Custom backend command

[musjj]

It'd be nice if we can provide a custom command/script for the backend.

For example if you wanted to have a custom random transition with swww, you can specify a script to the config:

# Picks a random corner to start the transition from
swww img \
  -t $(shuf -n 1 <<<$'grow\nouter') \
  --transition-pos $(shuf -n 1 <<<$'top-left\ntop-right\nbottom-right\nbottom-left') \
  $1 # the passed image

[anufrievroman]

It's an interesting idea and the post_command option in config almost does that, except that waypaper will always issue its own command to change the wallpaper. So, the most elegant solution that I see is to introduce the possiblity to select None as backend, and then waypaper will work just as filepicker and your post_command script will do all the job.

[anufrievroman]

Implemented this in main. Now, if you chose none backend, the waypaper will not try to issue a backend command but only execute a post_command from config, there you can write any script that uses $wallpaper variable.

[anufrievroman]

I'll consider this issue resolved then.