From: Yuan Fu <casouri@gmail.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: help-gnu-emacs@gnu.org
Subject: Re: How to get the actual face attribute?
Date: Sun, 21 Jun 2020 10:55:38 -0400 [thread overview]
Message-ID: <FE04FE08-DE4E-4712-83A3-EE36AFFE9F68@gmail.com> (raw)
In-Reply-To: <83ftaov5c1.fsf@gnu.org>
> On Jun 21, 2020, at 10:52 AM, Eli Zaretskii <eliz@gnu.org> wrote:
>
>> From: Yuan Fu <casouri@gmail.com>
>> Date: Sun, 21 Jun 2020 00:01:37 -0400
>>
>> When writing my package I need to get height of the face at point. But `face-attribute` doesn’t take face remapping into account, which gives wrong answers. Is there a reliable way to get the actual face attribute that’s used for display? Thanks.
>
> From Lisp or from C?
From Lisp.
>
> In general, you cannot know that except by displaying that text or
> emulating its display, because the face is fully realized only while
> displaying text that is affected by the face.
>
I see, then I will use some ad-hoc check to produce a mostly-right answer. Thanks.
Yuan
next prev parent reply other threads:[~2020-06-21 14:55 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 [this message]
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
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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