Shortcuts to enable/disable desktop effect

[JotaJota96]

I need to be able to enable/disable a specific desktop effect using keyboard shortcuts.
Specifically I would like to switch between the "Looking Glass" and "Zoom" options
Is there any way to do it?

[Don B. Cilly]

Er... sorry, misunderstood question, gave wrong answer :·/

Now if it can't be done directly, you could do it indirectly :·)
That is, make two scripts that replace your kwinrc ( probably in ~/.config/ ) with the one of your choice... (call those with shortcuts)... and restart kwin. :·(
Which basically means restarting Plasma... not something I would want to try.

Thing is, my guess is, it can't be done without restarting Plasma.
Sorry I can't be of more help, but since I'd answered (wrongly) anyway...

[JotaJota96]

What I want is to achieve a similar operation to what Microsoft Windows offers.
In Microsoft Windows I use the following keyboard shortcuts to manipulate the magnifying glass:
Ctrl + + for zoom in
Ctrl + - to zoom out
Ctrl + alt + F for full screen mode
Ctrl + alt + L for lens mode

The first two I managed to configure, the problem is the last two.

I understand that I can make a script and execute it using a shortcut, but:
What is the command to change from "Looking Glass" to "Zoom"?
And from "Zoom" to "Looking Glass"?

[Don B. Cilly]

Well, lens and full screen seem to be separate effects.
As you say, Looking Glass and Zoom.
Zoom has a few more options than the others (including Magnifier that is), but not what you want:



So, what I was suggesting was, copy your kwinrc to kwinrc_1 when you have it in one mode (that you're satisfied with), and to kwinrc_2 when in the other.
While you're at it copy it to kwinrc.bak just in case :·)
Then you can
cp kwinrc_1 kwinrc
(or kwinrc_2) and assign shortcuts to those commands
then... restart Plasma.

Which is probably not a good idea, as restarting Plasma is not something you'd want to do unless you had serious problems with it.
Just to say, I don't think there is a simple way to do it.
Which doesn't mean someone else who actually knows something about this won't know of one.

Again, sorry I answered this, misunderstood question, gave wrong answer :·/, and I guess I'm just digging myself further down the hole... :·)

[JotaJota96]

I made a script, which does what you say, exchange two configuration files, one for each case.

#!/bin/bash

originalConfigFile="/home/$USER/.config/kwinrc"
auxiliarConfigFile="/home/$USER/.scripts/kwinrc"
temporalConfigFile="/home/$USER/.scripts/kwinrc.tmp"

if [ ! -e $originalConfigFile ]; then
  echo "ERROR: File does not exist $originalConfigFile"
  exit 1
fi
if [ ! -e $auxiliarConfigFile ]; then
  echo "ERROR: File does not exist $auxiliarConfigFile"
  exit 1
fi

mv $originalConfigFile $temporalConfigFile
mv $auxiliarConfigFile $originalConfigFile
mv $temporalConfigFile $auxiliarConfigFile

kwin_x11 --replace & disown

exit 0

It seems to work fine, although it is uncomfortable to restart Kwin every time.
It is a very inefficient solution, it seems to me that Linux in general should improve its accessibility features, they are very limited (at least for my needs)
Even so, I will be aware of new responses in this thread

[Don B. Cilly]

Now, contrary to my cilly suggestions in this thread, which were not any good... what might be good (for your purpose, and in general) could be:
Sign up on https://forum.kde.org/ and ask your question there. It's worth signing up anyway - if you like KDE.

If they don't have a solution - they might - chances are someone there can actually modify the whole looking-glass/magnifier effect to make it better.