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Fix wxHMI example after upgrading wxGlade

2018-08-13, Andrey Skvortsov

64bb520009f3

Fix wxHMI example after upgrading wxGlade

Newer wxGlade generates code to initialize GridSizer's with empty
elements.

...
grid_sizer_1.Add(self.window_1, 1, wx.ALIGN_CENTER, 0)
sizer_2.Add((0, 0), 0, 0, 0)
sizer_2.Add((0, 0), 0, 0, 0)
sizer_2.Add((0, 0), 0, 0, 0)
sizer_2.Add((0, 0), 0, 0, 0)
...

That causes following traceback, if new buttons are added
to already full sizer.

PLCobject : Traceback (most recent call last):

File "./Beremiz_service.py", line 389, in default_evaluator
res = (tocall(*args, **kwargs), None)

File "/tmp/tmpQS8ct2/runtime_0.py", line 540, in _runtime_0_start
wx.MessageBox(_("Please stop PLC to close"))

File "/tmp/tmpQS8ct2/runtime_0.py", line 504, in Init
lambda axis:( MakeButtonFunc(self, sizer, axis+"axisMinus"),

File "/tmp/tmpQS8ct2/runtime_0.py", line 502, in
lambda btname: MakeButtonFunc(self, sizer, btname), ActionButtons)

File "/tmp/tmpQS8ct2/runtime_0.py", line 461, in MakeButtonFunc
print sizer, btname

File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk3/wx/_core.py", line 14453, in Add
return _core_.Sizer_Add(*args, **kwargs)

PyAssertionError: C++ assertion "Assert failure" failed at
../src/common/sizer.cpp(1401) in DoInsert(): too many items (11 > 2*5)
in grid sizer (maybe you should omit the number of either rows or
columns?)

Tested with wxGlade version 0.8.3
Closes #41

#!/usr/bin/env python

# -*- coding: utf-8 -*-

# This file is part of Beremiz, a Integrated Development Environment for

# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.

# See COPYING file for copyrights details.

# This program is free software; you can redistribute it and/or

# modify it under the terms of the GNU General Public License

# as published by the Free Software Foundation; either version 2

# of the License, or (at your option) any later version.

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

from __future__ import absolute_import

import os

import sys

# import pytest

# import xvfbwrapper

def init_environment():

"""Append module root directory to sys.path"""

try:

import Beremiz as _Beremiz

except ImportError:

sys.path.append(

os.path.abspath(

os.path.join(

os.path.dirname(__file__), '..', '..')

)

init_environment()

# Something seems to be broken in Beremiz application,

# because after tests in test_application.py during Xvfb shutdown

# pytest returns error message:

# pytest: Fatal IO error 11 (Die Ressource ist zur Zeit nicht verfügbar) on X server :2821.

# As a result of that pytest returns code 1 as some tests were failed,

# but they aren't.

# To avoid this Xvfb is launched and killed not by pytest.

# $ Xvfb :42 -screen 0 1280x1024x24 &

# $ export DISPLAY=:42

# $ pytest --timeout=10 ./tests/tools

# $ pkill -9 Xvfb

# TODO: find root of this problem.

# vdisplay = None

# @pytest.fixture(scope="session", autouse=True)

# def start_xvfb_server(request):

# global vdisplay

# vdisplay = xvfbwrapper.Xvfb(width=1280, height=720)

# vdisplay.start()

# request.addfinalizer(stop_xvfb_server)

# def stop_xvfb_server():

# if vdisplay is not None:

# vdisplay.stop()

beremiz