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Force Blur

A KWin script to force-enable KWin Blur effect on user-specified windows.

This is more useful than shell script hacks, because KWin script receives event notification and window info from KWin. This can also fix tray-based apps, which loses blur hints when restored from system tray.

System Requirement

How to Use

  1. Install the script.

  2. Run the following in terminal, to enable script configuration:

     mkdir -p ~/.local/share/kservices5/
     cp ~/.local/share/kwin/scripts/forceblur/metadata.desktop ~/.local/share/kservices5/forceblur.desktop
    
  3. Open Kwin Scripts page in System Settings.

  4. Enable Force Blur script by checking the checkbox next to it.

  5. Change script settings. Note that the script can only match with window classes.

  6. Click OK to enable the script.

  7. Whenever settings are changed, you must disable and re-enable the script.
    (Uncheck -> Apply -> Check -> Apply)

GTK CSD Shadow

Some GTK applications render client-side shadows, which look ugly if blurred. To prevent this, you can enable "Blur only the content of window" option.

This works by updating the blur region info whenever a window is resized, so might have some performance impacts. Use with caution.

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