multi-touch-dev team mailing list archive

["Duncan M. McGreggor" <duncan.mcgreggor@xxxxxxxxxxxxx>]

Hello Kedar,

On Jan 4, 2011, at 6:47 AM, Kedar Dharmadhikari wrote:

> Hi Duncan,
>
> We are trying to develop a multi touch application in our  
> organisation. I
> want to know how can we develop application for multi touch. I am  
> curious to
> know following things
>
> 1)	I have developed a application using QT framework. ver(4.6.2) is it
> possible for me to receive any multi touch events at application  
> lever for
> 10.10 Ubuntu.

Qt hasn't release support for Ubuntu's uTouch yet. They currently have  
branches at various levels of development that include support touch  
in Linux (using uTouch). Denis can better answer what the status is  
there. Or you can check out the code here:
  http://qt.gitorious.org/+qt-developers/gestures

I blogged about this some here:
  http://oubiwann.blogspot.com/2010/10/multitouch-and-qt.html

> I am asking you this question because we have developed a
> device driver which sends the event to application, but the  
> developer tells
> me that it is not able to clear the Xwindow layer in Ubuntu 10.10.
>
> 2)	Are you aware of any applications handling multi touch in Ubuntu
> 10.10 available in the market. Because I want to see the demo for such
> applications.

Not using Qt. We've got evince (Document Viewer) supporting MT in  
Ubuntu, and work on eog is progressing. But both of those are GTK.

Hope this helps,

d

> Regards,
> Kedar Dharmadhikari
>
> -----Original Message-----
> From: Chase Douglas [mailto:chase.douglas@xxxxxxxxxxxxx]
> Sent: Tuesday, January 04, 2011 2:18 AM
> To: Shreepad Hardas
> Cc: chase.douglas@xxxxxxxxxx; 'Kedar Dharmadhikari'; Duncan McGreggor
> Subject: Re: Utouch test application help
>
> On 12/29/2010 08:27 AM, Shreepad Hardas wrote:
> > Hello Chase
> >
> >                We have a new input device that which we have
> > successfully tested with the following test apps
> >
> > 1.       mtdev-test /dev/input/event4
> >
> > 2.       grail-touch /dev/input/event4
> >
> > 3.       grail-gesture 0xFFFFFFFF /dev/input/event4
> >
> >
> >
> > event4 is the input device generating Type A multi-touch events.
> >
> > Could you guide us how to proceed further to write a test application
> > under X window system such that the application starts receiving the
> > multitouch events.
>
> Hi Shreepad,
>
> As promised, here's a more detailed answer to your question:
>
> Ubuntu's multitouch and gesture solutions can be divided into two
> solutions. The first is implemented in Ubuntu 10.10 and provides for
> gestures using the utouch-geis library. The specification is  
> documented
> (though poorly formatted) at:
>
> https://wiki.ubuntu.com/Multitouch/APIs/GEIS/1.0Spec
>
> If you install the libutouch-geis-doc package in Ubuntu 10.10 you will
> find raw doxygen documentation by directing your browser to:
>
> file:///usr/share/doc/utouch-geis/html/index.html
>
> This first version will be forward ported as necessary for  
> applications
> to work on future versions of Ubuntu.
>
> Our second version will be implemented in Ubuntu 11.04. It will be  
> built
> on top of XInput 2.1 multitouch work. It will provide more features  
> and
> control of multitouch and gesture input than the first version. This
> should be ready for some testing in a month or two.
>
> I know these responses are very high level. Please feel free to ask  
> more
> in depth about anything here or on our mailing list
> multi-touch-dev@xxxxxxxxxxxxxxxxxxx.
>
> Thanks!
>
> -- Chase
>
> (I've CC'd Duncan McGreggor, the project manager for Ubuntu multitouch
> and gesture work.)
>
>
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