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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

    26

    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):

    32

        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

    35

    36

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

    37

#                         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

    50

        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:

    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

    67

    # Delete this step by calling the appropriate method

    68

    def Delete(self):

    69

        self.Parent.DeleteStep(self)

    70

    71

    # Unconnect input and output

    72

    def Clean(self):

    73

        if self.Input:

    74

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

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        if self.Output:

    76

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

    77

        if self.Action:

    78

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

    79

    80

    # Add output connector to step

    81

    def AddInput(self):

    82

        if not self.Input:

    84

            self.RefreshBoundingBox()

    85

    86

    # Remove output connector from step

    87

    def RemoveInput(self):

    88

        if self.Input:

    89

            self.Input.UnConnect()

    90

            self.Input = None

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            self.RefreshBoundingBox()

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    93

    # Add output connector to step

    94

    def AddOutput(self):

    95

        if not self.Output:

    97

            self.RefreshBoundingBox()

    98

    99

    # Remove output connector from step

   100

    def RemoveOutput(self):

   101

        if self.Output:

   102

            self.Output.UnConnect()

   103

            self.Output = None

   104

            self.RefreshBoundingBox()

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   106

    # Add action connector to step

   107

    def AddAction(self):

   108

        if not self.Action:

   110

            self.RefreshBoundingBox()

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   112

    # Remove action connector from step

   113

    def RemoveAction(self):

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        if self.Action:

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            self.Action.UnConnect()

   116

            self.Action = None

   117

            self.RefreshBoundingBox()

   118

   119

    # Refresh the step bounding box

   120

    def RefreshBoundingBox(self):

   121

        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:

   126

            bbx_width = self.Size[0]

   127

        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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   140

    # 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]))

   148

        # 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))

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        self.RefreshConnected()

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   153

    # Refresh the position of wires connected to step

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    def RefreshConnected(self, exclude = []):

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        if self.Input:

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            self.Input.MoveConnected(exclude)

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        if self.Output:

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            self.Output.MoveConnected(exclude)

   159

        if self.Action:

   160

            self.Action.MoveConnected(exclude)

   161

   162

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

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

   164

        # if a name is given

   165

        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

   169

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

   170

                return self.Output

   171

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

   172

                return self.Action

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        # Test input connector if it exists

   174

        if self.Input:

   175

            input_pos = self.Input.GetRelPosition()

   176

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

   177

                return self.Input

   178

        # Test output connector if it exists

   179

        if self.Output:

   180

            output_pos = self.Output.GetRelPosition()

   181

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

   182

                return self.Output

   183

        # Test action connector if it exists

   184

        if self.Action:

   185

            action_pos = self.Action.GetRelPosition()

   186

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

   187

                return self.Action

   188

        return None

   189

   190

    # Returns input and output step connectors 

   191

    def GetConnectors(self):

   192

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

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   194

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

   195

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

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        # Test input connector if it exists

   197

        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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        return None

   206

   207

    # Changes the step name

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    def SetName(self, name):

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        self.Name = name

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   211

    # Returns the step name

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    def GetName(self):

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        return self.Name

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   215

    # Returns the step initial property

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    def GetInitial(self):

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        return self.Initial

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   219

    # Returns the connector connected to input

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    def GetPreviousConnector(self):

   221

        if self.Input:

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            wires = self.Input.GetWires()

   223

            if len(wires) == 1:

   224

                return wires[0][0].EndConnected

   225

        return None

   226

   227

    # Returns the connector connected to output

   228

    def GetNextConnector(self):

   229

        if self.Output:

   230

            wires = self.Output.GetWires()

   231

            if len(wires) == 1:

   232

                return wires[0][0].StartConnected

   233

        return None

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   235

    # Returns the connector connected to action

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    def GetActionConnector(self):

   237

        if self.Action:

   238

            wires = self.Action.GetWires()

   239

            if len(wires) == 1:

   240

                return wires[0][0].StartConnected

   241

        return None

   242

   243

    # Returns the number of action line

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    def GetActionExtraLineNumber(self):

   245

        if self.Action:

   246

            wires = self.Action.GetWires()

   247

            if len(wires) != 1:

   248

                return 0

   249

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

   250

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

   251

        return 0

   252

   253

    # Returns the step minimum size

   254

    def GetMinSize(self):

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        dc = wx.ClientDC(self.Parent)

   256

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

   257

        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

   261

   262

    # Updates the step size

   263

    def UpdateSize(self, width, height):

   264

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

   265

        diffy = height - self.Size.GetHeight()

   266

        self.Move(diffx, 0)

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        Graphic_Element.SetSize(self, width, height)

   272

   273

    # Align input element with this step

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    def RefreshInputPosition(self):

   275

        if self.Input:

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            current_pos = self.Input.GetPosition(False)

   277

            input = self.GetPreviousConnector()

   278

            if input:

   279

                input_pos = input.GetPosition(False)

   280

                diffx = current_pos.x - input_pos.x

   281

                input_block = input.GetParentBlock()

   282

                if isinstance(input_block, SFC_Divergence):

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                    input_block.MoveConnector(input, diffx)

   284

                else:

   285

                    if isinstance(input_block, SFC_Step):

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                        input_block.MoveActionBlock((diffx, 0))

   287

                    input_block.Move(diffx, 0)

   288

                    input_block.RefreshInputPosition()

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   290

    # Align output element with this step

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    def RefreshOutputPosition(self, move = None):

   292

        if self.Output:

   293

            wires = self.Output.GetWires()

   294

            if len(wires) != 1:

   295

                return

   296

            current_pos = self.Output.GetPosition(False)

   297

            output = wires[0][0].StartConnected

   298

            output_pos = output.GetPosition(False)

   299

            diffx = current_pos.x - output_pos.x

   300

            output_block = output.GetParentBlock()

   301

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

   302

            diffy = wire_size - output_pos.y + current_pos.y

   303

            if diffy != 0:

   304

                if isinstance(output_block, SFC_Step):

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                    output_block.MoveActionBlock((diffx, diffy))

   306

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

   307

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

   308

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

   309

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

   310

                    output_block.RefreshOutputPosition((diffx, diffy))

   311

                else:

   312

                    output_block.RefreshPosition()

   313

            elif move:

   314

                if isinstance(output_block, SFC_Step):

   315

                    output_block.MoveActionBlock(move)

   316

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

   317

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

   318

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

   319

                    output_block.RefreshOutputPosition(move)

   320

                else:

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                    output_block.RefreshPosition()

   322

            elif isinstance(output_block, SFC_Divergence):

   323

                output_block.MoveConnector(output, diffx)

   324

            else:

   325

                if isinstance(output_block, SFC_Step):

   326

                    output_block.MoveActionBlock((diffx, 0))

   327

                output_block.Move(diffx, 0)

   328

                output_block.RefreshOutputPosition()

   329

   330

    # Refresh action element with this step

   331

    def MoveActionBlock(self, move):

   332

        if self.Action:

   333

            wires = self.Action.GetWires()

   334

            if len(wires) != 1:

   335

                return

   336

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

   337

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

   338

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

   339

   340

    # Resize the divergence from position and size given

   341

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

   342

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

   343

            self.UpdateSize(width, height)

   344

        else:

   345

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

   346

   347

    # Method called when a LeftDClick event have been generated

   348

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

   349

        # Edit the step properties

   350

        self.Parent.EditStepContent(self)

   351

   352

    # Method called when a RightUp event have been generated

   353

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

   354

        # Popup the menu with special items for a step

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        self.Parent.PopupDefaultMenu()

   356

   357

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

   358

    def ProcessDragging(self, movex, movey):

   359

        handle_type, handle = self.Handle

   360

        if handle_type == HANDLE_MOVE:

   361

            action_block = None

   362

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

   363

                self.Move(movex, movey)

   364

                self.RefreshConnected()

   365

            elif self.Initial:

   366

                self.MoveActionBlock((movex, movey))

   367

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

   368

                self.RefreshOutputPosition((movex, movey))

   369

            else:

   370

                self.MoveActionBlock((movex, 0))

   371

                self.Move(movex, 0)

   372

                self.RefreshInputPosition()

   373

                self.RefreshOutputPosition()

   374

        else:

   375

            Graphic_Element.ProcessDragging(self, movex, movey)

   376

   377

    # Refresh input element model

   378

    def RefreshInputModel(self):

   379

        if self.Input:

   380

            input = self.GetPreviousConnector()

   381

            if input:                

   382

                input_block = input.GetParentBlock()

   383

                input_block.RefreshModel(False)

   384

                if not isinstance(input_block, SFC_Divergence):

   385

                    input_block.RefreshInputModel()

   386

   387

    # Refresh output element model

   388

    def RefreshOutputModel(self, move=False):

   389

        if self.Output:

   390

            output = self.GetNextConnector()

   391

            if output:

   392

                output_block = output.GetParentBlock()

   393

                output_block.RefreshModel(False)

   394

                if not isinstance(output_block, SFC_Divergence) or move:

   395

                    output_block.RefreshOutputModel(move)

   396

   397

    # Refreshes the step model

   398

    def RefreshModel(self, move=True):

   399

        self.Parent.RefreshStepModel(self)

   400

        if self.Action:

   401

            action = self.GetActionConnector()

   402

            if action:

   403

                action_block = action.GetParentBlock()

   404

                action_block.RefreshModel(False)

   405

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

   406

        if move:

   407

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

   408

                self.RefreshInputModel()

   409

                self.RefreshOutputModel(self.Initial)

   410

            elif self.Output:

   411

                self.Output.RefreshWires()

   412

   413

    # Draws step

   414

    def Draw(self, dc):

   415

        dc.SetPen(wx.BLACK_PEN)

   416

        dc.SetBrush(wx.WHITE_BRUSH)

   417

        # Draw two rectangles for representing the step

   418

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

   419

        if self.Initial:

   420

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

   421

        # Draw step name

   422

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

   423

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

   424

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

   425

        # Draw input and output connectors

   426

        if self.Input:

   427

            self.Input.Draw(dc)

   428

        if self.Output:

   429

            self.Output.Draw(dc)

   430

        if self.Action:

   431

            self.Action.Draw(dc)

   432

        Graphic_Element.Draw(self, dc)

   433

   434

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

   435

#                       Sequencial Function Chart Transition

   436

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

   437

   438

"""

   439

Class that implements the graphic representation of a transition

   440

"""

   441

   442

class SFC_Transition(Graphic_Element):

   443

   444

    # Create a new transition

   445

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

   446

        Graphic_Element.__init__(self, parent)

   447

        self.Type = None

   448

        self.Id = id

   449

        self.Priority = 0

   450

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

   451

        # Create an input and output connector

   454

        self.SetType(type, condition)

   455

        self.SetPriority(priority)

   456

   457

    # Destructor

   458

    def __del__(self):

   459

        self.Input = None

   460

        self.Output = None

   461

        if self.Type == "connection":

   462

            self.Condition = None

   463

   464

    # Forbids to change the transition size

   465

    def SetSize(self, width, height):

   466

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

   467

            Graphic_Element.SetSize(self, width, height)

   468

   469

    # Forbids to resize the transition

   470

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

   471

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

   472

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

   473

   474

    # Refresh the size of text for name

   475

    def RefreshConditionSize(self):

   476

        if self.Type != "connection":

   477

            dc = wx.ClientDC(self.Parent)

   478

            if self.Condition != "":

   479

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

   480

            else:

   481

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

   482

   483

    # Refresh the size of text for name

   484

    def RefreshPrioritySize(self):

   485

        if self.Priority != "":

   486

            dc = wx.ClientDC(self.Parent)

   487

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

   488

        else:

   489

            self.PrioritySize = None

   490

   491

    # Delete this transition by calling the appropriate method

   492

    def Delete(self):

   493

        self.Parent.DeleteTransition(self)

   494

   495

    # Unconnect input and output

   496

    def Clean(self):

   497

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

   498

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

   499

        if self.Type == "connection":

   500

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

   501

   502

    # Refresh the transition bounding box

   503

    def RefreshBoundingBox(self):

   504

        dc = wx.ClientDC(self.Parent)

   505

        bbx_x, bbx_y, bbx_width, bbx_height = self.Pos.x, self.Pos.y, self.Size[0], self.Size[1]

   506

        if self.Priority != 0:

   507

            bbx_y = self.Pos.y - self.PrioritySize[1] - 2

   508

            bbx_width = max(self.Size[0], self.PrioritySize[0])

   509

            bbx_height = self.Size[1] + self.PrioritySize[1] + 2

   510

        if self.Type == "connection":

   511

            bbx_x = self.Pos.x - CONNECTOR_SIZE

   512

            bbx_width = bbx_width + CONNECTOR_SIZE

   513

        else:

   514

            text_width, text_height = self.ConditionSize

   515

            # Calculate the bounding box size

   516

            bbx_width = max(bbx_width, self.Size[0] + 5 + text_width)