new approach to selections which will help rationalize Split and similar functions. Object and Track selections are now mutually exclusive. a split will happen at (a) selection->regions (b) the intersection of edit_point and selection->tracks or (c) the region under the mouse, IFF nothing else is selected.

gtk2_ardour/editor.cc

@@ -4521,22 +4521,14 @@ Editor::get_regions_after (RegionSelection& rs, framepos_t where, const TrackVie
 
 /** Get regions using the following method:
  *
- *  Make a region list using the selected regions, unless
+ *  Make a region list using:
- *  the edit point is `mouse' and the mouse is over an unselected
+ *   (a) any selected regions
- *  region.  In this case, use just that region.
+ *   (b) the intersection of any selected tracks and the edit point(*)
+ *   (c) if neither exists, and edit_point == mouse, then whatever region is under the mouse
  *
- *  If the edit point is not 'mouse', and there are no regions selected,
+ *  (*) NOTE: in this case, if 'No Selection = All Tracks' is active, search all tracks
- *  search the list of selected tracks and return regions that are under
- *  the edit point on these tracks. If there are no selected tracks and
- *  'No Selection = All Tracks' is active, search all tracks,
  *
- *  The rationale here is that the mouse edit point is special in that
+ *  Note that we have forced the rule that selected regions and selected tracks are mutually exclusive
- *  its position describes both a time and a track; the other edit
- *  modes only describe a time.  Hence if the edit point is `mouse' we
- *  ignore selected tracks, as we assume the user means something by
- *  pointing at a particular track.  Also in this case we take note of
- *  the region directly under the edit point, as there is always just one
- *  (rather than possibly several with non-mouse edit points).
  */
 
 RegionSelection
@@ -4544,13 +4536,13 @@ Editor::get_regions_from_selection_and_edit_point ()
 {
 	RegionSelection regions;
 
-	if (_edit_point == EditAtMouse && entered_regionview && !selection->regions.contains (entered_regionview)) {
+	if (_edit_point == EditAtMouse && entered_regionview && selection->tracks.empty() && selection->regions.empty() ) {
 		regions.add (entered_regionview);
 	} else {
 		regions = selection->regions;
 	}
 
-	if (regions.empty() && _edit_point != EditAtMouse) {
+	if ( regions.empty() ) {
 		TrackViewList tracks = selection->tracks;
 
 		if (_route_groups->all_group_active_button().get_active() && tracks.empty()) {
@@ -4568,6 +4560,7 @@ Editor::get_regions_from_selection_and_edit_point ()
 			get_regions_at(regions, where, tracks);
 		}
 	}
+
 	return regions;
 }
 

gtk2_ardour/editor_ops.cc

@@ -133,6 +133,8 @@ Editor::split_regions_at (framepos_t where, RegionSelection& regions)
 {
 	bool frozen = false;
 
+	bool operating_on_region_selection = !selection->regions.empty();
+
 	list<boost::shared_ptr<Playlist> > used_playlists;
 	list<RouteTimeAxisView*> used_trackviews;
 
@@ -232,8 +234,12 @@ Editor::split_regions_at (framepos_t where, RegionSelection& regions)
 		EditorThaw(); /* Emit Signal */
 	}
 
-	if (!latest_regionviews.empty()) {
+	//IFF we had a selected region, then we should select both sides of the new region after the split.
-		selection->add (latest_regionviews);
+	//(if there is no region selection then we are working on a range selection, so no changes to region selection are necessary)
+	if( operating_on_region_selection ) {
+		if (!latest_regionviews.empty()) {
+			selection->add (latest_regionviews);
+		}
 	}
 
 }
@@ -2788,7 +2794,7 @@ Editor::separate_regions_between (const TimeSelection& ts)
 	}
 
 	if (in_command)	{
-		selection->set (new_selection);
+//		selection->set (new_selection);
 
 		commit_reversible_command ();
 	}

gtk2_ardour/selection.cc

@@ -226,6 +226,7 @@ void
 Selection::toggle (boost::shared_ptr<Playlist> pl)
 {
 	clear_time();  //enforce object/range exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 	
 	PlaylistSelection::iterator i;
 
@@ -269,6 +270,7 @@ void
 Selection::toggle (const MidiNoteSelection& midi_note_list)
 {
 	clear_time();  //enforce object/range exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 
 	for (MidiNoteSelection::const_iterator i = midi_note_list.begin(); i != midi_note_list.end(); ++i) {
 		toggle ((*i));
@@ -296,6 +298,7 @@ void
 Selection::toggle (RegionView* r)
 {
 	clear_time();  //enforce object/range exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 	
 	RegionSelection::iterator i;
 
@@ -312,6 +315,7 @@ void
 Selection::toggle (MidiRegionView* mrv)
 {
 	clear_time();   //enforce object/range exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 
 	MidiRegionSelection::iterator i;
 
@@ -328,6 +332,7 @@ void
 Selection::toggle (vector<RegionView*>& r)
 {
 	clear_time();  //enforce object/range exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 
 	RegionSelection::iterator i;
 
@@ -364,6 +369,7 @@ void
 Selection::add (boost::shared_ptr<Playlist> pl)
 {
 	clear_time();  //enforce object/range exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 	
 	if (find (playlists.begin(), playlists.end(), pl) == playlists.end()) {
 		pl->use ();
@@ -376,6 +382,7 @@ void
 Selection::add (const list<boost::shared_ptr<Playlist> >& pllist)
 {
 	clear_time();  //enforce object/range exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 	
 	bool changed = false;
 
@@ -420,6 +427,7 @@ void
 Selection::add (const MidiNoteSelection& midi_list)
 {
 	clear_time();  //enforce object/range exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 
 	const MidiNoteSelection::const_iterator b = midi_list.begin();
 	const MidiNoteSelection::const_iterator e = midi_list.end();
@@ -445,6 +453,7 @@ void
 Selection::add (vector<RegionView*>& v)
 {
 	clear_time();  //enforce object/range exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 
 	/* XXX This method or the add (const RegionSelection&) needs to go
 	 */
@@ -469,6 +478,7 @@ void
 Selection::add (const RegionSelection& rs)
 {
 	clear_time();  //enforce object/range exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 
 	/* XXX This method or the add (const vector<RegionView*>&) needs to go
 	 */
@@ -493,6 +503,7 @@ void
 Selection::add (RegionView* r)
 {
 	clear_time();  //enforce object/range exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 
 	if (find (regions.begin(), regions.end(), r) == regions.end()) {
 		bool changed = regions.add (r);
@@ -509,6 +520,7 @@ void
 Selection::add (MidiRegionView* mrv)
 {
 	clear_time();  //enforce object/range exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 
 	if (find (midi_regions.begin(), midi_regions.end(), mrv) == midi_regions.end()) {
 		midi_regions.push_back (mrv);
@@ -581,6 +593,7 @@ void
 Selection::add (boost::shared_ptr<Evoral::ControlList> cl)
 {
 	clear_time();  //enforce object/range exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 
 	boost::shared_ptr<ARDOUR::AutomationList> al
 		= boost::dynamic_pointer_cast<ARDOUR::AutomationList>(cl);
@@ -767,6 +780,7 @@ Selection::remove (boost::shared_ptr<ARDOUR::AutomationList> ac)
 void
 Selection::set (TimeAxisView* track)
 {
+	clear_objects();  //enforce object/range exclusivity
 	clear_tracks ();
 	add (track);
 }
@@ -774,6 +788,7 @@ Selection::set (TimeAxisView* track)
 void
 Selection::set (const TrackViewList& track_list)
 {
+	clear_objects();  //enforce object/range exclusivity
 	clear_tracks ();
 	add (track_list);
 }
@@ -782,6 +797,7 @@ void
 Selection::set (const MidiNoteSelection& midi_list)
 {
 	clear_time ();  //enforce region/object exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 	clear_objects ();
 	add (midi_list);
 }
@@ -790,6 +806,7 @@ void
 Selection::set (boost::shared_ptr<Playlist> playlist)
 {
 	clear_time ();  //enforce region/object exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 	clear_objects ();
 	add (playlist);
 }
@@ -806,6 +823,7 @@ void
 Selection::set (const RegionSelection& rs)
 {
 	clear_time();  //enforce region/object exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 	clear_objects();
 	regions = rs;
 	RegionsChanged(); /* EMIT SIGNAL */
@@ -815,6 +833,7 @@ void
 Selection::set (MidiRegionView* mrv)
 {
 	clear_time();  //enforce region/object exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 	clear_objects ();
 	add (mrv);
 }
@@ -823,6 +842,7 @@ void
 Selection::set (RegionView* r, bool also_clear_tracks)
 {
 	clear_time();  //enforce region/object exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 	clear_objects ();
 	if (also_clear_tracks && !Config->get_link_region_and_track_selection()) {
 		/* clear_regions() will have done this if the link preference
@@ -839,6 +859,7 @@ Selection::set (vector<RegionView*>& v)
 	bool had_regions = !regions.empty();
 
 	clear_time();  //enforce region/object exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 	clear_objects();
 
 	if (Config->get_link_region_and_track_selection()) {
@@ -863,6 +884,7 @@ long
 Selection::set (framepos_t start, framepos_t end)
 {
 	clear_objects();  //enforce region/object exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 	clear_time();
 
 	if ((start == 0 && end == 0) || end < start) {
@@ -922,6 +944,7 @@ void
 Selection::set (boost::shared_ptr<Evoral::ControlList> ac)
 {
 	clear_time();  //enforce region/object exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 	clear_objects();
 	
 	add (ac);
@@ -980,6 +1003,7 @@ void
 Selection::toggle (ControlPoint* cp)
 {
 	clear_time();  //enforce region/object exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 
 	cp->set_selected (!cp->get_selected ());
 	PointSelection::iterator i = find (points.begin(), points.end(), cp);
@@ -996,6 +1020,7 @@ void
 Selection::toggle (vector<ControlPoint*> const & cps)
 {
 	clear_time();  //enforce region/object exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 
 	for (vector<ControlPoint*>::const_iterator i = cps.begin(); i != cps.end(); ++i) {
 		toggle (*i);
@@ -1006,6 +1031,7 @@ void
 Selection::toggle (list<Selectable*> const & selectables)
 {
 	clear_time();  //enforce region/object exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 	
 	RegionView* rv;
 	ControlPoint* cp;
@@ -1038,6 +1064,7 @@ void
 Selection::set (list<Selectable*> const & selectables)
 {
 	clear_time ();  //enforce region/object exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 	clear_objects ();
 
 	if (Config->get_link_region_and_track_selection ()) {
@@ -1051,6 +1078,7 @@ void
 Selection::add (PointSelection const & s)
 {
 	clear_time ();  //enforce region/object exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 
 	for (PointSelection::const_iterator i = s.begin(); i != s.end(); ++i) {
 		points.push_back (*i);
@@ -1061,6 +1089,7 @@ void
 Selection::add (list<Selectable*> const & selectables)
 {
 	clear_time ();  //enforce region/object exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 
 	RegionView* rv;
 	ControlPoint* cp;
@@ -1102,6 +1131,7 @@ void
 Selection::add (ControlPoint* cp)
 {
 	clear_time ();  //enforce region/object exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 
 	cp->set_selected (true);
 	points.push_back (cp);
@@ -1112,6 +1142,7 @@ void
 Selection::add (vector<ControlPoint*> const & cps)
 {
 	clear_time ();  //enforce region/object exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 
 	for (vector<ControlPoint*>::const_iterator i = cps.begin(); i != cps.end(); ++i) {
 		(*i)->set_selected (true);
@@ -1124,6 +1155,7 @@ void
 Selection::set (ControlPoint* cp)
 {
 	clear_time ();  //enforce region/object exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 
 	if (cp->get_selected()) {
 		return;
@@ -1141,6 +1173,7 @@ void
 Selection::set (Marker* m)
 {
 	clear_time ();  //enforce region/object exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 	markers.clear ();
 
 	add (m);
@@ -1173,6 +1206,7 @@ void
 Selection::add (Marker* m)
 {
 	clear_time ();  //enforce region/object exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 
 	if (find (markers.begin(), markers.end(), m) == markers.end()) {
 		markers.push_back (m);
@@ -1184,6 +1218,7 @@ void
 Selection::add (const list<Marker*>& m)
 {
 	clear_time ();  //enforce region/object exclusivity
+	clear_tracks();  //enforce object/track exclusivity
 
 	markers.insert (markers.end(), m.begin(), m.end());
 	markers.sort ();