Add a search provider
This refactors the code a bit to allow having a search provider easily.
Sadly, we can't show the nonsystem icons (the icon dev kit ones) as themed icons, so they are not recolored.
Per the GNOME Shell Provider API v2: the results could contain an icon https://gitlab.gnome.org/GNOME/gnome-shell/blob/master/js/ui/remoteSearch.js#L219-228. As those icons are not available in the user's system, we can't load them with an icon name.
let gfile = gio::File::new_for_path(icon_path);
let (gbytes, _) = gfile.load_bytes(gio::NONE_CANCELLABLE).expect("Failed to read icon bytes");
let gicon = gio::BytesIcon::new(&gbytes);
let variant = gicon.serialize().unwrap();
let gbytes = unsafe { // GVariant is not that supported with the current gtk-rs :/
let bytes_variant = glib_sys::g_variant_get_child_value(variant.to_glib_none().0, 1);
let bytes: glib::Bytes = from_glib_full(glib_sys::g_variant_get_data_as_bytes(bytes_variant));
bytes
};
let bytes: Vec<u8> = gbytes.to_vec();
hashmap.insert("icon".to_string(), arg::Variant(Box::new(("bytes".to_string(), arg::Variant(Box::new(bytes))))));
Which gives such results
Closes #6 (closed)