gtk: don't let insensitive children eat scroll events when bubbling down

When event capturing is enabled, stop propagating scroll events
at insensitive widgets, but don't handle them (don't return TRUE),
so they can bubble up again and reach their handling widgets.

1 files changed, 9 insertions, 1 deletions

diff --git a/gtk/gtkmain.c b/gtk/gtkmain.c
index f490aa2f7e..6cb174ead1 100644
--- a/gtk/gtkmain.c
+++ b/gtk/gtkmain.c
@@ -2435,7 +2435,15 @@ propagate_event_down (GtkWidget *widget,
       widget = (GtkWidget *)l->data;
 
       if (!gtk_widget_is_sensitive (widget))
-        handled_event = TRUE;
+        {
+          /* stop propagating on SCROLL, but don't handle the event, so it
+           * can propagate up again and reach its handling widget
+           */
+          if (event->type == GDK_SCROLL)
+            break;
+          else
+            handled_event = TRUE;
+        }
       else
         handled_event = _gtk_widget_captured_event (widget, event);
     }