dark-toggle

A shell script that toggles between the dark and light variants of the current GTK theme. Works for the GNOME shell theme and icon themes too. POSIX compliant.

Demo

dark-toggle-swaywm.mp4

For more demos of dark-toggle running on the default GNOME Shell and Ubuntu can be found below.

Highlights

• Easy and instantaneous. Toggle darkness at will!
• Works the same for Window Managers and the Gnome Shell alike. No need to have any Gnome Shell Extensions installed!
• Is extendable using hooks (WIP). Changing the theme of your terminal emulator will soon be possible!
• Can easily be used as a hook in other programs like gammastep and redshift.
• No need to wait for a day/night cycle.
• No mouse interaction needed.

Dependencies

• gsettings
• notify-send with an appropriate notification daemon installed.

Installation

Install system-wide for all users (requires root user or sudo):

make

Install for current user only:

make PREFIX=~/.local

For current-user only, make sure ~/.local/bin is in your $PATH.

Usage

Just run dark-toggle or use an app launcher to search and run Dark Toggle. CLI options are not added yet, but see Configuration.

Configuration

By default, dark-toggle only changes the GTK Applications theme. However, further options can be added as necessary from the table below:

Option	Description
change-shell	Also change the GNOME Shell theme. (GNOME Shell must be running and User Themes extension must be installed.)
change-icons	Also change the icon theme.
exec-hooks	Execute a hook each time dark-toggle is run (not implemented yet)

The config file can also be used to add user-defined mappings between light and dark variant of themes.

Example of a config file:

# ~/.config/dark-toggle/config

## Options
#
# Guess the icon name from the gtk theme name and change to it
change-icons

# Also change the gnome shell theme
change-shell

# Run hooks found in hooks dir
exec-hooks

# Put user-defined mappings and also mappings for theme names that cannot be guessed.
mappings {
	# Light		Dark
	Adapta		Adapta-Nokto
	Plata		Plata-Noir
	Qogir-win	Qogir-dark
	Plata-Lumine	Plata-Noir
}

This is also useful when a theme might have more than two variants and the user would like to specify which of the two variants they would like to use.

More Demos

GNOME Shell

Adwaita theme

1.Adwaita.mp4

Plata theme

2.Plata.mp4

ZorinGreen theme

3.ZorinGreen.mp4

Ubuntu

Demoing on the themes Yaru, Adwaita and Materia:

http://0x0.st/osSc.mp4

Note:

The demos shown here are using the excellent Dark Reader add-on for Firefox.

Those looking for a Gnome Shell Extension, as opposed to this cli tool, can try the Night Theme Switcher extension... But have you seen this tool's #Highlights?

Credits

This repo was made from a GitHub Gist where I appreciated much help from newnix.