save canvas image in tkinter(python) postscript function

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Release date:2022/11/2　　　　　　　　　

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■Description
Explain how to save the image displayed on canvas in tkinter.

■Example
Display a suitable image on canvas and save it. The extension of the image to be saved is ".ps", and tkinter cannot save in jpg, png. The red "canvas.postscript" part below corresponds to the saving process.

import tkinter as tk
from PIL import Image, ImageTk

app = tk.Tk()
img = Image.open('test.jpg')

tk_img = ImageTk.PhotoImage(img)
img_width, img_height = img.size

canvas = tk.Canvas(app, width=img_width, height=img_height) # Creating an image display area
canvas.pack()
canvas.create_image(0, 0 , anchor = tk.NW, image=tk_img) # image display

canvas.postscript(file="test.ps", colormode='color') # Save image

app.mainloop()

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