[gtk+/wip/ebassi/gsk-renderer: 111/126] Prevent box gadget content from being drawn twice

[Emmanuele Bassi <ebassi src gnome org>]

commit f3f444aec4be05dd0f596a9d9af45840127e2fae
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Aug 6 19:33:47 2016 -0400

    Prevent box gadget content from being drawn twice
    
    Now that we split out box gadget children into separate
    render nodes, we must not draw them onto the box gadgets
    node anymore.

 gtk/gtkboxgadget.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkboxgadget.c b/gtk/gtkboxgadget.c
index 3cc94da..10bc0df 100644
--- a/gtk/gtkboxgadget.c
+++ b/gtk/gtkboxgadget.c
@@ -518,6 +518,12 @@ gtk_box_gadget_draw (GtkCssGadget *gadget,
   return FALSE;
 }
 
+static gboolean
+gtk_box_gadget_has_content (GtkCssGadget *gadget)
+{
+  return FALSE;
+}
+
 static void
 gtk_box_gadget_finalize (GObject *object)
 {
@@ -539,6 +545,7 @@ gtk_box_gadget_class_init (GtkBoxGadgetClass *klass)
   gadget_class->get_preferred_size = gtk_box_gadget_get_preferred_size;
   gadget_class->allocate = gtk_box_gadget_allocate;
   gadget_class->draw = gtk_box_gadget_draw;
+  gadget_class->has_content = gtk_box_gadget_has_content;
 }
 
 static void