multi-touch-dev team mailing list archive

[Duncan McGreggor <duncan.mcgreggor@xxxxxxxxxxxxx>]

-------- Original Message --------
Subject: Re: [Private-sparsha-dev] tablets and auto-rotation
Date: Thu, 1 Jul 2010 16:17:43 +0200
From: Mohamed Ikbel Boulabiar <boulabiar@xxxxxxxxx>
To: Alberto Milone <alberto.milone@xxxxxxxxxxxxx>
CC: Rafi Rubin <rafi@xxxxxxxxxxxxxx>, Rick Spencer
<rick.spencer@xxxxxxxxxxxxx>, Bryce Harrington <bryce@xxxxxxxxxxxxx>,
Kees Cook <kees.cook@xxxxxxxxxxxxx>, "Duncan M. McGreggor"
<duncan.mcgreggor@xxxxxxxxxxxxx>


On Tue, Jun 29, 2010 at 12:38 PM, Alberto Milone <
alberto.milone@xxxxxxxxxxxxx> wrote:

> On 29 June 2010 07:44, Rafi Rubin <rafi@xxxxxxxxxxxxxx> wrote:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
> >
> > On 06/28/10 14:00, Kees Cook wrote:
> >> Hi Bryce,
> >>
> >> On Mon, Jun 28, 2010 at 09:23:46AM -0700, Bryce Harrington wrote:
> >>> On Mon, Jun 28, 2010 at 11:45:18AM -0400, Chase Douglas wrote:
> >>>> On Mon, 2010-06-28 at 15:38 +0200, Alberto Milone wrote:
> >>>>> I couldn't attend the UDS but I know that Federico Mena Quintero (at
> >>>>> Novell) was working on this in a separate branch of the
> >>>>> gnome-settings-daemon but he hasn't committed anything upstream yet
> (I
> >>>>> guess he's focusing on different projects):
> >>>>>
>
http://git.gnome.org/browse/gnome-settings-daemon/log/?h=randr-rotate-wacom-tablet
> >>>>>
> >>>>> As Rafi said, this solution also involves setting a gconf key to
tell
> >>>>> the daemon whether we want it to rotate input devices or not when
> >>>>> screens are rotated.
> >>>>>
> >>>>> Currently Federico's code makes use of the xsetwacom tool instead of
> >>>>> using Xinput (which is what we need). I'm very familiar with the
> >>>>> gnome-settings-daemon code and, if there's enough interest at
> >>>>> Canonical, I'm available to work on it but I don't own any Ntrig
> >>>>> touchscreen and I can't use my Stantum tablet because it doesn't
work
> >>>>> with xinput Calibration.
> >>>>
> >>>> I'll second this approach. I believe this is the correct place to fix
> >>>> the issue. I'll let Duncan handle how to pour resources into
this, but
> >>>> this looks promising.
> >>>
> >>> Kees Cook was also working on patch to g-s-d to solve this problem on
> >>> his laptop at UDS.  IIRC, he'd also implemented it using
xsetwacom, but
> >>> we'd also talked about the changes to xinput; I don't know if he
> updated
> >>> his patch for that, but I'm CCing him.
> >>>
> >>> Kees - mind pointing us to your tablet rotation patch?  Would at least
> >>> be interesting to have it to compare with Federico's code.
> >>
> >> Sorry I didn't send this earlier, I kept getting distracted by other
> >> things.  Yes, I wrote it to use XInput.  Also, it seems that g-s-d is
> not
> >> actually the right place to put this, as it is just one of many tools
> that
> >> could be issuing a rotation request.  The patch is actually needed in
> >> gnome-desktop.
> >>
> >> I've attached it here and to https://launchpad.net/bugs/599478
> >>
> >> -Kees
> >
> > Ok, good to see.  Is there a built version available in a ppa or other
> repo?
> >
> > Also looks like it should be easy to add evdev stuff as well.
> >
> > Now for the tough part, for wacom devices in particular how should we
> decide the
> > defaults for which to auto rotate and which not too?  I'm sort of
> wondering if
> > it might just be prudent to brute force it with a list.
> >
> > Simply differentiating pen and touch is insufficient.  Most of the wacom
> touch
> > screens seem to have pen, and we would want to rotate those pens.  We
> also see
> > devices like the bamboo tablets which identify as touch, but aren't
> attached to
> > the screen and shouldn't auto rotate.
> >
> > And then there's messes like ntrig devices, where we're moving towards
> using
> > evdev for touch and the wacom x driver for pen :)
> >
> > Rafi
>
> I've just forwarded you an email that Kees sent to Federico so that we
> can continue the discussion there. You might want add the details of
> your last email there, so that we can all access them (Federico works
> for Novell).
>
> Regards,
>
> --
> Alberto Milone
> Sustaining Engineer (system)
> Foundations Team
> Canonical OEM Services

For the rotation input issue, it seems other guys have solved this problem
http://www.dailymotion.com/video/xdhnv5_pilote-hidtouch-demo-rotation-ecran_tech

They automatically detect the rotation

<http://www.dailymotion.com/video/xdhnv5_pilote-hidtouch-demo-rotation-ecran_tech>
ik.