[PATCH weston 00/25] A new touchscreen calibrator

Pekka Paalanen ppaalanen at gmail.com
Mon Mar 26 09:36:32 UTC 2018

On Fri, 23 Mar 2018 09:33:10 -0700
Jason Gerecke <killertofu at gmail.com> wrote:

> Nice! Do you think its reasonable to extend the allowed use of this
> protocol to other kinds of direct-input devices? I don't see anything
> which would prevent this protocol from working equally well to
> calibrate the pen input for a tablet PC or Cintiq for example. The
> compositor would need to obviously have pen support and notify the
> client of the device in a "touch_device" event, but otherwise it looks
> like the client doesn't really have to care about the underlying
> device -- the protocol provides its own definition of down/up/motion
> events. Just the documentation would need to be tweaked.

Hi Jason,

I suppose, but I am not at all familiar with such devices, so I cannot
make the call. I have never even used one.

If the design is a good match for other devices, I would be happy to
accept spec changes and renaming interfaces to be more generic, but
only if someone is working on an implementation somewhere as well.

Currently the protocol is being proposed to be Weston private. We might
land it as is, and then talk about how it should be generalized and
which package should install it for public use. We can have
libweston-dev install the XML file, or it could be proposed to be
included in wayland-protocols if it satisfies the general inclusion
requirements there. Or somewhere else.


> On Fri, Mar 23, 2018 at 5:00 AM, Pekka Paalanen <ppaalanen at gmail.com> wrote:
> > From: Pekka Paalanen <pekka.paalanen at collabora.co.uk>
> >
> > Hi all,
> >
> > the existing touchscreen calibrator in Weston has several problems. This
> > proposal intends to solve them all by introducing a new protocol
> > extension for touchscreen calibration and a new calibrator tool.
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