class DisplayNode():
def __init__(self,
proxy_address=(PROXY_ADDRESS, PROXY_PORT),
web_address=(WEB_ADDRESS, WEB_PORT)):
self._proxy = Server('http://%s:%s' % proxy_address, allow_none=True)
# print "Proxy: ",proxy_address
self.start_server(proxy_address, web_address)
self.data = None
self.type = None
self.url = None
self.width = 0
self.height = 0
# FIXME: use introspection to define the methods (for autocompletion)
def start_server(self, proxy_address, web_address):
if not self.is_server_responding():
self._server = DisplayNodeServer(proxy_address, web_address)
if USE_MULTIPROCESSING:
#print "Multiprocessing version! "
self._server_process = Process(
target=self.__run_server_forever, args=())
self._server_process.start()
else:
thread.start_new_thread(self.__run_server_forever, ())
def __run_server_forever(self):
if USE_MULTIPROCESSING:
signal.signal(signal.SIGINT, self.__signal_handler_interrupt)
self._server.serve_forever()
def __signal_handler_interrupt(self, signal, frame):
print 'Shutting down DisplayNode server. '
sys.exit(0)
def is_server_responding(self):
socket.setdefaulttimeout(2)
try:
alive = self._proxy.is_alive(1)
except:
alive = False
socket.setdefaulttimeout(60)
return alive
def display(self,
content_type,
data={},
open_browser=False,
new_tab=True,
autoraise=False):
# if image: send png content
if content_type == "image":
buf = StringIO()
data.convert("RGB").save(buf, format="png")
data = Binary(buf.getvalue())
buf.close()
# if list of images: send list of png content
if content_type == "tipix":
if not type(data) == list:
raise ParameterError(
"Parameter for 'tipix' must be a list of images.")
# 1D array of images:
if is_an_image(data[0]):
for i in range(len(data)):
if not is_an_image(data[i]):
raise ParameterError(
"Parameter for 'tipix' must be a list of images.")
buf = StringIO()
data[i].convert("RGB").save(buf, format="png")
data[i] = Binary(buf.getvalue())
buf.close()
elif type(data[0]) == list:
for i in range(len(data)):
for j in range(len(data[i])):
if not is_an_image(data[i][j]):
raise ParameterError(
"Parameter for 'tipix' must be a list of images."
)
buf = StringIO()
data[i][j].convert("RGB").save(buf, format="png")
data[i][j] = Binary(buf.getvalue())
buf.close()
url = self._proxy.display({'type': content_type, 'data': data})
if open_browser:
if new_tab:
webbrowser.open_new_tab(url)
else:
webbrowser.open(url, autoraise=autoraise)
self.data = data
self.type = content_type
self.url = url
self.width = WIDTH #FIXME: obtain width and height from the server
self.height = HEIGHT
return self
def display_in_browser(self,
content_type,
data={},
new_tab=False,
autoraise=False):
self.display(content_type,
data,
open_browser=True,
new_tab=new_tab,
autoraise=autoraise)
return None
def _repr_html_(self):
# This method is for ipython notebook integration through Rich Display
return '<iframe src=%s width=%s height=%s frameborder=0></iframe>' % (
self.url, self.width, self.height)
class DisplayNode():
def __init__(self,proxy_address=(PROXY_ADDRESS,PROXY_PORT), web_address=(WEB_ADDRESS,WEB_PORT)):
self._proxy = Server('http://%s:%s'%proxy_address,allow_none=True)
# print "Proxy: ",proxy_address
self.start_server(proxy_address,web_address)
self.data = None
self.type = None
self.url = None
self.width = 0
self.height = 0
# FIXME: use introspection to define the methods (for autocompletion)
def start_server(self,proxy_address,web_address):
if not self.is_server_responding():
self._server = DisplayNodeServer(proxy_address,web_address)
if USE_MULTIPROCESSING:
#print "Multiprocessing version! "
self._server_process = Process( target=self.__run_server_forever, args=() )
self._server_process.start()
else:
thread.start_new_thread( self.__run_server_forever, () )
def __run_server_forever(self):
if USE_MULTIPROCESSING:
signal.signal(signal.SIGINT, self.__signal_handler_interrupt)
self._server.serve_forever()
def __signal_handler_interrupt(self, signal, frame):
print 'Shutting down DisplayNode server. '
sys.exit(0)
def is_server_responding(self):
socket.setdefaulttimeout(2)
try:
alive = self._proxy.is_alive(1)
except:
alive = False
socket.setdefaulttimeout(60)
return alive
def display(self,content_type,data={},open_browser=False,new_tab=True,autoraise=False):
# if image: send png content
if content_type=="image":
buf = StringIO()
data.convert("RGB").save(buf,format="png")
data = Binary(buf.getvalue())
buf.close()
# if list of images: send list of png content
if content_type=="tipix":
if not type(data)==list:
raise ParameterError("Parameter for 'tipix' must be a list of images.")
# 1D array of images:
if is_an_image(data[0]):
for i in range(len(data)):
if not is_an_image(data[i]):
raise ParameterError("Parameter for 'tipix' must be a list of images.")
buf = StringIO()
data[i].convert("RGB").save(buf,format="png")
data[i] = Binary(buf.getvalue())
buf.close()
elif type(data[0])==list:
for i in range(len(data)):
for j in range(len(data[i])):
if not is_an_image(data[i][j]):
raise ParameterError("Parameter for 'tipix' must be a list of images.")
buf = StringIO()
data[i][j].convert("RGB").save(buf,format="png")
data[i][j] = Binary(buf.getvalue())
buf.close()
url = self._proxy.display({'type':content_type,'data':data})
if open_browser:
if new_tab:
webbrowser.open_new_tab(url)
else:
webbrowser.open(url,autoraise=autoraise)
self.data = data
self.type = content_type
self.url = url
self.width = WIDTH #FIXME: obtain width and height from the server
self.height = HEIGHT
return self
def display_in_browser(self,content_type,data={},new_tab=False,autoraise=False):
self.display(content_type,data,open_browser=True,new_tab=new_tab,autoraise=autoraise)
return None
def _repr_html_(self):
# This method is for ipython notebook integration through Rich Display
return '<iframe src=%s width=%s height=%s frameborder=0></iframe>'%(self.url,self.width,self.height)
