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from gi.repository import Nautilus, GObject, Gio
from typing import List
SUPPORTED_FORMATS = "image/jpeg", "image/png"
BACKGROUND_SCHEMA = "org.gnome.desktop.background"
BACKGROUND_KEY = "picture-uri"
class BackgroundImageExtension(GObject.GObject, Nautilus.MenuProvider):
def __init__(self):
super().__init__()
self.bgsettings = Gio.Settings.new(BACKGROUND_SCHEMA)
def menu_activate_cb(
self,
menu: Nautilus.MenuItem,
file: Nautilus.FileInfo,
) -> None:
if file.is_gone():
return
self.bgsettings[BACKGROUND_KEY] = file.get_uri()
def get_file_items(
self,
files: List[Nautilus.FileInfo],
) -> List[Nautilus.MenuItem]:
if len(files) != 1:
return []
file = files[0]
# We're only going to put ourselves on images context menus
if not file.get_mime_type() in SUPPORTED_FORMATS:
return []
# Gnome can only handle file:
# In the future we might want to copy the file locally
if file.get_uri_scheme() != "file":
return []
item = Nautilus.MenuItem(
name="Nautilus::set_background_image",
label="Use as background image",
tip="Set the current image as a background image",
)
item.connect("activate", self.menu_activate_cb, file)
return [
item,
]
# Current versions of Nautilus will throw a warning if get_background_items
# isn't present
def get_background_items(
self,
current_folder: Nautilus.FileInfo,
) -> List[Nautilus.MenuItem]:
return []
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