int SystemControl::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
{
    _id = QObject::qt_metacall(_c, _id, _a);
    if (_id < 0)
        return _id;
    if (_c == QMetaObject::InvokeMetaMethod) {
        switch (_id) {
        case 0: reboot(); break;
        case 1: turnOffScreen(); break;
        default: ;
        }
        _id -= 2;
    }
    return _id;
}
void ShutdownUI::showLogo()
{
    timer->stop();

    // Hide the labels and show the image
    for (int i = layout->count(); i > 0; i--) {
        layout->removeAt(0);
    }
    layout->addItem(logo);

    delete label1;
    delete label2;
    label1 = NULL;
    label2 = NULL;

    QTimer::singleShot(2000, this, SLOT(turnOffScreen()));
}