mirror of
https://github.com/jazzband/django-avatar.git
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810ce3f8e4
git-svn-id: http://django-avatar.googlecode.com/svn/trunk@19 c76b2324-5f53-0410-85ac-b1078a54aeeb
82 lines
No EOL
2.8 KiB
Python
82 lines
No EOL
2.8 KiB
Python
import re
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import datetime
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import os.path
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from django.db import models
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from django.conf import settings
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from django.contrib.auth.models import User
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from django.core.files.storage import default_storage
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from django.utils.translation import ugettext as _
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try:
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from hashlib import md5
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except ImportError:
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from md5 import new as md5
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try:
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from PIL import ImageFile
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except ImportError:
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import ImageFile
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try:
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from PIL import Image
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except ImportError:
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import Image
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WIDTH_HEIGHT_RE = re.compile(r'\[(\d+)x(\d+)\]')
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AUTO_GENERATE_AVATAR_SIZES = getattr(settings, 'AUTO_GENERATE_AVATAR_SIZES', (80,))
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AVATAR_RESIZE_METHOD = getattr(settings, 'AVATAR_RESIZE_METHOD', Image.ANTIALIAS)
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def avatar_file_path(instance=None, filename=None):
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return 'avatars/%s/[%sx%s]%s' % (instance.user.username,
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instance.avatar.width, instance.avatar.height, filename)
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class Avatar(models.Model):
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email_hash = models.CharField(max_length=128, blank=True)
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user = models.ForeignKey(User)
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primary = models.BooleanField(default=False)
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avatar = models.ImageField(upload_to=avatar_file_path, blank=True)
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date_uploaded = models.DateTimeField(default=datetime.datetime.now)
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def __unicode__(self):
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return _(u'Avatar for %s' % self.user)
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def save(self):
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self.email_hash = md5(self.user.email).hexdigest().lower()
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if self.primary:
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avatars = Avatar.objects.filter(user=self.user, primary=True)
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avatars.update(primary=False)
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super(Avatar, self).save()
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def thumbnail_exists(self, size):
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if size in AUTO_GENERATE_AVATAR_SIZES:
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return True
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new_path_fragment = '[%sx%s]' % (size, size)
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path = WIDTH_HEIGHT_RE.sub(new_path_fragment, self.avatar.path)
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return default_storage.exists(path)
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def create_thumbnail(self, size):
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orig = default_storage.open(self.avatar.path, 'rb').read()
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p = ImageFile.Parser()
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p.feed(orig)
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try:
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image = p.close()
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except IOError:
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return # What should we do here? Render a "sorry, didn't work" img?
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(w, h) = image.size
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if w > h:
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diff = (w - h) / 2
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image = image.crop((diff, 0, w - diff, h))
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else:
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diff = (h - w) / 2
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image = image.crop((0, diff, w, h - diff))
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image = image.resize((size, size), AVATAR_RESIZE_METHOD)
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thumb = default_storage.open(self.avatar_path(size), 'wb')
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image.save(thumb, "JPEG")
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def avatar_url(self, size):
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new_url_fragment = '[%sx%s]' % (size, size)
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return WIDTH_HEIGHT_RE.sub(new_url_fragment, self.avatar.url)
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def avatar_path(self, size):
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new_path_fragment = '[%sx%s]' % (size, size)
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return WIDTH_HEIGHT_RE.sub(new_path_fragment, self.avatar.path) |