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Decoupled page transformation interface, added default transformation support

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This commit is contained in:
Roberto Rosario
2011-02-14 02:11:39 -04:00
parent 06d7e5a46a
commit fbc8bc960a
9 changed files with 65 additions and 34 deletions
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34
apps/documents/views.py
View File

@@ -10,16 +10,19 @@ from django.core.files.base import File
from django.conf import settings
from django.utils.http import urlencode
from django.template.defaultfilters import slugify
from django.core.exceptions import ObjectDoesNotExist
from common.utils import pretty_size
from permissions.api import check_permissions, Unauthorized
from filetransfers.api import serve_file
from converter.api import convert, in_image_cache, QUALITY_DEFAULT
from common.utils import pretty_size
from converter import TRANFORMATION_CHOICES
from utils import from_descriptor_to_tempfile
from models import Document, DocumentMetadata, DocumentType, MetadataType, \
DocumentPage
DocumentPage, DocumentPageTransformation
from forms import DocumentTypeSelectForm, DocumentCreateWizard, \
MetadataForm, DocumentForm, DocumentForm_edit, DocumentForm_view, \
StagingDocumentForm, DocumentTypeMetadataType, DocumentPreviewForm, \
@@ -35,6 +38,8 @@ from documents.conf.settings import PREVIEW_SIZE
from documents.conf.settings import THUMBNAIL_SIZE
from documents.conf.settings import GROUP_MAX_RESULTS
from documents.conf.settings import GROUP_SHOW_EMPTY
from documents.conf.settings import DEFAULT_TRANSFORMATIONS
from documents import PERMISSION_DOCUMENT_CREATE, \
PERMISSION_DOCUMENT_CREATE, PERMISSION_DOCUMENT_PROPERTIES_EDIT, \
@@ -124,6 +129,20 @@ def upload_document_with_type(request, document_type_id, multiple=True):
instance.update_checksum()
instance.update_mimetype()
instance.update_page_count()
if DEFAULT_TRANSFORMATIONS:
for transformation in DEFAULT_TRANSFORMATIONS:
if 'name' in transformation:
for document_page in instance.documentpage_set.all():
page_transformation = DocumentPageTransformation(
document_page=document_page,
order=0,
transformation=transformation['name'])
if 'arguments' in transformation:
page_transformation.arguments = transformation['arguments']
page_transformation.save()
if 'document_type_available_filenames' in local_form.cleaned_data:
if local_form.cleaned_data['document_type_available_filenames']:
@@ -445,17 +464,20 @@ def get_document_image(request, document_id, size=PREVIEW_SIZE, quality=QUALITY_
page = int(request.GET.get('page', 1))
transformation_list = []
try:
#Catch invalid or non existing pages
document_page = DocumentPage.objects.get(document=document, page_number=page)
for tranformation in document_page.documentpagetransformation_set.all():
for page_transformation in document_page.documentpagetransformation_set.all():
try:
transformation_list.append(tranformation.get_transformation())
if page_transformation.transformation in TRANFORMATION_CHOICES:
output = TRANFORMATION_CHOICES[page_transformation.transformation] % eval(page_transformation.arguments)
transformation_list.append(output)
except Exception, e:
if request.user.is_staff:
messages.warning(request, _(u'Transformation %s error: %s' % (tranformation, e)))
messages.warning(request, _(u'Error for transformation %s:, %s' % (page_transformation.get_transformation_display(), e)))
else:
pass
except:
except ObjectDoesNotExist:
pass
tranformation_string = ' '.join(transformation_list)