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#!/usr/bin/env python

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

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     4

#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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#

    21

#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

    24

    25

import wx

    26

    27

from GraphicCommons import *

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from plcopen.structures import *

    29

    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:

    34

        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

    51

        self.Id = id

    52

        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

    67

    # Make a clone of this SFC_Step

    68

    def Clone(self, parent, id = None, name = "Step", pos = None):

    69

        step = SFC_Step(parent, name, self.Initial, id)

    70

        step.SetSize(self.Size[0], self.Size[1])

    71

        if pos is not None:

    72

            step.SetPosition(pos.x, pos.y)

    73

        if self.Input:

    74

            step.Input = self.Input.Clone(step)

    75

        if self.Output:

    76

            step.Output = self.Output.Clone(step)

    77

        if self.Action:

    78

            step.Action = self.Action.Clone(step)

    79

        return step

    80

    81

    # Returns the RedrawRect

    82

    def GetRedrawRect(self, movex = 0, movey = 0):

    83

        rect = Graphic_Element.GetRedrawRect(self, movex, movey)

    84

        if self.Input:

    85

            rect = rect.Union(self.Input.GetRedrawRect(movex, movey))

    86

        if self.Output:

    87

            rect = rect.Union(self.Output.GetRedrawRect(movex, movey))

    88

        if self.Action:

    89

            rect = rect.Union(self.Action.GetRedrawRect(movex, movey))

    90

        if movex != 0 or movey != 0:

    91

            if self.Input and self.Input.IsConnected():

    92

                rect = rect.Union(self.Input.GetConnectedRedrawRect(movex, movey))

    93

            if self.Output and self.Output.IsConnected():

    94

                rect = rect.Union(self.Output.GetConnectedRedrawRect(movex, movey))

    95

            if self.Action and self.Action.IsConnected():

    96

                rect = rect.Union(self.Action.GetConnectedRedrawRect(movex, movey))

    97

        return rect

    98

    99

    # Delete this step by calling the appropriate method

   100

    def Delete(self):

   101

        self.Parent.DeleteStep(self)

   102

   103

    # Unconnect input and output

   104

    def Clean(self):

   105

        if self.Input:

   106

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

   107

        if self.Output:

   108

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

   109

        if self.Action:

   110

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

   111

   112

    # Add output connector to step

   113

    def AddInput(self):

   114

        if not self.Input:

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

   116

            self.RefreshBoundingBox()

   117

   118

    # Remove output connector from step

   119

    def RemoveInput(self):

   120

        if self.Input:

   121

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

   122

            self.Input = None

   123

            self.RefreshBoundingBox()

   124

   125

    # Add output connector to step

   126

    def AddOutput(self):

   127

        if not self.Output:

   128

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

   129

            self.RefreshBoundingBox()

   130

   131

    # Remove output connector from step

   132

    def RemoveOutput(self):

   133

        if self.Output:

   134

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

   135

            self.Output = None

   136

            self.RefreshBoundingBox()

   137

   138

    # Add action connector to step

   139

    def AddAction(self):

   140

        if not self.Action:

   141

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

   142

            self.RefreshBoundingBox()

   143

   144

    # Remove action connector from step

   145

    def RemoveAction(self):

   146

        if self.Action:

   147

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

   148

            self.Action = None

   149

            self.RefreshBoundingBox()

   150

   151

    # Refresh the step bounding box

   152

    def RefreshBoundingBox(self):

   153

        # Calculate the bounding box size

   154

        if self.Action:

   155

            bbx_width = self.Size[0] + CONNECTOR_SIZE

   156

        else:

   157

            bbx_width = self.Size[0]

   158

        if self.Initial:

   159

            bbx_y = self.Pos.y

   160

            bbx_height = self.Size[1]

   161

            if self.Output:

   162

                bbx_height += CONNECTOR_SIZE

   163

        else:

   164

            bbx_y = self.Pos.y - CONNECTOR_SIZE

   165

            bbx_height = self.Size[1] + CONNECTOR_SIZE

   166

            if self.Output:

   167

                bbx_height += CONNECTOR_SIZE

   168

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

   169

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

   170

   171

    # Refresh the positions of the step connectors

   172

    def RefreshConnectors(self):

   173

        scaling = self.Parent.GetScaling()

   174

        horizontal_pos = self.Size[0] / 2

   175

        vertical_pos = self.Size[1] / 2

   176

        if scaling is not None:

   177

            horizontal_pos = round(float(self.Pos.x + horizontal_pos) / float(scaling[0])) * scaling[0] - self.Pos.x

   178

            vertical_pos = round(float(self.Pos.y + vertical_pos) / float(scaling[1])) * scaling[1] - self.Pos.y

   179

        # Update input position if it exists

   180

        if self.Input:

   181

            self.Input.SetPosition(wx.Point(horizontal_pos, 0))

   182

        # Update output position

   183

        if self.Output:

   184

            self.Output.SetPosition(wx.Point(horizontal_pos, self.Size[1]))

   185

        # Update action position if it exists

   186

        if self.Action:

   187

            self.Action.SetPosition(wx.Point(self.Size[0], vertical_pos))

   188

        self.RefreshConnected()

   189

   190

    # Refresh the position of wires connected to step

   191

    def RefreshConnected(self, exclude = []):

   192

        if self.Input:

   193

            self.Input.MoveConnected(exclude)

   194

        if self.Output:

   195

            self.Output.MoveConnected(exclude)

   196

        if self.Action:

   197

            self.Action.MoveConnected(exclude)

   198

   199

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

   200

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

   201

        # if a name is given

   202

        if name:

   203

            # Test input, output and action connector if they exists

   204

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

   205

                return self.Input

   206

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

   207

                return self.Output

   208

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

   209

                return self.Action

   210

        # Test input connector if it exists

   211

        if self.Input:

   212

            input_pos = self.Input.GetRelPosition()

   213

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

   214

                return self.Input

   215

        # Test output connector if it exists

   216

        if self.Output:

   217

            output_pos = self.Output.GetRelPosition()

   218

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

   219

                return self.Output

   220

        # Test action connector if it exists

   221

        if self.Action:

   222

            action_pos = self.Action.GetRelPosition()

   223

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

   224

                return self.Action

   225

        return None

   226

   227

    # Returns input and output step connectors 

   228

    def GetConnectors(self):

   229

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

   230

   231

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

   232

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

   233

        # Test input connector if it exists

   234

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

   235

            return self.Input

   236

        # Test output connector

   237

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

   238

            return self.Output

   239

        # Test action connector

   240

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

   241

            return self.Action

   242

        return None

   243

   244

    # Changes the step name

   245

    def SetName(self, name):

   246

        self.Name = name

   247

   248

    # Returns the step name

   249

    def GetName(self):

   250

        return self.Name

   251

   252

    # Returns the step initial property

   253

    def GetInitial(self):

   254

        return self.Initial

   255

   256

    # Returns the connector connected to input

   257

    def GetPreviousConnector(self):

   258

        if self.Input:

   259

            wires = self.Input.GetWires()

   260

            if len(wires) == 1:

   261

                return wires[0][0].GetOtherConnected(self.Input)

   262

        return None

   263

   264

    # Returns the connector connected to output

   265

    def GetNextConnector(self):

   266

        if self.Output:

   267

            wires = self.Output.GetWires()

   268

            if len(wires) == 1:

   269

                return wires[0][0].GetOtherConnected(self.Output)

   270

        return None

   271

   272

    # Returns the connector connected to action

   273

    def GetActionConnector(self):

   274

        if self.Action:

   275

            wires = self.Action.GetWires()

   276

            if len(wires) == 1:

   277

                return wires[0][0].GetOtherConnected(self.Action)

   278

        return None

   279

   280

    # Returns the number of action line

   281

    def GetActionExtraLineNumber(self):

   282

        if self.Action:

   283

            wires = self.Action.GetWires()

   284

            if len(wires) != 1:

   285

                return 0

   286

            action_block = wires[0][0].GetOtherConnected(self.Action).GetParentBlock()

   287

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

   288

        return 0

   289

   290

    # Returns the step minimum size

   291

    def GetMinSize(self):

   292

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

   293

        if self.Initial:

   294

            return text_width + 14, text_height + 14

   295

        else:

   296

            return text_width + 10, text_height + 10

   297

   298

    # Updates the step size

   299

    def UpdateSize(self, width, height):

   300

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

   301

        diffy = height - self.Size.GetHeight()

   302

        self.Move(diffx, 0)

   303

        Graphic_Element.SetSize(self, width, height)

   304

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

   305

            self.RefreshConnected()

   306

        else:

   307

            self.RefreshOutputPosition((0, diffy))

   308

   309

    # Align input element with this step

   310

    def RefreshInputPosition(self):

   311

        if self.Input:

   312

            current_pos = self.Input.GetPosition(False)

   313

            input = self.GetPreviousConnector()

   314

            if input:

   315

                input_pos = input.GetPosition(False)

   316

                diffx = current_pos.x - input_pos.x

   317

                input_block = input.GetParentBlock()

   318

                if isinstance(input_block, SFC_Divergence):

   319

                    input_block.MoveConnector(input, diffx)

   320

                else:

   321

                    if isinstance(input_block, SFC_Step):

   322

                        input_block.MoveActionBlock((diffx, 0))

   323

                    input_block.Move(diffx, 0)

   324

                    input_block.RefreshInputPosition()

   325

   326

    # Align output element with this step

   327

    def RefreshOutputPosition(self, move = None):

   328

        if self.Output:

   329

            wires = self.Output.GetWires()

   330

            if len(wires) != 1:

   331

                return

   332

            current_pos = self.Output.GetPosition(False)

   333

            output = wires[0][0].GetOtherConnected(self.Output)

   334

            output_pos = output.GetPosition(False)

   335

            diffx = current_pos.x - output_pos.x

   336

            output_block = output.GetParentBlock()

   337

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

   338

            diffy = wire_size - output_pos.y + current_pos.y

   339

            if diffy != 0:

   340

                if isinstance(output_block, SFC_Step):

   341

                    output_block.MoveActionBlock((diffx, diffy))

   342

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

   343

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

   344

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

   345

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

   346

                    output_block.RefreshOutputPosition((diffx, diffy))

   347

                else:

   348

                    output_block.RefreshPosition()

   349

            elif move:

   350

                if isinstance(output_block, SFC_Step):

   351

                    output_block.MoveActionBlock(move)

   352

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

   353

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

   354

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

   355

                    output_block.RefreshOutputPosition(move)

   356

                else:

   357

                    output_block.RefreshPosition()

   358

            elif isinstance(output_block, SFC_Divergence):

   359

                output_block.MoveConnector(output, diffx)

   360

            else:

   361

                if isinstance(output_block, SFC_Step):

   362

                    output_block.MoveActionBlock((diffx, 0))

   363

                output_block.Move(diffx, 0)

   364

                output_block.RefreshOutputPosition()

   365

   366

    # Refresh action element with this step

   367

    def MoveActionBlock(self, move):

   368

        if self.Action:

   369

            wires = self.Action.GetWires()

   370

            if len(wires) != 1:

   371

                return

   372

            action_block = wires[0][0].GetOtherConnected(self.Action).GetParentBlock()

   373

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

   374

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

   375

   376

    # Resize the divergence from position and size given

   377

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

   378

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

   379

            self.UpdateSize(width, height)

   380

        else:

   381

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

   382

   383

    # Method called when a LeftDClick event have been generated

   384

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

   385

        # Edit the step properties

   386

        self.Parent.EditStepContent(self)

   387

   388

    # Method called when a RightUp event have been generated

   389

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

   390

        # Popup the menu with special items for a step

   391

        self.Parent.PopupDefaultMenu()

   392

   393

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

   394

    def ProcessDragging(self, movex, movey, centered, scaling):

   395

        handle_type, handle = self.Handle

   396

        if handle_type == HANDLE_MOVE:

   397

            movex = max(-self.BoundingBox.x, movex)

   398

            movey = max(-self.BoundingBox.y, movey)

   399

            if scaling is not None:

   400

                movex = round(float(self.Pos.x + movex) / float(scaling[0])) * scaling[0] - self.Pos.x

   401

                movey = round(float(self.Pos.y + movey) / float(scaling[1])) * scaling[1] - self.Pos.y

   402

            action_block = None

   403

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

   404

                self.Move(movex, movey)

   405

                self.RefreshConnected()

   406

                return movex, movey

   407

            elif self.Initial:

   408

                self.MoveActionBlock((movex, movey))

   409

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

   410

                self.RefreshOutputPosition((movex, movey))

   411

                return movex, movey

   412

            else:

   413

                self.MoveActionBlock((movex, 0))

   414

                self.Move(movex, 0)

   415

                self.RefreshInputPosition()

   416

                self.RefreshOutputPosition()

   417

                return movex, 0

   418

        else:

   419

            return Graphic_Element.ProcessDragging(self, movex, movey, centered, scaling)

   420

   421

    # Refresh input element model

   422

    def RefreshInputModel(self):

   423

        if self.Input:

   424

            input = self.GetPreviousConnector()

   425

            if input:                

   426

                input_block = input.GetParentBlock()

   427

                input_block.RefreshModel(False)

   428

                if not isinstance(input_block, SFC_Divergence):

   429

                    input_block.RefreshInputModel()

   430

   431

    # Refresh output element model

   432

    def RefreshOutputModel(self, move=False):

   433

        if self.Output:

   434

            output = self.GetNextConnector()

   435

            if output:

   436

                output_block = output.GetParentBlock()

   437

                output_block.RefreshModel(False)

   438

                if not isinstance(output_block, SFC_Divergence) or move:

   439

                    output_block.RefreshOutputModel(move)

   440

   441

    # Refreshes the step model

   442

    def RefreshModel(self, move=True):

   443

        self.Parent.RefreshStepModel(self)

   444

        if self.Action:

   445

            action = self.GetActionConnector()

   446

            if action:

   447

                action_block = action.GetParentBlock()

   448

                action_block.RefreshModel(False)

   449

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

   450

        if move:

   451

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

   452

                self.RefreshInputModel()

   453

                self.RefreshOutputModel(self.Initial)

   454

            elif self.Output:

   455

                self.Output.RefreshWires()

   456

   457

    # Draws step

   458

    def Draw(self, dc):

   459

        Graphic_Element.Draw(self, dc)

   460

        dc.SetPen(wx.BLACK_PEN)

   461

        dc.SetBrush(wx.WHITE_BRUSH)

   462

        # Draw two rectangles for representing the step

   463

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

   464

        if self.Initial:

   465

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

   466

        # Draw step name

   467

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

   468

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

   469

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

   470

        # Draw input and output connectors

   471

        if self.Input:

   472

            self.Input.Draw(dc)

   473

        if self.Output:

   474

            self.Output.Draw(dc)

   475

        if self.Action:

   476

            self.Action.Draw(dc)

   477

   478

   479

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

   480

#                       Sequencial Function Chart Transition

   481

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

   482

   483

"""

   484

Class that implements the graphic representation of a transition

   485

"""

   486

   487

class SFC_Transition(Graphic_Element):

   488

   489

    # Create a new transition

   490

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

   491

        Graphic_Element.__init__(self, parent)

   492

        self.Type = None

   493

        self.Id = id

   494

        self.Priority = 0

   495

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

   496

        # Create an input and output connector

   497

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

   498

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

   499

        self.SetType(type, condition)

   500

        self.SetPriority(priority)

   501

   502

    # Destructor

   503

    def __del__(self):

   504

        self.Input = None

   505

        self.Output = None

   506

        if self.Type == "connection":

   507

            self.Condition = None

   508

   509

    # Make a clone of this SFC_Transition

   510

    def Clone(self, parent, id = None, pos = None):

   511

        transition = SFC_Transition(parent, self.Type, self.Condition, self.Priority, id)

   512

        transition.SetSize(self.Size[0], self.Size[1])