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#ifndef QDECLARATIVEFLICKABLE_H

#define QDECLARATIVEFLICKABLE_H

#include "qdeclarativeitem.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Declarative)

class QDeclarativeFlickablePrivate;

class QDeclarativeFlickableVisibleArea;

class Q_AUTOTEST_EXPORT QDeclarativeFlickable : public QDeclarativeItem

{

    Q_OBJECT

    Q_PROPERTY(qreal contentWidth READ contentWidth WRITE setContentWidth NOTIFY contentWidthChanged)

    Q_PROPERTY(qreal contentHeight READ contentHeight WRITE setContentHeight NOTIFY contentHeightChanged)

    Q_PROPERTY(qreal contentX READ contentX WRITE setContentX NOTIFY contentXChanged)

    Q_PROPERTY(qreal contentY READ contentY WRITE setContentY NOTIFY contentYChanged)

    Q_PROPERTY(QDeclarativeItem *contentItem READ contentItem CONSTANT)

    Q_PROPERTY(qreal horizontalVelocity READ horizontalVelocity NOTIFY horizontalVelocityChanged)

    Q_PROPERTY(qreal verticalVelocity READ verticalVelocity NOTIFY verticalVelocityChanged)

    Q_PROPERTY(BoundsBehavior boundsBehavior READ boundsBehavior WRITE setBoundsBehavior NOTIFY boundsBehaviorChanged)

    Q_PROPERTY(qreal maximumFlickVelocity READ maximumFlickVelocity WRITE setMaximumFlickVelocity NOTIFY maximumFlickVelocityChanged)

    Q_PROPERTY(qreal flickDeceleration READ flickDeceleration WRITE setFlickDeceleration NOTIFY flickDecelerationChanged)

    Q_PROPERTY(bool moving READ isMoving NOTIFY movingChanged)

    Q_PROPERTY(bool movingHorizontally READ isMovingHorizontally NOTIFY movingHorizontallyChanged)

    Q_PROPERTY(bool movingVertically READ isMovingVertically NOTIFY movingVerticallyChanged)

    Q_PROPERTY(bool flicking READ isFlicking NOTIFY flickingChanged)

    Q_PROPERTY(bool flickingHorizontally READ isFlickingHorizontally NOTIFY flickingHorizontallyChanged)

    Q_PROPERTY(bool flickingVertically READ isFlickingVertically NOTIFY flickingVerticallyChanged)

    Q_PROPERTY(FlickableDirection flickableDirection READ flickableDirection WRITE setFlickableDirection NOTIFY flickableDirectionChanged)

    Q_PROPERTY(bool interactive READ isInteractive WRITE setInteractive NOTIFY interactiveChanged)

    Q_PROPERTY(int pressDelay READ pressDelay WRITE setPressDelay NOTIFY pressDelayChanged)

    Q_PROPERTY(bool atXEnd READ isAtXEnd NOTIFY isAtBoundaryChanged)

    Q_PROPERTY(bool atYEnd READ isAtYEnd NOTIFY isAtBoundaryChanged)

    Q_PROPERTY(bool atXBeginning READ isAtXBeginning NOTIFY isAtBoundaryChanged)

    Q_PROPERTY(bool atYBeginning READ isAtYBeginning NOTIFY isAtBoundaryChanged)

    Q_PROPERTY(QDeclarativeFlickableVisibleArea *visibleArea READ visibleArea CONSTANT)

    Q_PROPERTY(QDeclarativeListProperty<QObject> flickableData READ flickableData)

    Q_PROPERTY(QDeclarativeListProperty<QGraphicsObject> flickableChildren READ flickableChildren)

    Q_CLASSINFO("DefaultProperty", "flickableData")

    Q_ENUMS(FlickableDirection)

    Q_ENUMS(BoundsBehavior)

public:

    QDeclarativeFlickable(QDeclarativeItem *parent=0);

    ~QDeclarativeFlickable();

    QDeclarativeListProperty<QObject> flickableData();

    QDeclarativeListProperty<QGraphicsObject> flickableChildren();

    enum BoundsBehavior { StopAtBounds, DragOverBounds, DragAndOvershootBounds };

    BoundsBehavior boundsBehavior() const;

    void setBoundsBehavior(BoundsBehavior);

    qreal contentWidth() const;

    void setContentWidth(qreal);

    qreal contentHeight() const;

    void setContentHeight(qreal);

    qreal contentX() const;

    virtual void setContentX(qreal pos);

    qreal contentY() const;

    virtual void setContentY(qreal pos);

    bool isMoving() const;

    bool isMovingHorizontally() const;

    bool isMovingVertically() const;

    bool isFlicking() const;

    bool isFlickingHorizontally() const;

    bool isFlickingVertically() const;

    int pressDelay() const;

    void setPressDelay(int delay);

    qreal maximumFlickVelocity() const;

    void setMaximumFlickVelocity(qreal);

    qreal flickDeceleration() const;

    void setFlickDeceleration(qreal);

    bool isInteractive() const;

    void setInteractive(bool);

    qreal horizontalVelocity() const;

    qreal verticalVelocity() const;

    bool isAtXEnd() const;

    bool isAtXBeginning() const;

    bool isAtYEnd() const;

    bool isAtYBeginning() const;

    QDeclarativeItem *contentItem();

    enum FlickableDirection { AutoFlickDirection=0x00, HorizontalFlick=0x01, VerticalFlick=0x02, HorizontalAndVerticalFlick=0x03 };

    FlickableDirection flickableDirection() const;

    void setFlickableDirection(FlickableDirection);

Q_SIGNALS:

    void contentWidthChanged();

    void contentHeightChanged();

    void contentXChanged();

    void contentYChanged();

    void movingChanged();

    void movingHorizontallyChanged();

    void movingVerticallyChanged();

    void flickingChanged();

    void flickingHorizontallyChanged();

    void flickingVerticallyChanged();

    void horizontalVelocityChanged();

    void verticalVelocityChanged();

    void isAtBoundaryChanged();

    void pageChanged();

    void flickableDirectionChanged();

    void interactiveChanged();

    void boundsBehaviorChanged();

    void maximumFlickVelocityChanged();

    void flickDecelerationChanged();

    void pressDelayChanged();

    void movementStarted();

    void movementEnded();

    void flickStarted();

    void flickEnded();

protected:

    virtual bool sceneEventFilter(QGraphicsItem *, QEvent *);

    void mousePressEvent(QGraphicsSceneMouseEvent *event);

    void mouseMoveEvent(QGraphicsSceneMouseEvent *event);

    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);

    void wheelEvent(QGraphicsSceneWheelEvent *event);

    void timerEvent(QTimerEvent *event);

    QDeclarativeFlickableVisibleArea *visibleArea();

protected Q_SLOTS:

    virtual void ticked();

    void movementStarting();

    void movementEnding();

protected:

    virtual qreal minXExtent() const;

    virtual qreal minYExtent() const;

    virtual qreal maxXExtent() const;

    virtual qreal maxYExtent() const;

    qreal vWidth() const;

    qreal vHeight() const;

    virtual void viewportMoved();

    virtual void geometryChanged(const QRectF &newGeometry,

                                 const QRectF &oldGeometry);

    bool sendMouseEvent(QGraphicsSceneMouseEvent *event);

    bool xflick() const;

    bool yflick() const;

    void cancelFlick();

protected:

    QDeclarativeFlickable(QDeclarativeFlickablePrivate &dd, QDeclarativeItem *parent);

private:

    Q_DISABLE_COPY(QDeclarativeFlickable)

    Q_DECLARE_PRIVATE_D(QGraphicsItem::d_ptr.data(), QDeclarativeFlickable)

    friend class QDeclarativeFlickableVisibleArea;

};

QT_END_NAMESPACE

QML_DECLARE_TYPE(QDeclarativeFlickable)

QT_END_HEADER

#endif