blup/generators/scroll.py

#!/usr/bin/env python3

import sys
import colorsys
import blup.animation
import blup.frame
import blup.writebml
import random
import argparse
from PIL import Image, ImageDraw, ImageFont

def create_image(text):
    font = ImageFont.load('8x13-ISO8859-1.pil')
    w, h = font.getsize(text)

    img = Image.new('RGB', (w+2*22, 16))
    draw = ImageDraw.Draw(img)
    draw.text((22, (16-h)//2), text, font=font)

    return img

def scroll_image(img, delay, color):

    w, h = img.size

    dim = blup.frame.FrameDimension(22, 16, 256, 3)
    anim = blup.animation.Animation(dim)
    for c in range(w-dim.size()[0]):
        frame = blup.animation.AnimationFrame(dim, delay)
        for x in range(dim.size()[0]):
            for y in range(dim.size()[1]):
                pixcol = img.getpixel((x+c, y))
                pixcol = (pixcol[0]*color[0],
                          pixcol[1]*color[1],
                          pixcol[2]*color[2])
                frame.setPixel(x, y, pixcol)
        anim.addFrame(frame)

    return anim

def create_scrolltext(text, delay, color):
    img = create_image(text)
    return scroll_image(img, delay, color)

if __name__ == '__main__':
    parser = argparse.ArgumentParser(description='Generate scrolltext BML files')
    parser.add_argument('-d', '--delay', type=int, default=100)
    parser.add_argument('-c', '--color', default='#ffffff')
    parser.add_argument('-i', '--image', type=str)
    parser.add_argument('-t', '--text', type=str)
    parser.add_argument('output_file')
    args = parser.parse_args()

    if args.image is not None and args.text is not None:
        print('--image and --text are exclusive', file=sys.stderr)
        sys.exit(1)

    if args.color.startswith('#'):
        args.color = args.color[1:]
    r = int(args.color[0:2], 16)//255
    g = int(args.color[2:4], 16)//255
    b = int(args.color[4:6], 16)//255
    col = (r, g, b)

    if args.text:
        anim = create_scrolltext(args.text, args.delay, col)
    elif args.image:
        img = Image.open(args.image)
        img.convert(mode='RGB')
        anim = scroll_image(img, args.delay, col)
    blup.writebml.writeBml(anim, args.output_file)

'''
num = 10
horiz = True
delay = 100
for i in range(num):
    newcolor = getRandomColor(dim.depth - 1)
    horiz = not horiz
    if horiz:
        for x in range(dim.size()[0]):
            newframe = blup.animation.AnimationFrame(dim, delay)
            for y in range(dim.size()[1]):
                newframe.setPixel(x, y, newcolor)
            newanim.addFrame(newframe)
    else:
        for y in range(dim.size()[1]):
            newframe = blup.animation.AnimationFrame(dim, delay)
            for x in range(dim.size()[0]):
                newframe.setPixel(x, y, newcolor)
            newanim.addFrame(newframe)



blup.writebml.writeBml(newanim, '/tmp/colorwischer.bml')
'''