-#! /usr/local/bin/python -O
+#! /usr/bin/env python
"""Set a random background image (XWin)
Select a random image from a (list of) directory(s)
and set it as the desktop wallpaper (display it in the root window)
-using xli or xsetbg programs.
+using xli program.
"""
-__version__ = "$Revision$"[11:-2]
-__revision__ = "$Id$"[5:-2]
-__date__ = "$Date$"[7:-2]
-
-__author__ = "Oleg BroytMann <phd@phd.pp.ru>"
-__copyright__ = "Copyright (C) 2000-2006 PhiloSoft Design"
+__author__ = "Oleg Broytman <phd@phdru.name>"
+__copyright__ = "Copyright (C) 2000-2014 PhiloSoft Design"
__license__ = "GNU GPL"
+__all__ = ['host', 'port', 'change']
-import sys, os
+import anydbm
+from fcntl import flock, LOCK_EX, LOCK_UN, LOCK_NB
+from datetime import timedelta
+import os
+import random
+import re
+import shelve
+import subprocess
+import sys
+from time import time
+
+from xsetbg_conf import xsetbg_dir, xsetbg_conf
+from xsetbg_db import xsetbg_db
-def usage():
- sys.stderr.write("%s version %s\n" % (sys.argv[0], __version__))
- sys.stderr.write("Usage: %s [force]\n" % sys.argv[0])
- sys.exit(0)
def error(error_str, error_code=1):
sys.stderr.write("%s: Error: %s\n" % (sys.argv[0], error_str))
sys.exit(error_code)
-xwininfo = os.popen("xwininfo -root", 'r')
-xwininfo_lines = xwininfo.read()
-rc = xwininfo.close()
-if rc:
- error("calling xwininfo", rc)
-
-screen_width = None
-screen_height = None
-for line in xwininfo_lines.split('\n'):
- line = line.strip()
- if line.startswith("Width: "):
- screen_width = int(line[len("Width: "):])
- elif line.startswith("Height: "):
- screen_height = int(line[len("Height: "):])
-
-if not screen_width or not screen_height:
- error("parsing xwininfo output")
-
-
-from ConfigParser import SafeConfigParser
-
-xsetbg_dir = os.path.join(os.environ["HOME"], "lib", "xsetbg")
-os.chdir(xsetbg_dir)
-
-config = SafeConfigParser()
-config.read("xsetbg.conf")
-
-if config.has_option("images", "directory") or \
- config.has_option("images", "directory0") or \
- config.has_option("images", "directory1"):
+if xsetbg_conf.has_option("images", "directory") or \
+ xsetbg_conf.has_option("images", "directory0") or \
+ xsetbg_conf.has_option("images", "directory1"):
image_dirs = []
- if config.has_option("images", "directory"):
- image_dirs.append(config.get("images", "directory"))
- if config.has_option("images", "directory0"):
- image_dirs.append(config.get("images", "directory0"))
- if config.has_option("images", "directory1"):
- image_dirs.append(config.get("images", "directory1"))
+ if xsetbg_conf.has_option("images", "directory"):
+ image_dirs.append(xsetbg_conf.get("images", "directory"))
+ if xsetbg_conf.has_option("images", "directory0"):
+ image_dirs.append(xsetbg_conf.get("images", "directory0"))
+ if xsetbg_conf.has_option("images", "directory1"):
+ image_dirs.append(xsetbg_conf.get("images", "directory1"))
i = 2
while True:
option = "directory%d" % i
- if config.has_option("images", option):
- image_dirs.append(config.get("images", option))
+ if xsetbg_conf.has_option("images", option):
+ image_dirs.append(xsetbg_conf.get("images", option))
i += 1
else:
break
]
# minimum time in seconds between background image changes
-if config.has_option("xsetbg", "min_pause"):
- min_pause = config.getint("xsetbg", "min_pause")
+if xsetbg_conf.has_option("xsetbg", "min_pause"):
+ min_pause = xsetbg_conf.getint("xsetbg", "min_pause")
else:
min_pause = 60
-borders = config.get("xsetbg", "borders").split(',')
-if config.has_option("xsetbg", "borders"):
- borders = [border.strip() for border in config.get("xsetbg", "borders").split(',')]
+borders = xsetbg_conf.get("xsetbg", "borders").split(',')
+if xsetbg_conf.has_option("xsetbg", "borders"):
+ borders = [border.strip() for border in xsetbg_conf.get("xsetbg", "borders").split(',')]
else:
borders = ["darkcyan", "steelblue", "midnightblue"]
# minimum time in seconds between occurences of the same image
-if config.has_option("xsetbg", "min_delay"):
- min_delay = config.getint("xsetbg", "min_delay")
+if xsetbg_conf.has_option("xsetbg", "min_delay"):
+ min_delay = xsetbg_conf.get("xsetbg", "min_delay")
+
+ # Borrowed from http://stackoverflow.com/a/2765366
+ td_re = re.compile('(?:(?P<years>\d+)y)?(?:(?P<months>\d+)m)?(?:(?P<days>\d+)d)?(?:T(?:(?P<hours>\d+)h)?(?:(?P<minutes>\d+)m)?(?:(?P<seconds>\d+)s)?)?')
+ td_dict = td_re.match(min_delay).groupdict(0)
+ delta = timedelta(days=int(td_dict['days']) + (int(td_dict['months']) * 30) + (int(td_dict['years']) * 365),
+ hours=int(td_dict['hours']),
+ minutes=int(td_dict['minutes']),
+ seconds=int(td_dict['seconds']))
+
+ if delta:
+ min_delay = delta.days * 24*3600 + delta.seconds
+ else:
+ min_delay = int(min_delay)
+
else:
min_delay = 3600*24 # 24 hours
-del config
+# httpd settings
+if xsetbg_conf.has_option("httpd", "host"):
+ host = xsetbg_conf.get("httpd", "host")
+else:
+ host = 'localhost'
+if xsetbg_conf.has_option("httpd", "port"):
+ port = xsetbg_conf.getint("httpd", "port")
+else:
+ error("Config must specify a port to listen. Abort.")
-os.umask(0066) # octal; -rw-------; make the global persistent dictionary
- # readable only by the user
-global_db_name = "xsetbg.db"
+# DB keys
+timestamp_key = "timestamp"
+filename_key = "filename"
+old_filename_key = "old_filename"
-import random
-import anydbm, shelve
-from time import time
-from fcntl import flock, LOCK_EX, LOCK_UN, LOCK_NB
-# Import pickle and all anydbm/shelve internal machinery, so that
-# when ReadyExec forks they will be ready.
-# Also create the database if it is not exists yet.
+# Create the database if it is not exists yet.
+
+os.umask(0066) # octal; -rw-------; make the global persistent dictionary
+ # readable only by the user
try:
- global_db = shelve.open(global_db_name, flag='c')
+ xsetbg_db = shelve.open(xsetbg_db_path, flag='c')
except anydbm.error, msg:
if str(msg) == "db type could not be determined":
- os.remove(global_db_name)
- global_db = shelve.open(global_db_name, flag='c')
+ os.remove(xsetbg_db_path)
+ xsetbg_db = shelve.open(xsetbg_db_path, flag='c')
# Remove old filenames
old_time = time() - min_delay
-to_delete = []
-for key in global_db.keys():
- if key.startswith('/') and global_db[key] < old_time:
+to_delete = [timestamp_key]
+for key in xsetbg_db.keys():
+ if key.startswith('/') and xsetbg_db[key] < old_time:
to_delete.append(key)
for key in to_delete:
- del global_db[key]
+ try:
+ del xsetbg_db[key]
+ except KeyError:
+ pass
-global_db.close() # Close DB in the parent process
-
-
-# DB keys
-timestamp_key = "timestamp"
-filename_key = "filename"
-old_filename_key = "old_filename"
+xsetbg_db.close() # Close DB in the parent process
images = []
error("No images found. Abort.")
-try:
- from PIL import Image
- use_PIL = True
-except ImportError:
- use_PIL = False
-
-
-def run():
- if len(sys.argv) not in (1, 2):
- usage()
-
- force = False
- if len(sys.argv) == 2:
- if sys.argv[1] == "force":
- force = True
- else:
- usage()
-
+def change(force=False):
# Use the program's file as the lock file:
# lock it to prevent two processes run in parallel.
lock_file = open("xsetbg.py", 'r')
try:
- flock(lock_file , LOCK_EX|LOCK_NB)
+ flock(lock_file, LOCK_EX|LOCK_NB)
except IOError: # already locked
lock_file.close()
return
- global_db = None
+ xsetbg_db = None
try:
- # Re-seed the RNG; this is neccessary because ReadyExecd forks
- # and RNG in a child process got the same seed from the parent
- # after every fork.
- random.seed()
-
# Reopen the global persistent dictionary
- global_db = shelve.open(global_db_name, 'w')
+ xsetbg_db = shelve.open(xsetbg_db_path, 'w')
- timestamp = global_db.get(timestamp_key)
+ timestamp = xsetbg_db.get(timestamp_key)
current_time = time()
if not force and timestamp is not None and \
return
# Save current time
- global_db[timestamp_key] = current_time
+ xsetbg_db[timestamp_key] = current_time
# Select a random image and check if we've seen it recently;
# loop until we can find a new image (never seen before) or old enough.
for i in xrange(len(images)): # ensure the loop is not infinite
image_name = random.choice(images)
- if global_db.has_key(image_name):
- image_time = global_db[image_name]
+ if xsetbg_db.has_key(image_name):
+ image_time = xsetbg_db[image_name]
if current_time - image_time > min_delay:
break
else:
break
- global_db[image_name] = current_time
-
- border = random.choice(borders)
- root, ext = os.path.splitext(image_name)
+ xsetbg_db[image_name] = current_time
# Save filename
- if global_db.has_key(filename_key):
- global_db[old_filename_key] = global_db[filename_key]
- global_db[filename_key] = image_name
-
- placement_options = []
- if use_PIL:
- image = Image.open(image_name, 'r')
- im_w, im_h = image.size
- del image
- if (im_w > screen_width) or (im_h > screen_height):
- zoom = min(screen_width*100//im_w, screen_height*100//im_h)
- if zoom > 0: placement_options = ["-zoom", str(zoom)]
+ if xsetbg_db.has_key(filename_key):
+ xsetbg_db[old_filename_key] = xsetbg_db[filename_key]
+ xsetbg_db[filename_key] = image_name
+
+ program_options = ["xli", "-onroot", "-quiet"] + \
+ ["-center", "-border", random.choice(borders), "-zoom", "auto",
+ image_name]
+
+ rc = subprocess.call(program_options)
+ if rc:
+ error("cannot execute xli!")
finally:
# Unlock and close the lock file
- flock(lock_file , LOCK_UN)
+ flock(lock_file, LOCK_UN)
lock_file.close()
# Flush and close the global persistent dictionary
- if global_db: global_db.close()
-
-
- if ext.lower() in (".bmp", ".png"):
- # xsetbg does not recognize BMP files.
- # PNG files have gamma settings, and xli can adapt it to the display gamma;
- # xloadimage/xview/xsetbg display them with wrong gamma.
- program_options = ["xli", "xli", "-onroot", "-quiet"] + placement_options + \
- ["-center", "-border", border, image_name]
- os.execlp(*program_options)
- error("cannot execute xli!")
- else:
- # ...but xli failed to load many image types, use xsetbg for them
- program_options = ["xsetbg", "xsetbg"] + placement_options + \
- ["-center", "-border", border, image_name]
- os.execlp(*program_options)
- error("cannot execute xsetbg!")
-
-
-if __name__ == "__main__":
- run()
+ if xsetbg_db: xsetbg_db.close()
projects / xsetbg.git / blobdiff