nim/Client/src/app/main.cpp

#include "LoginWindow.h"
#include "Client.h"
#include "AppTheme.h"
#include "AppConfig.h"
#include "UserSettings.h"
#include "UiHelpers.h"
#include "Updater.h"

#include <QtWidgets/QApplication>
#include <QColor>
#include <QFont>
#include <QPalette>

#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
#include <QGuiApplication>
#endif

namespace
{
    void setupHighDpi()
    {
#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
        QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
        QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
#endif
#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
        QGuiApplication::setHighDpiScaleFactorRoundingPolicy(
            Qt::HighDpiScaleFactorRoundingPolicy::PassThrough);
#endif
        qputenv("QT_AUTO_SCREEN_SCALE_FACTOR", "1");
    }
}

int main(int argc, char *argv[])
{
    setupHighDpi();

    int applyRc = 0;
    if (Updater::runApplyUpdateIfRequested(argc, argv, &applyRc))
        return applyRc;

    QApplication app(argc, argv);
    app.setQuitOnLastWindowClosed(false);
    AppConfig::instance().load();
    UserSettings::instance().load();
    AppTheme::loadFonts();
    app.setFont(AppTheme::appFont());
    app.setStyleSheet(AppTheme::globalQss());
    {
        QPalette pal = app.palette();
        pal.setColor(QPalette::ToolTipBase, QColor(QStringLiteral("#FFFFFF")));
        pal.setColor(QPalette::ToolTipText, QColor(QStringLiteral("#1A1A1A")));
        app.setPalette(pal);
    }
    app.setApplicationName(QStringLiteral("NIM"));
    app.setOrganizationName(QStringLiteral("NIM"));
    app.setWindowIcon(UiHelpers::appIcon());

    LoginWindow login;
    QObject::connect(&login, &LoginWindow::loginSucceeded,
                     [&](const QString &account, const QString &nickname) {
        auto *mainWin = new Client(account, nickname);
        mainWin->setAttribute(Qt::WA_DeleteOnClose);
        QObject::connect(mainWin, &Client::loggedOut, &login, [&login]() {
            login.prepareAfterLogout();
            login.show();
            login.raise();
            login.activateWindow();
        });
        mainWin->show();
        login.hide();
    });

    Updater::scheduleCleanupAfterStart();
    login.show();
    return app.exec();
}