status of touchscreen support

status of touchscreen support

[Ken Olum]

What is the status of touchscreen support?  Up until now, it seemed
there wasn't any, at least by default.  Thus tap became mouse left and
long touch became mouse right, and at least it was somewhat usable.  Now
I upgraded to Ubuntu 24.04 and emacs 29.3 on my tablet, and now it says
"<touchscreen-begin> is undefined...<touchscreen-update> is
undefined...<touchscreen-end> is undefined" and doesn't work at all.

Thanks.

                                        Ken

Re: status of touchscreen support

[Po Lu]

Ken Olum <kdo@cosmos.phy.tufts.edu> writes:

> What is the status of touchscreen support?  Up until now, it seemed
> there wasn't any, at least by default.  Thus tap became mouse left and
> long touch became mouse right, and at least it was somewhat usable.  Now
> I upgraded to Ubuntu 24.04 and emacs 29.3 on my tablet, and now it says
> "<touchscreen-begin> is undefined...<touchscreen-update> is
> undefined...<touchscreen-end> is undefined" and doesn't work at all.
>
> Thanks.
>
>                                         Ken

I suggest upgrading to the development branch of Emacs, where support
for touch screen events is complete on X and Android systems.  It's one
of my regrets that it wasn't possible to finish this in time for Emacs
29.1, but things are as they are.

Re: status of touchscreen support

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: emacs-devel@gnu.org
> Date: Fri, 17 May 2024 21:42:54 +0800
> 
> I suggest upgrading to the development branch of Emacs, where support
> for touch screen events is complete on X and Android systems.

This last fact, that touch screen events are currently supported only
on X and Android, doesn't seem to be reflected in NEWS.

Re: status of touchscreen support

[Eli Zaretskii]

> Date: Fri, 17 May 2024 18:31:08 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: kdo@cosmos.phy.tufts.edu, emacs-devel@gnu.org
> 
> > From: Po Lu <luangruo@yahoo.com>
> > Cc: emacs-devel@gnu.org
> > Date: Fri, 17 May 2024 21:42:54 +0800
> > 
> > I suggest upgrading to the development branch of Emacs, where support
> > for touch screen events is complete on X and Android systems.
> 
> This last fact, that touch screen events are currently supported only
> on X and Android, doesn't seem to be reflected in NEWS.

Ping!

Re: status of touchscreen support

[Po Lu]

Eli Zaretskii <eliz@gnu.org> writes:

> Ping!

Right.  I'm still hopeful that someone will answer our call for
volunteers and implement this feature on PGTK in time for Emacs 30.

Re: status of touchscreen support

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: kdo@cosmos.phy.tufts.edu,  emacs-devel@gnu.org
> Date: Sat, 25 May 2024 16:55:49 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Ping!
> 
> Right.  I'm still hopeful that someone will answer our call for
> volunteers and implement this feature on PGTK in time for Emacs 30.

When that happens, we can amend the relevant NEWS entries.  For now, I
think we should mention the limitations on NEWS, because otherwise
there's a high probability that we forget.

Re: status of touchscreen support

[Eli Zaretskii]

> Date: Sat, 25 May 2024 13:51:28 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: kdo@cosmos.phy.tufts.edu, emacs-devel@gnu.org
> 
> > From: Po Lu <luangruo@yahoo.com>
> > Cc: kdo@cosmos.phy.tufts.edu,  emacs-devel@gnu.org
> > Date: Sat, 25 May 2024 16:55:49 +0800
> > 
> > Eli Zaretskii <eliz@gnu.org> writes:
> > 
> > > Ping!
> > 
> > Right.  I'm still hopeful that someone will answer our call for
> > volunteers and implement this feature on PGTK in time for Emacs 30.
> 
> When that happens, we can amend the relevant NEWS entries.  For now, I
> think we should mention the limitations on NEWS, because otherwise
> there's a high probability that we forget.

is the state of affairs with touchscreen support now matches what will
be in Emacs 30?  If so, I think we should say in NEWS which platforms
support this (or which don't, whatever is easier).

TIA

Re: status of touchscreen support

[Po Lu]

Eli Zaretskii <eliz@gnu.org> writes:

> is the state of affairs with touchscreen support now matches what will
> be in Emacs 30?

Will the release branch be cut within 2 weeks (or before July the 16th)?
If so, then yes, but otherwise MS-Windows will probably join the ranks
of touchscreen-enabled systems.

> If so, I think we should say in NEWS which platforms support this (or
> which don't, whatever is easier).

Provided the above, that is reasonable.

Re: status of touchscreen support

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: kdo@cosmos.phy.tufts.edu,  emacs-devel@gnu.org
> Date: Sat, 01 Jun 2024 22:18:27 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > is the state of affairs with touchscreen support now matches what will
> > be in Emacs 30?
> 
> Will the release branch be cut within 2 weeks (or before July the 16th)?

Yes, I hope so.

> If so, then yes, but otherwise MS-Windows will probably join the ranks
> of touchscreen-enabled systems.

From where I stand, you could add it after the branch point.

Re: status of touchscreen support

[Ken Olum]

Thanks very much.  I installed from master and everything works great!

I guess it's a problem (though no longer for me) that version 29 has
this partly implemented and so gives a loss of functionality compared to
earlier releases.  Before I got your message, I worked around it with
--without-xinput2.  Should anything be done about this?

                                        Ken