nwg-wrapper

This program is a GTK3-based wrapper to display a script output, or a text file content on the desktop in sway or other wlroots-based compositors. It uses the gtk-layer-shell library to place the window on the bottom layer.

As well the script output, at the text file may be formatted with Pango Markup. The window appearance is defined with css styling. See sample files in the config folder. They also come preinstalled in your ~/.config/nwg-wrapper directory. You can find an example of use at the bottom of the page.