fix dropzone region ordering

1 files changed, 14 insertions, 0 deletions

diff --git a/gtk2_ardour/editor_drag.cc b/gtk2_ardour/editor_drag.cc
index 470a57ade2..f2bb65b695 100644
--- a/gtk2_ardour/editor_drag.cc
+++ b/gtk2_ardour/editor_drag.cc
@@ -756,6 +756,12 @@ RegionMotionDrag::y_movement_allowed (int delta_track, double delta_layer, int s
 	return true;
 }
 
+struct DraggingViewSorter {
+	bool operator() (const DraggingView& a, const DraggingView& b) {
+		return a.time_axis_view < b.time_axis_view;
+	}
+};
+
 void
 RegionMotionDrag::motion (GdkEvent* event, bool first_move)
 {
@@ -940,6 +946,14 @@ RegionMotionDrag::motion (GdkEvent* event, bool first_move)
 		}
 	}
 
+	if (first_move) {
+		/* sort views by time_axis.
+		 * This retains track order in the dropzone, regardless
+		 * of actual selection order
+		 */
+		_views.sort (DraggingViewSorter());
+	}
+
 	for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
 
 		RegionView* rv = i->view;