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presentation.py
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presentation.py
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import tkinter as tk
import glob
from PIL import Image, ImageTk
import os
def insertfiles():
"loads the list of files in the directory"
for filename in glob.glob("*.png"):
lst.insert(tk.END, filename)
def delete_item(event):
"Deletes a file in the list: called by lst.bind('<Control-d>', delete_item)"
n = lst.curselection()
os.remove(lst.get(n))
lst.delete(n)
def get_window_size():
"Returns the width and height of the screen to set images and canvas alike it: called by root.bind <Configure>"
root_w = root.winfo_width()
if root.winfo_width() > 200 and root.winfo_height() > 30:
w = root.winfo_width() - 200
h = root.winfo_height() - 30
else:
w = 200
h = 30
return w, h
def showimg(event):
"takes the selected image to show it, called by root.bind <Configure> and lst.bind <<ListboxSelect>>"
n = lst.curselection()
filename = lst.get(n)
im = Image.open(filename)
im = im.resize((get_window_size()), Image.ANTIALIAS)
img = ImageTk.PhotoImage(im)
w, h = img.width(), img.height()
canvas.image = img
canvas.config(width=w, height=h)
canvas.create_image(0, 0, image=img, anchor=tk.NW)
root.bind("<Configure>", lambda x: showimg(x))
root = tk.Tk()
root.geometry("800x600+300+50")
lst = tk.Listbox(root, width=20)
lst.pack(side="left", fill=tk.BOTH, expand=0)
lst.bind("<<ListboxSelect>>", showimg)
lst.bind("<Control-d>", delete_item)
insertfiles()
canvas = tk.Canvas(root)
canvas.pack()
root.mainloop()