Re: [Qemu-devel] rfb patch and mouse movement

["Jim C. Brown" <jbrown106@phreaker.net>]

On Mon, Jan 17, 2005 at 08:23:28AM +0400, Brad Campbell wrote:
> Jim C. Brown wrote:
> 
> >>It worked by taking the data from the touchscreen, running it through the 
> >>relevant calibration routines and sending windows absolute mouse movement 
> >>messages. It worked rather well.
> >
> >
> >What "relevant calibration routines" are we looking at here?
> 
> Pretty simple linear scaling and axis inversion for touchscreens. Nothing 
> complex. Just calculate the max/min points based on some calibration, scale 
> them up to 16 bit values and feed them to windows using a mouse movement 
> message.

> 
> >>Perhaps we could use the touchscreen for movement only 
> >>and send clicks over the ps2 interface.
> >
> >
> >That would require an ugly custom guest driver.
> 
> Not really. Touchscreen drivers and mouse drives co-exist. Just send the 
> movement down the touch screen line and the clicks down the PS2 line. 
> Simple.
> 

Hmm .. if hardware which uses this method already exists, then it's a different
story.

Still, unless the calibration problem is solved, not worth the trouble.

> 
> Regards,
> Brad
> 
> 
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