1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtWidgets module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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 <QtWidgets/private/qtwidgetsglobal_p.h>
#include "qobject.h"
#include "qbasictimer.h"
#include "private/qwidget_p.h"
#include "qgesturerecognizer.h"
#ifndef QT_NO_GESTURES
#include <functional>
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);
#if QT_CONFIG(graphicsview)
bool filterEvent(QGraphicsObject *receiver, QEvent *event);
#endif // QT_CONFIG(graphicsview)
enum InstanceCreation { ForceCreation, DontForceCreation };
static QGestureManager *instance(InstanceCreation ic = ForceCreation); // 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 (std::less<QObject *>{}(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 *, QPointer<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
|
