這里的目標是在圖像上使用 tkinter 繪制一個矩形，然后按空格鍵并關閉圖像，但按空格時我無法關閉窗口。我這樣做是為了一個心理學實驗，最近我必須把這張圖片保存在一個文件夾中，如果不是問太多，如果你也幫我解決這個問題，我將非常感激......對不起import tkinter as tk from tkinter import *from PIL import Image, ImageTkimport sysclass ExampleApp(tk.Tk): def __init__(self): tk.Tk.__init__(self) self.x = self.y = 0 self.canvas = tk.Canvas(self, width=512, height=720, cursor="cross") self.canvas.pack(side="top", fill="both", expand=True) self.canvas.bind("<ButtonPress-1>", self.on_button_press) self.canvas.bind("<B1-Motion>", self.on_move_press) self.canvas.bind("<ButtonRelease-1>", self.on_button_release) self.rect = None self.start_x = None self.start_y = None self._draw_image()# Space to destroy self.canvas.bind("<space>", self.on_space_press) def _draw_image(self): self.im = Image.open('./EFCTupright_04203d903.jpg') self.tk_im = ImageTk.PhotoImage(self.im) self.canvas.create_image(0,0,anchor="nw",image=self.tk_im)# Destroy image: def on_space_press(self, event): app.destroy() def on_button_press(self, event): # save mouse drag start position self.start_x = event.x self.start_y = event.y # create rectangle if not yet exist #if not self.rect: self.rect = self.canvas.create_rectangle(self.x, self.y, 2, 2, fill="", outline="red") def on_move_press(self, event): curX, curY = (event.x, event.y) # expand rectangle as you drag the mouse self.canvas.coords(self.rect, self.start_x, self.start_y, curX, curY) def on_button_release(self, event): passif __name__ == "__main__": app = ExampleApp() app.mainloop()
1 回答
胡說叔叔
TA貢獻1804條經驗 獲得超8個贊
我編輯了你的代碼。
代替
self.canvas.bind("<space>", self.on_space_press)
利用
self.bind("<space>", self.on_space_press)
我還在您的代碼中添加了保存功能
def save_file(self):
# This will draw a rectangle on the image
self.draw.rectangle( self.rec_coords, outline=self.outline_color)
# Name of the file and format you want to save as
self.im.save("out_put.jpg","JPEG")
完整代碼
import tkinter as tk
from tkinter import *
from PIL import Image, ImageTk, ImageDraw
import sys
class ExampleApp(tk.Tk):
def __init__(self):
tk.Tk.__init__(self)
self.x = self.y = 0
self.canvas = tk.Canvas(self, width=512, height=720, cursor="cross", highlightthickness=0)
self.canvas.pack(side="top", fill="both", expand=True)
self.update()
self.canvas.bind("<ButtonPress-1>", self.on_button_press)
self.canvas.bind("<B1-Motion>", self.on_move_press)
self.canvas.bind("<ButtonRelease-1>", self.on_button_release)
self.rect = None
self.start_x = None
self.start_y = None
self.outline_color = "red"
self._draw_image()
# Space to destroy
self.bind("<space>", self.on_space_press)
def _draw_image(self):
self.im = Image.open('./EFCTupright_04203d903.jpg').resize((self.winfo_reqwidth(), self.winfo_reqheight()))
self.tk_im = ImageTk.PhotoImage(self.im)
self.draw = ImageDraw.Draw(self.im)
self.canvas.create_image(0,0,anchor="nw",image=self.tk_im)
# Destroy image:
def on_space_press(self, event):
self.save_file()
self.destroy()
def on_button_press(self, event):
# save mouse drag start position
self.start_x = event.x
self.start_y = event.y
# create rectangle if not yet exist
#if not self.rect:
self.rect = self.canvas.create_rectangle(self.x, self.y, 0, 0, outline=self.outline_color, tag="rect")
def on_move_press(self, event):
curX, curY = (event.x, event.y)
# expand rectangle as you drag the mouse
self.canvas.coords(self.rect, self.start_x, self.start_y, curX, curY)
def on_button_release(self, event):
pass
def save_file(self):
# This will draw a rectangle on the image
for rect in self.canvas.find_withtag("rect"):
self.draw.rectangle( self.canvas.coords(rect), outline=self.outline_color)
# Name of the file and format you want to save as
self.im.save("out_put.jpg","JPEG")
if __name__ == "__main__":
app = ExampleApp()
app.mainloop()
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