--- /dev/null
+#!/usr/bin/env python
+# Copyright 2008 Greg Darke <greg@tsukasa.net.au>
+# Copyright 2008 James Bunton <jamesbunton@fastmail.fm>
+# Licensed for distribution under the GPL version 2, check COPYING for details
+# This is a cross platform/cross window manager way to change your wallpaper
+
+import commands, sys, os, os.path, subprocess, time
+from logging import debug, info, warning
+
+__all__ = ("init", "set_image")
+
+
+changers = []
+
+def set_image(filename):
+ info("Setting image: %s" % filename)
+ for changer in changers:
+ if not changer.set_image(filename):
+ warning("Failed to set background: wallchanger.set_image(%s), changer=%s" % (filename, changer))
+
+def init(*args, **kwargs):
+ """Desktop Changer factory"""
+
+ debug("Testing for OSX (NonX11)")
+ if commands.getstatusoutput("ps ax -o command -c|grep -q WindowServer")[0] == 0:
+ changers.append(OSXChanger(*args, **kwargs))
+
+ if 'DISPLAY' not in os.environ or os.environ['DISPLAY'].startswith('/tmp/launch'):
+ # X11 is not running
+ return
+ else:
+ if os.uname()[0] == 'Darwin':
+ # Try to detect if the X11 server is running on OSX
+ if commands.getstatusoutput("ps ax -o command|grep -q '/.*X11 .* %s'" % os.environ['DISPLAY'])[0] != 0:
+ # X11 is not running for this display
+ return
+
+ debug("Testing for KDE")
+ if commands.getstatusoutput("xwininfo -name 'KDE Desktop'")[0] == 0:
+ changers.append(KDEChanger(*args, **kwargs))
+
+ debug("Testing for Gnome")
+ if commands.getstatusoutput("xwininfo -name 'gnome-session'")[0] == 0:
+ changers.append(GnomeChanger(*args, **kwargs))
+
+ debug("Testing for WMaker")
+ if commands.getstatusoutput("xlsclients | grep -qi wmaker")[0] == 0:
+ changers.append(WMakerChanger(*args, **kwargs))
+
+ if len(changers) == 0:
+ raise Exception("Unknown window manager")
+
+
+class BaseChanger(object):
+ name = "undefined"
+ def __init__(self, background_color='black', permanent=False, convert=False):
+ info('Determined the window manager is "%s"' % self.name)
+ self.background_color = background_color
+ self.permanent = permanent
+ self.convert = convert
+
+ def set_image(self, filename):
+ raise NotImplementedError()
+
+class WMakerChanger(BaseChanger):
+ name = "WindowMaker"
+ _ConvertedWallpaperLocation = '/tmp/wallpapers_wmaker/'
+ def remove_old_image_cache(self):
+ """Cleans up any old temp images"""
+ if not os.path.isdir(self._ConvertedWallpaperLocation):
+ os.mkdir(self._ConvertedWallpaperLocation)
+ for fullpath, filenames, dirnames in os.walk(self._ConvertedWallpaperLocation, topdown=False):
+ for filename in filenames:
+ os.unlink(os.path.join(fullpath, filename))
+ for dirname in dirnames:
+ os.unlink(os.path.join(fullpath, dirname))
+
+ def convert_image_format(self, file):
+ """Convert the image to a png, and store it in a local place"""
+ self.remove_old_image_cache()
+ output_name = os.path.join(self._ConvertedWallpaperLocation, '%s.png' % time.time())
+ cmd = ["convert", '-resize', '1280', '-gravity', 'Center', '-crop', '1280x800+0+0', file, output_name]
+ debug("""Convert command: '"%s"'""" % '" "'.join(cmd))
+ return output_name, subprocess.Popen(cmd, stdout=sys.stdout, stderr=sys.stderr, stdin=None).wait()
+
+ def set_image(self, file):
+ if self.convert:
+ file, convert_status = self.convert_image_format(file)
+ if convert_status:
+ debug('Convert failed')
+ cmd = ["wmsetbg",
+ "-b", self.background_color, # Sets the background colour to be what the user specified
+ "-S", # 'Smooth' (WTF?)
+ "-e", # Center the image on the screen (only affects when the image in no the in the correct aspect ratio
+### "-a", # scale the image, keeping the aspect ratio
+ "-u", # Force this to be the default background
+ "-d" # dither
+ ]
+ if self.permanent:
+ cmd += ["-u"] # update the wmaker database
+ cmd += [file]
+ debug('''WMaker bgset command: "'%s'"''' % "' '".join(cmd))
+ return not subprocess.Popen(cmd, stdout=sys.stdout, stderr=sys.stderr, stdin=None).wait()
+
+class OSXChanger(BaseChanger):
+ name = "Mac OS X"
+ _ConvertedWallpaperLocation = '/tmp/wallpapers/'
+ _DesktopPlistLocation = os.path.expanduser('~/Library/Preferences/com.apple.desktop.plist')
+
+ def __init__(self, *args, **kwargs):
+ BaseChanger.__init__(self, *args, **kwargs)
+ self.fix_desktop_plist()
+
+ def remove_old_image_cache(self):
+ """Cleans up any old temp images"""
+ if not os.path.isdir(self._ConvertedWallpaperLocation):
+ os.mkdir(self._ConvertedWallpaperLocation)
+ for fullpath, filenames, dirnames in os.walk(self._ConvertedWallpaperLocation, topdown=False):
+ for filename in filenames:
+ os.unlink(os.path.join(fullpath, filename))
+ for dirname in dirnames:
+ os.unlink(os.path.join(fullpath, dirname))
+
+ def convert_image_format(self, file):
+ """Convert the image to a png, and store it in a local place"""
+ self.remove_old_image_cache()
+ output_name = os.path.join(self._ConvertedWallpaperLocation, '%s.png' % time.time())
+ try:
+ import PIL, PIL.Image
+ img = PIL.Image.open(file)
+ img.save(output_name, "PNG")
+ return output_name, True
+ except ImportError:
+ debug('Could not load PIL, going to try just copying the image')
+ import shutil
+ output_name = os.path.join(self._ConvertedWallpaperLocation, os.path.basename(file))
+ shutil.copyfile(file, output_name)
+ return output_name, True
+
+ def fix_desktop_plist(self):
+ """Removes the entry in the desktop plist file that specifies the wallpaper for each monitor"""
+ try:
+ import Foundation
+ desktop_plist = Foundation.NSMutableDictionary.dictionaryWithContentsOfFile_(self._DesktopPlistLocation)
+ # Remove all but the 'default' entry
+ for k in desktop_plist['Background'].keys():
+ if k == 'default':
+ continue
+ desktop_plist['Background'].removeObjectForKey_(k)
+ # Store the plist again (Make sure we write it out atomically -- Don't want to break finder)
+ desktop_plist.writeToFile_atomically_(self._DesktopPlistLocation, True)
+ except ImportError:
+ debug('Could not import the Foundation module, you may have problems with dual screens')
+
+ def set_image(self, filename):
+ if self.convert:
+ filename, ret = self.convert_image_format(filename)
+ if not ret:
+ debug("Convert failed")
+ return False
+ cmd = """osascript -e 'tell application "finder" to set desktop picture to posix file "%s"'""" % filename
+ debug(cmd)
+ return not commands.getstatusoutput(cmd)[0]
+
+class GnomeChanger(BaseChanger):
+ name = "Gnome"
+ def set_image(self, file):
+ cmd = ['gconftool-2', '--type', 'string', '--set', '/desktop/gnome/background/picture_filename', file]
+ debug(cmd)
+ return not subprocess.Popen(cmd, stdout=sys.stdout, stderr=sys.stderr, stdin=None).wait()
+
+class KDEChanger(BaseChanger):
+ name = "KDE"
+ def set_image(self, file):
+ cmds = []
+ for group in ('Desktop0', 'Desktop0Screen0'):
+ base = ['kwriteconfig', '--file', 'kdesktoprc', '--group', group, '--key']
+ cmds.append(base + ['Wallpaper', file])
+ cmds.append(base + ['UseSHM', '--type', 'bool', 'true'])
+ cmds.append(base + ['WallpaperMode', 'ScaleAndCrop'])
+ cmds.append(base + ['MultiWallpaperMode', 'NoMulti'])
+
+ cmds.append(['dcop', 'kdesktop', 'KBackgroundIface', 'configure'])
+ for cmd in cmds:
+ debug(cmd)
+ if subprocess.Popen(cmd, stdout=sys.stdout, stderr=sys.stderr, stdin=None).wait() != 0:
+ return False
+
+ return True
+
+
+def main(filename):
+ import logging
+ logging.basicConfig(level=logging.DEBUG, format="%(levelname)s: %(message)s")
+ init()
+ set_image(filename)
+
+if __name__ == "__main__":
+ try:
+ filename = sys.argv[1]
+ except:
+ print >>sys.stderr, "Usage: %s filename" % sys.argv[0]
+ sys.exit(1)
+
+ main(filename)
+
+