image-to-base64.py

from __future__ import print_function
# https://gist.github.com/GuyCarver/4132799

# https://forum.omz-software.com/topic/39/create-pythonista-webclips-directly-from-pythonista/2

#covert an image in the clipboard to a 57x57 rgb icon and store base64 version of it into the clipboard.
#if an image is not in the clipboard the base64 string 'b64str' will be loaded and displayed.
#after running the 1st time replace the contents of b64str with the clipboard.

from PIL import Image
import clipboard
from StringIO import *
import base64

b64str="""
replace this with contents of clipboard after 1st run.
"""

def main():
	global b64str
	cpimage = clipboard.get_image()
	#if image was in clipboard.
	if cpimage:
		#resize to icon size.
		icon = cpimage.resize((57, 57), Image.BILINEAR)
		#convert to rgb format.
		icon = icon.convert('RGB')
#               icon.show()     #show resized image.
		#create string buffer to write png file to.
		iconstr = StringIO()
		#write image to string buffer in png format.
		icon.save(iconstr, 'png')
		#convert save buffer to base64.
		b64str = base64.standard_b64encode(iconstr.getvalue())
		#put base64 string in clipboard.
		clipboard.set(b64str)
		
	#now decode to test.
	mystr = base64.standard_b64decode(b64str)
	#read file from string buffer.
	stb = StringIO(mystr)
	img = Image.open(stb)
	#show the image.
	img.show()
	#print some info.
	print(str(img.format))
	print(str(img.mode))
	print(str(img.size))
	print(str(img.info))
	
if __name__ == '__main__':
	main()