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

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Message #110 received at 38187 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 38187 <at> debbugs.gnu.org, stefan <at> marxist.se, juri <at> linkov.net
Subject: Re: bug#38187: 27.0.50; No mouse-wheel scaling on images
Date: Fri, 22 Nov 2019 09:31:40 +0200

> From: Lars Ingebrigtsen <larsi <at> gnus.org>
> Cc: Eli Zaretskii <eliz <at> gnu.org>,  stefan <at> marxist.se,  38187 <at> debbugs.gnu.org
> Date: Thu, 21 Nov 2019 22:26:30 +0100
> 
> (dolist (file (directory-files dir-with-lots-of-images))
>   (erase-buffer)
>   (insert-image (create-image file)))
> 
> You get the same effect by altering the scaling factor, I think?  Each
> scaled image is cached?  So by rolling the wheel ten clicks you get ten
> cached copies of the image.

Again, does binding redisplay-dont-pause to nil help in any way here?

> A better eviction algorithm would be nice.

Such an algorithm would need to detect these "useless" cached images
to be effective.

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