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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef Interpolation_h
#define Interpolation_h
#include "core/animation/InterpolableValue.h"
#include "platform/heap/Handle.h"
namespace blink {
class Interpolation : public RefCountedWillBeGarbageCollected<Interpolation> {
DECLARE_EMPTY_VIRTUAL_DESTRUCTOR_WILL_BE_REMOVED(Interpolation);
public:
static PassRefPtrWillBeRawPtr<Interpolation> create(PassOwnPtrWillBeRawPtr<InterpolableValue> start, PassOwnPtrWillBeRawPtr<InterpolableValue> end)
{
return adoptRefWillBeNoop(new Interpolation(start, end));
}
void interpolate(int iteration, double fraction) const;
virtual bool isStyleInterpolation() const { return false; }
virtual bool isLegacyStyleInterpolation() const { return false; }
virtual void trace(Visitor*);
protected:
const OwnPtrWillBeMember<InterpolableValue> m_start;
const OwnPtrWillBeMember<InterpolableValue> m_end;
mutable double m_cachedFraction;
mutable int m_cachedIteration;
mutable OwnPtrWillBeMember<InterpolableValue> m_cachedValue;
Interpolation(PassOwnPtrWillBeRawPtr<InterpolableValue> start, PassOwnPtrWillBeRawPtr<InterpolableValue> end);
private:
InterpolableValue* getCachedValueForTesting() const { return m_cachedValue.get(); }
friend class AnimationInterpolableValueTest;
friend class AnimationInterpolationEffectTest;
friend class AnimationDoubleStyleInterpolationTest;
friend class AnimationVisibilityStyleInterpolationTest;
friend class AnimationColorStyleInterpolationTest;
};
} // namespace blink
#endif // Interpolation_h
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