In Tkinter, Canvas class is used to create different shapes with the help of some functions which are defined under Canvas class. Any shape that Canvas class creates requires a canvas, so before creating any shapes a Canvas object is required and needs to be packed to the main window.
Canvas Methods for shapes:
Canvas.create_oval(x1, y1, x2, y2, options = …): It is used to create a oval, pieslice and chord.
Canvas.create_rectangle(x1, y1, x2, y2, options = …): It is used to create rectangle and square.
Canvas.create_arc(x1, y1, x2, y2, options = …) This is used to create an arc.
Canvas.create_polygon(coordinates, options = …) THis is used to create any valid shapes.
We are using a class to show the working of functions that helps to creates different shapes.
Class parameters –
Data members used: master, canvas
Member functions used: create() method
Widgets used: Canvas
Tkinter method used:
Canvas.create_oval()
Canvas.create_rectangle()
Canvas.create_arc()
Canvas.create_polygon()
pack()
title()
geometry()
Below is the Python code –
Python3
# Imports each and every method and class# of module tkinter and tkinter.ttkfrom 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, responsible 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") # Infinite loop breaks only by interrupt mainloop() |
Output:
