window: Hide titlebox when undecorated

We don't draw or size-allocate the titlebar when the window is
fullscreen or undecorated, so reflect this by setting it to
!child_visible. This can happen when changing the value of the decorated
property while the window is shown.

diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index c9ca7faef6b47a55f6c98b8853fd6ccae02e496f..9f6676c8055096bfef3ae2c168af7fa96b61a5f8 100644 (file)
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -5806,7 +5806,8 @@ update_csd_visibility (GtkWindow *window)
   if (priv->title_box == NULL)
     return FALSE;
 
-  visible = !priv->fullscreen;
+  visible = !priv->fullscreen &&
+            priv->decorated;
 
   gtk_widget_set_child_visible (priv->title_box, visible);