def loadFromFile(self, path, desired_size):
# Set properties.
self._path = path
self._size = desired_size
# Create the preview version if necessary.
preview_path = path + '.preview'
if os.path.exists(preview_path):
self._preview = Image.open(preview_path)
else:
with open(path, 'r') as infile:
original = infile.read()
preview = scale(original, desired_size)
if type(preview) == RemoteDataHandle:
preview = Scavenger.fetch_data(preview)
with open(preview_path, 'w') as outfile:
outfile.write(preview)
self._preview = Image.open(preview_path)
# Load pixmap version.
self._previewToPixmap()
def run(self):
# Create an in-memory version of the image.
sio = StringIO()
self.image.save(sio, 'JPEG', quality=95)
image_data = sio.getvalue()
try:
if self.op == 'sharpen':
data_handle = imageops.sharpen(image_data)
image_data = Scavenger.fetch_data(data_handle)
sio = StringIO(image_data)
new_image = Image.open(sio)
elif self.op == 'blur':
data_handle = imageops.blur(image_data)
image_data = Scavenger.fetch_data(data_handle)
sio = StringIO(image_data)
new_image = Image.open(sio)
elif self.op == 'color':
data_handle = imageops.color(image_data, self.args)
image_data = Scavenger.fetch_data(data_handle)
sio = StringIO(image_data)
new_image = Image.open(sio)
elif self.op == 'brightness':
data_handle = imageops.brightness(image_data, self.args)
image_data = Scavenger.fetch_data(data_handle)
sio = StringIO(image_data)
new_image = Image.open(sio)
elif self.op == 'contrast':
data_handle = imageops.contrast(image_data, self.args)
image_data = Scavenger.fetch_data(data_handle)
sio = StringIO(image_data)
new_image = Image.open(sio)
elif self.op == 'invert':
data_handle = imageops.invert(image_data)
image_data = Scavenger.fetch_data(data_handle)
sio = StringIO(image_data)
new_image = Image.open(sio)
else:
raise Exception('Unknown operation "%s".'%self.op)
self.callback(True, new_image)
except Exception, e:
print e
self.callback(False, e)
self._image = fliphorizontal(self._image)
except Exception, e:
logger.error("Error performing horizontal flip.", exc_info=True)
self._success = False
elif self._operation == 'flipvertical':
try:
self._image = flipvertical(self._image)
except Exception, e:
logger.error("Error performing vertical flip.", exc_info=True)
self._success = False
# Fetch result data if necessary.
if type(self._image) == RemoteDataHandle:
try:
self._image = Scavenger.fetch_data(self._image)
except Exception, e:
logger.error('Error fetching remote data handle.', exc_info=True)
self._success = False
def image(): #@NoSelf
def fget(self):
return self._image
def fset(self, value):
self._image = value
def fdel(self):
del self._image
return locals()
image = property(**image())
def operation(): #@NoSelf
