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Date: Fri, 14 Jan 2011 09:49:40 +0100
From: Gerd Hoffmann <kraxel@redhat.com>
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Subject: Re: [Qemu-devel] Re: [Spice-devel] paravirtual mouse/tablet
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To: Anthony Liguori <anthony@codemonkey.ws>
Cc: Stefan Hajnoczi <stefanha@gmail.com>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, spice-devel <spice-devel@lists.freedesktop.org>

   Hi,

> I think that has to be outside of the device. There are so many ways to
> map mice to multi heads. In fact, one mouse could easily map to a single
> device. It's almost something that really should be part of the guest
> configuration.

Ok, reasonable.  Multihead with spice pretty much requires a guest agent 
anyway, so I'm sure we'll can figure a way to handle this.

>>> That maybe implies that we need an offscreen coordinate for the
>>> mouse so that you can hide the mouse when it leaves one window.
>>
>> Hmm? I fail to see why multihead is special here.
>
> If you show two mice in the guest, would X render two cursors?

With two mice you still have just one cursor.  Just plug a usb mouse 
into your laptop, you can move the single pointer with both usb mouse 
and touchpad then.  Didn't try what happens with two tablets, but I 
expect it wouldn't be different ...

cheers,
   Gerd