Adjusted behavior of system tray icon

src/tuxclocker-qt/MainWindow.cpp

@@ -104,27 +104,34 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) {
 
 void MainWindow::setTrayIconEnabled(bool enable) {
 	if (enable) {
-		if (!m_trayIcon)
-			// This seems to make the main window not close during closeEvent
+		if (!m_trayIcon) {
 			m_trayIcon = new QSystemTrayIcon{this};
-		m_trayIcon->setIcon(QIcon{QPixmap{":/tuxclocker-logo.svg"}});
-		m_trayIcon->setToolTip("TuxClocker");
-		m_trayIcon->setContextMenu(createTrayMenu());
-		m_trayIcon->show();
-		return;
+			m_trayIcon->setIcon(QIcon{QPixmap{":/tuxclocker-logo.svg"}});
+			m_trayIcon->setToolTip("TuxClocker");
+			m_trayIcon->setContextMenu(createTrayMenu());
+			m_trayIcon->show();
+			return;
+		} else
+			return;
 	}
-	// Remove tray icon
-	if (m_trayIcon)
+
+	if (m_trayIcon) {
 		delete m_trayIcon;
+		m_trayIcon = nullptr;
+	}
 }
 
 QMenu *MainWindow::createTrayMenu() {
 	auto menu = new QMenu{this};
 
-	auto show = new QAction{_("&Maximize TuxClocker"), this};
+	auto show = new QAction{_("&Show TuxClocker"), this};
 	connect(show, &QAction::triggered, this, &MainWindow::show);
 	menu->addAction(show);
 
+	auto hide = new QAction{_("&Hide TuxClocker"), this};
+	connect(hide, &QAction::triggered, this, &MainWindow::hide);
+	menu->addAction(hide);
+
 	auto quit = new QAction{_("&Quit"), this};
 	connect(quit, &QAction::triggered, this, &QApplication::quit);
 	menu->addAction(quit);
@@ -140,7 +147,21 @@ void MainWindow::restoreGeometryFromCache(QWidget *widget) {
 }
 
 void MainWindow::closeEvent(QCloseEvent *event) {
+	// if the tray icon is active, hide the application instead of closing it
+
+	if (m_trayIcon && m_trayIcon->isVisible()) {
+		QMessageBox::information(this, tr("TuxClocker"),
+		    tr("TuxClocker will continue to run "
+		       "in the background. To completely "
+		       "exit the application, choose <b><u>Q</u>uit</b> "
+		       "from the system tray icon"));
+		hide();
+		event->ignore();
+		return;
+	}
+
 	// Save window geometry to user cache dir (XDG_CACHE_HOME on Linux)
+
 	auto cacheFilePath = Utils::cacheFilePath();
 
 	QSettings settings{cacheFilePath, QSettings::NativeFormat};