| /**************************************************************************** |
| ** |
| ** Copyright (C) 2015 The Qt Company Ltd. |
| ** Contact: http://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtWidgets module of the Qt Toolkit. |
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| ** $QT_BEGIN_LICENSE:LGPL21$ |
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| ****************************************************************************/ |
| |
| #ifndef QGESTUREMANAGER_P_H |
| #define QGESTUREMANAGER_P_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists for the convenience |
| // of other Qt classes. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| #include "qobject.h" |
| #include "qbasictimer.h" |
| #include "private/qwidget_p.h" |
| #include "qgesturerecognizer.h" |
| |
| #ifndef QT_NO_GESTURES |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QBasicTimer; |
| class QGraphicsObject; |
| class QGestureManager : public QObject |
| { |
| Q_OBJECT |
| public: |
| QGestureManager(QObject *parent); |
| ~QGestureManager(); |
| |
| Qt::GestureType registerGestureRecognizer(QGestureRecognizer *recognizer); |
| void unregisterGestureRecognizer(Qt::GestureType type); |
| |
| bool filterEvent(QWidget *receiver, QEvent *event); |
| bool filterEvent(QObject *receiver, QEvent *event); |
| #ifndef QT_NO_GRAPHICSVIEW |
| bool filterEvent(QGraphicsObject *receiver, QEvent *event); |
| #endif //QT_NO_GRAPHICSVIEW |
| |
| static QGestureManager* instance(); // declared in qapplication.cpp |
| static bool gesturePending(QObject *o); |
| |
| void cleanupCachedGestures(QObject *target, Qt::GestureType type); |
| |
| void recycle(QGesture *gesture); |
| |
| protected: |
| bool filterEventThroughContexts(const QMultiMap<QObject *, Qt::GestureType> &contexts, |
| QEvent *event); |
| |
| private: |
| QMultiMap<Qt::GestureType, QGestureRecognizer *> m_recognizers; |
| |
| QSet<QGesture *> m_activeGestures; |
| QSet<QGesture *> m_maybeGestures; |
| |
| enum State { |
| Gesture, |
| NotGesture, |
| MaybeGesture // this means timers are up and waiting for some |
| // more events, and input events are handled by |
| // gesture recognizer explicitly |
| } state; |
| |
| struct ObjectGesture |
| { |
| QObject* object; |
| Qt::GestureType gesture; |
| |
| ObjectGesture(QObject *o, const Qt::GestureType &g) : object(o), gesture(g) { } |
| inline bool operator<(const ObjectGesture &rhs) const |
| { |
| if (object < rhs.object) |
| return true; |
| if (object == rhs.object) |
| return gesture < rhs.gesture; |
| return false; |
| } |
| }; |
| |
| QMap<ObjectGesture, QList<QGesture *> > m_objectGestures; |
| QHash<QGesture *, QGestureRecognizer *> m_gestureToRecognizer; |
| QHash<QGesture *, QObject *> m_gestureOwners; |
| |
| QHash<QGesture *, QWidget *> m_gestureTargets; |
| |
| int m_lastCustomGestureId; |
| |
| QHash<QGestureRecognizer *, QSet<QGesture *> > m_obsoleteGestures; |
| QHash<QGesture *, QGestureRecognizer *> m_deletedRecognizers; |
| QSet<QGesture *> m_gesturesToDelete; |
| void cleanupGesturesForRemovedRecognizer(QGesture *gesture); |
| |
| QGesture *getState(QObject *widget, QGestureRecognizer *recognizer, |
| Qt::GestureType gesture); |
| void deliverEvents(const QSet<QGesture *> &gestures, |
| QSet<QGesture *> *undeliveredGestures); |
| void getGestureTargets(const QSet<QGesture*> &gestures, |
| QHash<QWidget *, QList<QGesture *> > *conflicts, |
| QHash<QWidget *, QList<QGesture *> > *normal); |
| |
| void cancelGesturesForChildren(QGesture *originatingGesture); |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif // QT_NO_GESTURES |
| |
| #endif // QGESTUREMANAGER_P_H |