restore/extend/simplify ControlProtocol API to allow tracking of selection

libs/surfaces/control_protocol/control_protocol.cc

@@ -49,8 +49,20 @@ PBD::Signal0<void> ControlProtocol::VerticalZoomOutSelected;
 PBD::Signal0<void>          ControlProtocol::StepTracksDown;
 PBD::Signal0<void>          ControlProtocol::StepTracksUp;
 
+PBD::Signal1<void,boost::shared_ptr<ARDOUR::Stripable> > ControlProtocol::AddStripableToSelection;
+PBD::Signal1<void,boost::shared_ptr<ARDOUR::Stripable> > ControlProtocol::SetStripableSelection;
+PBD::Signal1<void,boost::shared_ptr<ARDOUR::Stripable> > ControlProtocol::ToggleStripableSelection;
+PBD::Signal1<void,boost::shared_ptr<ARDOUR::Stripable> > ControlProtocol::RemoveStripableFromSelection;
+PBD::Signal0<void>          ControlProtocol::ClearStripableSelection;
+
 PBD::Signal1<void,StripableNotificationListPtr> ControlProtocol::StripableSelectionChanged;
 
+Glib::Threads::Mutex ControlProtocol::first_selected_mutex;
+boost::weak_ptr<Stripable> ControlProtocol::_first_selected_stripable;
+StripableNotificationList ControlProtocol::_last_selected;
+bool ControlProtocol::selection_connected = false;
+PBD::ScopedConnection ControlProtocol::selection_connection;
+
 const std::string ControlProtocol::state_node_name ("Protocol");
 
 ControlProtocol::ControlProtocol (Session& s, string str)
@@ -58,6 +70,12 @@ ControlProtocol::ControlProtocol (Session& s, string str)
 	, _name (str)
 	, _active (false)
 {
+	if (!selection_connected) {
+		/* this is all static, connect it only once (and early), for all ControlProtocols */
+
+		StripableSelectionChanged.connect_same_thread (selection_connection, boost::bind (&ControlProtocol::stripable_selection_changed, _1));
+		selection_connected = true;
+	}
 }
 
 ControlProtocol::~ControlProtocol ()
@@ -324,3 +342,35 @@ ControlProtocol::set_state (XMLNode const & node, int /* version */)
 
 	return 0;
 }
+
+boost::shared_ptr<Stripable>
+ControlProtocol::first_selected_stripable ()
+{
+	Glib::Threads::Mutex::Lock lm (first_selected_mutex);
+	return _first_selected_stripable.lock();
+}
+
+void
+ControlProtocol::set_first_selected_stripable (boost::shared_ptr<Stripable> s)
+{
+	Glib::Threads::Mutex::Lock lm (first_selected_mutex);
+	_first_selected_stripable = s;
+}
+
+void
+ControlProtocol::stripable_selection_changed (StripableNotificationListPtr sp)
+{
+	_last_selected = *sp;
+
+	{
+		Glib::Threads::Mutex::Lock lm (first_selected_mutex);
+
+		if (!_last_selected.empty()) {
+			_first_selected_stripable = _last_selected.front().lock();
+		} else {
+			_first_selected_stripable = boost::weak_ptr<Stripable>();
+		}
+	}
+
+	cerr << "CP: selection now " << _last_selected.size() << endl;
+}

libs/surfaces/control_protocol/control_protocol/control_protocol.h

@@ -39,6 +39,7 @@ namespace ARDOUR {
 class Route;
 class Session;
 class Bundle;
+class Stripable;
 
 class LIBCONTROLCP_API ControlProtocol : public PBD::Stateful, public PBD::ScopedConnectionList, public BasicUI
 {
@@ -78,6 +79,12 @@ class LIBCONTROLCP_API ControlProtocol : public PBD::Stateful, public PBD::Scope
 	static PBD::Signal0<void> StepTracksDown;
 	static PBD::Signal0<void> StepTracksUp;
 
+	static PBD::Signal1<void,boost::shared_ptr<ARDOUR::Stripable> > AddStripableToSelection;
+	static PBD::Signal1<void,boost::shared_ptr<ARDOUR::Stripable> > SetStripableSelection;
+	static PBD::Signal1<void,boost::shared_ptr<ARDOUR::Stripable> > ToggleStripableSelection;
+	static PBD::Signal1<void,boost::shared_ptr<ARDOUR::Stripable> > RemoveStripableFromSelection;
+	static PBD::Signal0<void>          ClearStripableSelection;
+
 	/* signals that one UI (e.g. the GUI) can emit to get all other UI's to
 	   respond. Typically this will always be GUI->"others" - the GUI pays
 	   no attention to these signals.
@@ -85,6 +92,9 @@ class LIBCONTROLCP_API ControlProtocol : public PBD::Stateful, public PBD::Scope
 
 	static PBD::Signal1<void,StripableNotificationListPtr> StripableSelectionChanged;
 
+	static boost::shared_ptr<ARDOUR::Stripable> first_selected_stripable ();
+	static void set_first_selected_stripable (boost::shared_ptr<ARDOUR::Stripable>);
+
 	/* the model here is as follows:
 
 	   we imagine most control surfaces being able to control
@@ -132,6 +142,7 @@ class LIBCONTROLCP_API ControlProtocol : public PBD::Stateful, public PBD::Scope
         int set_state (XMLNode const &, int version);
 
         static const std::string state_node_name;
+        static StripableNotificationList const & last_selected() { return _last_selected; }
 
   protected:
 	std::vector<boost::shared_ptr<ARDOUR::Route> > route_table;
@@ -143,6 +154,14 @@ class LIBCONTROLCP_API ControlProtocol : public PBD::Stateful, public PBD::Scope
   private:
 	LIBCONTROLCP_LOCAL ControlProtocol (const ControlProtocol&); /* noncopyable */
         bool _active;
+
+
+        static Glib::Threads::Mutex first_selected_mutex;
+        static boost::weak_ptr<ARDOUR::Stripable> _first_selected_stripable;
+        static StripableNotificationList _last_selected;
+        static void stripable_selection_changed (StripableNotificationListPtr);
+        static bool selection_connected;
+        static PBD::ScopedConnection selection_connection;
 };
 
 extern "C" {

libs/surfaces/generic_midi/midifunction.cc

@@ -167,7 +167,8 @@ MIDIFunction::execute ()
 		if (!_argument.empty()) {
 			uint32_t rid;
 			sscanf (_argument.c_str(), "%d", &rid);
-			_ui->toggle_selection (rid, ARDOUR::PresentationInfo::Flag (ARDOUR::PresentationInfo::Route|ARDOUR::PresentationInfo::VCA));
+			// XX fix me ... need to get stripable, not RID
+			//_ui->toggle_selection (rid, ARDOUR::PresentationInfo::Flag (ARDOUR::PresentationInfo::Route|ARDOUR::PresentationInfo::VCA));
 			DEBUG_TRACE (DEBUG::GenericMidi, string_compose ("Function: SetRouteSelection = %1\n", rid));
 		}
 		break;

libs/surfaces/mackie/mackie_control_protocol.cc

@@ -289,12 +289,12 @@ MackieControlProtocol::get_sorted_stripables()
 
 		switch (_view_mode) {
 		case Mixer:
-			if (!is_hidden (s)) {
+			if (!s->presentation_info().hidden()) {
 				sorted.push_back (s);
 			}
 			break;
 		case AudioTracks:
-			if (is_audio_track(s) && !is_hidden(s)) {
+			if (is_audio_track(s) && !s->presentation_info().hidden()) {
 				sorted.push_back (s);
 			}
 			break;
@@ -306,13 +306,13 @@ MackieControlProtocol::get_sorted_stripables()
 				}
 #endif
 			} else {
-				if (!is_track(s) && !is_hidden(s)) {
+				if (!is_track(s) && !s->presentation_info().hidden()) {
 					sorted.push_back (s);
 				}
 			}
 			break;
 		case MidiTracks:
-			if (is_midi_track(s) && !is_hidden(s)) {
+			if (is_midi_track(s) && !s->presentation_info().hidden()) {
 				sorted.push_back (s);
 			}
 			break;
@@ -320,22 +320,22 @@ MackieControlProtocol::get_sorted_stripables()
 			break;
 		case Auxes: // in ardour, for now aux and buss are same. for mixbus, "Busses" are mixbuses, "Auxes" are ardour buses
 #ifdef MIXBUS
-			if (!s->mixbus() && !is_track() && !is_hidden(s))
+			if (!s->mixbus() && !is_track() && !s->presentation_info().hidden())
 #else
-			if (!is_track(s) && !is_hidden(s))
+			if (!is_track(s) && !s->presentation_info().hidden())
 #endif
 			{
 				sorted.push_back (s);
 			}
 			break;
 		case Hidden: // Show all the tracks we have hidden
-			if (is_hidden(s)) {
+			if (s->presentation_info().hidden()) {
 				// maybe separate groups
 				sorted.push_back (s);
 			}
 			break;
 		case Selected: // For example: a group (this is USER)
-			if (selected(s) && !is_hidden(s)) {
+			if (s->presentation_info().selected() && !s->presentation_info().hidden()) {
 				sorted.push_back (s);
 			}
 			break;
@@ -2039,23 +2039,19 @@ MackieControlProtocol::select_range ()
 		return;
 	}
 
-	if (stripables.size() == 1 && _last_selected_stripables.size() == 1 && stripables.front()->presentation_info().selected()) {
+	if (stripables.size() == 1 && ControlProtocol::last_selected().size() == 1 && stripables.front()->presentation_info().selected()) {
 		/* cancel selection for one and only selected stripable */
-		session->toggle_stripable_selection (stripables.front());
+		ToggleStripableSelection (stripables.front());
 	} else {
-
 		for (StripableList::iterator s = stripables.begin(); s != stripables.end(); ++s) {
 
-			if (main_modifier_state() == MODIFIER_CONTROL) {
+			if (main_modifier_state() == MODIFIER_SHIFT) {
-				DEBUG_TRACE (DEBUG::MackieControl, string_compose ("toggle selection of %1 (%2)\n", (*s)->name(), (*s)->presentation_info().order()));
+				ToggleStripableSelection (*s);
-				session->toggle_stripable_selection (*s);
 			} else {
 				if (s == stripables.begin()) {
-					DEBUG_TRACE (DEBUG::MackieControl, string_compose ("set selection of %1 (%2)\n", (*s)->name(), (*s)->presentation_info().order()));
+					SetStripableSelection (*s);
-					session->set_stripable_selection (*s);
+				} else {
-			} else {
+					AddStripableToSelection (*s);
-					DEBUG_TRACE (DEBUG::MackieControl, string_compose ("add to selection %1 (%2)\n", (*s)->name(), (*s)->presentation_info().order()));
-					session->add_stripable_selection (*s);
 				}
 			}
 		}
@@ -2351,27 +2347,6 @@ MackieControlProtocol::is_midi_track (boost::shared_ptr<Stripable> r) const
 	return boost::dynamic_pointer_cast<MidiTrack>(r) != 0;
 }
 
-bool
-MackieControlProtocol::selected (boost::shared_ptr<Stripable> r) const
-{
-	for (Selection::const_iterator i = _last_selected_stripables.begin(); i != _last_selected_stripables.end(); ++i) {
-		boost::shared_ptr<ARDOUR::Stripable> rt = (*i).lock();
-		if (rt == r) {
-			return true;
-		}
-	}
-	return false;
-}
-
-bool
-MackieControlProtocol::is_hidden (boost::shared_ptr<Stripable> r) const
-{
-	if (!r) {
-		return false;
-	}
-	return (r->presentation_info().flags() & PresentationInfo::Hidden);
-}
-
 bool
 MackieControlProtocol::is_mapped (boost::shared_ptr<Stripable> r) const
 {
@@ -2391,14 +2366,6 @@ MackieControlProtocol::update_selected (boost::shared_ptr<Stripable> s, bool bec
 {
 	if (became_selected) {
 
-		if (selected (s)) {
-			/* already selected .. mmmm */
-			cerr << "stripable " << s->name() << " already marked as selected\n";
-			return;
-		}
-
-		_last_selected_stripables.push_back (boost::weak_ptr<Stripable> (s));
-
 		check_fader_automation_state ();
 
 		/* It is possible that first_selected_route() may return null if we
@@ -2412,33 +2379,19 @@ MackieControlProtocol::update_selected (boost::shared_ptr<Stripable> s, bool bec
 			set_subview_mode (None, boost::shared_ptr<Stripable>());
 		}
 
-	} else {
-
-		for (Selection::iterator i = _last_selected_stripables.begin(); i != _last_selected_stripables.end(); ++i) {
-			boost::shared_ptr<ARDOUR::Stripable> ss = (*i).lock();
-
-			if (ss == s) {
-				_last_selected_stripables.erase (i);
-				break;
-			}
-		}
 	}
 }
 
 boost::shared_ptr<Stripable>
 MackieControlProtocol::first_selected_stripable () const
 {
-	if (_last_selected_stripables.empty()) {
+	boost::shared_ptr<Stripable> s = ControlProtocol::first_selected_stripable();
-		return boost::shared_ptr<Stripable>();
-	}
 
-	boost::shared_ptr<Stripable> r = (*(_last_selected_stripables.begin())).lock();
+	if (s) {
-
-	if (r) {
 		/* check it is on one of our surfaces */
 
-		if (is_mapped (r)) {
+		if (is_mapped (s)) {
-			return r;
+			return s;
 		}
 
 		/* stripable is not mapped. thus, the currently selected stripable is
@@ -2446,10 +2399,10 @@ MackieControlProtocol::first_selected_stripable () const
 		 * no currently selected stripable.
 		 */
 
-		r.reset ();
+		s.reset ();
 	}
 
-	return r; /* may be null */
+	return s; /* may be null */
 }
 
 boost::shared_ptr<Stripable>

libs/surfaces/mackie/mackie_control_protocol.h

@@ -138,8 +138,6 @@ class MackieControlProtocol
 	bool is_track (boost::shared_ptr<ARDOUR::Stripable>) const;
 	bool is_audio_track (boost::shared_ptr<ARDOUR::Stripable>) const;
 	bool is_midi_track (boost::shared_ptr<ARDOUR::Stripable>) const;
-	bool selected (boost::shared_ptr<ARDOUR::Stripable>) const;
-	bool is_hidden (boost::shared_ptr<ARDOUR::Stripable>) const;
 	bool is_mapped (boost::shared_ptr<ARDOUR::Stripable>) const;
 	boost::shared_ptr<ARDOUR::Stripable> first_selected_stripable () const;
 	void update_selected (boost::shared_ptr<ARDOUR::Stripable>, bool selected);
@@ -335,8 +333,6 @@ class MackieControlProtocol
 	bool                      needs_ipmidi_restart;
 	bool                     _metering_active;
 	bool                     _initialized;
-	typedef std::vector<boost::weak_ptr<ARDOUR::Stripable> > Selection;
-	Selection                _last_selected_stripables;
 	XMLNode*                 configuration_state;
 	int                      state_version;
 	int                      _last_bank[9];

libs/surfaces/osc/osc.cc

@@ -2600,9 +2600,8 @@ OSC::route_plugin_parameter_print (int ssid, int piid, int par, lo_message msg)
 void
 OSC::gui_selection_changed ()
 {
-	boost::shared_ptr<Stripable> strip;
+	boost::shared_ptr<Stripable> strip = ControlProtocol::first_selected_stripable();
 
-	strip = boost::dynamic_pointer_cast<Stripable>(session->get_editor_mixer().lock());
 	if (strip) {
 		_select = strip;
 		for (uint32_t it = 0; it < _surface.size(); ++it) {