path: root/src/gui/graphicsview/qgraphicssceneevent.h

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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
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** This file is part of the QtGui module of the Qt Toolkit.
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#ifndef QGRAPHICSSCENEEVENT_H
#define QGRAPHICSSCENEEVENT_H

#include <QtCore/qcoreevent.h>
#include <QtCore/qpoint.h>
#include <QtCore/qrect.h>
#include <QtGui/qpolygon.h>
#include <QtCore/qset.h>
#include <QtCore/qhash.h>
#include <QtCore/qsharedpointer.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);
    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();

    inline bool contains(const Qt::GestureType &type) const
    { return gesture(type) != 0; }
    inline QList<Qt::GestureType> gestureTypes() const
    { return m_gestures.keys(); }
    inline const QGesture* gesture(const Qt::GestureType &type) const
    { return m_gestures.value(type, QSharedPointer<QGesture>()).data(); }
    inline QList<QSharedPointer<QGesture> > gestures() const
    { return m_gestures.values(); }
    void setGestures(const QList<QSharedPointer<QGesture> > &gestures);

    inline QSet<Qt::GestureType> cancelledGestures() const
    { return m_cancelledGestures; }
    void setCancelledGestures(const QSet<Qt::GestureType> &cancelledGestures)
    { m_cancelledGestures = cancelledGestures; }

    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<Qt::GestureType, QSharedPointer<QGesture> > m_gestures;
    QSet<Qt::GestureType> m_cancelledGestures;
};

class QGraphicsSceneTouchEventPrivate;
class QGraphicsSceneTouchEventTouchPointPrivate;
class Q_GUI_EXPORT QGraphicsSceneTouchEvent : public QGraphicsSceneEvent
{
public:
    QGraphicsSceneTouchEvent(Type type = None);
    ~QGraphicsSceneTouchEvent();

    class Q_GUI_EXPORT TouchPoint
    {
    public:
        TouchPoint();
        ~TouchPoint();

        int id() const;
        void setId(int id);

        Qt::TouchPointState state() const;
        void setState(Qt::TouchPointState state);

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

        QPointF startPos() const;
        void setStartPos(const QPointF &startPos);

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

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

        QPointF startScenePos() const;
        void setStartScenePos(const QPointF &startScenePos);

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

        QPointF screenPos() const;
        void setScreenPos(const QPointF &screenPos);

        QPointF startScreenPos() const;
        void setStartScreenPos(const QPointF &startScreenPos);

        QPointF lastScreenPos() const;
        void setLastScreenPos(const QPointF &lastScreenPos);

        qreal pressure() const; // 0.0 -> 1.0
        void setPressure(qreal pressure);

    private:
        QGraphicsSceneTouchEventTouchPointPrivate *d;
    };

    const QList<TouchPoint *> &touchPoints() const;
    void setTouchPoints(const QList<TouchPoint *> &touchPoints);

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

private:
    Q_DECLARE_PRIVATE(QGraphicsSceneTouchEvent);
};

#endif // QT_NO_GRAPHICSVIEW

QT_END_NAMESPACE

QT_END_HEADER

#endif