[Interest] Qt and x11/MPX

[Robert Voinea]

Thiago, Laszlo

Thank you both for your quick replies.

I was trying to use only official releases... but I see now that this is out 
of the question.

I'll give it a try with Ubuntu 11.10 and see where that goes.

Thank you!

On Saturday 11 February 2012 11:16:28 laszlo.p.agocs at nokia.com wrote:
> Upgrading to a newer Ubuntu version (and using the Qt shipped with it) might
> help in Robert's case though because as far as I understand Ubuntu ships Qt
> 4.7.x with the experimental XI2.1 touch patches applied.
> 
> In Qt 5 there are two platforms that have touch support currently: wayland,
> and xcb on Harmattan (the latter is again some unofficial XI2.1 stuff).
> Others can use the evdevtouch generic plug-in, but that opens and reads
> from the input device directly via evdev so it is more suitable for
> embedded platforms (e.g. eglfs, or X-less setups like kms)
> 
> Official XInput multi-touch support is coming in XI2.2 (X.org 1.12).
> Supporting this in xcb would certainly be nice (I'm planning to take a look
> at it at some point) but it is indeed not high priority now.
> 
> On sábado, 11 de fevereiro de 2012 11.35.53, Robert Voinea wrote:
> > 1. What is the current state of multitouch in Qt/X11?
> 
> Different patches, no official implementation because future X11 plans were
> abandoned. The XInput 2.0 support that MeeGo and Mer have is a non-standard
> patch that was once submitted to the X.org guys as a proposal for having MT
> work. After a bit of time, it became clear that the protocol was inadequate
> so they started working on 2.1.
> 
> It took too long. By the time they had integrated XInput 2.1 into the
> protocol, all interest on furthering X11 had gone away. Therefore, Qt has no
> plans of ever supporting XInput 2, any version thereof
> 
> By that, read: none of the current Qt developers and companies backing them.
> If someone else comes along and wants to do that, it's another story.
> > 2. Has anyone tested something similar?... Qt + Multitouch? on Linux?
> 
> It works with either the patches or with other systems than X. I'm told the
> Wayland support is good.
> 
> > 3. Is there a solution to my problem?...
> 
> Patching either Qt, or X, or both.
> 
-- 
Robert Voinea
IT Specialist
+4 0740 467 262

Don't take life too seriously. You'll never get out of it alive.
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