pixeledit

Attribution

Make your own pixel editing program, pages 52-55, by Mark Vanstone.

Licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported.

Blog post of Source Code.

Original Python code

# Pixel Edit
import pgzrun, pygame

mysprite = pygame.Surface([100,100])
transColour = pygame.Color(255, 0, 255)
mysprite.set_colorkey(transColour)
mysprite.fill(transColour)
mygrid = pygame.Surface([600,600])
mygrid.set_colorkey(transColour)
mygrid.fill(transColour)
for x in range(0,100):
    pygame.draw.line(mygrid,pygame.Color(100, 100, 100),(x*6,0), (x*6,600))
for y in range(0,100):
    pygame.draw.line(mygrid,pygame.Color(100, 100, 100),(0,y*6), (600,y*6))

curMouseX = 0
curMouseY = 0
drawing = False
saving = False
eraseOn = False
curColour = pygame.Color(255, 0, 0)
curTool = 2

def draw():
    screen.fill((150,150,150))
    screen.draw.filled_rect(Rect((600, 0), (800, 600)), (200, 200, 200))
    screen.draw.text("PIXELEDIT", center = (700, 30), owidth=1, ocolor=(255,255,255), color=(0,0,255) , fontsize=40)
    mylargesprite = pygame.transform.scale(mysprite, (600, 600))
    mylargesprite.set_colorkey(transColour)
    screen.blit(mylargesprite,(0,0))
    screen.blit(mysprite,(650,400))
    screen.blit(mygrid,(0,0))
    screen.blit("palette",(620,50))
    if saving == True:
        screen.blit("savebuttonhigh",(625,520))
    else:
        screen.blit("savebutton",(625,520))
    if curTool == 1:
        screen.blit("tool1high",(625,325))
    else:
        screen.blit("tool1",(625,325))
    if curTool == 2:
        screen.blit("tool2high",(675,325))
    else:
        screen.blit("tool2",(675,325))
    if eraseOn:
        screen.blit("tool3high",(725,325))
    else:
        screen.blit("tool3",(725,325))
    screen.draw.rect(Rect((650, 400), (100, 100)), (0,0,0))
    if(curMouseX < 600):
        if curTool == 1:
            if eraseOn:
                screen.draw.filled_rect(Rect((curMouseX, curMouseY), (6, 6)), pygame.Color(255, 255, 255))
            else:
                screen.draw.filled_rect(Rect((curMouseX, curMouseY), (6, 6)), curColour)
        if curTool == 2:
            if eraseOn:
                screen.draw.filled_circle((curMouseX, curMouseY), 24, pygame.Color(255, 255, 255))
            else:
                screen.draw.filled_circle((curMouseX, curMouseY), 24, curColour)

def on_mouse_move(pos):
    global curMouseX, curMouseY
    curMouseX = int(pos[0]/6)*6
    curMouseY = int(pos[1]/6)*6
    if drawing == True:
        spriteX = int(pos[0]/6)
        spriteY = int(pos[1]/6)
        if curTool == 1:
            if eraseOn:
                mysprite.set_at((spriteX,spriteY),transColour)
            else:
                mysprite.set_at((spriteX,spriteY),curColour)
        if curTool == 2:
            if eraseOn:
                pygame.draw.circle(mysprite, transColour, (spriteX, spriteY), 4, width=0)
            else:
                pygame.draw.circle(mysprite, curColour, (spriteX, spriteY), 4, width=0)

def on_mouse_down(pos):
    global drawing,curColour,curTool,saving,eraseOn
    if pos[0] < 600:
        drawing = True
        spriteX = int(pos[0]/6)
        spriteY = int(pos[1]/6)
        if curTool == 1:
            if eraseOn:
                mysprite.set_at((spriteX,spriteY),transColour)
            else:
                mysprite.set_at((spriteX,spriteY),curColour)
        if curTool == 2:
            if eraseOn:
                pygame.draw.circle(mysprite, transColour, (spriteX, spriteY), 4, width=0)
            else:
                pygame.draw.circle(mysprite, curColour, (spriteX, spriteY), 4, width=0)
    else:
        if pos[0] > 625 and pos[0] < 775 and pos[1] > 520 and pos[1] < 585:
            saving = True
            saveImage()
        if pos[0] > 620 and pos[0] < 770 and pos[1] > 50 and pos[1] < 300:
            curColour = screen.surface.get_at(pos)
        if pos[0] > 625 and pos[0] < 675 and pos[1] > 325 and pos[1] < 375:
            curTool = 1
        if pos[0] > 675 and pos[0] < 725 and pos[1] > 325 and pos[1] < 375:
            curTool = 2
        if pos[0] > 725 and pos[0] < 775 and pos[1] > 325 and pos[1] < 375:
            eraseOn = not eraseOn

def on_mouse_up(pos):
    global drawing,saving
    drawing = False
    saving = False

def saveImage():
    mysavingsprite = mysprite.convert_alpha()
    pygame.image.save(mysavingsprite,"mysprite.png")

pgzrun.go()