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28 lines
883 B
Python
28 lines
883 B
Python
# Image utils
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from io import BytesIO
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from PIL import Image
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# from exceptions import IOError
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import PIL
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from django.core.files.base import ContentFile
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def scale_dimension(width, height, long_edge):
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if width > height:
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ratio = long_edge * 1. / width
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else:
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ratio = long_edge * 1. / height
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return int(width * ratio), int(height * ratio)
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def resize_image(im, edge, format):
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(w, h) = im.size
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(width, height) = scale_dimension(w, h, long_edge=edge)
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content = BytesIO()
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im = im.resize((width, height), PIL.Image.ANTIALIAS)
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try:
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im.save(fp=content, format=format.upper(), quality=90, optimize=True, progressive=True)
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except IOError:
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PIL.ImageFile.MAXBLOCK = im.size[0] * im.size[1]
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im.save(fp=content, format=format.upper(), quality=90, optimize=True, progressive=True)
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return ContentFile(content.getvalue())
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