media-keys: Make sound changes quiet with Alt

<Alt>+volume control keys will change the sound, without
playing a notification sound, which can be useful when things need
to be quiet.

Note that this doesn't use the settings stored in GSettings, but
is hard-coded for those audio keys.

https://bugzilla.gnome.org/show_bug.cgi?id=651704

2 files changed, 31 insertions, 6 deletions

diff --git a/plugins/media-keys/acme.h b/plugins/media-keys/acme.h
index 73b01dfb..ac58d7b8 100644
--- a/plugins/media-keys/acme.h
+++ b/plugins/media-keys/acme.h
@@ -32,6 +32,9 @@ typedef enum {
         MUTE_KEY,
         VOLUME_DOWN_KEY,
         VOLUME_UP_KEY,
+        MUTE_QUIET_KEY,
+        VOLUME_DOWN_QUIET_KEY,
+        VOLUME_UP_QUIET_KEY,
         LOGOUT_KEY,
         EJECT_KEY,
         HOME_KEY,
@@ -74,9 +77,12 @@ static struct {
         { TOUCHPAD_KEY, NULL, "XF86TouchpadToggle", NULL },
 	{ TOUCHPAD_ON_KEY, NULL, "XF86TouchpadOn", NULL },
 	{ TOUCHPAD_OFF_KEY, NULL, "XF86TouchpadOff", NULL },
-        { MUTE_KEY, "volume-mute",NULL, NULL },
+        { MUTE_KEY, "volume-mute", NULL, NULL },
         { VOLUME_DOWN_KEY, "volume-down", NULL, NULL },
         { VOLUME_UP_KEY, "volume-up", NULL, NULL },
+        { MUTE_QUIET_KEY, NULL, "<Alt>XF86AudioMute", NULL },
+        { VOLUME_DOWN_QUIET_KEY, NULL, "<Alt>XF86AudioLowerVolume", NULL },
+        { VOLUME_UP_QUIET_KEY, NULL, "<Alt>XF86AudioRaiseVolume", NULL },
         { LOGOUT_KEY, "logout", NULL, NULL },
         { EJECT_KEY, "eject", NULL, NULL },
         { HOME_KEY, "home", NULL, NULL },
diff --git a/plugins/media-keys/gsd-media-keys-manager.c b/plugins/media-keys/gsd-media-keys-manager.c
index b2171d00..b6e9cf9f 100644
--- a/plugins/media-keys/gsd-media-keys-manager.c
+++ b/plugins/media-keys/gsd-media-keys-manager.c
@@ -609,7 +609,8 @@ update_dialog (GsdMediaKeysManager *manager,
                guint vol,
                guint max_vol,
                gboolean muted,
-               gboolean sound_changed)
+               gboolean sound_changed,
+               gboolean quiet)
 {
         vol = (int) (100 * (double) vol / (double) max_vol);
         vol = CLAMP (vol, 0, 100);
@@ -622,7 +623,7 @@ update_dialog (GsdMediaKeysManager *manager,
                                           GSD_MEDIA_KEYS_WINDOW_ACTION_VOLUME);
         dialog_show (manager);
 
-        if (sound_changed != FALSE && muted == FALSE)
+        if (quiet == FALSE && sound_changed != FALSE && muted == FALSE)
                 ca_gtk_play_for_widget (manager->priv->dialog, 0,
                                         CA_PROP_EVENT_ID, "audio-volume-change",
                                         CA_PROP_EVENT_DESCRIPTION, "volume changed through key press",
@@ -632,7 +633,8 @@ update_dialog (GsdMediaKeysManager *manager,
 
 static void
 do_sound_action (GsdMediaKeysManager *manager,
-                 int                  type)
+                 int                  type,
+                 gboolean             quiet)
 {
         gboolean old_muted, new_muted;
         guint old_vol, new_vol, max_vol, norm_vol_step;
@@ -681,7 +683,7 @@ do_sound_action (GsdMediaKeysManager *manager,
                 }
         }
 
-        update_dialog (manager, new_vol, max_vol, new_muted, sound_changed);
+        update_dialog (manager, new_vol, max_vol, new_muted, sound_changed, quiet);
 }
 
 static void
@@ -1172,7 +1174,22 @@ do_action (GsdMediaKeysManager *manager,
         case VOLUME_DOWN_KEY:
         case VOLUME_UP_KEY:
 #ifdef HAVE_PULSE
-                do_sound_action (manager, type);
+                do_sound_action (manager, type, FALSE);
+#endif /* HAVE_PULSE */
+                break;
+        case MUTE_QUIET_KEY:
+#ifdef HAVE_PULSE
+                do_sound_action (manager, MUTE_KEY, TRUE);
+#endif /* HAVE_PULSE */
+                break;
+        case VOLUME_DOWN_QUIET_KEY:
+#ifdef HAVE_PULSE
+                do_sound_action (manager, VOLUME_DOWN_KEY, TRUE);
+#endif /* HAVE_PULSE */
+                break;
+        case VOLUME_UP_QUIET_KEY:
+#ifdef HAVE_PULSE
+                do_sound_action (manager, VOLUME_UP_KEY, TRUE);
 #endif /* HAVE_PULSE */
                 break;
         case LOGOUT_KEY:
@@ -1316,6 +1333,8 @@ acme_filter_events (GdkXEvent           *xevent,
                         switch (keys[i].key_type) {
                         case VOLUME_DOWN_KEY:
                         case VOLUME_UP_KEY:
+                        case VOLUME_DOWN_QUIET_KEY:
+                        case VOLUME_UP_QUIET_KEY:
                                 /* auto-repeatable keys */
                                 if (xev->type != KeyPress) {
                                         return GDK_FILTER_CONTINUE;