Merge branch 'obrazy' into rwd

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

diff --git a/apps/picture/models.py b/apps/picture/models.py
index 3cb1d89..705025a 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


@@ -6,18 +6,82 @@ 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 librarian import dcparser
-from slughifi import slughifi
-
-from django.utils.translation import ugettext_lazy as _
+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
 
 
 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):
 
 
 class Picture(models.Model):


@@ -28,10 +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)
     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)
     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)
+
+    _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)
     objects     = models.Manager()
     tagged      = managers.ModelTaggedItemManager(catalogue.models.Tag)
     tags        = managers.TagDescriptor(catalogue.models.Tag)


@@ -45,9 +121,6 @@ class Picture(models.Model):
         verbose_name = _('picture')
         verbose_name_plural = _('pictures')
 
         verbose_name = _('picture')
         verbose_name_plural = _('pictures')
 

-    URLID_RE = r'[a-z0-9-]+'
-    FILEID_RE = r'[a-z0-9-]+'
-

     def save(self, force_insert=False, force_update=False, reset_short_html=True, **kwargs):
         from sortify import sortify
 
     def save(self, force_insert=False, force_update=False, reset_short_html=True, **kwargs):
         from sortify import sortify
 


@@ -65,13 +138,10 @@ class Picture(models.Model):
 
     @permalink
     def get_absolute_url(self):
 
     @permalink
     def get_absolute_url(self):

-        return ('picture.views.picture_detail', [self.urlid()])
-
-    def urlid(self):
-        return self.slug
+        return ('picture.views.picture_detail', [self.slug])

 
     @classmethod
 
     @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


@@ -80,13 +150,10 @@ class Picture(models.Model):
         """
         from sortify import sortify
         from django.core.files import File
         """
         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
         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))


@@ -95,48 +162,111 @@ 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=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()

 
 

+            picture_tags = set(catalogue.models.Tag.tags_from_info(picture_xml.picture_info))

             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)
-
-            picture.tags = catalogue.models.Tag.tags_from_info(picture_xml.picture_info) + \
-                list(motif_tags)
+                    #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.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)
+            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


@@ -154,7 +284,7 @@ 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:


@@ -167,6 +297,8 @@ class Picture(models.Model):
     @property
     def info(self):
         if not hasattr(self, '_info'):
     @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
             info = dcparser.parse(self.xml_file.path, picture.PictureInfo)
             self._info = info
         return self._info


@@ -174,26 +306,139 @@ class Picture(models.Model):
     def reset_short_html(self):
         if self.id is None:
             return
     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()

 
 

-        cache_key = "Picture.short_html/%d" % (self.id)
-        cache.delete(cache_key)
+        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)
-            short_html = cache.get(cache_key)
+            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:
         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)
+
+    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