GNU bug report logs - #38187
27.0.50; No mouse-wheel scaling on images

Previous Next

Full log

Message #125 received at 38187 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Alan Third <alan <at> idiocy.org>
Cc: larsi <at> gnus.org, stefan <at> marxist.se, 38187 <at> debbugs.gnu.org, juri <at> linkov.net
Subject: Re: bug#38187: 27.0.50; No mouse-wheel scaling on images
Date: Fri, 22 Nov 2019 12:04:49 +0200

> Date: Fri, 22 Nov 2019 09:50:08 +0000
> From: Alan Third <alan <at> idiocy.org>
> Cc: 38187 <at> debbugs.gnu.org, stefan <at> marxist.se, Juri Linkov <juri <at> linkov.net>
> 
> It would be nice if Emacs was able to reuse the actual image data
> where the only difference is scaling or rotation.

I think we found that too complicated at the time.

> A simple ‘solution’ to the mousewheel scaling issue would be to
> explicitly flush the old image from the cache on each change. I think
> that’s what image mode does when you zoom.

image-mode can do that when it knows the scaled image will replace the
previous one, yes.  (We will need to add an API for that, I think.)
But that's not cache eviction, that's application being smarter about
the "garbage" it produces.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.