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wintab32: Use 64-bit math in ScaleForContext.
With some tablet configurations, the InExt value passed to ScaleForContext can be very large, leading to an integer overflow. Signed-off-by: John Chadwick <john@jchw.io> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
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@ -178,9 +178,9 @@ int TABLET_PostTabletMessage(LPOPENCONTEXT newcontext, UINT msg, WPARAM wParam,
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static inline DWORD ScaleForContext(DWORD In, LONG InOrg, LONG InExt, LONG OutOrg, LONG OutExt)
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{
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if (((InExt > 0 )&&(OutExt > 0)) || ((InExt<0) && (OutExt < 0)))
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return ((In - InOrg) * abs(OutExt) / abs(InExt)) + OutOrg;
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return MulDiv(In - InOrg, abs(OutExt), abs(InExt)) + OutOrg;
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else
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return ((abs(InExt) - (In - InOrg))*abs(OutExt) / abs(InExt)) + OutOrg;
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return MulDiv(abs(InExt) - (In - InOrg), abs(OutExt), abs(InExt)) + OutOrg;
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}
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LPOPENCONTEXT AddPacketToContextQueue(LPWTPACKET packet, HWND hwnd)
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