2 # Copyright 2008 Greg Darke <greg@tsukasa.net.au>
3 # Copyright 2008 James Bunton <jamesbunton@fastmail.fm>
4 # Licensed for distribution under the GPL version 2, check COPYING for details
5 # This is a cross platform/cross window manager way to change your wallpaper
7 import commands
, sys
, os
, os
.path
, time
10 __all__
= ("init", "set_image")
15 def set_image(filename
):
16 logging
.info("Setting image: %s", filename
)
17 for changer
in changers
:
18 if not changer
.set_image(filename
):
19 logging
.warning("Failed to set background: wallchanger.set_image(%s), changer=%s", filename
, changer
)
21 def init(*args
, **kwargs
):
22 """Desktop Changer factory"""
24 if sys
.platform
== "win32":
25 changers
.append(WIN32Changer(*args
, **kwargs
))
28 logging
.debug("Testing for OSX (NonX11)")
29 if commands
.getstatusoutput("ps ax -o command -c|grep -q WindowServer")[0] == 0:
30 changers
.append(OSXChanger(*args
, **kwargs
))
32 if 'DISPLAY' not in os
.environ
or os
.environ
['DISPLAY'].startswith('/tmp/launch'):
36 if os
.uname()[0] == 'Darwin':
37 # Try to detect if the X11 server is running on OSX
38 if commands
.getstatusoutput("ps ax -o command|grep -q '^/.*X11 .* %s'" % os
.environ
['DISPLAY'])[0] != 0:
39 # X11 is not running for this display
42 logging
.debug("Testing for KDE")
43 if commands
.getstatusoutput("xwininfo -name 'KDE Desktop'")[0] == 0:
44 changers
.append(KDEChanger(*args
, **kwargs
))
46 logging
.debug("Testing for Gnome")
47 if commands
.getstatusoutput("xwininfo -name 'gnome-settings-daemon'")[0] == 0:
48 changers
.append(GnomeChanger(*args
, **kwargs
))
50 logging
.debug("Testing for WMaker")
51 if commands
.getstatusoutput("xlsclients | grep -qi wmaker")[0] == 0:
52 changers
.append(WMakerChanger(*args
, **kwargs
))
54 if len(changers
) == 0:
55 raise Exception("Unknown window manager")
58 class BaseChanger(object):
60 def __init__(self
, background_color
='black', permanent
=False, convert
=False):
61 logging
.info('Determined the window manager is "%s"', self
.name
)
62 self
.background_color
= background_color
63 self
.permanent
= permanent
64 self
.convert
= convert
69 self
._runProgram
= self
._runProgram
_command
71 self
._runProgram
= self
._runProgram
_subprocess
73 def _runProgram_subprocess(self
, cmd
):
75 return subprocess
.Popen(cmd
, stdout
=sys
.stdout
, stderr
=sys
.stderr
, stdin
=None).wait()
77 # A simple implementation of subprocess for python2.4
78 def _runProgram_command(self
, cmd
):
79 """Runs a program given in cmd"""
80 return os
.spawnvp(os
.P_WAIT
, cmd
[0], cmd
)
82 def set_image(self
, filename
):
83 raise NotImplementedError()
85 def convert_image_format(self
, filename
, format
='BMP', allowAlpha
=False, extension
='.bmp'):
86 """Convert the image to another format, and store it in a local place"""
87 if not os
.path
.exists(filename
):
88 return filename
, False
91 self
.remove_old_image_cache()
92 output_name
= os
.path
.join(self
._ConvertedWallpaperLocation
, '%s%s' % (time
.time(), extension
))
93 img
= PIL
.Image
.open(filename
)
95 # Remove the alpha channel if the user doens't want it
96 if not allowAlpha
and img
.mode
== 'RGBA':
97 img
= img
.convert('RGB')
98 img
.save(output_name
, format
)
100 return output_name
, True
103 class WMakerChanger(BaseChanger
):
105 _ConvertedWallpaperLocation
= '/tmp/wallpapers_wmaker/'
106 def remove_old_image_cache(self
):
107 """Cleans up any old temp images"""
108 if not os
.path
.isdir(self
._ConvertedWallpaperLocation
):
109 os
.mkdir(self
._ConvertedWallpaperLocation
)
110 for fullpath
, filenames
, dirnames
in os
.walk(self
._ConvertedWallpaperLocation
, topdown
=False):
111 for filename
in filenames
:
112 os
.unlink(os
.path
.join(fullpath
, filename
))
113 for dirname
in dirnames
:
114 os
.unlink(os
.path
.join(fullpath
, dirname
))
116 def convert_image_format(self
, file):
117 """Convert the image to a png, and store it in a local place"""
118 self
.remove_old_image_cache()
119 output_name
= os
.path
.join(self
._ConvertedWallpaperLocation
, '%s.png' % time
.time())
120 cmd
= ["convert", '-resize', '1280', '-gravity', 'Center', '-crop', '1280x800+0+0', file, output_name
]
121 logging
.debug("""Convert command: '"%s"'""", '" "'.join(cmd
))
122 return output_name
, self
._runProgram
(cmd
)
124 def set_image(self
, file):
126 file, convert_status
= self
.convert_image_format(file)
128 logging
.debug('Convert failed')
130 "-b", self
.background_color
, # Sets the background colour to be what the user specified
131 "-S", # 'Smooth' (WTF?)
132 "-e", # Center the image on the screen (only affects when the image in no the in the correct aspect ratio
133 ### "-a", # scale the image, keeping the aspect ratio
134 "-u", # Force this to be the default background
138 cmd
+= ["-u"] # update the wmaker database
140 logging
.debug('''WMaker bgset command: "'%s'"''', "' '".join(cmd
))
141 return not self
._runProgram
(cmd
)
143 class OSXChanger(BaseChanger
):
145 _ConvertedWallpaperLocation
= '/tmp/wallpapers/'
146 _DesktopPlistLocation
= os
.path
.expanduser('~/Library/Preferences/com.apple.desktop.plist')
148 def __init__(self
, *args
, **kwargs
):
149 BaseChanger
.__init
__(self
, *args
, **kwargs
)
151 def remove_old_image_cache(self
):
152 """Cleans up any old temp images"""
153 if not os
.path
.isdir(self
._ConvertedWallpaperLocation
):
154 os
.mkdir(self
._ConvertedWallpaperLocation
)
155 for fullpath
, filenames
, dirnames
in os
.walk(self
._ConvertedWallpaperLocation
, topdown
=False):
156 for filename
in filenames
:
157 os
.unlink(os
.path
.join(fullpath
, filename
))
158 for dirname
in dirnames
:
159 os
.unlink(os
.path
.join(fullpath
, dirname
))
161 def convert_image_format(self
, file):
162 """Convert the image to a png, and store it in a local place"""
163 self
.remove_old_image_cache()
164 output_name
= os
.path
.join(self
._ConvertedWallpaperLocation
, '%s.png' % time
.time())
166 return super(OSXChanger
, self
).convert_image_format(file, format
='PNG', extension
='.png')
168 logging
.debug('Could not load PIL, going to try just copying the image')
170 output_name
= os
.path
.join(self
._ConvertedWallpaperLocation
, os
.path
.basename(file))
171 shutil
.copyfile(file, output_name
)
172 return output_name
, True
174 def fix_desktop_plist(self
):
175 """Removes the entry in the desktop plist file that specifies the wallpaper for each monitor"""
178 desktop_plist
= Foundation
.NSMutableDictionary
.dictionaryWithContentsOfFile_(self
._DesktopPlistLocation
)
179 # Remove all but the 'default' entry
180 for k
in desktop_plist
['Background'].keys():
183 desktop_plist
['Background'].removeObjectForKey_(k
)
184 # Store the plist again (Make sure we write it out atomically -- Don't want to break finder)
185 desktop_plist
.writeToFile_atomically_(self
._DesktopPlistLocation
, True)
187 logging
.debug('Could not import the Foundation module, you may have problems with dual screens')
189 def set_image(self
, filename
):
190 self
.fix_desktop_plist()
192 filename
, ret
= self
.convert_image_format(filename
)
194 logging
.debug("Convert failed")
196 cmd
= """osascript -e 'tell application "finder" to set desktop picture to posix file "%s"'""" % filename
198 return not commands
.getstatusoutput(cmd
)[0]
200 class WIN32Changer(BaseChanger
):
202 _ConvertedWallpaperLocation
= os
.path
.join(os
.environ
.get('APPDATA', os
.path
.expanduser('~')), 'wallchanger')
204 def __init__(self
, *args
, **kwargs
):
205 BaseChanger
.__init
__(self
, *args
, **kwargs
)
207 logging
.warn('Running on windows, but convert is not set')
209 def remove_old_image_cache(self
):
210 """Cleans up any old temp images"""
211 if not os
.path
.isdir(self
._ConvertedWallpaperLocation
):
212 os
.mkdir(self
._ConvertedWallpaperLocation
)
213 for fullpath
, filenames
, dirnames
in os
.walk(self
._ConvertedWallpaperLocation
, topdown
=False):
214 for filename
in filenames
:
215 os
.unlink(os
.path
.join(fullpath
, filename
))
216 for dirname
in dirnames
:
217 os
.unlink(os
.path
.join(fullpath
, dirname
))
219 def set_image(self
, filename
):
221 user32
= ctypes
.windll
.user32
223 # Taken from the Platform SDK
224 SPI_SETDESKWALLPAPER
= 20
225 SPIF_SENDWININICHANGE
= 2
228 filename
, ret
= self
.convert_image_format(filename
)
230 logging
.debug("Convert failed")
233 # Parameters for SystemParametersInfoA are:
234 # (UINT uiAction, UINT uiParam, PVOID pvParam, UINT fWinIni)
235 user32
.SystemParametersInfoA(
236 SPI_SETDESKWALLPAPER
,
239 SPIF_SENDWININICHANGE
,
243 class GnomeChanger(BaseChanger
):
245 def set_image(self
, file):
246 cmd
= ['gconftool-2', '--type', 'string', '--set', '/desktop/gnome/background/picture_filename', file]
248 return not self
._runProgram
(cmd
)
250 class KDEChanger(BaseChanger
):
252 def set_image(self
, file):
254 for group
in ('Desktop0', 'Desktop0Screen0'):
255 base
= ['kwriteconfig', '--file', 'kdesktoprc', '--group', group
, '--key']
256 cmds
.append(base
+ ['Wallpaper', file])
257 cmds
.append(base
+ ['UseSHM', '--type', 'bool', 'true'])
258 cmds
.append(base
+ ['WallpaperMode', 'ScaleAndCrop'])
259 cmds
.append(base
+ ['MultiWallpaperMode', 'NoMulti'])
261 cmds
.append(['dcop', 'kdesktop', 'KBackgroundIface', 'configure'])
264 if self
._runProgram
(cmd
) != 0:
271 logging
.basicConfig(level
=logging
.DEBUG
, format
="%(levelname)s: %(message)s")
275 if __name__
== "__main__":
277 filename
= sys
.argv
[1]
279 print >>sys
.stderr
, "Usage: %s filename" % sys
.argv
[0]