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Diffstat (limited to 'src/gui/kernel/qgesturemanager_p.h')
-rw-r--r-- | src/gui/kernel/qgesturemanager_p.h | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/src/gui/kernel/qgesturemanager_p.h b/src/gui/kernel/qgesturemanager_p.h new file mode 100644 index 0000000..c61819f --- /dev/null +++ b/src/gui/kernel/qgesturemanager_p.h @@ -0,0 +1,125 @@ +/**************************************************************************** +** +** 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 QGestureManager : public QObject +{ + Q_OBJECT +public: + QGestureManager(QObject *parent); + ~QGestureManager(); + + Qt::GestureType registerGestureRecognizer(QGestureRecognizer *recognizer); + void unregisterGestureRecognizer(Qt::GestureType type); + + bool filterEvent(QObject *receiver, QEvent *event); + + // declared in qapplication.cpp + static QGestureManager* instance(); + +protected: + void timerEvent(QTimerEvent *event); + +private: + QMultiMap<Qt::GestureType, QGestureRecognizer *> recognizers; + + QSet<QGesture *> activeGestures; + QMap<QGesture *, QBasicTimer> 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<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.data() < rhs.object.data()) + return true; + if (object == rhs.object) + return gesture < rhs.gesture; + return false; + } + }; + + QMap<ObjectGesture, QWeakPointer<QGesture> > objectGestures; + QMap<QGesture *, QGestureRecognizer *> gestureToRecognizer; + + QHash<QGesture *, QObject *> gestureTargets; + + int lastCustomGestureId; + + QGesture *getState(QObject *widget, Qt::GestureType gesture); + void deliverEvents(const QSet<QGesture *> &gestures, QObject *lastReceiver); +}; + +QT_END_NAMESPACE + +#endif // QGESTUREMANAGER_P_H |