def getPILFromObject(self, obj):
"""
"""
if isinstance(obj, ImageFile):
# Normal file system file
return obj
elif isinstance(obj, FSImage):
# FSImage
# Read data from object
return PIL.Image.open(obj.getObjectFSPath())
elif isinstance(obj, OFS.Image.Image):
# OFS Image
# Held in the portal_skins folder, uploaded via ZMI
data = obj.data
io = cStringIO.StringIO(data)
return PIL.Image.open(io)
elif isinstance(obj, ATFieldImage):
# Read data from object
data = obj.data
io = cStringIO.StringIO(data)
return PIL.Image.open(io)
elif IATImage.providedBy(obj):
obj = obj.getImage()
data = obj.data
io = cStringIO.StringIO(data)
return PIL.Image.open(io)
else:
raise RuntimeError("Can't handle:" + str(obj))
def fields(self):
if IATImage.providedBy(self.context):
fields = z3cfield.Fields(self.interface)
fields['bannerImageLink'].widgetFactory = ContentTreeFieldWidget
else:
fields = z3cfield.Fields(self.interface).select(
'bannerLocalOnly', 'bannerStopAcquisition')
return fields
def splash(self):
splash_path = self.data.splash
if not splash_path:
return None
if splash_path.startswith('/'):
splash_path = splash_path[1:]
if not splash_path:
return None
portal = self.portal()
splash = portal.unrestrictedTraverse(splash_path, default=None)
if splash is not None and not IATImage.providedBy(splash):
return None
return splash
def getPILFromObject(self, obj):
""" Convert various Zope based image objects to Python Imaging Library image data.
@param obj: Any Zope imagish object
"""
if isinstance(obj, ImageFile):
# Normal file system file
return obj
elif isinstance(obj, FSImage):
# FSImage
# Read data from object
return PIL.Image.open(obj.getObjectFSPath())
elif isinstance(obj, ATFieldImage):
# Read data from object
pimage = obj.data
# TODO
# Not sure what's going on here...
#
if hasattr(pimage, "data"):
data = pimage.data
else:
data = pimage
io = cStringIO.StringIO(data)
return PIL.Image.open(io)
elif IATImage.providedBy(obj):
obj = obj.getImage()
data = obj.data
io = cStringIO.StringIO(data)
return PIL.Image.open(io)
elif isinstance(obj, OFS.Image.Image):
# OFS Image
# Held in the portal_skins folder, uploaded via ZMI
data = obj.data
io = cStringIO.StringIO(data)
return PIL.Image.open(io)
elif HAS_BLOBS and isinstance(obj, BlobWrapper):
# Plone 4 BLOB images
data = obj.data
io = cStringIO.StringIO(data)
return PIL.Image.open(io)
else:
raise RuntimeError("Can't handle:" + str(obj))
def getImageObject(self, path):
""" Get image handle to traversable Zope object, assuming object is some sort of image
Path must not start with slash.
Path is relative to the site root.
"""
site = getSite()
img = site.restrictedTraverse(path)
# UGH... the resource based image isn't a real class but some
# dynamically generated Five metaclass... no f*****g clue
# how to do interface checks against those,
# so we just
if ("DirContainedImageResource" in img.__class__.__name__) or ("FileResource" in img.__class__.__name__) :
# Resource based image, on file system, handle with PIL
# info = (width, height)
source = img.context.path
info = PIL.Image.open(source)
return info
elif isinstance(img, FSImage):
# FSImage at /plone/logo
# width, height = util.getImageInfo(img)
# <implementedBy Products.CMFCore.FSImage.FSImage>
return img
elif isinstance(img, OFS.Image.Image):
# image uploaded to a portal_skins/custom
return img
elif IATImage.providedBy(img):
# Image is uploaded image content type
return img.getImage()
else:
if callable(img):
img = img()
if isinstance(img, ATFieldImage):
return img
raise RuntimeError("Unknown image object %s:%s" % (path, str(img.__class__)))
return info
def splash(self):
splash_path = self.data.splash
if not splash_path:
return None
if splash_path.startswith('/'):
splash_path = splash_path[1:]
if not splash_path:
return None
portal_state = getMultiAdapter((self.context, self.request), name=u'plone_portal_state')
portal = portal_state.portal()
splash = portal.restrictedTraverse(splash_path, default=None)
if splash is not None and not IATImage.providedBy(splash):
return None
return splash
def splash(self):
splash_path = self.data.splash
if not splash_path:
return None
if splash_path.startswith('/'):
splash_path = splash_path[1:]
if not splash_path:
return None
portal_state = getMultiAdapter((self.context, self.request),
name=u'plone_portal_state')
portal = portal_state.portal()
splash = portal.restrictedTraverse(splash_path, default=None)
if splash is not None and not IATImage.providedBy(splash):
return None
return splash
def get_title_image_tag(self):
"""Generate image tag.
Note: ``target_title_image`` uses the uberselection-widget
and does not return an object (unlike Archetypes reference
fields).
"""
image_path = self.data.target_title_image
# it feels insane that i need to do manual strippping of the first slash in this string.
# I must be doing something wrong
# please make this bit more sane
if image_path is None or len(image_path)==0:
return None
# The portal root is never a image
if image_path[0]=='/':
image_path = image_path[1:]
image = self.portal.restrictedTraverse(image_path, default=None)
# we should also check that the returned object implements the interfaces for image
# So that we don't accidentally return folders and stuff that will make things break
scale = self.data.scale or u"mini"
scale = scale.encode('ascii', 'replace')
if IImageScaleTraversable and IImageScaleTraversable.providedBy(image):
try:
view = image.restrictedTraverse('@@images')
view = view.__of__(image)
return view.tag('image', scale=scale)
except:
return None
elif IATImage.providedBy(image) and image.getImage() is not None:
return image.tag(scale=scale)
else:
return None
def get_title_image_tag(self):
"""Generate image tag.
Note: ``target_title_image`` uses the uberselection-widget
and does not return an object (unlike Archetypes reference
fields).
"""
image_path = self.data.target_title_image
# it feels insane that i need to do manual strippping of the first slash in this string.
# I must be doing something wrong
# please make this bit more sane
if image_path is None or len(image_path) == 0:
return None
# The portal root is never a image
if image_path[0] == '/':
image_path = image_path[1:]
image = self.portal.restrictedTraverse(image_path, default=None)
# we should also check that the returned object implements the interfaces for image
# So that we don't accidentally return folders and stuff that will make things break
scale = self.data.scale or u"mini"
scale = scale.encode('ascii', 'replace')
if IImageScaleTraversable and IImageScaleTraversable.providedBy(image):
try:
view = image.restrictedTraverse('@@images')
view = view.__of__(image)
return view.tag('image', scale=scale)
except:
return None
elif IATImage.providedBy(image) and image.getImage() is not None:
return image.tag(scale=scale)
else:
return None
def is_image(self, obj):
return IATImage.providedBy(obj)
def is_image(self):
return IATImage.providedBy(self.context)
def getImageObject(self, path):
""" Get image handle to traversable Zope object, assuming object is some sort of image
Path must not start with slash.
Path is relative to the site root.
@param path: Path to Zope object
@return: Image-like object (heterogenous return values)
"""
site = getSite()
try:
img = site.unrestrictedTraverse(path)
except Unauthorized:
# The parent folder might be private and the image public,
# in which case we should be able to view the image after all.
parent_path = '/'.join(path.split('/')[:-1])
image_path = path.split('/')[-1]
parent = site.unrestrictedTraverse(parent_path)
img = parent.restrictedTraverse(image_path)
# UGH... the resource based image isn't a real class but some
# dynamically generated Five metaclass... no f*****g clue
# how to do interface checks against those,
# so we just
if ("DirContainedImageResource" in img.__class__.__name__) or ("FileResource" in img.__class__.__name__) :
# Resource based image, on file system, handle with PIL
# info = (width, height)
source = img.context.path
info = PIL.Image.open(source)
return info
elif isinstance(img, FSImage):
# FSImage at /plone/logo
# width, height = util.getImageInfo(img)
# <implementedBy Products.CMFCore.FSImage.FSImage>
return img
elif isinstance(img, OFS.Image.Image):
# image uploaded to a portal_skins/custom
return img
elif IATImage.providedBy(img):
# Image is uploaded image content type
return img.getImage()
else:
# pointer to exposed ATImage method
if callable(img):
img = img()
if HAS_BLOBS:
# img might be <bound method ATBlob.getImage of <ATImage at /plone/test_img>
# We resolve it to blob above
if isinstance(img, BlobWrapper):
return img
if isinstance(img, ATFieldImage):
return img
raise RuntimeError("Unknown image object %s:%s" % (path, str(img.__class__)))
return info
