media-keys: Make sound changes quiet with Alt

zhangxianwei8 · raveit65 · commit b2f3af26e460 · 2018-12-03T11:40:50.000+01:00
&lt;Alt&gt;+volume control keys will change the sound, without
playing a notification sound, which can be useful when things
need to be quiet. This uses the settings stored in GSettings
for those audio keys.

Signed-off-by: Zhang Xianwei &lt;zhang.xianwei8@zte.com.cn&gt;
diff --git a/data/org.mate.SettingsDaemon.plugins.media-keys.gschema.xml.in b/data/org.mate.SettingsDaemon.plugins.media-keys.gschema.xml.in
@@ -40,6 +40,21 @@
       <summary>Volume up</summary>
       <description>Binding to raise the system volume.</description>
     </key>
+    <key name="volume-mute-quiet" type="s">
+      <default>'&lt;Alt&gt;XF86AudioMute'</default>
+      <summary>Mute the audio quietly</summary>
+      <description>Binding to mute the system volume quietly.</description>
+    </key>
+    <key name="volume-down-quiet" type="s">
+      <default>'&lt;Alt&gt;XF86AudioLowerVolume'</default>
+      <summary>Turn the volume down quietly</summary>
+      <description>Binding to lower the system volume quietly.</description>
+    </key>
+    <key name="volume-up-quiet" type="s">
+      <default>'&lt;Alt&gt;XF86AudioRaiseVolume'</default>
+      <summary>Turn the volume up quietly</summary>
+      <description>Binding to raise the system volume quietly.</description>
+    </key>
     <key name="power" type="s">
       <default>'&lt;Control&gt;&lt;Alt&gt;Delete'</default>
       <summary>Shut down</summary>
diff --git a/plugins/media-keys/acme.h b/plugins/media-keys/acme.h
@@ -32,6 +32,9 @@ enum {
         MUTE_KEY,
         VOLUME_DOWN_KEY,
         VOLUME_UP_KEY,
+        MUTE_QUIET_KEY,
+        VOLUME_DOWN_QUIET_KEY,
+        VOLUME_UP_QUIET_KEY,
         POWER_KEY,
         EJECT_KEY,
         HOME_KEY,
@@ -74,6 +77,9 @@ static struct {
         { MUTE_KEY, "volume-mute", NULL, NULL },
         { VOLUME_DOWN_KEY, "volume-down", NULL, NULL },
         { VOLUME_UP_KEY, "volume-up", NULL, NULL },
+        { MUTE_QUIET_KEY, "volume-mute-quiet", NULL, NULL },
+        { VOLUME_DOWN_QUIET_KEY, "volume-down-quiet", NULL, NULL },
+        { VOLUME_UP_QUIET_KEY, "volume-up-quiet", NULL, NULL },
         { POWER_KEY, "power", NULL, NULL },
         { EJECT_KEY, "eject", NULL, NULL },
         { HOME_KEY, "home", NULL, NULL },
diff --git a/plugins/media-keys/msd-media-keys-manager.c b/plugins/media-keys/msd-media-keys-manager.c
@@ -634,7 +634,8 @@ static void
 update_dialog (MsdMediaKeysManager *manager,
                guint                volume,
                gboolean             muted,
-               gboolean             sound_changed)
+               gboolean             sound_changed,
+               gboolean             quiet)
 {
         if (muted)
                 volume = 0.0;
@@ -651,7 +652,7 @@ update_dialog (MsdMediaKeysManager *manager,
         dialog_show (manager);
 
 #ifdef HAVE_LIBCANBERRA
-        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",
@@ -663,7 +664,9 @@ update_dialog (MsdMediaKeysManager *manager,
 }
 
 static void
-do_sound_action (MsdMediaKeysManager *manager, int type)
+do_sound_action (MsdMediaKeysManager *manager,
+                 int type,
+                 gboolean quiet)
 {
         gboolean muted;
         gboolean muted_last;
@@ -735,7 +738,8 @@ do_sound_action (MsdMediaKeysManager *manager, int type)
         update_dialog (manager,
                        CLAMP (100 * volume / (volume_max - volume_min), 0, 100),
                        muted,
-                       sound_changed);
+                       sound_changed,
+                       quiet);
 }
 
 static void
@@ -1099,7 +1103,22 @@ do_action (MsdMediaKeysManager *manager,
         case VOLUME_DOWN_KEY:
         case VOLUME_UP_KEY:
 #ifdef HAVE_LIBMATEMIXER
-                do_sound_action (manager, type);
+                do_sound_action (manager, type, FALSE);
+#endif
+                break;
+        case MUTE_QUIET_KEY:
+#ifdef HAVE_LIBMATEMIXER
+                do_sound_action (manager, MUTE_KEY, TRUE);
+#endif
+                break;
+        case VOLUME_DOWN_QUIET_KEY:
+#ifdef HAVE_LIBMATEMIXER
+                do_sound_action (manager, VOLUME_DOWN_KEY, TRUE);
+#endif
+                break;
+        case VOLUME_UP_QUIET_KEY:
+#ifdef HAVE_LIBMATEMIXER
+                do_sound_action (manager, VOLUME_UP_KEY, TRUE);
 #endif
                 break;
         case POWER_KEY:
@@ -1250,6 +1269,8 @@ 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;
