AppIconMaker.py

"""
This can be run as is. It generates the complete "AppIcon.appiconset" folder. 
After this program finishes running, simply drag this folder into your project directory.
Make sure to remove the old one (with the same name––"AppIcon.appiconset").
The folder will be created in the directory of the image that you use.
"""

import PIL
import sys
import os
import shutil
from PIL import Image

print("A png of size 1024x1024 would be ideal.")
image_loc = raw_input("Image location: ").replace(" ", "")
image = PIL.Image.open(image_loc)
w, h = image.size
croppedImage = image.crop((0, 0, min(w, h), min(w, h)))

filenames = [
"iphone-20-2x.png",
"iphone-20-3x.png",
"iphone-29-2x.png",
"iphone-29-3x.png",
"iphone-40-2x.png",
"iphone-40-3x.png",
"iphone-60-2x.png",
"iphone-60-3x.png",
"ipad-20-1x.png",
"ipad-20-2x.png",
"ipad-29-1x.png",
"ipad-29-2x.png",
"ipad-40-1x.png",
"ipad-40-2x.png",
"ipad-76-1x.png",
"ipad-76-2x.png",
"ipad-83.5-2x.png"
]

data = [filename[:-4].split("-")[1:] for filename in filenames]

dir = os.path.dirname(image_loc)
folder = dir + "/AppIcon.appiconset/"

if os.path.exists(folder):
    if raw_input(folder + " already seems to exist. Remove it and procede? y/n ") == "y":
        shutil.rmtree(folder)
    else:
        sys.exit()

os.makedirs(folder)
print("Folder created at " + folder)

for n in range(len(data)):
    d = data[n]
    length = int(float(d[0]) * int(d[1].replace("x", "")))
    resizedImage = image.resize((length, length), PIL.Image.ANTIALIAS)
    resizedImage.save(folder + "/" + filenames[n])
    print("Saved " + filenames[n])


contents = """
{
  "images" : [
    {
      "size" : "20x20",
      "idiom" : "iphone",
      "filename" : "iphone-20-2x.png",
      "scale" : "2x"
    },
    {
      "size" : "20x20",
      "idiom" : "iphone",
      "filename" : "iphone-20-3x.png",
      "scale" : "3x"
    },
    {
      "size" : "29x29",
      "idiom" : "iphone",
      "filename" : "iphone-29-2x.png",
      "scale" : "2x"
    },
    {
      "size" : "29x29",
      "idiom" : "iphone",
      "filename" : "iphone-29-3x.png",
      "scale" : "3x"
    },
    {
      "size" : "40x40",
      "idiom" : "iphone",
      "filename" : "iphone-40-2x.png",
      "scale" : "2x"
    },
    {
      "size" : "40x40",
      "idiom" : "iphone",
      "filename" : "iphone-40-3x.png",
      "scale" : "3x"
    },
    {
      "size" : "60x60",
      "idiom" : "iphone",
      "filename" : "iphone-60-2x.png",
      "scale" : "2x"
    },
    {
      "size" : "60x60",
      "idiom" : "iphone",
      "filename" : "iphone-60-3x.png",
      "scale" : "3x"
    },
    {
      "size" : "20x20",
      "idiom" : "ipad",
      "filename" : "ipad-20-1x.png",
      "scale" : "1x"
    },
    {
      "size" : "20x20",
      "idiom" : "ipad",
      "filename" : "ipad-20-2x.png",
      "scale" : "2x"
    },
    {
      "size" : "29x29",
      "idiom" : "ipad",
      "filename" : "ipad-29-1x.png",
      "scale" : "1x"
    },
    {
      "size" : "29x29",
      "idiom" : "ipad",
      "filename" : "ipad-29-2x.png",
      "scale" : "2x"
    },
    {
      "size" : "40x40",
      "idiom" : "ipad",
      "filename" : "ipad-40-1x.png",
      "scale" : "1x"
    },
    {
      "size" : "40x40",
      "idiom" : "ipad",
      "filename" : "ipad-40-2x.png",
      "scale" : "2x"
    },
    {
      "size" : "76x76",
      "idiom" : "ipad",
      "filename" : "ipad-76-1x.png",
      "scale" : "1x"
    },
    {
      "size" : "76x76",
      "idiom" : "ipad",
      "filename" : "ipad-76-2x.png",
      "scale" : "2x"
    },
    {
      "size" : "83.5x83.5",
      "idiom" : "ipad",
      "filename" : "ipad-83.5-2x.png",
      "scale" : "2x"
    }
  ],
  "info" : {
    "version" : 1,
    "author" : "xcode"
  }
}
"""

file = open(folder + "Contents.json", "a")
file.write(contents)
file.close()

print("Saved Contents.json")
print("Wrote 28 files in 1 directory")