def thumb_url(image, request, size):
"""
Return the url for displaying the image with dimensions bounded by given
size.
"""
assert IImage.providedBy(image), "Cannot take thumbnail of non-image."
return model_url(image, request, 'thumb', '%dx%d.jpg' % size)
def thumbnail_view(context, request):
assert IImage.providedBy(context), "Context must be an image."
filename = request.subpath[0] # <width>x<length>.jpg
size = map(int, filename[:-4].split('x'))
thumb = context.thumbnail(tuple(size))
# XXX Allow browser caching be setting Last-modified and Expires
# and respecting If-Modified-Since requests with 302 responses.
data = thumb.blobfile.open().read()
return Response(body=data, content_type=thumb.mimetype)
def test_jpg(self):
from opencore.models.interfaces import IImage
from pkg_resources import resource_stream
stream = resource_stream('opencore.models.tests', 'test.jpg')
o = self._makeOne(stream=stream, mimetype='image/jpeg')
self.failUnless(o.is_image)
self.failUnless(IImage.providedBy(o))
self.assertEqual(o.image_size, (600, 400))
self.assertEqual(o.image().size, (600, 400))
from zope.interface.verify import verifyObject
verifyObject(IImage, o)
def test_instance_has_valid_construction(self):
instance = self._makeOne()
self.assertEqual(instance.title, u'title')
self.assertEqual(instance.creator, u'admin')
self.assertEqual(instance.modified_by, u'admin')
self.assertEqual(instance.blobfile.open().read(), 'FAKECONTENT')
self.assertEqual(instance.size, 11)
self.assertEqual(instance.mimetype, 'text/plain')
self.assertEqual(instance.filename, 'afile.txt')
self.failIf(instance.is_image)
from opencore.models.interfaces import IImage
self.failIf(IImage.providedBy(instance))
def uri(self):
if IImage.providedBy(self.context):
return thumb_url(self.context, self.request, (75,75))
return model_url(self.context, self.request)
