Whiteboard: unintended copy functionality

[maymage]

Hi all,

I'm using a One by Wacom graphical tablet with a two button pen on a standard GNOME installation.

The following situation as appearing in the below video is reproducible as follows:

• Copy some text to your clipboard Ctrl+C
• Open Jitsi's whiteboard
• Select the pen drawer and start to draw
• During drawing, press the lower button and release it
• End the drawing by lifting the pen

This sequence of actions inserts the before copied text. It's been happening to me
many, many times involuntarily.

Bildschirmaufzeichnung.vom.2023-01-09.13-39-14.webm

If Jitsi wishes to support pen buttons, it should in my opinion probably point at most one button to the eraser,
but due to a lack of configurability and the many existing, different drawing tablets, that should be it for the sake of
usability.

[saghul]

Can you reproduce this Jen using Excalidraw directly at excalidraw.com ?

[maymage]

No, this is not reproducible on Excalidraw, see the video below, where I perform the same actions as above.

Bildschirmaufzeichnung.vom.2023-01-10.10-36-07.webm

[saghul]

Hum, that is really odd. We haven't added any extra input handling for pen buttons, let alone make one act as paste. Not sure where this comes from TBH.

[maymage]

Okay.. I was suspicious, because I remembered some c&p logics discussions from a wayland channel. Anyway..

• Not reproducible on Excalidraw + Firefox on Wayland or Xorg
• Not reproducible on Excalidraw + Chromium on Xorg
• Reproducible on Excalidraw + Chromium on Wayland

All apps run unmodified from Flathub.

[saghul]

In that case there is nothing we can do.

[maymage]

Apart from bringing the issue up upstream, I suppose.

Excalidraw, Electron, Chromium, Gnome? What do you think?

[saghul]

Great question :-)

What happens on Firefox on Wayland? If it works I'd say Chrome, otherwise it could be GNOME, you could also try to reproduce it with a different desktop environment.

I'm closing this, but feel free to comment on your further finds for reference.

[maymage]

Filed against Chromium

https://bugs.chromium.org/p/chromium/issues/detail?id=1407093