Prevent resizing if image is already at the right size

First, thanks for the great tool -- I scrapped my gallery implementation in
the favor of yours :)

(ver 0.5)

I just hit one issue -- if one requests size which is the same as original
image size image gets saved again in the cache which in the case of the
jpeg images cause additional loss of quality.

Quick fix is to add following after 'new_width, new_height =
photosize.size()' in create_size (models.py L220):

if (cur_width == new_width) and (cur_height == new_height):
# prevent resize if w/h are already right, just copy it with new name
    import shutil
    shutil.copy(self.get_image_filename(), getattr(self, "get_%s_path" %
photosize.name)())
    return

So original image is copied in the cache instead of re-saving.

(if needed I can re-submit this as a proper diff)

Original issue reported on code.google.com by djn...@gmail.com on 5 Dec 2007 at 3:12

google-code-export / django-photologue

Prevent resizing if image is already at the right size #9