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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;
42 class CSSCrossfadeValue : public CSSImageGeneratorValue {
43 friend class CrossfadeSubimageObserverProxy;
45 static PassRefPtrWillBeRawPtr<CSSCrossfadeValue> create(PassRefPtrWillBeRawPtr<CSSValue> fromValue, PassRefPtrWillBeRawPtr<CSSValue> toValue)
47 return adoptRefWillBeNoop(new CSSCrossfadeValue(fromValue, toValue));
52 String customCSSText() const;
54 PassRefPtr<Image> image(RenderObject*, const IntSize&);
55 bool isFixedSize() const { return true; }
56 IntSize fixedSize(const RenderObject*);
58 bool isPending() const;
59 bool knownToBeOpaque(const RenderObject*) const;
61 void loadSubimages(ResourceFetcher*);
63 void setPercentage(PassRefPtrWillBeRawPtr<CSSPrimitiveValue> percentageValue) { m_percentageValue = percentageValue; }
65 bool hasFailedOrCanceledSubresources() const;
67 bool equals(const CSSCrossfadeValue&) const;
69 void traceAfterDispatch(Visitor*);
72 CSSCrossfadeValue(PassRefPtrWillBeRawPtr<CSSValue> fromValue, PassRefPtrWillBeRawPtr<CSSValue> toValue)
73 : CSSImageGeneratorValue(CrossfadeClass)
74 , m_fromValue(fromValue)
76 , m_cachedFromImage(0)
78 , m_crossfadeSubimageObserver(this) { }
80 class CrossfadeSubimageObserverProxy final : public ImageResourceClient {
82 CrossfadeSubimageObserverProxy(CSSCrossfadeValue* ownerValue)
83 : m_ownerValue(ownerValue)
86 virtual ~CrossfadeSubimageObserverProxy() { }
87 virtual void imageChanged(ImageResource*, const IntRect* = 0) override;
88 void setReady(bool ready) { m_ready = ready; }
90 CSSCrossfadeValue* m_ownerValue;
94 void crossfadeChanged(const IntRect&);
96 RefPtrWillBeMember<CSSValue> m_fromValue;
97 RefPtrWillBeMember<CSSValue> m_toValue;
98 RefPtrWillBeMember<CSSPrimitiveValue> m_percentageValue;
100 ResourcePtr<ImageResource> m_cachedFromImage;
101 ResourcePtr<ImageResource> m_cachedToImage;
103 RefPtr<Image> m_generatedImage;
105 CrossfadeSubimageObserverProxy m_crossfadeSubimageObserver;
108 DEFINE_CSS_VALUE_TYPE_CASTS(CSSCrossfadeValue, isCrossfadeValue());
112 #endif // CSSCrossfadeValue_h