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#ifndef QFXFLICKABLE_P_H
#define QFXFLICKABLE_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include "qdatetime.h"
#include "qfxflickable.h"
#include "qfxitem_p.h"
#include "qml.h"
#include "private/qmltimeline_p.h"
#include "private/qmlanimation_p.h"

QT_BEGIN_NAMESPACE

class QFxFlickableVisibleArea;
class QFxFlickablePrivate : public QFxItemPrivate
{
    Q_DECLARE_PUBLIC(QFxFlickable)

public:
    QFxFlickablePrivate();
    void init();
    virtual void flickX(qreal velocity);
    virtual void flickY(qreal velocity);
    virtual void fixupX();
    virtual void fixupY();
    void updateBeginningEnd();

    void captureDelayedPress(QGraphicsSceneMouseEvent *event);
    void clearDelayedPress();

public:
    QFxItem *viewport;
    QmlTimeLineValueProxy<QFxItem> _moveX;
    QmlTimeLineValueProxy<QFxItem> _moveY;
    QmlTimeLine timeline;
    qreal vWidth;
    qreal vHeight;
    bool overShoot : 1;
    bool flicked : 1;
    bool moving : 1;
    bool stealMouse : 1;
    bool pressed : 1;
    bool atXEnd : 1;
    bool atXBeginning : 1;
    bool atYEnd : 1;
    bool atYBeginning : 1;
    bool interactive : 1;
    QTime lastPosTime;
    QPointF lastPos;
    QPointF pressPos;
    qreal pressX;
    qreal pressY;
    qreal velocityX;
    qreal velocityY;
    QTime pressTime;
    QmlTimeLineEvent fixupXEvent;
    QmlTimeLineEvent fixupYEvent;
    qreal deceleration;
    qreal maxVelocity;
    QTime velocityTime;
    QPointF lastFlickablePosition;
    qreal reportedVelocitySmoothing;
    int flickTargetX;
    int flickTargetY;
    QGraphicsSceneMouseEvent *delayedPressEvent;
    QGraphicsItem *delayedPressTarget;
    QBasicTimer delayedPressTimer;
    int pressDelay;

    void updateVelocity();
    struct Velocity : public QmlTimeLineValue
    {
        Velocity(QFxFlickablePrivate *p)
            : parent(p) {}
        virtual void setValue(qreal v) {
            QmlTimeLineValue::setValue(v);
            parent->updateVelocity();
        }
        QFxFlickablePrivate *parent;
    };
    Velocity horizontalVelocity;
    Velocity verticalVelocity;
    int vTime;
    QmlTimeLine velocityTimeline;
    QFxFlickableVisibleArea *visibleArea;

    void handleMousePressEvent(QGraphicsSceneMouseEvent *);
    void handleMouseMoveEvent(QGraphicsSceneMouseEvent *);
    void handleMouseReleaseEvent(QGraphicsSceneMouseEvent *);

    // flickableData property
    void data_removeAt(int);
    int data_count() const;
    void data_append(QObject *);
    void data_insert(int, QObject *);
    QObject *data_at(int) const;
    void data_clear();

    friend class QFxFlickableVisibleArea;
    QML_DECLARE_LIST_PROXY(QFxFlickablePrivate, QObject *, data)
};

QT_END_NAMESPACE

#endif