--- tasklist-widget.c.ORIG	2014-05-02 02:33:49.039939082 +0200
+++ tasklist-widget.c.fixed	2014-05-02 02:44:44.855915894 +0200
@@ -331,6 +331,8 @@
 static void               xfce_tasklist_group_button_remove              (XfceTasklistChild    *group_child);
 static void               xfce_tasklist_group_button_add_window          (XfceTasklistChild    *group_child,
                                                                           XfceTasklistChild    *window_child);
+static void               xfce_tasklist_group_button_icon_changed        (WnckClassGroup       *class_group,
+                                                                          XfceTasklistChild    *group_child);                                                                          
 static XfceTasklistChild *xfce_tasklist_group_button_new                 (WnckClassGroup       *class_group,
                                                                           XfceTasklist         *tasklist);
 
@@ -2501,10 +2503,11 @@
                                     WnckWindowState    new_state,
                                     XfceTasklistChild *child)
 {
-  gboolean       blink;
-  WnckScreen    *screen;
-  XfceTasklist  *tasklist;
-  WnckWorkspace *active_ws;
+  gboolean           blink;
+  WnckScreen        *screen;
+  XfceTasklist      *tasklist;
+  WnckWorkspace     *active_ws;
+  XfceTasklistChild *group_child;
 
   panel_return_if_fail (WNCK_IS_WINDOW (window));
   panel_return_if_fail (child->window == window);
@@ -2544,6 +2547,14 @@
         {
           /* update the icon (lucent) */
           xfce_tasklist_button_icon_changed (window, child);
+          if (child->class_group != NULL) 
+            { 
+              /* find the child for the group */
+              g_hash_table_lookup_extended (child->tasklist->class_groups,
+                                            child->class_group,
+                                            NULL, (gpointer *) &group_child);
+              xfce_tasklist_group_button_icon_changed (child->class_group, group_child);
+            }
         }
     }
 
@@ -3466,7 +3477,11 @@
 xfce_tasklist_group_button_icon_changed (WnckClassGroup    *class_group,
                                          XfceTasklistChild *group_child)
 {
-  GdkPixbuf *pixbuf;
+  GdkPixbuf         *pixbuf;
+  GdkPixbuf         *lucent = NULL;
+  GSList            *li;
+  XfceTasklistChild *child;
+  gboolean           all_minimized_in_group = TRUE;
 
   panel_return_if_fail (XFCE_IS_TASKLIST (group_child->tasklist));
   panel_return_if_fail (WNCK_IS_CLASS_GROUP (class_group));
@@ -3484,6 +3499,27 @@
   else
     pixbuf = wnck_class_group_get_icon (class_group);
 
+  /* check if all the windows in the group are minimized */
+  for (li = group_child->windows; li != NULL; li = li->next)
+    {
+      child = li->data;
+      if (!wnck_window_is_minimized (child->window)) 
+        {
+          all_minimized_in_group = FALSE;
+          break;
+        }
+    }
+  /* if the icons in the group are ALL minimized, than display
+   * a minimized lucent effect for the group icon too */
+  if (!group_child->tasklist->only_minimized
+      && group_child->tasklist->minimized_icon_lucency < 100
+      && all_minimized_in_group)
+    {
+      lucent = exo_gdk_pixbuf_lucent (pixbuf, group_child->tasklist->minimized_icon_lucency);
+      if (G_UNLIKELY (lucent != NULL))
+        pixbuf = lucent;
+    }
+
   if (G_LIKELY (pixbuf != NULL))
     xfce_panel_image_set_from_pixbuf (XFCE_PANEL_IMAGE (group_child->icon), pixbuf);
   else