xcb SD: add a persistent item for the whole desktop

(TODO: add one item per X RandR view port)

modules/services_discovery/xcb_apps.c

@@ -68,6 +68,7 @@ struct services_discovery_sys_t
 static void *Run (void *);
 static void Update (services_discovery_t *);
 static void DelItem (void *);
+static void AddDesktopItem(services_discovery_t *);
 
 static int vlc_sd_probe_Open (vlc_object_t *obj)
 {
@@ -126,6 +127,9 @@ static int Open (vlc_object_t *obj)
         goto error;
     }
 
+    /* Add a permanent item for the entire desktop */
+    AddDesktopItem (sd);
+
     p_sys->root_window = scr->root;
     xcb_change_window_attributes (conn, scr->root, XCB_CW_EVENT_MASK,
                                &(uint32_t) { XCB_EVENT_MASK_PROPERTY_CHANGE });
@@ -338,3 +342,15 @@ static void Update (services_discovery_t *sd)
     tdestroy (oldnodes, DelItem);
     p_sys->nodes = newnodes;
 }
+
+static void AddDesktopItem(services_discovery_t *sd)
+{
+    input_item_t *item;
+
+    item = input_item_NewWithType (VLC_OBJECT (sd), "screen://", _("Desktop"),
+                                   0, NULL, 0, -1, ITEM_TYPE_CARD);
+    if (item == NULL)
+        return;
+
+    services_discovery_AddItem (sd, item, NULL);
+}