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October 10, 2016 22:49
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Sets a random Spotlight image as wallpaper
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import sys | |
import os | |
import struct | |
import ctypes | |
import imghdr | |
import random | |
SystemParametersInfoW = ctypes.windll.user32.SystemParametersInfoW | |
def set_wallpaper(path): | |
SPI_SETDESKWALLPAPER = 20 | |
SPIF_UPDATEINIFILE = 1 | |
SystemParametersInfoW(SPI_SETDESKWALLPAPER, | |
0, | |
path, | |
SPIF_UPDATEINIFILE) | |
def get_wallpaper(): | |
SPI_GETDESKWALLPAPER = 115 | |
wallpaper = ctypes.create_unicode_buffer(256) | |
SystemParametersInfoW(SPI_GETDESKWALLPAPER, | |
len(wallpaper), | |
ctypes.byref(wallpaper), | |
0) | |
return wallpaper.value | |
def get_screen_size(): | |
SM_CXSCREEN = 0 | |
SM_CYSCREEN = 1 | |
width = ctypes.windll.user32.GetSystemMetrics(SM_CXSCREEN) | |
height = ctypes.windll.user32.GetSystemMetrics(SM_CYSCREEN) | |
return width, height | |
def probe_image(fname): | |
width = None | |
height = None | |
# borrowed from http://stackoverflow.com/a/20380514 | |
if imghdr.what(fname) != 'jpeg': | |
return width, height | |
with open(fname, 'rb') as fhandle: | |
try: | |
fhandle.seek(0) # Read 0xff next | |
size = 2 | |
ftype = 0 | |
while not 0xc0 <= ftype <= 0xcf: | |
fhandle.seek(size, 1) | |
byte = fhandle.read(1) | |
while ord(byte) == 0xff: | |
byte = fhandle.read(1) | |
ftype = ord(byte) | |
size = struct.unpack('>H', fhandle.read(2))[0] - 2 | |
# We are at a SOFn block | |
fhandle.seek(1, 1) # Skip `precision' byte. | |
height, width = struct.unpack('>HH', fhandle.read(4)) | |
except Exception: #IGNORE:W0703 | |
pass | |
return width, height | |
def main(argv): | |
path_appdata = os.getenv('APPDATA') | |
path_assets = os.path.join(path_appdata, '..\\Local\\Packages\\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\\LocalState\\Assets') | |
screen_width, screen_height = get_screen_size() | |
current = os.path.basename(get_wallpaper()) | |
images = [] | |
for file in os.listdir(path_assets): | |
# don't include the currently set wallpaper | |
if file == current: | |
continue | |
path = os.path.join(path_assets, file) | |
width, height = probe_image(path) | |
if width == screen_width and height == screen_height: | |
images.append(path) | |
if not images: | |
print('No suitable images found in assets folder') | |
return 1 | |
set_wallpaper(random.choice(images)) | |
if __name__ == '__main__': | |
sys.exit(main(sys.argv)) |
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