From: Campbell Barton <ideasman42@gmail.com>
To: Emacs developers <emacs-devel@gnu.org>
Subject: Support for explicitly resetting the idle timer?
Date: Sat, 27 Nov 2021 18:54:56 +1100 [thread overview]
Message-ID: <1d3c782b-6e79-8deb-e34d-f53b94f2fd9c@gmail.com> (raw)
Hi, I've run into a situation where being able to reset the idle time is
needed. As far as I can tell there is no way to do this at the moment.
So I'm writing to check if a patch to support this is likely to be
considered.
To give some context for how I ended up needing this, the motivation for
this is noted below.
Motivation
==========
There is a package I use/maintain which implements something like
Firefox's auto-scroll (click-drag to scroll up/down) [0].
An issue with this is (unlike mouse wheel scrolling) using track-mouse
doesn't handle keyboard events in a way that resets the idle timer.
So while scrolling, idle timers may run (which can cause visible
stuttering).
I've worked around this by locally let binding `timer-idle-list` to nil,
however this back-fires if any timers are added while scrolling (rare
but possible), workarounds for this are possible - but they involve
clearing the list while scrolling then moving the contents into the real
`timer-idle-list` list... which as far as I can see is quite error
prone, especially if packages are inspecting the contents of this list.
All this complexity could be avoided if the function `timer_stop_idle`
in ./src/keyboard.c was exposed to elisp, this way scripts that use
mouse input could explicitly reset the idle timer on mouse based
user-interaction (when it makes sense).
Other solutions could work too (perhaps something specific to
`track-mouse`), but I think having a way to reset the idle timer is most
straightforward.
[0]: https://gitlab.com/ideasman42/emacs-scroll-on-drag
next reply other threads:[~2021-11-27 7:54 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-27 7:54 Campbell Barton [this message]
2021-11-27 8:02 ` Support for explicitly resetting the idle timer? Eli Zaretskii
2021-11-27 8:42 ` Campbell Barton
2021-11-27 9:01 ` Eli Zaretskii
2021-11-27 9:14 ` Campbell Barton
2021-11-27 10:11 ` Eli Zaretskii
2021-11-27 10:21 ` Campbell Barton
2021-11-27 10:54 ` Eli Zaretskii
2021-11-27 11:16 ` Campbell Barton
2021-11-27 11:33 ` Eli Zaretskii
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