added icon in system tray

mainwindow.cpp

@@ -111,15 +111,59 @@ MainWindow::MainWindow(QWidget *parent)
     }
     // load list of services
     populateList();
+    initSystemTrayIcon();
+}
+
+void MainWindow::initSystemTrayIcon()
+{
+    QMenu *trayIconMenu;
+    QAction * quitAction;
+
+    this->trayIcon = new QSystemTrayIcon;
+    this->trayIcon->setIcon(this->windowIcon());
+
+    quitAction = new QAction(tr("&Quit"), this);
+    connect(quitAction, &QAction::triggered, this, &MainWindow::quitApp);
+
+    trayIconMenu = new QMenu(this);
+    trayIconMenu->addAction(quitAction);
+    trayIcon->setContextMenu(trayIconMenu);
+
+    connect(this->trayIcon, SIGNAL(activated(QSystemTrayIcon::ActivationReason)), this, SLOT(on_trayIcon_clicked(QSystemTrayIcon::ActivationReason)));
+    this->trayIcon->show();
+}
+
+void MainWindow::on_trayIcon_clicked(QSystemTrayIcon::ActivationReason reason)
+{
+    if (reason == QSystemTrayIcon::Trigger)
+    {
+        if (this->isHidden())
+        {
+            this->show();
+        }else
+        {
+            this->hide();
+        }
+    }
+}
+
+void MainWindow::hideWindow()
+{
+    this->hide();
+}
+
+void MainWindow::showWindow()
+{
+    this->show();
 }
 
 MainWindow::~MainWindow()
 {
     delete ui;
+    QCoreApplication::quit();
 }
 
-// Close window has been clicked
-void MainWindow::closeEvent (QCloseEvent *event)
+void MainWindow::quitApp()
 {
     QMessageBox::StandardButton reply;
     QMessageBox::StandardButtons param;
@@ -144,12 +188,7 @@ void MainWindow::closeEvent (QCloseEvent *event)
                 param,
                 QMessageBox::No);
 
-        if (reply == QMessageBox::No)
-        {
-            // continuing
-            event->ignore();
-            return;
-        }else if(reply == QMessageBox::Yes)
+        if(reply == QMessageBox::Yes)
         {
             // emission of signal to downloading thread and stopping
             emit (stopDownloading(this->downloading.process));
@@ -158,7 +197,45 @@ void MainWindow::closeEvent (QCloseEvent *event)
             saveDownloadList();
         }
     }
-    event->accept();
+    delete ui;
+    QCoreApplication::quit();
+}
+
+// Close window has been clicked
+void MainWindow::closeEvent (QCloseEvent *event)
+{
+    QMessageBox msgBox;
+    QCheckBox *cb = new QCheckBox("Don't show this again ?");
+    QAbstractButton * reply;
+
+    if (!event->spontaneous() || !isVisible())
+           return;
+        if (trayIcon->isVisible() and this->settings.value("CloseCheckbox").toBool() == false)
+        {
+            msgBox.setWindowTitle("RsyncUI");
+            msgBox.setInformativeText(tr("The program will keep running in the "
+                                       "system tray. To terminate the program, "
+                                       "choose <b>Quit</b> in the context menu "
+                                       "of the system tray entry."));
+
+            msgBox.addButton(QMessageBox::Ok);
+            //msgBox.addButton(QMessageBox::No);
+            // msgBox.setDefaultButton(QMessageBox::Yes);
+            msgBox.setCheckBox(cb);
+            msgBox.exec();
+            reply = msgBox.clickedButton();
+
+            // if response is yes then loading list
+            if (cb->isChecked())
+            {
+                this->settings.setValue("CloseCheckbox", true);
+            }
+            hide();
+
+
+            //event->accept();
+            event->ignore();
+       }
 }
 
 // Populate treeview with list of files
@@ -569,7 +646,7 @@ void MainWindow::on_treeWidget_itemClicked(QTreeWidgetItem *item, bool downloadD
                 this->downloading.server = this->connexion.server;
                 this->downloading.service = this->connexion.service;
                 startDownloading();
-                // wit 1 second to process start
+                // wait 1 second to process start
                 //sleep(1);
             }
 
@@ -951,3 +1028,8 @@ void MainWindow::on_comboBox_currentIndexChanged(int index)
 {
     ui->toolBar->setToolButtonStyle((Qt::ToolButtonStyle)index);
 }
+
+void MainWindow::on_actionExit_triggered()
+{
+    quitApp();
+}