improv: Use GtkHeaderBar

Author: ids1024

src/application/mod.rs

@@ -25,12 +25,19 @@ fn main_keyboard(app: &gtk::Application, keyboard: Rc<Keyboard>) {
         ..add(&vbox);
     };
 
+    let header_bar = cascade! {
+        gtk::HeaderBar::new();
+        ..set_title(Some("System76 Keyboard Configurator"));
+        ..set_show_close_button(true);
+    };
+
     let window = cascade! {
         gtk::ApplicationWindow::new(app);
-        ..set_title("Keyboard Layout");
+        ..set_title("System76 Keyboard Configurator");
         ..set_border_width(10);
         ..set_position(gtk::WindowPosition::Center);
         ..set_default_size(1024, 768);
+        ..set_titlebar(Some(&header_bar));
         ..add(&scrolled_window);
     };