1 files changed, 4 insertions, 1 deletions
diff --git a/GLX.hs b/GLX.hs
index ba2bfeb..f98d367 100644
--- a/GLX.hs
+++ b/GLX.hs
@@ -157,9 +157,12 @@ handleEvent glx xevent = do
                            wa <- getWindowAttributes (glxDisplay glx) (glxWindow glx)
                            let x = fromIntegral . ev_x $ event
                                y = fromIntegral . ev_y $ event
+                               w = fromIntegral . wa_width $ wa
                                h = fromIntegral . wa_height $ wa
                                s = fromRational . glxScale $ glx
-                           return (glx, Just $ SomeEvent $ MouseMotionEvent (x/s) ((h-y)/s))
+                               lw = fromIntegral . glxLevelWidth $ glx
+                               lh = fromIntegral . glxLevelHeight $ glx
+                           return (glx, Just $ SomeEvent $ MouseMotionEvent ((w/2+x)/s - lw/2) ((h/2-y)/s + lh/2))
       | otherwise -> return (glx, Nothing)