Weston multitouch support?

[Peter Hutterer]

On Sun, Jun 01, 2014 at 11:38:02PM +0100, José Expósito wrote:
> Hi Daniel,
> 
> I'm asking because I'm the author of this tool:
> https://code.google.com/p/touchegg/
> 
> That is exactly what you mention but for X11. So I'd like to port it to
> Wayland if it is possible of course.
> 
> > The intention was to reserve trackpad
> > gestures for a gesture interpreter
> > which lives in the compositor and is
> > properly integrated with, e.g., scrolling
> > and tap-to-click.
> 
> Does this mean that it is possible to get multi touch gestures in the
> compositor at the moment?
> Will or is it possible to use both approach? I mean, get system gestures in
> the compositor and app specified gestures in the clients, like in OS X.

the input stack in weston atm is that you get touch events from a
direct-touch MT device raw and unprocessed (save for mapping), but for
touchpads some input events are interpreted by the stack (libinput or
evdev-touchpad.c) and then passed on as pointer events, you don't see the MT
bits of those.

Cheers,
   Peter


> Thank you very much!
>  El 01/06/2014 23:24, "Daniel Stone" <daniel at fooishbar.org> escribió:
> 
> > Hi,
> >
> >
> > On 1 June 2014 02:03, José Expósito <jose.exposito89 at gmail.com> wrote:
> >
> >> And I say more or less because it is necessary to put 3 fingers on the
> >> trackpad to start moving the rectangles...
> >> Anyway, the program is not working on Weston. My question is, is that
> >> because Weston doesn't implement multitouch support or because Wayland
> >> doesn't support it at the moment? Could it be possible to implement
> >> multitouch support in a custom compositor?
> >>
> >
> > Wayland doesn't (currently) support touchpad gestures for arbitrary
> > clients; trying to do it for X11 uncovered a whole host of really subtle
> > and annoying issues. The intention was to reserve trackpad gestures for a
> > gesture interpreter which lives in the compositor and is properly
> > integrated with, e.g., scrolling and tap-to-click.
> >
> > Can I ask if you had a specific usecase in mind?
> >
> > Cheers,
> > Daniel
> >

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