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 class WMakerChanger(BaseChanger
):
87 _ConvertedWallpaperLocation
= '/tmp/wallpapers_wmaker/'
88 def remove_old_image_cache(self
):
89 """Cleans up any old temp images"""
90 if not os
.path
.isdir(self
._ConvertedWallpaperLocation
):
91 os
.mkdir(self
._ConvertedWallpaperLocation
)
92 for fullpath
, filenames
, dirnames
in os
.walk(self
._ConvertedWallpaperLocation
, topdown
=False):
93 for filename
in filenames
:
94 os
.unlink(os
.path
.join(fullpath
, filename
))
95 for dirname
in dirnames
:
96 os
.unlink(os
.path
.join(fullpath
, dirname
))
98 def convert_image_format(self
, file):
99 """Convert the image to a png, and store it in a local place"""
100 self
.remove_old_image_cache()
101 output_name
= os
.path
.join(self
._ConvertedWallpaperLocation
, '%s.png' % time
.time())
102 cmd
= ["convert", '-resize', '1280', '-gravity', 'Center', '-crop', '1280x800+0+0', file, output_name
]
103 logging
.debug("""Convert command: '"%s"'""", '" "'.join(cmd
))
104 return output_name
, self
._runProgram
(cmd
)
106 def set_image(self
, file):
108 file, convert_status
= self
.convert_image_format(file)
110 logging
.debug('Convert failed')
112 "-b", self
.background_color
, # Sets the background colour to be what the user specified
113 "-S", # 'Smooth' (WTF?)
114 "-e", # Center the image on the screen (only affects when the image in no the in the correct aspect ratio
115 ### "-a", # scale the image, keeping the aspect ratio
116 "-u", # Force this to be the default background
120 cmd
+= ["-u"] # update the wmaker database
122 logging
.debug('''WMaker bgset command: "'%s'"''', "' '".join(cmd
))
123 return not self
._runProgram
(cmd
)
125 class OSXChanger(BaseChanger
):
127 _ConvertedWallpaperLocation
= '/tmp/wallpapers/'
128 _DesktopPlistLocation
= os
.path
.expanduser('~/Library/Preferences/com.apple.desktop.plist')
130 def __init__(self
, *args
, **kwargs
):
131 BaseChanger
.__init
__(self
, *args
, **kwargs
)
133 def remove_old_image_cache(self
):
134 """Cleans up any old temp images"""
135 if not os
.path
.isdir(self
._ConvertedWallpaperLocation
):
136 os
.mkdir(self
._ConvertedWallpaperLocation
)
137 for fullpath
, filenames
, dirnames
in os
.walk(self
._ConvertedWallpaperLocation
, topdown
=False):
138 for filename
in filenames
:
139 os
.unlink(os
.path
.join(fullpath
, filename
))
140 for dirname
in dirnames
:
141 os
.unlink(os
.path
.join(fullpath
, dirname
))
143 def convert_image_format(self
, file):
144 """Convert the image to a png, and store it in a local place"""
145 self
.remove_old_image_cache()
146 output_name
= os
.path
.join(self
._ConvertedWallpaperLocation
, '%s.png' % time
.time())
148 import PIL
, PIL
.Image
149 img
= PIL
.Image
.open(file)
150 img
.save(output_name
, "PNG")
151 return output_name
, True
153 logging
.debug('Could not load PIL, going to try just copying the image')
155 output_name
= os
.path
.join(self
._ConvertedWallpaperLocation
, os
.path
.basename(file))
156 shutil
.copyfile(file, output_name
)
157 return output_name
, True
159 def fix_desktop_plist(self
):
160 """Removes the entry in the desktop plist file that specifies the wallpaper for each monitor"""
163 desktop_plist
= Foundation
.NSMutableDictionary
.dictionaryWithContentsOfFile_(self
._DesktopPlistLocation
)
164 # Remove all but the 'default' entry
165 for k
in desktop_plist
['Background'].keys():
168 desktop_plist
['Background'].removeObjectForKey_(k
)
169 # Store the plist again (Make sure we write it out atomically -- Don't want to break finder)
170 desktop_plist
.writeToFile_atomically_(self
._DesktopPlistLocation
, True)
172 logging
.debug('Could not import the Foundation module, you may have problems with dual screens')
174 def set_image(self
, filename
):
175 self
.fix_desktop_plist()
177 filename
, ret
= self
.convert_image_format(filename
)
179 logging
.debug("Convert failed")
181 cmd
= """osascript -e 'tell application "finder" to set desktop picture to posix file "%s"'""" % filename
183 return not commands
.getstatusoutput(cmd
)[0]
185 class WIN32Changer(BaseChanger
):
187 _ConvertedWallpaperLocation
= os
.path
.join(os
.environ
.get('APPDATA', os
.path
.expanduser('~')), 'wallchanger')
189 def __init__(self
, *args
, **kwargs
):
190 BaseChanger
.__init
__(self
, *args
, **kwargs
)
192 logging
.warn('Running on windows, but convert is not set')
194 def remove_old_image_cache(self
):
195 """Cleans up any old temp images"""
196 if not os
.path
.isdir(self
._ConvertedWallpaperLocation
):
197 os
.mkdir(self
._ConvertedWallpaperLocation
)
198 for fullpath
, filenames
, dirnames
in os
.walk(self
._ConvertedWallpaperLocation
, topdown
=False):
199 for filename
in filenames
:
200 os
.unlink(os
.path
.join(fullpath
, filename
))
201 for dirname
in dirnames
:
202 os
.unlink(os
.path
.join(fullpath
, dirname
))
204 def convert_image_format(self
, file):
205 """Convert the image to a bmp, and store it in a local place"""
206 self
.remove_old_image_cache()
207 output_name
= os
.path
.join(self
._ConvertedWallpaperLocation
, '%s.bmp' % time
.time())
208 import PIL
, PIL
.Image
209 img
= PIL
.Image
.open(file)
210 if img
.mode
== 'RGBA':
211 img
= img
.convert('RGB')
212 img
.save(output_name
, 'BMP')
214 return output_name
, True
216 def set_image(self
, filename
):
218 user32
= ctypes
.windll
.user32
220 # Taken from the Platform SDK
221 SPI_SETDESKWALLPAPER
= 20
222 SPIF_SENDWININICHANGE
= 2
225 filename
, ret
= self
.convert_image_format(filename
)
227 logging
.debug("Convert failed")
230 # Parameters for SystemParametersInfoA are:
231 # (UINT uiAction, UINT uiParam, PVOID pvParam, UINT fWinIni)
232 user32
.SystemParametersInfoA(
233 SPI_SETDESKWALLPAPER
,
236 SPIF_SENDWININICHANGE
,
240 class GnomeChanger(BaseChanger
):
242 def set_image(self
, file):
243 cmd
= ['gconftool-2', '--type', 'string', '--set', '/desktop/gnome/background/picture_filename', file]
245 return not self
._runProgram
(cmd
)
247 class KDEChanger(BaseChanger
):
249 def set_image(self
, file):
251 for group
in ('Desktop0', 'Desktop0Screen0'):
252 base
= ['kwriteconfig', '--file', 'kdesktoprc', '--group', group
, '--key']
253 cmds
.append(base
+ ['Wallpaper', file])
254 cmds
.append(base
+ ['UseSHM', '--type', 'bool', 'true'])
255 cmds
.append(base
+ ['WallpaperMode', 'ScaleAndCrop'])
256 cmds
.append(base
+ ['MultiWallpaperMode', 'NoMulti'])
258 cmds
.append(['dcop', 'kdesktop', 'KBackgroundIface', 'configure'])
261 if self
._runProgram
(cmd
) != 0:
268 logging
.basicConfig(level
=logging
.DEBUG
, format
="%(levelname)s: %(message)s")
272 if __name__
== "__main__":
274 filename
= sys
.argv
[1]
276 print >>sys
.stderr
, "Usage: %s filename" % sys
.argv
[0]