/****************************************************************************
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: Nokia Corporation (qt-info@nokia.com)
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** This file is part of the QtGui module of the Qt Toolkit.
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** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
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** packaging of this file.  Please review the following information to
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****************************************************************************/

#ifndef QGESTURE_H
#define QGESTURE_H

#include <QtCore/qobject.h>
#include <QtCore/qlist.h>
#include <QtCore/qdatetime.h>
#include <QtCore/qpoint.h>
#include <QtCore/qrect.h>
#include <QtCore/qmetatype.h>

QT_BEGIN_HEADER

Q_DECLARE_METATYPE(Qt::GestureState)

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

class QGesturePrivate;
class Q_GUI_EXPORT QGesture : public QObject
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QGesture)

    Q_PROPERTY(Qt::GestureState state READ state)
    Q_PROPERTY(Qt::GestureType gestureType READ gestureType)
    Q_PROPERTY(QGesture::GestureCancelPolicy gestureCancelPolicy READ gestureCancelPolicy WRITE setGestureCancelPolicy)
    Q_PROPERTY(QPointF hotSpot READ hotSpot WRITE setHotSpot RESET unsetHotSpot)
    Q_PROPERTY(bool hasHotSpot READ hasHotSpot)

public:
    explicit QGesture(QObject *parent = 0);
    ~QGesture();

    Qt::GestureType gestureType() const;

    Qt::GestureState state() const;

    QPointF hotSpot() const;
    void setHotSpot(const QPointF &value);
    bool hasHotSpot() const;
    void unsetHotSpot();

    enum GestureCancelPolicy {
        CancelNone = 0,
        CancelAllInContext
    };

    void setGestureCancelPolicy(GestureCancelPolicy policy);
    GestureCancelPolicy gestureCancelPolicy() const;

protected:
    QGesture(QGesturePrivate &dd, QObject *parent);

private:
    friend class QGestureEvent;
    friend class QGestureRecognizer;
    friend class QGestureManager;
    friend class QGraphicsScenePrivate;
};

class QPanGesturePrivate;
class Q_GUI_EXPORT QPanGesture : public QGesture
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QPanGesture)

    Q_PROPERTY(QPointF lastOffset READ lastOffset WRITE setLastOffset)
    Q_PROPERTY(QPointF offset READ offset WRITE setOffset)
    Q_PROPERTY(QPointF delta READ delta STORED false)
    Q_PROPERTY(qreal acceleration READ acceleration WRITE setAcceleration)

public:
    QPanGesture(QObject *parent = 0);

    QPointF lastOffset() const;
    QPointF offset() const;
    QPointF delta() const;
    qreal acceleration() const;

    void setLastOffset(const QPointF &value);
    void setOffset(const QPointF &value);
    void setAcceleration(qreal value);

    friend class QPanGestureRecognizer;
    friend class QWinNativePanGestureRecognizer;
};

class QPinchGesturePrivate;
class Q_GUI_EXPORT QPinchGesture : public QGesture
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QPinchGesture)

public:
    enum ChangeFlag {
        ScaleFactorChanged = 0x1,
        RotationAngleChanged = 0x2,
        CenterPointChanged = 0x4
    };
    Q_DECLARE_FLAGS(ChangeFlags, ChangeFlag)

    Q_PROPERTY(ChangeFlags totalChangeFlags READ totalChangeFlags WRITE setTotalChangeFlags)
    Q_PROPERTY(ChangeFlags changeFlags READ changeFlags WRITE setChangeFlags)

    Q_PROPERTY(qreal totalScaleFactor READ totalScaleFactor WRITE setTotalScaleFactor)
    Q_PROPERTY(qreal lastScaleFactor READ lastScaleFactor WRITE setLastScaleFactor)
    Q_PROPERTY(qreal scaleFactor READ scaleFactor WRITE setScaleFactor)

    Q_PROPERTY(qreal totalRotationAngle READ totalRotationAngle WRITE setTotalRotationAngle)
    Q_PROPERTY(qreal lastRotationAngle READ lastRotationAngle WRITE setLastRotationAngle)
    Q_PROPERTY(qreal rotationAngle READ rotationAngle WRITE setRotationAngle)

    Q_PROPERTY(QPointF startCenterPoint READ startCenterPoint WRITE setStartCenterPoint)
    Q_PROPERTY(QPointF lastCenterPoint READ lastCenterPoint WRITE setLastCenterPoint)
    Q_PROPERTY(QPointF centerPoint READ centerPoint WRITE setCenterPoint)

public:
    QPinchGesture(QObject *parent = 0);

    ChangeFlags totalChangeFlags() const;
    void setTotalChangeFlags(ChangeFlags value);

    ChangeFlags changeFlags() const;
    void setChangeFlags(ChangeFlags value);

    QPointF startCenterPoint() const;
    QPointF lastCenterPoint() const;
    QPointF centerPoint() const;
    void setStartCenterPoint(const QPointF &value);
    void setLastCenterPoint(const QPointF &value);
    void setCenterPoint(const QPointF &value);

    qreal totalScaleFactor() const;
    qreal lastScaleFactor() const;
    qreal scaleFactor() const;
    void setTotalScaleFactor(qreal value);
    void setLastScaleFactor(qreal value);
    void setScaleFactor(qreal value);

    qreal totalRotationAngle() const;
    qreal lastRotationAngle() const;
    qreal rotationAngle() const;
    void setTotalRotationAngle(qreal value);
    void setLastRotationAngle(qreal value);
    void setRotationAngle(qreal value);

    friend class QPinchGestureRecognizer;
};

QT_END_NAMESPACE

Q_DECLARE_METATYPE(QPinchGesture::ChangeFlags)

QT_BEGIN_NAMESPACE

class QSwipeGesturePrivate;
class Q_GUI_EXPORT QSwipeGesture : public QGesture
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QSwipeGesture)
    Q_ENUMS(SwipeDirection)

    Q_PROPERTY(SwipeDirection horizontalDirection READ horizontalDirection STORED false)
    Q_PROPERTY(SwipeDirection verticalDirection READ verticalDirection STORED false)
    Q_PROPERTY(qreal swipeAngle READ swipeAngle WRITE setSwipeAngle)

public:
    enum SwipeDirection { NoDirection, Left, Right, Up, Down };
    QSwipeGesture(QObject *parent = 0);

    SwipeDirection horizontalDirection() const;
    SwipeDirection verticalDirection() const;

    qreal swipeAngle() const;
    void setSwipeAngle(qreal value);

    friend class QSwipeGestureRecognizer;
};

class QTapGesturePrivate;
class Q_GUI_EXPORT QTapGesture : public QGesture
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QTapGesture)

    Q_PROPERTY(QPointF position READ position WRITE setPosition)

public:
    QTapGesture(QObject *parent = 0);

    QPointF position() const;
    void setPosition(const QPointF &pos);

    friend class QTapGestureRecognizer;
};

class QTapAndHoldGesturePrivate;
class Q_GUI_EXPORT QTapAndHoldGesture : public QGesture
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QTapAndHoldGesture)

    Q_PROPERTY(QPointF position READ position WRITE setPosition)

public:
    QTapAndHoldGesture(QObject *parent = 0);

    QPointF position() const;
    void setPosition(const QPointF &pos);

    friend class QTapAndHoldGestureRecognizer;
};

QT_END_NAMESPACE

Q_DECLARE_METATYPE(QGesture::GestureCancelPolicy)
QT_END_HEADER

#endif // QGESTURE_H
