Add mouse scroll support

[quintenroets]

This PR resolves #544

the scroll button can now be remapped as follows:

[main]
mouse1 = layer(buttons)

[buttons]
scrolldown = C-tab
scrollup = C-S-tab

When no mapping is specified, the behavior defaults to normal scrolling.

[hisbvdis]

@quintenroets , I tried to build your version from your repository. Unfortunatelly, it didn't work.
Bun I'm newbie and maybe I did something wrong

[quintenroets]

@quintenroets , I tried to build your version from your repository. Unfortunatelly, it didn't work. Bun I'm newbie and maybe I did something wrong

@hisbvdis are you able to build the main repository from source? https://github.com/rvaiya/keyd?tab=readme-ov-file#from-source

[kevinfiol]

Thanks, this worked great for me on Debian Bookworm w/ Wayland, with the exception that sudo keyd monitor does not show when I move my scroll wheel up/down.

These were the steps I followed:

git clone -b support-scroll-mapping https://github.com/quintenroets/keyd.git
cd keyd
make
sudo make install
sudo systemctl enable keyd && sudo systemctl start keyd

Then added my configuration in the default conf file w/ sudo nano /etc/keyd/default.conf. My config is for controlling my system volume via hotkeys defined in GNOME keyboard shortcuts:

[ids]
*

[main]
mouse1 = layer(volume)

[volume]

scrolldown = macro(leftmeta+kpminus)
scrollup = macro(leftmeta+kpplus)

After which, I ran sudo keyd reload and it worked as expected. Great work!