Script that generates solid-color test images for when RGBA should really be BGRA...

draw-color-test-image.py

#! /usr/bin/env python
"""
draw-color-test-image.py
Bryan Cattle
Draws a solid color test image using the supplied parameters
"""

import click
from PIL import Image

@click.command()
@click.option('--format', default='PNG', help='Format to save the image file in, e.g. "PNG"')
@click.option('--color', default='red', help='Color to fill the output image with, e.g. "red"')
@click.option('--size', default='480x640', help='Size of the output image to generate, e.g. "480x640"')
@click.option('--save/--no-save', default=True, help='Save the image, True by default')
@click.option('--preview/--no-preview', default=False, help='Show a preview of the saved image')
def generate_test_image(format, color, size, save, preview):
    """
    Generates a test pan image of the specifed size, having a grid of a certain aspect ratio
    EXAMPLES:\n
      ./draw-photopan-test-image.py --preview\n
      ./draw-photopan-test-image.py --size 3264x2448 --preview
    """

    # Size is expected to be a string like "640x480"
    a, b = size.split("x")
    img_width = int(a)
    img_height = int(b)

#    im = Image.new('RGB', (img_width, img_height), (255, 255, 255, 0))
    im = Image.new('RGB', (img_width, img_height), color)

    if save:
        im.save('test-color-image-%s-%d.%s' % (color, img_width, format.lower()), format.upper())

    if preview or not save:
        im.show()


if __name__ == '__main__':
    generate_test_image()