52 lines
1.2 KiB
C++
52 lines
1.2 KiB
C++
// Copyright (C) 2017 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
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#include "timemodel.h"
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int TimeModel::instances=0;
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MinuteTimer *TimeModel::timer=nullptr;
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void MinuteTimer::start()
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{
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if (!timer.isActive()) {
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time = QTime::currentTime();
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timer.start(60000-time.second()*1000, this);
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}
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}
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void MinuteTimer::stop()
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{
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timer.stop();
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}
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void MinuteTimer::timerEvent(QTimerEvent *)
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{
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QTime now = QTime::currentTime();
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if (now.second() == 59 && now.minute() == time.minute() && now.hour() == time.hour()) {
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// just missed time tick over, force it, wait extra 0.5 seconds
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time = time.addSecs(60);
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timer.start(60500, this);
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} else {
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time = now;
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timer.start(60000-time.second()*1000, this);
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}
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emit timeChanged();
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}
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TimeModel::TimeModel(QObject *parent) : QObject(parent)
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{
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if (++instances == 1) {
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if (!timer)
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timer = new MinuteTimer(QCoreApplication::instance());
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connect(timer, &MinuteTimer::timeChanged, this, &TimeModel::timeChanged);
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timer->start();
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}
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}
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TimeModel::~TimeModel()
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{
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if (--instances == 0) {
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timer->stop();
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}
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}
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