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28
29 #include <QtCore>
30 #include <QtTest>
31
32 #include "logfilepositionsource.h"
33
LogFilePositionSource(QObject * parent)34 LogFilePositionSource::LogFilePositionSource(QObject *parent)
35 : QGeoPositionInfoSource(parent),
36 logFile(new QFile(this)),
37 timer(new QTimer(this))
38 {
39 connect(timer, SIGNAL(timeout()), this, SLOT(readNextPosition()));
40
41 logFile->setFileName(QFINDTESTDATA("simplelog.txt"));
42 if (!logFile->open(QIODevice::ReadOnly))
43 qWarning() << "Error: cannot open source file" << logFile->fileName();
44 }
45
lastKnownPosition(bool) const46 QGeoPositionInfo LogFilePositionSource::lastKnownPosition(bool /*fromSatellitePositioningMethodsOnly*/) const
47 {
48 return lastPosition;
49 }
50
supportedPositioningMethods() const51 LogFilePositionSource::PositioningMethods LogFilePositionSource::supportedPositioningMethods() const
52 {
53 return AllPositioningMethods;
54 }
55
minimumUpdateInterval() const56 int LogFilePositionSource::minimumUpdateInterval() const
57 {
58 return 200;
59 }
60
startUpdates()61 void LogFilePositionSource::startUpdates()
62 {
63 int interval = updateInterval();
64 if (interval < minimumUpdateInterval())
65 interval = minimumUpdateInterval();
66
67 timer->start(interval);
68 }
69
stopUpdates()70 void LogFilePositionSource::stopUpdates()
71 {
72 timer->stop();
73 }
74
requestUpdate(int)75 void LogFilePositionSource::requestUpdate(int /*timeout*/)
76 {
77 // For simplicity, ignore timeout - assume that if data is not available
78 // now, no data will be added to the file later
79 if (logFile->canReadLine())
80 readNextPosition();
81 else
82 emit updateTimeout();
83 }
84
readNextPosition()85 void LogFilePositionSource::readNextPosition()
86 {
87 QByteArray line = logFile->readLine().trimmed();
88 if (!line.isEmpty()) {
89 QList<QByteArray> data = line.split(' ');
90 double latitude;
91 double longitude;
92 bool hasLatitude = false;
93 bool hasLongitude = false;
94 QDateTime timestamp = QDateTime::fromString(QString(data.value(0)), Qt::ISODate);
95 latitude = data.value(1).toDouble(&hasLatitude);
96 longitude = data.value(2).toDouble(&hasLongitude);
97
98 if (hasLatitude && hasLongitude && timestamp.isValid()) {
99 QGeoCoordinate coordinate(latitude, longitude);
100 QGeoPositionInfo info(coordinate, timestamp);
101 if (info.isValid()) {
102 lastPosition = info;
103 emit positionUpdated(info);
104 }
105 }
106 }
107 }
108
error() const109 QGeoPositionInfoSource::Error LogFilePositionSource::error() const
110 {
111 return QGeoPositionInfoSource::NoError;
112 }
113