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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** 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 "qgeosatelliteinfosource_maemo5_p.h"
#include "liblocationwrapper_p.h"
QTM_BEGIN_NAMESPACE
QGeoSatelliteInfoSourceMaemo::QGeoSatelliteInfoSourceMaemo(QObject *parent)
: QGeoSatelliteInfoSource(parent)
{
client_id_ = -1;
timerInterval = DEFAULT_UPDATE_INTERVAL;
updateTimer = new QTimer(this);
updateTimer->setSingleShot(true);
connect(updateTimer, SIGNAL(timeout()), this, SLOT(satelliteStatus()));
requestTimer = new QTimer(this);
requestTimer->setSingleShot(true);
connect(requestTimer, SIGNAL(timeout()), this, SLOT(requestTimeoutElapsed()));
satelliteInfoState = QGeoSatelliteInfoSourceMaemo::Undefined;
}
int QGeoSatelliteInfoSourceMaemo::init()
{
if (LiblocationWrapper::instance()->inited())
return INIT_OK;
else
return INIT_FAILED;
}
void QGeoSatelliteInfoSourceMaemo::setUpdateInterval(int msec)
{
bool updateTimerInterval = false;
if (satelliteInfoState & QGeoSatelliteInfoSourceMaemo::PowersaveActive)
if (satelliteInfoState & QGeoSatelliteInfoSourceMaemo::Stopped)
updateTimerInterval = true;
timerInterval = (msec < MINIMUM_UPDATE_INTERVAL) ? MINIMUM_UPDATE_INTERVAL : msec;
if (timerInterval >= POWERSAVE_THRESHOLD)
satelliteInfoState |= QGeoSatelliteInfoSourceMaemo::PowersaveActive;
else
satelliteInfoState &= ~QGeoSatelliteInfoSourceMaemo::PowersaveActive;
// If powersave has been active when new update interval has been set,
// ensure that timer is started.
if (updateTimerInterval)
startLocationDaemon();
// Ensure that new timer interval is taken into use immediately.
activateTimer();
}
void QGeoSatelliteInfoSourceMaemo::startUpdates()
{
startLocationDaemon();
// Ensure that powersave is selected, if stopUpdates() has been called,
// but selected update interval is still greater than POWERSAVE_THRESHOLD.
if (timerInterval >= POWERSAVE_THRESHOLD)
satelliteInfoState |= QGeoSatelliteInfoSourceMaemo::PowersaveActive;
activateTimer();
}
void QGeoSatelliteInfoSourceMaemo::stopUpdates()
{
satelliteInfoState &= ~QGeoSatelliteInfoSourceMaemo::PowersaveActive;
if (!(satelliteInfoState & QGeoSatelliteInfoSourceMaemo::RequestActive)) {
updateTimer->stop();
if (LiblocationWrapper::instance()->isActive())
LiblocationWrapper::instance()->stop();
}
satelliteInfoState &= ~QGeoSatelliteInfoSourceMaemo::Started;
satelliteInfoState |= QGeoSatelliteInfoSourceMaemo::Stopped;
}
void QGeoSatelliteInfoSourceMaemo::requestUpdate(int timeout)
{
int timeoutForRequest = 0;
if (!timeout) {
if (LiblocationWrapper::instance()->isActive())
// If GPS is active, assume quick fix.
timeoutForRequest = DEFAULT_UPDATE_INTERVAL;
else
// Otherwise reserve longer time to get a fix.
timeoutForRequest = POWERSAVE_POWERON_PERIOD;
} else if (timeout < MINIMUM_UPDATE_INTERVAL) {
if (satelliteInfoState & QGeoSatelliteInfoSourceMaemo::RequestActive)
return;
emit requestTimeout();
return;
} else {
timeoutForRequest = timeout;
}
satelliteInfoState |= QGeoSatelliteInfoSourceMaemo::RequestActive;
if (!(LiblocationWrapper::instance()->isActive()))
LiblocationWrapper::instance()->start();
activateTimer();
requestTimer->start(timeoutForRequest);
}
void QGeoSatelliteInfoSourceMaemo::satelliteStatus()
{
QList<QGeoSatelliteInfo> satellitesInView =
LiblocationWrapper::instance()->satellitesInView();
QList<QGeoSatelliteInfo> satellitesInUse =
LiblocationWrapper::instance()->satellitesInUse();
if (satelliteInfoState & QGeoSatelliteInfoSourceMaemo::RequestActive) {
satelliteInfoState &= ~QGeoSatelliteInfoSourceMaemo::RequestActive;
requestTimer->stop();
if (satelliteInfoState & QGeoSatelliteInfoSourceMaemo::Stopped) {
if (LiblocationWrapper::instance()->isActive()) {
LiblocationWrapper::instance()->stop();
}
}
// Ensure that requested satellite info is emitted even though
// powersave is active and GPS would normally be off.
if ((satelliteInfoState & QGeoSatelliteInfoSourceMaemo::PowersaveActive) &&
(satelliteInfoState & QGeoSatelliteInfoSourceMaemo::Stopped)) {
if (satellitesInView.length()) {
emit satellitesInViewUpdated(satellitesInView);
emit satellitesInUseUpdated(satellitesInUse);
}
}
}
// Make sure that if update is triggered when waking up, there
// is no false position update.
if (!((satelliteInfoState & QGeoSatelliteInfoSourceMaemo::PowersaveActive) &&
(satelliteInfoState & QGeoSatelliteInfoSourceMaemo::Stopped))) {
if (satellitesInView.length()) {
emit satellitesInViewUpdated(satellitesInView);
emit satellitesInUseUpdated(satellitesInUse);
}
}
activateTimer();
}
void QGeoSatelliteInfoSourceMaemo::requestTimeoutElapsed()
{
updateTimer->stop();
emit requestTimeout();
satelliteInfoState &= ~QGeoSatelliteInfoSourceMaemo::RequestActive;
if (satelliteInfoState & QGeoSatelliteInfoSourceMaemo::Stopped)
if (LiblocationWrapper::instance()->isActive())
LiblocationWrapper::instance()->stop();
activateTimer();
}
void QGeoSatelliteInfoSourceMaemo::activateTimer()
{
if (satelliteInfoState & QGeoSatelliteInfoSourceMaemo::RequestActive) {
updateTimer->start(MINIMUM_UPDATE_INTERVAL);
return;
}
if (satelliteInfoState & QGeoSatelliteInfoSourceMaemo::PowersaveActive) {
if (satelliteInfoState & QGeoSatelliteInfoSourceMaemo::Started) {
// Cannot call stopUpdates() here since we want to keep powersave
// active.
if (LiblocationWrapper::instance()->isActive())
LiblocationWrapper::instance()->stop();
updateTimer->start(timerInterval - POWERSAVE_POWERON_PERIOD);
satelliteInfoState &= ~QGeoSatelliteInfoSourceMaemo::Started;
satelliteInfoState |= QGeoSatelliteInfoSourceMaemo::Stopped;
} else if (satelliteInfoState & QGeoSatelliteInfoSourceMaemo::Stopped) {
startLocationDaemon();
updateTimer->start(POWERSAVE_POWERON_PERIOD);
}
return;
}
if (satelliteInfoState & QGeoSatelliteInfoSourceMaemo::Started)
updateTimer->start(timerInterval);
}
void QGeoSatelliteInfoSourceMaemo::startLocationDaemon()
{
if (!(LiblocationWrapper::instance()->isActive()))
LiblocationWrapper::instance()->start();
satelliteInfoState |= QGeoSatelliteInfoSourceMaemo::Started;
satelliteInfoState &= ~QGeoSatelliteInfoSourceMaemo::Stopped;
}
#include "moc_qgeosatelliteinfosource_maemo5_p.cpp"
QTM_END_NAMESPACE
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