def get(self):
i_key = ndb.Key(urlsafe=self.request.get('img_id'))
x = self.request.get('size')
deg = self.request.get('deg')
flip = str(self.request.get('flip'))
lucky = str(self.request.get('lucky'))
#flipV=self.request.get('flipV')
#nothing=self.request.get('nothing')
#self.response.out.write(str(x)+"<br>")
greeting = i_key.get()
if greeting.bomma:
if x == '':
x = '500'
x = int(x)
deg = int(deg)
self.response.headers['Content-Type'] = 'image/png'
greeting.bomma = images.resize(greeting.bomma, x, x)
greeting.bomma = images.rotate(greeting.bomma, deg)
if flip == "flipH":
greeting.bomma = images.horizontal_flip(greeting.bomma)
if flip == "flipV":
greeting.bomma = images.vertical_flip(greeting.bomma)
if lucky == "lucky":
greeting.bomma = images.im_feeling_lucky(greeting.bomma)
self.response.out.write(greeting.bomma)
else:
self.response.out.write('No image')
def post(self):
user = users.get_current_user()
uploaded = Uploaded.get_by_key_name(str(user))
response = "baz"
if uploaded is None:
response = "No image uploaded yet."
else:
image = uploaded.image
if self.request.get('hflip'):
newimage = images.horizontal_flip(image)
elif self.request.get('vflip'):
newimage = images.vertical_flip(image)
elif self.request.get('rotater'):
newimage = images.rotate(image, 90)
elif self.request.get('rotatel'):
newimage = images.rotate(image, 270)
uploaded.image = newimage
uploaded.put()
self.redirect("/")
health['datastore'] = RUNNING
entry = StatusText(key_name = "bazbookey")
entry.content = "bazbooval"
if entry.put():
health['datastore_write'] = RUNNING
else:
health['datastore_write'] = FAILED
logging.error("Datastore write FAILED no exception given")
except Exception, e:
health['datastore'] = FAILED
logging.error("Datastore FAILED %s"%(str(e)))
if capability == "all" or capability == "images":
try:
image = urlfetch.fetch("http://localhost:8079/images/cloud.png").content
images.horizontal_flip(image)
images.vertical_flip(image)
images.rotate(image, 90)
images.rotate(image, 270)
health['images'] = RUNNING
except Exception, e:
health['images'] = FAILED
logging.error("images API FAILED %s"%(str(e)))
if capability == "all" or capability == "memcache":
try:
if memcache.set("boo", "baz", 10):
health['memcache'] = RUNNING
else:
health['memcache'] = FAILED
logging.error("memcached API FAILED no exception")
try:
entry = StatusText(key_name = "bazbookey")
entry.content = "bazbooval"
if entry.put():
health['datastore_write'] = RUNNING
else:
health['datastore_write'] = FAILED
logging.error("Datastore write FAILED no exception given")
except Exception, e:
health['datastore_write'] = FAILED
logging.error("Datastore write FAILED %s"%(str(e)))
if capability == "all" or capability == "images":
try:
image = urlfetch.fetch("http://localhost/images/status_running.gif").content
images.horizontal_flip(image)
images.vertical_flip(image)
images.rotate(image, 90)
images.rotate(image, 270)
health['images'] = RUNNING
except Exception, e:
health['images'] = FAILED
logging.error("images API FAILED %s"%(str(e)))
if capability == "all" or capability == "memcache":
try:
if memcache.set("boo", "baz", 10):
health['memcache'] = RUNNING
else:
health['memcache'] = FAILED
logging.error("memcached API FAILED no exception")
class ImageCache(db.Model):
url = db.StringProperty()
image = db.BlobProperty()
# fetches images from the internet, manipulates then, and then caches in the datastore.
# TODO - once you can programatically write to the blobstore, we should do that, because
# GAE will let you serve binaries directly from the blobstore without having to activate
# a handler.
@classmethod
def generate_image(cls, url):
image_data = urlfetch.Fetch(url).content
image = cls.weave(image_data)
if not image:
return None
blob = db.Blob(image)
cache = cls(url=url, image=blob)
cache.save()
return cache
@classmethod
def weave(cls, image_data):
# where in the image to crop the box. numbers are relative to image
# make sure max width + crop width can never be > 1 !! Likewise height.
left = 0.0 + random.uniform(0, 0.4)
top = 0.4 + random.uniform(0, 0.2)
crop_width = 0.1 + random.uniform(
0, 0.3) # width of the box, as a proportion of the image width
# target tile width and height. Image will be twice as wide/high
target_width = 500 / 2
target_height = 320 / 2
# the box wants to be in the aspect ratio of the output file.
try:
image = images.Image(image_data)
ratio = float(image.width) / image.height
except images.NotImageError, e:
logging.error("Can't parse image: %s" % e)
return None # not a lot we can do here.
logging.info("width is %s height is %s Ratio is %s" %
(image.width, image.height, ratio))
crop_height = (crop_width * ratio) * (float(target_height) /
target_width)
# don't fall outside of the bounding box. Really shouldn't happen, and it
# messes with the nice distribution of the boxes, but it's better than dying.
if crop_height + top > 1:
top = 1 - crop_height
if crop_width + left > 1:
left = 1 - crop_width
image.crop(left, top, left + crop_width, top + crop_height)
tile = image.execute_transforms(images.JPEG)
tile_image = images.Image(
tile) # need to do this to get width/height. Sigh.
logging.info("image is %s by %s" %
(tile_image.width, tile_image.height))
# issue here - the crop function might not produce an image of the
# exact required aspect ratio, so when we resize to the desired tile size
# here, we dont get an image of the exact right size. To avoid hairline
# cracks, make sure we composite before we resize.
w = tile_image.width - 1
h = tile_image.height - 1
one = images.composite([
(tile, 0, 0, 1.0, images.TOP_LEFT),
(images.horizontal_flip(tile), w, 0, 1.0, images.TOP_LEFT),
(images.vertical_flip(tile), 0, h, 1.0, images.TOP_LEFT),
(images.horizontal_flip(
images.vertical_flip(tile)), w, h, 1.0, images.TOP_LEFT),
],
w * 2,
h * 2,
output_encoding=images.JPEG)
return images.resize(one,
target_width * 2,
target_height * 2,
output_encoding=images.JPEG)
