Progress bar seek to click

When the user clicks on the progess bar, we should seek to the location
of the click.

ocarina/components/pbar.py

@@ -28,21 +28,25 @@ class PBar(gtk.HScale):
 		self.set_range(0, 101)
 		self.set_update_policy(gtk.UPDATE_DISCONTINUOUS)
 		self.connect("change-value", self.change_value)
+		self.connect("button-press-event", self.button_down)
 		self.connect("motion-notify-event", self.mouse_motion)
 		gobject.timeout_add(500, self.update)
 		self.show()
 
 	def update(self):
-		global update
 		self.set_value(update() * 100)
 		return True
 
 	def change_value(self, scale, type, value):
-		global seek
 		seek(value / 100.0)
 
+	def button_down(self, widget, event):
+		alloc = self.get_allocation()
+		prcnt = event.x / alloc.width
+		seek(prcnt)
+		self.update()
+
 	def mouse_motion(self, widget, event):
 		alloc = self.get_allocation()
 		prcnt = event.x / float(alloc.width)
 		self.set_tooltip_text(time_at(prcnt))
-		print widget, event, alloc.width