-from django.db import models
+from django.db import models, transaction
import catalogue.models
from django.db.models import permalink
from sorl.thumbnail import ImageField
from catalogue.utils import split_tags
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
+
+from PIL import Image
from django.utils.translation import 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/")
+picture_storage = FileSystemStorage(location=path.join(
+ settings.MEDIA_ROOT, 'pictures'),
+ base_url=settings.MEDIA_URL + "pictures/")
class Picture(models.Model):
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 = ImageField(_('image_file'), upload_to="images", storage=picture_storage)
+ html_file = models.FileField('html_file', upload_to="html", storage=picture_storage)
+ areas = jsonfield.JSONField(_('picture areas'), default='{}', editable=False)
+
objects = models.Manager()
tagged = managers.ModelTaggedItemManager(catalogue.models.Tag)
tags = managers.TagDescriptor(catalogue.models.Tag)
return ('picture.views.picture_detail', [self.slug])
@classmethod
- def from_xml_file(cls, xml_file, image_file=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
from librarian.picture import WLPicture, ImageStore
close_xml_file = False
close_image_file = False
- # class SimpleImageStore(object):
- # def path(self_, slug, mime_type):
- # """Returns the image file. Ignores slug ad mime_type."""
- # return image_file
+
if image_file is not None and not isinstance(image_file, File):
image_file = File(open(image_file))
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,
- image_store=ImageStore(picture_storage.path('images')))
- # image_store=SimpleImageStore
+ 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:
picture.title = picture_xml.picture_info.title
motif_tags = set()
+ thing_tags = set()
+ area_data = {'themes':{}, 'things':{}}
+
for part in picture_xml.partiter():
- for motif in part['themes']:
- tag, created = catalogue.models.Tag.objects.get_or_create(slug=slughifi(motif), category='theme')
+ 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 = motif
+ tag.name = objname
tag.sort_key = sortify(tag.name)
tag.save()
- motif_tags.add(tag)
+ thing_tags.add(tag)
+ area_data['things'][tag.slug] = {
+ 'object': part['object'],
+ 'coords': part['coords'],
+ }
+ else:
+ 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)
+ area_data['themes'][tag.slug] = {
+ 'theme': motif,
+ 'coords': part['coords']
+ }
picture.tags = catalogue.models.Tag.tags_from_info(picture_xml.picture_info) + \
- list(motif_tags)
+ list(motif_tags) + list(thing_tags)
+ picture.areas = area_data
if image_file is not None:
img = image_file
else:
img = picture_xml.image_file()
- # FIXME: hardcoded extension
- picture.image_file.save(path.basename(picture_xml.image_path), File(img))
+ modified = cls.crop_to_frame(picture_xml, img)
+ # FIXME: hardcoded extension - detect from DC format or orginal filename
+ picture.image_file.save(path.basename(picture_xml.image_path), File(modified))
picture.xml_file.save("%s.xml" % picture.slug, File(xml_file))
picture.save()
+ tasks.generate_picture_html(picture.id)
+
+ except Exception, ex:
+ print "Rolling back a transaction"
+ 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):
+ if wlpic.frame is None:
+ return image_file
+ img = Image.open(image_file)
+ img = img.crop(itertools.chain(*wlpic.frame))
+ contents = StringIO()
+ img.save(contents, format='png', quality=95)
+ return contents
+
@classmethod
def picture_list(cls, filter=None):
"""Generates a hierarchical listing of all pictures
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}))
+ 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)
fnp / wolnelektury.git / blobdiff