media-keys: Add support for display switch OSD

zhangxianwei8 · raveit65 · commit d8eabb82c462 · 2018-11-25T14:36:30.000+01:00
Some laptops have a display switch mode hotkey. This is bound by
default to XF86Display. Add OSD to give people a visual feed back.

Signed-off-by: Zhang Xianwei &lt;zhang.xianwei8@zte.com.cn&gt;
diff --git a/plugins/media-keys/acme.h b/plugins/media-keys/acme.h
@@ -58,6 +58,7 @@ enum {
         LOGOUT_KEY,
         RFKILL_KEY,
         BLUETOOTH_RFKILL_KEY,
+        DISPLAY_KEY,
         HANDLED_KEYS,
 };
 
@@ -99,7 +100,8 @@ static struct {
         { ON_SCREEN_KEYBOARD_KEY, "on-screen-keyboard", NULL, NULL },
         { LOGOUT_KEY, "logout", NULL, NULL },
         { RFKILL_KEY, NULL, "XF86WLAN", NULL },
-        { BLUETOOTH_RFKILL_KEY, NULL, "XF86Bluetooth", NULL }
+        { BLUETOOTH_RFKILL_KEY, NULL, "XF86Bluetooth", NULL },
+        { DISPLAY_KEY, NULL, "XF86Display", NULL }
 };
 
 #endif /* __ACME_H__ */
diff --git a/plugins/media-keys/msd-media-keys-manager.c b/plugins/media-keys/msd-media-keys-manager.c
@@ -918,6 +918,27 @@ do_rfkill_action (MsdMediaKeysManager *manager,
                  data->property, new_state ? "true" : "false");
 }
 
+static void
+do_display_osd_action (MsdMediaKeysManager *manager)
+{
+        GdkDisplay *display;
+        int         n_monitors;
+
+        display = gdk_display_get_default ();
+        n_monitors = gdk_display_get_n_monitors (display);
+
+        dialog_init (manager);
+        if (n_monitors > 1)
+                msd_media_keys_window_set_action_custom (MSD_MEDIA_KEYS_WINDOW (manager->priv->dialog),
+                                                         "video-joined-displays-symbolic",
+                                                         _("Changing Screen Layout"));
+        else
+                msd_media_keys_window_set_action_custom (MSD_MEDIA_KEYS_WINDOW (manager->priv->dialog),
+                                                         "video-single-display-symbolic",
+                                                         _("No External Display"));
+        dialog_show (manager);
+}
+
 static gint
 find_by_application (gconstpointer a,
                      gconstpointer b)
@@ -1179,6 +1200,9 @@ do_action (MsdMediaKeysManager *manager,
         case BLUETOOTH_RFKILL_KEY:
                 do_rfkill_action (manager, TRUE);
                 break;
+        case DISPLAY_KEY:
+                do_display_osd_action (manager);
+                break;
         default:
                 g_assert_not_reached ();
         }
