From 70e739b29afba79dddc748118efa379978cf58d6 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Fri, 27 Mar 2015 00:37:47 +0100
Subject: [PATCH] Another DnD fix. fix move onto (but not over) busses.

---
 gtk2_ardour/editor_drag.cc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/gtk2_ardour/editor_drag.cc b/gtk2_ardour/editor_drag.cc
index ed529f650d..b1a1ba62d0 100644
--- a/gtk2_ardour/editor_drag.cc
+++ b/gtk2_ardour/editor_drag.cc
@@ -814,7 +814,11 @@ RegionMotionDrag::motion (GdkEvent* event, bool first_move)
 			 */
 			delta_time_axis_view = current_pointer_time_axis_view - _time_axis_views.size () + _ddropzone - _pdropzone;
 		} else {
-			delta_time_axis_view = current_pointer_time_axis_view - _last_pointer_time_axis_view;
+			/* ignore busses early on. we can't move any regions on them */
+			RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tv);
+			if (rtv && rtv->is_track()) {
+				delta_time_axis_view = current_pointer_time_axis_view - _last_pointer_time_axis_view;
+			}
 		}
 
 		/* TODO needs adjustment per DraggingView,