def save_cropped(
self, fieldname, field, scale, image_file, interface=None):
""" see interface
"""
handler = IImageScaleHandler(field)
sizes = field.getAvailableSizes(self.context)
w, h = sizes[scale]
data = handler.createScale(
self.context, scale, w, h, data=image_file.read())
# store scale for classic <fieldname>_<scale> traversing
handler.storeScale(self.context, scale, **data)
# call plone.scale.storage.scale method in order to
# provide saved scale for plone.app.imaging @@images view
def crop_factory(fieldname, direction='keep', **parameters):
blob = Blob()
result = blob.open('w')
_, image_format, dimensions = scaleImage(
data['data'], result=result, **parameters)
result.close()
return blob, image_format, dimensions
# call storage with actual time in milliseconds
# this always invalidates old scales
storage = AnnotationStorage(self.context, self.now_millis)
storage.scale(
factory=crop_factory, fieldname=field.__name__, width=w, height=h)
def save_cropped(self, fieldname, scale, image_file):
""" see interface
"""
field = self.get_image_field(fieldname)
handler = IImageScaleHandler(field)
sizes = field.getAvailableSizes(self.context)
w, h = sizes[scale]
data = handler.createScale(self.context, scale, w, h, data=image_file.read())
# store scale for classic <fieldname>_<scale> traversing
handler.storeScale(self.context, scale, **data)
# call plone.scale.storage.scale method in order to
# provide saved scale for plone.app.imaging @@images view
def crop_factory(fieldname, direction="keep", **parameters):
blob = Blob()
result = blob.open("w")
_, image_format, dimensions = scaleImage(data["data"], result=result, **parameters)
result.close()
return blob, image_format, dimensions
# Avoid browser cache
# calling reindexObject updates the modified metadate too
self.context.reindexObject()
# call storage with actual time in milliseconds
# this always invalidates old scales
storage = AnnotationStorage(self.context, _millis)
storage.scale(factory=crop_factory, fieldname=field.__name__, width=w, height=h)
def _crop(self, fieldname, scale, box, interface=None):
"""interface just useful to locate field on dexterity types
"""
# https://github.com/plone/plone.app.imaging/blob/ggozad-cropping/src/
# plone/app/imaging/cropping.py
field = self.context.getField(fieldname)
if hasattr(field,'getHandler'):
handler = field.getHandler()
else:
handler = IImageScaleHandler(field)
# TODO this is archetype only
value = field.get(self.context)
data = getattr(aq_base(value), 'data', value)
if isinstance(data, Pdata):
data = str(data)
original_file = StringIO(data)
image = PIL.Image.open(original_file)
image_format = image.format or self.DEFAULT_FORMAT
cropped_image = image.crop(box)
cropped_image_file = StringIO()
cropped_image.save(cropped_image_file, image_format, quality=100)
cropped_image_file.seek(0)
sizes = field.getAvailableSizes(self.context)
#regular scale
if len(sizes[scale]) ==3:
w, h, s = sizes[scale]
data = handler.createScale(self.context, scale, w, h, data=cropped_image_file.read())
else:
w, h = sizes[scale]
data = handler.createScale(self.context, scale, w, h,
data=cropped_image_file.read())
# store scale for classic <fieldname>_<scale> traversing
handler.storeScale(self.context, scale, **data)
# call plone.scale.storage.scale method in order to
# provide saved scale for plone.app.imaging @@images view
def crop_factory(fieldname, direction='keep', **parameters):
blob = Blob()
result = blob.open('w')
_, image_format, dimensions = scaleImage(data['data'],
result=result, **parameters)
result.close()
return blob, image_format, dimensions
# call storage with actual time in milliseconds
# this always invalidates old scales
storage = AnnotationStorage(self.context,
self.now_millis)
storage.scale(factory=crop_factory, fieldname=fieldname,
width=w, height=h)
# store crop information in annotations
self._store(fieldname, scale, box)
def createScales(self, instance, value=None):
""" creates scales and stores them; largely based on the version from
`Archetypes.Field.ImageField` """
sizes = self.getAvailableSizes(instance)
handler = IImageScaleHandler(self)
for name, size in sizes.items():
width, height = size
data = handler.createScale(instance, name, width, height, data=value)
if data is not None:
handler.storeScale(instance, name, **data)
def createScales(self, instance, value=None):
""" creates scales and stores them; largely based on the version from
`Archetypes.Field.ImageField` """
sizes = self.getAvailableSizes(instance)
handler = IImageScaleHandler(self)
for name, size in sizes.items():
width, height = size
data = handler.createScale(instance, name, width, height, data=value)
if data is not None:
handler.storeScale(instance, name, **data)
def save_cropped(self, fieldname, scale, image_file):
""" see interface
"""
field = self.get_image_field(fieldname)
handler = IImageScaleHandler(field)
sizes = field.getAvailableSizes(self.context)
w, h = sizes[scale]
data = handler.createScale(self.context,
scale,
w,
h,
data=image_file.read())
# store scale for classic <fieldname>_<scale> traversing
handler.storeScale(self.context, scale, **data)
# call plone.scale.storage.scale method in order to
# provide saved scale for plone.app.imaging @@images view
def crop_factory(fieldname, direction='keep', **parameters):
blob = Blob()
result = blob.open('w')
_, image_format, dimensions = scaleImage(data['data'],
result=result,
**parameters)
result.close()
return blob, image_format, dimensions
# Avoid browser cache
# calling reindexObject updates the modified metadate too
self.context.reindexObject()
# call storage with actual time in milliseconds
# this always invalidates old scales
storage = AnnotationStorage(self.context, _millis)
storage.scale(factory=crop_factory,
fieldname=field.__name__,
width=w,
height=h)
