KWin Grayscale Effect

Configurable grayscale effect for KWin window manager and KDE desktop environment.

Installation

1. Download or Git Pull
2. Copy "kwin4_effect_grayscale" folder to "/usr/share/kwin/effects/", using e.g.

sudo cp -r kwin4_effect_grayscale /usr/share/kwin/effects/

3. Copy "kwin4_effect_grayscale/metadata.json" to "/usr/share/kservices5/kwin/", using e.g.

sudo cp kwin4_effect_grayscale/metadata.json /usr/share/kservices5/kwin/

4. Add "kwin4_effect_grayscaleEnabled=true" to "[Plugins]" section in "~/.config/kwinrc" (as a normal user). In case the [Plugins] section is missing from the kwinrc file, just add it.

To test it for the first time, open System Settings > Desktop Behavior. In there, open Desktop Effects. You should see Grayscale in the Appearance section. Toggle it a couple of times, and you'll see the grayscale effect at work.

Known Quirks

• Settings doesn't apply:
  • In System Settings, uncheck "Grayscale" and re-check then apply.
  • Make sure the persmissions in are set to drwxr-xr-x for the kwin4_effect_grayscale folder and its content. If not, run (as root)

    chmod 755 /usr/share/kwin/effects/kwin4_effect_grayscale/
    find /usr/share/kwin/effects/kwin4_effect_login/ -type d -exec chmod 755 {} +.