Suppose someone has an extra touchscreen display that they add to their apart from their other monitors.
The user wants to run some touchscreen applications on it (something like a notifications display, perhaps), but does not want the mouse cursor to go there, even when they interact using the touchscreen on that monitor.
In this case, they can create a separate application to be a widget on that screen and set a window rule to keep it on that other monitor, or perhaps move a Plasma widget onto it.
In the System Settings → Display Configuration, it should look like a display that is not connected to any of the others.
This will require 2 things from what I can think of:
- Separating a display and making it inaccessible to the primary group
- Adding multiple focus contexts (1 per group, perhaps)
The result of (2) should also end up bridging to Multi-Pointer or Multi-Cursor to use with Wayland?