John Klehm : wintab32: Handle negative output context range for y-axe.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: b77f0a16726a962ede71b12128611d4826581448
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=b77f0a16726a962ede71b12128611d4826581448

Author: John Klehm <xixsimplicityxix at gmail.com>
Date:   Mon Sep 29 17:20:15 2008 -0500

wintab32: Handle negative output context range for y-axe.

---

 dlls/wintab32/context.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/dlls/wintab32/context.c b/dlls/wintab32/context.c
index cf62154..bf46170 100644
--- a/dlls/wintab32/context.c
+++ b/dlls/wintab32/context.c
@@ -215,6 +215,8 @@ LPOPENCONTEXT AddPacketToContextQueue(LPWTPACKET packet, HWND hwnd)
             /* flip the Y axis */
             if (ptr->context.lcOutExtY > 0)
                 packet->pkY = ptr->context.lcOutExtY - packet->pkY;
+            else if (ptr->context.lcOutExtY < 0)
+                packet->pkY = abs(ptr->context.lcOutExtY + packet->pkY);
 
             DUMPPACKET(*packet);