#!/usr/bin/env python

import PySimpleGUI as sg

import turtle

"""

Demo showing how to integrate drawing on a Canvas using Turtle with PySimpleGUI

The patern to follow:

Create Window & Finalize

Get the tkinter Canvas from the Canvas element

Draw on the tkinter Canvas using turtle commands.

Results are shown on the canvas immiedately after button press / drawing command

Copyright 2018-2026 PySimpleGUI. All rights reserved.

"""

layout = [[sg.Text('My layout')],

[sg.Canvas(size=(800, 800), key='-canvas-')],

[sg.Button('F'), sg.Button('B'), sg.Button('L'), sg.Button('R')],

[sg.Button('Spiral'), sg.Button('Inside Out'), sg.Button('Circles')]]

window = sg.Window('My new window', layout, finalize=True)

canvas = window['-canvas-'].TKCanvas

a_turtle = turtle.RawTurtle(canvas)

a_turtle.pencolor("#ff0000") # Red

a_turtle.penup()

a_turtle.pendown()

while True: # Event Loop

event, values = window.read()

if event == sg.WIN_CLOSED:

break

if event == 'F':

a_turtle.forward(100)

elif event == 'B':

a_turtle.back(100)

elif event == 'L':

a_turtle.left(90)

elif event == 'R':

a_turtle.right(90)

elif event == 'Spiral':

canvas.config(bg='light green')

a_turtle.color("blue")

def sqrfunc(size):

for i in range(4):

a_turtle.fd(size)

a_turtle.left(90)

size = size - 5

sqrfunc(146)

sqrfunc(126)

sqrfunc(106)

sqrfunc(86)

sqrfunc(66)

sqrfunc(46)

sqrfunc(26)

elif event == 'Inside Out':

canvas.config(bg="light green")

a_turtle.color("blue")

def sqrfunc(size):

for i in range(4):

a_turtle.fd(size)

a_turtle.left(90)

size = size + 5

sqrfunc(6)

sqrfunc(26)

sqrfunc(46)

sqrfunc(66)

sqrfunc(86)

sqrfunc(106)

sqrfunc(126)

sqrfunc(146)

elif event == 'Circles':

a_turtle.speed(0)

for i in range(400):

a_turtle.circle(2 * i*.25)

a_turtle.circle(-2 * i*.25)

a_turtle.left(i)

window.close()