PIL und Tkinter

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Ein Beispiel einer Tkinter Oberfläche, die zwei Bilder anzeigt. Es werden ein paar (simple) Bildtransformationen demonstriert.

import sys
from PIL import Image, ImageTk
from Tkinter import Tk, Canvas, Button,Frame
import Pmw
import ImageEnhance


root = Tk()
root.title("Test")

im = Image.open("desktop_07_m_1280x960.bmp").convert("RGB")
im2= Image.open("desktop_07_m_1280x960.bmp").convert("RGB")
imview=im
imview2=im2

actualpercent_orig=1.0
actualpercent_modif=1.0

init=0

photo = ImageTk.PhotoImage(imview)
photo2 = ImageTk.PhotoImage(imview2)

pwmain = Pmw.PanedWidget(root,orient='vertical')
panephoto=pwmain.add("top",min = .1, size = .95)
panecontrol=pwmain.add("bottom",min = .05, size = .05)
pwmain.pack(fill = 'both', expand = 1)

pwphoto = Pmw.PanedWidget(panephoto,orient='horizontal')
pane1=pwphoto.add("left",min = .1, size = .5)
pane2=pwphoto.add("right",min = .1, size = .5)
pwphoto.pack(fill = 'both', expand = 1)
frameleft = Frame(pane1, background = 'grey90')
frameleft.pack(fill = 'both', expand = 1)
frameright = Frame(pane2, background = 'grey90')
frameright.pack(fill = 'both', expand = 1)

menuBarleft = Pmw.MenuBar(frameleft,
	hull_relief = 'raised',
	hull_borderwidth = 1)
menuBarleft.pack(fill = 'x')
menuBarleft.addmenu('View', '')


menuBarright = Pmw.MenuBar(frameright,
	hull_relief = 'raised',
	hull_borderwidth = 1)
menuBarright.pack(fill = 'x')
menuBarright.addmenu('View', '')

canvas=Pmw.ScrolledCanvas(frameleft,borderframe=1,labelpos='n',
                          label_text="Original",
                          hscrollmode='dynamic',vscrollmode='dynamic')
image1=canvas.create_image(0, 0, image=photo, anchor="nw")
canvas.pack(fill = 'both', expand = 1)
canvas.resizescrollregion()

canvas2=Pmw.ScrolledCanvas(frameright,borderframe=1,labelpos='n',
                          label_text="Modified",
                           hscrollmode='dynamic',vscrollmode='dynamic')
image2=canvas2.create_image(0, 0, image=photo2, anchor="nw")
canvas2.pack(fill = 'both', expand = 1)
canvas2.resizescrollregion()

def updateright():
    global imview2,im2,photo2,canvas2,image2,actualpercent_modif,init
    imview2=im2.resize((int(im2.size[0]*actualpercent_modif),
                         int(im2.size[1]*actualpercent_modif)))
    photo2 = ImageTk.PhotoImage(imview2)
    canvas2.delete(image2)
    image2=canvas2.create_image(0, 0, image=photo2, anchor="nw")
    canvas2.resizescrollregion()
    pass

def updateleft():
    global imview,im,photo,canvas,image1,actualpercent_orig
    imview =im.resize((int(im.size[0]*actualpercent_orig),
                         int(im.size[1]*actualpercent_orig)))
    photo = ImageTk.PhotoImage(imview)
    canvas.delete(image1)
    image1=canvas.create_image(0, 0, image=photo, anchor="nw")
    canvas.resizescrollregion()
    pass

   
class ViewClass:
    def __init__(self, which, percent):
        self.which = which
        self.percent=percent    
    def __call__(self):
        global actualpercent_modif,actualpercent_orig,init
        if init==1:
            if self.which=='right':
                actualpercent_modif=self.percent/100.
                updateright()
                pass
            if self.which=='left':
                actualpercent_orig=self.percent/100.
                updateleft()
                pass
            pass
        pass
    pass

        

def resize():
    global im2
    im2=im2.resize((500,500),Image.ANTIALIAS)
    updateright()
    
def rotate():
    global im2
    im2=im2.rotate(45)
    updateright()    


for i in range(10):
  menuBarleft.addmenuitem('View', 'command', '',
                      command = ViewClass('left',(i+1)*10),
                      label = str((i+1)*10)+'%')
                          
  menuBarright.addmenuitem('View', 'command', '',
                      command = ViewClass('right',(i+1)*10),
                      label = str((i+1)*10)+'%')


init=1

Button(panecontrol, text="resize", command=resize).grid(row=0,column=0)
Button(panecontrol, text="rotate", command=rotate).grid(row=0,column=1)

Button(panecontrol, text="done", command=root.quit).grid(row=1,column=0)


root.mainloop()