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picture tags, areas overhaul #1
[wolnelektury.git] / apps / picture / models.py
diff --git a/apps/picture/models.py b/apps/picture/models.py
index 0217d8b..2703c80 100644 (file)
--- a/apps/picture/models.py
+++ b/apps/picture/models.py
@@ -1,4 +1,4 @@
-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
 import catalogue.models
 from django.db.models import permalink
 from sorl.thumbnail import ImageField
@@ -6,17 +6,56 @@ from django.conf import settings
 from django.core.files.storage import FileSystemStorage
 from django.utils.datastructures import SortedDict
 from django.template.loader import render_to_string
 from django.core.files.storage import FileSystemStorage
 from django.utils.datastructures import SortedDict
 from django.template.loader import render_to_string
-from django.core.cache import cache
-from catalogue.utils import split_tags
 from django.utils.safestring import mark_safe
 from django.utils.safestring import mark_safe
-from slughifi import slughifi
+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
+logging.basicConfig(level=logging.DEBUG)
+from sorl.thumbnail import get_thumbnail, default
+from .engine import CustomCroppingEngine
+
+from PIL import Image
 
 from django.utils.translation import ugettext_lazy as _
 from newtagging import managers
 from os import path
 
 
 
 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 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 short_html(self):
+        short_html = unicode(render_to_string(
+                'picture/picturearea_short.html', {'area': self}))
+        return mark_safe(short_html)
 
 
 class Picture(models.Model):
 
 
 class Picture(models.Model):
@@ -31,6 +70,15 @@ 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)
     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_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)
+
+    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)
     objects     = models.Manager()
     tagged      = managers.ModelTaggedItemManager(catalogue.models.Tag)
     tags        = managers.TagDescriptor(catalogue.models.Tag)
@@ -64,7 +112,7 @@ class Picture(models.Model):
         return ('picture.views.picture_detail', [self.slug])
 
     @classmethod
         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
         """
         Import xml and it's accompanying image file.
         If image file is missing, it will be fetched by librarian.picture.ImageStore
@@ -76,10 +124,7 @@ class Picture(models.Model):
         from librarian.picture import WLPicture, ImageStore
         close_xml_file = False
         close_image_file = False
         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 image_file is not None and not isinstance(image_file, File):
             image_file = File(open(image_file))
@@ -88,49 +133,110 @@ class Picture(models.Model):
         if not isinstance(xml_file, File):
             xml_file = File(open(xml_file))
             close_xml_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
         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:
                 raise Picture.AlreadyExists('Picture %s already exists' % picture_xml.slug)
 
 
             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()
 
             motif_tags = set()
 
             motif_tags = set()
+            thing_tags = set()
+            area_data = {'themes':{}, 'things':{}}
+
             for part in picture_xml.partiter():
             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:
                     if created:
-                        tag.name = motif
+                        tag.name = objname
                         tag.sort_key = sortify(tag.name)
                         tag.save()
                         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'],
+                        }
+                    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']
+                            }
+
+                    logging.debug("coords for theme: %s" % part['coords'])
+                    area = PictureArea.rectangle(picture, 'theme', part['coords'])
+                    area.save()
+                    area.tags = _tags
 
             picture.tags = catalogue.models.Tag.tags_from_info(picture_xml.picture_info) + \
 
             picture.tags = catalogue.models.Tag.tags_from_info(picture_xml.picture_info) + \
-                list(motif_tags)
+                list(motif_tags) + list(thing_tags)
+            picture.areas_json = area_data
 
             if image_file is not None:
                 img = image_file
             else:
                 img = picture_xml.image_file()
 
 
             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)
+            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()
 
             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()
         finally:
             if close_xml_file:
                 xml_file.close()
             if close_image_file:
                 image_file.close()
+
+        transaction.commit()
+
         return picture
 
         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
     @classmethod
     def picture_list(cls, filter=None):
         """Generates a hierarchical listing of all pictures
@@ -148,7 +254,7 @@ class Picture(models.Model):
         for tag in catalogue.models.Tag.objects.filter(category='author'):
             pics_by_author[tag] = []
 
         for tag in catalogue.models.Tag.objects.filter(category='author'):
             pics_by_author[tag] = []
 
-        for pic in pics:
+        for pic in pics.iterator():
             authors = list(pic.tags.filter(category='author'))
             if authors:
                 for author in authors:
             authors = list(pic.tags.filter(category='author'))
             if authors:
                 for author in authors:
@@ -172,24 +278,39 @@ class Picture(models.Model):
             return
 
         cache_key = "Picture.short_html/%d" % (self.id)
             return
 
         cache_key = "Picture.short_html/%d" % (self.id)
-        cache.delete(cache_key)
+        get_cache('permanent').delete(cache_key)
 
     def short_html(self):
         if self.id:
             cache_key = "Picture.short_html/%d" % (self.id)
 
     def short_html(self):
         if self.id:
             cache_key = "Picture.short_html/%d" % (self.id)
-            short_html = cache.get(cache_key)
+            short_html = get_cache('permanent').get(cache_key)
         else:
             short_html = None
 
         if short_html is not None:
             return mark_safe(short_html)
         else:
         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'))
+            tags = self.tags.filter(category__in=('author', 'kind', 'epoch', 'genre'))
             tags = split_tags(tags)
 
             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:
 
             if self.id:
-                cache.set(cache_key, short_html, catalogue.models.CACHE_FOREVER)
+                get_cache('permanent').set(cache_key, short_html)
             return mark_safe(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 = ['<a href="%s">%s</a>' % (tag[1], tag[0]) for tag in names]
+        else:
+            names = [tag[0] for tag in names]
+        return ', '.join(names)