Re: [Qemu-devel] Gentlemen we have absolute movement! was:Absolute USB-HID device musings (was Re: VNC Terminal Server)

[Brad Campbell <brad@wasp.net.au>]

Anthony Liguori wrote:
> Hi Brad,
> 
> I have your patch applied and the previous one and it doesn't seem to 
> work under win2k.  Can you post a patch of what you have?
> 
> I've got what I have attached.  I did a little bit of SDL plumbing based 
> on my touchscreen patch.
> 

Ok.. now I've embarrassed myself by publicly releasing my spaghetti, I've had a look at what you are 
up to..
The VNC patch extends the existing mouse handler by passing it abs coordinates as well, (this is the 
basis of what I used) so there are no additional routines.. I figure if you pass both relative 
(faked if need be) and abs to the routine then the mouse can use whatever it likes.

It looks like you are adding a completely separate handler there ?

I had to stop the ps2 mouse handler registering itself to let the usb one have a go. But now its 
working. I've left both cursors live so you can see how well it mates up. There is a minor elastic 
discrepancy toward the bottom right of the screen, but I'm *sure* its just due to my off the top of 
my head hacky position calculations and it can be refined further..

I figure a command line switch for usbmouse/usbabs/ps2 might be in order so you can change depending 
on your os. Hopefully the evdev patch in X gets up and running and we can just default to abs mode.

I'll get hold of a wheel mouse tomorrow (my trackpad does not have a Z) and see if I can get the Z 
axis going..

Tested under win2k-SP4. How cool is it to be grabless and change resolutions on the fly..
I'll clean it up tomorrow and graft it into the vnc patch also.. virtual servers here we come!

Brad
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