2 * Copyright (C) 2011 Apple Inc. All rights reserved.
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26 #ifndef CSSCrossfadeValue_h
27 #define CSSCrossfadeValue_h
29 #include "CachedImage.h"
30 #include "CachedResourceHandle.h"
31 #include "CSSImageGeneratorValue.h"
32 #include "CSSPrimitiveValue.h"
34 #include "ImageObserver.h"
39 class CrossfadeSubimageObserverProxy;
43 class CSSCrossfadeValue : public CSSImageGeneratorValue {
44 friend class CrossfadeSubimageObserverProxy;
46 static PassRefPtr<CSSCrossfadeValue> create(PassRefPtr<CSSValue> fromValue, PassRefPtr<CSSValue> toValue)
48 return adoptRef(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 void loadSubimages(CachedResourceLoader*);
62 void setPercentage(PassRefPtr<CSSPrimitiveValue> percentageValue) { m_percentageValue = percentageValue; }
65 CSSCrossfadeValue(PassRefPtr<CSSValue> fromValue, PassRefPtr<CSSValue> toValue)
66 : CSSImageGeneratorValue(CrossfadeClass)
67 , m_fromValue(fromValue)
69 , m_cachedFromImage(0)
71 , m_crossfadeSubimageObserver(this) { }
73 class CrossfadeSubimageObserverProxy : public CachedImageClient {
75 CrossfadeSubimageObserverProxy(CSSCrossfadeValue* ownerValue)
76 : m_ownerValue(ownerValue)
79 virtual ~CrossfadeSubimageObserverProxy() { }
80 virtual void imageChanged(CachedImage*, const IntRect* = 0) OVERRIDE;
81 void setReady(bool ready) { m_ready = ready; }
83 CSSCrossfadeValue* m_ownerValue;
87 void crossfadeChanged(const IntRect&);
89 RefPtr<CSSValue> m_fromValue;
90 RefPtr<CSSValue> m_toValue;
91 RefPtr<CSSPrimitiveValue> m_percentageValue;
93 CachedResourceHandle<CachedImage> m_cachedFromImage;
94 CachedResourceHandle<CachedImage> m_cachedToImage;
96 RefPtr<Image> m_generatedImage;
98 CrossfadeSubimageObserverProxy m_crossfadeSubimageObserver;
101 } // namespace WebCore
103 #endif // CSSCrossfadeValue_h