Merged in the wallpaper setting code for Windows (Tested on Windows XP, without PIL).

diff --git a/wallchanger.py b/wallchanger.py
index a9c894506dacf36f1dd7cbe6953b7108c9cb2e9a..7386293abb83d9d502a652f22f8ff68fd662abf7 100755 (executable)
--- a/wallchanger.py
+++ b/wallchanger.py
@@ -21,6 +21,10 @@ def set_image(filename):
 def init(*args, **kwargs):
        """Desktop Changer factory"""
 
+       if sys.platform == "win32":
+               changers.append(WIN32Changer(*args, **kwargs))
+               return
+
        logging.debug("Testing for OSX (NonX11)")
        if commands.getstatusoutput("ps ax -o command -c|grep -q WindowServer")[0] == 0:
                changers.append(OSXChanger(*args, **kwargs))
@@ -178,6 +182,61 @@ class OSXChanger(BaseChanger):
                logging.debug(cmd)
                return not commands.getstatusoutput(cmd)[0]
 
+class WIN32Changer(BaseChanger):
+       name = "Windows"
+       _ConvertedWallpaperLocation = os.path.join(os.environ.get('APPDATA', os.path.expanduser('~')), 'wallchanger')
+
+       def __init__(self, *args, **kwargs):
+               BaseChanger.__init__(self, *args, **kwargs)
+               if not self.convert:
+                       logging.warn('Running on windows, but convert is not set')
+
+       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 bmp, and store it in a local place"""
+               self.remove_old_image_cache()
+               output_name = os.path.join(self._ConvertedWallpaperLocation, '%s.bmp' % time.time())
+               import PIL, PIL.Image
+               img = PIL.Image.open(file)
+               if img.mode == 'RGBA':
+                       img = img.convert('RGB')
+               img.save(output_name, 'BMP')
+
+               return output_name, True
+
+       def set_image(self, filename):
+               import ctypes
+               user32 = ctypes.windll.user32
+
+               # Taken from the Platform SDK
+               SPI_SETDESKWALLPAPER = 20
+               SPIF_SENDWININICHANGE = 2
+
+               if self.convert:
+                       filename, ret = self.convert_image_format(filename)
+                       if not ret:
+                               logging.debug("Convert failed")
+                               return False
+
+               # Parameters for SystemParametersInfoA are:
+               # (UINT uiAction, UINT uiParam, PVOID pvParam, UINT fWinIni)
+               user32.SystemParametersInfoA(
+                       SPI_SETDESKWALLPAPER,
+                       0,
+                       filename,
+                       SPIF_SENDWININICHANGE,
+               )
+               return True
+
 class GnomeChanger(BaseChanger):
        name = "Gnome"
        def set_image(self, file):