Scrolling is too fast on on mac touchpad

[Mantene]

Describe the bug

I am using LSIO's Chrome, DoubleCommander, and Firefox docker containers and they all seem to have the same issue - trying to scroll a few lines using the macbook trackpad causes it to scroll superfast way past what I wanted to see. I don't have this issue when I am using my mouse or trackball - only when using the built-in mac trackpad. It will add that there is a closed bug #99 that seemed to be about the same issue, but it was closed last year.

To Reproduce

Open LSIO Chome or Firefox or DoubleCommander in the browser of your choice (I tend to use Chrome but Firefox works too). Go to the page you want to visit and gently place two fingers on the the trackpad and gently move them down (or up if you have disabled natural scrolling).

Expected behavior

I would expect the page to move at a speed similar to that of my fingers, maybe a bit faster. Instead, it is as if Dark Helmet ordered Ludicrous Scrolling Speed.

Screenshots

• Host OS Version: Client - MPB running MacOS 26.0.1 / Container Host - Unraid 7.1.4
• Host GPU Model and Driver/Encoder Version: Client - MPB M1 with no discrete GPU / Container Host - NVIDIA GeForce GTX 1660 v580.82.09
• Browser Version: Client - Chrome 142.0.7444.23 / Container Host: LSIO docker-chome 141.0.7390.107-1
• Any other information specific to your environment

Additional context

I have tried with various version of Chrome and Firefox. I only listed Chrome in the "Browser Version" above, but again, other browsers produce the same issue, and other LSIO containers using Selkies, such as Firefox and DoubleCommander show the same issue.

There is a CLOSED issue that looks like it was resolved, but again, this is happening in the present - perhaps newer changes reintroduced the issue? That ticket was #99

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docker-Chrome.log
docker-Doublecommander.log

[ehfd]

This is LSIO. @thelamer

[thelamer]

The logic for that is here, we simulate mouse scroll wheel from a threshold
https://github.com/selkies-project/selkies/blob/main/addons/gst-web-core/lib/input.js#L2040-L2071

There is not really a pipeline for "send this two finger gesture to linux directly" so it is translated, if you can find a better balance I am open to changes but this is the closest I could get it.

You can make changes to it and test with:

git clone https://github.com/selkies-project/selkies.git
cd selkies
<make code changes>
docker run --rm -it \
  --shm-size=1gb \
  -e DEV_MODE=selkies-dashboard \
  -e PUID=1000 \
  -e PGID=1000 \
  -v $(pwd):/config/src \
  -p 3001:3001 ghcr.io/linuxserver/webtop bash