* [26.3] large image scrolling gets stuck
@ 2019-10-10 0:38 dick.r.chiang
2019-10-10 5:54 ` Eric S Fraga
0 siblings, 1 reply; 9+ messages in thread
From: dick.r.chiang @ 2019-10-10 0:38 UTC (permalink / raw)
To: ding
SPC is `gnus-summary-next-page` from the summary buffer. If the article
contains a large image, SPC stops scrolling upon hitting the image.
The image is miraculously scaled down in both emacs-26.2 and emacs-27.0.50,
deftly avoiding this bug.
Hoping Mr. Ingebrigtsen sees this; I imagine he would immediately know why
this is.
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [26.3] large image scrolling gets stuck
2019-10-10 0:38 [26.3] large image scrolling gets stuck dick.r.chiang
@ 2019-10-10 5:54 ` Eric S Fraga
2019-10-10 17:06 ` Eric Abrahamsen
0 siblings, 1 reply; 9+ messages in thread
From: Eric S Fraga @ 2019-10-10 5:54 UTC (permalink / raw)
To: ding
On Wednesday, 9 Oct 2019 at 20:38, dick.r.chiang@gmail.com wrote:
> SPC is `gnus-summary-next-page` from the summary buffer. If the article
> contains a large image, SPC stops scrolling upon hitting the image.
Just to add that I see this as well. If the image is larger than the
window, possibly in either dimension, scrolling doesn't happen.
--
Eric S Fraga via Emacs 27.0.50 & org 9.2.4 on Debian bullseye/sid
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [26.3] large image scrolling gets stuck
2019-10-10 5:54 ` Eric S Fraga
@ 2019-10-10 17:06 ` Eric Abrahamsen
2019-10-10 17:18 ` dick
0 siblings, 1 reply; 9+ messages in thread
From: Eric Abrahamsen @ 2019-10-10 17:06 UTC (permalink / raw)
To: ding
Eric S Fraga <e.fraga@ucl.ac.uk> writes:
> On Wednesday, 9 Oct 2019 at 20:38, dick.r.chiang@gmail.com wrote:
>> SPC is `gnus-summary-next-page` from the summary buffer. If the article
>> contains a large image, SPC stops scrolling upon hitting the image.
>
> Just to add that I see this as well. If the image is larger than the
> window, possibly in either dimension, scrolling doesn't happen.
My understanding is that this is a general problem with image display in
Emacs, nothing particular to Gnus. Something about how Emacs calculates
line heights when scrolling -- maybe images are calculated to fit on a
single really tall line, so you can only scroll all the way past them?
Something like that.
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [26.3] large image scrolling gets stuck
2019-10-10 17:06 ` Eric Abrahamsen
@ 2019-10-10 17:18 ` dick
2019-10-10 17:57 ` Eric Abrahamsen
0 siblings, 1 reply; 9+ messages in thread
From: dick @ 2019-10-10 17:18 UTC (permalink / raw)
To: ding
Yes, that sounds right. Would be nice to get confirmation on 26.2 and 27.050
not exhibiting this bug.
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [26.3] large image scrolling gets stuck
2019-10-10 17:18 ` dick
@ 2019-10-10 17:57 ` Eric Abrahamsen
2019-10-10 18:20 ` dick
0 siblings, 1 reply; 9+ messages in thread
From: Eric Abrahamsen @ 2019-10-10 17:57 UTC (permalink / raw)
To: ding
dick <dick.r.chiang@gmail.com> writes:
> Yes, that sounds right. Would be nice to get confirmation on 26.2 and 27.050
> not exhibiting this bug.
I think all versions have this behavior -- no one has implemented
sub-line scrolling yet.
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [26.3] large image scrolling gets stuck
2019-10-10 17:57 ` Eric Abrahamsen
@ 2019-10-10 18:20 ` dick
2019-10-10 18:53 ` Eric Abrahamsen
2019-10-11 8:20 ` Andreas Schwab
0 siblings, 2 replies; 9+ messages in thread
From: dick @ 2019-10-10 18:20 UTC (permalink / raw)
To: ding
I'm referring to the descaled images in the versions straddling emacs 26.3.
For whatever reason, 26.3 shows a bigger image than 26.2 and 27.0.50.
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [26.3] large image scrolling gets stuck
2019-10-10 18:20 ` dick
@ 2019-10-10 18:53 ` Eric Abrahamsen
2019-10-11 8:20 ` Andreas Schwab
1 sibling, 0 replies; 9+ messages in thread
From: Eric Abrahamsen @ 2019-10-10 18:53 UTC (permalink / raw)
To: ding
dick <dick.r.chiang@gmail.com> writes:
> I'm referring to the descaled images in the versions straddling emacs 26.3.
> For whatever reason, 26.3 shows a bigger image than 26.2 and 27.0.50.
Oh, I don't know, then -- maybe that's something you'd want to raise on
emacs.devel.
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [26.3] large image scrolling gets stuck
2019-10-10 18:20 ` dick
2019-10-10 18:53 ` Eric Abrahamsen
@ 2019-10-11 8:20 ` Andreas Schwab
2019-10-11 16:10 ` dick
1 sibling, 1 reply; 9+ messages in thread
From: Andreas Schwab @ 2019-10-11 8:20 UTC (permalink / raw)
To: dick; +Cc: ding
On Okt 10 2019, dick <dick.r.chiang@gmail.com> wrote:
> I'm referring to the descaled images in the versions straddling emacs 26.3.
If you want image scaling in emacs < 27 you need ImageMagick.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1
"And now for something completely different."
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [26.3] large image scrolling gets stuck
2019-10-11 8:20 ` Andreas Schwab
@ 2019-10-11 16:10 ` dick
0 siblings, 0 replies; 9+ messages in thread
From: dick @ 2019-10-11 16:10 UTC (permalink / raw)
To: ding
Somehow a local deinstall of imagemagick (IM) coincided with my compile of
emacs-26.3 leading me to believe image descaling broke in 26.3. Sorry,
nothing to see here.
In my opinion, Gnus is unusable without IM's descaling, and so is
unusable for a big chunk of users whose systems lack IM libraries. I hear
murmurs of emacs's emancipation from IM, which seems key if Gnus is to reach
a wider audience.
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2019-10-11 16:10 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
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2019-10-10 0:38 [26.3] large image scrolling gets stuck dick.r.chiang
2019-10-10 5:54 ` Eric S Fraga
2019-10-10 17:06 ` Eric Abrahamsen
2019-10-10 17:18 ` dick
2019-10-10 17:57 ` Eric Abrahamsen
2019-10-10 18:20 ` dick
2019-10-10 18:53 ` Eric Abrahamsen
2019-10-11 8:20 ` Andreas Schwab
2019-10-11 16:10 ` dick
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