Add about dialog

clapper_src/menu.js

@@ -0,0 +1,41 @@
+const { GObject, Gst, Gtk } = imports.gi;
+
+var actions = [
+    about
+];
+
+var accels = [
+    ['app.quit', ['q']],
+];
+
+function about(window, appName)
+{
+    let gstVer = [
+        Gst.VERSION_MAJOR, Gst.VERSION_MINOR, Gst.VERSION_MICRO
+    ].join('.');
+
+    let gtkVer = [
+        Gtk.MAJOR_VERSION, Gtk.MINOR_VERSION, Gtk.MICRO_VERSION
+    ].join('.');
+
+    let osInfo = [
+        'GTK version' + ': ' + gtkVer,
+        'GStreamer version' + ': ' + gstVer
+    ].join('\n');
+
+    let aboutDialog = new Gtk.AboutDialog({
+        program_name: appName,
+        comments: 'A GNOME media player powered by GStreamer',
+        version: pkg.version,
+        authors: ['Rafał Dzięgiel'],
+        artists: ['Rafał Dzięgiel'],
+        license_type: Gtk.License.GPL_3_0,
+        logo_icon_name: pkg.name,
+        website: 'https://github.com/Rafostar/clapper',
+        modal: true,
+        system_information: osInfo,
+        transient_for: window
+    });
+
+    aboutDialog.present();
+}