I want to bind key that switchs background_opacity value between 0.9 and 1.0 and immedialty shows the result in Alactitty terminal. There is no action in key_bindings for this purpose.
I have live_config_reload enabled, so one possible approach is write zsh function, that will change alacritty.yml file.
1 Answer
I happened upon this question while looking for the same feature and ended up implementing it myself. I have included a demo of the working in my blog.
For completeness, I will include the steps here.
~/bin/toggle_alacritty_opacity
#!/usr/bin/env bash ## If alacritty.yml does not exist, raise an alert [[ ! -f ~/.config/alacritty/alacritty.yml ]] && \ notify-send "alacritty.yml does not exist" && exit 0 ## Fetch background_opacity from alacritty.yml opacity=$(awk '$1 == "background_opacity:" {print $2; exit}' \ ~/.config/alacritty/alacritty.yml) ## Assign toggle opacity value case $opacity in 1) toggle_opacity=0.9 ;; *) toggle_opacity=1 ;; esac ## Replace opacity value in alacritty.yml sed -i -- "s/background_opacity: $opacity/background_opacity: $toggle_opacity/" \ ~/.config/alacritty/alacritty.yml Make the above script executable by running in the terminal:
chmod +x ~/bin/toggle_alacritty_opacity
Ensure that you have the following line in ~/.zshrc or ~/.bashrc
## In order to use the executable scripts inside ~/bin directly export PATH=$HOME/bin:$PATH Now running toggle_alacritty_opacity from your terminal will toggle alacritty's opacity.
Bonus
If you're using i3 WM, append the following lines to ~/.config/i3/config
## Toggling alacritty opacity in i3 (inside ~/bin) bindsym $mod+Shift+a exec --no-startup-id toggle_alacritty_opacity Now you have a key binding to toggle alacritty's opacity.
