handle main window delete events sensibly

gtk2_ardour/ardour_ui.h

@@ -839,6 +839,8 @@ class ARDOUR_UI : public Gtkmm2ext::UI, public ARDOUR::SessionHandlePtr
 	bool key_press_focus_accelerator_handler (Gtk::Window& window, GdkEventKey* ev, Gtkmm2ext::Bindings*);
 	bool try_gtk_accel_binding (GtkWindow* win, GdkEventKey* ev, bool translate, GdkModifierType modifier);
 	
+	bool main_window_delete_event (GdkEventAny*);
+	bool idle_ask_about_quit ();
 };
 
 #endif /* __ardour_gui_h__ */

gtk2_ardour/ardour_ui2.cc

@@ -184,9 +184,11 @@ ARDOUR_UI::setup_windows ()
 	build_menu_bar ();
 	setup_tooltips ();
 
+	_main_window.signal_delete_event().connect (sigc::mem_fun (*this, &ARDOUR_UI::main_window_delete_event));
+	
 	/* pack the main vpacker into the main window and show everything
 	 */
-	
+
 	_main_window.add (main_vpacker);
 	transport_frame.show_all ();
 
@@ -905,3 +907,4 @@ ARDOUR_UI::update_title ()
 	}
 
 }
+

gtk2_ardour/ardour_ui_dependents.cc

@@ -155,3 +155,41 @@ ARDOUR_UI::tab_window_root_drop (GtkNotebook* src,
 	
 	return 0; /* what was that? */
 }
+
+bool
+ARDOUR_UI::idle_ask_about_quit ()
+{
+	if (_session && _session->dirty()) {
+		finish ();
+	} else {
+		/* no session or session not dirty, but still ask anyway */
+
+		Gtk::MessageDialog msg (string_compose ("Quit %1?", PROGRAM_NAME),
+		                        false, /* no markup */
+		                        Gtk::MESSAGE_INFO,
+		                        Gtk::BUTTONS_YES_NO,
+		                        true); /* modal */
+		msg.set_default_response (Gtk::RESPONSE_YES);
+
+		if (msg.run() == Gtk::RESPONSE_YES) {
+			finish ();
+		}
+	}
+
+	/* not reached but keep the compiler happy */
+
+	return false;
+}
+
+bool
+ARDOUR_UI::main_window_delete_event (GdkEventAny* ev)
+{
+	/* quit the application as soon as we go idle. If we call this here,
+	 * the window manager/desktop can think we're taking too longer to
+	 * handle the "delete" event
+	 */
+	
+	Glib::signal_idle().connect (sigc::mem_fun (*this, &ARDOUR_UI::idle_ask_about_quit));	
+	
+	return true;
+}