cssnode: Add visibility concept

This allows hiding nodes of invisible widgets.
And that in turn makes sure :nth-child() works as expected.

1 files changed, 4 insertions, 0 deletions

diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index e13145ccfe..cfb4223bfa 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -4869,6 +4869,8 @@ gtk_widget_show (GtkWidget *widget)
             gtk_widget_queue_compute_expand (widget->priv->parent);
         }
 
+      gtk_css_node_set_visible (widget->priv->cssnode, TRUE);
+
       g_signal_emit (widget, widget_signals[SHOW], 0);
       g_object_notify (G_OBJECT (widget), "visible");
 
@@ -4967,6 +4969,8 @@ gtk_widget_hide (GtkWidget *widget)
           gtk_widget_queue_compute_expand (widget);
         }
 
+      gtk_css_node_set_visible (widget->priv->cssnode, FALSE);
+
       g_signal_emit (widget, widget_signals[HIDE], 0);
       if (!gtk_widget_is_toplevel (widget))
 	gtk_widget_queue_resize (widget);