From 2ad60576f3975fab265bd44751c9af634f51a375 Mon Sep 17 00:00:00 2001
From: Lars Uebernickel <lars.uebernickel@canonical.com>
Date: Sun, 16 Mar 2014 17:43:06 +0100
Subject: Show a red icon in the panel when a sound is playing while mute is on

---
 src/service.vala        | 29 ++++++++++++++++++++++++++++-
 src/volume-control.vala | 16 ++++++++++++++++
 2 files changed, 44 insertions(+), 1 deletion(-)

diff --git a/src/service.vala b/src/service.vala
index 2b21275..66bb42f 100644
--- a/src/service.vala
+++ b/src/service.vala
@@ -113,6 +113,8 @@ public class IndicatorSound.Service: Object {
 	VolumeControl volume_control;
 	MediaPlayerList players;
 	uint player_action_update_id;
+	bool mute_blocks_sound;
+	uint sound_was_blocked_timeout_id;
 	Notify.Notification notification;
 	bool syncing_preferred_players = false;
 
@@ -186,7 +188,7 @@ public class IndicatorSound.Service: Object {
 		double volume = this.volume_control.get_volume ();
 		string icon;
 		if (this.volume_control.mute)
-			icon = "audio-volume-muted-panel";
+			icon = this.mute_blocks_sound ? "audio-volume-muted-blocked-panel" : "audio-volume-muted-panel";
 		else if (volume <= 0.0)
 			icon = "audio-volume-low-zero-panel";
 		else if (volume <= 0.3)
@@ -229,6 +231,31 @@ public class IndicatorSound.Service: Object {
 			this.update_root_icon ();
 		});
 
+		this.volume_control.notify["is-playing"].connect( () => {
+			if (!this.volume_control.mute) {
+				this.mute_blocks_sound = false;
+				return;
+			}
+
+			if (this.volume_control.is_playing) {
+				this.mute_blocks_sound = true;
+			}
+			else if (this.mute_blocks_sound) {
+				/* Continue to show the blocking icon five seconds after a player has tried to play something */
+				if (this.sound_was_blocked_timeout_id > 0)
+					Source.remove (this.sound_was_blocked_timeout_id);
+
+				this.sound_was_blocked_timeout_id = Timeout.add_seconds (5, () => {
+					this.mute_blocks_sound = false;
+					this.sound_was_blocked_timeout_id = 0;
+					this.update_root_icon ();
+					return false;
+				});
+			}
+
+			this.update_root_icon ();
+		});
+
 		return mute_action;
 	}
 
diff --git a/src/volume-control.vala b/src/volume-control.vala
index e994922..8f21b60 100644
--- a/src/volume-control.vala
+++ b/src/volume-control.vala
@@ -31,6 +31,7 @@ public class VolumeControl : Object
 
 	private PulseAudio.Context context;
 	private bool   _mute = true;
+	private bool   _is_playing = false;
 	private double _volume = 0.0;
 	private double _mic_volume = 0.0;
 
@@ -97,6 +98,13 @@ public class VolumeControl : Object
 			this.notify_property ("mute");
 		}
 
+		var playing = (i.state == PulseAudio.SinkState.RUNNING);
+		if (_is_playing != playing)
+		{
+			_is_playing = playing;
+			this.notify_property ("is-playing");
+		}
+
 		if (_volume != volume_to_double (i.volume.values[0]))
 		{
 			_volume = volume_to_double (i.volume.values[0]);
@@ -235,6 +243,14 @@ public class VolumeControl : Object
 		}
 	}
 
+	public bool is_playing
+	{
+		get
+		{
+			return this._is_playing;
+		}
+	}
+
 	/* Volume operations */
 	private static PulseAudio.Volume double_to_volume (double vol)
 	{
-- 
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