--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qtmobility/examples/logfilepositionsource/logfilepositionsource.cpp	Fri Apr 16 15:51:22 2010 +0300
@@ -0,0 +1,119 @@
+/****************************************************************************
+**
+** 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 Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 <QtCore>
+
+#include "logfilepositionsource.h"
+
+LogFilePositionSource::LogFilePositionSource(QObject *parent)
+    : QGeoPositionInfoSource(parent),
+      logFile(new QFile(this)),
+      timer(new QTimer(this))
+{
+    connect(timer, SIGNAL(timeout()), this, SLOT(readNextPosition()));
+
+    logFile->setFileName(QCoreApplication::applicationDirPath()
+            + QDir::separator() + "simplelog.txt");
+    if (!logFile->open(QIODevice::ReadOnly))
+        qWarning() << "Error: cannot open source file" << logFile->fileName();
+}
+
+QGeoPositionInfo LogFilePositionSource::lastKnownPosition(bool /*fromSatellitePositioningMethodsOnly*/) const
+{
+    return lastPosition;
+}
+
+LogFilePositionSource::PositioningMethods LogFilePositionSource::supportedPositioningMethods() const
+{
+    return AllPositioningMethods;
+}
+
+int LogFilePositionSource::minimumUpdateInterval() const
+{
+    return 500;
+}
+
+void LogFilePositionSource::startUpdates()
+{
+    int interval = updateInterval();
+    if (interval < minimumUpdateInterval())
+        interval = minimumUpdateInterval();
+
+    timer->start(interval);
+}
+
+void LogFilePositionSource::stopUpdates()
+{
+    timer->stop();
+}
+
+void LogFilePositionSource::requestUpdate(int /*timeout*/)
+{
+    // For simplicity, ignore timeout - assume that if data is not available
+    // now, no data will be added to the file later
+    if (logFile->canReadLine())
+        readNextPosition();
+    else
+        emit updateTimeout();
+}
+
+void LogFilePositionSource::readNextPosition()
+{
+    QByteArray line = logFile->readLine().trimmed();
+    if (!line.isEmpty()) {
+        QList<QByteArray> data = line.split(' ');
+        double latitude;
+        double longitude;
+        bool hasLatitude = false;
+        bool hasLongitude = false;
+        QDateTime dateTime = QDateTime::fromString(QString(data.value(0)), Qt::ISODate);
+        latitude = data.value(1).toDouble(&hasLatitude);
+        longitude = data.value(2).toDouble(&hasLongitude);
+
+        if (hasLatitude && hasLongitude && dateTime.isValid()) {
+            QGeoCoordinate coordinate(latitude, longitude);
+            QGeoPositionInfo info(coordinate, dateTime);
+            if (info.isValid()) {
+                lastPosition = info;
+                emit positionUpdated(info);
+            }
+        }
+    }
+}