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Re: [Qemu-devel] synaptic touchpad 4.x
From: |
Jim C. Brown |
Subject: |
Re: [Qemu-devel] synaptic touchpad 4.x |
Date: |
Fri, 7 May 2004 14:33:51 -0400 |
User-agent: |
Mutt/1.4i |
On Fri, May 07, 2004 at 05:09:14PM +0200, Johannes Schindelin wrote:
> Hi,
>
> On Fri, 7 May 2004, Jim C. Brown wrote:
> > I'm writing the code in it. Is there any specific model to base the
> > emulation on?
>
> Cool! I looked into qemu/pckbd.c and linux/drivers/input/mouse/synaptics.c
> and decided that I would have to read up a lot in order to start it...
I looked for the protocol on google and found a link to the protocol
specs on the XFree86 Synaptic driver's web page. I just code, read, code,
read, code, ...
>
> > Of course, it appears that the standard touchpad doesn't
> > support the Z axis (i.e. no 3rd mouse button/scroll wheel).
>
> My touchpad doesn't have it either. But there are those gestures: If you
> put your index finger down and slide with your ring finger, it emulates
> the wheel. I don't know how this is done internally (if synaptics already
> knows how to translate that, or if the driver does it), but this could be
> the way to go.
I haven't read through the 91-page pdf file yet, but it appears that the driver
does it. Guestures are reported by the touchpad directly to the driver. I didn't
look into this too clearly though and could be mistaken. I wasn't planning on
supporting guestures. At least not so early.
>
> Do you have a patch for me to try out?
>
Not yet. I haven't even tried to compile it. If you want the changes I have so
far, I can send you the file, but I'm not done writing the code yet.
> Ciao,
> Dscho
>
>
>
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