Ubuntu is an ancient African word for not being able to keep up-to-da…

…te Debian

app.glade

@@ -670,7 +670,7 @@
       </object>
     </child>
     <child type="titlebar">
-      <object class="GtkHeaderBar" id="headerbar1">
+      <object class="GtkHeaderBar" id="hbWindow">
         <property name="visible">True</property>
         <property name="can_focus">False</property>
         <property name="show_close_button">True</property>

scc/gui/app.py

@@ -17,6 +17,7 @@
 from scc.gui.action_editor import ActionEditor
 from scc.gui.parser import GuiActionParser
 from scc.gui.svg_widget import SVGWidget
+from scc.gui.dwsnc import headerbar
 from scc.gui.ribar import RIBar
 from scc.paths import get_daemon_path, get_config_path, get_profiles_path
 from scc.constants import SCButtons
@@ -99,6 +100,7 @@ def setup_widgets(self):
 		self.background.connect('click', self.on_background_area_click)
 		main_area.put(self.background, 0, 0)
 		main_area.put(vbc, 0, 0) # (self.IMAGE_SIZE[0] / 2) - 90, self.IMAGE_SIZE[1] - 100)
+		headerbar(self.builder.get_object("hbWindow"))
 
 
 	def check(self):

scc/gui/button_chooser.py

@@ -13,6 +13,7 @@
 from scc.actions import HatLeftAction, HatRightAction
 from scc.actions import HatUpAction, HatDownAction
 from scc.gui.editor import Editor
+from scc.gui.dwsnc import headerbar
 from scc.gui.svg_widget import SVGWidget
 from scc.gui.gdk_to_key import keyevent_to_key
 from scc.gui.area_to_action import AREA_TO_ACTION
@@ -65,6 +66,7 @@ def setup_widgets(self):
 				self.images.append(image)
 				parent.pack_start(image, True, True, 0)
 				parent.show_all()
+		headerbar(self.builder.get_object("header"))
 
 
 	def allow_axes(self):

scc/gui/dwsnc.py

@@ -0,0 +1,64 @@
+"""
+DWSNC - Doing Weird Things in Name of Compatibility
+
+This module, when imported, applies various fixes and monkey-patching to allow
+application to run with older versions of GLib and/or GTK.
+"""
+from __future__ import unicode_literals
+from gi.repository import Gtk, GObject
+import os
+
+
+def fix_label_missing_set_XYalign_methods():
+	"""
+	Fix Gtk.Label missing set_xalign and set_yalign methods with older
+	versions of Gtk.
+	
+	Prevents crashing, but alings are ignored.
+	"""
+	Gtk.Label.set_xalign = Gtk.Label.set_yalign = lambda *a : None
+
+def child_get_property(parent, child, propname):
+	"""
+	Wrapper for child_get_property, which pygobject doesn't properly
+	introspect
+	"""
+	value = GObject.Value()
+	value.init(GObject.TYPE_INT)
+	parent.child_get_property(child, propname, value)
+	return value.get_int()
+
+
+def headerbar(bar):
+	"""
+	Moves all buttons from left to right (and vice versa) if user's desktop
+	environment is identified as Unity
+	"""
+	pass	# Not outside of Unity
+
+if "XDG_CURRENT_DESKTOP" in os.environ and "Unity" in os.environ["XDG_CURRENT_DESKTOP"].split(":"):
+	# User runs Unity
+	def _headerbar(bar):
+		children = [] + bar.get_children()
+		pack_start = []
+		pack_end = []
+		for c in children:
+			if child_get_property(bar, c, 'pack-type') == Gtk.PackType.END:
+				bar.remove(c)
+				pack_start.append(c)
+			else:
+				bar.remove(c)
+				pack_end.append(c)
+		if len(pack_end) > 1:
+			c,  pack_end = pack_end[0], pack_end[1:]
+			pack_end.append(c)
+		if (Gtk.get_major_version(), Gtk.get_minor_version()) > (3, 10):
+			# Old ubuntu has this in order, new Ubuntu has it reversed
+			pack_end = reversed(pack_end)
+		for c in pack_start: bar.pack_start(c)
+		for c in pack_end: bar.pack_end(c)
+	headerbar = _headerbar
+
+if not hasattr(Gtk.Label, "set_xalign"):
+	# GTK is old enought
+	fix_label_missing_set_XYalign_methods()

scc/gui/modeswitch_editor.py

@@ -11,6 +11,7 @@
 from scc.gui.action_editor import ActionEditor
 from scc.gui.editor import Editor
 from scc.constants import SCButtons
+from scc.gui.dwsnc import headerbar
 from scc.actions import Action, NoAction
 from scc.modifiers import ModeModifier
 from scc.profile import Profile
@@ -67,6 +68,7 @@ def setup_widgets(self):
 		for button, text in self.BUTTONS:
 			model.append(( None if button is None else button.name, text ))
 		cbButtonChooser.set_active(0)
+		headerbar(self.builder.get_object("header"))
 
 
 	def _add_action(self, button, action):