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26 #ifndef CSSCrossfadeValue_h
27 #define CSSCrossfadeValue_h
29 #include "core/css/CSSImageGeneratorValue.h"
30 #include "core/css/CSSPrimitiveValue.h"
31 #include "core/fetch/ImageResource.h"
32 #include "core/fetch/ImageResourceClient.h"
33 #include "core/fetch/ResourcePtr.h"
34 #include "platform/graphics/Image.h"
39 class CrossfadeSubimageObserverProxy;
43 class CSSCrossfadeValue : public CSSImageGeneratorValue {
44 friend class CrossfadeSubimageObserverProxy;
46 static PassRefPtrWillBeRawPtr<CSSCrossfadeValue> create(PassRefPtrWillBeRawPtr<CSSValue> fromValue, PassRefPtrWillBeRawPtr<CSSValue> toValue)
48 return adoptRefWillBeNoop(new CSSCrossfadeValue(fromValue, toValue));
53 String customCSSText() const;
55 PassRefPtr<Image> image(RenderObject*, const IntSize&);
56 bool isFixedSize() const { return true; }
57 IntSize fixedSize(const RenderObject*);
59 bool isPending() const;
60 bool knownToBeOpaque(const RenderObject*) const;
62 void loadSubimages(ResourceFetcher*);
64 void setPercentage(PassRefPtrWillBeRawPtr<CSSPrimitiveValue> percentageValue) { m_percentageValue = percentageValue; }
66 bool hasFailedOrCanceledSubresources() const;
68 bool equals(const CSSCrossfadeValue&) const;
70 void traceAfterDispatch(Visitor*);
73 CSSCrossfadeValue(PassRefPtrWillBeRawPtr<CSSValue> fromValue, PassRefPtrWillBeRawPtr<CSSValue> toValue)
74 : CSSImageGeneratorValue(CrossfadeClass)
75 , m_fromValue(fromValue)
77 , m_cachedFromImage(0)
79 , m_crossfadeSubimageObserver(this) { }
81 class CrossfadeSubimageObserverProxy FINAL : public ImageResourceClient {
83 CrossfadeSubimageObserverProxy(CSSCrossfadeValue* ownerValue)
84 : m_ownerValue(ownerValue)
87 virtual ~CrossfadeSubimageObserverProxy() { }
88 virtual void imageChanged(ImageResource*, const IntRect* = 0) OVERRIDE;
89 void setReady(bool ready) { m_ready = ready; }
91 CSSCrossfadeValue* m_ownerValue;
95 void crossfadeChanged(const IntRect&);
97 RefPtrWillBeMember<CSSValue> m_fromValue;
98 RefPtrWillBeMember<CSSValue> m_toValue;
99 RefPtrWillBeMember<CSSPrimitiveValue> m_percentageValue;
101 ResourcePtr<ImageResource> m_cachedFromImage;
102 ResourcePtr<ImageResource> m_cachedToImage;
104 RefPtr<Image> m_generatedImage;
106 CrossfadeSubimageObserverProxy m_crossfadeSubimageObserver;
109 DEFINE_CSS_VALUE_TYPE_CASTS(CSSCrossfadeValue, isCrossfadeValue());
111 } // namespace WebCore
113 #endif // CSSCrossfadeValue_h