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# Copyright 2015 Google Inc. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Sample application that demonstrates how to use the App Engine Images API.
For more information, see README.md.
"""
# [START all]
# [START thumbnailer]
from google.appengine.api import images
from google.appengine.ext import ndb
import webapp2
class Photo(ndb.Model):
title = ndb.StringProperty()
full_size_image = ndb.BlobProperty()
class Thumbnailer(webapp2.RequestHandler):
def get(self):
if self.request.get("id"):
photo = Photo.get_by_id(int(self.request.get("id")))
if photo:
img = images.Image(photo.full_size_image)
img.resize(width=80, height=100)
img.im_feeling_lucky()
thumbnail = img.execute_transforms(output_encoding=images.JPEG)
self.response.headers['Content-Type'] = 'image/jpeg'
self.response.out.write(thumbnail)
return
# Either "id" wasn't provided, or there was no image with that ID
# in the datastore.
self.error(404)
# [END thumbnailer]
app = webapp2.WSGIApplication([('/img', Thumbnailer)], debug=True)
# [END all]