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Add thumbnail generation

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This commit is contained in:
Skia 2016-11-20 11:56:33 +01:00
parent 71d22e367b
commit 869634d6e1
12 changed files with 104 additions and 12 deletions
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20
club/migrations/0005_auto_20161120_1149.py Normal file
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@ -0,0 +1,20 @@
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.db import migrations, models
import django.db.models.deletion
class Migration(migrations.Migration):
dependencies = [
('club', '0004_auto_20160915_1057'),
]
operations = [
migrations.AlterField(
model_name='club',
name='home',
field=models.OneToOneField(related_name='home_of_club', blank=True, on_delete=django.db.models.deletion.SET_NULL, verbose_name='home', null=True, to='core.SithFile'),
),
]

3
club/models.py
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@ -36,7 +36,8 @@ class Club(models.Model):
default=settings.SITH_GROUPS['root']['id'])
edit_groups = models.ManyToManyField(Group, related_name="editable_club", blank=True)
view_groups = models.ManyToManyField(Group, related_name="viewable_club", blank=True)
home = models.OneToOneField(SithFile, related_name='home_of_club', verbose_name=_("home"), null=True, blank=True)
home = models.OneToOneField(SithFile, related_name='home_of_club', verbose_name=_("home"), null=True, blank=True,
on_delete=models.SET_NULL)
def check_loop(self):
"""Raise a validation error when a loop is found within the parent list"""

31
core/migrations/0009_auto_20161120_1155.py Normal file
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@ -0,0 +1,31 @@
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.db import migrations, models
import django.db.models.deletion
import core.models
class Migration(migrations.Migration):
dependencies = [
('core', '0008_sithfile_asked_for_removal'),
]
operations = [
migrations.AddField(
model_name='sithfile',
name='compressed',
field=models.FileField(upload_to=core.models.get_compressed_directory, null=True, verbose_name='compressed file', blank=True),
),
migrations.AddField(
model_name='sithfile',
name='thumbnail',
field=models.FileField(upload_to=core.models.get_thumbnail_directory, null=True, verbose_name='thumbnail', blank=True),
),
migrations.AlterField(
model_name='user',
name='home',
field=models.OneToOneField(verbose_name='home', related_name='home_of', on_delete=django.db.models.deletion.SET_NULL, null=True, to='core.SithFile', blank=True),
),
]

17
core/models.py
View File

@ -115,7 +115,8 @@ class User(AbstractBaseUser):
),
)
groups = models.ManyToManyField(RealGroup, related_name='users', blank=True)
home = models.OneToOneField('SithFile', related_name='home_of', verbose_name=_("home"), null=True, blank=True)
home = models.OneToOneField('SithFile', related_name='home_of', verbose_name=_("home"), null=True, blank=True,
on_delete=models.SET_NULL)
profile_pict = models.OneToOneField('SithFile', related_name='profile_of', verbose_name=_("profile"), null=True,
blank=True, on_delete=models.SET_NULL)
avatar_pict = models.OneToOneField('SithFile', related_name='avatar_of', verbose_name=_("avatar"), null=True,
@ -491,10 +492,18 @@ class Preferences(models.Model):
def get_directory(instance, filename):
return '.{0}/{1}'.format(instance.get_parent_path(), filename)
def get_compressed_directory(instance, filename):
return '.{0}/compressed/{1}'.format(instance.get_parent_path(), filename)
def get_thumbnail_directory(instance, filename):
return '.{0}/thumbnail/{1}'.format(instance.get_parent_path(), filename)
class SithFile(models.Model):
name = models.CharField(_('file name'), max_length=256, blank=False)
parent = models.ForeignKey('self', related_name="children", verbose_name=_("parent"), null=True, blank=True)
file = models.FileField(upload_to=get_directory, verbose_name=_("file"), null=True, blank=True)
compressed = models.FileField(upload_to=get_compressed_directory, verbose_name=_("compressed file"), null=True, blank=True)
thumbnail = models.FileField(upload_to=get_thumbnail_directory, verbose_name=_("thumbnail"), null=True, blank=True)
owner = models.ForeignKey(User, related_name="owned_files", verbose_name=_("owner"))
edit_groups = models.ManyToManyField(Group, related_name="editable_files", verbose_name=_("edit group"), blank=True)
view_groups = models.ManyToManyField(Group, related_name="viewable_files", verbose_name=_("view group"), blank=True)
@ -528,6 +537,10 @@ class SithFile(models.Model):
for c in self.children.all():
c.delete()
self.file.delete()
if self.compressed:
self.compressed.delete()
if self.thumbnail:
self.thumbnail.delete()
return super(SithFile, self).delete()
def clean(self):
@ -605,7 +618,7 @@ class SithFile(models.Model):
return l
def get_parent_path(self):
return '/' + '/'.join([p.name for p in self.get_parent_list()])
return '/' + '/'.join([p.name for p in self.get_parent_list()[::-1]])
def get_display_name(self):
return self.name

2
core/utils.py
View File

@ -13,7 +13,7 @@ def scale_dimension(width, height, long_edge):
ratio = long_edge * 1. / height
return int(width * ratio), int(height * ratio)
def resize_image(im, edge, format): # TODO move that into a utils file
def resize_image(im, edge, format):
(w, h) = im.size
(width, height) = scale_dimension(w, h, long_edge=edge)
content = BytesIO()

4
core/views/files.py
View File

@ -19,7 +19,7 @@ import os
from core.models import SithFile
from core.views import CanViewMixin, CanEditMixin, CanEditPropMixin, CanCreateMixin, can_view, not_found
def send_file(request, file_id, file_class=SithFile):
def send_file(request, file_id, file_class=SithFile, file_attr="file"):
"""
Send a file through Django without loading the whole file into
memory at once. The FileWrapper will turn the file object into an
@ -35,7 +35,7 @@ def send_file(request, file_id, file_class=SithFile):
Counter.objects.filter(token=request.session['counter_token']).exists())
):
raise PermissionDenied
name = f.file.name
name = f.__getattribute__(file_attr).name
with open(settings.MEDIA_ROOT + name, 'rb') as filename:
wrapper = FileWrapper(filename)
response = HttpResponse(wrapper, content_type=f.mime_type)

6
sas/models.py
View File

@ -24,6 +24,12 @@ class Picture(SithFile):
def get_download_url(self):
return reverse('sas:download', kwargs={'picture_id': self.id})
def get_download_compressed_url(self):
return reverse('sas:download_compressed', kwargs={'picture_id': self.id})
def get_download_thumb_url(self):
return reverse('sas:download_thumb', kwargs={'picture_id': self.id})
def get_next(self):
return self.parent.children.exclude(is_moderated=False, asked_for_removal=True).filter(id__gt=self.id).order_by('id').first()

2
sas/templates/sas/album.jinja
View File

@ -28,7 +28,7 @@
{% if p.as_picture.can_be_viewed_by(user) %}
<div style="display: inline-block; border: solid 1px black; width: 9%; margin: 0.1%">
<a href="{{ url("sas:picture", picture_id=p.id) }}#pict">
<img src="{{ p.as_picture.get_download_url() }}" alt="{{ p.get_display_name() }}" style="max-width: 100%"/>
<img src="{{ p.as_picture.get_download_thumb_url() }}" alt="{{ p.get_display_name() }}" style="max-width: 100%"/>
</a>
</div>
{% endif %}

2
sas/templates/sas/moderation.jinja
View File

@ -17,7 +17,7 @@
{% endif %}
<p>
<a href="{{ url("sas:picture", picture_id=p.id) }}">
<img src="{{ url('sas:download', picture_id=p.id) }}" alt="{{ p.name }}" style="width: 100px">
<img src="{{ p.get_download_thumb_url() }}" alt="{{ p.name }}" style="width: 100px">
</a><br/>
{% trans %}Full name: {% endtrans %}{{ p.get_parent_path()+'/'+p.name }}<br/>
{% trans %}Owner: {% endtrans %}{{ p.owner.get_display_name() }}<br/>

9
sas/templates/sas/picture.jinja
View File

@ -35,21 +35,21 @@
{{ print_path(picture.parent) }} {{ picture.get_display_name() }}
<h3>{{ picture.get_display_name() }}</h3>
<div style="display: inline-block; width: 89%; background: #333;" id="pict">
<img src="{{ picture.get_download_url() }}" alt="{{ picture.get_display_name() }}" style="width: 90%; display: block; margin: auto"/>
<img src="{{ picture.get_download_compressed_url() }}" alt="{{ picture.get_display_name() }}" style="width: 90%; display: block; margin: auto"/>
</div>
<div style="display: inline-block; width: 10%; vertical-align: top;">
<div>
<div id="prev">
{% if picture.get_previous() %}
<a href="{{ url("sas:picture", picture_id=picture.get_previous().id) }}#pict">
<img src="{{ picture.get_previous().as_picture.get_download_url() }}" alt="{{ picture.get_previous().get_display_name() }}" />
<img src="{{ picture.get_previous().as_picture.get_download_thumb_url() }}" alt="{{ picture.get_previous().get_display_name() }}" />
</a>
{% endif %}
</div>
<div id="next">
{% if picture.get_next() %}
<a href="{{ url("sas:picture", picture_id=picture.get_next().id) }}#pict">
<img src="{{ picture.get_next().as_picture.get_download_url() }}" alt="{{ picture.get_next().get_display_name() }}" />
<img src="{{ picture.get_next().as_picture.get_download_thumb_url() }}" alt="{{ picture.get_next().get_display_name() }}" />
</a>
{% endif %}
</div>
@ -73,6 +73,9 @@
<p><input type="submit" value="{% trans %}Go{% endtrans %}" /></p>
</form>
</div>
<p>
<a href="{{ picture.get_download_url() }}">{% trans %}HD version{% endtrans %}</a>
</p>
<p style="font-size: smaller;">
<a href="?ask_removal">{% trans %}Ask for removal{% endtrans %}</a>
</p>

2
sas/urls.py
View File

@ -8,6 +8,8 @@ urlpatterns = [
url(r'^album/(?P<album_id>[0-9]+)$', AlbumView.as_view(), name='album'),
url(r'^picture/(?P<picture_id>[0-9]+)$', PictureView.as_view(), name='picture'),
url(r'^picture/(?P<picture_id>[0-9]+)/download$', send_pict, name='download'),
url(r'^picture/(?P<picture_id>[0-9]+)/download/compressed$', send_compressed, name='download_compressed'),
url(r'^picture/(?P<picture_id>[0-9]+)/download/thumb$', send_thumb, name='download_thumb'),
# url(r'^album/new$', AlbumCreateView.as_view(), name='album_new'),
# url(r'^(?P<club_id>[0-9]+)/$', ClubView.as_view(), name='club_view'),
]

18
sas/views.py
View File

@ -23,6 +23,9 @@ class SASForm(forms.Form):
required=False)
def process(self, parent, owner, files, automodere=False):
from core.utils import resize_image
from io import BytesIO
from PIL import Image
try:
if self.cleaned_data['album_name'] != "":
album = Album(parent=parent, name=self.cleaned_data['album_name'], owner=owner, is_moderated=automodere)
@ -36,8 +39,15 @@ class SASForm(forms.Form):
is_folder=False, is_moderated=automodere)
try:
new_file.clean()
# TODO: generate thumbnail
im = Image.open(BytesIO(f.read()))
thumb = resize_image(im, 200, f.content_type.split('/')[-1])
compressed = resize_image(im, 600, f.content_type.split('/')[-1])
new_file.thumbnail = thumb
new_file.thumbnail.name = new_file.name
new_file.compressed = compressed
new_file.compressed.name = new_file.name
new_file.save()
print(new_file.compressed)
except Exception as e:
self.add_error(None, _("Error uploading file %(file_name)s: %(msg)s") % {'file_name': f, 'msg': repr(e)})
@ -120,6 +130,12 @@ class PictureView(CanViewMixin, DetailView, FormMixin):
def send_pict(request, picture_id):
return send_file(request, picture_id, Picture)
def send_compressed(request, picture_id):
return send_file(request, picture_id, Picture, "compressed")
def send_thumb(request, picture_id):
return send_file(request, picture_id, Picture, "thumbnail")
class AlbumView(CanViewMixin, DetailView, FormMixin):
model = Album
form_class = SASForm