[gtk+] viewport: select for touch events

[Matthias Clasen <matthiasc src gnome org>]

commit 42c75d28b827ecc403af09127ea3aca285a5a657
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Feb 29 20:08:03 2012 -0500

    viewport: select for touch events
    
    This makes kinetic scrolling work with viewports where the
    content does not otherwise select for button or touch events,
    such as testscrolledwindow's label.

 gtk/gtkviewport.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkviewport.c b/gtk/gtkviewport.c
index 95ad988..e20ccf7 100644
--- a/gtk/gtkviewport.c
+++ b/gtk/gtkviewport.c
@@ -682,7 +682,7 @@ gtk_viewport_realize (GtkWidget *widget)
   event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;
   /* We select on button_press_mask so that button 4-5 scrolls are trapped.
    */
-  attributes.event_mask = event_mask | GDK_BUTTON_PRESS_MASK;
+  attributes.event_mask = event_mask | GDK_BUTTON_PRESS_MASK | GDK_TOUCH_MASK;
 
   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;