Implements base.Logic functions in home_settings, site_settings and work
This patch implements the base.Logic funtions needed for making
logic/key_name.py obsolete. This patch defines the needed functions
in home_settings, site_settings and work. All modules in logic/models
now have these functions defined.
logic/models/site_settings.py now inherits from
logic/models/home_settings.py because of their similar connection in
the corresponding models. Please note that the self._keyName for
these two modules still points to logic/key_name.py since entity_type
is still used in views/home.py.
A partial_path and link_name were added to HomeSettings as requested
by SRabbelier.
"""
Utility functions for handling images.
Requires PIL, as you might imagine.
"""
from django.core.files import File
class ImageFile(File):
"""
A mixin for use alongside django.core.files.base.File, which provides
additional features for dealing with images.
"""
def _get_width(self):
return self._get_image_dimensions()[0]
width = property(_get_width)
def _get_height(self):
return self._get_image_dimensions()[1]
height = property(_get_height)
def _get_image_dimensions(self):
if not hasattr(self, '_dimensions_cache'):
self._dimensions_cache = get_image_dimensions(self)
return self._dimensions_cache
def get_image_dimensions(file_or_path):
"""Returns the (width, height) of an image, given an open file or a path."""
from PIL import ImageFile as PILImageFile
p = PILImageFile.Parser()
if hasattr(file_or_path, 'read'):
file = file_or_path
else:
file = open(file_or_path, 'rb')
while 1:
data = file.read(1024)
if not data:
break
p.feed(data)
if p.image:
return p.image.size
return None