From: Manuel Giraud via "Emacs development discussions." <emacs-devel@gnu.org>
To: "emacs-devel" <emacs-devel@gnu.org>
Subject: Images :scale and :width/:height relation
Date: Fri, 01 Sep 2023 12:46:11 +0200 [thread overview]
Message-ID: <87ledqcgss.fsf@ledu-giraud.fr> (raw)
Hi,
For the need of bug#65581, I'd like to have access to the current scale
of an image. But it seems that this one does not always reflect
reality. For instance, you can have a image with an original width of
500 scaled down to a width of 100 (by mean of the :width keyword) and
its :scale keyword will still be 1.
In "(elisp) Image Descriptors", it is said that:
If both ‘:scale’ and ‘:height’/‘:width’ are specified, the
height/width will be adjusted by the specified scaling factor.
But it does not seems to work the other way around. Wouldn't it be a
good thing if 'create-image' return a « normalized » image spec where
the :width, :height and :scale are filled and kept in sync?
If yes, I think we should have answers for the following questions:
- Does :scale have priority over :width or :height? Or the opposite?
- What would be the :scale of an image that does not preserve aspect
ratio?
--
Manuel Giraud
next reply other threads:[~2023-09-01 10:46 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-01 10:46 Manuel Giraud via Emacs development discussions. [this message]
2023-09-01 20:57 ` Images :scale and :width/:height relation Alan Third
2023-09-03 13:37 ` Manuel Giraud via Emacs development discussions.
2023-09-03 16:40 ` Alan Third
-- strict thread matches above, loose matches on Subject: below --
2023-09-01 9:54 Manuel Giraud
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