author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 16 Apr 2010 15:51:22 +0300 | |
changeset 1 | 2b40d63a9c3d |
child 4 | 90517678cc4f |
permissions | -rw-r--r-- |
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/**************************************************************************** |
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** |
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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** All rights reserved. |
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** Contact: Nokia Corporation (qt-info@nokia.com) |
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** |
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** This file is part of the Qt Mobility Components. |
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** |
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** $QT_BEGIN_LICENSE:LGPL$ |
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** No Commercial Usage |
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** This file contains pre-release code and may not be distributed. |
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** You may use this file in accordance with the terms and conditions |
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** contained in the Technology Preview License Agreement accompanying |
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** this package. |
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** |
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** GNU Lesser General Public License Usage |
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** Alternatively, this file may be used under the terms of the GNU Lesser |
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** General Public License version 2.1 as published by the Free Software |
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** Foundation and appearing in the file LICENSE.LGPL included in the |
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** packaging of this file. Please review the following information to |
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** ensure the GNU Lesser General Public License version 2.1 requirements |
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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** |
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** In addition, as a special exception, Nokia gives you certain additional |
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** rights. These rights are described in the Nokia Qt LGPL Exception |
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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** |
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** If you have questions regarding the use of this file, please contact |
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** Nokia at qt-info@nokia.com. |
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** |
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** |
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** |
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** |
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** |
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** |
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** |
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** |
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** $QT_END_LICENSE$ |
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** |
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****************************************************************************/ |
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#include <QtCore> |
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|
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#include "logfilepositionsource.h" |
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|
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LogFilePositionSource::LogFilePositionSource(QObject *parent) |
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: QGeoPositionInfoSource(parent), |
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logFile(new QFile(this)), |
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timer(new QTimer(this)) |
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{ |
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connect(timer, SIGNAL(timeout()), this, SLOT(readNextPosition())); |
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logFile->setFileName(QCoreApplication::applicationDirPath() |
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+ QDir::separator() + "simplelog.txt"); |
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if (!logFile->open(QIODevice::ReadOnly)) |
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qWarning() << "Error: cannot open source file" << logFile->fileName(); |
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} |
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|
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QGeoPositionInfo LogFilePositionSource::lastKnownPosition(bool /*fromSatellitePositioningMethodsOnly*/) const |
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{ |
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return lastPosition; |
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} |
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LogFilePositionSource::PositioningMethods LogFilePositionSource::supportedPositioningMethods() const |
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{ |
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return AllPositioningMethods; |
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} |
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|
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int LogFilePositionSource::minimumUpdateInterval() const |
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{ |
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return 500; |
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} |
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void LogFilePositionSource::startUpdates() |
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{ |
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int interval = updateInterval(); |
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if (interval < minimumUpdateInterval()) |
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interval = minimumUpdateInterval(); |
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timer->start(interval); |
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} |
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void LogFilePositionSource::stopUpdates() |
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{ |
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timer->stop(); |
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} |
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|
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void LogFilePositionSource::requestUpdate(int /*timeout*/) |
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{ |
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// For simplicity, ignore timeout - assume that if data is not available |
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// now, no data will be added to the file later |
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if (logFile->canReadLine()) |
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readNextPosition(); |
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else |
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emit updateTimeout(); |
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} |
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|
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void LogFilePositionSource::readNextPosition() |
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{ |
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QByteArray line = logFile->readLine().trimmed(); |
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if (!line.isEmpty()) { |
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QList<QByteArray> data = line.split(' '); |
2b40d63a9c3d
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
102 |
double latitude; |
2b40d63a9c3d
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
103 |
double longitude; |
2b40d63a9c3d
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
104 |
bool hasLatitude = false; |
2b40d63a9c3d
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
105 |
bool hasLongitude = false; |
2b40d63a9c3d
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
106 |
QDateTime dateTime = QDateTime::fromString(QString(data.value(0)), Qt::ISODate); |
2b40d63a9c3d
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
107 |
latitude = data.value(1).toDouble(&hasLatitude); |
2b40d63a9c3d
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
108 |
longitude = data.value(2).toDouble(&hasLongitude); |
2b40d63a9c3d
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
109 |
|
2b40d63a9c3d
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
110 |
if (hasLatitude && hasLongitude && dateTime.isValid()) { |
2b40d63a9c3d
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
111 |
QGeoCoordinate coordinate(latitude, longitude); |
2b40d63a9c3d
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
112 |
QGeoPositionInfo info(coordinate, dateTime); |
2b40d63a9c3d
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
113 |
if (info.isValid()) { |
2b40d63a9c3d
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
114 |
lastPosition = info; |
2b40d63a9c3d
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
115 |
emit positionUpdated(info); |
2b40d63a9c3d
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
116 |
} |
2b40d63a9c3d
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
117 |
} |
2b40d63a9c3d
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
118 |
} |
2b40d63a9c3d
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
119 |
} |