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// 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 QBASICTIMER_H
#define QBASICTIMER_H
#include <QtCore/qglobal.h>
#include <QtCore/qabstracteventdispatcher.h>
#include <QtCore/qnamespace.h>
#include <chrono>
QT_BEGIN_NAMESPACE
class QObject;
class Q_CORE_EXPORT QBasicTimer
{
Qt::TimerId m_id;
Q_DISABLE_COPY(QBasicTimer)
public:
// use the same duration type
using Duration = QAbstractEventDispatcher::Duration;
constexpr QBasicTimer() noexcept : m_id{Qt::TimerId::Invalid} {}
~QBasicTimer() { if (isActive()) stop(); }
QBasicTimer(QBasicTimer &&other) noexcept
: m_id{std::exchange(other.m_id, Qt::TimerId::Invalid)}
{}
QT_MOVE_ASSIGNMENT_OPERATOR_IMPL_VIA_MOVE_AND_SWAP(QBasicTimer)
void swap(QBasicTimer &other) noexcept { std::swap(m_id, other.m_id); }
bool isActive() const noexcept { return m_id != Qt::TimerId::Invalid; }
int timerId() const noexcept { return qToUnderlying(id()); }
Qt::TimerId id() const noexcept { return m_id; }
QT_CORE_INLINE_SINCE(6, 5)
void start(int msec, QObject *obj);
QT_CORE_INLINE_SINCE(6, 5)
void start(int msec, Qt::TimerType timerType, QObject *obj);
#if QT_CORE_REMOVED_SINCE(6, 9)
void start(std::chrono::milliseconds duration, QObject *obj);
void start(std::chrono::milliseconds duration, Qt::TimerType timerType, QObject *obj);
#endif
void start(Duration duration, QObject *obj)
{ start(duration, Qt::CoarseTimer, obj); }
void start(Duration duration, Qt::TimerType timerType, QObject *obj);
void stop();
};
Q_DECLARE_TYPEINFO(QBasicTimer, Q_RELOCATABLE_TYPE);
#if QT_CORE_INLINE_IMPL_SINCE(6, 5)
void QBasicTimer::start(int msec, QObject *obj)
{
start(std::chrono::milliseconds{msec}, obj);
}
void QBasicTimer::start(int msec, Qt::TimerType t, QObject *obj)
{
start(std::chrono::milliseconds{msec}, t, obj);
}
#endif
inline void swap(QBasicTimer &lhs, QBasicTimer &rhs) noexcept { lhs.swap(rhs); }
QT_END_NAMESPACE
#endif // QBASICTIMER_H
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