Update mixer strip input/output button labels from the general JACK port connection / disconnection callback so that all changes are noticed. Fixes #3638.

git-svn-id: svn://localhost/ardour2/branches/3.0@8368 d708f5d6-7413-0410-9779-e7cbd77b26cf

gtk2_ardour/mixer_strip.cc

@@ -341,6 +341,10 @@ MixerStrip::init ()
 	set_flags (get_flags() | Gtk::CAN_FOCUS);
 
 	SwitchIO.connect (sigc::mem_fun (*this, &MixerStrip::switch_io));
+
+	AudioEngine::instance()->PortConnectedOrDisconnected.connect (
+		*this, invalidator (*this), boost::bind (&MixerStrip::port_connected_or_disconnected, this, _1, _2), gui_context ()
+		);
 }
 
 MixerStrip::~MixerStrip ()
@@ -460,8 +464,6 @@ MixerStrip::set_route (boost::shared_ptr<Route> rt)
 						   _route->comment());
 
 	_route->meter_change.connect (route_connections, invalidator (*this), bind (&MixerStrip::meter_changed, this), gui_context());
-	_route->input()->changed.connect (route_connections, invalidator (*this), ui_bind (&MixerStrip::input_changed, this, _1, _2), gui_context());
-	_route->output()->changed.connect (route_connections, invalidator (*this), ui_bind (&MixerStrip::output_changed, this, _1, _2), gui_context());
 	_route->route_group_changed.connect (route_connections, invalidator (*this), boost::bind (&MixerStrip::route_group_changed, this), gui_context());
 
 	if (_route->panner()) {
@@ -1214,20 +1216,19 @@ MixerStrip::diskstream_changed ()
 }
 
 void
-MixerStrip::input_changed (IOChange /*change*/, void */*src*/)
+MixerStrip::port_connected_or_disconnected (Port* a, Port* b)
 {
-	Gtkmm2ext::UI::instance()->call_slot (invalidator (*this), boost::bind (&MixerStrip::update_input_display, this));
-	set_width_enum (_width, this);
-}
+	if (_route->input()->has_port (a) || _route->input()->has_port (b)) {
+		update_input_display ();
+		set_width_enum (_width, this);
+	}
 
-void
-MixerStrip::output_changed (IOChange /*change*/, void */*src*/)
-{
-	Gtkmm2ext::UI::instance()->call_slot (invalidator (*this), boost::bind (&MixerStrip::update_output_display, this));
-	set_width_enum (_width, this);
+	if (_route->output()->has_port (a) || _route->output()->has_port (b)) {
+		update_output_display ();
+		set_width_enum (_width, this);
+	}
 }
 
-
 void
 MixerStrip::comment_editor_done_editing()
 {

gtk2_ardour/mixer_strip.h

@@ -218,9 +218,6 @@ class MixerStrip : public RouteUI, public Gtk::EventBox
 	void new_send ();
 	void show_send_controls ();
 
-	void input_changed (ARDOUR::IOChange, void *);
-	void output_changed (ARDOUR::IOChange, void *);
-
 	PBD::ScopedConnection panstate_connection;
 	PBD::ScopedConnection panstyle_connection;
 	void connect_to_pan ();
@@ -279,6 +276,7 @@ class MixerStrip : public RouteUI, public Gtk::EventBox
 	static int scrollbar_height;
 
 	void update_io_button (boost::shared_ptr<ARDOUR::Route> route, Width width, bool input_button);
+	void port_connected_or_disconnected (ARDOUR::Port *, ARDOUR::Port *);
 };
 
 #endif /* __ardour_mixer_strip__ */

libs/ardour/ardour/audioengine.h

@@ -245,8 +245,11 @@ _	   the regular process() call to session->process() is not made.
 	/** Emitted if a JACK port is registered or unregistered */
 	PBD::Signal0<void> PortRegisteredOrUnregistered;
 
-	/** Emitted if a JACK port is connected or disconnected */
-	PBD::Signal0<void> PortConnectedOrDisconnected;
+	/** Emitted if a JACK port is connected or disconnected.
+	 *  The Port parameters are the ports being connected / disconnected, or 0 if they are not known to Ardour.
+	 *  The bool parameter is true if ports were connected, or false for disconnected.
+	 */
+	PBD::Signal3<void, Port *, Port *, bool> PortConnectedOrDisconnected;
 
 	std::string make_port_name_relative (std::string);
 	std::string make_port_name_non_relative (std::string);

libs/ardour/ardour/io.h

@@ -118,6 +118,8 @@ class IO : public SessionObject, public Latent
 	PortSet& ports() { return _ports; }
 	const PortSet& ports() const { return _ports; }
 
+	bool has_port (Port *) const;
+
 	Port *nth (uint32_t n) const {
 		if (n < _ports.num_ports()) {
 			return _ports.port(n);

libs/ardour/audioengine.cc

@@ -394,10 +394,30 @@ AudioEngine::_registration_callback (jack_port_id_t /*id*/, int /*reg*/, void* a
 }
 
 void
-AudioEngine::_connect_callback (jack_port_id_t /*id_a*/, jack_port_id_t /*id_b*/, int /*conn*/, void* arg)
+AudioEngine::_connect_callback (jack_port_id_t id_a, jack_port_id_t id_b, int conn, void* arg)
 {
 	AudioEngine* ae = static_cast<AudioEngine*> (arg);
-	ae->PortConnectedOrDisconnected (); /* EMIT SIGNAL */
+
+	GET_PRIVATE_JACK_POINTER (ae->_jack);
+
+	jack_port_t* jack_port_a = jack_port_by_id (_priv_jack, id_a);
+	jack_port_t* jack_port_b = jack_port_by_id (_priv_jack, id_b);
+
+	Port* port_a = 0;
+	Port* port_b = 0;
+
+	boost::shared_ptr<Ports> pr = ae->ports.reader ();
+	Ports::iterator i = pr->begin ();
+	while (i != pr->end() && (port_a == 0 || port_b == 0)) {
+		if (jack_port_a == (*i)->_jack_port) {
+			port_a = *i;
+		} else if (jack_port_b == (*i)->_jack_port) {
+			port_b = *i;
+		}
+		++i;
+	}
+	
+	ae->PortConnectedOrDisconnected (port_a, port_b, conn == 0 ? false : true); /* EMIT SIGNAL */
 }
 
 void

libs/ardour/io.cc

@@ -162,7 +162,7 @@ IO::disconnect (Port* our_port, string other_port, void* src)
 	if (other_port.length() == 0 || our_port == 0) {
 		return 0;
 	}
-        
+
         {
                 Glib::Mutex::Lock lm (io_lock);
                 
@@ -1612,3 +1612,10 @@ IO::physically_connected () const
 
         return false;
 }
+
+bool
+IO::has_port (Port* p) const
+{
+	Glib::Mutex::Lock lm (io_lock);
+	return _ports.contains (p);
+}