CCKeyframedAnimationCurve.h   [plain text]

/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef CCKeyframedAnimationCurve_h
#define CCKeyframedAnimationCurve_h

#include "TransformOperations.h"
#include "cc/CCAnimationCurve.h"
#include "cc/CCTimingFunction.h"

#include <wtf/OwnPtr.h>
#include <wtf/PassOwnPtr.h>

namespace WebCore {

class CCKeyframe {
public:
    double time() const;
    const CCTimingFunction* timingFunction() const;

protected:
    CCKeyframe(double time, PassOwnPtr<CCTimingFunction>);
    virtual ~CCKeyframe();

private:
    double m_time;
    OwnPtr<CCTimingFunction> m_timingFunction;
};

class CCFloatKeyframe : public CCKeyframe {
public:
    static PassOwnPtr<CCFloatKeyframe> create(double time, float value, PassOwnPtr<CCTimingFunction>);
    virtual ~CCFloatKeyframe();

    float value() const;

    PassOwnPtr<CCFloatKeyframe> clone() const;

private:
    CCFloatKeyframe(double time, float value, PassOwnPtr<CCTimingFunction>);

    float m_value;
};

class CCTransformKeyframe : public CCKeyframe {
public:
    static PassOwnPtr<CCTransformKeyframe> create(double time, const TransformOperations& value, PassOwnPtr<CCTimingFunction>);
    virtual ~CCTransformKeyframe();

    const TransformOperations& value() const;

    PassOwnPtr<CCTransformKeyframe> clone() const;

private:
    CCTransformKeyframe(double time, const TransformOperations& value, PassOwnPtr<CCTimingFunction>);

    TransformOperations m_value;
};

class CCKeyframedFloatAnimationCurve : public CCFloatAnimationCurve {
public:
    // It is required that the keyframes be sorted by time.
    static PassOwnPtr<CCKeyframedFloatAnimationCurve> create();

    virtual ~CCKeyframedFloatAnimationCurve();

    void addKeyframe(PassOwnPtr<CCFloatKeyframe>);

    // CCAnimationCurve implementation
    virtual double duration() const OVERRIDE;
    virtual PassOwnPtr<CCAnimationCurve> clone() const OVERRIDE;

    // CCFloatAnimationCurve implementation
    virtual float getValue(double t) const OVERRIDE;

private:
    CCKeyframedFloatAnimationCurve();

    // Always sorted in order of increasing time. No two keyframes have the
    // same time.
    Vector<OwnPtr<CCFloatKeyframe> > m_keyframes;
};

class CCKeyframedTransformAnimationCurve : public CCTransformAnimationCurve {
public:
    // It is required that the keyframes be sorted by time.
    static PassOwnPtr<CCKeyframedTransformAnimationCurve> create();

    virtual ~CCKeyframedTransformAnimationCurve();

    void addKeyframe(PassOwnPtr<CCTransformKeyframe>);

    // CCAnimationCurve implementation
    virtual double duration() const OVERRIDE;
    virtual PassOwnPtr<CCAnimationCurve> clone() const OVERRIDE;

    // CCTransformAnimationCurve implementation
    virtual TransformationMatrix getValue(double t, const IntSize&) const OVERRIDE;

private:
    CCKeyframedTransformAnimationCurve();

    // Always sorted in order of increasing time. No two keyframes have the
    // same time.
    Vector<OwnPtr<CCTransformKeyframe> > m_keyframes;
};

} // namespace WebCore

#endif // CCKeyframedAnimationCurve_h