wob — Wayland Overlay Bar
A lightweight overlay volume/backlight/progress/anything bar for Wayland. This project is inspired by xob - X Overlay Bar.
Installation
git clone --recursive git@github.com:francma/wob.git
cd wob
meson build-release --buildtype release
ninja -C build-release
sudo ninja -C build-release install
There are packages for the following Linux distributions:
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 $SWAYSOCK.wob && tail -f $SWAYSOCK.wob | 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) }' > $SWAYSOCK.wob
bindsym XF86AudioLowerVolume exec amixer -q set Master 2%- unmute && amixer sget Master | grep 'Right:' | awk -F'[][]' '{ print substr($2, 0, length($2)-1) }' > $SWAYSOCK.wob
Volume using pulse audio:
bindsym XF86AudioRaiseVolume exec pamixer -ui 2 && pamixer --get-volume > $SWAYSOCK.wob
bindsym XF86AudioLowerVolume exec pamixer -ud 2 && pamixer --get-volume > $SWAYSOCK.wob
Brightness using haikarainen/light:
bindsym XF86MonBrightnessUp exec light -A 5 && light -G | cut -d'.' -f1 > $SWAYSOCK.wob
bindsym XF86MonBrightnessDown exec light -U 5 && light -G | cut -d'.' -f1 > $SWAYSOCK.wob
License
ISC, see LICENSE.