Pygpoint 4: a blackboard for the presentation

In case you need to draw something while you are presenting, you can use this blackboard that I made with a script sometime ago, calling it when you press the space bar.

The code for the presentation is this. The code for the blackboard will follow. Put the two files in the same directory.

# load a spreadsheet
import pygame
import sys
from glob import glob
import os


def init():
    "Load images and set the screen to fit them"
    global images
    global screen
    global clock

    images = [pygame.image.load(png) for png in glob("images01\\*.png")]
    width = images[0].get_rect().width
    height = images[0].get_rect().height
    screen = pygame.display.set_mode((width, height))
    clock = pygame.time.Clock()



counter = 0
init()
def go_forward():
    global counter, images

    if counter < len(images) - 1:
        counter += 1


def go_back():
    global counter
    if counter > 0:
        counter -= 1
    else:
        counter = 0


loop = 1
while loop:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            loop = 0
        elif event.type == pygame.MOUSEBUTTONDOWN:
            pos = pygame.mouse.get_pos()
            print(pos)
            if pos[0] > images[0].get_rect().width // 2:
                go_forward()
            else:
                go_back()
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_RIGHT:
                go_forward()
            elif event.key == pygame.K_LEFT:
                go_back()
            elif event.key == pygame.K_SPACE:
                os.startfile("draw6.py")

    screen.fill((0,0,0))
    screen.blit(images[counter], (0, 0))
    pygame.display.flip()
    clock.tick(10)

pygame.quit()
sys.exit()

The draw6.py file to draw on the screen

from PIL import Image
import pygame
import glob
import os
from random import choice
import tkinter as tk
from tkinter import messagebox
#from pygame.locals import *

pygame.init()
screen2 = pygame.display.set_mode((800,600))
pygame.display.set_caption("PyDraw - Press h for help")
clock = pygame.time.Clock()

w = 10
loop = True
press = False
color = "white"
cnt = 0

def delete_images():
    root = tk.Tk()
    root.withdraw()
    x = messagebox.askquestion("Do you want to delete all the images?")
    if x == "yes":
        [os.remove(png) for png in glob.glob("*png")]

BLACK = (0, 0, 0)
blue = (0,0,255)
yellow = (0,255,0)
red = (255,0,0)
color = (255,255,255)
#pygame.mouse.set_cursor((8,8),(0,0),(0,0,0,0,0,0,0,0),(0,0,0,0,0,0,0,0))
pygame.mouse.set_cursor((16, 19), (0, 0), (128, 0, 192, 0, 160, 0, 144, 0, 136, 0, 132, 0, 130, 0, 129, 0, 128, 128, 128, 64, 128, 32, 128, 16, 129, 240, 137, 0, 148, 128, 164, 128, 194, 64, 2, 64, 1, 128), (128, 0, 192, 0, 224, 0, 240, 0, 248, 0, 252, 0, 254, 0, 255, 0, 255, 128, 255, 192, 255, 224, 255, 240, 255, 240, 255, 0, 247, 128, 231, 128, 195, 192, 3, 192, 1, 128))
#mouse_cursor = pygame.image.load('brush.png')
drawing = False
last_pos = None
while loop:
    # screen2.fill(pygame.Color(0, 0, 0))
    try:
        #pygame.mouse.set_visible(False)
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                loop = False
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_b:
                    color = blue
                elif event.key == pygame.K_y:
                    color = yellow
                elif event.key == pygame.K_e:
                    delete_images()
                elif event.key == pygame.K_UP:
                    w += 3
                elif event.key == pygame.K_DOWN:
                    w -= 3
                elif event.key == pygame.K_h:
                    root = tk.Tk()
                    root.withdraw()
                    messagebox.showinfo("Help","""
Use themousewheel to have a bigger or smaller trace\n
Use 'e' to erase all the images you saved\n
Press b, y or r w for colors
\nd to delete the screes
\ns to save screen2 and g to make a gif
""")
                elif event.key == pygame.K_r:
                    color = red
                elif event.key == pygame.K_r:
                    color = red
                elif event.key == pygame.K_w:
                    color = (255,255,255)
                elif event.key == pygame.K_d:
                    screen2.fill(pygame.Color(0, 0, 0))
                elif event.key == pygame.K_s:
                    if cnt < 10:
                        pygame.image.save(screen2, f"screen2shot0{cnt}.png")
                    else:
                        pygame.image.save(screen2, f"screen2shot{cnt}.png")
                    cnt += 1
                elif event.key == pygame.K_g:
                        frames = []
                        imgs = glob.glob("*.png")
                        for i in imgs:
                            new_frame = Image.open(i)
                            frames.append(new_frame)

                        # Save into a GIF file that loops forever
                        frames[0].save('animated.gif', format='GIF',
                                       append_images=frames[1:],
                                       save_all=True,
                                       duration=300, loop=0)
                        os.startfile("animated.gif")

    
        # px, py = pygame.mouse.get_pos()
        # first button of the mouse pressed
        if event.type == pygame.MOUSEMOTION:
            if (drawing):
                mouse_position = pygame.mouse.get_pos()
                if last_pos is not None:
                    pygame.draw.line(screen2, color, last_pos, mouse_position, w)
                last_pos = mouse_position
        elif event.type == pygame.MOUSEBUTTONUP:
            mouse_position = (0, 0)
            drawing = False
            last_pos = None
        elif event.type == pygame.MOUSEBUTTONDOWN:
            drawing = True

        if event.type == 6:
            if event.button == 4:
                if w < 20:
                    w += 1 
                print(event.type)
            elif event.button == 5:
                if w > 10:
                    w -= 1

        #screen2.blit(mouse_cursor, pygame.mouse.get_pos())
        pygame.display.update()

        clock.tick(200)
    except Exception as e:
        print(e)
        pygame.quit()
        
pygame.quit()