1// Copyright (C) 2016 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#ifndef QCHRONOTIMER_H
5#define QCHRONOTIMER_H
6
7#ifndef QT_NO_QOBJECT
8
9#include <QtCore/qcoreevent.h>
10#include <QtCore/qnamespace.h>
11#include <QtCore/qobject.h>
12#include <QtCore/qproperty.h>
13#include <QtCore/qtimer.h>
14
15#include <chrono>
16
17QT_BEGIN_NAMESPACE
18
19class QTimerPrivate;
20class Q_CORE_EXPORT QChronoTimer : public QObject
21{
22 Q_OBJECT
23 Q_PROPERTY(bool singleShot READ isSingleShot WRITE setSingleShot
24 BINDABLE bindableSingleShot FINAL)
25 Q_PROPERTY(std::chrono::nanoseconds interval READ interval WRITE setInterval
26 BINDABLE bindableInterval FINAL)
27 Q_PROPERTY(std::chrono::nanoseconds remainingTime READ remainingTime FINAL)
28 Q_PROPERTY(Qt::TimerType timerType READ timerType WRITE setTimerType
29 BINDABLE bindableTimerType FINAL)
30 Q_PROPERTY(bool active READ isActive STORED false BINDABLE bindableActive FINAL)
31
32 template <typename Functor>
33 using FunctorContext = typename QtPrivate::ContextTypeForFunctor<Functor>::ContextType;
34
35public:
36 explicit QChronoTimer(std::chrono::nanoseconds nsec, QObject *parent = nullptr);
37 explicit QChronoTimer(QObject *parent = nullptr);
38 ~QChronoTimer() override;
39
40 bool isActive() const;
41 QBindable<bool> bindableActive();
42 Qt::TimerId id() const;
43
44 void setInterval(std::chrono::nanoseconds nsec);
45 std::chrono::nanoseconds interval() const;
46 QBindable<std::chrono::nanoseconds> bindableInterval();
47
48 std::chrono::nanoseconds remainingTime() const;
49
50 void setTimerType(Qt::TimerType atype);
51 Qt::TimerType timerType() const;
52 QBindable<Qt::TimerType> bindableTimerType();
53
54 void setSingleShot(bool singleShot);
55 bool isSingleShot() const;
56 QBindable<bool> bindableSingleShot();
57
58#ifdef Q_QDOC
59 template <typename Functor>
60 QMetaObject::Connection callOnTimeout(const QObject *context, Functor &&slot,
61 Qt::ConnectionType connectionType = Qt::AutoConnection);
62#else
63 template <typename ... Args>
64 QMetaObject::Connection callOnTimeout(Args && ...args)
65 {
66 return QObject::connect(this, &QChronoTimer::timeout, std::forward<Args>(args)... );
67 }
68#endif
69
70public Q_SLOTS:
71 void start();
72 void stop();
73
74Q_SIGNALS:
75 void timeout(QPrivateSignal);
76
77protected:
78 void timerEvent(QTimerEvent *) override;
79
80private:
81 Q_DISABLE_COPY(QChronoTimer)
82
83 // QChronoTimer uses QTimerPrivate
84 inline QTimerPrivate *d_func() noexcept
85 { Q_CAST_IGNORE_ALIGN(return reinterpret_cast<QTimerPrivate *>(qGetPtrHelper(d_ptr));) }
86 inline const QTimerPrivate *d_func() const noexcept
87 { Q_CAST_IGNORE_ALIGN(return reinterpret_cast<const QTimerPrivate *>(qGetPtrHelper(d_ptr));) }
88
89 // These two functions are inherited from QObject
90 int startTimer(std::chrono::nanoseconds) = delete;
91 void killTimer(int) = delete;
92};
93
94QT_END_NAMESPACE
95
96#endif // QT_NO_QOBJECT
97
98#endif // QCHRONOTIMER_H
99

source code of qtbase/src/corelib/kernel/qchronotimer.h