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/****************************************************************************
**
** 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)
    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)
    //### consider drag and drop

public:
    QDeclarativeDrag(QObject *parent=0);
    ~QDeclarativeDrag();

    QGraphicsObject *target() const;
    void setTarget(QGraphicsObject *);

    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);

Q_SIGNALS:
    void targetChanged();
    void axisChanged();
    void minimumXChanged();
    void maximumXChanged();
    void minimumYChanged();
    void maximumYChanged();

private:
    QGraphicsObject *_target;
    Axis _axis;
    qreal _xmin;
    qreal _xmax;
    qreal _ymin;
    qreal _ymax;
    Q_DISABLE_COPY(QDeclarativeDrag)
};

class QDeclarativeMouseEvent;
class QDeclarativeMouseAreaPrivate;
class Q_DECLARATIVE_EXPORT QDeclarativeMouseArea : public QDeclarativeItem
{
    Q_OBJECT

    Q_PROPERTY(qreal mouseX READ mouseX NOTIFY positionChanged)
    Q_PROPERTY(qreal mouseY READ mouseY NOTIFY positionChanged)
    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 acceptHoverEvents WRITE setAcceptHoverEvents)
    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);

    QDeclarativeDrag *drag();

Q_SIGNALS:
    void hoveredChanged();
    void pressedChanged();
    void enabledChanged();
    void acceptedButtonsChanged();
    void positionChanged(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();

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);

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