from tkinter import *
from tkinter.messagebox import *

class Flower() :            #<i> define a new class of objects</i>

    #<i> define the constructor for making new objects of this class </i>
    def __init__(self, x, y, colr) :
        self.size = 50          #<i>give an initial value to the size field</i>
        self.colour = colr      #<i>store the colr in the colour field </i>
        self.x = x            #<i>store the position in the x and y fields </i>
        self.y = x
        
    def move(self, stepX, stepY) :   #<i>define a move method that changes object on a canvas</i>
        self.x = self.x + stepX
        self.y = self.y + stepY

    def grow(self) :           #<i>define a grow method that makes the object bigger</i>
        self.size = self.size + 20

    def draw(self, canvas) :   #<i>define a draw method that draws the object on a canvas</i>
        rad = self.size/2
        smallrad = rad/2
        canvas.create_rectangle(self.x-3, self.y, self.x+3, self.y+100, fill="green", outline="green")
        canvas.create_oval(self.x-rad, self.y-rad, self.x+rad, self.y+rad, fill=self.colour)
        canvas.create_oval(self.x-smallrad, self.y-smallrad, self.x+smallrad, self.y+smallrad, fill="black")
    
 
   #<i>Elsewhere in program, create two objects and draw them:</i>


def main() :
    window = Tk()
    canvas = Canvas(window, width=450, height=300, bg = 'white')
    canvas.pack()

    bill = Flower(100, 100, "green")
    ben  = Flower(200, 100, "red")
    bill.draw(canvas)
    ben.draw(canvas)
     
    showinfo("", "Ready to move them?")
    canvas.delete(ALL)
    bill.grow()
    ben.move(20, 50)
    bill.draw(canvas)
    ben.draw(canvas)
    showinfo("", "All done?")


main()