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#ifndef QTIMELINE_H

#define QTIMELINE_H

#include <QtCore/qeasingcurve.h>

#include <QtCore/qobject.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Core)

class QTimeLinePrivate;

class Q_CORE_EXPORT QTimeLine : public QObject

{

    Q_OBJECT

    Q_PROPERTY(int duration READ duration WRITE setDuration)

    Q_PROPERTY(int updateInterval READ updateInterval WRITE setUpdateInterval)

    Q_PROPERTY(int currentTime READ currentTime WRITE setCurrentTime)

    Q_PROPERTY(Direction direction READ direction WRITE setDirection)

    Q_PROPERTY(int loopCount READ loopCount WRITE setLoopCount)

    Q_PROPERTY(CurveShape curveShape READ curveShape WRITE setCurveShape)

    Q_PROPERTY(QEasingCurve easingCurve READ easingCurve WRITE setEasingCurve)

public:

    enum State {

        NotRunning,

        Paused,

        Running

    };

    enum Direction {

        Forward,

        Backward

    };

    enum CurveShape {

        EaseInCurve,

        EaseOutCurve,

        EaseInOutCurve,

        LinearCurve,

        SineCurve,

        CosineCurve

    };

    explicit QTimeLine(int duration = 1000, QObject *parent = 0);

    virtual ~QTimeLine();

    State state() const;

    int loopCount() const;

    void setLoopCount(int count);

    Direction direction() const;

    void setDirection(Direction direction);

    int duration() const;

    void setDuration(int duration);

    int startFrame() const;

    void setStartFrame(int frame);

    int endFrame() const;

    void setEndFrame(int frame);

    void setFrameRange(int startFrame, int endFrame);

    int updateInterval() const;

    void setUpdateInterval(int interval);

    CurveShape curveShape() const;

    void setCurveShape(CurveShape shape);

    QEasingCurve easingCurve() const;

    void setEasingCurve(const QEasingCurve &curve);

    int currentTime() const;

    int currentFrame() const;

    qreal currentValue() const;

    int frameForTime(int msec) const;

    virtual qreal valueForTime(int msec) const;

public Q_SLOTS:

    void start();

    void resume();

    void stop();

    void setPaused(bool paused);

    void setCurrentTime(int msec);

    void toggleDirection();

Q_SIGNALS:

    void valueChanged(qreal x);

    void frameChanged(int);

    void stateChanged(QTimeLine::State newState);

    void finished();

protected:

    void timerEvent(QTimerEvent *event);

private:

    Q_DISABLE_COPY(QTimeLine)

    Q_DECLARE_PRIVATE(QTimeLine)

};

QT_END_NAMESPACE

QT_END_HEADER

#endif