volume-widget: added arguments, fixed colors for light themes

[Luka5W]

added options

• card: amixer -c [card]
  • multiple cards support
• value_type: amixer -M or -R
  • from the command help:

    -R,--raw-volume Use the raw value (default)
    -M,--mapped-volume Use the mapped volume
    

    no idea how this actually works, but lowering the volume using -R takes big steps at first and then they become smaller.
    when using -M the steps stay constant (5% relative to 100%/ 0dB)
• mixctrl: (amixer [args] [command] [mixctrl] [command ct'd])
  • multiple mixers support
  • fixes volume-widget: Mixer selection #396 (used the same key for compatibility with the awesome rc.lua of those users who applied the code suggested in the issue)
• toggle_cmd: overrides amixer ... command for (un)muting
  • allows users to replace the broken amixer sset [mixer] toggle command which uses amixer sset [mixer] [un]mute with anything like pactl set-sink-mute 0 toggle which worked for me

fixed colors for light themes

only for volume, i might create additional PRs for other widgets i use (see ).

tested with themes:

• gtk (with little patches to be a complete light theme)
• default

fixed get volume cmd

see #df4dd6d
-M was forgotten so amixer used -R as fallback

todo

please let me know if the changes are ok, i will then update the readme before merging.

[streetturtle]

Hey! Thanks for the PR! 👍
Looks good - I'll be able to test it later this weekend. Meanwhile, could you please update the readme.

[streetturtle]

Thank you!