X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/c1755a26b0576dab27d4eb72371a5b838d0c3116..ab8ffbde2df33d9c699e029ba613d2b014ba44b8:/apps/picture/models.py?ds=sidebyside diff --git a/apps/picture/models.py b/apps/picture/models.py index af691f8ae..705025a7f 100644 --- a/apps/picture/models.py +++ b/apps/picture/models.py @@ -1,14 +1,87 @@ -from django.db import models +from django.db import models, transaction import catalogue.models -from catalogue.fields import OverwritingFileField +from django.db.models import permalink +from sorl.thumbnail import ImageField from django.conf import settings from django.core.files.storage import FileSystemStorage -from django.utils.translation import ugettext_lazy as _ +from django.utils.datastructures import SortedDict +from django.template.loader import render_to_string +from django.utils.safestring import mark_safe +from django.core.cache import get_cache +from catalogue.utils import split_tags, related_tag_name +from django.utils.safestring import mark_safe +from fnpdjango.utils.text.slughifi import slughifi +from picture import tasks +from StringIO import StringIO +import jsonfield +import itertools +import logging +from sorl.thumbnail import get_thumbnail, default +from .engine import CustomCroppingEngine + +from PIL import Image + +from django.utils.translation import get_language, ugettext_lazy as _ from newtagging import managers from os import path -picture_storage = FileSystemStorage(location=path.join(settings.MEDIA_ROOT, 'pictures'), base_url=settings.MEDIA_URL + "pictures/") +permanent_cache = get_cache('permanent') + +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', related_name='areas') + area = jsonfield.JSONField(_('area'), default={}, editable=False) + kind = models.CharField(_('kind'), max_length=10, blank=False, + null=False, db_index=True, + choices=(('thing', _('thing')), + ('theme', _('theme')))) + + objects = models.Manager() + tagged = managers.ModelTaggedItemManager(catalogue.models.Tag) + tags = managers.TagDescriptor(catalogue.models.Tag) + + @classmethod + def rectangle(cls, picture, kind, coords): + pa = PictureArea() + pa.picture = picture + pa.kind = kind + pa.area = coords + return pa + + def reset_short_html(self): + if self.id is None: + return + + cache_key = "PictureArea.short_html/%d/%s" + for lang, langname in settings.LANGUAGES: + permanent_cache.delete(cache_key % (self.id, lang)) + + + def short_html(self): + if self.id: + cache_key = "PictureArea.short_html/%d/%s" % (self.id, get_language()) + short_html = permanent_cache.get(cache_key) + else: + short_html = None + + if short_html is not None: + return mark_safe(short_html) + else: + theme = self.tags.filter(category='theme') + theme = theme and theme[0] or None + thing = self.tags.filter(category='thing') + thing = thing and thing[0] or None + area = self + short_html = unicode(render_to_string( + 'picture/picturearea_short.html', locals())) + if self.id: + permanent_cache.set(cache_key, short_html) + return mark_safe(short_html) class Picture(models.Model): @@ -19,10 +92,22 @@ class Picture(models.Model): title = models.CharField(_('title'), max_length=120) slug = models.SlugField(_('slug'), max_length=120, db_index=True, unique=True) sort_key = models.CharField(_('sort key'), max_length=120, db_index=True, editable=False) + sort_key_author = models.CharField(_('sort key by author'), max_length=120, db_index=True, editable=False, default=u'') created_at = models.DateTimeField(_('creation date'), auto_now_add=True, db_index=True) changed_at = models.DateTimeField(_('creation date'), auto_now=True, db_index=True) xml_file = models.FileField('xml_file', upload_to="xml", storage=picture_storage) - image_file = models.FileField(_('image_file'), upload_to="images", storage=picture_storage) + image_file = ImageField(_('image_file'), upload_to="images", storage=picture_storage) + html_file = models.FileField('html_file', upload_to="html", storage=picture_storage) + areas_json = jsonfield.JSONField(_('picture areas JSON'), default={}, editable=False) + extra_info = jsonfield.JSONField(_('extra information'), default={}) + culturepl_link = models.CharField(blank=True, max_length=240) + wiki_link = models.CharField(blank=True, max_length=240) + + _related_info = jsonfield.JSONField(blank=True, null=True, editable=False) + + 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) @@ -43,44 +128,317 @@ class Picture(models.Model): ret = super(Picture, self).save(force_insert, force_update) + if reset_short_html: + self.reset_short_html() + return ret def __unicode__(self): return self.title + @permalink + def get_absolute_url(self): + return ('picture.views.picture_detail', [self.slug]) + @classmethod - def from_xml_file(cls, xml_file, images_path=None, overwrite=False): + 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 + 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)) + close_image_file = True if not isinstance(xml_file, File): xml_file = File(open(xml_file)) close_xml_file = True + try: # use librarian to parse meta-data - picture_xml = WLPicture.from_file(xml_file) + 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) if not created and not overwrite: raise Picture.AlreadyExists('Picture %s already exists' % picture_xml.slug) - picture.title = picture_xml.picture_info.title + picture.areas.all().delete() + picture.title = unicode(picture_xml.picture_info.title) + picture.extra_info = picture_xml.picture_info.to_dict() + + picture_tags = set(catalogue.models.Tag.tags_from_info(picture_xml.picture_info)) + motif_tags = set() + thing_tags = set() + + area_data = {'themes':{}, 'things':{}} + + 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: + objname = part['object'] + tag, created = catalogue.models.Tag.objects.get_or_create(slug=slughifi(objname), category='thing') + if created: + tag.name = objname + tag.sort_key = sortify(tag.name) + tag.save() + #thing_tags.add(tag) + area_data['things'][tag.slug] = { + 'object': part['object'], + 'coords': part['coords'], + } + area = PictureArea.rectangle(picture, 'thing', part['coords']) + area.save() + _tags = set() + _tags.add(tag) + area.tags = _tags + else: + _tags = set() + for motif in part['themes']: + tag, created = catalogue.models.Tag.objects.get_or_create(slug=slughifi(motif), category='theme') + if created: + tag.name = motif + tag.sort_key = sortify(tag.name) + tag.save() + #motif_tags.add(tag) + _tags.add(tag) + area_data['themes'][tag.slug] = { + 'theme': motif, + 'coords': part['coords'] + } - picture.tags = catalogue.models.Tag.tags_from_info(picture_xml.picture_info) + logging.debug("coords for theme: %s" % part['coords']) + area = PictureArea.rectangle(picture, 'theme', part['coords']) + area.save() + area.tags = _tags.union(picture_tags) - img = picture_xml.image_file() - try: - picture.image_file.save(path.basename(picture_xml.image_path), File(img)) - finally: - img.close() + picture.tags = picture_tags.union(motif_tags).union(thing_tags) + picture.areas_json = 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) + picture.width, picture.height = modified.size + + modified_file = StringIO() + modified.save(modified_file, format='png', 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) + + except Exception, ex: + logging.exception("Exception during import, rolling back") + transaction.rollback() + raise ex + finally: if close_xml_file: xml_file.close() + if close_image_file: + image_file.close() + + transaction.commit() + return picture + + @classmethod + def crop_to_frame(cls, wlpic, image_file): + img = Image.open(image_file) + if wlpic.frame is None: + return img + img = img.crop(itertools.chain(*wlpic.frame)) + return img + + @classmethod + def picture_list(cls, filter=None): + """Generates a hierarchical listing of all pictures + Pictures are optionally filtered with a test function. + """ + + pics = cls.objects.all().order_by('sort_key')\ + .only('title', 'slug', 'image_file') + + if filter: + pics = pics.filter(filter).distinct() + + pics_by_author = SortedDict() + orphans = [] + for tag in catalogue.models.Tag.objects.filter(category='author'): + pics_by_author[tag] = [] + + for pic in pics.iterator(): + authors = list(pic.tags.filter(category='author')) + if authors: + for author in authors: + pics_by_author[author].append(pic) + else: + orphans.append(pic) + + return pics_by_author, orphans + + @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 reset_short_html(self): + if self.id is None: + return + + type(self).objects.filter(pk=self.pk).update(_related_info=None) + for area in self.areas.all().iterator(): + area.reset_short_html() + + try: + author = self.tags.filter(category='author')[0].sort_key + except IndexError: + author = u'' + type(self).objects.filter(pk=self.pk).update(sort_key_author=author) + + cache_key = "Picture.short_html/%d/%s" + for lang, langname in settings.LANGUAGES: + permanent_cache.delete(cache_key % (self.id, lang)) + + def short_html(self): + if self.id: + cache_key = "Picture.short_html/%d/%s" % (self.id, get_language()) + short_html = get_cache('permanent').get(cache_key) + else: + short_html = None + + if short_html is not None: + return mark_safe(short_html) + else: + tags = self.tags.filter(category__in=('author', 'kind', 'epoch', 'genre')) + tags = split_tags(tags) + + short_html = unicode(render_to_string( + 'picture/picture_short.html', + {'picture': self, 'tags': tags})) + + if self.id: + get_cache('permanent').set(cache_key, short_html) + return mark_safe(short_html) + + def pretty_title(self, html_links=False): + picture = self + # TODO Add translations (related_tag_info) + names = [(tag.name, + catalogue.models.Tag.create_url('author', tag.slug)) + for tag in self.tags.filter(category='author')] + names.append((self.title, self.get_absolute_url())) + + if html_links: + names = ['%s' % (tag[1], tag[0]) for tag in names] + else: + names = [tag[0] for tag in names] + return ', '.join(names) + + def related_info(self): + """Keeps info about related objects (tags) in cache field.""" + if self._related_info is not None: + return self._related_info + else: + rel = {'tags': {}} + + tags = self.tags.filter(category__in=( + 'author', 'kind', 'genre', 'epoch')) + tags = split_tags(tags) + for category in tags: + cat = [] + for tag in tags[category]: + tag_info = {'slug': tag.slug, 'name': tag.name} + for lc, ln in settings.LANGUAGES: + tag_name = getattr(tag, "name_%s" % lc) + if tag_name: + tag_info["name_%s" % lc] = tag_name + cat.append(tag_info) + rel['tags'][category] = cat + + + if self.pk: + type(self).objects.filter(pk=self.pk).update(_related_info=rel) + return rel + + # copied from book.py, figure out + def related_themes(self): + # self.theme_counter hides a computation, so a line below actually makes sense + theme_counter = self.theme_counter + picture_themes = list(catalogue.models.Tag.objects.filter(pk__in=theme_counter.keys())) + for tag in picture_themes: + tag.count = theme_counter[tag.pk] + return picture_themes + + def reset_tag_counter(self): + if self.id is None: + return + + cache_key = "Picture.tag_counter/%d" % self.id + permanent_cache.delete(cache_key) + if self.parent: + self.parent.reset_tag_counter() + + @property + def tag_counter(self): + if self.id: + cache_key = "Picture.tag_counter/%d" % self.id + tags = permanent_cache.get(cache_key) + else: + tags = None + + if tags is None: + tags = {} + # do we need to do this? there are no children here. + for tag in self.tags.exclude(category__in=('book', 'theme', 'thing', 'set')).order_by().iterator(): + tags[tag.pk] = 1 + + if self.id: + permanent_cache.set(cache_key, tags) + return tags + + def reset_theme_counter(self): + if self.id is None: + return + + cache_key = "Picture.theme_counter/%d" % self.id + permanent_cache.delete(cache_key) + + @property + def theme_counter(self): + if self.id: + cache_key = "Picture.theme_counter/%d" % self.id + tags = permanent_cache.get(cache_key) + else: + tags = None + + if tags is None: + tags = {} + for area in PictureArea.objects.filter(picture=self).order_by().iterator(): + for tag in area.tags.filter(category__in=('theme','thing')).order_by().iterator(): + tags[tag.pk] = tags.get(tag.pk, 0) + 1 + + if self.id: + permanent_cache.set(cache_key, tags) + return tags