gif.py

from os import mkdir, getcwd
from shutil import rmtree
from imageio import get_writer, imread

try:
    from PIL import Image, ImageDraw, ImageFont
    from PIL.GifImagePlugin import getheader, getdata
except ImportError:
    raise ImportError('Missing Pillow Module')
    exit

def create(string, dir_path, length: int = 1):

    def _gif(string, dir_path, length: int = 1):
        try:
            mkdir(dir_path+r'/tempdir')
        except:
            pass

        string += ' '

        for x in range(0, length):
            try:
                mkdir(dir_path+r'/tempdir/{}'.format(x))
            except:
                pass

            ctr = 0
            images = []
            fontsize = 30
            font = ImageFont.truetype("arial.ttf", fontsize)

            # string[0] + string is used to keep the gif at the first character for one frame longer to show the message clearer
            for y in range(len(string[0] + string)):
                # 30x30 is the size of emotes
                # a black background looks the most pleasing to the eye
                # TODO: Find out how to get transparency working with imageio
                img = Image.new('RGB', (30, 30), (0, 0, 0))
                d = ImageDraw.Draw(img)
                d.text((1, 1), (string[0] + string)[ctr], fill=(255, 255, 255), font=font)
                img.save(dir_path + r'/tempdir/{}/'.format(x) + str(ctr) + ".jpeg")
                images.append(Image.open(dir_path + r'/tempdir/{}/'.format(x) + str(ctr) + ".jpeg"))
                ctr += 1

            with get_writer('gif{}.gif'.format(x), mode='I', duration=0.5) as writer:
                for filename in range(0, len(string[0] + string)):
                    image = imread(r'tempdir/{}/'.format(x) + str(filename) + '.jpeg')
                    writer.append_data(image)

            string = string[1:] + string[:1]

    # ImageIO uses the files until function end. Nesting functions as workaround
    _gif(string, dir_path, length)
    rmtree(r'tempdir')