# Tk_fade_out_image.py -- ZZZ

# Tk_fade_out_image.py -- ZZZ unable figure this one out at the moment

from Tkinter import *
from PIL import Image,ImageTk,ImageDraw
import urllib2
import sys
import base64

t = Tk()
t.title("Fade Out Image")

frame = Frame(t)
frame.pack()

canvas = Canvas(frame, bg="gray", width=400, height=400)
canvas.pack()

def fade():
    global img
    canvas.delete('all')
    create1()
    if img.image_alpha < 255:
        #img.set_alpha(img.image_alpha)
        canvas.create_image(150, 150, image=img)
        print (img.image_alpha)
        img.image_alpha += int(255/img.fade_frame_number)
        t.after(img.milsec/img.fade_frame_number, fade)
    else: btn.configure(state=NORMAL); img=''
    create2()
#
img=''
def fade_out():
    global img
    btn.configure(state=DISABLED)
    img=image1
    img.image_alpha = 0
    img.fade_frame_number = 30
    img.milsec = 3000 # 3 second fade
    fade()
#
solidball = "solidball.png"
example = "example.png"

try:
    image1 = ImageTk.PhotoImage(file=solidball)
    image2 = ImageTk.PhotoImage(file=example)
    print 'Images copied from URL to drive'
except:
    def oURL(dd):
        URL = 'http://tinyurl.com/h2sball00'+str(dd)

        u = urllib2.urlopen(URL)
        raw_data = u.read()
        u.close()
        b64_data = base64.encodestring(raw_data)
        return PhotoImage(data=b64_data)
    image1 = oURL(1)
    image2 = oURL(2)
    image1.save()
    image2.save()
#

def create1():
    canvas.create_rectangle((100, 100, 300, 300), fill="darkgray")
def create2():
    canvas.create_image(250, 250, image=image2)
create1()
canvas.create_image(150, 150, image=image1)
create2()

btn = Button(t, text=" Click To Fade Away An Image... ", command=fade_out)
btn.pack()

t.mainloop()

photo1 = Image.open(solidball)
photo2 = Image.open(example)

base, overlay = photo1, photo2

bands = list(overlay.split())
if len(bands) == 4:
    # Assuming alpha is the last band
    bands[3] = bands[3].point(lambda x: x*0.5)
overlay = Image.merge(overlay.mode, bands)

base.paste(overlay, (0, 0), overlay)

base.show()