[baobab] baobab-chart: fix scrolling

[Stefano Facchini <sfacchini src gnome org>]

commit 66ad37228e155fe6707064109eae2dd17cc1e969
Author: Stefano Facchini <stefano facchini gmail com>
Date:   Thu Mar 8 11:42:03 2012 +0100

    baobab-chart: fix scrolling
    
    After recent GTK+ changes, GDK_SCROLL_MASK must be explicitly added.

 src/baobab-chart.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/src/baobab-chart.c b/src/baobab-chart.c
index 5af0861..d6d95d2 100644
--- a/src/baobab-chart.c
+++ b/src/baobab-chart.c
@@ -292,7 +292,7 @@ baobab_chart_realize (GtkWidget *widget)
   attributes.height = allocation.height;
   attributes.wclass = GDK_INPUT_OUTPUT;
   attributes.visual = gtk_widget_get_visual (widget);
-  attributes.event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;
+  attributes.event_mask = gtk_widget_get_events (widget);
 
   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
 
@@ -308,7 +308,8 @@ baobab_chart_realize (GtkWidget *widget)
   gtk_widget_add_events (widget,
                          GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK |
                          GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK |
-                         GDK_POINTER_MOTION_HINT_MASK | GDK_LEAVE_NOTIFY_MASK);
+                         GDK_POINTER_MOTION_HINT_MASK | GDK_LEAVE_NOTIFY_MASK |
+                         GDK_SCROLL_MASK);
 }
 
 static void