Source/core/animation/Player.h

/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 * notice, this list of conditions and the following disclaimer.
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 * in the documentation and/or other materials provided with the
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 */

#ifndef Player_h
#define Player_h

#include "core/animation/TimedItem.h"
#include "wtf/RefPtr.h"

namespace WebCore {

class DocumentTimeline;

class Player FINAL : public RefCounted<Player> {

public:
    ~Player();
    static PassRefPtr<Player> create(DocumentTimeline*, TimedItem*);

    // Returns whether this player is still current or in effect.
    bool update();
    void cancel();
    double currentTime() const;
    void setCurrentTime(double);
    bool paused() const { return !isNull(m_pauseStartTime); }
    void setPaused(bool);
    double playbackRate() const { return m_playbackRate; }
    void setPlaybackRate(double);
    double startTime() const { return m_startTime; }
    double timeDrift() const;
    DocumentTimeline* timeline() { return m_timeline; }

private:
    Player(DocumentTimeline*, TimedItem*);
    static double effectiveTime(double time) { return isNull(time) ? 0 : time; }
    inline double pausedTimeDrift() const;
    inline double currentTimeBeforeDrift() const;

    double m_pauseStartTime;
    double m_playbackRate;
    double m_timeDrift;
    const double m_startTime;

    RefPtr<TimedItem> m_content;
    DocumentTimeline* const m_timeline;
};

} // namespace

#endif