Adding X11 support

[victor-oliveira1]

Hi there!

This is my first contribution on Github. Please forgive me if it's wrong.
I've added X11 support on clipboard pasting.

Thanks!

[d99kris]

Hi @victor-oliveira1 - thanks for contributing.
But I'm wondering what problem/bug the patch is fixing?

Clipboard copy/paste (incl. image) should already work on macOS and Linux X11 - enabled by library clip. It's only for Wayland that nchat has added special code (because clip does not support it).

I tested here now (Ubuntu on arm64), placing an image in the clipboard:

xclip -selection clipboard -t image/png -i doc/screenshot-nchat-dracula.png

and then pasting it in nchat (alt/opt-v) and the image can be sent.

[victor-oliveira1]

Hi there!

I'm using X11 with openbox, and if i copy an image from web browser for example and paste into nchat with alt/opt-v, it simply does nothing.
With this fix, this works normally, i don't know why the current implementation doesn't works
I've tested on: Debian Testing (forky) + KDE, Debian Stable (trixie) + openbox
I'm going to debug and see why the clip lib it's not working here :)

Thanks!

[victor-oliveira1]

Hi there!

I've made some tests and the clip lib (https://github.com/dacap/clip) it's not working here:

And with the build with the custom code provided:

[d99kris]

Thanks - I'm travelling the next week, but I'll get back to this.

[fulalas]

I'm on Xfce 4.20 running X11 and no patch is needed to paste/send an image from the clipboard.