.\" $OpenBSD: xtsscale.1,v 1.4 2007/08/31 22:02:51 matthieu Exp $
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.\" Copyright (c) 2007 Robert Nagy <robert@openbsd.org>
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.Dd May 17, 2007
.Dt XTSSCALE 1
.Os
.Sh NAME
.Nm xtsscale
.Nd X touch screen calibration tool 
.Sh SYNOPSIS
.Nm xtsscale
.Bk -words
.Op Ar device
.Ek
.Sh DESCRIPTION
.Nm
is used interactively to calculate both the scaling and offset values which
will make the pointer act at the indicated location on the screen.
.Pp
When good deviations are calculated from the selections made at these
points,
.Nm
will exit and provide on standard output a result like the following:
.Pp
.Dl mouse.scale=200,3400,312,3672,0,1024,768
.Pp
This result should be placed into
.Pa /etc/wsconsctl.conf
for further use, or can be immediately applied using:
.Pp
.Dl # wsconsctl mouse.scale=200,3400,312,3672,0,1024,768
.Sh NOTES
To use 
.Nm
a special 
.Pa /etc/X11/xorg.conf
X configuration file is needed, in which the input device driver is
replaced by the
.Xr void 4
driver so that the device to calibrate is not opened by X during the
calibration.
.Pp
.Pa /etc/wsconsctl.conf
cannot currently be used to set the calibration data of a device
that is not the first device. (
.Pa /dev/wsmouse0
)
.Sh SEE ALSO
.Xr ioctl 2 ,
.Xr uts 4 ,
.Xr wscons 4 ,
.Xr wsconsctl 8 ,
.Xr X 7
.Sh HISTORY
The
.Nm 
command appeared in
.Ox 4.2 .