实现：tkinter 画布上显示图片，按下鼠标左键并且移动，实现截图

# -*- encoding=utf-8 -*-

import os

import tkinter as tk

from PIL import Image

from PIL import ImageTk

left_mouse_down_x = 0

left_mouse_down_y = 0

left_mouse_up_x = 0

left_mouse_up_y = 0

sole_rectangle = None

def left_mouse_down(event):

# print('鼠标左键按下')

global left_mouse_down_x, left_mouse_down_y

left_mouse_down_x = event.x

left_mouse_down_y = event.y

def left_mouse_up(event):

# print('鼠标左键释放')

global left_mouse_up_x, left_mouse_up_y

left_mouse_up_x = event.x

left_mouse_up_y = event.y

corp_img(img_path, 'img/one_corp.png', left_mouse_down_x, left_mouse_down_y,

left_mouse_up_x, left_mouse_up_y)

def moving_mouse(event):

# print('鼠标左键按下并移动')

global sole_rectangle

global left_mouse_down_x, left_mouse_down_y

moving_mouse_x = event.x

moving_mouse_y = event.y

if sole_rectangle is not None:

canvas.delete(sole_rectangle) # 删除前一个矩形

sole_rectangle = canvas.create_rectangle(left_mouse_down_x, left_mouse_down_y, moving_mouse_x,

moving_mouse_y, outline='red')

def right_mouse_down(event):

# print('鼠标右键按下')

pass

def right_mouse_up(event):

# print('鼠标右键释放')

pass

def corp_img(source_path, save_path, x_begin, y_begin, x_end, y_end):

if x_begin < x_end:

min_x = x_begin

max_x = x_end

else:

min_x = x_end

max_x = x_begin

if y_begin < y_end:

min_y = y_begin

max_y = y_end

else:

min_y = y_end

max_y = y_begin

save_path = os.path.abspath(save_path)

if os.path.isfile(source_path):

corp_image = Image.open(source_path)

region = corp_image.crop((min_x, min_y, max_x, max_y))

region.save(save_path)

print('裁剪完成,保存于:{}'.format(save_path))

else:

print('未找到文件:{}'.format(source_path))

if __name__ == '__main__':

pass

win = tk.Tk()

frame = tk.Frame()

frame.pack()

screenwidth = win.winfo_screenwidth()

screenheight = win.winfo_screenheight()

img_path = 'img/one.png'

# img_path = 'img/bg.jpg'

# img_path = 'img/test.jpg'

# img_path = 'img/pic.gif'

image = Image.open(img_path)

image_x, image_y = image.size

if image_x > screenwidth or image_y > screenheight:

print('The picture size is too big,max should in:{}x{}, your:{}x{}'.format(screenwidth,

screenheight,

image_x,

image_y))

img = ImageTk.PhotoImage(image)

canvas = tk.Canvas(frame, width=image_x, height=image_y, bg='pink')

i = canvas.create_image(0, 0, anchor='nw', image=img)

canvas.pack()

canvas.bind('', left_mouse_down) # 鼠标左键按下

canvas.bind('', left_mouse_up) # 鼠标左键释放

canvas.bind('', right_mouse_down) # 鼠标右键按下

canvas.bind('', right_mouse_up) # 鼠标右键释放

canvas.bind('', moving_mouse) # 鼠标左键按下并移动

win.mainloop()

原图one.png

运行

one_corp.png

以上就是python 实现图片裁剪小工具的详细内容，更多关于python 图片裁剪的资料请关注脚本之家其它相关文章！