCountMap& clients() const { return m_clients; }
79 HashCountedSet<IntSize> m_sizes; // A count of how many times a given image size is in use.
80 RenderObjectSizeCountMap m_clients; // A map from RenderObjects (with entry count) to image sizes.
81 HashMap<IntSize, RefPtr<Image> > m_images; // A cache of Image objects by image size.
84 DEFINE_CSS_VALUE_TYPE_CASTS(CSSImageGeneratorValue, isImageGeneratorValue());
86 } // namespace WebCore
88 #endif // CSSImageGeneratorValue_h