如何使用类在 tkinter 画布上配置多边形? [英] How to configure a polygon on a tkinter canvas using a class?

问题描述

这是我当前的工作代码，但我想添加一个函数，该函数将在主循环"期间更改形状的颜色:

This is my current working code but I want to add in a function that will change the color of the shape during 'mainloop':

from Tkinter import*

root = Tk()

class GUI(Canvas):
    '''inherits Canvas class (all Canvas methodes, attributes will be accessible)
   You can add your customized methods here.
   '''
    def __init__(self,master,*args,**kwargs):
        Canvas.__init__(self, master=master, *args, **kwargs)

polygon = GUI(root)
polygon.create_polygon([150,75,225,0,300,75,225,150],     outline='gray', 
        fill='gray', width=2)

polygon.pack()
root.mainloop()

我在想这样的事情会起作用(在课堂内):

I was thinking something like this would work (inside the class):

def configure(self,colour):
    Canvas.itemconfig(self,fill=colour)

然后我用:

polygon.configure('red')

但是我一直收到这个错误，我不知道如何解决它:

But I keep getting this error and I dont know how to fix it:

Exception in Tkinter callback
File "C:/Users/User/Documents/Algies homework/Hexaheaflexagon sim.py", line 117, in configure
Canvas.itemconfig(self,fill=colour)
TypeError: itemconfigure() missing 1 required positional argument: 'tagOrId'

推荐答案

我想你尝试这样做

from Tkinter import*

# --- class ---

class GUI(Canvas):
    '''inherits Canvas class (all Canvas methodes, attributes will be accessible)
   You can add your customized methods here.
   '''
    def __init__(self,master,*args,**kwargs):
        Canvas.__init__(self, master=master, *args, **kwargs)
        # default - poly not exists
        self.poly = None

    def create_poly(self, points, outline='gray', fill='gray', width=2):
        # remember poly
        self.poly = self.create_polygon(points, outline=outline, fill=fill, width=width)

    def set_poly_fill(self, color):
        # if poly exists then you can change fill
        if self.poly:
            self.itemconfig(self.poly, fill=color)

# --- main ---

root = Tk()

polygon = GUI(root)
polygon.create_poly([150,75,225,0,300,75,225,150])
polygon.set_poly_fill('red')
polygon.pack()

root.mainloop()

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