Mercurial > hg > cropresize
comparison cropresize/__init__.py @ 0:0a54e5bd2875
initial import of cropresive from https://svn.openplans.org/svn/standalone/cropresize
| author | k0s <k0scist@gmail.com> |
|---|---|
| date | Thu, 29 Oct 2009 18:28:13 -0400 |
| parents | |
| children | 6ec33e2ce60f |
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| -1:000000000000 | 0:0a54e5bd2875 |
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| 1 #!/usr/bin/env python | |
| 2 | |
| 3 import sys | |
| 4 from PIL import Image | |
| 5 | |
| 6 def crop_resize(image, size, exact_size=False): | |
| 7 """ | |
| 8 Crop out the proportional middle of the image and set to the desired size. | |
| 9 If the image is bigger than the sizes passed, this works as expected. | |
| 10 If the image is smaller than the sizes passed, then behavior is dictated | |
| 11 by the `exact_size` flag. If the | |
| 12 | |
| 13 """ | |
| 14 assert size[0] or size[1] | |
| 15 | |
| 16 size = list(size) | |
| 17 | |
| 18 image_ar = image.size[0]/float(image.size[1]) | |
| 19 crop = size[0] and size[1] | |
| 20 if not size[1]: | |
| 21 size[1] = int(image.size[1]*size[0]/float(image.size[0]) ) | |
| 22 if not size[0]: | |
| 23 size[0] = int(image.size[0]*size[1]/float(image.size[1]) ) | |
| 24 size_ar = size[0]/float(size[1]) | |
| 25 | |
| 26 if size[0] > image.size[0]: | |
| 27 if size[1] > image.size[1]: | |
| 28 if not exact_size: | |
| 29 return image | |
| 30 else: | |
| 31 pass | |
| 32 # raise NotImplementedError | |
| 33 elif size[1] > image.size[1]: | |
| 34 pass | |
| 35 | |
| 36 if crop: | |
| 37 if image_ar > size_ar: | |
| 38 # trim the width | |
| 39 xoffset = int(0.5*(image.size[0] - size_ar*image.size[1])) | |
| 40 image = image.crop((xoffset, 0, image.size[0]-xoffset, image.size[1])) | |
| 41 elif image_ar < size_ar: | |
| 42 # trim the height | |
| 43 yoffset = int(0.5*(image.size[1] - image.size[0]/size_ar)) | |
| 44 image = image.crop((0, yoffset, image.size[0], image.size[1] - yoffset)) | |
| 45 | |
| 46 return image.resize(size, Image.ANTIALIAS) | |
| 47 | |
| 48 def main(): | |
| 49 from optparse import OptionParser | |
| 50 parser = OptionParser() | |
| 51 parser.add_option('-W', '--width') | |
| 52 parser.add_option('-H', '--height') | |
| 53 parser.add_option('-e', '--exact-size', dest='exact', action='store_true', default=False) | |
| 54 (options, args) = parser.parse_args() | |
| 55 | |
| 56 if not args: | |
| 57 parser.print_help() | |
| 58 sys.exit() | |
| 59 | |
| 60 width = int(options.width) | |
| 61 height = int(options.height) | |
| 62 | |
| 63 for arg in args: | |
| 64 image = Image.open(arg) | |
| 65 new_image = crop_resize(image, (width, height), options.exact) | |
| 66 new_image.show() | |
| 67 | |
| 68 if __name__ == '__main__': | |
| 69 main() |