[英]How to display image with upload button in and resize it with window resize (Dynamically)with Tkinter python, I need to add upload button
我需要添加上传按钮,以便我可以使用此 class 上传图片并显示。 一切正常,但是当我添加上传按钮时,它给了我一些错误,并且我的代码无法正常工作。
import tkinter as tk
from tkinter import *
from PIL import Image, ImageTk
from tkinter import filedialog
class Layout:
def __init__(self,master):
self.master = master
self.rootgeometry()
self.canvas = tk.Canvas(self.master)
self.canvas.pack()
self.background_image = Image.open(self.openfn())
self.image_copy = self.background_image.copy()
self.background = ImageTk.PhotoImage(self.background_image)
self.loadbackground()
def loadbackground(self):
self.label = tk.Label(self.canvas, image = self.background)
self.label.bind('<Configure>',self.resizeimage)
self.label.pack(fill='both', expand='yes')
def openfn(self):
filename = filedialog.askopenfilename(title='open')
return filename
def rootgeometry(self):
x=int(self.master.winfo_screenwidth()*0.7)
y=int(self.master.winfo_screenheight()*0.7)
z = str(x) +'x'+str(y)
self.master.geometry(z)
def resizeimage(self,event):
image = self.image_copy.resize((self.master.winfo_width(),self.master.winfo_height()))
self.image1 = ImageTk.PhotoImage(image)
self.label.config(image = self.image1)
root = tk.Tk()
a = Layout(root)
root.mainloop()
在 class 构造函数中创建Button
小部件并将其与self.loadbackground
绑定。 此外,您不需要每次都重新创建Label
小部件,而是使用label.configure(image=yourimage)
。
这是代码:
import tkinter as tk
from tkinter import *
from PIL import Image, ImageTk
from tkinter import filedialog
class Layout:
def __init__(self,master):
self.master = master
self.rootgeometry()
self.button = Button(self.master, text='Upload', command=self.loadbackground)
self.button.pack()
self.canvas = tk.Canvas(self.master)
self.canvas.pack(fill=BOTH, expand=True)
self.background_image = None
self.image_copy = None
self.background = None
self.label = tk.Label(self.canvas)
self.label.pack(fill='both', expand=True)
def loadbackground(self):
self.background_image = Image.open(self.openfn())
self.image_copy = self.background_image.copy()
self.background = ImageTk.PhotoImage(self.background_image.resize((self.canvas.winfo_width(), self.canvas.winfo_height())))
self.label.configure(image=self.background)
self.label.bind('<Configure>',self.resizeimage)
def openfn(self):
filename = filedialog.askopenfilename(title='open')
return filename
def rootgeometry(self):
x=int(self.master.winfo_screenwidth()*0.7)
y=int(self.master.winfo_screenheight()*0.7)
z = str(x) +'x'+str(y)
self.master.geometry(z)
def resizeimage(self,event):
image = self.image_copy.resize((event.width, event.height))
self.image1 = ImageTk.PhotoImage(image)
self.label.config(image = self.image1)
root = tk.Tk()
a = Layout(root)
root.mainloop()
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