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31 #ifndef AnimationEffect_h
32 #define AnimationEffect_h
34 #include "CSSPropertyNames.h"
35 #include "wtf/HashMap.h"
36 #include "wtf/PassOwnPtr.h"
37 #include "wtf/RefCounted.h"
41 class AnimatableValue;
43 class AnimationEffect : public RefCounted<AnimationEffect> {
45 enum CompositeOperation {
49 // Encapsulates the value which results from applying a set of composition operations onto an
50 // underlying value. It is used to represent the output of the effect phase of the Web
52 class CompositableValue : public RefCounted<CompositableValue> {
54 virtual ~CompositableValue() { }
55 virtual bool dependsOnUnderlyingValue() const = 0;
56 virtual PassRefPtr<AnimatableValue> compositeOnto(const AnimatableValue*) const = 0;
59 virtual ~AnimationEffect() { }
60 typedef HashMap<CSSPropertyID, RefPtr<CompositableValue> > CompositableValueMap;
61 typedef Vector<std::pair<CSSPropertyID, RefPtr<CompositableValue> > > CompositableValueList;
62 virtual PassOwnPtr<CompositableValueList> sample(int iteration, double fraction) const = 0;
64 virtual bool affects(CSSPropertyID) { return false; };
65 virtual bool isKeyframeEffectModel() const { return false; }
68 } // namespace WebCore
70 #endif // AnimationEffect_h