Kwayland/kscreen: Flip/mirror screen impossible yet

[pking]

Hi everyone,

Since one of my screens is a teleprompter, that I essentially need for video conferences and presentations, I need the possibility to mirror a screen.

This has not been implemented in Wayland yet and I do not know, how much work has to be invested:

• Description of the issue (Arch-Forum) and
• waylandoutputdevice.cpp: “flipped transform is unsupported by kscreen”

I am excited to learn, how to collectively spend money in sponsored development. But - as a private person - my “possibilities are somehow limited”

Kind regards,
Peer

[Zamundaaa]

@pking

I do not know, how much work has to be invested

Shouldn’t be a lot, and doesn’t require any sponsoring. The reason it isn’t implemented yet is mostly that there wasn’t really any known use cases for it… I’ll look into it next week

[pking]

Great, thank you very much!

Yes, the use case isn’t that obvious. Due to Corona, there might be a few more people like me with a teleprompter/autocue.

[Zamundaaa]

It’s done: in Plasma 6 you’ll be able to make a screen be mirrored on the X axis with kscreen-doctor output.screenname.rotation.flipped (or mirrored on the X axis + rotated by some angle with flipped90, flipped180 or flipped270)