/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui 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 either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
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**
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****************************************************************************/

#ifndef QGRAPHICSSCENEEVENT_H
#define QGRAPHICSSCENEEVENT_H

#include <QtCore/qcoreevent.h>
#include <QtCore/qpoint.h>
#include <QtCore/qscopedpointer.h>
#include <QtCore/qrect.h>
#include <QtGui/qpolygon.h>
#include <QtCore/qset.h>
#include <QtCore/qhash.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

#if !defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW

class QMimeData;
class QPointF;
class QSizeF;
class QWidget;

class QGraphicsSceneEventPrivate;
class Q_GUI_EXPORT QGraphicsSceneEvent : public QEvent
{
public:
    QGraphicsSceneEvent(Type type);
    ~QGraphicsSceneEvent();

    QWidget *widget() const;
    void setWidget(QWidget *widget);

protected:
    QGraphicsSceneEvent(QGraphicsSceneEventPrivate &dd, Type type = None);
    QScopedPointer<QGraphicsSceneEventPrivate> d_ptr;
    Q_DECLARE_PRIVATE(QGraphicsSceneEvent)
};

class QGraphicsSceneMouseEventPrivate;
class Q_GUI_EXPORT QGraphicsSceneMouseEvent : public QGraphicsSceneEvent
{
public:
    QGraphicsSceneMouseEvent(Type type = None);
    ~QGraphicsSceneMouseEvent();

    QPointF pos() const;
    void setPos(const QPointF &pos);

    QPointF scenePos() const;
    void setScenePos(const QPointF &pos);

    QPoint screenPos() const;
    void setScreenPos(const QPoint &pos);

    QPointF buttonDownPos(Qt::MouseButton button) const;
    void setButtonDownPos(Qt::MouseButton button, const QPointF &pos);

    QPointF buttonDownScenePos(Qt::MouseButton button) const;
    void setButtonDownScenePos(Qt::MouseButton button, const QPointF &pos);

    QPoint buttonDownScreenPos(Qt::MouseButton button) const;
    void setButtonDownScreenPos(Qt::MouseButton button, const QPoint &pos);

    QPointF lastPos() const;
    void setLastPos(const QPointF &pos);

    QPointF lastScenePos() const;
    void setLastScenePos(const QPointF &pos);

    QPoint lastScreenPos() const;
    void setLastScreenPos(const QPoint &pos);

    Qt::MouseButtons buttons() const;
    void setButtons(Qt::MouseButtons buttons);

    Qt::MouseButton button() const;
    void setButton(Qt::MouseButton button);

    Qt::KeyboardModifiers modifiers() const;
    void setModifiers(Qt::KeyboardModifiers modifiers);

private:
    Q_DECLARE_PRIVATE(QGraphicsSceneMouseEvent)
};

class QGraphicsSceneWheelEventPrivate;
class Q_GUI_EXPORT QGraphicsSceneWheelEvent : public QGraphicsSceneEvent
{
public:
    QGraphicsSceneWheelEvent(Type type = None);
    ~QGraphicsSceneWheelEvent();

    QPointF pos() const;
    void setPos(const QPointF &pos);

    QPointF scenePos() const;
    void setScenePos(const QPointF &pos);

    QPoint screenPos() const;
    void setScreenPos(const QPoint &pos);

    Qt::MouseButtons buttons() const;
    void setButtons(Qt::MouseButtons buttons);

    Qt::KeyboardModifiers modifiers() const;
    void setModifiers(Qt::KeyboardModifiers modifiers);

    int delta() const;
    void setDelta(int delta);

    Qt::Orientation orientation() const;
    void setOrientation(Qt::Orientation orientation);

private:
    Q_DECLARE_PRIVATE(QGraphicsSceneWheelEvent)
};

class QGraphicsSceneContextMenuEventPrivate;
class Q_GUI_EXPORT QGraphicsSceneContextMenuEvent : public QGraphicsSceneEvent
{
public:
    enum Reason { Mouse, Keyboard, Other };

    QGraphicsSceneContextMenuEvent(Type type = None);
    ~QGraphicsSceneContextMenuEvent();

    QPointF pos() const;
    void setPos(const QPointF &pos);

    QPointF scenePos() const;
    void setScenePos(const QPointF &pos);

    QPoint screenPos() const;
    void setScreenPos(const QPoint &pos);

    Qt::KeyboardModifiers modifiers() const;
    void setModifiers(Qt::KeyboardModifiers modifiers);

    Reason reason() const;
    void setReason(Reason reason);

private:
    Q_DECLARE_PRIVATE(QGraphicsSceneContextMenuEvent)
};

class QGraphicsSceneHoverEventPrivate;
class Q_GUI_EXPORT QGraphicsSceneHoverEvent : public QGraphicsSceneEvent
{
public:
    QGraphicsSceneHoverEvent(Type type = None);
    ~QGraphicsSceneHoverEvent();

    QPointF pos() const;
    void setPos(const QPointF &pos);

    QPointF scenePos() const;
    void setScenePos(const QPointF &pos);

    QPoint screenPos() const;
    void setScreenPos(const QPoint &pos);

    QPointF lastPos() const;
    void setLastPos(const QPointF &pos);

    QPointF lastScenePos() const;
    void setLastScenePos(const QPointF &pos);

    QPoint lastScreenPos() const;
    void setLastScreenPos(const QPoint &pos);

    Qt::KeyboardModifiers modifiers() const;
    void setModifiers(Qt::KeyboardModifiers modifiers);

private:
    Q_DECLARE_PRIVATE(QGraphicsSceneHoverEvent)
};

class QGraphicsSceneHelpEventPrivate;
class Q_GUI_EXPORT QGraphicsSceneHelpEvent : public QGraphicsSceneEvent
{
public:
    QGraphicsSceneHelpEvent(Type type = None);
    ~QGraphicsSceneHelpEvent();

    QPointF scenePos() const;
    void setScenePos(const QPointF &pos);

    QPoint screenPos() const;
    void setScreenPos(const QPoint &pos);

private:
    Q_DECLARE_PRIVATE(QGraphicsSceneHelpEvent)
};

class QGraphicsSceneDragDropEventPrivate;
class Q_GUI_EXPORT QGraphicsSceneDragDropEvent : public QGraphicsSceneEvent
{
public:
    QGraphicsSceneDragDropEvent(Type type = None);
    ~QGraphicsSceneDragDropEvent();

    QPointF pos() const;
    void setPos(const QPointF &pos);

    QPointF scenePos() const;
    void setScenePos(const QPointF &pos);

    QPoint screenPos() const;
    void setScreenPos(const QPoint &pos);

    Qt::MouseButtons buttons() const;
    void setButtons(Qt::MouseButtons buttons);

    Qt::KeyboardModifiers modifiers() const;
    void setModifiers(Qt::KeyboardModifiers modifiers);

    Qt::DropActions possibleActions() const;
    void setPossibleActions(Qt::DropActions actions);

    Qt::DropAction proposedAction() const;
    void setProposedAction(Qt::DropAction action);
    void acceptProposedAction();

    Qt::DropAction dropAction() const;
    void setDropAction(Qt::DropAction action);

    QWidget *source() const;
    void setSource(QWidget *source);

    const QMimeData *mimeData() const;
    void setMimeData(const QMimeData *data);

private:
    Q_DECLARE_PRIVATE(QGraphicsSceneDragDropEvent)
};

class QGraphicsSceneResizeEventPrivate;
class Q_GUI_EXPORT QGraphicsSceneResizeEvent : public QGraphicsSceneEvent
{
    Q_DECLARE_PRIVATE(QGraphicsSceneResizeEvent)
public:
    QGraphicsSceneResizeEvent();
    ~QGraphicsSceneResizeEvent();

    QSizeF oldSize() const;
    void setOldSize(const QSizeF &size);

    QSizeF newSize() const;
    void setNewSize(const QSizeF &size);
};

class QGraphicsSceneMoveEventPrivate;
class Q_GUI_EXPORT QGraphicsSceneMoveEvent : public QGraphicsSceneEvent
{
    Q_DECLARE_PRIVATE(QGraphicsSceneMoveEvent)
public:
    QGraphicsSceneMoveEvent();
    ~QGraphicsSceneMoveEvent();

    QPointF oldPos() const;
    void setOldPos(const QPointF &pos);

    QPointF newPos() const;
    void setNewPos(const QPointF &pos);
};

class QGesture;
class QGraphicsItem;
class QGraphicsSceneGestureEventPrivate;
class Q_GUI_EXPORT QGraphicsSceneGestureEvent : public QGraphicsSceneEvent
{
    Q_DECLARE_PRIVATE(QGraphicsSceneGestureEvent)
public:
    QGraphicsSceneGestureEvent();
    ~QGraphicsSceneGestureEvent();

    bool contains(const QString &type) const;
    bool contains(Qt::GestureType type) const;

    QList<QString> gestureTypes() const;

    const QGesture* gesture(Qt::GestureType type) const;
    const QGesture* gesture(const QString &type) const;
    QList<QGesture*> gestures() const;
    void setGestures(const QList<QGesture*> &gestures);
    void setGestures(const QSet<QGesture*> &gestures);

    QSet<QString> cancelledGestures() const;
    void setCancelledGestures(const QSet<QString> &cancelledGestures);

    void acceptAll();
#ifndef Q_NO_USING_KEYWORD
    using QEvent::accept;
#else
    inline void accept() { QEvent::accept(); }
#endif
    void accept(Qt::GestureType type);
    void accept(const QString &type);

    QPointF mapToScene(const QPoint &point) const;
    QPolygonF mapToScene(const QRect &rect) const;
    QPointF mapToItem(const QPoint &point, QGraphicsItem *item) const;
    QPolygonF mapToItem(const QRect &rect, QGraphicsItem *item) const;

protected:
    QHash<QString, QGesture*> m_gestures;
    QSet<QString> m_cancelledGestures;
};

#endif // QT_NO_GRAPHICSVIEW

QT_END_NAMESPACE

QT_END_HEADER

#endif