Revision control
++ // Copyright (C) 2023 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include <QGuiApplication>
++ #include <QQmlApplicationEngine>
++
++ #include "imagedownloader.h"
++ #include "app_environment.h"
++ #include "import_qml_plugins.h"
++
++ using namespace Qt::Literals::StringLiterals;
++
++ int main(int argc, char *argv[])
++ {
++ set_qt_environment();
++ QGuiApplication app(argc, argv);
++
++ QQmlApplicationEngine engine;
++ const QUrl url(u"qrc:/qt/qml/Main/main.qml"_s);
++ QObject::connect(&engine, &QQmlApplicationEngine::objectCreated, &app,
++ [url](QObject *obj, const QUrl &objUrl) {
++ if (!obj && url == objUrl)
++ QCoreApplication::exit(-1);
++ }, Qt::QueuedConnection);
++
++ engine.load(url);
++
++ if (engine.rootObjects().isEmpty())
++ return -1;
++
++ ImageDownloader downloader;
++
++ QObject::connect(&downloader, &ImageDownloader::downloadProgress, &app, [&] (double progress) {
++ QMetaObject::invokeMethod(engine.rootObjects().at(0), "downloadProgress",
++ Q_ARG(QVariant, progress));
++ });
++
++ QObject::connect(&downloader, &ImageDownloader::downloadStart, &app, [&] (int num) {
++ QMetaObject::invokeMethod(engine.rootObjects().at(0), "downloadStart",
++ Q_ARG(QVariant, num),
++ Q_ARG(QVariant, downloader.downloadCount()));
++ });
++
++ QObject::connect(&downloader, &ImageDownloader::finished, &app, [&] {
++ QMetaObject::invokeMethod(engine.rootObjects().at(0), "downloadComplete");
++ });
++
++ downloader.downloadImages();
++
++ return app.exec();
++ }