Fix transparency for newer versions of GTK

terminatorlib/terminator.py

@@ -372,19 +372,26 @@ class Terminator(Borg):
             Gtk.StyleContext.remove_provider_for_screen(
                 Gdk.Screen.get_default(),
                 self.style_provider)
-            self.style_provider = None
+
+        css = """
+            .terminator-terminal-window {
+                background-color: rgba(0,0,0,0);
+            }
+            """
+
         if self.config['handle_size'] in xrange(0, 6):
-            css = """
+            css += """
                 GtkPaned {
                     -GtkPaned-handle-size: %s
                 }
                 """ % self.config['handle_size']
-            self.style_provider = Gtk.CssProvider()
-            self.style_provider.load_from_data(css)
-            Gtk.StyleContext.add_provider_for_screen(
-                Gdk.Screen.get_default(), 
-                self.style_provider,     
-                Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION)
+
+        self.style_provider = Gtk.CssProvider()
+        self.style_provider.load_from_data(css)
+        Gtk.StyleContext.add_provider_for_screen(
+            Gdk.Screen.get_default(),
+            self.style_provider,
+            Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION)
 
         # Cause all the terminals to reconfigure
         for terminal in self.terminals:

terminatorlib/window.py

@@ -64,6 +64,8 @@ class Window(Container, Gtk.Window):
         GObject.type_register(Window)
         self.register_signals(Window)
 
+        self.get_style_context().add_class("terminator-terminal-window")
+
 #        self.set_property('allow-shrink', True)  # FIXME FOR GTK3, or do we need this actually?
         icon_to_apply=''