Drawing

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Drawing

This Python code uses the Pygame library to create a simple drawing application with a fullscreen window. The application includes a toolbar at the top for selecting drawing tools and colors.

How to use Dwawing

Drawing Tools: The user can select between a pen and an eraser.

  • Colors: There are predefined colors such as black, red, green, blue, yellow, purple, and orange.

  • Toolbar Controls: The toolbar includes buttons for changing the brush size, clearing the screen, and quitting the application.

  • Drawing: Users can draw on the screen by clicking and dragging the mouse. The size of the brush and the color can be adjusted using the toolbar buttons.

Drawing Code

You can download to get the code and app icon, or you can copy this code to obtain the code.

import pygame
import sys


pygame.init()


WIDTH, HEIGHT = 1920, 1080
TOOLBAR_HEIGHT = 50
screen = pygame.display.set_mode((WIDTH, HEIGHT), pygame.FULLSCREEN)
pygame.display.set_caption("Drawing")


WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
RED = (255, 0, 0)
GREEN = (0, 255, 0)
BLUE = (0, 0, 255)
YELLOW = (255, 255, 0)
PURPLE = (128, 0, 128)
ORANGE = (255, 165, 0)
GRAY = (200, 200, 200)


screen.fill(WHITE)
pygame.draw.rect(screen, GRAY, (0, 0, WIDTH, TOOLBAR_HEIGHT))
drawing = False
last_pos = None
color = BLACK
radius = 5
tool = 'pen' 


def draw_line(screen, start, end, color, radius):
    dx = end[0] - start[0]
    dy = end[1] - start[1]
    distance = max(abs(dx), abs(dy))
    for i in range(distance):
        x = int(start[0] + float(i) / distance * dx)
        y = int(start[1] + float(i) / distance * dy)
        pygame.draw.circle(screen, color, (x, y), radius)

def draw_rounded_rect(surface, color, rect, radius):
  
    rect_surf = pygame.Surface(rect.size, pygame.SRCALPHA)
    

    pygame.draw.rect(rect_surf, color, (0, 0, rect.width, rect.height), border_radius=radius)
    
    
    surface.blit(rect_surf, rect.topleft)

def draw_toolbar():
    pygame.draw.rect(screen, GRAY, (0, 0, WIDTH, TOOLBAR_HEIGHT))

    pygame.draw.circle(screen, BLACK, (25, 25), 10)
    pygame.draw.line(screen, WHITE, (15, 15), (35, 35), 5)

    pygame.draw.circle(screen, BLACK, (75, 25), 10)

    pygame.draw.rect(screen, RED, (120, 10, 30, 30))

    pygame.draw.rect(screen, GREEN, (160, 10, 30, 30))

    pygame.draw.rect(screen, BLUE, (200, 10, 30, 30))

    pygame.draw.rect(screen, YELLOW, (240, 10, 30, 30))

    pygame.draw.rect(screen, PURPLE, (280, 10, 30, 30))

    pygame.draw.rect(screen, ORANGE, (320, 10, 30, 30))

    pygame.draw.rect(screen, BLACK, (360, 10, 30, 30), 2)
    pygame.draw.rect(screen, BLACK, (400, 10, 30, 30), 2)
    font = pygame.font.SysFont(None, 24)
    text_plus = font.render('+', True, BLACK)
    text_minus = font.render('--', True, BLACK)
    screen.blit(text_plus, (370, 15))
    screen.blit(text_minus, (410, 15))
    

    pygame.draw.rect(screen, BLACK, (440, 10, 30, 30), 2)
    text_clear = font.render('x', True, BLACK)
    screen.blit(text_clear, (450, 15))

  
    quit_rect = pygame.Rect(WIDTH - 100, 10, 80, 30)
    draw_rounded_rect(screen, RED, quit_rect, 15)
    font = pygame.font.SysFont(None, 24)
    text_quit = font.render('Quit', True, WHITE)
    screen.blit(text_quit, (WIDTH - 85, 15))

while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()
        elif event.type == pygame.MOUSEBUTTONDOWN:
            x, y = event.pos
            if y <= TOOLBAR_HEIGHT: 
                if 10 <= x <= 40:
                    tool = 'eraser'
                    color = WHITE
                elif 60 <= x <= 90:
                    tool = 'pen'
                    color = BLACK
                elif 120 <= x <= 150:
                    tool = 'pen'
                    color = RED
                elif 160 <= x <= 190:
                    tool = 'pen'
                    color = GREEN
                elif 200 <= x <= 230:
                    tool = 'pen'
                    color = BLUE
                elif 240 <= x <= 270:
                    tool = 'pen'
                    color = YELLOW
                elif 280 <= x <= 310:
                    tool = 'pen'
                    color = PURPLE
                elif 320 <= x <= 350:
                    tool = 'pen'
                    color = ORANGE
                elif 360 <= x <= 390:
                    radius += 1 if radius < 10 else 0
                elif 400 <= x <= 430:
                    radius -= 1 if radius > 1 else 0 
                    screen.fill(WHITE) 
                elif WIDTH - 100 <= x <= WIDTH - 20 and 10 <= y <= 40:
                    pygame.quit()
                    sys.exit()
            else:
                drawing = True
                last_pos = event.pos
        elif event.type == pygame.MOUSEBUTTONUP:
            if event.button == 1: 
                drawing = False
                last_pos = None
        elif event.type == pygame.MOUSEMOTION:
            if drawing and event.pos[1] > TOOLBAR_HEIGHT:
                if last_pos is not None:
                    draw_line(screen, last_pos, event.pos, color, radius)
                last_pos = event.pos

    draw_toolbar()
    pygame.display.flip()