def _resize(self, resp):
image = Image(resp.buffer, self.settings)
opts = self._get_resize_options()
resized = image.resize(
self.get_argument("w"), self.get_argument("h"), **opts)
self._forward_headers(resp.headers)
for block in iter(lambda: resized.read(65536), b""):
self.write(block)
resized.close()
def _pilbox_operation(self, operation):
"""
Use Pilbox to transform an image
"""
image = PilboxImage(BytesIO(self.data))
if operation == "region":
image.region(self.options.get("rect").split(','))
elif operation == "rotate":
image.rotate(deg=self.options.get("deg"),
expand=self.options.get("expand"))
elif operation == "resize":
max_width = self.options.get("max-width")
max_height = self.options.get("max-height")
resize_width = self.options.get("w")
resize_height = self.options.get("h")
# Make sure widths and heights are integers
if resize_width:
resize_width = int(resize_width)
if resize_height:
resize_height = int(resize_height)
if max_width:
max_width = int(max_width)
if max_height:
max_height = int(max_height)
# Image size management
with WandImage(blob=self.data) as image_info:
# Don't allow expanding of images
if resize_width or resize_height:
width_oversize = resize_width > image_info.width
height_oversize = resize_height > image_info.height
if (width_oversize or height_oversize):
expand_message = (
"Resize error: Maximum dimensions for this image "
"are {0}px wide by {1}px high.").format(
image_info.width, image_info.height)
raise PilboxError(400, log_message=expand_message)
# Process max_width and max_height
if not resize_width and max_width:
if max_width < image_info.width:
resize_width = max_width
if not resize_height and max_height:
if max_height < image_info.height:
resize_height = max_height
if resize_height or resize_width:
image.resize(width=resize_width,
height=resize_height,
mode=self.options.get("mode"),
filter=self.options.get("filter"),
background=self.options.get("bg"),
retain=self.options.get("retain"),
position=self.options.get("pos"))
self.data = image.save(quality=self.options.get("q")).read()
def _process_response(self, resp):
image = Image(resp.buffer)
image.resize(self.w, self.h)
return image.save()