Clean up the statusbar of an iOS screenshot. The time in the statusbar is maintained, but all other graphics are stripped out and replaced with graphics that show full battery and signal strength. The cellular provider is replaced with the Apple logo, . All graphics are built into the script, which works for any Retina iOS device in any orienta…

Cleanbar.py

#!/usr/bin/python

import Image
import base64, zlib

# Jay Parlar convinced me to turn this data structure
# from a dictionary into an object. 
class PackedImage(object):
  def __init__(self, mode, size, data):
    self.mode = mode
    self.size = size
    self.data = ''.join(data)
  
  def unpack(self):
    return Image.fromstring(self.mode,
                            self.size,
                            zlib.decompress(base64.b64decode(self.data)))

def cleanbar(screenshot):
  '''Clean up the statusbar in an iOS screenshot.

  Strip out everything except the clock and replace with minimal
  graphics that show full battery and signal strength.'''
  
  # This is for retina displays.
  height = 40
  clockwidth = 160

  # Statusbar image data for an iPhone 4, 4s, 5, 5c, or 5s portrait screenshot.
  # The data string is compressed and base64-encoded.
  limg = PackedImage('L',
                     (160, 40),
                     ['eJxjYBgFo2AUjIJRMJIBq8dAuwAvcHl5d6CdgA8Y/fy/AIcUq3',
                      'vH7gcf/396sLvDnZWebkIGa/5/ksMqIdf35j8CvOmTp7PDoODl',
                      'ax9swrw9P/+jgp89/PR1mcusEytrnRuq5l0426iHJmd5H+SkE1',
                      'UOkkwMTJL2lcdA3PtW+IyTm/7w56Pp8hTyEKD8H1Lg/E1BkUv4',
                      'BRRbp4skorsGFIRxuJ3n/gls0GcPingIYIMae2Uokp4//7/xQt',
                      'Pg+eb/T3QxBFD4CDXoswIFPCSwF8V5M9GsCzunBCRZvGdfeP//',
                      '/YXZPixAntK5MJzOY5gBN2oGBTwEYEeO3f//TdDtY2JgYIy7D5',
                      'e/H88IFsMJHsGVPqKAhwAaKM57iMVGwe0oSnYI4XEdA8MPuMKf',
                      'jOTzEMAWxfJLWGwsAoq/bzbnZOAwb3oFZBfjdR+1w08GxX0/BL',
                      'FYOe3/fBEok3vG/6WMWJQgACIdzaSAhwCMX1Ec2InFSmZfJI43',
                      'G17nMSh8gpoEyZVk8pDAIRT3/cvDnvh1Fj7++XihLlY5VEDt8i',
                      '/iPyrwx2apz2+w3G+sVSAakJvx6OejGfIU8uCA5TGK855ibaBw',
                      'HgRLHuIiwn3UBlko7kvErojvNFDuNJ0bBlCwBsl5G3GVvaJX/l',
                      '8Vpauz4IDvLNBh706B0udR3BEovVOGjm5CAYyu2dqMDIyaSU74',
                      'y7ZRMApGwSgYBaOAigAA3eJAYw=='])
  rimg = PackedImage('L',
                     (140, 40),
                     ['eJztlmtIFFEYhr/1srp4ScOktDQhtSzBIpOQilJbCbJAzTKFUg',
                      'sisigIQSy7oYH+CCNSs4i0SA3qR4oGQsmilGliYUlZIpHhpdt6',
                      '2didtzNz1t1V0F1t/Tfvj+8778x3Ds/MOWfOEMmSJUuWLFnzlT',
                      'Ix1tIeaINtaku1OnRlJs++NzvG+57GGa+mNH7VviryNLq0ltGu',
                      'iw5GU4T9Ft1TNGttfIYwTYqVio0olvL6IRg0w8Alyd0CvrUC/Y',
                      'GSS0f5llzhOu+gFios+3cGF9j4XgqDO2dH8XjNWZze4N5Sck7W',
                      'C9HMJUMb50Ar69AgFXW3K4jujXuLbd+B926WAwiKCRtZdApBMT',
                      'NIaGHlL3AWNQakCbmGWhZbcFY0/lqsY2kZClhMg7hMFHW6DVPG',
                      'EBSCjSyYlSVRKpFYSnBBuuQPrTMtEXQukitHDonTmC3RHmTxFE',
                      '5PHcNeLAqlUpnGWZqQyK8NYRVtRRc3J1DFYhjOsJiA3UQRE3XT',
                      'xpsbi/bx8plxKIWzfIRxO7RgB5uOGm7UaGbRXV/KYi5Wk6p7wH',
                      'da/7mxCGiyzvIdQdw/QwIdw11uotEuptphP/L6rCEqFdREbpHe',
                      '/8Eyap1lBH7c1yGJslHGzSa8E1PQh5/1Q/1r2PoqImWVQYdGr3',
                      'mzYJY1Y2QZRAD3DdhLx3Gbm83gnwSPPblJi2nFSJuSSgz7nGLG',
                      'nyzke+lHKPfPEU+ZeMDNdrSaKx1faENI9aeaNW8Y/OfLYsN6aY',
                      'Wa+z6EUzxauDmMR+bKc8ggCsdJ1jyEybNiriz1gdZZqqR9y2YD',
                      'encKxm9+sxhXTYXR+ocsxohAlATT0WKv74sFSzpapcKj0i7+hF',
                      '2ice1FzGSdV98XccFGSN+9DGxbQBbvYRxhyWcQWSzloUfFUj56',
                      'nSfrqvXiQUXu45Uslup8zCz2OY8sWCgVeJlzfxRNYr3LW/yoyO',
                      'uCwfRasnCeN0r/7lTETtwx9e8MvmwjyxVr57SJhdQ9rH6s0FUy',
                      'nmXi03ZETVaFjjY78paqWhgz1KjM/e34/2Ih76ggB5NxDIn0MN',
                      '9Kzg8wtT0iF1n2sud/nSxZsmTJWlD9A546FLU='])

  # Calculate various dimensions based on the size of the screenshot.
  width = screenshot.size[0]
  lbox = (0, 0, limg.size[0], limg.size[1])
  rbox = (width - rimg.size[0], 0, width, rimg.size[1])
  cl = (width - clockwidth)/2
  cr = cl + clockwidth
  
  # Cover over the statusbar except for the time.
  # Use the colors along the left edge.
  for y in range(height):
    p = screenshot.getpixel((0, y))[:3]
    screenshot.paste(p, (0, y, cl, y+1))
    screenshot.paste(p, (cr, y, width, y+1))

  # Decide whether the overlay text and graphics should be black or white.
  if sum(p)/3 > 192:        # p is the last color from the loop above
    textcolor = 'black'
  else:
    textcolor = 'white'

  # Create the masks.
  lmask = limg.unpack()
  rmask = rimg.unpack()

  # Make the overlays.
  left = Image.new('RGBA', limg.size, textcolor)
  left.putalpha(lmask)
  right = Image.new('RGBA', rimg.size, textcolor)
  right.putalpha(rmask)

  # Paste the overlays and return.
  screenshot.paste(left, lbox, left)
  screenshot.paste(right, rbox, right)
  return screenshot

# And here we go.
if __name__ == '__main__':
  import photos
  screenshot = photos.pick_image()
  photos.save_image(cleanbar(screenshot))

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