From: Gregory Heytings <gregory@heytings.org>
To: "Óscar Fuentes" <ofv@wanadoo.es>
Cc: 50178-done@debbugs.gnu.org
Subject: bug#50178: 28.0.50; Size of echo area does not account for line-spacing
Date: Wed, 25 Aug 2021 14:33:35 +0000 [thread overview]
Message-ID: <ba9bdda48fa571e04237@heytings.org> (raw)
In-Reply-To: <87k0k9er3w.fsf@telefonica.net>
>
> On true pixel-oriented systems there are APIs for querying the display
> engine about several metrics. Then you can place the text at certain
> pixel coordinates. Emacs, however, is a Frankenstein system, that uses
> pixels (on graphic frames) but the text positioning depends on previous
> text, i.e. for vertical positioning it is a line-based, not pixel-based,
> system. Therefore, when you just need to output some lines, you must
> deal with pixels, translate back to lines and, to add insult to injury,
> resort to post-facto information.
>
> As useful as it would be an API that returns how many lines fit on a
> given window. Or, on this case, max-mini-window-height being a true
> indication of the capacity of the mini window on terms of the current
> display settings, which is what the users want 99.9% of the time.
>
Try emacs -Q, C-h h to see why it is impossible to have "an API that
returns how many lines fit on a given window".
next prev parent reply other threads:[~2021-08-25 14:33 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-24 2:08 bug#50178: 28.0.50; Size of echo area does not account for line-spacing Óscar Fuentes
2021-08-24 11:58 ` Eli Zaretskii
2021-08-24 13:34 ` Óscar Fuentes
2021-08-24 16:20 ` Eli Zaretskii
2021-08-24 17:44 ` Óscar Fuentes
2021-08-24 18:13 ` Eli Zaretskii
2021-08-24 18:38 ` Óscar Fuentes
2021-08-24 18:49 ` Eli Zaretskii
2021-08-24 19:36 ` Óscar Fuentes
2021-08-25 2:24 ` Eli Zaretskii
2021-08-25 7:49 ` martin rudalics
2021-08-25 9:01 ` Gregory Heytings
2021-08-25 10:49 ` Óscar Fuentes
2021-08-25 12:15 ` Eli Zaretskii
2021-08-25 14:33 ` Gregory Heytings [this message]
2021-08-25 17:09 ` Óscar Fuentes
2021-08-25 17:57 ` Eli Zaretskii
2021-08-25 20:10 ` Óscar Fuentes
2021-08-26 6:34 ` Eli Zaretskii
2021-08-26 7:54 ` martin rudalics
2021-08-26 8:12 ` Eli Zaretskii
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/emacs/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=ba9bdda48fa571e04237@heytings.org \
--to=gregory@heytings.org \
--cc=50178-done@debbugs.gnu.org \
--cc=ofv@wanadoo.es \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/emacs.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).