From 77f0a63b4fce90e4a35393eb16468f11a922ea3a Mon Sep 17 00:00:00 2001
From: Ken Thomases <ken@codeweavers.com>
Date: Mon, 16 Dec 2013 19:42:22 -0600
Subject: [PATCH] winemac: When ClipCursor() is called redundantly, don't warp
 the cursor or discard mouse move events.

Fixes a problem in some games which repeatedly (re)establish the same cursor
clipping rect, making it exceedingly difficult to move the camera with the
mouse.
---
 dlls/winemac.drv/cocoa_app.m | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dlls/winemac.drv/cocoa_app.m b/dlls/winemac.drv/cocoa_app.m
index ce43e277cad..c31bceba90a 100644
--- a/dlls/winemac.drv/cocoa_app.m
+++ b/dlls/winemac.drv/cocoa_app.m
@@ -1353,6 +1353,10 @@ int macdrv_err_on;
         if (!cursorClippingEventTap && ![self installEventTap])
             return FALSE;
 
+        if (clippingCursor && CGRectEqualToRect(rect, cursorClipRect) &&
+            CGEventTapIsEnabled(cursorClippingEventTap))
+            return TRUE;
+
         err = CGAssociateMouseAndMouseCursorPosition(false);
         if (err != kCGErrorSuccess)
             return FALSE;
-- 
2.11.4.GIT