touchscreens in multiscreen setups

Daniel Stone daniel at
Fri Dec 18 07:39:05 PST 2009


On Thu, Dec 17, 2009 at 10:35:16PM -0800, Keith Packard wrote:
> I'd say tablets and touch screens should report raw device coordinates
> and let the X server transform them as appropriate. It'd be really cool
> if we could make all absolute devices report position in floating point
> using a [0..1] range on each axis. I think. The X server would then
> transform those as appropriate. I think all that would take is a new
> PostMotionEvent function that took doubles instead of ints; fixed
> drivers would use that, broken drivers would continue to report
> coordinates as they do today.

Modulo floating point, this is how it's happened since approximately
forever ...

-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 197 bytes
Desc: not available
URL: <>

More information about the xorg mailing list