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#!/usr/bin/env python

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

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#This file is part of PLCOpenEditor, a library implementing an IEC 61131-3 editor

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#based on the plcopen standard. 

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#

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#Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD

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#

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#See COPYING file for copyrights details.

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#

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

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#modify it under the terms of the GNU General Public

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#License as published by the Free Software Foundation; either

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#version 2.1 of the License, or (at your option) any later version.

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#

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#This library 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 GNU

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#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

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

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#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

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    25

import wx

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    27

from GraphicCommons import *

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from plcopen.structures import *

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    30

def GetWireSize(block):

    31

    if isinstance(block, SFC_Step):

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        return SFC_WIRE_MIN_SIZE + block.GetActionExtraLineNumber() * SFC_ACTION_MIN_SIZE[1]

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    else:

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        return SFC_WIRE_MIN_SIZE

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    36

#-------------------------------------------------------------------------------

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#                         Sequencial Function Chart Step

    38

#-------------------------------------------------------------------------------

    39

    40

"""

    41

Class that implements the graphic representation of a step

    42

"""

    43

    44

class SFC_Step(Graphic_Element):

    45

    46

    # Create a new step

    47

    def __init__(self, parent, name, initial = False, id = None):

    48

        Graphic_Element.__init__(self, parent)

    49

        self.Name = name

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        self.Initial = initial

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        self.Id = id

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        self.Size = wx.Size(SFC_STEP_DEFAULT_SIZE[0], SFC_STEP_DEFAULT_SIZE[1])

    53

        # Create an input and output connector

    54

        if not self.Initial:

    55

            self.Input = Connector(self, "", None, wx.Point(self.Size[0] / 2, 0), NORTH)

    56

        else:

    57

            self.Input = None

    58

        self.Output = None

    59

        self.Action = None

    60

    61

    # Destructor

    62

    def __del__(self):

    63

        self.Input = None

    64

        self.Output = None

    65

        self.Action = None

    66

    78

    # Delete this step by calling the appropriate method

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    def Delete(self):

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        self.Parent.DeleteStep(self)

    81

    82

    # Unconnect input and output

    83

    def Clean(self):

    84

        if self.Input:

    85

            self.Input.UnConnect(delete = self.Parent.GetDrawingMode() == FREEDRAWING_MODE)

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        if self.Output:

    87

            self.Output.UnConnect(delete = self.Parent.GetDrawingMode() == FREEDRAWING_MODE)

    88

        if self.Action:

    89

            self.Action.UnConnect(delete = self.Parent.GetDrawingMode() == FREEDRAWING_MODE)

    90

    91

    # Add output connector to step

    92

    def AddInput(self):

    93

        if not self.Input:

    94

            self.Input = Connector(self, "", None, wx.Point(self.Size[0] / 2, 0), NORTH)

    95

            self.RefreshBoundingBox()

    96

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    # Remove output connector from step

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    def RemoveInput(self):

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        if self.Input:

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            self.Input.UnConnect()

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            self.Input = None

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            self.RefreshBoundingBox()

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   104

    # Add output connector to step

   105

    def AddOutput(self):

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        if not self.Output:

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            self.Output = Connector(self, "", None, wx.Point(self.Size[0] / 2, self.Size[1]), SOUTH)

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            self.RefreshBoundingBox()

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   110

    # Remove output connector from step

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    def RemoveOutput(self):

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        if self.Output:

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            self.Output.UnConnect()

   114

            self.Output = None

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            self.RefreshBoundingBox()

   116

   117

    # Add action connector to step

   118

    def AddAction(self):

   119

        if not self.Action:

   120

            self.Action = Connector(self, "", None, wx.Point(self.Size[0], self.Size[1] / 2), EAST)

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            self.RefreshBoundingBox()

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   123

    # Remove action connector from step

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    def RemoveAction(self):

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        if self.Action:

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            self.Action.UnConnect()

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            self.Action = None

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            self.RefreshBoundingBox()

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   130

    # Refresh the step bounding box

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    def RefreshBoundingBox(self):

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        dc = wx.ClientDC(self.Parent)

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        # Calculate the bounding box size

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        if self.Action:

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            bbx_width = self.Size[0] + CONNECTOR_SIZE

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        else:

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            bbx_width = self.Size[0]

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        if self.Initial:

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            bbx_y = self.Pos.y

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            bbx_height = self.Size[1]

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            if self.Output:

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                bbx_height += CONNECTOR_SIZE

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        else:

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            bbx_y = self.Pos.y - CONNECTOR_SIZE

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            bbx_height = self.Size[1] + CONNECTOR_SIZE

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            if self.Output:

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                bbx_height += CONNECTOR_SIZE

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        #self.BoundingBox = wx.Rect(self.Pos.x, bbx_y, bbx_width + 1, bbx_height + 1)

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        self.BoundingBox = wx.Rect(self.Pos.x, self.Pos.y, self.Size[0] + 1, self.Size[1] + 1)

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   151

    # Refresh the positions of the step connectors

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    def RefreshConnectors(self):

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        # Update input position if it exists

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        if self.Input:

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            self.Input.SetPosition(wx.Point(self.Size[0] / 2, 0))

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        # Update output position

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        if self.Output:

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            self.Output.SetPosition(wx.Point(self.Size[0] / 2, self.Size[1]))

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        # Update action position if it exists

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        if self.Action:

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            self.Action.SetPosition(wx.Point(self.Size[0], self.Size[1] / 2))

   162

        self.RefreshConnected()

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   164

    # Refresh the position of wires connected to step

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    def RefreshConnected(self, exclude = []):

   166

        if self.Input:

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            self.Input.MoveConnected(exclude)

   168

        if self.Output:

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            self.Output.MoveConnected(exclude)

   170

        if self.Action:

   171

            self.Action.MoveConnected(exclude)

   172

   173

    # Returns the step connector that starts with the point given if it exists 

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    def GetConnector(self, position, name = None):

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        # if a name is given

   176

        if name:

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            # Test input, output and action connector if they exists

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            if self.Input and name == self.Input.GetName():

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                return self.Input

   180

            if self.Output and name == self.Output.GetName():

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                return self.Output

   182

            if self.Action and name == self.Action.GetName():

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                return self.Action

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        # Test input connector if it exists

   185

        if self.Input:

   186

            input_pos = self.Input.GetRelPosition()

   187

            if position.x == self.Pos.x + input_pos.x and position.y == self.Pos.y + input_pos.y:

   188

                return self.Input

   189

        # Test output connector if it exists

   190

        if self.Output:

   191

            output_pos = self.Output.GetRelPosition()

   192

            if position.x == self.Pos.x + output_pos.x and position.y == self.Pos.y + output_pos.y:

   193

                return self.Output

   194

        # Test action connector if it exists

   195

        if self.Action:

   196

            action_pos = self.Action.GetRelPosition()

   197

            if position.x == self.Pos.x + action_pos.x and position.y == self.Pos.y + action_pos.y:

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                return self.Action

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        return None

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    # Returns input and output step connectors 

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    def GetConnectors(self):

   203

        return {"input":self.Input,"output":self.Output,"action":self.Action}

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   205

    # Test if point given is on step input or output connector

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    def TestConnector(self, pt, exclude=True):

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        # Test input connector if it exists

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        if self.Input and self.Input.TestPoint(pt, exclude):

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            return self.Input

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        # Test output connector

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        if self.Output and self.Output.TestPoint(pt, exclude):

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            return self.Output

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        # Test action connector

   214

        if self.Action and self.Action.TestPoint(pt, exclude):

   215

            return self.Action

   216

        return None

   217

   218

    # Changes the step name

   219

    def SetName(self, name):

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        self.Name = name

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   222

    # Returns the step name

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    def GetName(self):

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        return self.Name

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   226

    # Returns the step initial property

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    def GetInitial(self):

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        return self.Initial

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   230

    # Returns the connector connected to input

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    def GetPreviousConnector(self):

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        if self.Input:

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            wires = self.Input.GetWires()

   234

            if len(wires) == 1:

   235

                return wires[0][0].EndConnected

   236

        return None

   237

   238

    # Returns the connector connected to output

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    def GetNextConnector(self):

   240

        if self.Output:

   241

            wires = self.Output.GetWires()

   242

            if len(wires) == 1:

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                return wires[0][0].StartConnected

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        return None

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   246

    # Returns the connector connected to action

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    def GetActionConnector(self):

   248

        if self.Action:

   249

            wires = self.Action.GetWires()

   250

            if len(wires) == 1:

   251

                return wires[0][0].StartConnected

   252

        return None

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   254

    # Returns the number of action line

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    def GetActionExtraLineNumber(self):

   256

        if self.Action:

   257

            wires = self.Action.GetWires()

   258

            if len(wires) != 1:

   259

                return 0

   260

            action_block = wires[0][0].StartConnected.GetParentBlock()

   261

            return max(0, action_block.GetLineNumber() - 1)

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        return 0

   263

   264

    # Returns the step minimum size

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    def GetMinSize(self):

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        dc = wx.ClientDC(self.Parent)

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        text_width, text_height = dc.GetTextExtent(self.Name)

   268

        if self.Initial:

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            return text_width + 14, text_height + 14

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        else:

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            return text_width + 10, text_height + 10

   272

   273

    # Updates the step size

   274

    def UpdateSize(self, width, height):

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        diffx = self.Size.GetWidth() / 2 - width / 2

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        diffy = height - self.Size.GetHeight()

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        self.Move(diffx, 0)

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        Graphic_Element.SetSize(self, width, height)

   279

        if self.Parent.GetDrawingMode() == FREEDRAWING_MODE:

   280

            self.RefreshConnected()

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        else:

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            self.RefreshOutputPosition((0, diffy))

   283

   284

    # Align input element with this step

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    def RefreshInputPosition(self):

   286

        if self.Input:

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            current_pos = self.Input.GetPosition(False)

   288

            input = self.GetPreviousConnector()

   289

            if input:

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                input_pos = input.GetPosition(False)

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                diffx = current_pos.x - input_pos.x

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                input_block = input.GetParentBlock()

   293

                if isinstance(input_block, SFC_Divergence):

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                    input_block.MoveConnector(input, diffx)

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                else:

   296

                    if isinstance(input_block, SFC_Step):

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                        input_block.MoveActionBlock((diffx, 0))

   298

                    input_block.Move(diffx, 0)

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                    input_block.RefreshInputPosition()

   300

   301

    # Align output element with this step

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    def RefreshOutputPosition(self, move = None):

   303

        if self.Output:

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            wires = self.Output.GetWires()

   305

            if len(wires) != 1:

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                return

   307

            current_pos = self.Output.GetPosition(False)

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            output = wires[0][0].StartConnected

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            output_pos = output.GetPosition(False)

   310

            diffx = current_pos.x - output_pos.x

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            output_block = output.GetParentBlock()

   312

            wire_size = SFC_WIRE_MIN_SIZE + self.GetActionExtraLineNumber() * SFC_ACTION_MIN_SIZE[1]

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            diffy = wire_size - output_pos.y + current_pos.y

   314

            if diffy != 0:

   315

                if isinstance(output_block, SFC_Step):

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                    output_block.MoveActionBlock((diffx, diffy))

   317

                wires[0][0].SetPoints([wx.Point(current_pos.x, current_pos.y + wire_size),

   318

                    wx.Point(current_pos.x, current_pos.y)])

   319

                if not isinstance(output_block, SFC_Divergence) or output_block.GetConnectors()["inputs"].index(output) == 0:

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                    output_block.Move(diffx, diffy, self.Parent.Wires)

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                    output_block.RefreshOutputPosition((diffx, diffy))

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                else:

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                    output_block.RefreshPosition()

   324

            elif move:

   325

                if isinstance(output_block, SFC_Step):

   326

                    output_block.MoveActionBlock(move)

   327

                wires[0][0].Move(move[0], move[1], True)

   328

                if not isinstance(output_block, SFC_Divergence) or output_block.GetConnectors()["inputs"].index(output) == 0:

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                    output_block.Move(move[0], move[1], self.Parent.Wires)

   330

                    output_block.RefreshOutputPosition(move)

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                else:

   332

                    output_block.RefreshPosition()

   333

            elif isinstance(output_block, SFC_Divergence):

   334

                output_block.MoveConnector(output, diffx)

   335

            else:

   336

                if isinstance(output_block, SFC_Step):

   337

                    output_block.MoveActionBlock((diffx, 0))

   338

                output_block.Move(diffx, 0)

   339

                output_block.RefreshOutputPosition()

   340

   341

    # Refresh action element with this step

   342

    def MoveActionBlock(self, move):

   343

        if self.Action:

   344

            wires = self.Action.GetWires()

   345

            if len(wires) != 1:

   346

                return

   347

            action_block = wires[0][0].StartConnected.GetParentBlock()

   348

            action_block.Move(move[0], move[1], self.Parent.Wires)

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            wires[0][0].Move(move[0], move[1], True)

   350

   351

    # Resize the divergence from position and size given

   352

    def Resize(self, x, y, width, height):

   353

        if self.Parent.GetDrawingMode() != FREEDRAWING_MODE:

   354

            self.UpdateSize(width, height)

   355

        else:

   356

            Graphic_Element.Resize(self, x, y, width, height)

   357

   358

    # Method called when a LeftDClick event have been generated

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    def OnLeftDClick(self, event, dc, scaling):

   360

        # Edit the step properties

   361

        self.Parent.EditStepContent(self)

   362

   363

    # Method called when a RightUp event have been generated

   364

    def OnRightUp(self, event, dc, scaling):

   365

        # Popup the menu with special items for a step

   366

        self.Parent.PopupDefaultMenu()

   367

   368

    # Refreshes the step state according to move defined and handle selected

   369

    def ProcessDragging(self, movex, movey):

   370

        handle_type, handle = self.Handle

   371

        if handle_type == HANDLE_MOVE:

   372

            action_block = None

   373

            if self.Parent.GetDrawingMode() == FREEDRAWING_MODE:

   374

                self.Move(movex, movey)

   375

                self.RefreshConnected()

   376

            elif self.Initial:

   377

                self.MoveActionBlock((movex, movey))

   378

                self.Move(movex, movey, self.Parent.Wires)

   379

                self.RefreshOutputPosition((movex, movey))

   380

            else:

   381

                self.MoveActionBlock((movex, 0))

   382

                self.Move(movex, 0)

   383

                self.RefreshInputPosition()

   384

                self.RefreshOutputPosition()

   385

            return True, False

   386

        else:

   387

            return Graphic_Element.ProcessDragging(self, movex, movey)

   388

   389

    # Refresh input element model

   390

    def RefreshInputModel(self):

   391

        if self.Input:

   392

            input = self.GetPreviousConnector()

   393

            if input:                

   394

                input_block = input.GetParentBlock()

   395

                input_block.RefreshModel(False)

   396

                if not isinstance(input_block, SFC_Divergence):

   397

                    input_block.RefreshInputModel()

   398

   399

    # Refresh output element model

   400

    def RefreshOutputModel(self, move=False):

   401

        if self.Output:

   402

            output = self.GetNextConnector()

   403

            if output:

   404

                output_block = output.GetParentBlock()

   405

                output_block.RefreshModel(False)

   406

                if not isinstance(output_block, SFC_Divergence) or move:

   407

                    output_block.RefreshOutputModel(move)

   408

   409

    # Refreshes the step model

   410

    def RefreshModel(self, move=True):

   411

        self.Parent.RefreshStepModel(self)

   412

        if self.Action:

   413

            action = self.GetActionConnector()

   414

            if action:

   415

                action_block = action.GetParentBlock()

   416

                action_block.RefreshModel(False)

   417

        # If step has moved, refresh the model of wires connected to output

   418

        if move:

   419

            if self.Parent.GetDrawingMode() != FREEDRAWING_MODE:

   420

                self.RefreshInputModel()

   421

                self.RefreshOutputModel(self.Initial)

   422

            elif self.Output:

   423

                self.Output.RefreshWires()

   424

   425

    # Draws step

   426

    def Draw(self, dc):

   427

        dc.SetPen(wx.BLACK_PEN)

   428

        dc.SetBrush(wx.WHITE_BRUSH)

   429

        # Draw two rectangles for representing the step

   430

        dc.DrawRectangle(self.Pos.x, self.Pos.y, self.Size[0] + 1, self.Size[1] + 1)

   431

        if self.Initial:

   432

            dc.DrawRectangle(self.Pos.x + 2, self.Pos.y + 2, self.Size[0] - 3, self.Size[1] - 3)

   433

        # Draw step name

   434

        namewidth, nameheight = dc.GetTextExtent(self.Name)

   435

        dc.DrawText(self.Name, self.Pos.x + (self.Size[0] - namewidth) / 2,

   436

                    self.Pos.y + (self.Size[1] - nameheight) / 2)

   437

        # Draw input and output connectors

   438

        if self.Input:

   439

            self.Input.Draw(dc)

   440

        if self.Output:

   441

            self.Output.Draw(dc)

   442

        if self.Action:

   443

            self.Action.Draw(dc)

   444

        Graphic_Element.Draw(self, dc)

   445

   446

#-------------------------------------------------------------------------------

   447

#                       Sequencial Function Chart Transition

   448

#-------------------------------------------------------------------------------

   449

   450

"""

   451

Class that implements the graphic representation of a transition

   452

"""

   453

   454

class SFC_Transition(Graphic_Element):

   455

   456

    # Create a new transition

   457

    def __init__(self, parent, type = "reference", condition = None, priority = 0, id = None):

   458

        Graphic_Element.__init__(self, parent)

   459

        self.Type = None

   460

        self.Id = id

   461

        self.Priority = 0

   462

        self.Size = wx.Size(SFC_TRANSITION_SIZE[0], SFC_TRANSITION_SIZE[1])

   463

        # Create an input and output connector

   464

        self.Input = Connector(self, "", None, wx.Point(self.Size[0] / 2, 0), NORTH)

   465

        self.Output = Connector(self, "", None, wx.Point(self.Size[0] / 2, self.Size[1]), SOUTH)

   466

        self.SetType(type, condition)

   467

        self.SetPriority(priority)

   468

   469

    # Destructor

   470

    def __del__(self):

   471

        self.Input = None

   472

        self.Output = None

   473

        if self.Type == "connection":

   474

            self.Condition = None

   475

   486

    # Forbids to change the transition size

   487

    def SetSize(self, width, height):

   488

        if self.Parent.GetDrawingMode() == FREEDRAWING_MODE:

   489

            Graphic_Element.SetSize(self, width, height)

   490

   491

    # Forbids to resize the transition

   492

    def Resize(self, x, y, width, height):

   493

        if self.Parent.GetDrawingMode() == FREEDRAWING_MODE:

   494

            Graphic_Element.Resize(self, x, y, width, height)

   495

   496

    # Refresh the size of text for name

   497

    def RefreshConditionSize(self):

   498

        if self.Type != "connection":

   499

            dc = wx.ClientDC(self.Parent)

   500

            if self.Condition != "":

   501

                self.ConditionSize = dc.GetTextExtent(self.Condition)

   502

            else:

   503

                self.ConditionSize = dc.GetTextExtent("Transition")

   504

   505

    # Refresh the size of text for name

   506

    def RefreshPrioritySize(self):

   507

        if self.Priority != "":

   508

            dc = wx.ClientDC(self.Parent)

   509

            self.PrioritySize = dc.GetTextExtent(str(self.Priority))

   510

        else:

   511

            self.PrioritySize = None

   512

   513

    # Delete this transition by calling the appropriate method

   514

    def Delete(self):

   515

        self.Parent.DeleteTransition(self)

   516