GNU bug report logs - #54564
29.0.50; [PATCH] Use gsettings font rendering entries for pgtk builds

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Message #13 received at 54564 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Po Lu <luangruo <at> yahoo.com>
Cc: 54564 <at> debbugs.gnu.org, pieter.van.prooijen <at> teloden.nl
Subject: Re: bug#54564: 29.0.50;
 [PATCH] Use gsettings font rendering entries for pgtk builds
Date: Sat, 26 Mar 2022 09:01:00 +0300

> Cc: 54564 <at> debbugs.gnu.org
> Date: Sat, 26 Mar 2022 09:16:03 +0800
> From:  Po Lu via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org>
> 
> > Note that this patch won't dynamically re-render when emacs is already
> > running (like it does when changing the system font).  I made an
> > attempt to hook into the gsettings change callback, but could not
> > force a re-creation of the font with the changed parameters,for
> > instance using a 'font-render' config changed event. Any pointers on
> > how to achieve this?
> 
> I'm not sure, but perhaps someone else around here knows.

Maybe I could help if I understood the difficulty well enough.  What
exactly is the problem here?  In particular, what is meant by "force a
re-creation of the font with the changed parameters"?  How can Emacs
"re-create" a font?

> The basic approach is good, thanks for working on this.

AFAIU, this uses gsettings to determine some Emacs font-related
functionality.  One aspect that bothers me is whether users will have
the means to tell Emacs to ignore those gsettings and use the usual
Emacs defaults instead?  I don't think it's a good idea to apply those
gsettings unconditionally without letting users override that.

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