[PATCH libinput 0/24] Tablet support

[Ping Cheng]

On Thu, May 22, 2014 at 4:55 PM, Carlos Garnacho <carlosg at gnome.org> wrote:
> Hi Ping!
>
> On lun, 2014-04-21 at 18:03 -0700, Ping Cheng wrote:
>> Benjamin is right. Those are absolute values. Most Linux applications
>> do not use those extra values. But, there are in-house applications
>> need those values. I'll have to ask around to give you some use cases
>> if you are interested.
>
> Very late reply, but... I would certainly find some usecases
> interesting.

 When I visited some studios a while ago, I saw artists assign
functions to those wheels and strips. But, I don't remember exactly
what they use. Duh...

> For strips, I see this making sense (although precision would be hard
> when the contact is first made), I guess what matters in those contexts
> is the point where the contact is lifted.
>
> I'm wondering though wrt wheels, values 0 and 71 are physically too
> close, but would make a big difference if absolute values are used
> there.

I guess the point is: developers can convert absolute value to
relative. But, they can not convert relative back to absolute. So, if
we have absolute value, it'd be better to keep it. It offers more
option to application developers.

Ping