class CommSocket(object):
"""
A websocket for interactive communication between the plot in
the browser and the server.
In addition to the methods required by tornado, it is required to
have two callback methods:
- ``send_json(json_content)`` is called by matplotlib when
it needs to send json to the browser. `json_content` is
a JSON tree (Python dictionary), and it is the responsibility
of this implementation to encode it as a string to send over
the socket.
- ``send_binary(blob)`` is called to send binary image data
to the browser.
"""
supports_binary = False
def __init__(self, manager):
self.manager = manager
self.uuid = uuid()
#display(HTML("<div id='%s'></div>"%self.uuid))
self.comm = Comm('matplotlib', data={'id': self.uuid})
def open(self):
# Register the websocket with the FigureManager.
self.manager.add_web_socket(self)
self.comm.on_msg(self.on_message)
def on_close(self):
# When the socket is closed, deregister the websocket with
# the FigureManager.
self.manager.remove_web_socket(self)
self.comm.close()
def send_json(self, content):
self.comm.send({'data': json.dumps(content)})
def send_binary(self, blob):
data_uri = "data:image/png;base64,{0}".format(b64encode(blob))
self.comm.send({'data': data_uri})
def on_message(self, message):
# The 'supports_binary' message is relevant to the
# websocket itself. The other messages get passed along
# to matplotlib as-is.
# Every message has a "type" and a "figure_id".
message = json.loads(message['content']['data'])
if message['type'] == 'supports_binary':
self.supports_binary = message['value']
else:
self.manager.handle_json(message)
class CommSocket(object):
"""
A websocket for interactive communication between the plot in
the browser and the server.
In addition to the methods required by tornado, it is required to
have two callback methods:
- ``send_json(json_content)`` is called by matplotlib when
it needs to send json to the browser. `json_content` is
a JSON tree (Python dictionary), and it is the responsibility
of this implementation to encode it as a string to send over
the socket.
- ``send_binary(blob)`` is called to send binary image data
to the browser.
"""
supports_binary = False
def __init__(self, manager):
self.manager = manager
self.uuid = uuid()
#display(HTML("<div id='%s'></div>"%self.uuid))
self.comm = Comm('matplotlib', data={'id': self.uuid})
def open(self):
# Register the websocket with the FigureManager.
self.manager.add_web_socket(self)
self.comm.on_msg(self.on_message)
def on_close(self):
# When the socket is closed, deregister the websocket with
# the FigureManager.
self.manager.remove_web_socket(self)
self.comm.close()
def send_json(self, content):
self.comm.send({'data': json.dumps(content)})
def send_binary(self, blob):
data_uri = "data:image/png;base64,{0}".format(b64encode(blob))
self.comm.send({'data': data_uri})
def on_message(self, message):
# The 'supports_binary' message is relevant to the
# websocket itself. The other messages get passed along
# to matplotlib as-is.
# Every message has a "type" and a "figure_id".
message = json.loads(message['content']['data'])
if message['type'] == 'supports_binary':
self.supports_binary = message['value']
else:
self.manager.handle_json(message)
