#!/usr/bin/env python
# -*- coding: utf-8 -*-
#This file is part of PLCOpenEditor, a library implementing an IEC 61131-3 editor
#based on the plcopen standard.
#
#Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
#
#See COPYING file for copyrights details.
#
#This library 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 2.1 of the License, or (at your option) any later version.
#
#This library 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 library; if not, write to the Free Software
#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import wx
from graphics import *
#-------------------------------------------------------------------------------
# Helpers
#-------------------------------------------------------------------------------
VARIABLE_CLASSES_DICT = {INPUT : _("Input"),
INOUT : _("InOut"),
OUTPUT : _("Output")}
VARIABLE_CLASSES_DICT_REVERSE = dict(
[(value, key) for key, value in VARIABLE_CLASSES_DICT.iteritems()])
#-------------------------------------------------------------------------------
# Create New Variable Dialog
#-------------------------------------------------------------------------------
class FBDVariableDialog(wx.Dialog):
def __init__(self, parent, controller, transition = ""):
wx.Dialog.__init__(self, parent,
size=wx.Size(400, 380), title=_('Variable Properties'))
main_sizer = wx.FlexGridSizer(cols=1, hgap=0, rows=4, vgap=10)
main_sizer.AddGrowableCol(0)
main_sizer.AddGrowableRow(2)
column_sizer = wx.BoxSizer(wx.HORIZONTAL)
main_sizer.AddSizer(column_sizer, border=20,
flag=wx.GROW|wx.TOP|wx.LEFT|wx.RIGHT)
left_gridsizer = wx.FlexGridSizer(cols=1, hgap=0, rows=6, vgap=5)
left_gridsizer.AddGrowableCol(0)
column_sizer.AddSizer(left_gridsizer, 1, border=5,
flag=wx.GROW|wx.RIGHT)
class_label = wx.StaticText(self, label=_('Class:'))
left_gridsizer.AddWindow(class_label, flag=wx.GROW)
self.Class = wx.ComboBox(self, style=wx.CB_READONLY)
self.Bind(wx.EVT_COMBOBOX, self.OnClassChanged, self.Class)
left_gridsizer.AddWindow(self.Class, flag=wx.GROW)
expression_label = wx.StaticText(self, label=_('Expression:'))
left_gridsizer.AddWindow(expression_label, flag=wx.GROW)
self.Expression = wx.TextCtrl(self)
self.Bind(wx.EVT_TEXT, self.OnExpressionChanged, self.Expression)
left_gridsizer.AddWindow(self.Expression, flag=wx.GROW)
execution_order_label = wx.StaticText(self, label=_('Execution Order:'))
left_gridsizer.AddWindow(execution_order_label, flag=wx.GROW)
self.ExecutionOrder = wx.SpinCtrl(self, min=0, style=wx.SP_ARROW_KEYS)
self.Bind(wx.EVT_SPINCTRL, self.OnExecutionOrderChanged, self.ExecutionOrder)
left_gridsizer.AddWindow(self.ExecutionOrder, flag=wx.GROW)
right_gridsizer = wx.FlexGridSizer(cols=1, hgap=0, rows=2, vgap=5)
right_gridsizer.AddGrowableCol(0)
right_gridsizer.AddGrowableRow(1)
column_sizer.AddSizer(right_gridsizer, 1, border=5,
flag=wx.GROW|wx.LEFT)
name_label = wx.StaticText(self, label=_('Name:'))
right_gridsizer.AddWindow(name_label, flag=wx.GROW)
self.VariableName = wx.ListBox(self, style=wx.LB_SINGLE|wx.LB_SORT)
self.Bind(wx.EVT_LISTBOX, self.OnNameChanged, self.VariableName)
right_gridsizer.AddWindow(self.VariableName, flag=wx.GROW)
preview_label = wx.StaticText(self, label=_('Preview:'))
main_sizer.AddWindow(preview_label, border=20,
flag=wx.GROW|wx.LEFT|wx.RIGHT)
self.Preview = wx.Panel(self,
style=wx.TAB_TRAVERSAL|wx.SIMPLE_BORDER)
self.Preview.SetBackgroundColour(wx.Colour(255,255,255))
setattr(self.Preview, "GetDrawingMode", lambda:FREEDRAWING_MODE)
setattr(self.Preview, "GetScaling", lambda:None)
setattr(self.Preview, "IsOfType", controller.IsOfType)
self.Preview.Bind(wx.EVT_PAINT, self.OnPaint)
main_sizer.AddWindow(self.Preview, border=20,
flag=wx.GROW|wx.LEFT|wx.RIGHT)
button_sizer = self.CreateButtonSizer(wx.OK|wx.CANCEL|wx.CENTRE)
self.Bind(wx.EVT_BUTTON, self.OnOK, button_sizer.GetAffirmativeButton())
main_sizer.AddSizer(button_sizer, border=20,
flag=wx.ALIGN_RIGHT|wx.BOTTOM|wx.LEFT|wx.RIGHT)
self.SetSizer(main_sizer)
self.Transition = transition
self.Variable = None
self.VarList = []
self.MinVariableSize = None
for choice in VARIABLE_CLASSES_DICT.itervalues():
self.Class.Append(choice)
self.Class.SetStringSelection(VARIABLE_CLASSES_DICT[INPUT])
self.RefreshNameList()
self.Class.SetFocus()
def SetPreviewFont(self, font):
self.Preview.SetFont(font)
def RefreshNameList(self):
selected = self.VariableName.GetStringSelection()
var_class = VARIABLE_CLASSES_DICT_REVERSE[self.Class.GetStringSelection()]
self.VariableName.Clear()
self.VariableName.Append("")
for name, var_type, value_type in self.VarList:
if var_type != "Input" or var_class == INPUT:
self.VariableName.Append(name)
if selected != "" and self.VariableName.FindString(selected) != wx.NOT_FOUND:
self.VariableName.SetStringSelection(selected)
self.Expression.Enable(False)
else:
self.VariableName.SetStringSelection("")
#self.Expression.Enable(var_class == INPUT)
self.VariableName.Enable(self.VariableName.GetCount() > 0)
def SetMinVariableSize(self, size):
self.MinVariableSize = size
def SetVariables(self, vars):
self.VarList = vars
self.RefreshNameList()
def SetValues(self, values):
value_type = values.get("type", None)
value_name = values.get("name", None)
if value_type:
self.Class.SetStringSelection(VARIABLE_CLASSES_DICT[value_type])
self.RefreshNameList()
if value_name:
if self.VariableName.FindString(value_name) != wx.NOT_FOUND:
self.VariableName.SetStringSelection(value_name)
self.Expression.Enable(False)
else:
self.Expression.SetValue(value_name)
self.VariableName.Enable(False)
if "executionOrder" in values:
self.ExecutionOrder.SetValue(values["executionOrder"])
self.RefreshPreview()
def GetValues(self):
values = {}
values["type"] = VARIABLE_CLASSES_DICT_REVERSE[self.Class.GetStringSelection()]
expression = self.Expression.GetValue()
if self.Expression.IsEnabled() and expression != "":
values["name"] = expression
else:
values["name"] = self.VariableName.GetStringSelection()
values["value_type"] = None
for var_name, var_type, value_type in self.VarList:
if var_name == values["name"]:
values["value_type"] = value_type
values["width"], values["height"] = self.Variable.GetSize()
values["executionOrder"] = self.ExecutionOrder.GetValue()
return values
def OnOK(self, event):
message = None
expression = self.Expression.GetValue()
if self.Expression.IsEnabled():
value = expression
else:
value = self.VariableName.GetStringSelection()
if value == "":
message = _("At least a variable or an expression must be selected!")
elif value.upper() in IEC_KEYWORDS:
message = _("\"%s\" is a keyword. It can't be used!") % value
if message is not None:
message = wx.MessageDialog(self, message, _("Error"), wx.OK|wx.ICON_ERROR)
message.ShowModal()
message.Destroy()
else:
self.EndModal(wx.ID_OK)
def OnClassChanged(self, event):
self.RefreshNameList()
self.RefreshPreview()
event.Skip()
def OnNameChanged(self, event):
if self.VariableName.GetStringSelection() != "":
self.Expression.Enable(False)
elif VARIABLE_CLASSES_DICT_REVERSE[self.Class.GetStringSelection()] == INPUT:
self.Expression.Enable(True)
self.RefreshPreview()
event.Skip()
def OnExpressionChanged(self, event):
if self.Expression.GetValue() != "":
self.VariableName.Enable(False)
else:
self.VariableName.Enable(True)
self.RefreshPreview()
event.Skip()
def OnExecutionOrderChanged(self, event):
self.RefreshPreview()
event.Skip()
def RefreshPreview(self):
dc = wx.ClientDC(self.Preview)
dc.SetFont(self.Preview.GetFont())
dc.Clear()
expression = self.Expression.GetValue()
if self.Expression.IsEnabled() and expression != "":
name = expression
else:
name = self.VariableName.GetStringSelection()
type = ""
for var_name, var_type, value_type in self.VarList:
if var_name == name:
type = value_type
classtype = VARIABLE_CLASSES_DICT_REVERSE[self.Class.GetStringSelection()]
self.Variable = FBD_Variable(self.Preview, classtype, name, type, executionOrder = self.ExecutionOrder.GetValue())
width, height = self.MinVariableSize
min_width, min_height = self.Variable.GetMinSize()
width, height = max(min_width, width), max(min_height, height)
self.Variable.SetSize(width, height)
clientsize = self.Preview.GetClientSize()
x = (clientsize.width - width) / 2
y = (clientsize.height - height) / 2
self.Variable.SetPosition(x, y)
self.Variable.Draw(dc)
def OnPaint(self, event):
self.RefreshPreview()
event.Skip()