add [master] meter to the toolbar

http://tracker.ardour.org/view.php?id=5601

gtk2_ardour/ardour_ui.cc

@@ -181,6 +181,8 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[], const char* localedir)
 	, solo_alert_button (_("solo"))
 	, feedback_alert_button (_("feedback"))
 
+	, editor_meter(0)
+
 	, speaker_config_window (X_("speaker-config"), _("Speaker Configuration"))
 	, theme_manager (X_("theme-manager"), _("Theme Manager"))
 	, key_editor (X_("key-editor"), _("Key Bindings"))
@@ -1036,6 +1038,9 @@ ARDOUR_UI::every_point_zero_something_seconds ()
 	// august 2007: actual update frequency: 25Hz (40ms), not 100Hz
 
 	SuperRapidScreenUpdate(); /* EMIT_SIGNAL */
+	if (editor_meter) {
+		editor_meter->update_meters();
+	}
 	return TRUE;
 }
 
@@ -4117,3 +4122,29 @@ ARDOUR_UI::session_format_mismatch (std::string xml_path, std::string backup_pat
 
 	msg.run ();
 }
+
+
+void
+ARDOUR_UI::reset_peak_display ()
+{
+	if (!_session || !_session->master_out() || !editor_meter) return;
+	editor_meter->clear_meters();
+}
+
+void
+ARDOUR_UI::reset_group_peak_display (RouteGroup* group)
+{
+	if (!_session || !_session->master_out()) return;
+	if (group == _session->master_out()->route_group()) {
+		reset_peak_display ();
+	}
+}
+
+void
+ARDOUR_UI::reset_route_peak_display (Route* route)
+{
+	if (!_session || !_session->master_out()) return;
+	if (_session->master_out().get() == route) {
+		reset_peak_display ();
+	}
+}

gtk2_ardour/ardour_ui.h

@@ -103,6 +103,7 @@ class SpeakerDialog;
 class ThemeManager;
 class TimeInfoBox;
 class MidiTracer;
+class LevelMeter;
 class GlobalPortMatrixWindow;
 class GUIObjectState;
 
@@ -280,6 +281,10 @@ class ARDOUR_UI : public Gtkmm2ext::UI, public ARDOUR::SessionHandlePtr
 	void get_process_buffers ();
 	void drop_process_buffers ();
 
+	void reset_peak_display ();
+	void reset_route_peak_display (ARDOUR::Route*);
+	void reset_group_peak_display (ARDOUR::RouteGroup*);
+
         const std::string& announce_string() const { return _announce_string; }
 
   protected:
@@ -443,6 +448,8 @@ class ARDOUR_UI : public Gtkmm2ext::UI, public ARDOUR::SessionHandlePtr
 	ArdourButton feedback_alert_button;
 
 	Gtk::VBox alert_box;
+	Gtk::VBox meter_box;
+	LevelMeter * editor_meter;
 
 	void solo_blink (bool);
 	void sync_blink (bool);

gtk2_ardour/ardour_ui2.cc

@@ -417,6 +417,7 @@ ARDOUR_UI::setup_transport ()
                 transport_tearoff_hbox.pack_start (_editor_transport_box, false, false);
         }
 	transport_tearoff_hbox.pack_start (alert_box, false, false);
+	transport_tearoff_hbox.pack_start (meter_box, false, false);
 
 	if (Profile->get_sae()) {
 		Image* img = manage (new Image ((::get_icon (X_("sae")))));

gtk2_ardour/ardour_ui_dialogs.cc

@@ -39,6 +39,7 @@
 #include "keyeditor.h"
 #include "location_ui.h"
 #include "main_clock.h"
+#include "meter_patterns.h"
 #include "midi_tracer.h"
 #include "mixer_ui.h"
 #include "public_editor.h"
@@ -186,6 +187,26 @@ ARDOUR_UI::set_session (Session *s)
 	point_zero_something_second_connection = Glib::signal_timeout().connect (sigc::mem_fun(*this, &ARDOUR_UI::every_point_zero_something_seconds), 40);
 
 	update_format ();
+
+	if (editor_meter) {
+		meter_box.remove(*editor_meter);
+		delete editor_meter;
+		editor_meter = 0;
+	}
+
+	if (_session && _session->master_out()) {
+		editor_meter = new LevelMeter(_session);
+		editor_meter->set_meter (_session->master_out()->shared_peak_meter().get());
+		editor_meter->clear_meters();
+		editor_meter->set_type (_session->master_out()->meter_type());
+		editor_meter->setup_meters (30, 12, 6);
+		meter_box.pack_start(*editor_meter);
+
+		ArdourMeter::ResetAllPeakDisplays.connect (sigc::mem_fun(*this, &ARDOUR_UI::reset_peak_display));
+		ArdourMeter::ResetRoutePeakDisplays.connect (sigc::mem_fun(*this, &ARDOUR_UI::reset_route_peak_display));
+		ArdourMeter::ResetGroupPeakDisplays.connect (sigc::mem_fun(*this, &ARDOUR_UI::reset_group_peak_display));
+	}
+
 }
 
 int
@@ -225,6 +246,12 @@ ARDOUR_UI::unload_session (bool hide_stuff)
 	point_one_second_connection.disconnect ();
 	point_zero_something_second_connection.disconnect();
 
+	if (editor_meter) {
+		meter_box.remove(*editor_meter);
+		delete editor_meter;
+		editor_meter = 0;
+	}
+
 	ActionManager::set_sensitive (ActionManager::session_sensitive_actions, false);
 
 	rec_button.set_sensitive (false);