widget: Correctly handle which widgets to include in the clip

Previously, we would not include any child widget on the first
allocation, which happens right after realize(), but before map(). No
widget is drawable at that point.

diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index 73001fd71b624a8976e98e82808c397fd801b2eb..575db60efd3153f249448d4170deb1070981c9a9 100644 (file)
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -15578,7 +15578,8 @@ union_with_clip (GtkWidget *widget,
 {
   GtkAllocation widget_clip;
 
-  if (!gtk_widget_is_drawable (widget))
+  if (!gtk_widget_is_visible (widget) ||
+      !gtk_widget_get_child_visible (widget))
     return;
 
   gtk_widget_get_clip (widget, &widget_clip);