1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef Interpolation_h 6 #define Interpolation_h 7 8 #include "core/animation/InterpolableValue.h" 9 #include "platform/heap/Handle.h" 10 11 namespace WebCore { 12 13 class Interpolation : public RefCountedWillBeGarbageCollected<Interpolation> { 14 DECLARE_EMPTY_VIRTUAL_DESTRUCTOR_WILL_BE_REMOVED(Interpolation); 15 public: 16 static PassRefPtrWillBeRawPtr<Interpolation> create(PassOwnPtrWillBeRawPtr<InterpolableValue> start, PassOwnPtrWillBeRawPtr<InterpolableValue> end) 17 { 18 return adoptRefWillBeNoop(new Interpolation(start, end)); 19 } 20 21 void interpolate(int iteration, double fraction) const; 22 23 virtual bool isStyleInterpolation() const { return false; } 24 virtual bool isLegacyStyleInterpolation() const { return false; } 25 26 virtual void trace(Visitor*); 27 28 protected: 29 const OwnPtrWillBeMember<InterpolableValue> m_start; 30 const OwnPtrWillBeMember<InterpolableValue> m_end; 31 32 mutable double m_cachedFraction; 33 mutable int m_cachedIteration; 34 mutable OwnPtrWillBeMember<InterpolableValue> m_cachedValue; 35 36 Interpolation(PassOwnPtrWillBeRawPtr<InterpolableValue> start, PassOwnPtrWillBeRawPtr<InterpolableValue> end); 37 38 private: 39 InterpolableValue* getCachedValueForTesting() const { return m_cachedValue.get(); } 40 41 friend class AnimationInterpolableValueTest; 42 friend class AnimationInterpolationEffectTest; 43 }; 44 45 } 46 47 #endif 48
