wob — Wayland Overlay Bar

A lightweight overlay volume/backlight/progress/anything bar for Wayland. This project is inspired by xob - X Overlay Bar.

Installation

meson build-release --buildtype release
ninja -C build-release
sudo ninja -C build-release install

There are packages for the following Linux distributions:

Arch Linux package on the AUR

Usage

Launch wob in a terminal, enter a value (positive integer), press return.

wob

General case

You may manage a bar for audio volume, backlight intensity, or whatever, using a named pipe. Create a named pipe, e.g. /tmp/wobpipe, on your filesystem using.

mkfifo /tmp/wobpipe

Connect the named pipe to the standard input of an wob instance.

tail -f /tmp/wobpipe | wob

Set up your environment so that after updating audio volume, backlight intensity, or whatever, to a new value like 43, it writes that value into the pipe:

echo 43 > /tmp/wobpipe

Adapt this use-case to your workflow (scripts, callbacks, or keybindings handled by the window manager).

Sway WM example

exec mkfifo /tmp/wobpipe && tail -f /tmp/wobpipe | wob

Volume using alsa:

bindsym XF86AudioRaiseVolume exec amixer -q set Master 2%+ unmute && amixer sget Master | grep 'Right:' | awk -F'[][]' '{ print substr($2, 0, length($2)-1) }' > /tmp/wobpipe
bindsym XF86AudioLowerVolume exec amixer -q set Master 2%- unmute && amixer sget Master | grep 'Right:' | awk -F'[][]' '{ print substr($2, 0, length($2)-1) }' > /tmp/wobpipe

Volume using pulse audio:

bindsym XF86AudioRaiseVolume exec pamixer -ui 2 && pamixer --get-volume > /tmp/wobpipe
bindsym XF86AudioLowerVolume exec pamixer -ud 2 && pamixer --get-volume > /tmp/wobpipe

Brightness using haikarainen/light:

bindsym XF86MonBrightnessUp exec light -A 5 && light -G | cut -d'.' -f1 > /tmp/wobpipe
bindsym XF86MonBrightnessDown exec light -U 5 && light -G | cut -d'.' -f1 > /tmp/wobpipe

License

ISC, see LICENSE.

phwelo / wob