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mapzoom.cpp Example File

embedded/lightmaps/mapzoom.cpp
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 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
 ** Contact: http://www.qt-project.org/
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 ** This file is part of the demonstration applications of the Qt Toolkit.
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 ** 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:
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 ** rights. These rights are described in the Nokia Qt LGPL Exception
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 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU General
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 ** and appearing in the file LICENSE.GPL included in the packaging of this
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 ****************************************************************************/

 #include <QtWidgets>
 #include <QtNetwork>
 #include "lightmaps.h"
 #include "mapzoom.h"

 MapZoom::MapZoom()
     : QMainWindow(0)
 {
     map = new LightMaps(this);
     setCentralWidget(map);
     map->setFocus();

     QAction *osloAction = new QAction(tr("&Oslo"), this);
     QAction *berlinAction = new QAction(tr("&Berlin"), this);
     QAction *jakartaAction = new QAction(tr("&Jakarta"), this);
     QAction *nightModeAction = new QAction(tr("Night Mode"), this);
     nightModeAction->setCheckable(true);
     nightModeAction->setChecked(false);
     QAction *osmAction = new QAction(tr("About OpenStreetMap"), this);
     connect(osloAction, SIGNAL(triggered()), SLOT(chooseOslo()));
     connect(berlinAction, SIGNAL(triggered()), SLOT(chooseBerlin()));
     connect(jakartaAction, SIGNAL(triggered()), SLOT(chooseJakarta()));
     connect(nightModeAction, SIGNAL(triggered()), map, SLOT(toggleNightMode()));
     connect(osmAction, SIGNAL(triggered()), SLOT(aboutOsm()));

     QMenu *menu = menuBar()->addMenu(tr("&Options"));
     menu->addAction(osloAction);
     menu->addAction(berlinAction);
     menu->addAction(jakartaAction);
     menu->addSeparator();
     menu->addAction(nightModeAction);
     menu->addAction(osmAction);

     QNetworkConfigurationManager manager;
     if (manager.capabilities() & QNetworkConfigurationManager::NetworkSessionRequired) {
         // Get saved network configuration
         QSettings settings(QSettings::UserScope, QLatin1String("Trolltech"));
         settings.beginGroup(QLatin1String("QtNetwork"));
         const QString id =
             settings.value(QLatin1String("DefaultNetworkConfiguration")).toString();
         settings.endGroup();

         // If the saved network configuration is not currently discovered use the system
         // default
         QNetworkConfiguration config = manager.configurationFromIdentifier(id);
         if ((config.state() & QNetworkConfiguration::Discovered) !=
             QNetworkConfiguration::Discovered) {
             config = manager.defaultConfiguration();
         }

         networkSession = new QNetworkSession(config, this);
         connect(networkSession, SIGNAL(opened()), this, SLOT(sessionOpened()));

         networkSession->open();
     } else {
         networkSession = 0;
     }

     setWindowTitle(tr("Light Maps"));
 }

 void MapZoom::sessionOpened()
 {
     // Save the used configuration
     QNetworkConfiguration config = networkSession->configuration();
     QString id;
     if (config.type() == QNetworkConfiguration::UserChoice) {
         id = networkSession->sessionProperty(
                 QLatin1String("UserChoiceConfiguration")).toString();
     } else {
         id = config.identifier();
     }

     QSettings settings(QSettings::UserScope, QLatin1String("Trolltech"));
     settings.beginGroup(QLatin1String("QtNetwork"));
     settings.setValue(QLatin1String("DefaultNetworkConfiguration"), id);
     settings.endGroup();
 }

 void MapZoom::chooseOslo()
 {
     map->setCenter(59.9138204, 10.7387413);
 }

 void MapZoom::chooseBerlin()
 {
     map->setCenter(52.52958999943302, 13.383053541183472);
 }

 void MapZoom::chooseJakarta()
 {
     map->setCenter(-6.211544, 106.845172);
 }

 void MapZoom::aboutOsm()
 {
     QDesktopServices::openUrl(QUrl("http://www.openstreetmap.org"));
 }
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