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

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the QtDeclarative module of the Qt Toolkit.

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

** 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

** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

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

#ifndef QDECLARATIVEMOUSEAREA_H

#define QDECLARATIVEMOUSEAREA_H

#include "qdeclarativeitem.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Declarative)

class Q_DECLARATIVE_EXPORT QDeclarativeDrag : public QObject

{

    Q_OBJECT

    Q_ENUMS(Axis)

    Q_PROPERTY(QGraphicsObject *target READ target WRITE setTarget NOTIFY targetChanged RESET resetTarget)

    Q_PROPERTY(Axis axis READ axis WRITE setAxis NOTIFY axisChanged)

    Q_PROPERTY(qreal minimumX READ xmin WRITE setXmin NOTIFY minimumXChanged)

    Q_PROPERTY(qreal maximumX READ xmax WRITE setXmax NOTIFY maximumXChanged)

    Q_PROPERTY(qreal minimumY READ ymin WRITE setYmin NOTIFY minimumYChanged)

    Q_PROPERTY(qreal maximumY READ ymax WRITE setYmax NOTIFY maximumYChanged)

    Q_PROPERTY(bool active READ active NOTIFY activeChanged)

    //### consider drag and drop

public:

    QDeclarativeDrag(QObject *parent=0);

    ~QDeclarativeDrag();

    QGraphicsObject *target() const;

    void setTarget(QGraphicsObject *);

    void resetTarget();

    enum Axis { XAxis=0x01, YAxis=0x02, XandYAxis=0x03 };

    Axis axis() const;

    void setAxis(Axis);

    qreal xmin() const;

    void setXmin(qreal);

    qreal xmax() const;

    void setXmax(qreal);

    qreal ymin() const;

    void setYmin(qreal);

    qreal ymax() const;

    void setYmax(qreal);

    bool active() const;

    void setActive(bool);

Q_SIGNALS:

    void targetChanged();

    void axisChanged();

    void minimumXChanged();

    void maximumXChanged();

    void minimumYChanged();

    void maximumYChanged();

    void activeChanged();

private:

    QGraphicsObject *_target;

    Axis _axis;

    qreal _xmin;

    qreal _xmax;

    qreal _ymin;

    qreal _ymax;

    bool _active;

    Q_DISABLE_COPY(QDeclarativeDrag)

};

class QDeclarativeMouseEvent;

class QDeclarativeMouseAreaPrivate;

class Q_DECLARATIVE_EXPORT QDeclarativeMouseArea : public QDeclarativeItem

{

    Q_OBJECT

    Q_PROPERTY(qreal mouseX READ mouseX NOTIFY mousePositionChanged)

    Q_PROPERTY(qreal mouseY READ mouseY NOTIFY mousePositionChanged)

    Q_PROPERTY(bool containsMouse READ hovered NOTIFY hoveredChanged)

    Q_PROPERTY(bool pressed READ pressed NOTIFY pressedChanged)

    Q_PROPERTY(bool enabled READ isEnabled WRITE setEnabled NOTIFY enabledChanged)

    Q_PROPERTY(Qt::MouseButtons pressedButtons READ pressedButtons NOTIFY pressedChanged)

    Q_PROPERTY(Qt::MouseButtons acceptedButtons READ acceptedButtons WRITE setAcceptedButtons NOTIFY acceptedButtonsChanged)

    Q_PROPERTY(bool hoverEnabled READ hoverEnabled WRITE setHoverEnabled NOTIFY hoverEnabledChanged)

    Q_PROPERTY(QDeclarativeDrag *drag READ drag CONSTANT) //### add flicking to QDeclarativeDrag or add a QDeclarativeFlick ???

public:

    QDeclarativeMouseArea(QDeclarativeItem *parent=0);

    ~QDeclarativeMouseArea();

    qreal mouseX() const;

    qreal mouseY() const;

    bool isEnabled() const;

    void setEnabled(bool);

    bool hovered() const;

    bool pressed() const;

    Qt::MouseButtons pressedButtons() const;

    Qt::MouseButtons acceptedButtons() const;

    void setAcceptedButtons(Qt::MouseButtons buttons);

    bool hoverEnabled() const;

    void setHoverEnabled(bool h);

    QDeclarativeDrag *drag();

Q_SIGNALS:

    void hoveredChanged();

    void pressedChanged();

    void enabledChanged();

    void acceptedButtonsChanged();

    void hoverEnabledChanged();

    void positionChanged(QDeclarativeMouseEvent *mouse);

    void mousePositionChanged(QDeclarativeMouseEvent *mouse);

    void pressed(QDeclarativeMouseEvent *mouse);

    void pressAndHold(QDeclarativeMouseEvent *mouse);

    void released(QDeclarativeMouseEvent *mouse);

    void clicked(QDeclarativeMouseEvent *mouse);

    void doubleClicked(QDeclarativeMouseEvent *mouse);

    void entered();

    void exited();

    void canceled();

protected:

    void setHovered(bool);

    bool setPressed(bool);

    void mousePressEvent(QGraphicsSceneMouseEvent *event);

    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);

    void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event);

    void mouseMoveEvent(QGraphicsSceneMouseEvent *event);

    void hoverEnterEvent(QGraphicsSceneHoverEvent *event);

    void hoverMoveEvent(QGraphicsSceneHoverEvent *event);

    void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);

    bool sceneEvent(QEvent *);

    void timerEvent(QTimerEvent *event);

    virtual void geometryChanged(const QRectF &newGeometry,

                                 const QRectF &oldGeometry);

    virtual QVariant itemChange(GraphicsItemChange change, const QVariant& value);

private:

    void handlePress();

    void handleRelease();

private:

    Q_DISABLE_COPY(QDeclarativeMouseArea)

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

};

QT_END_NAMESPACE

QML_DECLARE_TYPE(QDeclarativeDrag)

QML_DECLARE_TYPE(QDeclarativeMouseArea)

QT_END_HEADER

#endif // QDECLARATIVEMOUSEAREA_H