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"""Set the wallpaper."""
import ctypes
import logging
import os
import re
import shutil
import subprocess
import urllib.parse
from .settings import HOME, OS, CACHE_DIR
from . import util
def get_desktop_env():
"""Identify the current running desktop environment."""
desktop = os.environ.get("XDG_CURRENT_DESKTOP")
if desktop:
return desktop
desktop = os.environ.get("DESKTOP_SESSION")
if desktop:
return desktop
desktop = os.environ.get("GNOME_DESKTOP_SESSION_ID")
if desktop:
return "GNOME"
desktop = os.environ.get("MATE_DESKTOP_SESSION_ID")
if desktop:
return "MATE"
desktop = os.environ.get("SWAYSOCK")
if desktop:
return "SWAY"
desktop = os.environ.get("DESKTOP_STARTUP_ID")
if desktop and "awesome" in desktop:
return "AWESOME"
return None
def xfconf(img):
"""Call xfconf to set the wallpaper on XFCE."""
xfconf_re = re.compile(
r"^/backdrop/screen\d/monitor(?:0|\w*)/"
r"(?:(?:image-path|last-image)|workspace\d/last-image)$",
flags=re.M
)
xfconf_data = subprocess.check_output(
["xfconf-query", "--channel", "xfce4-desktop", "--list"],
stderr=subprocess.DEVNULL
).decode('utf8')
paths = xfconf_re.findall(xfconf_data)
for path in paths:
util.disown(["xfconf-query", "--channel", "xfce4-desktop",
"--property", path, "--set", img])
def set_wm_wallpaper(img):
"""Set the wallpaper for non desktop environments."""
if shutil.which("feh"):
util.disown(["feh", "--bg-fill", img])
elif shutil.which("xwallpaper"):
util.disown(["xwallpaper", "--zoom", img])
elif shutil.which("hsetroot"):
util.disown(["hsetroot", "-fill", img])
elif shutil.which("nitrogen"):
util.disown(["nitrogen", "--set-zoom-fill", img])
elif shutil.which("bgs"):
util.disown(["bgs", "-z", img])
elif shutil.which("hsetroot"):
util.disown(["hsetroot", "-fill", img])
elif shutil.which("habak"):
util.disown(["habak", "-mS", img])
elif shutil.which("display"):
util.disown(["display", "-backdrop", "-window", "root", img])
else:
logging.error("No wallpaper setter found.")
return
def set_desktop_wallpaper(desktop, img):
"""Set the wallpaper for the desktop environment."""
desktop = str(desktop).lower()
if "xfce" in desktop or "xubuntu" in desktop:
xfconf(img)
elif "muffin" in desktop or "cinnamon" in desktop:
util.disown(["gsettings", "set",
"org.cinnamon.desktop.background",
"picture-uri", "file://" + urllib.parse.quote(img)])
elif "gnome" in desktop or "unity" in desktop:
util.disown(["gsettings", "set",
"org.gnome.desktop.background",
"picture-uri", "file://" + urllib.parse.quote(img)])
elif "mate" in desktop:
util.disown(["gsettings", "set", "org.mate.background",
"picture-filename", img])
elif "sway" in desktop:
util.disown(["swaymsg", "output", "*", "bg", img, "fill"])
elif "awesome" in desktop:
util.disown(["awesome-client",
"require('gears').wallpaper.maximized('{img}')"
.format(**locals())])
elif "kde" in desktop:
string = """
var allDesktops = desktops();for (i=0;i<allDesktops.length;i++){
d = allDesktops[i];d.wallpaperPlugin = "org.kde.image";
d.currentConfigGroup = Array("Wallpaper", "org.kde.image",
"General");d.writeConfig("Image", "%s")};
"""
util.disown(["qdbus", "org.kde.plasmashell", "/PlasmaShell",
"org.kde.PlasmaShell.evaluateScript", string % img])
else:
set_wm_wallpaper(img)
def set_mac_wallpaper(img):
"""Set the wallpaper on macOS."""
db_file = "Library/Application Support/Dock/desktoppicture.db"
db_path = os.path.join(HOME, db_file)
# Put the image path in the database
sql = "insert into data values(\"%s\"); " % img
subprocess.call(["sqlite3", db_path, sql])
# Get the index of the new entry
sql = "select max(rowid) from data;"
new_entry = subprocess.check_output(["sqlite3", db_path, sql])
new_entry = new_entry.decode('utf8').strip('\n')
# Get all picture ids (monitor/space pairs)
get_pics_cmd = ['sqlite3', db_path, "select rowid from pictures;"]
pictures = subprocess.check_output(get_pics_cmd)
pictures = pictures.decode('utf8').split('\n')
# Clear all existing preferences
sql += "delete from preferences; "
# Write all pictures to the new image
for pic in pictures:
if pic:
sql += 'insert into preferences (key, data_id, picture_id) '
sql += 'values(1, %s, %s); ' % (new_entry, pic)
subprocess.call(["sqlite3", db_path, sql])
# Kill the dock to fix issues with cached wallpapers.
# macOS caches wallpapers and if a wallpaper is set that shares
# the filename with a cached wallpaper, the cached wallpaper is
# used instead.
subprocess.call(["killall", "Dock"])
def set_win_wallpaper(img):
"""Set the wallpaper on Windows."""
# There's a different command depending on the architecture
# of Windows. We check the PROGRAMFILES envar since using
# platform is unreliable.
if "x86" in os.environ["PROGRAMFILES"]:
ctypes.windll.user32.SystemParametersInfoW(20, 0, img, 3)
else:
ctypes.windll.user32.SystemParametersInfoA(20, 0, img, 3)
def change(img):
"""Set the wallpaper."""
if not os.path.isfile(img):
return
desktop = get_desktop_env()
if OS == "Darwin":
set_mac_wallpaper(img)
elif OS == "Windows":
set_win_wallpaper(img)
else:
set_desktop_wallpaper(desktop, img)
logging.info("Set the new wallpaper.")
def get(cache_dir=CACHE_DIR):
"""Get the current wallpaper."""
current_wall = os.path.join(cache_dir, "wal")
if os.path.isfile(current_wall):
return util.read_file(current_wall)[0]
return "None"
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