Rework the header bar for the primary window

Previously the menu was hand-composed, let's replace it with the glade files
as possible. And move the menu itself out into the source file so glade
doesn't keep overwriting it.

data/ui/MainWindow.ui

@@ -2,40 +2,34 @@
 <!-- Generated with glade 3.22.1 -->
 <interface>
   <requires lib="gtk+" version="3.20"/>
-  <menu id="primary_menu">
-    <item>
-      <attribute name="action">app.about</attribute>
-      <attribute name="label" translatable="yes">_About TuhiGUI</attribute>
-    </item>
-  </menu>
   <template class="MainWindow" parent="GtkApplicationWindow">
     <property name="can_focus">False</property>
     <property name="resizable">False</property>
     <property name="default_width">1000</property>
     <property name="default_height">700</property>
     <child type="titlebar">
-      <object class="GtkStack" id="stack_titlebar">
+      <object class="GtkHeaderBar" id="headerbar">
         <property name="visible">True</property>
         <property name="can_focus">False</property>
-        <property name="hhomogeneous">False</property>
-        <property name="vhomogeneous">False</property>
+        <property name="show_close_button">True</property>
+        <child type="title">
+          <placeholder/>
+        </child>
         <child>
-          <object class="GtkHeaderBar" id="headerbar">
+          <object class="GtkMenuButton" id="menubutton1">
             <property name="visible">True</property>
-            <property name="can_focus">False</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
             <child>
-              <object class="GtkButton" id="btn_quit">
-                <property name="label" translatable="yes">Quit</property>
+              <object class="GtkImage">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <signal name="clicked" handler="_on_quit_button_clicked" swapped="no"/>
+                <property name="can_focus">False</property>
+                <property name="icon_name">open-menu-symbolic</property>
               </object>
             </child>
           </object>
           <packing>
-            <property name="name">page0</property>
-            <property name="title" translatable="yes">page0</property>
+            <property name="pack_type">end</property>
           </packing>
         </child>
       </object>

tuhigui/window.py

@@ -21,20 +21,36 @@ from .tuhi import TuhiKeteManager
 import gi
 gi.require_version("Gtk", "3.0")
 
+MENU_XML = """
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+  <menu id="primary-menu">
+    <item>
+        <attribute name="label">About</attribute>
+        <attribute name="action">app.about</attribute>
+    </item>
+  </menu>
+</interface>
+"""
+
 
 @Gtk.Template(resource_path='/org/freedesktop/TuhiGui/ui/MainWindow.ui')
 class MainWindow(Gtk.ApplicationWindow):
     __gtype_name__ = 'MainWindow'
 
     stack_perspectives = Gtk.Template.Child()
-    primary_menu = Gtk.Template.Child()
     headerbar = Gtk.Template.Child()
+    menubutton1 = Gtk.Template.Child()
 
     def __init__(self, **kwargs):
         super().__init__(**kwargs)
 
         self._tuhi = TuhiKeteManager()
 
+        builder = Gtk.Builder.new_from_string(MENU_XML, -1)
+        menu = builder.get_object("primary-menu")
+        self.menubutton1.set_menu_model(menu)
+
         ep = ErrorPerspective()
         self._add_perspective(ep)
         self.stack_perspectives.set_visible_child_name(ep.name)
@@ -45,8 +61,6 @@ class MainWindow(Gtk.ApplicationWindow):
         else:
             self._on_dbus_online()
 
-        self._add_primary_menu()
-
     def _on_dbus_online(self, *args, **kwargs):
         dp = DrawingPerspective()
         self._add_perspective(dp)
@@ -59,12 +73,15 @@ class MainWindow(Gtk.ApplicationWindow):
         else:
             dp.device = self._tuhi.devices[0]
             active = dp
+            self.headerbar.set_title(f'Tuhi - {dp.device.name}')
 
         self.stack_perspectives.set_visible_child_name(active.name)
 
     def _on_new_device_registered(self, setupperspective, device):
         setupperspective.disconnect_by_func(self._on_new_device_registered)
 
+        self.headerbar.set_title(f'Tuhi - {device.name}')
+
         dp = self._get_child('drawing_perspective')
         dp.device = device
         self.stack_perspectives.set_visible_child_name(dp.name)
@@ -75,23 +92,5 @@ class MainWindow(Gtk.ApplicationWindow):
     def _get_child(self, name):
         return self.stack_perspectives.get_child_by_name(name)
 
-    def _add_primary_menu(self):
-        hamburger = Gtk.Image.new_from_icon_name("open-menu-symbolic",
-                                                 Gtk.IconSize.BUTTON)
-        hamburger.set_visible(True)
-        button_primary_menu = Gtk.MenuButton.new()
-        button_primary_menu.add(hamburger)
-        button_primary_menu.set_visible(True)
-        button_primary_menu.set_menu_model(self.primary_menu)
-        self.headerbar.pack_end(button_primary_menu)
-        # Place the button last in the titlebar.
-        self.headerbar.child_set_property(button_primary_menu, "position", 0)
-
     def _on_reconnect_tuhi(self, tuhi):
         self._tuhi = tuhi
-
-    @Gtk.Template.Callback("_on_quit_button_clicked")
-    def _on_quit_button_clicked(self, button):
-        window = button.get_toplevel()
-        if not window.emit("delete-event", Gdk.Event.new(Gdk.EventType.DELETE)):
-            window.destroy()