[gnome-control-center/gnome-3-30] display: Redraw arrangement widget after monitor selection change

[Benjamin Berg <bberg src gnome org>]

commit 19f264af6aa592ed3055487416f6a8b9b81bf971
Author: Benjamin Berg <bberg redhat com>
Date:   Sat Jan 19 23:33:43 2019 +0100

    display: Redraw arrangement widget after monitor selection change
    
    (cherry picked from commit be3fbd8beff2149ef424e179826965681693648b)

 panels/display/cc-display-arrangement.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/panels/display/cc-display-arrangement.c b/panels/display/cc-display-arrangement.c
index dc30c7205..8c8c2691d 100644
--- a/panels/display/cc-display-arrangement.c
+++ b/panels/display/cc-display-arrangement.c
@@ -930,6 +930,8 @@ cc_display_arrangement_set_selected_output (CcDisplayArrangement *self,
   /* XXX: Could check that it actually belongs to the right config object. */
   self->selected_output = output;
 
+  gtk_widget_queue_draw (GTK_WIDGET (self));
+
   g_object_notify_by_pspec (G_OBJECT (self), props[PROP_SELECTED_OUTPUT]);
 }