[Spice-devel] [Qemu-devel] Re: paravirtual mouse/tablet
anthony at codemonkey.ws
Thu Jan 13 12:41:22 PST 2011
On 01/13/2011 11:08 AM, Gerd Hoffmann wrote:
> On 01/13/11 16:55, Anthony Liguori wrote:
>> On 01/13/2011 05:51 AM, Gerd Hoffmann wrote:
>>> On 01/13/11 12:01, Stefan Hajnoczi wrote:
>>>> Can you elaborate how the spice display channel comes into play? On a
>>>> physical machine you just have input devices with no notion of
>>>> display. It's up to the windowing system to process input events and
>>>> handle multihead. Why does a pv tablet tie itself to a display
>>> You have two qxl devices, each linked to a spice display channel. The
>>> spice client will open one window for each channel. The mouse position
>>> is a triple consisting of (x, y, window/channel).
>> Would be slightly cleaner to have multiple devices.
> Yea, right, that would work too. If we have some way to assign a
> display to a pvmouse device this works equally well.
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
>> 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?
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