Leave native folder icon
May be leave original folder icon theme but with pictures preview(e.g. KDE-style)
Hello,
Did you mean something like this?

This will not be implemented in Cover Thumbnailer : It is too complicated to have a good-looking result in Nautilus for that.
There was already an old discussion about this on Launchpad → https://blueprints.launchpad.net/cover-thumbnailer/+spec/folder-icons-instead-of-cd-covers
:)
Yes, pity. But as a case not Nautilus, but consider mate-caja or cinnamon-nemo...
Caja is a fork of Nautilus 2.x and Nemo is a fork of Nautilus 3.x... So it would not be better... ^^'
Also, please note that Cover Thumbnailer is no more developed, it is in "maintenance" mode, so I will not work on new feature anymore, only bug fix, (more info in this blog post).
i am working on this:
https://gitlab.com/eMBee/cover-thumbnailer
yes, it doesn't look very good, but the key for me is to convey information, and the folder icon is critical for that. right now the folder icon is hardcoded, but ideally i'd like to somehow figure out which folder icon the filemanager actually uses, and use that instead.
looking further into getting the right theme. finding the themes folder icon is easy enough:
from gi.repository import Gtk
icon_theme = Gtk.IconTheme.get_default()
icon_info = icon_theme.lookup_icon("folder", 256, 0)
icon_file = icon_info.get_filename()
icon_pixbuf = icon_theme.load_icon("folder", 256, 0)
icon_image = Image.fromstring("RGBA",(icon_pixbuf.get_width(),icon_pixbuf.get_height()),icon_pixbuf.get_pixels())
but not all themes will look good, and the icons need some tailoring which may require custom code per theme. maybe it is better to optimize the default theme first.
then additional themes can be added if there is demand and contributions. and for unsupported themes the default would be used, or a custom theme selector could be added to the gui if someone is willing to contribute.
here are some examples of how it looks right now. i think it doesn't look to bad actually. perhaps it can be improved by removing the round corners to make the shadow less jarring.
