Re: dired-mouse-drag-files

[Po Lu]

[You forgot to copy in the list, I did that for you this time.]

Justus-dev@Piater.name writes:

> What about Wayland?
>
> I don't think this should be too hard to implement (famous last words).
> Perhaps I'll give it a shot myself. Any advice?
>
> Best,
> Justus

It shouldn't be too hard, thanks!  First, rewrite pgtkselect.c to use
the low-level GDK selections API (the code translates very neatly from
X), since the GTK clipboard API is not very suitable for Emacs
drag-and-drop.  The file that needs work is pgtkselect.c.

Then, implement `x-begin-drag' using the GDK drag-and-drop system.  I
suggest running a nested event loop until the drop completes.

Most of the low level functions there are not much higher level than the
functions `x_dnd_get_target_window' and `x_set_dnd_targets' on X.

This documentation should be fairly helpful:

https://developer-old.gnome.org/gdk3/stable/gdk3-Drag-and-Drop.html
https://developer-old.gnome.org/gdk3/stable/gdk3-Selections.html