Melodic/Noetic support

[k-okada]

rework of #39, as #39 mixes style change and noetic support, it also drop meldoic support.

[k-okada]

@knorth55 can you check if this works on your complex smach example? on both Meldoic / Noetic.

[knorth55]

this chage causes error in melodic.

[ERROR] [1658322156.379389]: bad callback: <bound method SmachViewerFrame._status_msg_update of <__main__.SmachViewerFrame; proxy of <Swig Object of type 'wxFrame *' at 0x55a2221c2ce0> >>
Traceback (most recent call last):
  File "/opt/ros/melodic/lib/python2.7/dist-packages/rospy/topics.py", line 750, in _invoke_callback
    cb(msg)
  File "/home/knorth55/ros/melodic/src/ros-visualization/executive_smach_visualization/smach_viewer/scripts/smach_viewer.py", line 879, in _status_msg_update
    if container.update_status(msg):
  File "/home/knorth55/ros/melodic/src/ros-visualization/executive_smach_visualization/smach_viewer/scripts/smach_viewer.py", line 217, in update_status
    self._local_data._data = self._load_local_data(msg)
  File "/home/knorth55/ros/melodic/src/ros-visualization/executive_smach_visualization/smach_viewer/scripts/smach_viewer.py", line 191, in _load_local_data
    local_data = pickle.loads(base64.b64decode(msg.local_data))
  File "/usr/lib/python2.7/base64.py", line 78, in b64decode
    raise TypeError(msg)
TypeError: Incorrect padding

[knorth55]

I haven't checked yet, but this may be caused by multibyte language...

[knorth55]

Actually it is not related to multibyte language.
we have same error with roseus_smach/sample/state-machine-ros-sample.l

[k-okada]

I think it is fixed now.

[knorth55]

Yes, thank you.

[knorth55]

Noetic is not yet tested, but I tested in Melodic.

I tried with english (singlebyte language) and it works in Melodic.
But I merged #40 to test with multibyte japanese but I got the following error.
I don't get this error in #40, so this is a bit weird...

[ERROR] [1658325349.225043]: label width 40 causes error
[ERROR] [1658325349.226524]: maybe multibyte word is in your label.
[ERROR] [1658325349.227478]: 'ascii' codec can't decode byte 0xe4 in position 2299: ordinal not in range(128)
[ERROR] [1658325349.228376]: changing width label width to 41
Exception in thread Thread-6:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 801, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/threading.py", line 754, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/home/knorth55/ros/melodic/src/ros-visualization/executive_smach_visualization/smach_viewer/scripts/smach_viewer.py", line 1090, in _update_graph
    self.widget.subgraph_shapes,
AttributeError: 'WxDotWindow' object has no attribute 'subgraph_shapes'

[k-okada]

@knorth55 If you revert, you can show Japanese on melodic

-    parser = XDotParser(xdotcode)
+    parser = MyXDotParser(bytes(str(xdotcode).encode("utf-8")))

[knorth55]

@k-okada

    parser = XDotParser(xdotcode)

works.

    parser = MyXDotParser(xdotcode)

does not works.

So, we should modify MyXDotParser to support multibyte language?

[knorth55]

@k-okada I make a PR for checking in melodic and noetic k-okada#1 . Noetic is WIP.