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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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37 | 37 |
38 namespace blink { | 38 namespace blink { |
39 | 39 |
40 class AnimatableValue : public RefCountedWillBeGarbageCollectedFinalized<Animata
bleValue> { | 40 class AnimatableValue : public RefCountedWillBeGarbageCollectedFinalized<Animata
bleValue> { |
41 public: | 41 public: |
42 virtual ~AnimatableValue() { } | 42 virtual ~AnimatableValue() { } |
43 | 43 |
44 static const AnimatableValue* neutralValue(); | 44 static const AnimatableValue* neutralValue(); |
45 | 45 |
46 static PassRefPtrWillBeRawPtr<AnimatableValue> interpolate(const AnimatableV
alue*, const AnimatableValue*, double fraction); | 46 static PassRefPtrWillBeRawPtr<AnimatableValue> interpolate(const AnimatableV
alue*, const AnimatableValue*, double fraction); |
47 static double distance(const AnimatableValue* from, const AnimatableValue* t
o); | |
48 static bool usesDefaultInterpolation(const AnimatableValue* from, const Anim
atableValue* to) | 47 static bool usesDefaultInterpolation(const AnimatableValue* from, const Anim
atableValue* to) |
49 { | 48 { |
50 return !from->isSameType(to) || from->usesDefaultInterpolationWith(to); | 49 return !from->isSameType(to) || from->usesDefaultInterpolationWith(to); |
51 } | 50 } |
52 | 51 |
53 bool equals(const AnimatableValue* value) const | 52 bool equals(const AnimatableValue* value) const |
54 { | 53 { |
55 return isSameType(value) && equalTo(value); | 54 return isSameType(value) && equalTo(value); |
56 } | 55 } |
57 bool equals(const AnimatableValue& value) const | 56 bool equals(const AnimatableValue& value) const |
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121 static PassRefPtrWillBeRawPtr<AnimatableValue> defaultInterpolateTo(const An
imatableValue* left, const AnimatableValue* right, double fraction) { return tak
eConstRef((fraction < 0.5) ? left : right); } | 120 static PassRefPtrWillBeRawPtr<AnimatableValue> defaultInterpolateTo(const An
imatableValue* left, const AnimatableValue* right, double fraction) { return tak
eConstRef((fraction < 0.5) ? left : right); } |
122 | 121 |
123 template <class T> | 122 template <class T> |
124 static PassRefPtrWillBeRawPtr<T> takeConstRef(const T* value) { return PassR
efPtrWillBeRawPtr<T>(const_cast<T*>(value)); } | 123 static PassRefPtrWillBeRawPtr<T> takeConstRef(const T* value) { return PassR
efPtrWillBeRawPtr<T>(const_cast<T*>(value)); } |
125 | 124 |
126 private: | 125 private: |
127 virtual AnimatableType type() const = 0; | 126 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 | 127 // 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; | 128 virtual bool equalTo(const AnimatableValue*) const = 0; |
130 | 129 |
131 virtual double distanceTo(const AnimatableValue*) const; | |
132 | |
133 template <class Keyframe> friend class KeyframeEffectModel; | 130 template <class Keyframe> friend class KeyframeEffectModel; |
134 }; | 131 }; |
135 | 132 |
136 #define DEFINE_ANIMATABLE_VALUE_TYPE_CASTS(thisType, predicate) \ | 133 #define DEFINE_ANIMATABLE_VALUE_TYPE_CASTS(thisType, predicate) \ |
137 DEFINE_TYPE_CASTS(thisType, AnimatableValue, value, value->predicate, value.
predicate) | 134 DEFINE_TYPE_CASTS(thisType, AnimatableValue, value, value->predicate, value.
predicate) |
138 | 135 |
139 } // namespace blink | 136 } // namespace blink |
140 | 137 |
141 #endif // AnimatableValue_h | 138 #endif // AnimatableValue_h |
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