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Diffstat (limited to 'examples/positioning/logfilepositionsource/logfilepositionsource.cpp')
-rw-r--r-- | examples/positioning/logfilepositionsource/logfilepositionsource.cpp | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/examples/positioning/logfilepositionsource/logfilepositionsource.cpp b/examples/positioning/logfilepositionsource/logfilepositionsource.cpp deleted file mode 100644 index 31bb0cc3..00000000 --- a/examples/positioning/logfilepositionsource/logfilepositionsource.cpp +++ /dev/null @@ -1,136 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2017 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ -#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(":/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() -{ - lastError = QGeoPositionInfoSource::NoError; - 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 - lastError = QGeoPositionInfoSource::NoError; - if (logFile->canReadLine()) { - readNextPosition(); - } else { - lastError = QGeoPositionInfoSource::UpdateTimeoutError; - emit QGeoPositionInfoSource::errorOccurred(lastError); - } -} - -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 timestamp = QDateTime::fromString(QString(data.value(0)), Qt::ISODate); - latitude = data.value(1).toDouble(&hasLatitude); - longitude = data.value(2).toDouble(&hasLongitude); - - if (hasLatitude && hasLongitude && timestamp.isValid()) { - QGeoCoordinate coordinate(latitude, longitude); - QGeoPositionInfo info(coordinate, timestamp); - if (info.isValid()) { - lastPosition = info; - emit positionUpdated(info); - } - } - } -} - -QGeoPositionInfoSource::Error LogFilePositionSource::error() const -{ - return lastError; -} |