@@ -476,11 +476,10 @@ class XDotParser:

     def parse(self):

         graph = pydot.graph_from_dot_data(self.xdotcode)

-        bb = graph.get_bb()

-        if bb is None:

+        if graph.bb is None:

             return Graph()

-        xmin, ymin, xmax, ymax = map(int, bb.split(","))

+        xmin, ymin, xmax, ymax = map(int, graph.bb.split(","))

         self.xoffset = -xmin

         self.yoffset = -ymax