From: Vincent Lefevre <vincent@vinc17.net>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 44284@debbugs.gnu.org
Subject: bug#44284: 27.1; with some Unicode font, scrolling upward with the mouse wheel actually scrolls downward when the cursor needs repositioning
Date: Sat, 7 Nov 2020 11:35:35 +0100 [thread overview]
Message-ID: <20201107103535.GF27593@zira.vinc17.org> (raw)
In-Reply-To: <83r1p57eoy.fsf@gnu.org>
On 2020-11-07 10:29:17 +0200, Eli Zaretskii wrote:
> > Date: Sun, 01 Nov 2020 20:47:04 +0200
> > From: Eli Zaretskii <eliz@gnu.org>
> > Cc: 44284@debbugs.gnu.org
> >
> > > Alternatively, Emacs could use some heuristic: if extents.y_bearing
> > > is very close to an integer, assume that it should be this integer.
> > > This is rather ugly as this might yield unexpected results in some
> > > applications, but would this be OK in Emacs?
> >
> > It would be okay, I think: we have a few kludgey workarounds for
> > similar issues in other libraries.
> >
> > I thought about something like using ceil (VALUE - 1/128) or maybe
> > even 1/256, on the assumption that the original integer value cannot
> > be of a greater granularity (the non-Cairo code uses 1/64).
>
> No further comments, so I pushed such a fix to the master branch, and
> I'm closing this bug report. Many thanks for your help in debugging
> this problem.
I've just tested, and I confirm that this completely fixes the bug.
Thanks.
--
Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
next prev parent reply other threads:[~2020-11-07 10:35 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-28 16:36 bug#44284: 27.1; with some Unicode font, scrolling upward with the mouse wheel actually scrolls downward when the cursor needs repositioning Vincent Lefevre
2020-10-28 16:44 ` Vincent Lefevre
2020-10-28 16:53 ` Eli Zaretskii
2020-10-30 10:52 ` Vincent Lefevre
2020-10-30 11:31 ` Eli Zaretskii
2020-10-30 13:33 ` Vincent Lefevre
2020-10-30 13:37 ` Eli Zaretskii
2020-10-30 16:31 ` Vincent Lefevre
2020-10-30 20:34 ` Vincent Lefevre
2020-10-30 20:57 ` Vincent Lefevre
2020-10-30 21:09 ` Eli Zaretskii
2020-10-30 23:00 ` Vincent Lefevre
2020-10-31 0:46 ` Vincent Lefevre
2020-10-31 1:13 ` Vincent Lefevre
2020-10-31 7:38 ` Eli Zaretskii
2020-10-31 22:43 ` Vincent Lefevre
2020-11-01 0:24 ` Vincent Lefevre
2020-11-01 0:28 ` Vincent Lefevre
2020-11-01 16:15 ` Eli Zaretskii
2020-11-01 16:15 ` Eli Zaretskii
2020-11-01 17:32 ` Vincent Lefevre
2020-11-01 17:43 ` Eli Zaretskii
2020-11-01 18:34 ` Vincent Lefevre
2020-11-01 18:47 ` Eli Zaretskii
2020-11-01 21:13 ` Vincent Lefevre
2020-11-07 8:29 ` Eli Zaretskii
2020-11-07 10:35 ` Vincent Lefevre [this message]
2020-11-07 13:22 ` Eli Zaretskii
2020-11-01 15:55 ` Eli Zaretskii
2020-11-01 17:26 ` Vincent Lefevre
2020-10-30 20:58 ` Eli Zaretskii
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