Copy to clipboard doesn't work on Wayland

[pintassilgo]

Flameshot Version

Flameshot v12.1.0 (001726a)

Installation Type

Compiled from source

Operating System type and version

Linux

Description

Almost no copy function work on Wayland, both text or image:

• Ctrl+C or button after creating a screenshot
• "Copy URL" or "Image to Clipboard" on "Upload image" dialog (after uploading image to Imgur)

This one works, might be used as a tip to understand what is wrong in source:

• "Copy URL" in "Upload History" dialog.

Interestingly, this one that works is the only one that doesn't produce any visual response like desktop notification saying "copied to clipboard". Others display a response saying it was copied, but it wasn't.

This is restricted to Wayland, I tried logging with X11 and it works.
But it isn't a limitation of Wayland because other apps obviously works fine to copy things to clipboard, be it image or text.

Tried with official openSUSE Tumbleweed package (12.0.0) and compiling latest source by myself, both are affected.

Steps to reproduce

As in description.

Screenshots or screen recordings

No response

System Information

Operating System: openSUSE Tumbleweed 20220725
KDE Plasma Version: 5.25.3
KDE Frameworks Version: 5.96.0
Qt Version: 5.15.5
Kernel Version: 5.18.11-1-default (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 1600 Six-Core Processor
Memory: 31,3 GiB of RAM
Graphics Processor: AMD Radeon RX 570 Series

[mmahmoudian]

Have you followed https://flameshot.org/docs/guide/wayland-help/#can-t-screen-anything-on-wayland-kde ? Basically have you installed xdg-desktop-portal-kde and xdg-desktop-portal?

[pintassilgo]

Yes, both were already installed.

Flameshot is working perfectly here, it's just that it can't copy things to clipboard.

I mentioned above in "Descrption" the only situation in which copying to clipboard is working, I guess it might help to investigate the root of the issue, looking into differences in source between that one and other "copy to clipboard" functions.

[haizaar]

Same happens on NixOS with KDE 5.23.3 and flameshot-12.1.0.
I've been using NixOS with KDE for several months and copying to keyboard using CTRL-C shortcut never worked.

[mmahmoudian]

I've been using NixOS with KDE for several months and copying to keyboard using CTRL-C shortcut never worked.

Just to make sure, you have checked that you are on Wayland, and in the Flameshot config Ctrl-c is bound to copy?

[haizaar]

Yes, 100% on wayland:

$ echo $XDG_SESSION_TYPE
wayland

Here is the snipped from Flameshot config screen:

[haizaar]

Other shortcuts like Ctrl+S work just fine.

When I press Ctrl-C it does say "Capture saved to clipboard" but it's not actually.

[pintassilgo]

Just to make sure, you have checked that you are on Wayland, and in the Flameshot config Ctrl-c is bound to copy?

Just to be clear, the issue is not related to key pressing, because (1) every other shortcut is working and (2) it's still a issue when you try to copy to clipboard by clicking screen buttons instead of using shortcuts (with one single working exception as described in first comment).

[haizaar]

It's working from the notification pop menu (as in below), I guess it's coming from Plasma at this stage, not flameshot.

I'd like to see if this helps once I manage to build it on Nix

[pintassilgo]

I'd like to see if this helps once I manage to build it on Nix

Thank you, that fixed part of the issue.

After building with cmake ../ -DUSE_WAYLAND_CLIPBOARD=true, copying image now works on Wayland, both by Ctrl+C and by clicking button.

But it still not perfect because copying URL string on upload still doesn't work. A desktop notification displays it was copied, but it wasn't. And if I click Copy URL button from "Upload image" dialog it also doesn't work:

But from "Upload History" dialog, as I said in initial comment clicking in Copy URL does work.

So now for this last remaining issue I believe it's something fixable in Flameshot code because there's already a place in which copy URL command works.