Re: [Qemu-devel] [RFC] [PATCH 0/5] Add horizontal wheel support to mice, where possible

[Anthony Liguori <anthony@codemonkey.ws>]

On 05/04/2010 11:56 AM, Brad Jorsch wrote:
> The emulated mice should emulate a horizontal wheel when possible. This
> patch series does that for the USB mouse and tablet and the ExPS/2
> mouse. As far as I can tell the vmmouse protocol doesn't handle a
> horizontal wheel, and I have no idea if emulating a wheel might make
> sense for any of the other mouse types.
>    

At this point, are we just talking about adding additional mouse buttons?

I think instead of adding an additional parameter for horizontal wheel, 
we should look at making the API capable of accepting/generating 
arbitrary button presses.

Really, we should just drop dz and treat vertical wheel as two button 
presses within button_state.  Likewise, horizontal wheel should just be 
two additional bits within button_state.

Regards,

Anthony Liguori

> I've tested this using the SDL interface and an Ububtu 10.04 cd image;
> xev reports the correct events for all three devices, and a gedit window
> with sufficient text to create scrollbars scrolls correctly with both
> mice (didn't test the tablet). More testing would be good.
>
> See also Debian bug #579968.[1]
>
> [1] http://bugs.debian.org/579968
>
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