dynamically change metebridge metrics (midi|audio)

gtk2_ardour/ardour3_widget_list.rc

@@ -169,6 +169,9 @@ widget "*FaderMetricsStrip" style:highest "audio_track_metrics"
 widget "*AudioTrackMetrics" style:highest "audio_track_metrics"
 widget "*MidiTrackMetrics" style:highest "midi_track_metrics"
 widget "*AudioBusMetrics" style:highest "audio_bus_metrics"
+widget "*AudioTrackMetricsLeft" style:highest "audio_track_metrics"
+widget "*MidiTrackMetricsLeft" style:highest "midi_track_metrics"
+widget "*AudioBusMetricsLeft" style:highest "audio_bus_metrics"
 widget "*AudioTrackMetricsInactive" style:highest "audio_track_metrics_inactive"
 widget "*MidiTrackMetricsInactive" style:highest "midi_track_metrics_inactive"
 widget "*AudioBusMetricsInactive" style:highest "audio_bus_metrics_inactive"

gtk2_ardour/meter_strip.cc

@@ -55,6 +55,7 @@ using namespace std;
 PBD::Signal1<void,MeterStrip*> MeterStrip::CatchDeletion;
 PBD::Signal0<void> MeterStrip::ResetAllPeakDisplays;
 PBD::Signal1<void,RouteGroup*> MeterStrip::ResetGroupPeakDisplays;
+PBD::Signal0<void> MeterStrip::MetricChanged;
 
 
 MeterStrip::MetricPatterns MeterStrip::metric_patterns;
@@ -71,27 +72,7 @@ MeterStrip::MeterStrip (int metricmode)
 	btnbox.set_size_request(-1, 16);
 	namebx.set_size_request(18, 52);
 
-	_types.clear ();
+	set_metric_mode(metricmode);
-	switch(metricmode) {
-		case 1:
-			meter_metric_area.set_name ("AudioBusMetrics");
-			_types.push_back (DataType::AUDIO);
-			break;
-		case 2:
-			meter_metric_area.set_name ("AudioTrackMetrics");
-			_types.push_back (DataType::AUDIO);
-			break;
-		case 3:
-			meter_metric_area.set_name ("MidiTrackMetrics");
-			_types.push_back (DataType::MIDI);
-			break;
-		default:
-			meter_metric_area.set_name ("AudioMidiTrackMetrics");
-			_types.push_back (DataType::AUDIO);
-			_types.push_back (DataType::MIDI);
-			break;
-	}
-	//meter_metric_area.queue_draw ();
 
 	set_size_request_to_display_given_text (meter_metric_area, "-8888", 1, 0);
 	meter_metric_area.signal_expose_event().connect (
@@ -124,6 +105,8 @@ MeterStrip::MeterStrip (Session* sess, boost::shared_ptr<ARDOUR::Route> rt)
 	set_spacing(2);
 	RouteUI::set_route (rt);
 
+	_has_midi = false;
+
 	int meter_width = 6;
 	if (_route->shared_peak_meter()->input_streams().n_total() == 1) {
 		meter_width = 12;
@@ -287,6 +270,7 @@ MeterStrip::meter_configuration_changed (ChanCount c)
 {
 	int type = 0;
 	_types.clear ();
+	bool old_has_midi = _has_midi;
 
 	for (DataType::iterator i = DataType::begin(); i != DataType::end(); ++i) {
 		if (c.get (*i) > 0) {
@@ -301,19 +285,24 @@ MeterStrip::meter_configuration_changed (ChanCount c)
 			) {
 		meter_ticks1_area.set_name ("AudioBusMetrics");
 		meter_ticks2_area.set_name ("AudioBusMetrics");
+		_has_midi = false;
 	}
 	else if (type == (1 << DataType::AUDIO)) {
 		meter_ticks1_area.set_name ("AudioTrackMetrics");
 		meter_ticks2_area.set_name ("AudioTrackMetrics");
+		_has_midi = false;
 	}
 	else if (type == (1 << DataType::MIDI)) {
 		meter_ticks1_area.set_name ("MidiTrackMetrics");
 		meter_ticks2_area.set_name ("MidiTrackMetrics");
+		_has_midi = true;
 	} else {
 		meter_ticks1_area.set_name ("AudioMidiTrackMetrics");
 		meter_ticks2_area.set_name ("AudioMidiTrackMetrics");
+		_has_midi = true;
 	}
 
+	if (old_has_midi != _has_midi) MetricChanged();
 	on_theme_changed();
 }
 
@@ -342,22 +331,17 @@ MeterStrip::on_size_allocate (Gtk::Allocation& a)
 	VBox::on_size_allocate(a);
 }
 
-/* XXX code-copy from gain_meter.cc -- TODO consolidate
- *
- * slightly different:
- *  - ticks & label positions are swapped
- *  - more ticks for audio (longer meter by default)
- *  - right-aligned lables, unit-legend
- *  - height limitation of FastMeter::max_pattern_metric_size is included here
- */
 cairo_pattern_t*
 MeterStrip::render_metrics (Gtk::Widget& w, vector<DataType> types)
 {
 	Glib::RefPtr<Gdk::Window> win (w.get_window());
 
+	bool tickleft = true;
 	gint width, height;
 	win->get_size (width, height);
 
+	tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
+
 	cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 	cairo_t* cr = cairo_create (surface);
 	Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
@@ -491,8 +475,13 @@ MeterStrip::render_metrics (Gtk::Widget& w, vector<DataType> types)
 				fraction = log_meter (j->first);
 				snprintf (buf, sizeof (buf), "%+2d", j->first);
 				pos = height - (gint) floor (height * fraction);
-				cairo_move_to(cr, width-2.5, pos + .5);
+				if (tickleft) {
-				cairo_line_to(cr, width, pos + .5);
+					cairo_move_to(cr, width-2.5, pos + .5);
+					cairo_line_to(cr, width, pos + .5);
+				} else {
+					cairo_move_to(cr, 0, pos + .5);
+					cairo_line_to(cr, 2.5, pos + .5);
+				}
 				cairo_stroke (cr);
 				break;
 			case DataType::MIDI:
@@ -501,7 +490,11 @@ MeterStrip::render_metrics (Gtk::Widget& w, vector<DataType> types)
 				snprintf (buf, sizeof (buf), "%3d", j->first);
 				pos = 1 + height - (gint) rintf (height * fraction);
 				pos = min (pos, height);
-				cairo_arc(cr, 3, pos + .5, 1.0, 0, 2 * M_PI);
+				if (tickleft) {
+					cairo_arc(cr, width - 2.0, pos + .5, 1.0, 0, 2 * M_PI);
+				} else {
+					cairo_arc(cr, 3, pos + .5, 1.0, 0, 2 * M_PI);
+				}
 				cairo_fill(cr);
 				break;
 			}
@@ -556,7 +549,6 @@ MeterStrip::render_metrics (Gtk::Widget& w, vector<DataType> types)
 	return pattern;
 }
 
-/* XXX code-copy from gain_meter.cc -- TODO consolidate */
 gint
 MeterStrip::meter_metrics_expose (GdkEventExpose *ev)
 {
@@ -593,6 +585,37 @@ MeterStrip::meter_metrics_expose (GdkEventExpose *ev)
 	return true;
 }
 
+void
+MeterStrip::set_metric_mode (int metricmode)
+{
+	_types.clear ();
+	switch(metricmode) {
+		case 1:
+			meter_metric_area.set_name ("AudioBusMetrics");
+			_types.push_back (DataType::AUDIO);
+			break;
+		case 2:
+			meter_metric_area.set_name ("AudioTrackMetricsLeft");
+			_types.push_back (DataType::AUDIO);
+			break;
+		case 3:
+			meter_metric_area.set_name ("MidiTrackMetrics");
+			_types.push_back (DataType::MIDI);
+			break;
+		case 4:
+			meter_metric_area.set_name ("AudioTrackMetrics");
+			_types.push_back (DataType::AUDIO);
+			break;
+		default:
+			meter_metric_area.set_name ("AudioMidiTrackMetrics");
+			_types.push_back (DataType::AUDIO);
+			_types.push_back (DataType::MIDI);
+			break;
+	}
+
+	meter_metric_area.queue_draw ();
+}
+
 cairo_pattern_t*
 MeterStrip::render_ticks (Gtk::Widget& w, vector<DataType> types)
 {

gtk2_ardour/meter_strip.h

@@ -56,10 +56,14 @@ class MeterStrip : public Gtk::VBox, public RouteUI
 	static PBD::Signal1<void,MeterStrip*> CatchDeletion;
 	static PBD::Signal0<void> ResetAllPeakDisplays;
 	static PBD::Signal1<void,ARDOUR::RouteGroup*> ResetGroupPeakDisplays;
+	static PBD::Signal0<void> MetricChanged;
 
 	void reset_peak_display ();
 	void reset_group_peak_display (ARDOUR::RouteGroup*);
 
+	void set_metric_mode (int);
+	bool has_midi() { return _has_midi; }
+
   protected:
 	boost::shared_ptr<ARDOUR::Route> _route;
 	PBD::ScopedConnectionList route_connections;
@@ -106,6 +110,8 @@ class MeterStrip : public Gtk::VBox, public RouteUI
 	std::vector<ARDOUR::DataType> _types;
 
 	float max_peak;
+	bool _has_midi;
+
 	LevelMeter   *level_meter;
 	void meter_changed ();
 

gtk2_ardour/meterbridge.cc

@@ -147,6 +147,7 @@ Meterbridge::Meterbridge ()
 	MeterStrip::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&Meterbridge::remove_strip, this, _1), gui_context());
 	MeterStrip::ResetAllPeakDisplays.connect_same_thread (*this, boost::bind(&Meterbridge::reset_all_peaks, this));
 	MeterStrip::ResetGroupPeakDisplays.connect_same_thread (*this, boost::bind (&Meterbridge::reset_group_peaks, this, _1));
+	MeterStrip::MetricChanged.connect_same_thread (*this, boost::bind(&Meterbridge::update_metrics, this));
 
 	global_hpacker.set_spacing(0);
 	scroller.add (global_hpacker);
@@ -426,6 +427,7 @@ Meterbridge::add_strips (RouteList& routes)
 	}
 
 	sync_order_keys(MixerSort);
+	update_metrics();
 }
 
 void
@@ -439,6 +441,24 @@ Meterbridge::remove_strip (MeterStrip* strip)
 	if ((i = find (strips.begin(), strips.end(), strip)) != strips.end()) {
 		strips.erase (i);
 	}
+	update_metrics();
+}
+
+void
+Meterbridge::update_metrics ()
+{
+	bool have_midi = false;
+	for (list<MeterStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
+		if ( (*i)->has_midi ()) {
+			have_midi = true;
+			break;
+		}
+	}
+	if (have_midi) {
+		metrics_right->set_metric_mode(3);
+	} else {
+		metrics_right->set_metric_mode(4);
+	}
 }
 
 void

gtk2_ardour/meterbridge.h

@@ -73,6 +73,7 @@ class Meterbridge :
 
 	void add_strips (ARDOUR::RouteList&);
 	void remove_strip (MeterStrip *);
+	void update_metrics ();
 
 	void reset_all_peaks ();
 	void reset_group_peaks (ARDOUR::RouteGroup*);