from django.db import models from django.core.urlresolvers import reverse_lazy, reverse 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): with open((settings.MEDIA_ROOT + self.file.name).encode('utf-8'), 'rb') as f: im = Image.open(BytesIO(f.read())) (w, h) = im.size return (w / h) < 1 return False def can_be_edited_by(self, user): # file = SithFile.objects.filter(id=self.id).first() return user.is_in_group(settings.SITH_GROUP_SAS_ADMIN_ID)# or user.can_edit(file) def can_be_viewed_by(self, user): # file = SithFile.objects.filter(id=self.id).first() return self.can_be_edited_by(user) or (self.is_in_sas and self.is_moderated and user.was_subscribed())# or user.can_view(file) 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 get_absolute_url(self): return reverse('sas:picture', kwargs={'picture_id': self.id}) def generate_thumbnails(self, overwrite=False): 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, 1200, self.mime_type.split('/')[-1]) if overwrite: self.file.delete() self.thumbnail.delete() self.compressed.delete() 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']: name = self.__getattribute__(attr).name with open((settings.MEDIA_ROOT + name).encode('utf-8'), 'r+b') as file: if file: im = Image.open(BytesIO(file.read())) file.seek(0) im = im.rotate(degree, expand=True) im.save(fp=file, format=self.mime_type.split('/')[-1].upper(), quality=90, optimize=True, progressive=True) def get_next(self): if self.is_moderated: return self.parent.children.filter(is_moderated=True, asked_for_removal=False, is_folder=False, id__gt=self.id).order_by('id').first() else: return Picture.objects.filter(id__gt=self.id, is_moderated=False, is_in_sas=True).order_by('id').first() def get_previous(self): if self.is_moderated: return self.parent.children.filter(is_moderated=True, asked_for_removal=False, is_folder=False, id__lt=self.id).order_by('id').last() else: return Picture.objects.filter(id__lt=self.id, is_moderated=False, is_in_sas=True).order_by('-id').first() class Album(SithFile): class Meta: proxy = True @property def children_pictures(self): return Picture.objects.filter(parent=self, is_folder=False) @property def children_albums(self): return Album.objects.filter(parent=self, is_folder=True) def can_be_edited_by(self, user): # file = SithFile.objects.filter(id=self.id).first() return user.is_in_group(settings.SITH_GROUP_SAS_ADMIN_ID)# or user.can_edit(file) def can_be_viewed_by(self, user): # file = SithFile.objects.filter(id=self.id).first() return self.can_be_edited_by(user) or (self.is_in_sas and self.is_moderated and user.was_subscribed())# or user.can_view(file) def get_absolute_url(self): return reverse('sas:album', kwargs={'album_id': self.id}) def get_download_url(self): return reverse('sas:download', kwargs={'picture_id': self.id}) def generate_thumbnail(self): p = self.children_pictures.order_by('?').first() or self.children_albums.exclude(file=None).exclude(file="").order_by('?').first() if p and p.file: im = Image.open(BytesIO(p.file.read())) self.file = resize_image(im, 200, "jpeg") self.file.name = self.name + '/thumb.jpg' self.save() 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'] def __str__(self): return self.user.get_display_name() + " - " + str(self.picture)