Redshift GUI Slider

A minimal Python GUI to control screen color temperature using Redshift, with a simple slider interface.

Features

• Adjust color temperature with a horizontal slider (3000K–6500K)
• Instant effect on slider release
• Optional autostart on system login
• Built with tkinter, lightweight and dependency-free

Requirements

• Python 3
• Redshift
• Linux (X11-based desktop environment, e.g. GNOME Xorg. This won't work on Wayland based GNOME.)

Installation

1. Install Redshift (if not already installed):

   sudo apt install redshift
   

2. Clone this repository:

   git clone https://github.com/yourusername/redshift-gui-slider.git
   cd redshift-gui-slider
   chmod +x redshift-gui.py
   
   

3. Run the script manually:

   ./redshift-gui.py
   

4. (Optional) Enable autostart on login:

   mkdir -p ~/.config/autostart
   cp redshift-gui.desktop ~/.config/autostart/
   

Ensure the Exec= path in redshift-gui.desktop matches your script location.

How It Works

When the slider is released:

redshift -x          # Reset Redshift
redshift -O <temp>   # Apply selected color temperature

• Default: 4500K
• Range: 3000K to 6500K

License

MIT License -- free to use, modify, and distribute.