Python shortcuts.get_thumbnail函数代码示例

 def render(self, **kwargs):
     thumb = get_thumbnail(self.image, settings.THUMBNAIL_SETTINGS['CONTENT_PICTURE_NEWS'], upscale=False,
                           crop='center')
     image = get_thumbnail(self.image, settings.THUMBNAIL_SETTINGS['FULLSCREEN_SIZE'], upscale=False)
     tag = render_to_string("content/image_content.html", dict(
         image=image, thumb=thumb, caption=self.caption, url=self.url, text=self.text))
     return mark_safe(tag)

    def to_native(self, value):
        if not value:
            return None

        # The get_thumbnail() helper doesn't respect the THUMBNAIL_DEBUG setting
        # so we need to deal with exceptions like is done in the template tag.
        thumbnail = ""
        try:
            large = settings.MEDIA_URL + unicode(get_thumbnail(value, "800x450", crop=self.crop))
            full = settings.MEDIA_URL + unicode(get_thumbnail(value, "800x600"))
            small = settings.MEDIA_URL + unicode(get_thumbnail(value, "120x120", crop=self.crop))
            square = settings.MEDIA_URL + unicode(get_thumbnail(value, "120x120", crop=self.crop, colorspace="GRAY"))
        except Exception:
            if getattr(settings, "THUMBNAIL_DEBUG", None):
                raise
            logger.error("Thumbnail failed:", exc_info=sys.exc_info())
            return None
        request = self.context.get("request")
        if request:
            return {
                "full": request.build_absolute_uri(full),
                "large": request.build_absolute_uri(large),
                "small": request.build_absolute_uri(small),
                "square": request.build_absolute_uri(square),
            }
        return {"full": full, "large": large, "small": small, "square": square}

    def to_native(self, value):
        if not value:
            return None

        # The get_thumbnail() helper doesn't respect the THUMBNAIL_DEBUG setting
        # so we need to deal with exceptions like is done in the template tag.
        thumbnail = ""
        try:
            large = settings.MEDIA_URL + unicode(get_thumbnail(value, '800x450', crop=self.crop))
            full = settings.MEDIA_URL + unicode(get_thumbnail(value, '1200x900'))
            small = settings.MEDIA_URL + unicode(get_thumbnail(value, '400x380', crop=self.crop))
            square = settings.MEDIA_URL + unicode(get_thumbnail(value, '120x120', crop=self.crop, colorspace="GRAY"))
        except Exception:
            if getattr(settings, 'THUMBNAIL_DEBUG', None):
                raise
            logger.error('Thumbnail failed:', exc_info=sys.exc_info())
            return None
        request = self.context.get('request')
        if request:
            return {
                    'full': request.build_absolute_uri(full),
                    'large': request.build_absolute_uri(large),
                    'small': request.build_absolute_uri(small),
                    'square': request.build_absolute_uri(square),
                }
        return {'full': full, 'large': large, 'small': small, 'square': square}

def upload(request, purpose, pk=None):
    if purpose == 'job_seeker_photo':
        job_seeker_information = request.user.profile.personal_information
        job_seeker_information.photo = request.FILES['files[]']
        job_seeker_information.save()
        url = get_thumbnail(job_seeker_information.photo, '203x203', crop="center").url
    elif purpose == 'employer_company_logo':
        employer_profile = request.user.profile
        employer_profile.logo = request.FILES['files[]']
        employer_profile.save()
        url = get_thumbnail(employer_profile.logo, '203x203', crop="center").url
    elif purpose in ('job_support_document', 'job_full_position_document'):
        job = get_object_or_404(Job, pk=pk, owner=request.user)
        document_type = get_document_type(purpose)
        if purpose == 'job_full_position_document':
            if JobUploadDocument.objects.filter(job=job, document_type=document_type).count():
                return HttpResponseBadRequest(json.dumps({'errors': {'job_full_position_document': 'Already exists.'}}))
        upload_document = JobUploadDocument()
        upload_document.job = job
        upload_document.document_type = document_type
        upload_document.document = request.FILES['files[]']
        upload_document.save()
        return redirect('api_dispatch_detail', 'v1', 'job_upload_document', upload_document.pk)
    else:
        raise Http404
    return HttpResponse(json.dumps({'url': url}), mimetype='application/json')

 def _render(self, thumb_conf_name, full_conf_name):
     conf = settings.THUMBNAIL_SETTINGS
     thumb_conf = conf[thumb_conf_name]
     full_conf = conf[full_conf_name]
     thumb = get_thumbnail(self.image, thumb_conf[0], **thumb_conf[1])
     image = get_thumbnail(self.image, full_conf[0], **full_conf[1])
     div_caption = IMAGE_CAPTION_TEMPLATE.format(caption=self.caption) if self.caption else u""
     tag = IMAGE_TEMPLATE.format(image=image, thumb=thumb, position=self.position, caption=self.caption, div_caption=div_caption)
     return mark_safe(tag)

def _post_to_facebook(instance, tenant=None):
    """ Post a Wallpost to users Facebook page using Celery """
    logger.info("FB post for:")
    logger.info("{0} with id {1} and tenant {2}".format(instance.__class__, instance.id, tenant.client_name))

    if not tenant:
        return

    from tenant_schemas.utils import get_tenant_model
    from django.db import connection

    db_tenant = get_tenant_model().objects.get(client_name=tenant.client_name)
    connection.set_tenant(db_tenant)

    with LocalTenant(tenant, clear_tenant=True):
        social = instance.author.social_auth.get(provider="facebook")
        authorization_header = "Bearer {token}".format(token=social.extra_data["access_token"])

        graph_url = "https://graph.facebook.com/v2.4/me/feed"
        base_url = "https://{domain}".format(domain=tenant.domain_url)

        link = instance.content_object.get_absolute_url()

        image = None
        # This code is executed via Celery, we assume the MediaWallpostPhoto
        # is saved and available on the instance. If the user uploaded
        # photos with the MediaWallpost we take the first one and include it
        # in the Facebook post. Otherwise we fallback to the project image.
        if isinstance(instance, MediaWallpost) and instance.photos.count() > 0:
            image = urljoin(base_url, get_thumbnail(instance.photos.all()[0].photo, "600x400").url)
        else:
            if hasattr(instance.content_object, "image") and instance.content_object.image:
                image = urljoin(base_url, get_thumbnail(instance.content_object.image, "600x400").url)

        description = getattr(instance.content_object, "pitch", instance.content_object.description)

        data = {
            "link": link,
            "name": instance.content_object.title,
            "description": description,
            "message": instance.text,
            "picture": image,
            "caption": tenant_url(),
        }

        # TODO: log failed requests
        requests.post(
            graph_url,
            data=json.dumps(data),
            headers={"Authorization": authorization_header, "Content-Type": "application/json"},
        )

 def render(self, name, value, attrs=None):
     output = super(AdminImageWidget, self).render(name, value, attrs)
     get_thumbnail(value, 'x80', upscale=False)
     if value and hasattr(value, 'url'):
         try:
             mini = get_thumbnail(value, 'x80', upscale=False)
         except Exception:
             pass
         else:
             output = (
                 u'<div style="float:left">'
                 u'<a style="width:%spx;display:block;margin:0 0 10px" class="thumbnail" target="_blank" href="%s">'
                 u'<img src="%s"></a>%s</div>'
                 ) % (mini.width, value.url, mini.url, output)
     return mark_safe(output)

 def render(self, name, value, attrs=None, **kwargs):
     output = super(AdminImageWidget, self).render(name, value, attrs, **kwargs)
     if value and hasattr(value, 'url'):
         ext = 'JPEG'
         try:
             aux_ext = str(value).split('.')
             if aux_ext[len(aux_ext) - 1].lower() == 'png':
                 ext = 'PNG'
             elif aux_ext[len(aux_ext) - 1].lower() == 'gif':
                 ext = 'GIF'
         except Exception:
             pass
         try:
             mini = get_thumbnail(value, 'x80', upscale=False, format=ext)
         except Exception as e:
             logger.warning("Unable to get the thumbnail", exc_info=e)
         else:
             try:
                 output = (
                     '<div style="float:left">'
                     '<a style="width:%spx;display:block;margin:0 0 10px" class="thumbnail" '
                     'target="_blank" href="%s">'
                     '<img src="%s"></a>%s</div>'
                 ) % (mini.width, value.url, mini.url, output)
             except (AttributeError, TypeError):
                 pass
     return mark_safe(output)

 def render(self, name, value, attrs=None):
     output = super(AdminImageWidget, self).render(name, value, attrs)
     if value and hasattr(value, "url"):
         ext = "JPEG"
         try:
             aux_ext = str(value).split(".")
             if aux_ext[len(aux_ext) - 1].lower() == "png":
                 ext = "PNG"
         except:
             pass
         try:
             mini = get_thumbnail(value, "x80", upscale=False, format=ext)
         except Exception as e:
             logger.warn("Unable to get the thumbnail", exc_info=e)
         else:
             try:
                 output = (
                     '<div style="float:left">'
                     '<a style="width:%spx;display:block;margin:0 0 10px" class="thumbnail" '
                     'target="_blank" href="%s">'
                     '<img src="%s"></a>%s</div>'
                 ) % (mini.width, value.url, mini.url, output)
             except AttributeError:
                 pass
     return mark_safe(output)

    def image_tag(self, obj):
        data = {}
        if obj.photo:
            data['image_full_url'] = obj.photo.url
            data['image_thumb_url'] = get_thumbnail(obj.photo, "120x120", crop="center").url

        return render_to_string("admin/wallposts/mediawallpost_photoinline.html", data)

def get_map(request):
    from realestate.listing.templatetags.extra_functions import currency

    listings = []
    for listing in Listing.objects.active():
        lat, lng = listing.coordenadas.split(',')
        try:
            im = get_thumbnail(listing.main_image.imagen, '135x90', crop='center', quality=99).url
        except (ValueError, AttributeError):
            im = ''

        try:
            url = listing.get_absolute_url()
        except:
            url = ''
        listings.append({
            'id': listing.id,
            'url': url,
            'street': listing.get_address(),
            'title': listing.title,
            'lat': lat,
            'lng': lng,
            'price': currency(listing.price),
            'img': im,


        })

    return {'listings': listings, }

    def render(self, name, value, attrs=None):
        """
        Render the ``input`` field based on the defined ``template_name``. The
        image URL is take from *value* and is provided to the template as
        ``image_url`` context variable relative to ``MEDIA_URL``. Further
        attributes for the ``input`` element are provide in ``input_attrs`` and
        contain parameters specified in *attrs* and *name*.
        If *value* contains no valid image URL an empty string will be provided
        in the context.
        """
        if value is None:
            value = ''

        final_attrs = self.build_attrs(attrs, type=self.input_type, name=name)
        if value != '':
            # Only add the 'value' attribute if a value is non-empty.
            final_attrs['value'] = force_unicode(self._format_value(value))

        image_url = final_attrs.get('value', '')
        image_original_url = None
        image_thumb = None
        if image_url:
            image_original_url = os.path.join(settings.MEDIA_URL, image_url)
            try:
                image_thumb = get_thumbnail(image_url, '100x100', crop='center', upscale=True)
            except IOError as inst:
                logger.error(inst)
        
        return render_to_string(self.template_name, Context({
            'image_thumb': image_thumb,
            'input_attrs': flatatt(final_attrs),
            'image_url': image_url,
            'image_original_url': image_original_url,
            'image_id': "%s-image" % final_attrs['id'],
        }))

    def get_avatar_url(self):
        if self.hide_avatar:
            return settings.DEFAULT_AVATAR
        if self.avatar:
            thumbnail = get_thumbnail(self.avatar,
                                      "%(size)ix%(size)i" % dict(size=settings.AVATAR_SIZE),
                                      crop="center")
            return thumbnail.url
        elif self.user.email:
            try:
                default = "http://%s%s" % (Site.objects.get_current().domain, settings.DEFAULT_AVATAR)
                url = "%s/%s.jpg?%s" % (settings.GRAVATAR_BASE,
                                        hashlib.md5(self.user.email).hexdigest(),
                                        urllib.urlencode({
                                            'size': str(settings.AVATAR_SIZE),
                                            'rating': "g",
                                            'default': default,
                                        }))
            except:
                import traceback
                print traceback.format_exc()
                raise
            return url

        return settings.DEFAULT_AVATAR

 def admin_thumbnail(self):
     try:
         return '<img src="%s">' % get_thumbnail(self.image, '200x100', crop='center').url
     except IOError:
         return 'IOError'
     except ThumbnailError, ex:
         return 'ThumbnailError, %s' % ex.message

    def _render(self, context):
        file_ = self.file_.resolve(context)
        geometry = self.geometry.resolve(context)
        options = {}
        for key, expr in self.options:
            noresolve = {'True': True, 'False': False, 'None': None}
            value = noresolve.get(text_type(expr), expr.resolve(context))
            if key == 'options':
                options.update(value)
            else:
                options[key] = value

        thumbnail = get_thumbnail(file_, geometry, **options)

        if not thumbnail or (isinstance(thumbnail, DummyImageFile) and self.nodelist_empty):
            if self.nodelist_empty:
                return self.nodelist_empty.render(context)
            else:
                return ''

        if self.as_var:
            context.push()
            context[self.as_var] = thumbnail
            output = self.nodelist_file.render(context)
            context.pop()
        else:
            output = thumbnail.url

        return output