From 5a766dc24d75cc4148a45253846dbebfe7d626b2 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Fri, 8 Jan 2016 14:22:02 +0100
Subject: [PATCH] indicate monitor-state

---
 gtk2_ardour/dark.colors    |  4 +++-
 gtk2_ardour/mixer_strip.cc | 16 +++++++++++++++-
 gtk2_ardour/mixer_strip.h  |  1 +
 3 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/gtk2_ardour/dark.colors b/gtk2_ardour/dark.colors
index c46d60ac0c..2cdc39dbdd 100644
--- a/gtk2_ardour/dark.colors
+++ b/gtk2_ardour/dark.colors
@@ -228,7 +228,9 @@
     <ColorAlias name="marker drag line" alias="color 44"/>
     <ColorAlias name="marker label" alias="color 4"/>
     <ColorAlias name="marker track" alias="color 31"/>
-    <ColorAlias name="master monitor section button: fill active" alias="color 42"/>
+    <ColorAlias name="master monitor section button normal: fill active" alias="color 42"/>
+    <ColorAlias name="master monitor section button active: fill"        alias="color 40"/>
+    <ColorAlias name="master monitor section button active: fill active" alias="color 54"/>
     <ColorAlias name="measure line bar" alias="color 13"/>
     <ColorAlias name="measure line beat" alias="color 33"/>
     <ColorAlias name="meter background bottom" alias="color 46"/>
diff --git a/gtk2_ardour/mixer_strip.cc b/gtk2_ardour/mixer_strip.cc
index df7621b8ea..5247d89033 100644
--- a/gtk2_ardour/mixer_strip.cc
+++ b/gtk2_ardour/mixer_strip.cc
@@ -501,8 +501,10 @@ MixerStrip::set_route (boost::shared_ptr<Route> rt)
 		}
 		if (monitor_section_button == 0) {
 			Glib::RefPtr<Action> act = ActionManager::get_action ("Common", "ToggleMonitorSection");
+			_session->MonitorChanged.connect (route_connections, invalidator (*this), boost::bind (&MixerStrip::monitor_changed, this), gui_context());
+
 			monitor_section_button = manage (new ArdourButton);
-			monitor_section_button->set_name ("master monitor section button");
+			monitor_changed ();
 			monitor_section_button->set_related_action (act);
 			set_tooltip (monitor_section_button, _("Show/Hide Monitoring Section"));
 			mute_solo_table.attach (*monitor_section_button, 1, 2, 0, 1);
@@ -1948,6 +1950,18 @@ MixerStrip::meter_point_string (MeterPoint mp)
 	return string();
 }
 
+/** Called when the monitor-section state */
+void
+MixerStrip::monitor_changed ()
+{
+	assert (monitor_section_button);
+	if (_session->monitor_active()) {
+		monitor_section_button->set_name ("master monitor section button active");
+	} else {
+		monitor_section_button->set_name ("master monitor section button normal");
+	}
+}
+
 /** Called when the metering point has changed */
 void
 MixerStrip::meter_changed ()
diff --git a/gtk2_ardour/mixer_strip.h b/gtk2_ardour/mixer_strip.h
index 6f63acf224..f0aebf0713 100644
--- a/gtk2_ardour/mixer_strip.h
+++ b/gtk2_ardour/mixer_strip.h
@@ -180,6 +180,7 @@ class MixerStrip : public RouteUI, public Gtk::EventBox
 	ArdourButton                 meter_point_button;
 
 	void meter_changed ();
+	void monitor_changed ();
 
 	ArdourButton input_button;
 	ArdourButton output_button;