+void
+AudioRegionGainLine::region_changed (const PropertyChange& what_changed)
+{
+ PropertyChange interesting_stuff;
+
+ interesting_stuff.add (ARDOUR::Properties::start);
+ interesting_stuff.add (ARDOUR::Properties::position);
+
+ if (what_changed.contains (interesting_stuff)) {
+ _time_converter->set_origin_b (rv.region()->position());
+ }
+}