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
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
// Copyright (C) 2020 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QFUTUREWATCHER_H
#define QFUTUREWATCHER_H
#include <QtCore/qfuture.h>
#include <QtCore/qobject.h>
QT_REQUIRE_CONFIG(future);
QT_BEGIN_NAMESPACE
class QEvent;
class QFutureWatcherBasePrivate;
class Q_CORE_EXPORT QFutureWatcherBase : public QObject
{
Q_OBJECT
Q_DECLARE_PRIVATE(QFutureWatcherBase)
public:
explicit QFutureWatcherBase(QObject *parent = nullptr);
// de-inline dtor
int progressValue() const;
int progressMinimum() const;
int progressMaximum() const;
QString progressText() const;
bool isStarted() const;
bool isFinished() const;
bool isRunning() const;
bool isCanceled() const;
#if QT_DEPRECATED_SINCE(6, 0)
QT_DEPRECATED_VERSION_X_6_0("Use isSuspending() or isSuspended() instead.")
bool isPaused() const;
#endif
bool isSuspending() const;
bool isSuspended() const;
void waitForFinished();
void setPendingResultsLimit(int limit);
bool event(QEvent *event) override;
Q_SIGNALS:
void started();
void finished();
void canceled();
#if QT_DEPRECATED_SINCE(6, 0)
QT_DEPRECATED_VERSION_X_6_0("Use suspending() instead.")
void paused();
#endif
void suspending();
void suspended();
void resumed();
void resultReadyAt(int resultIndex);
void resultsReadyAt(int beginIndex, int endIndex);
void progressRangeChanged(int minimum, int maximum);
void progressValueChanged(int progressValue);
void progressTextChanged(const QString &progressText);
public Q_SLOTS:
void cancel();
void setSuspended(bool suspend);
void suspend();
void resume();
void toggleSuspended();
#if QT_DEPRECATED_SINCE(6, 0)
QT_DEPRECATED_VERSION_X_6_0("Use setSuspended() instead.")
void setPaused(bool paused);
QT_DEPRECATED_VERSION_X_6_0("Use suspended() instead.")
void pause();
QT_DEPRECATED_VERSION_X_6_0("Use toggleSuspended() instead.")
void togglePaused();
#endif
protected:
void connectNotify (const QMetaMethod &signal) override;
void disconnectNotify (const QMetaMethod &signal) override;
// called from setFuture() implemented in template sub-classes
void connectOutputInterface();
void disconnectOutputInterface(bool pendingAssignment = false);
private:
// implemented in the template sub-classes
virtual const QFutureInterfaceBase &futureInterface() const = 0;
virtual QFutureInterfaceBase &futureInterface() = 0;
};
template <typename T>
class QFutureWatcher : public QFutureWatcherBase
{
public:
explicit QFutureWatcher(QObject *_parent = nullptr)
: QFutureWatcherBase(_parent)
{ }
~QFutureWatcher()
{ disconnectOutputInterface(); }
void setFuture(const QFuture<T> &future);
QFuture<T> future() const
{ return m_future; }
template<typename U = T, typename = QtPrivate::EnableForNonVoid<U>>
T result() const { return m_future.result(); }
template<typename U = T, typename = QtPrivate::EnableForNonVoid<U>>
T resultAt(int index) const { return m_future.resultAt(index); }
#ifdef Q_QDOC
int progressValue() const;
int progressMinimum() const;
int progressMaximum() const;
QString progressText() const;
bool isStarted() const;
bool isFinished() const;
bool isRunning() const;
bool isCanceled() const;
#if QT_DEPRECATED_SINCE(6, 0)
bool isPaused() const;
#endif
bool isSuspending() const;
bool isSuspended() const;
void waitForFinished();
void setPendingResultsLimit(int limit);
Q_SIGNALS:
void started();
void finished();
void canceled();
#if QT_DEPRECATED_SINCE(6, 0)
void paused();
#endif
void suspending();
void suspended();
void resumed();
void resultReadyAt(int resultIndex);
void resultsReadyAt(int beginIndex, int endIndex);
void progressRangeChanged(int minimum, int maximum);
void progressValueChanged(int progressValue);
void progressTextChanged(const QString &progressText);
public Q_SLOTS:
void cancel();
void setSuspended(bool suspend);
void suspend();
void resume();
void toggleSuspended();
#if QT_DEPRECATED_SINCE(6, 0)
void setPaused(bool paused);
void pause();
void togglePaused();
#endif // QT_DEPRECATED_SINCE(6, 0)
#endif // Q_QDOC
private:
QFuture<T> m_future;
const QFutureInterfaceBase &futureInterface() const override { return m_future.d; }
QFutureInterfaceBase &futureInterface() override { return m_future.d; }
};
template <typename T>
Q_INLINE_TEMPLATE void QFutureWatcher<T>::setFuture(const QFuture<T> &_future)
{
if (_future.d == m_future.d)
return;
disconnectOutputInterface(true);
m_future = _future;
connectOutputInterface();
}
QT_END_NAMESPACE
#endif // QFUTUREWATCHER_H
|
