third_party/WebKit/Source/platform/animation/CompositorFloatAnimationCurve.h

// Copyright 2016 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 CompositorFloatAnimationCurve_h
#define CompositorFloatAnimationCurve_h

#include "platform/PlatformExport.h"
#include "platform/animation/CompositorAnimationCurve.h"
#include "platform/animation/CompositorFloatKeyframe.h"
#include "platform/animation/TimingFunction.h"
#include "wtf/Noncopyable.h"
#include "wtf/PassRefPtr.h"
#include "wtf/PtrUtil.h"
#include "wtf/Vector.h"
#include <memory>

namespace cc {
class KeyframedFloatAnimationCurve;
}

namespace blink {
class CompositorFloatKeyframe;
}

namespace blink {

// A keyframed float animation curve.
class PLATFORM_EXPORT CompositorFloatAnimationCurve : public CompositorAnimationCurve {
    WTF_MAKE_NONCOPYABLE(CompositorFloatAnimationCurve);
public:
    static std::unique_ptr<CompositorFloatAnimationCurve> create()
    {
        return wrapUnique(new CompositorFloatAnimationCurve());
    }

    ~CompositorFloatAnimationCurve() override;

    void addKeyframe(const CompositorFloatKeyframe&);
    void setTimingFunction(const TimingFunction&);
    void setScaledDuration(double);
    float getValue(double time) const;

    // CompositorAnimationCurve implementation.
    std::unique_ptr<cc::AnimationCurve> cloneToAnimationCurve() const override;

    static std::unique_ptr<CompositorFloatAnimationCurve> createForTesting(std::unique_ptr<cc::KeyframedFloatAnimationCurve>);

    using Keyframes = Vector<std::unique_ptr<CompositorFloatKeyframe>>;
    Keyframes keyframesForTesting() const;

    PassRefPtr<TimingFunction> getTimingFunctionForTesting() const;

private:
    CompositorFloatAnimationCurve();
    CompositorFloatAnimationCurve(std::unique_ptr<cc::KeyframedFloatAnimationCurve>);

    std::unique_ptr<cc::KeyframedFloatAnimationCurve> m_curve;
};

} // namespace blink

#endif // CompositorFloatAnimationCurve_h