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[wolnelektury.git] / apps / picture / models.py
diff --git a/apps/picture/models.py b/apps/picture/models.py
index c34b39a..ee2b4e0 100644 (file)
--- a/apps/picture/models.py
+++ b/apps/picture/models.py
@@ -1,22 +1,70 @@
-from django.db import models
+# -*- coding: utf-8 -*-
+# 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 django.db.models import permalink
 from sorl.thumbnail import ImageField
 from django.conf import settings
 import catalogue.models
 from django.db.models import permalink
 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.utils.datastructures import SortedDict
 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 get_cache
-from catalogue.utils import split_tags
-from django.utils.safestring import mark_safe
 from fnpdjango.utils.text.slughifi import slughifi
 from fnpdjango.utils.text.slughifi import slughifi
+from ssify import flush_ssi_includes
+from picture import tasks
+from StringIO import StringIO
+import jsonfield
+import itertools
+import logging
+
+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)
+    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 = coords
+        return pa
+
+    def flush_includes(self, languages=True):
+        if not languages:
+            return
+        if languages is True:
+            languages = [lc for (lc, _ln) in settings.LANGUAGES]
+        flush_ssi_includes([
+            template % (self.pk, lang)
+            for template in [
+                '/katalog/pa/%d/short.%s.html',
+                ]
+            for lang in languages
+            ])
 
 
 class Picture(models.Model):
 
 
 class Picture(models.Model):
@@ -24,16 +72,29 @@ class Picture(models.Model):
     Picture resource.
 
     """
     Picture resource.
 
     """
-    title       = models.CharField(_('title'), max_length=120)
+    title       = models.CharField(_('title'), max_length=32767)
     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)
     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  = ImageField(_('image_file'), upload_to="images", storage=picture_storage)
     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  = 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)
+    tag_relations = GenericRelation(catalogue.models.Tag.intermediary_table_model)
+
+    short_html_url_name = 'picture_short'
 
     class AlreadyExists(Exception):
         pass
 
     class AlreadyExists(Exception):
         pass
@@ -44,15 +105,18 @@ class Picture(models.Model):
         verbose_name = _('picture')
         verbose_name_plural = _('pictures')
 
         verbose_name = _('picture')
         verbose_name_plural = _('pictures')
 
-    def save(self, force_insert=False, force_update=False, reset_short_html=True, **kwargs):
+    def save(self, force_insert=False, force_update=False, **kwargs):
         from sortify import sortify
 
         from sortify import sortify
 
-        self.sort_key = sortify(self.title)
+        self.sort_key = sortify(self.title)[:120]
 
 
-        ret = super(Picture, self).save(force_insert, force_update)
+        try:
+            author = self.tags.filter(category='author')[0].sort_key
+        except IndexError:
+            author = u''
+        self.sort_key_author = author
 
 
-        if reset_short_html:
-            self.reset_short_html()
+        ret = super(Picture, self).save(force_insert, force_update)
 
         return ret
 
 
         return ret
 
@@ -64,7 +128,7 @@ 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 +140,7 @@ 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))
@@ -91,46 +152,137 @@ class Picture(models.Model):
 
         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)
+            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)
 
             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()
             motif_tags = set()
-            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 created:
-                        tag.name = motif
-                        tag.sort_key = sortify(tag.name)
-                        tag.save()
-                    motif_tags.add(tag)
+            thing_tags = set()
+
+            area_data = {'themes':{}, 'things':{}}
 
 
-            picture.tags = catalogue.models.Tag.tags_from_info(picture_xml.picture_info) + \
-                list(motif_tags)
+            # 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().capitalize()
+                        tag, created = catalogue.models.Tag.objects.get_or_create(slug=slughifi(objname), category='thing')
+                        if created:
+                            tag.name = objname
+                            setattr(tag, 'name_%s' % lang, tag.name)
+                            tag.sort_key = sortify(tag.name)
+                            tag.save()
+                        #thing_tags.add(tag)
+                        area_data['things'][tag.slug] = {
+                            'object': objname,
+                            'coords': part['coords'],
+                            }
+
+                        _tags.add(tag)
+                    area = PictureArea.rectangle(picture, 'thing', part['coords'])
+                    area.save()
+                    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=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.union(picture_tags)
+
+            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()
 
 
             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)
+            modified = cls.add_source_note(picture_xml, modified)
+
+            picture.width, picture.height = modified.size
+
+            modified_file = StringIO()
+            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()
 
             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 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
+
     @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
@@ -167,29 +319,32 @@ class Picture(models.Model):
             self._info = info
         return self._info
 
             self._info = info
         return self._info
 
-    def reset_short_html(self):
-        if self.id is None:
-            return
-
-        cache_key = "Picture.short_html/%d" % (self.id)
-        get_cache('permanent').delete(cache_key)
-
-    def short_html(self):
-        if self.id:
-            cache_key = "Picture.short_html/%d" % (self.id)
-            short_html = get_cache('permanent').get(cache_key)
-        else:
-            short_html = None
+    def pretty_title(self, html_links=False):
+        picture = self
+        names = [(tag.name, tag.get_absolute_url())
+                 for tag in self.tags.filter(category='author')]
+        names.append((self.title, self.get_absolute_url()))
 
 
-        if short_html is not None:
-            return mark_safe(short_html)
+        if html_links:
+            names = ['<a href="%s">%s</a>' % (tag[1], tag[0]) for tag in names]
         else:
         else:
-            tags = self.tags.filter(category__in=('author', 'kind', 'epoch'))
-            tags = split_tags(tags)
+            names = [tag[0] for tag in names]
+        return ', '.join(names)
 
 
-            short_html = unicode(render_to_string('picture/picture_short.html',
-                {'picture': self, 'tags': tags}))
+    def related_themes(self):
+        return catalogue.models.Tag.objects.usage_for_queryset(
+            self.areas.all(), counts=True).filter(category__in=('theme', 'thing'))
 
 
-            if self.id:
-                get_cache('permanent').set(cache_key, short_html)
-            return mark_safe(short_html)
+    def flush_includes(self, languages=True):
+        if not languages:
+            return
+        if languages is True:
+            languages = [lc for (lc, _ln) in settings.LANGUAGES]
+        flush_ssi_includes([
+            template % (self.pk, lang)
+            for template in [
+                '/katalog/p/%d/short.%s.html',
+                '/katalog/p/%d/mini.%s.html',
+                ]
+            for lang in languages
+            ])