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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Mobility Components.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qgeoareamonitor_polling_p.h"
#include "qgeocoordinate.h"
QTM_BEGIN_NAMESPACE
#define UPDATE_INTERVAL_5S 5000
QGeoAreaMonitorPolling::QGeoAreaMonitorPolling(QObject *parent) : QGeoAreaMonitor(parent)
{
insideArea = false;
location = QGeoPositionInfoSource::createDefaultSource(this);
if (location) {
location->setUpdateInterval(UPDATE_INTERVAL_5S);
connect(location, SIGNAL(positionUpdated(QGeoPositionInfo)),
this, SLOT(positionUpdated(QGeoPositionInfo)));
}
}
QGeoAreaMonitorPolling::~QGeoAreaMonitorPolling()
{
if (location)
location->stopUpdates();
}
void QGeoAreaMonitorPolling::setCenter(const QGeoCoordinate& coordinate)
{
if (coordinate.isValid()) {
QGeoAreaMonitor::setCenter(coordinate);
checkStartStop();
}
}
void QGeoAreaMonitorPolling::setRadius(qreal radius)
{
QGeoAreaMonitor::setRadius(radius);
checkStartStop();
}
void QGeoAreaMonitorPolling::connectNotify(const char *signal)
{
if (signal == SIGNAL(areaEntered(QGeoPositionInfo)) ||
signal == SIGNAL(areaExited(QGeoPositionInfo)))
checkStartStop();
}
void QGeoAreaMonitorPolling::disconnectNotify(const char *signal)
{
if (signal == SIGNAL(areaEntered(QGeoPositionInfo)) ||
signal == SIGNAL(areaExited(QGeoPositionInfo)))
checkStartStop();
}
void QGeoAreaMonitorPolling::checkStartStop()
{
if (!location) return;
if ((QObject::receivers(SIGNAL(areaEntered(QGeoPositionInfo))) > 0 ||
QObject::receivers(SIGNAL(areaExited(QGeoPositionInfo))) > 0) &&
QGeoAreaMonitor::center().isValid() &&
QGeoAreaMonitor::radius() > qreal(0.0)) {
location->startUpdates();
} else {
location->stopUpdates();
}
}
void QGeoAreaMonitorPolling::positionUpdated(const QGeoPositionInfo &info)
{
double distance = info.coordinate().distanceTo(QGeoAreaMonitor::center());
if (distance <= QGeoAreaMonitor::radius()) {
if (!insideArea)
emit areaEntered(info);
insideArea = true;
} else if (insideArea) {
emit areaExited(info);
insideArea = false;
}
}
#include "moc_qgeoareamonitor_polling_p.cpp"
QTM_END_NAMESPACE
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