From 7163d9db3ec9f9159c138d98950a05b039390185 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Sat, 17 Jan 2015 12:40:46 -0500
Subject: [PATCH] correctly track range selection trim and drag creation w.r.t
 playback priority

---
 gtk2_ardour/editor_drag.cc      | 12 ++++++++----
 gtk2_ardour/editor_selection.cc |  8 ++++++--
 2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/gtk2_ardour/editor_drag.cc b/gtk2_ardour/editor_drag.cc
index ba7964f5e0..14292bb741 100644
--- a/gtk2_ardour/editor_drag.cc
+++ b/gtk2_ardour/editor_drag.cc
@@ -96,8 +96,6 @@ DragManager::abort ()
 {
 	_ending = true;
 
-	cerr << "Aborting drag\n";
-
 	for (list<Drag*>::const_iterator i = _drags.begin(); i != _drags.end(); ++i) {
 		(*i)->abort ();
 		delete *i;
@@ -4390,7 +4388,7 @@ SelectionDrag::finished (GdkEvent* event, bool movement_occurred)
 
 		/* XXX what if its a music time selection? */
 		if (s) {
-			if ( s->get_play_range() && s->transport_rolling() ) {
+			if (s->get_play_range() && s->transport_rolling()) {
 				s->request_play_range (&_editor->selection->time, true);
 			} else {
 				if (ARDOUR_UI::config()->get_follow_edits() && !s->transport_rolling()) {
@@ -4400,8 +4398,14 @@ SelectionDrag::finished (GdkEvent* event, bool movement_occurred)
 						s->request_locate (_editor->get_selection().time.start());
 				}
 			}
-		}
 
+			if (_editor->get_selection().time.length() != 0) {
+				s->set_range_selection (_editor->get_selection().time.start(), _editor->get_selection().time.end_frame());
+			} else {
+				s->clear_range_selection ();
+			}
+		}
+		
 	} else {
 		/* just a click, no pointer movement.
 		 */
diff --git a/gtk2_ardour/editor_selection.cc b/gtk2_ardour/editor_selection.cc
index 5d3b7a9a79..7bcd4b0136 100644
--- a/gtk2_ardour/editor_selection.cc
+++ b/gtk2_ardour/editor_selection.cc
@@ -30,6 +30,7 @@
 
 #include "control_protocol/control_protocol.h"
 
+#include "editor_drag.h"
 #include "editor.h"
 #include "actions.h"
 #include "audio_time_axis.h"
@@ -1031,9 +1032,12 @@ Editor::time_selection_changed ()
 		ActionManager::set_sensitive (ActionManager::time_selection_sensitive_actions, true);
 	}
 
-	/* propagate into backend */
+	/* propagate into backend, but only when there is no drag or we are at
+	 * the end of a drag, otherwise this is too expensive (could case a
+	 * locate per mouse motion event.
+	 */
 
-	if (_session) {
+	if (_session && !_drags->active()) {
 		if (selection->time.length() != 0) {
 			_session->set_range_selection (selection->time.start(), selection->time.end_frame());
 		} else {