我可以在 Python Tkinter Canvas 上对图像进行“屏幕截图"并将其保存在文件中吗? [英] Can I do 'screenshot' of image on the Python Tkinter Canvas and save it in the file?

问题描述

我编写了在 Python tkinter Canvas 中制作图像的程序，但我不知道如何保存我创建的图像.它可以是 png、gif 任何东西，但我想保存我的作品！

I made program to make images in Python tkinter Canvas, but I have no idea how to save images I created. It can be png, gif, anything, but I want to save my work!

这是我的代码:

import tkinter

from PIL import Image, ImageGrab

paint = tkinter.Tk()
paint.title('paint')
canvas = tkinter.Canvas(paint, width=1100, height=1000, bd=0, highlightthickness=0)
canvas.pack()



def capture(event):
    x0 = canvas.winfo_rootx()
    y0 = canvas.winfo_rooty()
    x1 = x0 + canvas.winfo_width()
    y1 = y0 + canvas.winfo_height()

    im = ImageGrab.grab((100, 0, 1100, 1000))
    im.save('mypic.png')

canvas.mainloop()

我删除了一些代码，因为它并不重要.但它在没有我的画布的情况下制作了一个截图！

I deleted some of my code because it isn't important. But it makes a screenshot without my canvas!

推荐答案

由于没有提供代码，我将举一个例子来说明这是如何完成的.默认情况下，tkinter 中有一些方法可以为您执行此操作.因此，为了截取屏幕截图，我们将使用 PIL.

Since there is no code provided, I will give you an example on how this is done. By default there is methods within tkinter that does this for you. So for taking screenshots, we will use PIL.

• 从安装 PIL 开始:

pip install Pillow

• 代码如下:

from tkinter import *
from PIL import Image, ImageGrab

root = Tk()

def capture():
    x0 = canvas.winfo_rootx()
    y0 = canvas.winfo_rooty()
    x1 = x0 + canvas.winfo_width()
    y1 = y0 + canvas.winfo_height()
    
    im = ImageGrab.grab((x0, y0, x1, y1))
    im.save('mypic.png') # Can also say im.show() to display it

canvas = Canvas(root,bg='red')
canvas.pack(padx=10,pady=10)

e = Entry(root)

canvas.create_window(canvas.canvasx(100),canvas.canvasy(100),window=e)

Button(root,text='Click a pic',command=capture).pack()

root.mainloop()

没什么太复杂的，坐标如下ImageGrab.grab((left,upper,right,lower))，这是一张可以帮助你更好地理解侧面的图片:

Nothing too complicated, the coordinates work as follows ImageGrab.grab((left,upper,right,lower)), here is an image that might help you understand the sides better:

注意(根据 WinEunuuchs2Unix):Linux 不支持 ImageGrab，对于替代方案，请使用 ImageGrab 替代方案linux

Note(as per WinEunuuchs2Unix): ImageGrab is not supported with Linux, for alternatives use ImageGrab alternative in linux

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