[widgets][mainwindow] Add about dialogs

beat/editor/widgets/mainwindow.py

@@ -24,6 +24,7 @@
 ###############################################################################
 
 from PyQt5.QtWidgets import QMainWindow
+from PyQt5.QtWidgets import QMessageBox
 from PyQt5.QtWidgets import QSplitter
 from PyQt5.QtWidgets import qApp
 
@@ -44,14 +45,18 @@ class MainWindow(QMainWindow):
         super(MainWindow, self).__init__(parent)
 
         menubar = self.menuBar()
+
         fileMenu = menubar.addMenu(self.tr("File"))
         quitAction = fileMenu.addAction(self.tr("Quit"))
         quitAction.setShortcut("CTRL+Q")
-        quitAction.triggered.connect(qApp.quit)
 
         preferencesMenu = menubar.addMenu(self.tr("Preferences"))
         settingsAction = preferencesMenu.addAction(self.tr("Settings"))
 
+        helpMenu = menubar.addMenu(self.tr("Help"))
+        aboutAction = helpMenu.addAction(self.tr("About"))
+        aboutQtAction = helpMenu.addAction(self.tr("About Qt"))
+
         self.assetBrowser = AssetBrowser()
         self.assetWidget = AssetWidget()
 
@@ -61,6 +66,9 @@ class MainWindow(QMainWindow):
         self.setCentralWidget(centralWidget)
 
         self.assetBrowser.json_selected.connect(self.assetWidget.load_json)
+        quitAction.triggered.connect(qApp.quit)
+        aboutAction.triggered.connect(self.show_about)
+        aboutQtAction.triggered.connect(self.show_about_qt)
         settingsAction.triggered.connect(self.show_settings)
 
         self.load_settings()
@@ -71,6 +79,24 @@ class MainWindow(QMainWindow):
         self.assetBrowser.set_prefix_root(prefix_root_path)
         self.assetWidget.set_prefix_root(prefix_root_path)
 
+    def show_about(self):
+        """About box for the application"""
+
+        QMessageBox.about(
+            self,
+            self.tr("About"),
+            self.tr(
+                f"{qApp.applicationName()}\n"
+                f"Version: {qApp.applicationVersion()}\n"
+                "Copyright Idiap Research Institute"
+            ),
+        )
+
+    def show_about_qt(self):
+        """About box for Qt"""
+
+        QMessageBox.aboutQt(self, self.tr("About Qt"))
+
     def show_settings(self):
         """Show settings dialog"""
         pass