Python 中 Tkinter Canvas 上 .jpg 图像的滚动条
我正在尝试在画布上制作可滚动的 jpeg，但我似乎无法让滚动条工作。这是一些示例代码：
from Tkinter import *
import Image, ImageTk
root = Tk()
frame = Frame(root, bd=2, relief=SUNKEN)
frame.grid_rowconfigure(0, weight=1)
frame.grid_columnconfigure(0, weight=1)
xscrollbar = Scrollbar(frame, orient=HORIZONTAL)
xscrollbar.grid(row=1, column=0, sticky=E+W)
yscrollbar = Scrollbar(frame)
yscrollbar.grid(row=0, column=1, sticky=N+S)
canvas = Canvas(frame, bd=0, xscrollcommand=xscrollbar.set, yscrollcommand=yscrollbar.set)
canvas.grid(row=0, column=0, sticky=N+S+E+W)
File = "jpg filepath here"
img = ImageTk.PhotoImage(Image.open(File))
canvas.create_image(0,0,image=img, anchor="nw")
xscrollbar.config(command=canvas.xview)
yscrollbar.config(command=canvas.yview)
frame.pack()
root.mainloop()
I'm trying to make a jpeg on a canvas scrollable but I can't seem to get my scrollbars to work. Here's some example code:
from Tkinter import *
import Image, ImageTk
root = Tk()
frame = Frame(root, bd=2, relief=SUNKEN)
frame.grid_rowconfigure(0, weight=1)
frame.grid_columnconfigure(0, weight=1)
xscrollbar = Scrollbar(frame, orient=HORIZONTAL)
xscrollbar.grid(row=1, column=0, sticky=E+W)
yscrollbar = Scrollbar(frame)
yscrollbar.grid(row=0, column=1, sticky=N+S)
canvas = Canvas(frame, bd=0, xscrollcommand=xscrollbar.set, yscrollcommand=yscrollbar.set)
canvas.grid(row=0, column=0, sticky=N+S+E+W)
File = "jpg filepath here"
img = ImageTk.PhotoImage(Image.open(File))
canvas.create_image(0,0,image=img, anchor="nw")
xscrollbar.config(command=canvas.xview)
yscrollbar.config(command=canvas.yview)
frame.pack()
root.mainloop()
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您需要告诉画布要滚动绘图空间的哪一部分。使用类似的内容：
更多信息可以在这里找到：http://effbot.org/tkinterbook/ canvas.htm#坐标系统
You need to tell the canvas what part of the drawing space to scroll. Use something like:
More information can be found here: http://effbot.org/tkinterbook/canvas.htm#coordinate-systems