+++ /dev/null
-# This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
-# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
-#
-from django.db import models, transaction
-import catalogue.models
-from sorl.thumbnail import ImageField
-from django.conf import settings
-from django.contrib.contenttypes.fields import GenericRelation
-from django.core.files.storage import FileSystemStorage
-from django.urls import reverse
-from slugify import slugify
-
-from catalogue.models.tag import prefetched_relations
-from catalogue.utils import split_tags
-from picture import tasks
-from wolnelektury.utils import cached_render, clear_cached_renders
-from io import BytesIO
-import itertools
-import json
-import logging
-import re
-
-from PIL import Image
-
-from newtagging import managers
-from os import path
-
-
-picture_storage = FileSystemStorage(location=path.join(
- settings.MEDIA_ROOT, 'pictures'),
- base_url=settings.MEDIA_URL + "pictures/")
-
-
-class PictureArea(models.Model):
- picture = models.ForeignKey('picture.Picture', models.CASCADE, related_name='areas')
- area = models.TextField('obszar', default='{}', editable=False)
- kind = models.CharField(
- 'typ', max_length=10, blank=False, null=False, db_index=True,
- choices=(('thing', 'przedmiot'), ('theme', 'motyw'))
- )
-
- objects = models.Manager()
- tagged = managers.ModelTaggedItemManager(catalogue.models.Tag)
- tags = managers.TagDescriptor(catalogue.models.Tag)
- tag_relations = GenericRelation(catalogue.models.Tag.intermediary_table_model)
-
- short_html_url_name = 'picture_area_short'
-
- @classmethod
- def rectangle(cls, picture, kind, coords):
- pa = PictureArea()
- pa.picture = picture
- pa.kind = kind
- pa.area = json.dumps(coords)
- return pa
-
- def get_area_json(self):
- return json.loads(self.area)
-
-
-class Picture(models.Model):
- """
- Picture resource.
-
- """
- title = models.CharField('tytuł', max_length=32767)
- slug = models.SlugField('slug', max_length=120, db_index=True, unique=True)
- sort_key = models.CharField('klucz sortowania', max_length=120, db_index=True, editable=False)
- sort_key_author = models.CharField(
- 'klucz sortowania wg autora', max_length=120, db_index=True, editable=False, default='')
- created_at = models.DateTimeField('data utworzenia', auto_now_add=True, db_index=True)
- changed_at = models.DateTimeField('data zmiany', auto_now=True, db_index=True)
- xml_file = models.FileField('plik xml', upload_to="xml", storage=picture_storage)
- image_file = ImageField('plik obrazu', upload_to="images", storage=picture_storage)
- html_file = models.FileField('plik html', upload_to="html", storage=picture_storage)
- areas_json = models.TextField('obszary w JSON', default='{}', editable=False)
- extra_info = models.TextField('dodatkowa informacja', default='{}')
- culturepl_link = models.CharField(blank=True, max_length=240)
- wiki_link = models.CharField(blank=True, max_length=240)
-
- width = models.IntegerField(null=True)
- height = models.IntegerField(null=True)
-
- objects = models.Manager()
- tagged = managers.ModelTaggedItemManager(catalogue.models.Tag)
- tags = managers.TagDescriptor(catalogue.models.Tag)
- tag_relations = GenericRelation(catalogue.models.Tag.intermediary_table_model)
-
- short_html_url_name = 'picture_short'
-
- is_picture = True
-
- class AlreadyExists(Exception):
- pass
-
- class Meta:
- ordering = ('sort_key_author', 'sort_key')
-
- verbose_name = 'obraz'
- verbose_name_plural = 'obrazy'
-
- def get_extra_info_json(self):
- return json.loads(self.extra_info or '{}')
-
- def save(self, force_insert=False, force_update=False, **kwargs):
- from sortify import sortify
-
- self.sort_key = sortify(self.title)[:120]
-
- try:
- author = self.authors().first().sort_key
- except AttributeError:
- author = ''
- self.sort_key_author = author
-
- ret = super(Picture, self).save(force_insert, force_update)
-
- return ret
-
- def __str__(self):
- return self.title
-
- def authors(self):
- return self.tags.filter(category='author')
-
- def epochs(self):
- return self.tags.filter(category='epoch')
-
- def genres(self):
- return self.tags.filter(category='genre')
-
- def kinds(self):
- return self.tags.filter(category='kind')
-
- def tag_unicode(self, category):
- relations = prefetched_relations(self, category)
- if relations:
- return ', '.join(rel.tag.name for rel in relations)
- else:
- return ', '.join(self.tags.filter(category=category).values_list('name', flat=True))
-
- def author_unicode(self):
- return self.tag_unicode('author')
-
- def tags_by_category(self):
- return split_tags(self.tags)
-
- def get_absolute_url(self):
- return reverse('picture_detail', args=[self.slug])
-
- def get_initial(self):
- try:
- return re.search(r'\w', self.title, re.U).group(0)
- except AttributeError:
- return ''
-
- def get_next(self):
- try:
- return type(self).objects.filter(sort_key__gt=self.sort_key)[0]
- except IndexError:
- return None
-
- def get_previous(self):
- try:
- return type(self).objects.filter(sort_key__lt=self.sort_key).order_by('-sort_key')[0]
- except IndexError:
- return None
-
- @classmethod
- def from_xml_file(cls, xml_file, image_file=None, image_store=None, overwrite=False):
- """
- Import xml and it's accompanying image file.
- If image file is missing, it will be fetched by librarian.picture.ImageStore
- which looks for an image file in the same directory the xml is, with extension matching
- its mime type.
- """
- from sortify import sortify
- from django.core.files import File
- from librarian.picture import WLPicture, ImageStore
- close_xml_file = False
- close_image_file = False
-
- if image_file is not None and not isinstance(image_file, File):
- image_file = File(open(image_file, 'rb'))
- close_image_file = True
-
- if not isinstance(xml_file, File):
- xml_file = File(open(xml_file))
- close_xml_file = True
-
- with transaction.atomic():
- # use librarian to parse meta-data
- if image_store is None:
- image_store = ImageStore(picture_storage.path('images'))
- picture_xml = WLPicture.from_file(xml_file, image_store=image_store)
-
- picture, created = Picture.objects.get_or_create(slug=picture_xml.slug[:120])
- if not created and not overwrite:
- raise Picture.AlreadyExists('Picture %s already exists' % picture_xml.slug)
-
- picture.areas.all().delete()
- picture.title = str(picture_xml.picture_info.title)
- picture.extra_info = json.dumps(picture_xml.picture_info.to_dict())
-
- picture_tags = set(catalogue.models.Tag.tags_from_info(picture_xml.picture_info))
- for tag in picture_tags:
- if not tag.for_pictures:
- tag.for_pictures = True
- tag.save()
-
- area_data = {'themes': {}, 'things': {}}
-
- # Treat all names in picture XML as in default language.
- lang = settings.LANGUAGE_CODE
-
- for part in picture_xml.partiter():
- if picture_xml.frame:
- c = picture_xml.frame[0]
- part['coords'] = [[p[0] - c[0], p[1] - c[1]] for p in part['coords']]
- if part.get('object', None) is not None:
- _tags = set()
- for objname in part['object'].split(','):
- objname = objname.strip()
- assert objname, 'Empty object name'
- # str.capitalize() is wrong, because it also lowers letters
- objname = objname[0].upper() + objname[1:]
- tag, created = catalogue.models.Tag.objects.get_or_create(
- slug=slugify(objname), category='thing')
- if created:
- tag.name = objname
- setattr(tag, 'name_%s' % lang, tag.name)
- tag.sort_key = sortify(tag.name)
- tag.for_pictures = True
- tag.save()
- area_data['things'][tag.slug] = {
- 'object': objname,
- 'coords': part['coords'],
- }
-
- _tags.add(tag)
- if not tag.for_pictures:
- tag.for_pictures = True
- tag.save()
- area = PictureArea.rectangle(picture, 'thing', part['coords'])
- area.save()
- # WTF thing area does not inherit tags from picture and theme area does, is it intentional?
- area.tags = _tags
- else:
- _tags = set()
- for motifs in part['themes']:
- for motif in motifs.split(','):
- tag, created = catalogue.models.Tag.objects.get_or_create(
- slug=slugify(motif), category='theme')
- if created:
- tag.name = motif
- tag.sort_key = sortify(tag.name)
- tag.for_pictures = True
- tag.save()
- # motif_tags.add(tag)
- _tags.add(tag)
- if not tag.for_pictures:
- tag.for_pictures = True
- tag.save()
- area_data['themes'][tag.slug] = {
- 'theme': motif,
- 'coords': part['coords']
- }
-
- logging.debug("coords for theme: %s" % part['coords'])
- area = PictureArea.rectangle(picture, 'theme', part['coords'])
- area.save()
- area.tags = _tags.union(picture_tags)
-
- picture.tags = picture_tags
- picture.areas_json = json.dumps(area_data)
-
- if image_file is not None:
- img = image_file
- else:
- img = picture_xml.image_file()
-
- modified = cls.crop_to_frame(picture_xml, img)
- modified = cls.add_source_note(picture_xml, modified)
-
- picture.width, picture.height = modified.size
-
- modified_file = BytesIO()
- modified.save(modified_file, format='JPEG', quality=95)
- # FIXME: hardcoded extension - detect from DC format or orginal filename
- picture.image_file.save(path.basename(picture_xml.image_path), File(modified_file))
-
- picture.xml_file.save("%s.xml" % picture.slug, File(xml_file))
- picture.save()
- tasks.generate_picture_html(picture.id)
-
- if close_xml_file:
- xml_file.close()
- if close_image_file:
- image_file.close()
-
- return picture
-
- @classmethod
- def crop_to_frame(cls, wlpic, image_file):
- img = Image.open(image_file)
- if wlpic.frame is None or wlpic.frame == [[0, 0], [-1, -1]]:
- return img
- img = img.crop(itertools.chain(*wlpic.frame))
- return img
-
- @staticmethod
- def add_source_note(wlpic, img):
- from PIL import ImageDraw, ImageFont
- from librarian import get_resource
-
- annotated = Image.new(img.mode, (img.size[0], img.size[1] + 40), (255, 255, 255))
- annotated.paste(img, (0, 0))
- annotation = Image.new('RGB', (img.size[0] * 3, 120), (255, 255, 255))
- ImageDraw.Draw(annotation).text(
- (30, 15),
- wlpic.picture_info.source_name,
- (0, 0, 0),
- font=ImageFont.truetype(get_resource("fonts/DejaVuSerif.ttf"), 75)
- )
- annotated.paste(annotation.resize((img.size[0], 40), Image.ANTIALIAS), (0, img.size[1]))
- return annotated
-
- @property
- def info(self):
- if not hasattr(self, '_info'):
- from librarian import dcparser
- from librarian import picture
- info = dcparser.parse(self.xml_file.path, picture.PictureInfo)
- self._info = info
- return self._info
-
- def pretty_title(self, html_links=False):
- names = [(tag.name, tag.get_absolute_url()) for tag in self.authors().only('name', 'category', 'slug')]
- names.append((self.title, self.get_absolute_url()))
-
- if html_links:
- names = ['<a href="%s">%s</a>' % (tag[1], tag[0]) for tag in names]
- else:
- names = [tag[0] for tag in names]
- return ', '.join(names)
-
- @cached_render('picture/picture_mini_box.html')
- def mini_box(self):
- return {
- 'picture': self,
- }
-
- def related_themes(self):
- return catalogue.models.Tag.objects.usage_for_queryset(
- self.areas.all(), counts=True).filter(category__in=('theme', 'thing'))
-
- def clear_cache(self):
- clear_cached_renders(self.mini_box)