1

#!/usr/bin/env python

     2

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

     3

     4

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

     5

#based on the plcopen standard. 

     6

#

     7

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

     8

#

     9

#See COPYING file for copyrights details.

    10

#

    11

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

    12

#modify it under the terms of the GNU General Public

    13

#License as published by the Free Software Foundation; either

    14

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

    15

#

    16

#This library is distributed in the hope that it will be useful,

    17

#but WITHOUT ANY WARRANTY; without even the implied warranty of

    18

#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    19

#General Public License for more details.

    20

#

    21

#You should have received a copy of the GNU General Public

    22

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

    23

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

    24

    25

import wx

    26

    27

from GraphicCommons import *

    28

from plcopen.structures import *

    29

    30

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

    31

#                         Ladder Diagram PowerRail

    32

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

    33

    34

"""

    35

Class that implements the graphic representation of a power rail

    36

"""

    37

    38

class LD_PowerRail(Graphic_Element):

    39

    40

    # Create a new power rail

    41

    def __init__(self, parent, type, id = None, connectors = [True]):

    42

        Graphic_Element.__init__(self, parent)

    43

        self.Type = None

    44

        self.Connectors = []

    45

        self.RealConnectors = None

    46

        self.Id = id

    47

        self.Extensions = [LD_LINE_SIZE / 2, LD_LINE_SIZE / 2]

    48

        if len(connectors) < 1:

    49

            connectors = [True]

    50

        self.SetType(type, connectors)

    51

    52

    # Destructor

    53

    def __del__(self):

    54

        self.Connectors = []

    55

    56

    # Forbids to change the power rail size

    57

    def SetSize(self, width, height):

    58

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

    59

            Graphic_Element.SetSize(self, width, height)

    60

            self.RefreshConnectors()

    61

    62

    # Forbids to select a power rail

    63

    def HitTest(self, pt):

    64

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

    65

            return Graphic_Element.HitTest(self, pt) or self.TestConnector(pt, False) != None

    66

        return False

    67

    68

    # Forbids to select a power rail

    69

    def IsInSelection(self, rect):

    70

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

    71

            return Graphic_Element.IsInSelection(self, rect)

    72

        return False

    73

    74

    # Deletes this power rail by calling the appropriate method

    75

    def Delete(self):

    76

        self.Parent.DeletePowerRail(self)

    77

    78

    # Unconnect all connectors

    79

    def Clean(self):

    80

        for connector in self.Connectors:

    81

            if connector:

    82

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

    83

    84

    # Refresh the power rail bounding box

    85

    def RefreshBoundingBox(self):

    86

        dc = wx.ClientDC(self.Parent)

    87

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

    88

    89

    # Refresh the power rail size

    90

    def RefreshSize(self):

    91

        self.Size = wx.Size(2, LD_LINE_SIZE * len(self.Connectors))

    92

        self.RefreshBoundingBox()

    93

    94

    # Returns the block minimum size

    95

    def GetMinSize(self):

   100

   101

    # Add a connector or a blank to this power rail at the last place

   102

    def AddConnector(self, connector = True):

   103

        self.InsertConnector(len(self.Connectors), connector)

   104

   105

    # Add a connector or a blank to this power rail at the place given

   106

    def InsertConnector(self, idx, connector = True):

   107

        if connector:

   108

            if self.Type == LEFTRAIL:

   109

                connector = Connector(self, "", "BOOL", wx.Point(self.Size[0], 0), EAST)

   110

            elif self.Type == RIGHTRAIL:

   111

                connector = Connector(self, "", "BOOL", wx.Point(0, 0), WEST)

   112

            self.Connectors.insert(idx, connector)

   113

        else:

   114

            self.Connectors.insert(idx, None)

   115

        self.RefreshSize()

   116

        self.RefreshConnectors()

   117

   118

    # Moves the divergence connector given

   119

    def MoveConnector(self, connector, movey):

   120

        position = connector.GetRelPosition()

   121

        connector.SetPosition(wx.Point(position.x, position.y + movey))

   122

        miny = self.Size[1]

   123

        maxy = 0

   124

        for connect in self.Connectors:

   125

            connect_pos = connect.GetRelPosition()

   126

            miny = min(miny, connect_pos.y - self.Extensions[0])

   127

            maxy = max(maxy, connect_pos.y - self.Extensions[0])

   128

        min_pos = self.Pos.y + miny

   129

        self.Pos.y = min(min_pos, self.Pos.y)

   130

        if min_pos == self.Pos.y:

   131

            for connect in self.Connectors:

   132

                connect_pos = connect.GetRelPosition()

   133

                connect.SetPosition(wx.Point(connect_pos.x, connect_pos.y - miny))

   134

        maxy = 0

   135

        for connect in self.Connectors:

   136

            connect_pos = connect.GetRelPosition()

   137

            maxy = max(maxy, connect_pos.y)

   138

        self.Size[1] = max(maxy + self.Extensions[1], self.Size[1])

   139

        connector.MoveConnected()

   140

        self.RefreshBoundingBox()

   141

   142

    # Returns the index in connectors list for the connector given

   143

    def GetConnectorIndex(self, connector):

   144

        if connector in self.Connectors:

   145

            return self.Connectors.index(connector)

   146

        return None

   147

   148

    # Returns if there is a connector in connectors list at the index given

   149

    def IsNullConnector(self, idx):

   150

        if idx < len(self.Connectors):

   151

            return self.Connectors[idx] == None

   152

        return False

   153

   154

    # Delete the connector or blank from connectors list at the index given

   155

    def DeleteConnector(self, idx):

   156

        self.Connectors.pop(idx)

   157

        self.RefreshConnectors()

   158

        self.RefreshSize()

   159

   160

    # Refresh the positions of the power rail connectors

   161

    def RefreshConnectors(self):

   162

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

   163

            height = self.Size[1] - self.Extensions[0] - self.Extensions[1]

   164

            interval = float(height) / float(max(len(self.Connectors) - 1, 1))

   165

            for i, connector in enumerate(self.Connectors):

   166

                position = connector.GetRelPosition()

   167

                if self.Type == LEFTRAIL:

   168

                    if self.RealConnectors:

   169

                        connector.SetPosition(wx.Point(self.Size[0], self.Extensions[0] + int(round(self.RealConnectors[i] * height))))

   170

                    else:

   172

                elif self.Type == RIGHTRAIL:

   173

                    if self.RealConnectors:

   174

                        connector.SetPosition(wx.Point(0, self.Extensions[0] + int(round(self.RealConnectors[i] * height))))

   175

                    else:

   177

        else:

   178

            position = self.Extensions[0]

   179

            for connector in self.Connectors:

   180

                if connector:

   181

                    if self.Type == LEFTRAIL:

   182

                        connector.SetPosition(wx.Point(self.Size[0], position))

   183

                    elif self.Type == RIGHTRAIL:

   184

                        connector.SetPosition(wx.Point(0, position))

   185

                position += LD_LINE_SIZE

   186

        self.RefreshConnected()

   187

   188

    # Refresh the position of wires connected to power rail

   189

    def RefreshConnected(self, exclude = []):

   190

        for connector in self.Connectors:

   191

            if connector:

   192

                connector.MoveConnected(exclude)

   193

   194

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

   195

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

   196

        # if a name is given

   197

        if name:

   198

            # Test each connector if it exists

   199

            for connector in self.Connectors:

   200

                if connector and name == connector.GetName():

   201

                    return connector

   202

        for connector in self.Connectors:

   203

            if connector:

   204

                connector_pos = connector.GetRelPosition()

   205

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

   206

                    return connector

   207

        return None

   208

   209

    # Returns all the power rail connectors 

   210

    def GetConnectors(self):

   211

        return [connector for connector in self.Connectors if connector]

   212

   213

    # Test if point given is on one of the power rail connectors

   214

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

   215

        for connector in self.Connectors:

   216

            if connector and connector.TestPoint(pt, exclude):

   217

                return connector

   218

        return None

   219

   220

    # Returns the power rail type

   221

    def SetType(self, type, connectors):

   222

        if type != self.Type or len(self.Connectors) != len(connectors):

   223

            # Create a connector or a blank according to 'connectors' and add it in

   224

            # the connectors list

   225

            self.Type = type

   226

            self.Clean()

   227

            self.Connectors = []

   228

            for connector in connectors:

   229

                self.AddConnector(connector)

   230

            self.RefreshSize()

   231

   232

    # Returns the power rail type

   233

    def GetType(self):

   234

        return self.Type

   235

   236

    # Method called when a LeftDown event have been generated

   237

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

   238

        pos = GetScaledEventPosition(event, dc, scaling)

   239

        # Test if a connector have been handled

   240

        connector = self.TestConnector(pos, False)

   241

        if connector:

   242

            self.Handle = (HANDLE_CONNECTOR, connector)

   243

            self.Parent.SetCursor(wx.StockCursor(wx.CURSOR_HAND))

   244

            self.Selected = False

   245

            # Initializes the last position

   246

            self.oldPos = GetScaledEventPosition(event, dc, scaling)

   247

        else:

   248

            self.RealConnectors = []

   249

            height = self.Size[1] - self.Extensions[0] - self.Extensions[1]

   250

            for connector in self.Connectors:

   251

                position = connector.GetRelPosition()

   252

                self.RealConnectors.append(float(position.y - self.Extensions[0])/float(max(1, height)))

   253

            Graphic_Element.OnLeftDown(self, event, dc, scaling)

   254

   255

    # Method called when a LeftUp event have been generated

   256

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

   257

        handle_type, handle = self.Handle

   258

        if handle_type == HANDLE_CONNECTOR:

   259

            wires = handle.GetWires()

   260

            if len(wires) == 1:

   261

                if handle == wires[0][0].StartConnected:

   262

                    block = wires[0][0].EndConnected.GetParentBlock()

   263

                else:

   264

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

   265

                block.RefreshModel(False)

   266

        Graphic_Element.OnLeftUp(self, event, dc, scaling)

   268

   269

    # Method called when a LeftDClick event have been generated

   270

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

   271

        # Edit the powerrail properties

   272

        self.Parent.EditPowerRailContent(self)

   273

   274

    # Method called when a RightUp event have been generated

   275

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

   276

        pos = GetScaledEventPosition(event, dc, scaling)

   277

        # Popup the menu with special items for a block and a connector if one is handled

   278

        connector = self.TestConnector(pos, False)

   279

        if connector:

   280

            self.Handle = (HANDLE_CONNECTOR, connector)

   281

        #    self.Parent.PopupDivergenceMenu(True)

   282

        #else:

   283

            # Popup the divergence menu without delete branch

   284

        #    self.Parent.PopupDivergenceMenu(False)

   285

   286

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

   287

    def ProcessDragging(self, movex, movey):

   288

        handle_type, handle = self.Handle

   289

        # A connector has been handled

   290

        if handle_type == HANDLE_CONNECTOR:

   291

            self.MoveConnector(handle, movey)

   292

        else:

   293

            Graphic_Element.ProcessDragging(self, movex, movey)

   294

   295

    # Refreshes the power rail model

   296

    def RefreshModel(self, move=True):

   297

        self.Parent.RefreshPowerRailModel(self)

   298

        # If power rail has moved and power rail is of type LEFT, refresh the model 

   299

        # of wires connected to connectors

   300

        if move and self.Type == LEFTRAIL:

   301

            for connector in self.Connectors:

   302

                if connector:

   303

                    connector.RefreshWires()

   304

   305

    # Draws power rail

   306

    def Draw(self, dc):

   307

        dc.SetPen(wx.BLACK_PEN)

   308

        dc.SetBrush(wx.BLACK_BRUSH)

   309

        # Draw a rectangle with the power rail size

   310

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

   311

        # Draw connectors

   312

        for connector in self.Connectors:

   313

            if connector:

   314

                connector.Draw(dc)

   315

        Graphic_Element.Draw(self, dc)

   316

   317

   318

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

   319

#                         Ladder Diagram Contact

   320

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

   321

   322

"""

   323

Class that implements the graphic representation of a contact

   324

"""

   325

   326

class LD_Contact(Graphic_Element):

   327

   328

    # Create a new contact

   329

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

   330

        Graphic_Element.__init__(self, parent)

   331

        self.Type = type

   332

        self.Name = name

   333

        self.Id = id

   334

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

   335

        # Create an input and output connector

   336

        self.Input = Connector(self, "", "BOOL", wx.Point(0, self.Size[1] / 2 + 1), WEST)

   337

        self.Output = Connector(self, "", "BOOL", wx.Point(self.Size[0], self.Size[1] / 2 + 1), EAST)

   338

        self.RefreshNameSize()

   339

        self.RefreshTypeSize()

   340

   341

    # Destructor

   342

    def __del__(self):

   343

        self.Input = None

   344

        self.Output = None

   345

   346

    # Forbids to change the contact size

   347

    def SetSize(self, width, height):

   348

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

   349

            Graphic_Element.SetSize(self, width, height)

   350

            self.RefreshConnectors()

   351

   352

    # Delete this contact by calling the appropriate method

   353

    def Delete(self):

   354

        self.Parent.DeleteContact(self)

   355

   356

    # Unconnect input and output

   357

    def Clean(self):

   358

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

   359

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

   360

   361

    # Refresh the size of text for name

   362

    def RefreshNameSize(self):

   363

        dc = wx.ClientDC(self.Parent)

   364

        if self.Name != "":

   365

            self.NameSize = dc.GetTextExtent(self.Name)

   366

        else:

   367

            self.NameSize = 0, 0

   368

   369

    # Refresh the size of text for type

   370

    def RefreshTypeSize(self):

   371

        dc = wx.ClientDC(self.Parent)

   372

        typetext = ""

   373

        if self.Type == CONTACT_REVERSE:

   374

            typetext = "/"

   375

        elif self.Type == CONTACT_RISING:

   376

            typetext = "P"

   377

        elif self.Type == CONTACT_FALLING:

   378

            typetext = "N"

   379

        if typetext != "":

   380

            self.TypeSize = dc.GetTextExtent(typetext)

   381

        else:

   382

            self.TypeSize = 0, 0

   383

   384

    # Refresh the contact bounding box

   385

    def RefreshBoundingBox(self):

   386

        dc = wx.ClientDC(self.Parent)

   387

        # Calculate the size of the name outside the contact

   388

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

   389

        # Calculate the bounding box size

   390

        if self.Name != "":

   391

            bbx_x = self.Pos.x - max(0, (text_width - self.Size[0]) / 2)

   392

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

   393

            bbx_y = self.Pos.y - (text_height + 2)

   394

            bbx_height = self.Size[1] + (text_height + 2)

   395

        else:

   396

            bbx_x = self.Pos.x

   397

            bbx_width = self.Size[0]

   398

            bbx_y = self.Pos.y

   399

            bbx_height = self.Size[1]

   400

        self.BoundingBox = wx.Rect(bbx_x, bbx_y, bbx_width + 1, bbx_height + 1)

   401

   402

    # Returns the block minimum size

   403

    def GetMinSize(self):

   404

        return LD_ELEMENT_SIZE

   405

   406

    # Refresh the position of wire connected to contact

   407

    def RefreshConnected(self, exclude = []):

   408

        self.Input.MoveConnected(exclude)

   409

        self.Output.MoveConnected(exclude)

   410

   411

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

   412

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

   413

        # if a name is given

   414

        if name:

   415

            # Test input and output connector

   416

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

   417

                return self.Input

   418

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

   419

                return self.Output

   420

        # Test input connector

   421

        input_pos = self.Input.GetRelPosition()

   422

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

   423

            return self.Input

   424

        # Test output connector

   425

        output_pos = self.Output.GetRelPosition()

   426

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

   427

            return self.Output

   428

        return None

   429

   430

    # Returns input and output contact connectors 

   431

    def GetConnectors(self):

   432

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

   433

   434

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

   435

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

   436

        # Test input connector

   437

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

   438

            return self.Input

   439

        # Test output connector

   440

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

   441

            return self.Output

   442

        return None

   443

   444

    # Refresh the positions of the block connectors

   445

    def RefreshConnectors(self):

   446

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

   447

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

   448

        self.RefreshConnected()

   449

   450

    # Changes the contact name

   451

    def SetName(self, name):

   452

        self.Name = name

   453

        self.RefreshNameSize()

   454

   455

    # Returns the contact name

   456

    def GetName(self):

   457

        return self.Name

   458

   459

    # Changes the contact type

   460

    def SetType(self, type):

   461

        self.Type = type

   462

        self.RefreshTypeSize()

   463

   464

    # Returns the contact type

   465

    def GetType(self):

   466

        return self.Type

   467

   468

    # Method called when a LeftDClick event have been generated

   469

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

   470

        # Edit the contact properties

   471

        self.Parent.EditContactContent(self)

   472

   473

    # Refreshes the contact model

   474

    def RefreshModel(self, move=True):

   475

        self.Parent.RefreshContactModel(self)

   476

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

   477

        if move:

   478

            self.Output.RefreshWires()

   479

   480

    # Draws contact

   481

    def Draw(self, dc):

   482

        dc.SetPen(wx.BLACK_PEN)

   483

        dc.SetBrush(wx.BLACK_BRUSH)

   484

        # Draw two rectangles for representing the contact

   485

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

   486

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

   487

        # Draw contact name

   488

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

   489

                self.Pos.y - (self.NameSize[1] + 2))

   490

        # Draw the modifier symbol in the middle of contact

   491

        typetext = ""

   492

        if self.Type == CONTACT_REVERSE:

   493

            typetext = "/"

   494

        elif self.Type == CONTACT_RISING:

   495

            typetext = "P"

   496

        elif self.Type == CONTACT_FALLING:

   497

            typetext = "N"

   498

        if typetext != "":

   499

            dc.DrawText(typetext, self.Pos.x + (self.Size[0] - self.TypeSize[0]) / 2 + 1,

   500

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

   501

        # Draw input and output connectors

   502

        self.Input.Draw(dc)

   503

        self.Output.Draw(dc)

   504

        Graphic_Element.Draw(self, dc)

   505

   506