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    41 

    42 #ifndef QDECLARATIVESMOOTHEDANIMATION_P_H

    43 #define QDECLARATIVESMOOTHEDANIMATION_P_H

    44 

    45 //

    46 //  W A R N I N G

    47 //  -------------

    48 //

    49 // This file is not part of the Qt API.  It exists purely as an

    50 // implementation detail.  This header file may change from version to

    51 // version without notice, or even be removed.

    52 //

    53 // We mean it.

    54 //

    55 

    56 #include "private/qdeclarativesmoothedanimation_p.h"

    57 #include "private/qdeclarativeanimation_p.h"

    58 

    59 #include "private/qdeclarativeanimation_p_p.h"

    60 

    61 #include <qparallelanimationgroup.h>

    62 

    63 #include <private/qobject_p.h>

    64 #include <QTimer>

    65 

    66 QT_BEGIN_NAMESPACE

    67 

    68 class QSmoothedAnimation : public QAbstractAnimation

    69 {

    70 public:

    71     QSmoothedAnimation(QObject *parent=0);

    72 

    73     qreal to;

    74     qreal velocity;

    75     int userDuration;

    76 

    77     int maximumEasingTime;

    78     QDeclarativeSmoothedAnimation::ReversingMode reversingMode;

    79 

    80     qreal initialVelocity;

    81     qreal trackVelocity;

    82 

    83     QDeclarativeProperty target;

    84 

    85     int duration() const;

    86     void restart();

    87     void init();

    88 

    89 protected:

    90     virtual void updateCurrentTime(int);

    91     virtual void updateState(QAbstractAnimation::State, QAbstractAnimation::State);

    92 

    93 private:

    94     qreal easeFollow(qreal);

    95     qreal initialValue;

    96 

    97     bool invert;

    98 

    99     int finalDuration;

   100 

   101     // Parameters for use in updateCurrentTime()

   102     qreal a;  // Acceleration

   103     qreal d;  // Deceleration

   104     qreal tf; // Total time

   105     qreal tp; // Time at which peak velocity occurs

   106     qreal td; // Time at which decelleration begins

   107     qreal vp; // Velocity at tp

   108     qreal sp; // Displacement at tp

   109     qreal sd; // Displacement at td

   110     qreal vi; // "Normalized" initialvelocity

   111     qreal s;  // Total s

   112 

   113     int lastTime;

   114 

   115     bool recalc();

   116     void delayedStop();

   117 

   118     QTimer delayedStopTimer;

   119 };

   120 

   121 class QDeclarativeSmoothedAnimationPrivate : public QDeclarativePropertyAnimationPrivate

   122 {

   123     Q_DECLARE_PUBLIC(QDeclarativeSmoothedAnimation)

   124 public:

   125     QDeclarativeSmoothedAnimationPrivate();

   126 

   127     QParallelAnimationGroup *wrapperGroup;

   128     QSmoothedAnimation *anim;

   129     QHash<QDeclarativeProperty, QSmoothedAnimation*> activeAnimations;

   130 };

   131 

   132 QT_END_NAMESPACE

   133 

   134 #endif // QDECLARATIVESMOOTHEDANIMATION_P_H