From 36298c1454b361b16845394e68e2258e1593be9f Mon Sep 17 00:00:00 2001
From: rubidium <rubidium@openttd.org>
Date: Thu, 4 Feb 2010 14:21:20 +0000
Subject: (svn r19002) -Fix [FS#1140]: [OSX] Problems with scrolling touchpad
 (Peter Thorson). I can/have not test(ed) it, it cannot break non OSX builds.

---
 src/window.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/window.cpp')

diff --git a/src/window.cpp b/src/window.cpp
index 110836e4a..d0bb55800 100644
--- a/src/window.cpp
+++ b/src/window.cpp
@@ -2109,6 +2109,10 @@ static void MouseLoop(MouseClick click, int mousewheel)
 				if (!(w->flags4 & WF_DISABLE_VP_SCROLL)) {
 					_scrolling_viewport = true;
 					_cursor.fix_at = true;
+
+					/* clear 2D scrolling caches before we start a 2D scroll */
+					_cursor.h_wheel = 0;
+					_cursor.v_wheel = 0;
 				}
 				break;
 
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