Python Tkinter使用Canvas类创建不同的形状

在Tkinter, 帆布类用于在Canvas类下定义的某些功能的帮助下创建不同的形状。 Canvas类创建的任何形状都需要一个画布, 因此在创建任何形状之前, 需要一个Canvas对象, 并且必须将其打包到主窗口中。

画布的形状方法：Canvas.create_oval(x1, y1, x2, y2, options =…)：用于创建椭圆形, 派斯和弦。
Canvas.create_rectangle(x1, y1, x2, y2, options =…)：用于创建矩形和正方形。
Canvas.create_arc(x1, y1, x2, y2, options =…)用于创建圆弧。
Canvas.create_polygon(coordinates, options =…)用于创建任何有效的形状。

我们正在使用一个类来展示有助于创建不同形状的函数的工作方式。

类参数–

使用的数据成员：master,
canvas使用的成员函数：create()方法
使用的小部件：Canvas
Tkinter使用的方法：Canvas.create_oval()
Canvas.create_rectangle()
Canvas.create_arc()
Canvas.create_polygon()
pack()
title()
geometry()

以下是Python代码–

# Imports each and every method and class
# of module tkinter and tkinter.ttk
from tkinter import * from tkinter.ttk import * class Shape:
     def __init__( self , master = None ):
         self .master = master
          
         # Calls create method of class Shape
         self .create()
      
     def create( self ):
          
         # Creates a object of class canvas
         # with the help of this we can create different shapes
         self .canvas = Canvas( self .master)
  
         # Creates a circle of diameter 80
         self .canvas.create_oval( 10 , 10 , 80 , 80 , outline = "black" , fill = "white" , width = 2 )
          
         # Creates an ellipse with horizontal diameter
         # of 210 and vertical diameter of 80
         self .canvas.create_oval( 110 , 10 , 210 , 80 , outline = "red" , fill = "green" , width = 2 )
          
         # Creates a rectangle of 50x60 (heightxwidth)
         self .canvas.create_rectangle( 230 , 10 , 290 , 60 , outline = "black" , fill = "blue" , width = 2 )
          
         # Creates an arc of 210 deg
         self .canvas.create_arc( 30 , 200 , 90 , 100 , start = 0 , extent = 210 , outline = "green" , fill = "red" , width = 2 )
          
         points = [ 150 , 100 , 200 , 120 , 240 , 180 , 210 , 200 , 150 , 150 , 100 , 200 ]
          
         # Creates a polygon
         self .canvas.create_polygon(points, outline = "blue" , fill = "orange" , width = 2 )
         # Pack the canvas to the main window and make it expandable
         self .canvas.pack(fill = BOTH, expand = 1 )
  
if __name__ = = "__main__" :
      
     # object of class Tk, resposible for creating
     # a tkinter toplevel window
     master = Tk()
     shape = Shape(master)
  
     # Sets the title to Shapes
     master.title( "Shapes" )
  
     # Sets the geometry and position
     # of window on the screen
     master.geometry( "330x220 + 300 + 300" )
  
     # Infnite loop breaks only by interrupt
     mainloop()

输出如下：

首先, 你的面试准备可通过以下方式增强你的数据结构概念：Python DS课程。