From: Yuan Fu <casouri@gmail.com>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: help-gnu-emacs@gnu.org
Subject: Re: How to get the actual face attribute?
Date: Mon, 22 Jun 2020 15:54:19 -0400 [thread overview]
Message-ID: <CC7EDB2C-A7D1-4398-AC96-AB6931123DE4@gmail.com> (raw)
In-Reply-To: <jwvpn9qanoj.fsf-monnier+emacs@gnu.org>
> On Jun 22, 2020, at 3:49 PM, Stefan Monnier <monnier@iro.umontreal.ca> wrote:
>
>>>> Some one reported that when they change the text size with
>>>> text-scale-adjust, the alignment are messed up.
>>> If the alignment is done before changing the text-scale, then it's no
>>> big surprise, since text-scale won't scale everything by the same factor.
>> I see. I calculate the text size base on the assumption that the text scale
>> is the same for all glyphs. That explains why my measuring are off.
>
> I don't know what that means. The text-scale does apply globally.
> But it doesn't necessarily scale by the same factor horizontally and
> vertically, nor does it necessarily scale by the same factor for
> different fonts. It's "more or less equal" but not exactly. And of
> course, it won't affect those glyphs whose size is not relative to the
> base `default` face (e.g. images or glyphs to which a face is applied
> which sets an absolute rather than relative size).
>
> IOW it needs to be recomputed from scratch when the text-scale is changed.
How should I recompute the text scale? Currently I calculate it from
(expt text-scale-mode-step text-scale-mode-amount)
Which is what text-scale-mode uses. (Face remap is hard to calculate so I thought I can just support text-scale-mode.)
Yuan
next prev parent reply other threads:[~2020-06-22 19:54 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-21 4:01 How to get the actual face attribute? Yuan Fu
2020-06-21 14:52 ` Eli Zaretskii
2020-06-21 14:55 ` Yuan Fu
2020-06-21 15:03 ` Eli Zaretskii
2020-06-21 15:54 ` Stefan Monnier
2020-06-22 17:00 ` Yuan Fu
2020-06-22 17:15 ` Perry Smith
2020-06-22 17:21 ` Yuan Fu
2020-06-22 18:47 ` Eli Zaretskii
2020-06-22 19:07 ` Yuan Fu
2020-06-22 18:56 ` Stefan Monnier
2020-06-22 19:10 ` Yuan Fu
2020-06-22 19:49 ` Stefan Monnier
2020-06-22 19:54 ` Yuan Fu [this message]
2020-06-22 21:05 ` Stefan Monnier
2020-06-22 21:14 ` Emacs hackers all around the world (was: Re: How to get the actual face attribute?) Emanuel Berg via Users list for the GNU Emacs text editor
2020-06-24 4:13 ` How to get the actual face attribute? Yuan Fu
2020-06-22 21:27 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-06-24 4:12 ` Yuan Fu
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