beremiz

fix problem when Beremiz is running without matiec installed

2017-08-25, Andrey Skvortsov
492e2cd6157e
fix problem when Beremiz is running without matiec installed

set matiec settings only once on first use of ProjectController class and give
user-friendly message on compilation about missing matiec
installation.


Traceback (most recent call last):
File "Beremiz.py", line 197, in
beremiz.Start()
File "Beremiz.py", line 192, in Start
self.CreateApplication()
File "Beremiz.py", line 130, in CreateApplication
self.BackgroundInitialization()
File "Beremiz.py", line 137, in BackgroundInitialization
self.ImportModules()
File "Beremiz.py", line 176, in ImportModules
import BeremizIDE
File
"BeremizIDE.py", line 76, in
from ProjectController import ProjectController, GetAddMenuItems,
MATIEC_ERROR_MODEL, ITEM_CONFNODE
File
"ProjectController.py", line 177, in
iec2c_cfg = Iec2CSettings()
File
"ProjectController.py", line 101, in __init__
self.ieclib_c_path = self.findLibCPath()
File
"ProjectController.py", line 135, in findLibCPath
os.path.join(self.ieclib_path, "C"),
File "/usr/lib/python2.7/posixpath.py", line 70, in join
elif path == '' or path.endswith('/'):
AttributeError: 'NoneType' object has no attribute 'endswith'
#!/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.
#
# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
#
# 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.
import wx
from controls.CustomStyledTextCtrl import faces
TOOLTIP_MAX_CHARACTERS = 30 # Maximum number of characters by line in ToolTip
TOOLTIP_MAX_LINE = 5 # Maximum number of line in ToolTip
TOOLTIP_WAIT_PERIOD = 0.5 # Wait period before displaying tooltip in second
# -------------------------------------------------------------------------------
# Custom ToolTip
# -------------------------------------------------------------------------------
class CustomToolTip(wx.PopupWindow):
"""
Class that implements a custom tool tip
"""
def __init__(self, parent, tip, restricted=True):
"""
Constructor
@param parent: Parent window
@param tip: Tip text (may be multiline)
@param restricted: Tool tip must follow size restriction in line and
characters number defined (default True)
"""
wx.PopupWindow.__init__(self, parent)
self.Restricted = restricted
self.SetBackgroundStyle(wx.BG_STYLE_CUSTOM)
self.SetTip(tip)
# Initialize text font style
self.Font = wx.Font(
faces["size"],
wx.SWISS,
wx.NORMAL,
wx.NORMAL,
faceName=faces["mono"])
self.Bind(wx.EVT_PAINT, self.OnPaint)
def SetFont(self, font):
"""
Set tool tip text font style
@param font: wx.Font object containing font style
"""
self.Font = font
self.RefreshTip()
def SetTip(self, tip):
"""
Set tool tip text
@param tip: Tool tip text
"""
if self.Restricted:
# Compute tip text line return
self.Tip = []
for line in tip.splitlines():
if line != "":
words = line.split()
new_line = words[0]
for word in words[1:]:
# Add word to line
if len(new_line + " " + word) <= TOOLTIP_MAX_CHARACTERS:
new_line += " " + word
# Create new line
else:
self.Tip.append(new_line)
new_line = word
self.Tip.append(new_line)
else:
self.Tip.append(line)
# Restrict number of lines
if len(self.Tip) > TOOLTIP_MAX_LINE:
self.Tip = self.Tip[:TOOLTIP_MAX_LINE]
# Add ... to the end of last line to indicate that tool tip
# text is too long
if len(self.Tip[-1]) < TOOLTIP_MAX_CHARACTERS - 3:
self.Tip[-1] += "..."
else:
self.Tip[-1] = self.Tip[-1][:TOOLTIP_MAX_CHARACTERS - 3] + \
"..."
else:
self.Tip = tip.splitlines()
# Prevent to call wx method in non-wx threads
wx.CallAfter(self.RefreshTip)
def SetToolTipPosition(self, pos):
"""
Set tool tip position
@param pos: New tool tip position
"""
# Get screen size to prevent tool tip to go out of the screen
screen_width, screen_height = wx.GetDisplaySize()
# Calculate position of tool tip to stay in screen limits
tip_width, tip_height = self.GetToolTipSize()
self.SetPosition(wx.Point(
max(0, min(pos.x, screen_width - tip_width)),
max(0, min(pos.y, screen_height - tip_height))))
def GetToolTipSize(self):
"""
Get tool tip size according to tip text and restriction
@return: wx.Size(tool_tip_width, tool_tip_height)
"""
max_width = max_height = 0
# Create a memory DC for calculating text extent
dc = wx.MemoryDC()
dc.SetFont(self.Font)
# Compute max tip text size
for line in self.Tip:
w, h = dc.GetTextExtent(line)
max_width = max(max_width, w)
max_height += h
return wx.Size(max_width + 4, max_height + 4)
def RefreshTip(self):
"""
Refresh tip on screen
"""
# Prevent to call this function if tool tip destroyed
if self:
# Refresh tool tip size and position
self.SetClientSize(self.GetToolTipSize())
# Redraw tool tip
self.Refresh()
def OnPaint(self, event):
"""
Callback for Paint Event
@param event: Paint event
"""
# Get buffered paint DC for tool tip
dc = wx.AutoBufferedPaintDC(self)
dc.Clear()
# Set DC drawing style
dc.SetPen(wx.BLACK_PEN)
dc.SetBrush(wx.Brush(wx.Colour(255, 238, 170)))
dc.SetFont(self.Font)
# Draw Tool tip
dc.BeginDrawing()
tip_width, tip_height = self.GetToolTipSize()
# Draw background rectangle
dc.DrawRectangle(0, 0, tip_width, tip_height)
# Draw tool tip text
line_offset = 0
for line in self.Tip:
dc.DrawText(line, 2, line_offset + 2)
line_width, line_height = dc.GetTextExtent(line)
line_offset += line_height
dc.EndDrawing()
event.Skip()