from django.db import models from django.conf import settings from django.core.urlresolvers import reverse from django.utils.translation import ugettext_lazy as _ from django.core.files.base import ContentFile from PIL import Image from io import BytesIO from core.models import SithFile, User from core.utils import resize_image, exif_auto_rotate class Picture(SithFile): class Meta: proxy = True @property def is_vertical(self): im = Image.open(BytesIO(self.file.read())) (w, h) = im.size return (w / h) < 1 def can_be_edited_by(self, user): return user.is_in_group(settings.SITH_SAS_ADMIN_GROUP_ID) def can_be_viewed_by(self, user): return self.can_be_edited_by(user) or (self.is_in_sas and self.is_moderated and user.is_in_group(settings.SITH_MAIN_MEMBERS_GROUP)) def get_download_url(self): return reverse('sas:download', kwargs={'picture_id': self.id}) def get_download_compressed_url(self): return reverse('sas:download_compressed', kwargs={'picture_id': self.id}) def get_download_thumb_url(self): return reverse('sas:download_thumb', kwargs={'picture_id': self.id}) def generate_thumbnails(self): im = Image.open(BytesIO(self.file.read())) try: im = exif_auto_rotate(im) except: pass file = resize_image(im, max(im.size), self.mime_type.split('/')[-1]) thumb = resize_image(im, 200, self.mime_type.split('/')[-1]) compressed = resize_image(im, 600, self.mime_type.split('/')[-1]) self.file = file self.file.name = self.name self.thumbnail = thumb self.thumbnail.name = self.name self.compressed = compressed self.compressed.name = self.name self.save() def rotate(self, degree): for attr in ['file', 'compressed', 'thumbnail']: if self.__getattribute__(attr): im = Image.open(BytesIO(self.__getattribute__(attr).read())) new_image = BytesIO() im = im.rotate(degree, expand=True) im.save(fp=new_image, format=self.mime_type.split('/')[-1].upper(), quality=90, optimize=True, progressive=True) self.__getattribute__(attr).save(self.name, ContentFile(new_image.getvalue())) self.save() def get_next(self): return self.parent.children.filter(is_moderated=True, asked_for_removal=False, is_folder=False, id__gt=self.id).order_by('id').first() def get_previous(self): return self.parent.children.filter(is_moderated=True, asked_for_removal=False, is_folder=False, id__lt=self.id).order_by('id').last() class Album(SithFile): class Meta: proxy = True def can_be_edited_by(self, user): return user.is_in_group(settings.SITH_SAS_ADMIN_GROUP_ID) def can_be_viewed_by(self, user): return self.can_be_edited_by(user) or (self.is_in_sas and self.is_moderated and user.is_in_group(settings.SITH_MAIN_MEMBERS_GROUP)) def get_absolute_url(self): return reverse('sas:album', kwargs={'album_id': self.id}) class PeoplePictureRelation(models.Model): """ The PeoplePictureRelation class makes the connection between User and Picture """ user = models.ForeignKey(User, verbose_name=_('user'), related_name="pictures", null=False, blank=False) picture = models.ForeignKey(Picture, verbose_name=_('picture'), related_name="people", null=False, blank=False) class Meta: unique_together = ['user', 'picture']