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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtDeclarative/qmlmoduleplugin.h>
#include <QtDeclarative/qml.h>
#include <qdebug.h>
#include <qdatetime.h>
#include <qbasictimer.h>
#include <qapplication.h>
// Implements a "Time" class with hour and minute properties
// that change on-the-minute yet efficiently sleep the rest
// of the time.
class MinuteTimer : public QObject
{
Q_OBJECT
public:
MinuteTimer(QObject *parent) : QObject(parent)
{
}
void start()
{
if (!timer.isActive()) {
time = QTime::currentTime();
timer.start(60000-time.second()*1000, this);
}
}
void stop()
{
timer.stop();
}
int hour() const { return time.hour(); }
int minute() const { return time.minute(); }
signals:
void timeChanged();
protected:
void timerEvent(QTimerEvent *)
{
QTime now = QTime::currentTime();
if (now.second() == 59 && now.minute() == time.minute() && now.hour() == time.hour()) {
// just missed time tick over, force it, wait extra 0.5 seconds
time.addSecs(60);
timer.start(60500, this);
} else {
time = now;
timer.start(60000-time.second()*1000, this);
}
emit timeChanged();
}
private:
QTime time;
QBasicTimer timer;
};
class Time : public QObject
{
Q_OBJECT
Q_PROPERTY(int hour READ hour NOTIFY timeChanged)
Q_PROPERTY(int minute READ minute NOTIFY timeChanged)
public:
Time(QObject *parent=0) : QObject(parent)
{
if (++instances == 1) {
if (!timer)
timer = new MinuteTimer(qApp);
connect(timer, SIGNAL(timeChanged()), this, SIGNAL(timeChanged()));
timer->start();
}
}
~Time()
{
if (--instances == 0) {
timer->stop();
}
}
int minute() const { return timer->minute(); }
int hour() const { return timer->hour(); }
signals:
void timeChanged();
private:
QTime t;
static MinuteTimer *timer;
static int instances;
};
int Time::instances=0;
MinuteTimer *Time::timer=0;
QML_DECLARE_TYPE(Time);
class QExampleQmlPlugin : public QmlModulePlugin
{
Q_OBJECT
public:
QStringList keys() const
{
return QStringList() << QLatin1String("com.nokia.TimeExample");
}
void defineModule(const QString& uri)
{
Q_ASSERT(uri == QLatin1String("com.nokia.TimeExample"));
qmlRegisterType<Time>("com.nokia.TimeExample", 1, 0, "Time", "Time");
}
};
#include "plugin.moc"
Q_EXPORT_PLUGIN2(qtimeexampleqmlplugin, QExampleQmlPlugin);
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