void MainWindow::on_actionFusionDark_triggered()
{
    changeTheme("dark");
    Settings.setTheme("dark");
    ui->mainToolBar->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
}
void MainWindow::on_actionFusionDark_triggered()
{
    changeTheme("dark");
    Settings.setTheme("dark");
    ui->mainToolBar->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
}