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+/****************************************************************************
+**
+** 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