Re: Touch screen zoom - any method to disable?

On Fri, 16 Feb 2024 18:07:22 +0100
Michael Gmelin <freebsd@grem.de> wrote:

> > On 16. Feb 2024, at 13:35, Milan Obuch <freebsd-x11@dino.sk> wrote:
> > 
> > On Fri, 16 Feb 2024 13:04:14 +0100
> > Michael Gmelin <freebsd@grem.de> wrote:
> >   
> >>>> On 16. Feb 2024, at 12:46, Milan Obuch <freebsd-x11@dino.sk>
> >>>> wrote:  
> >>> 
> >>> Hi,
> >>> 
> >>> I have a terminal with touch screen running luakit with custom
> >>> application. Basically, it works as intended, however, sometimes
> >>> user unknowingly zooms into part of screen.
> >>> 
> >>> While relatively easy, all that's necessary is unzoom it using two
> >>> fingers (the same way as used on smartphones), it scares this
> >>> user a bit. So the best way to handle it would be not allowing
> >>> zoom to occur.
> >>> 
> >>> Is there a method to do this? Some configuration of X? My setup
> >>> uses webcamd to create event file for touch screen and libinput
> >>> driver to handle input event in X.    
> >> 
> >> Can you share the output of
> >> 
> >>  xinput list
> >> 
> >> and for each of the devices shown
> >> 
> >>  xinput list-props device
> >> 
> >> Cheers
> >>   
> > 
> > At the moment, not for the real device, only for my workstation
> > which shares similar configuration. However, the 'issue' of zoom is
> > the same, so I hope any outcome would be relevant.
> > 
> > Here, 'xinput list' shows
> > 
> > ⎡ Virtual core pointer                        id=2    [master
> > pointer  (3)] ⎜   ↳ Virtual core XTEST pointer
> > id=4    [slave  pointer  (2)] ⎜   ↳ System mouse
> >             id=6    [slave  pointer  (2)] ⎜   ↳ Composite USB PS2
> > Converter USB to PS2 Adaptor  v1.09    id=11    [slave  pointer
> > (2)] ⎜   ↳ AcerA Bell T231HlTouchScreen                id=12
> > [slave  pointer  (2)] ⎣ Virtual core keyboard
> > id=3    [master keyboard (2)] ↳ Virtual core XTEST keyboard
> >         id=5    [slave  keyboard (3)] ↳ System keyboard multiplexer
> >                 id=7    [slave  keyboard (3)] ↳ Power Button
> >                         id=8    [slave  keyboard (3)] ↳ AT keyboard
> >                                 id=9    [slave  keyboard (3)] ↳
> > Composite USB PS2 Converter USB to PS2 Adaptor  v1.09    id=10
> > [slave  keyboard (3)]
> > 
> > and 'xinput list-props <device>' for all device listed (in
> > numerical id order) is attached. (Far easier than handling mail
> > wrapping issues.)  
> 
> Ok, this is a wild shot, but does
> 
>   xinput disable 10
> 
> help?
>

No. Actually, it is my main keyboard device, PS/2 connected via KVM
switch via USB to PS/2 converter, and disabling it just disabled
keyboard input (I have spare USB keyboard here so I was prepared for
this, I was able to enable it after test). Zoom via touchscreen two
finger gesture still worked (and unzoom as well).

Regards,
Milan