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#
# The Python Imaging Library
# $Id$
#
# this demo script creates four windows containing an image and a slider.
# drag the slider to modify the image.
#
from Tkinter import *
from PIL import Image, ImageTk, ImageEnhance
import sys
#
# enhancer widget
class Enhance(Frame):
def __init__(self, master, image, name, enhancer, lo, hi):
Frame.__init__(self, master)
# set up the image
self.tkim = ImageTk.PhotoImage(image.mode, image.size)
self.enhancer = enhancer(image)
self.update("1.0") # normalize
# image window
Label(self, image=self.tkim).pack()
# scale
s = Scale(self, label=name, orient=HORIZONTAL,
from_=lo, to=hi, resolution=0.01,
command=self.update)
s.set(self.value)
s.pack()
def update(self, value):
self.value = eval(value)
self.tkim.paste(self.enhancer.enhance(self.value))
#
# main
root = Tk()
im = Image.open(sys.argv[1])
im.thumbnail((200, 200))
Enhance(root, im, "Color", ImageEnhance.Color, 0.0, 4.0).pack()
Enhance(Toplevel(), im, "Sharpness", ImageEnhance.Sharpness, -2.0, 2.0).pack()
Enhance(Toplevel(), im, "Brightness", ImageEnhance.Brightness, -1.0, 3.0).pack()
Enhance(Toplevel(), im, "Contrast", ImageEnhance.Contrast, -1.0, 3.0).pack()
root.mainloop()
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