Use 'feh' rather than nitrogen for wallpaper setting

#!/usr/bin/env python

# A wrapper around nitrogen that repeats a set command at randomly picked 

# intervals

#!/bin/sh

# At a random interval between MIN_DELAY_MINS (default: 45 minutes) and 

# MAX_DELAY_MINS (default: 120 minutes) minutes choose an image from 

# IMAGE_DIRECTORY and set it as the desktop wallpaper.

#

# If python is available execs the python version wallpaper.py to avoid forking 

# several additional processes per iteration other than the setter.

import os

import sys

import time

import random

import subprocess

set -eu

: ${MIN_DELAY_MINS:=45} ${MAX_DELAY_MINS:=120}

: ${IMAGES_DIRECTORY:=${HOME}/.backgrounds}

MIN_DELAY_MINS = 45

MAX_DELAY_MINS = 120

. ~/.shell/funcs

if [ $# -gt 0 ]; then

	echo >&2 "Using '$*' as setter command"

elif has feh; then

	set feh --no-fehbg --no-xinerama --bg-fill

else

	echo >&2 "No setter command found"

	exit 2

fi

while 1:

	subprocess.call([

		'nitrogen', '--set-zoom-fill', '--random',

		'{HOME}/.backgrounds'.format(**os.environ),

	])

	time.sleep(random.randint(MIN_DELAY_MINS * 60, MAX_DELAY_MINS * 60))

if has python; then

	export MIN_DELAY_MINS

	export MAX_DELAY_MINS

	export IMAGES_DIRECTORY

	exec python ~/.shell/bin/wallpaper.py "$@"

fi

if has find; then

	list() { find "${IMAGES_DIRECTORY}" -type f; }

else

	list() { ls -r1 --quoting-style=literal "${IMAGES_DIRECTORY}"; }

fi

if has shuf; then

	choose() { shuf -n1; }

elif has sort && has head; then

	choose() { sort -R | head -n1; }

else

	echo >&2 "No selection command found"

	exit 2

fi

min_delay=$((MIN_DELAY_MINS * 60))

max_delay=$((MAX_DELAY_MINS * 60))

dif_delay=$((max_delay - min_delay))

while true; do

	"$@" "`list|choose`"

	sleep `seq $min_delay $max_delay | choose`

done

#!/usr/bin/env python

# At a random interval between MIN_DELAY_MINS (default: 45 minutes) and 

# MAX_DELAY_MINS (default: 120 minutes) minutes choose an image from 

# IMAGE_DIRECTORY and set it as the desktop wallpaper.

import os

import sys

import time

import random

import subprocess

from os import path

MIN_DELAY_SECS = int(os.environ.get('MIN_DELAY_MINS', 45)) * 60

MAX_DELAY_SECS = int(os.environ.get('MAX_DELAY_MINS', 120)) * 60

IMAGES_DIRECTORY = path.expanduser(

		os.environ.get('IMAGES_DIRECTORY', '~/.backgrounds'))

def all_files():

	for dirpath, _, filenames in os.walk(IMAGES_DIRECTORY):

		for filename in filenames:

			yield path.join(dirpath, filename)

if len(sys.argv) > 0:

	cmd = sys.argv[1:] + [None]

else:

	cmd = ['feh', '--no-fehbg', '--no-xinerama', '--bg-fill', None]

while 1:

	cmd[-1] = random.choice(list(all_files()))

	subprocess.call(cmd)

	time.sleep(random.randint(MIN_DELAY_SECS, MAX_DELAY_SECS))