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****************************************************************************/

#ifndef QANIMATION_H

#define QANIMATION_H

#include <QtCore/qeasingcurve.h>

#include <QtCore/qabstractanimation.h>

#include <QtCore/qvector.h>

#include <QtCore/qvariant.h>

#include <QtCore/qpair.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Core)

#ifndef QT_NO_ANIMATION

class QVariantAnimationPrivate;

class Q_CORE_EXPORT QVariantAnimation : public QAbstractAnimation

{

    Q_OBJECT

    Q_PROPERTY(QVariant startValue READ startValue WRITE setStartValue)

    Q_PROPERTY(QVariant endValue READ endValue WRITE setEndValue)

    Q_PROPERTY(QVariant currentValue READ currentValue NOTIFY valueChanged)

    Q_PROPERTY(int duration READ duration WRITE setDuration)

    Q_PROPERTY(QEasingCurve easingCurve READ easingCurve WRITE setEasingCurve)

public:

    typedef QPair<qreal, QVariant> KeyValue;

    typedef QVector<KeyValue> KeyValues;

    QVariantAnimation(QObject *parent = 0);

    ~QVariantAnimation();

    QVariant startValue() const;

    void setStartValue(const QVariant &value);

    QVariant endValue() const;

    void setEndValue(const QVariant &value);

    QVariant keyValueAt(qreal step) const;

    void setKeyValueAt(qreal step, const QVariant &value);

    KeyValues keyValues() const;

    void setKeyValues(const KeyValues &values);

    QVariant currentValue() const;

    int duration() const;

    void setDuration(int msecs);

    QEasingCurve easingCurve() const;

    void setEasingCurve(const QEasingCurve &easing);

    typedef QVariant (*Interpolator)(const void *from, const void *to, qreal progress);

Q_SIGNALS:

    void valueChanged(const QVariant &value);

protected:

    QVariantAnimation(QVariantAnimationPrivate &dd, QObject *parent = 0);

    bool event(QEvent *event);

    void updateCurrentTime(int);

    void updateState(QAbstractAnimation::State oldState, QAbstractAnimation::State newState);

    virtual void updateCurrentValue(const QVariant &value) = 0;

    virtual QVariant interpolated(const QVariant &from, const QVariant &to, qreal progress) const;

private:

    template <typename T> friend void qRegisterAnimationInterpolator(QVariant (*func)(const T &, const T &, qreal));

    static void registerInterpolator(Interpolator func, int interpolationType);

    Q_DISABLE_COPY(QVariantAnimation)

    Q_DECLARE_PRIVATE(QVariantAnimation)

};

template <typename T>

void qRegisterAnimationInterpolator(QVariant (*func)(const T &from, const T &to, qreal progress)) {

    QVariantAnimation::registerInterpolator(reinterpret_cast<QVariantAnimation::Interpolator>(func), qMetaTypeId<T>());

}

#endif //QT_NO_ANIMATION

QT_END_NAMESPACE

QT_END_HEADER

#endif //QANIMATION_H