dialogs/SFCDivergenceDialog.py
author Andrey Skvortsov <andrej.skvortzov@gmail.com>
Mon, 21 Aug 2017 21:55:18 +0300
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# This file is part of Beremiz, a Integrated Development Environment for
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# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
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#
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# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
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# Copyright (C) 2017: Andrey Skvortsov <andrej.skvortzov@gmail.com>
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#
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# See COPYING file for copyrights details.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
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import wx
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from graphics.GraphicCommons import SELECTION_DIVERGENCE, \
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    SELECTION_CONVERGENCE, SIMULTANEOUS_DIVERGENCE, SIMULTANEOUS_CONVERGENCE
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from graphics.SFC_Objects import SFC_Divergence
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from BlockPreviewDialog import BlockPreviewDialog
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# -------------------------------------------------------------------------------
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#                         Create New Divergence Dialog
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# -------------------------------------------------------------------------------
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class SFCDivergenceDialog(BlockPreviewDialog):
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    """
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    Class that implements a dialog for defining parameters for creating a new
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    divergence graphic element
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    """
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    def __init__(self, parent, controller, tagname, poss_div_types=None):
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        """
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        Constructor
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        @param parent: Parent wx.Window of dialog for modal
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        @param controller: Reference to project controller
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        @param tagname: Tagname of project POU edited
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        @param poss_div_types: Types of divergence that will be available in the dialog window
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        """
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        BlockPreviewDialog.__init__(self, parent, controller, tagname,
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                                    title=_('Create a new divergence or convergence'))
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        # Init common sizers
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        self._init_sizers(2, 0, 7, None, 2, 1)
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        # Create label for divergence type
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        type_label = wx.StaticText(self, label=_('Type:'))
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        self.LeftGridSizer.AddWindow(type_label, flag=wx.GROW)
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        # Create radio buttons for selecting divergence type
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        divergence_buttons = [
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            (SELECTION_DIVERGENCE, _('Selection Divergence')),
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            (SELECTION_CONVERGENCE, _('Selection Convergence')),
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            (SIMULTANEOUS_DIVERGENCE, _('Simultaneous Divergence')),
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            (SIMULTANEOUS_CONVERGENCE, _('Simultaneous Convergence'))]
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        poss_div_btns = []
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        if poss_div_types is not None:
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            for val in poss_div_types:
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                poss_div_btns.append(divergence_buttons[val])
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        else:
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            poss_div_btns = divergence_buttons
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        self.TypeRadioButtons = {}
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        first = True
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        focusbtn = None
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        for type, label in poss_div_btns:
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            radio_button = wx.RadioButton(self, label=label,
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                                          style=(wx.RB_GROUP if first else 0))
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            radio_button.SetValue(first)
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            self.Bind(wx.EVT_RADIOBUTTON, self.OnTypeChanged, radio_button)
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            self.LeftGridSizer.AddWindow(radio_button, flag=wx.GROW)
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            self.TypeRadioButtons[type] = radio_button
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            if first:
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                focusbtn = type
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            first = False
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        # Create label for number of divergence sequences
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        sequences_label = wx.StaticText(self,
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                                        label=_('Number of sequences:'))
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        self.LeftGridSizer.AddWindow(sequences_label, flag=wx.GROW)
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        # Create spin control for defining number of divergence sequences
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        self.Sequences = wx.SpinCtrl(self, min=2, max=20, initial=2)
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        self.Bind(wx.EVT_SPINCTRL, self.OnSequencesChanged, self.Sequences)
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        self.LeftGridSizer.AddWindow(self.Sequences, flag=wx.GROW)
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        # Add preview panel and associated label to sizers
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        self.RightGridSizer.AddWindow(self.PreviewLabel, flag=wx.GROW)
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        self.RightGridSizer.AddWindow(self.Preview, flag=wx.GROW)
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        # Add buttons sizer to sizers
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        self.MainSizer.AddSizer(
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            self.ButtonSizer, border=20,
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            flag=wx.ALIGN_RIGHT | wx.BOTTOM | wx.LEFT | wx.RIGHT)
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        self.Fit()
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        # Selection divergence radio button is default control having keyboard
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        # focus
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        self.TypeRadioButtons[focusbtn].SetFocus()
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    def GetMinElementSize(self):
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        """
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        Get minimal graphic element size
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        @return: Tuple containing minimal size (width, height) or None if no
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        element defined
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        """
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        return self.Element.GetMinSize(True)
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    def GetDivergenceType(self):
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        """
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        Return type selected for SFC divergence
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        @return: Type selected (None if not found)
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        """
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        # Go through radio buttons and return type associated to the one that
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        # is selected
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        for type, control in self.TypeRadioButtons.iteritems():
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            if control.GetValue():
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                return type
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        return None
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    def GetValues(self):
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        """
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        Set default SFC divergence parameters
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        @param values: Divergence parameters values
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        """
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        return {"type": self.GetDivergenceType(),
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                "number": self.Sequences.GetValue()}
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    def OnTypeChanged(self, event):
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        """
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        Called when SFC divergence type changed
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        @param event: wx.RadioButtonEvent
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        """
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        self.RefreshPreview()
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        event.Skip()
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    def OnSequencesChanged(self, event):
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        """
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        Called when SFC divergence number of sequences changed
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        @param event: wx.SpinEvent
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        """
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        self.RefreshPreview()
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        event.Skip()
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    def RefreshPreview(self):
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        """
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        Refresh preview panel of graphic element
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        Override BlockPreviewDialog function
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        """
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        # Set graphic element displayed, creating a SFC divergence
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        self.Element = SFC_Divergence(self.Preview,
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                                      self.GetDivergenceType(),
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                                      self.Sequences.GetValue())
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        # Call BlockPreviewDialog function
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        BlockPreviewDialog.RefreshPreview(self)