def default(request):
# GET params
params = request.GET
# get image width, check limits
w = min(int(params.get('w', PLACEHOLDER_DEFAULT_WIDTH)), PLACEHOLDER_MAX_WIDTH)
h = min(int(params.get('h', PLACEHOLDER_DEFAULT_HEIGHT)), PLACEHOLDER_MAX_HEIGHT)
# check minimum values
w = max(w, PLACEHOLDER_MIN_WIDTH)
h = max(h, PLACEHOLDER_MIN_HEIGHT)
# create placeholder image
api = ImageAPI()
api.create_image(w, h, PLACEHOLDER_BG_COLOR)
# placeholder text
text = params.get('t', "%s x %s" % (w, h))
# calculate best font size
font_size_auto = min(min(w/4, h/4), 40)
font_size = int(params.get('ts', font_size_auto))
# write on center middle
api.write_on_center(text, font_size, PLACEHOLDER_TEXT_COLOR)
# write to response
response = HttpResponse (mimetype="image/png")
api.image.save(response, "PNG")
return response
def default(request):
url = request.GET.get("url", "").strip()
if not url:
return HttpResponseBadRequest("missing url parameter")
# instantiate new API
api = ImageAPI()
try:
api.open_from_internet(url)
except urllib2.HTTPError as e:
logger.debug("could not download image from %s reason: %s" % (url, e))
return HttpResponseBadRequest("invalid url")
except ValueError as e: # unknown url type
logger.debug("could not use image url %s reason: %s" % (url, e))
return HttpResponseBadRequest("invalid url")
except IOError as e:
logger.debug("could not process image from %s reason: %s" % (url, e))
return HttpResponseBadRequest("invalid url")
padding_size = request.GET.get("bp", BORDER_PADDING)
border_size = request.GET.get("bs", BORDER_SIZE)
fill_color = request.GET.get("bfc", BORDER_FILL_COLOR)
border_color = request.GET.get("bc", BORDER_COLOR)
# apply border with default values
api.apply_border(int(padding_size), int(border_size), fill_color, border_color)
# write to response
response = HttpResponse(mimetype="image/png")
api.image.save(response, "PNG")
return response
def _get_eyes(request, url):
cache_key = create_cache_key({"url": url, "type": "eyes"})
# download image from internet
api = ImageAPI()
api.open_from_internet(url)
# try to get from cache
faces = cache.get(cache_key)
if faces is not None:
logger.debug("found faces in cache for %s" % url)
else:
# identify faces
faces = detect_eyes_from_pil_image(api.image)
# put on cache for 1h
cache.set(cache_key, faces, 3600)
return api, faces
