default to an icon based terminal bell indication, and add such an icon from Tango.

setup.py

@@ -175,6 +175,8 @@ setup(name=APP_NAME.capitalize(),
                   ('share/icons/hicolor/32x32/apps', glob.glob('data/icons/32x32/apps/*.png')),
                   ('share/icons/hicolor/48x48/apps', glob.glob('data/icons/48x48/apps/*.png')),
                   ('share/icons/hicolor/16x16/actions', glob.glob('data/icons/16x16/actions/*.png')),
+                  ('share/icons/hicolor/16x16/status',
+                      glob.glob('data/icons/16x16/status/*.png')),
                  ],
       packages=['terminatorlib', 'terminatorlib.configobj',
       'terminatorlib.plugins'],

terminatorlib/config.py

@@ -151,8 +151,9 @@ DEFAULTS = {
             'default':  {
                 'allow_bold'            : True,
                 'audible_bell'          : False,
-                'visible_bell'          : True,
+                'visible_bell'          : False,
                 'urgent_bell'           : False,
+                'icon_bell'             : True,
                 'background_color'      : '#000000000000',
                 'background_darkness'   : 0.5,
                 'background_type'       : 'solid',

terminatorlib/terminal.py

@@ -632,7 +632,8 @@ for %s (%s)' % (name, urlplugin.__class__.__name__))
             self.vte.set_audible_bell(self.config['audible_bell'])
             self.vte.set_visible_bell(self.config['visible_bell'])
             self.cnxids.remove_signal(self.vte, 'beep')
-            if self.config['urgent_bell'] == True:
+            if self.config['urgent_bell'] == True or \
+               self.config['icon_bell'] == True:
                 try:
                     self.cnxids.new(self.vte, 'beep', self.on_beep)
                 except TypeError:
@@ -1181,8 +1182,11 @@ for %s (%s)' % (name, urlplugin.__class__.__name__))
 
     def on_beep(self, widget):
         """Set the urgency hint for our window"""
-        window = util.get_top_window(self)
+        if self.config['urgent_bell'] == True:
-        window.set_urgency_hint(True)
+            window = util.get_top_window(self)
+            window.set_urgency_hint(True)
+        if self.config['icon_bell'] == True:
+            self.titlebar.icon_bell()
 
     def describe_layout(self, count, parent, global_layout):
         """Describe our layout"""

terminatorlib/titlebar.py

@@ -27,6 +27,7 @@ class Titlebar(gtk.EventBox):
     groupicon = None
     grouplabel = None
     groupentry = None
+    bellicon = None
 
     __gsignals__ = {
             'clicked': (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, ()),
@@ -50,6 +51,8 @@ class Titlebar(gtk.EventBox):
         grouphbox = gtk.HBox()
         self.grouplabel = gtk.Label()
         self.groupicon = gtk.Image()
+        self.bellicon = gtk.Image()
+        self.bellicon.set_no_show_all(True)
 
         self.groupentry = gtk.Entry()
         self.groupentry.set_no_show_all(True)
@@ -74,10 +77,12 @@ class Titlebar(gtk.EventBox):
         self.ebox.add(grouphbox)
         self.ebox.show_all()
 
+        self.bellicon.set_from_icon_name('terminal-bell', gtk.ICON_SIZE_MENU)
         hbox = gtk.HBox()
         hbox.pack_start(self.ebox, False, True, 0)
         hbox.pack_start(gtk.VSeparator(), False, True, 0)
         hbox.pack_start(self.label, True, True)
+        hbox.pack_end(self.bellicon, False, False, 2)
 
         self.add(hbox)
         hbox.show_all()
@@ -218,4 +223,14 @@ class Titlebar(gtk.EventBox):
         if key == 'Escape':
             self.groupentry_cancel(None, None)
 
+    def icon_bell(self):
+        """A bell signal requires we display our bell icon"""
+        self.bellicon.show()
+        gobject.timeout_add(1000, self.icon_bell_hide)
+
+    def icon_bell_hide(self):
+        """Handle a timeout which means we now hide the bell icon"""
+        self.bellicon.hide()
+        return(False)
+
 gobject.type_register(Titlebar)