From 87e3a71580b5efccb2ff79c6cf9ffe4ef93401fb Mon Sep 17 00:00:00 2001
From: stephena <stephena@8b62c5a3-ac7e-4cc8-8f21-d9a121418aba>
Date: Sat, 28 May 2011 01:14:14 +0000
Subject: [PATCH] Fix bug with unwanted mouse movement after changing video
 modes.

git-svn-id: svn://svn.code.sf.net/p/stella/code/trunk@2239 8b62c5a3-ac7e-4cc8-8f21-d9a121418aba
---
 src/emucore/EventHandler.cxx | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/emucore/EventHandler.cxx b/src/emucore/EventHandler.cxx
index e2e46264f..8d0dd152e 100644
--- a/src/emucore/EventHandler.cxx
+++ b/src/emucore/EventHandler.cxx
@@ -646,8 +646,12 @@ void EventHandler::poll(uInt64 time)
           if(myMouseEnabled)
           {
             int x = event.motion.xrel, y = event.motion.yrel;
-            myEvent->set(Event::MouseAxisXValue, x);
-            myEvent->set(Event::MouseAxisYValue, y);
+            // Filter out extremely large movement, which is usually caused
+            // by a screen being re-created
+            if(abs(x) < 100)
+              myEvent->set(Event::MouseAxisXValue, x);
+            if(abs(y) < 100)
+              myEvent->set(Event::MouseAxisYValue, y);
           }
         }
         else if(myOverlay)