GNU bug report logs -
#57526
29.0.50; Precise pixel-scrolling works great with touchpad but not with mouse wheel
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Po Lu <luangruo <at> yahoo.com> writes:
>> The reason for the difference is that the EVENTs passed to
>> pixel-scroll-precision have very different delta values. The
>> touchpad events command emacs to scroll about 20 pixels, the mouse
>> wheel events command it to scroll 150 pixels.
>
> Try playing with pixel-scroll-precision-large-scroll-height; start
> with a value of 30, and adjust it upwards if it interferes with
> trackpad scrolling.
Oh, yes, that does the trick. I don't actually feel much of a
difference (if any) no matter if I set it to 10 vs. 140. It seems it
must be at least smaller as the delta in the mouse wheel events (150) in
order to have any effect but that's it. So I went with 140.
>> I see there's some interpolation feature which might be relevant but
>> I don't get into that code path because (device-class
>> last-event-frame last-event-device) returns core-keyboard instead of
>> mouse. I get that value in both the case where I scrolled using
>> touchpad as well as mouse. When I typed something with the real
>> keyboard, it says just keyboard.
>
> That part of the code will be reworked soon in accordance with an
> earlier discussion, and you can assist with that by sending the result
> of running "xinput list --long", which will help determine why your
> mouse is not being recognized by Emacs.
The short list is:
--8<---------------cut here---------------start------------->8---
❯ xinput list
WARNING: running xinput against an Xwayland server. See the xinput man page for details.
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ xwayland-pointer:39 id=6 [slave pointer (2)]
⎜ ↳ xwayland-relative-pointer:39 id=7 [slave pointer (2)]
⎜ ↳ xwayland-pointer-gestures:39 id=8 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ xwayland-keyboard:39 id=9 [slave keyboard (3)]
--8<---------------cut here---------------end--------------->8---
Interestingly, that list is the same no matter if I plugged my mouse
into my notebook's USB slot or if it is not connected.
The long list is attached.
[xinput-list-long.txt (text/plain, attachment)]
[Message part 3 (text/plain, inline)]
Bye,
Tassilo
This bug report was last modified 2 years and 349 days ago.
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