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1 /* | 1 /* |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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31 #ifndef AnimatableValue_h | 31 #ifndef AnimatableValue_h |
32 #define AnimatableValue_h | 32 #define AnimatableValue_h |
33 | 33 |
34 #include "core/CoreExport.h" | 34 #include "core/CoreExport.h" |
35 #include "core/css/CSSValue.h" | 35 #include "core/css/CSSValue.h" |
36 #include "platform/heap/Handle.h" | 36 #include "platform/heap/Handle.h" |
37 #include "wtf/RefCounted.h" | 37 #include "wtf/RefCounted.h" |
38 | 38 |
39 namespace blink { | 39 namespace blink { |
40 | 40 |
41 class CORE_EXPORT AnimatableValue : public RefCountedWillBeGarbageCollectedFinal
ized<AnimatableValue> { | 41 class CORE_EXPORT AnimatableValue : public GarbageCollectedFinalized<AnimatableV
alue> { |
42 public: | 42 public: |
43 virtual ~AnimatableValue() { } | 43 virtual ~AnimatableValue() { } |
44 | 44 |
45 static const AnimatableValue* neutralValue(); | 45 static const AnimatableValue* neutralValue(); |
46 | 46 |
47 static PassRefPtrWillBeRawPtr<AnimatableValue> interpolate(const AnimatableV
alue*, const AnimatableValue*, double fraction); | 47 static AnimatableValue* interpolate(const AnimatableValue*, const Animatable
Value*, double fraction); |
48 static bool usesDefaultInterpolation(const AnimatableValue* from, const Anim
atableValue* to) | 48 static bool usesDefaultInterpolation(const AnimatableValue* from, const Anim
atableValue* to) |
49 { | 49 { |
50 return !from->isSameType(to) || from->usesDefaultInterpolationWith(to); | 50 return !from->isSameType(to) || from->usesDefaultInterpolationWith(to); |
51 } | 51 } |
52 | 52 |
53 bool equals(const AnimatableValue* value) const | 53 bool equals(const AnimatableValue* value) const |
54 { | 54 { |
55 return isSameType(value) && equalTo(value); | 55 return isSameType(value) && equalTo(value); |
56 } | 56 } |
57 bool equals(const AnimatableValue& value) const | 57 bool equals(const AnimatableValue& value) const |
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110 TypeSVGPaint, | 110 TypeSVGPaint, |
111 TypeShadow, | 111 TypeShadow, |
112 TypeShapeValue, | 112 TypeShapeValue, |
113 TypeStrokeDasharrayList, | 113 TypeStrokeDasharrayList, |
114 TypeTransform, | 114 TypeTransform, |
115 TypeUnknown, | 115 TypeUnknown, |
116 TypeVisibility, | 116 TypeVisibility, |
117 }; | 117 }; |
118 | 118 |
119 virtual bool usesDefaultInterpolationWith(const AnimatableValue* value) cons
t { return false; } | 119 virtual bool usesDefaultInterpolationWith(const AnimatableValue* value) cons
t { return false; } |
120 virtual PassRefPtrWillBeRawPtr<AnimatableValue> interpolateTo(const Animatab
leValue*, double fraction) const = 0; | 120 virtual AnimatableValue* interpolateTo(const AnimatableValue*, double fracti
on) const = 0; |
121 static PassRefPtrWillBeRawPtr<AnimatableValue> defaultInterpolateTo(const An
imatableValue* left, const AnimatableValue* right, double fraction) { return tak
eConstRef((fraction < 0.5) ? left : right); } | 121 static AnimatableValue* defaultInterpolateTo(const AnimatableValue* left, co
nst AnimatableValue* right, double fraction) { return takeConstRef((fraction < 0
.5) ? left : right); } |
122 | 122 |
123 template <class T> | 123 template <class T> |
124 static PassRefPtrWillBeRawPtr<T> takeConstRef(const T* value) { return PassR
efPtrWillBeRawPtr<T>(const_cast<T*>(value)); } | 124 static T* takeConstRef(const T* value) { return const_cast<T*>(value); } |
125 | 125 |
126 private: | 126 private: |
127 virtual AnimatableType type() const = 0; | 127 virtual AnimatableType type() const = 0; |
128 // Implementations can assume that the object being compared has the same ty
pe as the object this is called on | 128 // Implementations can assume that the object being compared has the same ty
pe as the object this is called on |
129 virtual bool equalTo(const AnimatableValue*) const = 0; | 129 virtual bool equalTo(const AnimatableValue*) const = 0; |
130 | 130 |
131 template <class Keyframe> friend class KeyframeEffectModel; | 131 template <class Keyframe> friend class KeyframeEffectModel; |
132 }; | 132 }; |
133 | 133 |
134 #define DEFINE_ANIMATABLE_VALUE_TYPE_CASTS(thisType, predicate) \ | 134 #define DEFINE_ANIMATABLE_VALUE_TYPE_CASTS(thisType, predicate) \ |
135 DEFINE_TYPE_CASTS(thisType, AnimatableValue, value, value->predicate, value.
predicate) | 135 DEFINE_TYPE_CASTS(thisType, AnimatableValue, value, value->predicate, value.
predicate) |
136 | 136 |
137 } // namespace blink | 137 } // namespace blink |
138 | 138 |
139 #endif // AnimatableValue_h | 139 #endif // AnimatableValue_h |
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