cannot support Multi-Activities windows

[Louis-J]

if a window shows in more than one kwin-activities, and the window numbers are different between the same virtual desktop across activities.

reproduce: window a: shows in activity 1 and virtual desktop 1 window b: shows in activity 1, 2 and virtual desktop 1

then the window b can only have half-screen size in activity2.

[lingtjien]

Let's first discuss what the intended behavior is that you expect.

As far as I can see one window can not be tiled correctly in two different activities, so I believe if a window is active in more than 1 activity it should float (which I think that is how I implemented it but maybe that's broken). Let's start with an example, where A (a terminal for example) and B (a web browser) are two different applications and you decide that you want the web browser to be active in both activity 1 and 2.

Activity 1

A B

Activity 2

B

I think, B should fully occupy the whole virtual desktop (taking into account gaps) for activity 2, but only take up the right half in activity 1. So I don't think there is a correct geometry to apply here to B.

What behavior were you expecting?

[lingtjien]

due to plasma 6 release, and big changes to the API. I will close all old inactive tickets, if you still encounter problems then feel free to create a new ticket