nwg Control Center is a highly customisable, GTK-based GUI, intended for use with window managers. It may serve as an extension to bars / panels, providing built-in and user-defined controls. Default theme may be overridden with custom css style sheets.

Main window, Nordic-bluish-accent GTK theme, icons Custom light:

More screenshots

This code was primarily written in python and published as nwgcc. As I wanted it to work a bit faster, and also to learn something new, I translated it into Go, using the gotk3 library. This is my very first more serious code in golang. I'm 100% sure it may be improved in many ways.

• go
• gtk3

The above seems to be enough on Arch Linux. On other distributions you may also need libgtk-3, libglib2 and libgdk-pixbuf2. Check the reference on https://github.com/gotk3/gotk3.

For built-in components to work, you need external commands / dependencies as below. If you don't need one, you may skip installing related packages (e.g. on a desktop machine, you probably don't need the brightness slider).

• light: for Brightness slider
• alsa, alsa-utils: for Volume slider
• playerctl: for mpris media player controller buttons
• wireless_tools: for Wi-fi status
• bluez, bluez-utils: for Bluetooth status

Sample user defined commands use blueman and NetworkManager.

• Install dependencies and your selection of optional dependencies.
• git clone https://github.com/nwg-piotr/nwgocc.git
• cd nwgocc
• make get (This may take a while; provided that no new libraries added, you may skip this step next time.)
• make build
• sudo make install

sudo make uninstall

Usage of nwgocc:
  -c string
    	user's templates: Config file name (default "config.json")
  -d	Do checks, print results
  -p	place window at the mouse Pointer position (Xorg only)
  -r	Restore defaults (preferences, templates and icons)
  -s string
    	custom Styling: css file name (default "style.css")
  -v	display Version information

Click the Preferences button to adjust the window to your needs. For your own custom styling, either modify the ~/.config/nwgocc/style.css file, or place your own whatever.css in the same folder, and use the -s flag.

You may also make a copy of ~/.config/nwgocc/config.json under another name, for further use with the -c flag.

• GUI uses the gotk3 package, Copyright (c) 2013-2014 Conformal Systems LLC, Copyright (c) 2015-2018 gotk3 contributors, released under the terms of the ISC License.

• Volume control relies on the volume-go package, Copyright (c) 2017-2020 itchyny, released under the terms of the MIT License.

• Handling multiple instances relies on the go-singleinstance library, Copyright (c) 2015 Allan Simon, released under the terms of the MIT License.

• Most of custom icons come from my favorite Papirus icon theme, released under the terms of the GNU General Public License, version 3.