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Trying i3 for a while, one thing I really miss are nested keyboard shortcuts. For example, I can press Alt+M to enter media mode (could be anything), from where I can press p for play/pause, n for next, etc. Maybe a small script would be enough to add this functionality, but I have no idea how this could be done. What do you think about this?

ismxy wrote:Trying i3 for a while...

What exactly are you referring to? I know a car with that name, but in the context of our software not so much. Please be a tad more precise what exact application you are talking about

I'm talking about the i3 tiling window manager (https://i3wm.org/).

Hi!

Do you want to know how to implement this via GUI, like a little menu in system tray? Have a look at https://kdesrc-build.kde.org/ to get an idea on how to start and https://github.com/KDE/kglobalaccel to add your changes to the basic shortcut package.

Plasma really does not support something similar?

I can set to show Activity Panel by pressing ALT+D,ALT+A (probably this is the default shortcut).

As far, as I understood you need rather something like switchable keyboard layout, but really you cannot use existing feature, I suggest?

Lachu wrote:Plasma really does not support something similar?

You can have multiple ones since last year ⇨ https://blog.david-redondo.de/kde/2021/02/03/keys.html but afaik you cannot make a sub group with additional commands like in i3.
ALT+D,ALT+A is implemented in the plasmashell code itself and not configurable via system settings, I think. There was a bigger focus on gestures which are groupable for different active windows (see systemsettings5 — custom shortcuts).

I really want to implement this, but I have no idea where to start. Can I do those changes on the system I use for everything else? How do I get this change into KDE? How should I test this? And how can I learn more about how kglobalaccel works? I have some experience with C++, but I haven't worked on such a big project.

I think the easiest approach would be to write a daemon or plasmoid which will be activated/focused by the first key, then listens to the keyboard and execute the statements you want to.
I'd implement dbus-handler, because a lot of plasma-stuff is available through it.

Or you could access the keyboard directly, reading the event-loop, and bypass the plasma-stuff.

Perhaps there is a developer reading this and able to help out with KGlobalAccel, as I am just playing with code in my spare time too