[gtk+] menu: Clip children to view window

[Lapo Calamandrei <lapo src gnome org>]

commit cd78fa15eda0638180ba5ffd4d6eccb2cbfefb86
Author: Benjamin Otte <otte redhat com>
Date:   Thu Mar 24 19:50:45 2016 +0100

    menu: Clip children to view window
    
    Don't overdraw the arrow allocations.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=764118

 gtk/gtkmenu.c |   14 +++++++++++++-
 1 files changed, 13 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkmenu.c b/gtk/gtkmenu.c
index cdf2aec..a811a23 100644
--- a/gtk/gtkmenu.c
+++ b/gtk/gtkmenu.c
@@ -3011,7 +3011,19 @@ gtk_menu_draw (GtkWidget *widget,
         gtk_css_gadget_draw (priv->bottom_arrow_gadget, cr);
     }
 
-  GTK_WIDGET_CLASS (gtk_menu_parent_class)->draw (widget, cr);
+  if (gtk_cairo_should_draw_window (cr, priv->bin_window))
+    {
+      int x, y;
+
+      gdk_window_get_position (priv->view_window, &x, &y);
+      cairo_rectangle (cr,
+                       x, y,
+                       gdk_window_get_width (priv->view_window),
+                       gdk_window_get_height (priv->view_window));
+      cairo_clip (cr);
+
+      GTK_WIDGET_CLASS (gtk_menu_parent_class)->draw (widget, cr);
+    }
 
   return FALSE;
 }