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path: root/TurtleArt/tacollaboration.py
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-rw-r--r--TurtleArt/tacollaboration.py210
1 files changed, 121 insertions, 89 deletions
diff --git a/TurtleArt/tacollaboration.py b/TurtleArt/tacollaboration.py
index da77e0a..9081edc 100644
--- a/TurtleArt/tacollaboration.py
+++ b/TurtleArt/tacollaboration.py
@@ -46,6 +46,7 @@ class Collaboration():
self._tw = tw
self._tw.send_event = self.send_event
self._activity = activity
+ self._setup_dispatch_table()
def setup(self):
# TODO: hand off role of master is sharer leaves
@@ -61,6 +62,22 @@ class Collaboration():
self._activity.connect('shared', self._shared_cb)
self._activity.connect('joined', self._joined_cb)
+ def _setup_dispatch_table(self):
+ self._processing_methods = {
+ 't' : self._turtle_request,
+ 'T' : self._receive_turtle_dict,
+ 'f' : self._move_forward,
+ 'a' : self._move_in_arc,
+ 'r' : self._rotate_turtle,
+ 'x' : self._setxy,
+ 'W' : self._draw_text,
+ 'c' : self._set_pen_color,
+ 'g' : self._set_pen_gray_level,
+ 's' : self._set_pen_shade,
+ 'w' : self._set_pen_width,
+ 'p' : self._set_pen_state
+ }
+
def _shared_cb(self, activity):
self._shared_activity = self._activity._shared_activity
if self._shared_activity is None:
@@ -149,103 +166,22 @@ class Collaboration():
_logger.debug(event)
self.send_event(event)
- def event_received_cb(self, text):
+ def event_received_cb(self, event_message):
"""
Events are sent as a tuple, nick|cmd, where nick is a turle name
and cmd is a turtle event. Everyone gets the turtle dictionary from
the sharer and watches for 't' events, which indicate that a new
turtle has joined.
"""
- if len(text) == 0:
+ if len(event_message) == 0:
return
- # Save active Turtle
+
+ # Save active Turtle
save_active_turtle = self._tw.active_turtle
- e = text.split("|", 2)
- text = e[1]
- if e[0] == 't': # request for turtle dictionary
- if text > 0:
- [nick, colors] = data_from_string(text)
- if nick != self._tw.nick:
- # There may not be a turtle dictionary.
- if hasattr(self, "turtle_dictionary"):
- self.turtle_dictionary[nick] = colors
- else:
- self.turtle_dictionary = {nick: colors}
- # Add new turtle for the joiner.
- self._tw.canvas.set_turtle(nick, colors)
- # Sharer should send turtle dictionary.
- if self.initiating:
- text = data_to_string(self.turtle_dictionary)
- self.send_event("T|" + text)
- elif e[0] == 'T': # Receiving the turtle dictionary.
- if self.waiting_for_turtles:
- if len(text) > 0:
- self.turtle_dictionary = data_from_string(text)
- for nick in self.turtle_dictionary:
- if nick != self._tw.nick:
- colors = self.turtle_dictionary[nick]
- # add new turtle for the joiner
- self._tw.canvas.set_turtle(nick, colors)
- self.waiting_for_turtles = False
- elif e[0] == 'f': # move a turtle forward
- if len(text) > 0:
- [nick, x] = data_from_string(text)
- if nick != self._tw.nick:
- self._tw.canvas.set_turtle(nick)
- self._tw.canvas.forward(x, False)
- elif e[0] == 'a': # move a turtle in an arc
- if len(text) > 0:
- [nick, [a, r]] = data_from_string(text)
- if nick != self._tw.nick:
- self._tw.canvas.set_turtle(nick)
- self._tw.canvas.arc(a, r, False)
- elif e[0] == 'r': # rotate turtle
- if len(text) > 0:
- [nick, h] = data_from_string(text)
- if nick != self._tw.nick:
- self._tw.canvas.set_turtle(nick)
- self._tw.canvas.seth(h, False)
- elif e[0] == 'x': # set turtle xy position
- if len(text) > 0:
- [nick, [x, y]] = data_from_string(text)
- if nick != self._tw.nick:
- self._tw.canvas.set_turtle(nick)
- self._tw.canvas.setxy(x, y, False)
- elif e[0] == 'W': # draw text
- if len(text) > 0:
- [nick, [label, x, y, size, w]] = data_from_string(text)
- if nick != self._tw.nick:
- self._tw.canvas.draw_text(label, x, y, size, w, False)
- elif e[0] == 'c': # set turtle pen color
- if len(text) > 0:
- [nick, x] = data_from_string(text)
- if nick != self._tw.nick:
- self._tw.canvas.set_turtle(nick)
- self._tw.canvas.setcolor(x, False)
- elif e[0] == 'g': # set turtle pen gray level
- if len(text) > 0:
- [nick, x] = data_from_string(text)
- if nick != self._tw.nick:
- self._tw.canvas.set_turtle(nick)
- self._tw.canvas.setgray(x, False)
- elif e[0] == 's': # set turtle pen shade
- if len(text) > 0:
- [nick, x] = data_from_string(text)
- if nick != self._tw.nick:
- self._tw.canvas.set_turtle(nick)
- self._tw.canvas.setshade(x, False)
- elif e[0] == 'w': # set turtle pen width
- if len(text) > 0:
- [nick, x] = data_from_string(text)
- if nick != self._tw.nick:
- self._tw.canvas.set_turtle(nick)
- self._tw.canvas.setpensize(x, False)
- elif e[0] == 'p': # set turtle pen state
- if len(text) > 0:
- [nick, x] = data_from_string(text)
- if nick != self._tw.nick:
- self._tw.canvas.set_turtle(nick)
- self._tw.canvas.setpen(x, False)
+
+ command, payload = text.split("|", 2)
+ self._processing_methods[command](payload)
+
# Restore active Turtle
self._tw.canvas.set_turtle(self._tw.turtles.get_turtle_key(
save_active_turtle))
@@ -255,6 +191,102 @@ class Collaboration():
if hasattr(self, 'chattube') and self.chattube is not None:
self.chattube.SendText(entry)
+ def _turtle_request(self, payload):
+ if payload > 0:
+ [nick, colors] = data_from_string(payload)
+ if nick != self._tw.nick:
+ # There may not be a turtle dictionary.
+ if hasattr(self, "turtle_dictionary"):
+ self.turtle_dictionary[nick] = colors
+ else:
+ self.turtle_dictionary = {nick: colors}
+ # Add new turtle for the joiner.
+ self._tw.canvas.set_turtle(nick, colors)
+ # Sharer should send turtle dictionary.
+ if self.initiating:
+ event_payload = data_to_string(self.turtle_dictionary)
+ self.send_event("T|" + event_payload)
+
+ def _receive_turtle_dict(self, payload):
+ if self.waiting_for_turtles:
+ if len(payload) > 0:
+ self.turtle_dictionary = data_from_string(payload)
+ for nick in self.turtle_dictionary:
+ if nick != self._tw.nick:
+ colors = self.turtle_dictionary[nick]
+ # add new turtle for the joiner
+ self._tw.canvas.set_turtle(nick, colors)
+ self.waiting_for_turtles = False
+
+ def _move_forward(self, payload):
+ if len(payload) > 0:
+ [nick, x] = data_from_string(payload)
+ if nick != self._tw.nick:
+ self._tw.canvas.set_turtle(nick)
+ self._tw.canvas.forward(x, False)
+
+ def _move_in_arc(self, payload):
+ if len(payload) > 0:
+ [nick, [a, r]] = data_from_string(payload)
+ if nick != self._tw.nick:
+ self._tw.canvas.set_turtle(nick)
+ self._tw.canvas.arc(a, r, False)
+
+ def _rotate_turtle(self, payload):
+ if len(payload) > 0:
+ [nick, h] = data_from_string(payload)
+ if nick != self._tw.nick:
+ self._tw.canvas.set_turtle(nick)
+ self._tw.canvas.seth(h, False)
+
+ def _setxy(self, payload):
+ if len(payload) > 0:
+ [nick, [x, y]] = data_from_string(payload)
+ if nick != self._tw.nick:
+ self._tw.canvas.set_turtle(nick)
+ self._tw.canvas.setxy(x, y, False)
+
+ def _draw_text(self, payload):
+ if len(payload) > 0:
+ [nick, [label, x, y, size, w]] = data_from_string(payload)
+ if nick != self._tw.nick:
+ self._tw.canvas.draw_text(label, x, y, size, w, False)
+
+ def _set_pen_color(self, payload):
+ if len(payload) > 0:
+ [nick, x] = data_from_string(payload)
+ if nick != self._tw.nick:
+ self._tw.canvas.set_turtle(nick)
+ self._tw.canvas.setcolor(x, False)
+
+ def _set_pen_gray_level(self, payload):
+ if len(payload) > 0:
+ [nick, x] = data_from_string(payload)
+ if nick != self._tw.nick:
+ self._tw.canvas.set_turtle(nick)
+ self._tw.canvas.setgray(x, False)
+
+ def _set_pen_shade(self, payload):
+ if len(payload) > 0:
+ [nick, x] = data_from_string(payload)
+ if nick != self._tw.nick:
+ self._tw.canvas.set_turtle(nick)
+ self._tw.canvas.setshade(x, False)
+
+ def _set_pen_width(self, payload):
+ if len(payload) > 0:
+ [nick, x] = data_from_string(payload)
+ if nick != self._tw.nick:
+ self._tw.canvas.set_turtle(nick)
+ self._tw.canvas.setpensize(x, False)
+
+ def _set_pen_state(self, payload):
+ if len(payload) > 0:
+ [nick, x] = data_from_string(payload)
+ if nick != self._tw.nick:
+ self._tw.canvas.set_turtle(nick)
+ self._tw.canvas.setpen(x, False)
+
def _get_dictionary(self):
d = {self._get_nick(): self._get_colors()}
return d