/**************************************************************************** ** ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** 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 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 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" 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(QGesture *receiver, QEvent *event); #ifndef QT_NO_GRAPHICSVIEW bool filterEvent(QGraphicsObject *receiver, QEvent *event); #endif //QT_NO_GRAPHICSVIEW // declared in qapplication.cpp static QGestureManager* instance(); protected: void timerEvent(QTimerEvent *event); bool filterEventThroughContexts(const QMap &contexts, QEvent *event); private: QMultiMap recognizers; QSet activeGestures; QMap 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 explicitely } state; struct ObjectGesture { QWeakPointer object; Qt::GestureType gesture; ObjectGesture(QObject *o, const Qt::GestureType &g) : object(o), gesture(g) { } inline bool operator<(const ObjectGesture& rhs) const { if (object.data() < rhs.object.data()) return true; if (object == rhs.object) return gesture < rhs.gesture; return false; } }; QMap objectGestures; QMap gestureToRecognizer; QHash gestureOwners; QHash gestureTargets; int lastCustomGestureId; QGesture *getState(QObject *widget, Qt::GestureType gesture); void deliverEvents(const QSet &gestures, QSet *undeliveredGestures); void getGestureTargets(const QSet &gestures, QMap > *conflicts, QMap > *normal); }; QT_END_NAMESPACE #endif // QGESTUREMANAGER_P_H