1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtWidgets module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 3 as published by the Free Software 20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the 21 ** packaging of this file. Please review the following information to 22 ** ensure the GNU Lesser General Public License version 3 requirements 23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. 24 ** 25 ** GNU General Public License Usage 26 ** Alternatively, this file may be used under the terms of the GNU 27 ** General Public License version 2.0 or (at your option) the GNU General 28 ** Public license version 3 or any later version approved by the KDE Free 29 ** Qt Foundation. The licenses are as published by the Free Software 30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 31 ** included in the packaging of this file. Please review the following 32 ** information to ensure the GNU General Public License requirements will 33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and 34 ** https://www.gnu.org/licenses/gpl-3.0.html. 35 ** 36 ** $QT_END_LICENSE$ 37 ** 38 ****************************************************************************/ 39 40 #ifndef QGESTURERECOGNIZER_H 41 #define QGESTURERECOGNIZER_H 42 43 #include <QtWidgets/qtwidgetsglobal.h> 44 #include <QtCore/qnamespace.h> 45 46 #ifndef QT_NO_GESTURES 47 48 QT_BEGIN_NAMESPACE 49 50 51 class QObject; 52 class QEvent; 53 class QGesture; 54 class Q_WIDGETS_EXPORT QGestureRecognizer 55 { 56 public: 57 enum ResultFlag 58 { 59 Ignore = 0x0001, 60 61 MayBeGesture = 0x0002, 62 TriggerGesture = 0x0004, 63 FinishGesture = 0x0008, 64 CancelGesture = 0x0010, 65 66 ResultState_Mask = 0x00ff, 67 68 ConsumeEventHint = 0x0100, 69 // StoreEventHint = 0x0200, 70 // ReplayStoredEventsHint = 0x0400, 71 // DiscardStoredEventsHint = 0x0800, 72 73 ResultHint_Mask = 0xff00 74 }; 75 Q_DECLARE_FLAGS(Result, ResultFlag) 76 77 QGestureRecognizer(); 78 virtual ~QGestureRecognizer(); 79 80 virtual QGesture *create(QObject *target); 81 virtual Result recognize(QGesture *state, QObject *watched, 82 QEvent *event) = 0; 83 virtual void reset(QGesture *state); 84 85 static Qt::GestureType registerRecognizer(QGestureRecognizer *recognizer); 86 static void unregisterRecognizer(Qt::GestureType type); 87 }; 88 89 Q_DECLARE_OPERATORS_FOR_FLAGS(QGestureRecognizer::Result) 90 91 QT_END_NAMESPACE 92 93 #endif // QT_NO_GESTURES 94 95 #endif // QGESTURERECOGNIZER_H 96