From b936f094d1d3d0ded94452561848dfac6228318b Mon Sep 17 00:00:00 2001
From: "Jasper St. Pierre" <jstpierre@mecheye.net>
Date: Sun, 4 Nov 2012 10:11:30 -0500
Subject: [PATCH] st-scroll-view: Throw away emulated pointer events

These are sent by the X server and have large deltas. They really
should be filtered out by Clutter (or the X server) somehow, but we
don't have the means to do that yet.

https://bugzilla.gnome.org/show_bug.cgi?id=687573
---
 src/st/st-scroll-view.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/st/st-scroll-view.c b/src/st/st-scroll-view.c
index e4b3372b2..caa627a5a 100644
--- a/src/st/st-scroll-view.c
+++ b/src/st/st-scroll-view.c
@@ -731,6 +731,9 @@ st_scroll_view_scroll_event (ClutterActor       *self,
   if (!priv->mouse_scroll)
     return FALSE;
 
+  /* throw away this garbage event. we want smooth scrolling. */
+  if (clutter_event_is_pointer_emulated ((ClutterEvent *) event))
+    return TRUE;
 
   switch (event->direction)
     {