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6** This file is part of the test suite of the Qt Toolkit.
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28
29#include <QtCore>
30#include <QtTest>
31
32#include "logfilepositionsource.h"
33
34LogFilePositionSource::LogFilePositionSource(QObject *parent)
35 : QGeoPositionInfoSource(parent),
36 logFile(new QFile(this)),
37 timer(new QTimer(this))
38{
39 connect(sender: timer, SIGNAL(timeout()), receiver: this, SLOT(readNextPosition()));
40
41 logFile->setFileName(QFINDTESTDATA("simplelog.txt"));
42 if (!logFile->open(flags: QIODevice::ReadOnly))
43 qWarning() << "Error: cannot open source file" << logFile->fileName();
44}
45
46QGeoPositionInfo LogFilePositionSource::lastKnownPosition(bool /*fromSatellitePositioningMethodsOnly*/) const
47{
48 return lastPosition;
49}
50
51LogFilePositionSource::PositioningMethods LogFilePositionSource::supportedPositioningMethods() const
52{
53 return AllPositioningMethods;
54}
55
56int LogFilePositionSource::minimumUpdateInterval() const
57{
58 return 200;
59}
60
61void LogFilePositionSource::startUpdates()
62{
63 int interval = updateInterval();
64 if (interval < minimumUpdateInterval())
65 interval = minimumUpdateInterval();
66
67 timer->start(msec: interval);
68}
69
70void LogFilePositionSource::stopUpdates()
71{
72 timer->stop();
73}
74
75void 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
85void LogFilePositionSource::readNextPosition()
86{
87 QByteArray line = logFile->readLine().trimmed();
88 if (!line.isEmpty()) {
89 QList<QByteArray> data = line.split(sep: ' ');
90 double latitude;
91 double longitude;
92 bool hasLatitude = false;
93 bool hasLongitude = false;
94 QDateTime timestamp = QDateTime::fromString(s: QString(data.value(i: 0)), f: Qt::ISODate);
95 latitude = data.value(i: 1).toDouble(ok: &hasLatitude);
96 longitude = data.value(i: 2).toDouble(ok: &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(update: info);
104 }
105 }
106 }
107}
108
109QGeoPositionInfoSource::Error LogFilePositionSource::error() const
110{
111 return QGeoPositionInfoSource::NoError;
112}
113

source code of qtlocation/tests/auto/qgeoareamonitor/logfilepositionsource.cpp