import asyncore, asynchat, socket
-import os, os.path, sys, time
+import os, os.path, random, sys, time
from optparse import OptionParser
import logging
from logging import debug, info, warning, error, critical
logging.basicConfig(format="%(levelname)s: %(message)s")
+try:
+ import cPickle as pickle
+except ImportError:
+ import pickle
try:
# Required libraries
import asyncsched
- from FileLists import *
import WallChanger
except ImportError, e:
critical("Missing libraries! Exiting...")
sys.exit(1)
+
+
+def filter_images(filenames):
+ extensions = ('.jpg', '.jpe', '.jpeg', '.png', '.gif', '.bmp')
+ for filename in filenames:
+ _, ext = os.path.splitext(filename)
+ if ext.lower() in extensions:
+ yield filename
+
+class BaseFileList(object):
+ """Base file list implementation"""
+ def scan_paths(self):
+ raise NotImplementedError()
+
+ def add_path(self, path):
+ raise NotImplementedError()
+
+ def store_cache(self, path):
+ pass
+
+ def load_cache(self, filename, rescanPaths = False):
+ pass
+
+ def get_next_image(self):
+ raise NotImplementedError()
+
+ def get_prev_image(self):
+ raise NotImplementedError()
+
+ def get_current_image(self):
+ raise NotImplementedError()
+
+ def is_empty(self):
+ return False
+
+
+class RandomFileList(BaseFileList):
+ def __init__(self):
+ self.list = []
+ self.paths = []
+ self.last_image = None
+
+ def scan_paths(self):
+ for path in self.paths:
+ for dirpath, dirsnames, filenames in os.walk(path):
+ for filename in filter_images(filenames):
+ self.list.append(os.path.join(dirpath, filename))
+
+ def add_path(self, path):
+ self.paths.append(path)
+ debug('Added path "%s" to the list' % path)
+
+ def get_next_image(self):
+ n = random.randint(0, len(self.list)-1)
+ self.last_image = self.list[n]
+ debug("Picked file '%s' from list" % self.last_image)
+ return self.last_image
+
+ def is_empty(self):
+ return len(self.list) > 0
+
+
+class AllRandomFileList(BaseFileList):
+ def __init__(self):
+ self.list = None
+ self.paths = []
+ self.imagePointer = 0
+
+ # Scan the input directory, and then randomize the file list
+ def scan_paths(self):
+ debug("Scanning paths")
+
+ self.list = []
+ for path in self.paths:
+ debug('Scanning "%s"' % path)
+ for dirpath, dirsnames, filenames in os.walk(path):
+ for filename in filter_images(filenames):
+ debug('Adding file "%s"' % filename)
+ self.list.append(os.path.join(dirpath, filename))
+
+ random.shuffle(self.list)
+
+ def add_path(self, path):
+ self.paths.append(path)
+ debug('Added path "%s" to the list' % path)
+
+ def store_cache(self, filename):
+ try:
+ fd = open(filename, 'wb')
+ pickle.dump(obj = self, file = fd, protocol = 2)
+ debug("Cache successfully stored")
+ except Exception, e:
+ warning("Exception while storing cache: '%s'" % e)
+
+ def load_cache(self, filename, rescanPaths = False):
+ debug('Attempting to load cache from "%s"' % filename)
+ self.paths.sort()
+ try:
+ fd = open(filename, 'rb')
+ tmp = pickle.load(fd)
+ if self.paths == tmp.paths:
+ debug("Path lists match, copying properties")
+ # Overwrite this object with the other
+ for attr in ('list', 'imagePointer'):
+ setattr(self, attr, getattr(tmp, attr))
+ else:
+ debug("Ignoring cache, path lists do not match")
+ except Exception, e:
+ warning("Exception while loading cache: '%s'" % e)
+
+ def get_current_image(self):
+ return self.list[self.imagePointer]
+
+ def __inc_in_range(self, n, amount = 1, rangeMax = None, rangeMin = 0):
+ if rangeMax == None: rangeMax = len(self.list)
+ assert rangeMax > 0
+ return (n + amount) % rangeMax
+
+ def get_next_image(self):
+ self.imagePointer = self.__inc_in_range(self.imagePointer)
+ imageName = self.list[self.imagePointer]
+ debug("Picked file '%s' (pointer=%d) from list" % (imageName, self.imagePointer))
+ return imageName
+
+ def get_prev_image(self):
+ self.imagePointer = self.__inc_in_range(self.imagePointer, amount=-1)
+ imageName = self.list[self.imagePointer]
+ debug("Picked file '%s' (pointer=%d) from list" % (imageName, self.imagePointer))
+ return imageName
+
+ def is_empty(self):
+ return self.list
+
+class FolderRandomFileList(BaseFileList):
+ """A file list that will pick a file randomly within a directory. Each
+ directory has the same chance of being chosen."""
+ def __init__(self):
+ self.directories = {}
+
+ def add_path(self, path):
+ debug('Added path "%s" to the list' % path)
+ for dirpath, dirs, filenames in os.walk(path):
+ debug('Scanning "%s" for images' % dirpath)
+ if self.directories.has_key(dirpath):
+ continue
+ filenames = filter_images(filenames)
+ if len(filenames):
+ self.directories[dirpath] = filenames
+ debug('Adding "%s" to "%s"' % (filenames, dirpath))
+ else:
+ debug("No images found in '%s'" % dirpath)
+
+ def get_next_image(self):
+ directory = random.choice(self.directories.keys())
+ debug('directory: "%s"' % directory)
+ filename = random.choice(self.directories[directory])
+ debug('filename: "%s"' % filename)
+ return os.path.join(directory, filename)
+
+ def is_empty(self):
+ return len(self.directories.values())
+
+
class Cycler(object):
def __init__(self, options, paths):
- filelist = self.find_files(options, paths)
- if not filelist.hasImages():
+ self.filelist = self.find_files(options, paths)
+ if not self.filelist.is_empty():
error("No images were found. Exiting...")
sys.exit(1)
- debug("Initilizing RandomBG")
- self.randombg = WallChanger.RandomBG(filelist, options.background_colour, options.permanent)
+ debug("Initialising RandomBG")
+ self.randombg = WallChanger.RandomBG(options.background_colour, options.permanent)
self.cycle_time = options.cycle_time
self.task = None
filelist = RandomFileList()
for path in paths:
- filelist.doAddPath(path)
+ filelist.add_path(path)
- if filelist.attemptCacheLoad(options.history_filename):
+ if filelist.load_cache(options.history_filename):
debug("Loaded cache successfully")
else:
debug("Could not load cache")
- filelist.doScanPaths()
+ filelist.scan_paths()
return filelist
def cmd_reset(self):
def next():
- self.randombg.cycleNext()
+ image = self.filelist.get_next_image()
+ self.randombg.setImage(image)
self.task = None
self.cmd_reset()
debug("Reset timer for %s seconds" % self.cycle_time)
def cmd_reload(self):
- self.randombg.cycleReload()
+ image = self.filelist.get_current_image()
+ self.randombg.setImage(image)
self.cmd_reset()
def cmd_next(self):
- self.randombg.cycleNext()
+ image = self.filelist.get_next_image()
+ self.randombg.setImage(image)
self.cmd_reset()
def cmd_prev(self):
- self.randombg.cyclePrev()
+ image = self.filelist.get_prev_image()
+ self.randombg.setImage(image)
self.cmd_reset()
def cmd_rescan(self):
- self.randombg.filelist.doScanPaths()
+ self.filelist.scan_paths()
self.cmd_next()
def cmd_pause(self):
def do_server(options, paths):
try:
- cycler = Cycler(options, paths)
- listener = Listener(options.socket_filename, cycler)
- asyncsched.loop()
- except KeyboardInterrupt:
- print
+ try:
+ cycler = Cycler(options, paths)
+ listener = Listener(options.socket_filename, cycler)
+ asyncsched.loop()
+ except KeyboardInterrupt:
+ print
finally:
# Make sure that the socket is cleaned up
try: