Fix: Uglier but supported by Chrome

[wolnelektury.git] / apps / picture / models.py

diff --git a/apps/picture/models.py b/apps/picture/models.py
index fa602e6..2707e08 100644 (file)
--- a/apps/picture/models.py
+++ b/apps/picture/models.py
@@ -1,3 +1,7 @@
+# -*- 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 django.db import models, transaction
 import catalogue.models
 from django.db.models import permalink


@@ -6,27 +10,81 @@ 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.utils.safestring import mark_safe

 from django.core.cache import get_cache
 from catalogue.utils import split_tags
 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 picture import tasks
 from StringIO import StringIO
 import jsonfield
 import itertools
 from fnpdjango.utils.text.slughifi import slughifi
 from picture import tasks
 from StringIO import StringIO
 import jsonfield
 import itertools

+import logging

 
 from PIL import Image
 
 
 from PIL import Image
 

-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import get_language, ugettext_lazy as _

 from newtagging import managers
 from os import path
 
 
 from newtagging import managers
 from os import path
 
 

+permanent_cache = get_cache('permanent')
+

 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 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):
     """
     Picture resource.
 class Picture(models.Model):
     """
     Picture resource.


@@ -35,12 +93,21 @@ 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)
     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  = ImageField(_('image_file'), upload_to="images", storage=picture_storage)
     html_file   = models.FileField('html_file', upload_to="html", 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       = jsonfield.JSONField(_('picture areas'), default={}, editable=False)
+    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)
 
     objects     = models.Manager()
     tagged      = managers.ModelTaggedItemManager(catalogue.models.Tag)


@@ -96,7 +163,7 @@ 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
             if image_store is None:
         try:
             # use librarian to parse meta-data
             if image_store is None:


@@ -107,10 +174,14 @@ class Picture(models.Model):
             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()
             thing_tags = set()
             motif_tags = set()
             thing_tags = set()

+

             area_data = {'themes':{}, 'things':{}}
 
             for part in picture_xml.partiter():
             area_data = {'themes':{}, 'things':{}}
 
             for part in picture_xml.partiter():


@@ -124,27 +195,38 @@ class Picture(models.Model):
                         tag.name = objname
                         tag.sort_key = sortify(tag.name)
                         tag.save()
                         tag.name = objname
                         tag.sort_key = sortify(tag.name)
                         tag.save()

-                    thing_tags.add(tag)
+                    #thing_tags.add(tag)

                     area_data['things'][tag.slug] = {
                         'object': part['object'],
                         'coords': part['coords'],
                         }
                     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:
                 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()
                     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)
+                        #motif_tags.add(tag)
+                        _tags.add(tag)

                         area_data['themes'][tag.slug] = {
                             'theme': motif,
                             'coords': part['coords']
                             }
 
                         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(thing_tags)
-            picture.areas = area_data
+                    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
 
             if image_file is not None:
                 img = image_file


@@ -152,15 +234,21 @@ class Picture(models.Model):
                 img = picture_xml.image_file()
 
             modified = cls.crop_to_frame(picture_xml, img)
                 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 = StringIO()
+            modified.save(modified_file, format='png', quality=95)

             # FIXME: hardcoded extension - detect from DC format or orginal filename
             # FIXME: hardcoded extension - detect from DC format or orginal filename

-            picture.image_file.save(path.basename(picture_xml.image_path), File(modified))
+            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:
 
             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"
+            logging.exception("Exception during import, rolling back")

             transaction.rollback()
             raise ex
 
             transaction.rollback()
             raise ex
 


@@ -176,13 +264,31 @@ class Picture(models.Model):
 
     @classmethod
     def crop_to_frame(cls, wlpic, image_file):
 
     @classmethod
     def crop_to_frame(cls, wlpic, image_file):

-        if wlpic.frame is None:
-            return image_file

         img = Image.open(image_file)
         img = Image.open(image_file)

+        if wlpic.frame is None:
+            return img

         img = img.crop(itertools.chain(*wlpic.frame))
         img = img.crop(itertools.chain(*wlpic.frame))

-        contents = StringIO()
-        img.save(contents, format='png', quality=95)
-        return contents
+        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(img.mode, (3000, 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((1000, 40), Image.ANTIALIAS), (0, img.size[1]))
+        return annotated

 
     @classmethod
     def picture_list(cls, filter=None):
 
     @classmethod
     def picture_list(cls, filter=None):


@@ -224,12 +330,23 @@ class Picture(models.Model):
         if self.id is None:
             return
 
         if self.id is None:
             return
 

-        cache_key = "Picture.short_html/%d" % (self.id)
-        get_cache('permanent').delete(cache_key)
+        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:
 
     def short_html(self):
         if self.id:

-            cache_key = "Picture.short_html/%d" % (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
             short_html = get_cache('permanent').get(cache_key)
         else:
             short_html = None


@@ -247,3 +364,104 @@ class Picture(models.Model):
             if self.id:
                 get_cache('permanent').set(cache_key, short_html)
             return mark_safe(short_html)
             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 = ['<a href="%s">%s</a>' % (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