main.cpp 范例文件

mapviewer/main.cpp
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#include <QtCore/QTextStream> #include <QtGui/QGuiApplication> #include <QtQml/QQmlApplicationEngine> #include <QtQuick/QQuickItem> static bool parseArgs(QStringList& args, QVariantMap& parameters) { while (!args.isEmpty()) { QString param = args.takeFirst(); if (param.startsWith("--help")) { QTextStream out(stdout); out << "Usage: " << endl; out << "--plugin.<parameter_name> <parameter_value> - Sets parameter = value for plugin" << endl; out.flush(); return true; } if (param.startsWith("--plugin.")) { param.remove(0, 9); if (args.isEmpty() || args.first().startsWith("--")) { parameters[param] = true; } else { QString value = args.takeFirst(); if (value == "true" || value == "on" || value == "enabled") { parameters[param] = true; } else if (value == "false" || value == "off" || value == "disable") { parameters[param] = false; } else { parameters[param] = value; } } } } return false; } int main(int argc, char *argv[]) { #if QT_CONFIG(library) const QByteArray additionalLibraryPaths = qgetenv("QTLOCATION_EXTRA_LIBRARY_PATH"); for (const QByteArray &p : additionalLibraryPaths.split(':')) QCoreApplication::addLibraryPath(QString(p)); #endif QGuiApplication::setAttribute(Qt::AA_EnableHighDpiScaling); QGuiApplication application(argc, argv); QVariantMap parameters; QStringList args(QCoreApplication::arguments()); // Fetch tokens from the environment, if present const QByteArray mapboxMapID = qgetenv("MAPBOX_MAP_ID"); const QByteArray mapboxAccessToken = qgetenv("MAPBOX_ACCESS_TOKEN"); const QByteArray hereAppID = qgetenv("HERE_APP_ID"); const QByteArray hereToken = qgetenv("HERE_TOKEN"); const QByteArray esriToken = qgetenv("ESRI_TOKEN"); if (!mapboxMapID.isEmpty()) parameters["mapbox.map_id"] = QString::fromLocal8Bit(mapboxMapID); if (!mapboxAccessToken.isEmpty()) { parameters["mapbox.access_token"] = QString::fromLocal8Bit(mapboxAccessToken); parameters["mapboxgl.access_token"] = QString::fromLocal8Bit(mapboxAccessToken); } if (!hereAppID.isEmpty()) parameters["here.app_id"] = QString::fromLocal8Bit(hereAppID); if (!hereToken.isEmpty()) parameters["here.token"] = QString::fromLocal8Bit(hereToken); if (!esriToken.isEmpty()) parameters["esri.token"] = QString::fromLocal8Bit(esriToken); if (parseArgs(args, parameters)) return 0; if (!args.contains(QStringLiteral("osm.useragent"))) parameters[QStringLiteral("osm.useragent")] = QStringLiteral("QtLocation Mapviewer example"); QQmlApplicationEngine engine; engine.addImportPath(QStringLiteral(":/imports")); engine.load(QUrl(QStringLiteral("qrc:///mapviewer.qml"))); QObject::connect(&engine, SIGNAL(quit()), qApp, SLOT(quit())); QObject *item = engine.rootObjects().first(); Q_ASSERT(item); QMetaObject::invokeMethod(item, "initializeProviders", Q_ARG(QVariant, QVariant::fromValue(parameters))); return application.exec(); }