Python画布不能自动扩展为龟打印

  • Z时代
  • 2024-01-10
  • 分类：问答

我有一个关于L-系统的项目。我试图添加一张打印L系统的乌龟;但是，与文本字段不同，画布不会展开。当我打印更多文本时，我的文本字段使用滚动条进行扩展。然而，乌龟卡在画布上。我很困难。Python画布不能自动扩展为龟打印

frame2 = tki.Frame(frame, bg='yellow', width=810, height=510) 
frame2.pack() 
frame2.place(x=500,y=5) 
cv = Canvas(frame2, width=2000, height=2000) 
cv.place(x=0, y=0) 
screen = turtle.TurtleScreen(cv) 
t = turtle.RawTurtle(screen) 
hbar=Scrollbar(frame2,orient=HORIZONTAL) 
hbar.pack(side=BOTTOM,fill=X) 
hbar.config(command=cv.xview) 
vbar=Scrollbar(frame2,orient=VERTICAL) 
vbar.pack(side=RIGHT,fill=Y) 
vbar.config(command=cv.yview) 
cv.config(width=800,height=500) 
cv.config(xscrollcommand=hbar.set, yscrollcommand=vbar.set) 
cv.pack(side=LEFT,expand=True,fill=BOTH)

回答：

如果我正确理解你的问题，为什么不乌龟库提供了对您为此工作ScrolledCavas：

编辑：我已经在帧大小开始画布大小和加入ScrolledCanvas的reset()方法来扩大动态画布：

import tkinter as tk 
from turtle import TurtleScreen, RawTurtle, ScrolledCanvas 
size = 100 
canvsize = 300 
root = tk.Tk() 
root.geometry('600x500') 
frame = tk.Frame(root, width=300, height=300) 
frame.pack() 
frame.place(x=50, y=50) 
canvas = ScrolledCanvas(frame, canvwidth=canvsize, canvheight=canvsize) 
canvas.pack(side=tk.LEFT) 
screen = TurtleScreen(canvas) 
screen.bgcolor('yellow') 
turtle = RawTurtle(screen, visible=False) 
turtle.dot(size, "green") 
def expand(): 
    global canvsize, size 
    if size < 800: 
     size += 10 
     if size > canvsize: 
      canvsize += 100 
      canvas.reset(canvwidth=canvsize, canvheight=canvsize) 
     turtle.dot(size, "green") 
     screen.ontimer(expand, 100) 
screen.ontimer(expand, 100) 
screen.mainloop()

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