Toggle KDE Color Blindness Correction from CLI

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1

Hi, I am somewhat colorblind and really like the filters introduced recently. However, I only need them when I am unsure about colors (i.e. looking at graphs) and prefer them to be off otherwise.

I have so far managed to change the setting by using

kwriteconfig5 --file kwinrc --group 'Plugins' --key "colorblindnesscorrectionEnabled" true/false

but I can’t seem to apply them without doing a full reboot, which obviously makes it quite pointless.

If anyone could point me in the right direction to “apply” from the cli, I would be greatful for your help!

2

It seems you are using Plasma 5, for plasma 6 you need to use kwriteconfig6.

As a workaround, you can put this script in .bash_profile so that it runs on login, or in the startup programs in systemsettings.

3

First of all, thanks for your help!

My goal in the end is to activate it only when needed using a keyboard shortcut so that I can have the normal colors most of the time. Therefore a reboot would be rather impractial. Changing the setting itself works using kwriteconfig6 but it is not applied (as in I can see the change happens in the settings but the filter itself is not applied until I reboot).

4

I have found the solution for anyone stumbling upon this. I found the name of the filter in KDE’s debug console and then use qdbus to toggle the effect:

qdbus --literal org.kde.KWin /Effects org.kde.kwin.Effects.toggleEffect colorblindnesscorrection

I put that into a shell script and can now toggle it with a keyboard shortcut which is very convenient.

5

The keyboard shortcut UI should also directly offer this functionality, instead of needing to set up a shell script. (And the filter setup page should include the keyboard shortcut reference widget.)

The point of a color blindness correction filter is to toggle it to see which colors change under the filter and which don’t.