X-Git-Url: https://git.phdru.name/?p=xsetbg.git;a=blobdiff_plain;f=xsetbg.py;h=ac55e25f4271ae60c300ead1650c5287e88009a8;hp=472196690efecb018e87de06a9c802e232adcaef;hb=21192b521520392055185f65e5764800edb41f32;hpb=ec40913c91abd535e9197d608c0861a9701dcfb2 diff --git a/xsetbg.py b/xsetbg.py index 4721966..ac55e25 100755 --- a/xsetbg.py +++ b/xsetbg.py @@ -1,76 +1,54 @@ -#! /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 " -__copyright__ = "Copyright (C) 2000-2006 PhiloSoft Design" +__author__ = "Oleg Broytman " +__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 @@ -83,65 +61,82 @@ image_dirs = [os.path.join(xsetbg_dir, ] # 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\d+)y)?(?:(?P\d+)m)?(?:(?P\d+)d)?(?:T(?:(?P\d+)h)?(?:(?P\d+)m)?(?:(?P\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 = [] @@ -155,45 +150,23 @@ if not 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 \ @@ -201,60 +174,36 @@ def run(): 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()