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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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import wx

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    27

from GraphicCommons import *

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from plcopen.structures import *

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    30

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

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#                         Function Block Diagram Block

    32

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

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    34

"""

    35

Class that implements the graphic representation of a function block

    36

"""

    37

    38

def TestConnectorName(name, block_type):

    39

    return name in ["OUT", "MN", "MX"] or name.startswith("IN") and (block_type, name) != ("EXPT", "IN2")

    40

    41

class FBD_Block(Graphic_Element):

    42

    43

    # Create a new block

    44

    def __init__(self, parent, type, name, id = None, extension = 0, inputs = None, connectors = {}, executionControl = False, executionOrder = 0):

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        Graphic_Element.__init__(self, parent)

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        self.Type = None

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        self.Description = None

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        self.Extension = None

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        self.ExecutionControl = False

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        self.Id = id

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        self.SetName(name)

    52

        self.SetExecutionOrder(executionOrder)

    53

        self.Inputs = []

    54

        self.Outputs = []

    55

        self.Colour = wx.BLACK

    56

        self.Pen = MiterPen(wx.BLACK)

    57

        self.SetType(type, extension, inputs, connectors, executionControl)

    58

        self.Highlights = {}

    59

    60

    # Make a clone of this FBD_Block

    61

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

    62

        if self.Name != "" and name == "":

    63

            name = self.Name

    64

        block = FBD_Block(parent, self.Type, name, id, self.Extension)

    65

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

    66

        if pos is not None:

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

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        else:

    69

            block.SetPosition(self.Pos.x, self.Pos.y)

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        block.Inputs = [input.Clone(block) for input in self.Inputs]

    71

        block.Outputs = [output.Clone(block) for output in self.Outputs]

    72

        return block

    73

    74

    def GetConnectorTranslation(self, element):

    75

        return dict(zip(self.Inputs + self.Outputs, element.Inputs + element.Outputs))

    76

    77

    def Flush(self):

    78

        for input in self.Inputs:

    79

            input.Flush()

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        self.Inputs = []

    81

        for output in self.Outputs:

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            output.Flush()

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        self.Outputs = []

    84

    85

    # Returns the RedrawRect

    86

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

    87

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

    88

        if movex != 0 or movey != 0:

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            for input in self.Inputs:

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                if input.IsConnected():

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                    rect = rect.Union(input.GetConnectedRedrawRect(movex, movey))

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            for output in self.Outputs:

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                if output.IsConnected():

    94

                    rect = rect.Union(output.GetConnectedRedrawRect(movex, movey))

    95

        return rect

    96

    97

    # Delete this block by calling the appropriate method

    98

    def Delete(self):

    99

        self.Parent.DeleteBlock(self)

   100

   101

    # Unconnect all inputs and outputs

   102

    def Clean(self):

   103

        for input in self.Inputs:

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            input.UnConnect(delete = True)

   105

        for output in self.Outputs:

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            output.UnConnect(delete = True)

   107

   108

    # Refresh the size of text for name

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    def RefreshNameSize(self):

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

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   112

    # Refresh the size of text for execution order

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    def RefreshExecutionOrderSize(self):

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        self.ExecutionOrderSize = self.Parent.GetTextExtent(str(self.ExecutionOrder))

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   116

    # Returns if the point given is in the bounding box

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    def HitTest(self, pt, connectors=True):

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        if self.Name != "":

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            test_text = self.GetTextBoundingBox().InsideXY(pt.x, pt.y)

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        else:

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            test_text = False

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        test_block = self.GetBlockBoundingBox(connectors).InsideXY(pt.x, pt.y)

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        return test_text or test_block

   124

   125

    # Returns the bounding box of the name outside the block

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    def GetTextBoundingBox(self):

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        # Calculate the size of the name outside the block

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        text_width, text_height = self.NameSize

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        return wx.Rect(self.Pos.x + (self.Size[0] - text_width) / 2,

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                       self.Pos.y - (text_height + 2),

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                       text_width,

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                       text_height)

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   134

    # Returns the bounding box of function block without name outside

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    def GetBlockBoundingBox(self, connectors=True):

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        bbx_x, bbx_y = self.Pos.x, self.Pos.y

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        bbx_width, bbx_height = self.Size

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        if connectors:

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            bbx_x -= min(1, len(self.Inputs)) * CONNECTOR_SIZE

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            bbx_width += (min(1, len(self.Inputs)) + min(1, len(self.Outputs))) * CONNECTOR_SIZE

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        if self.ExecutionOrder != 0:

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            bbx_x = min(bbx_x, self.Pos.x + self.Size[0] - self.ExecutionOrderSize[0])

   143

            bbx_width = max(bbx_width, bbx_width + self.Pos.x + self.ExecutionOrderSize[0] - bbx_x - self.Size[0])

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            bbx_height = bbx_height + (self.ExecutionOrderSize[1] + 2)

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        return wx.Rect(bbx_x, bbx_y, bbx_width + 1, bbx_height + 1)

   146

   147

    # Refresh the block bounding box

   148

    def RefreshBoundingBox(self):

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        self.BoundingBox = self.GetBlockBoundingBox()

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        if self.Name != "":

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            self.BoundingBox.Union(self.GetTextBoundingBox())

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   153

    # Refresh the positions of the block connectors

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    def RefreshConnectors(self):

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        scaling = self.Parent.GetScaling()

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        # Calculate the size for the connector lines

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        lines = max(len(self.Inputs), len(self.Outputs))

   158

        if lines > 0:

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            linesize = max((self.Size[1] - BLOCK_LINE_SIZE) / lines, BLOCK_LINE_SIZE)

   160

            # Update inputs and outputs positions

   161

            position = BLOCK_LINE_SIZE + linesize / 2

   162

            for i in xrange(lines):

   163

                if scaling is not None:

   164

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

   165

                else:

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                    ypos = position

   167

                if i < len(self.Inputs):

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                    self.Inputs[i].SetPosition(wx.Point(0, ypos))

   169

                if i < len(self.Outputs):

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                    self.Outputs[i].SetPosition(wx.Point(self.Size[0], ypos))

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                position += linesize

   172

        self.RefreshConnected()

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   174

    # Refresh the positions of wires connected to inputs and outputs

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    def RefreshConnected(self, exclude = []):

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        for input in self.Inputs:

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            input.MoveConnected(exclude)

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        for output in self.Outputs:

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            output.MoveConnected(exclude)

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   181

    # Returns the block 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

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        if name is not None:

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            # Test each input and output connector

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            #for input in self.Inputs:

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            #    if name == input.GetName():

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            #        return input

   189

            for output in self.Outputs:

   190

                if name == output.GetName():

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                    return output

   192

        return self.FindNearestConnector(position, self.Inputs + self.Outputs)

   193

   194

    def GetInputTypes(self):

   195

        return tuple([input.GetType(True) for input in self.Inputs if input.GetName() != "EN"])

   196

   197

    def SetOutputValues(self, values):

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        for output in self.Outputs:

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            output.SetValue(values.get(ouput.getName(), None))

   200

   201

    def GetConnectionResultType(self, connector, connectortype):

   202

        if not TestConnectorName(connector.GetName(), self.Type):

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            return connectortype

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        resulttype = connectortype

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        for input in self.Inputs:

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            if input != connector and TestConnectorName(input.GetName(), self.Type):

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                inputtype = input.GetConnectedType()

   208

                if resulttype is None or inputtype is not None and self.IsOfType(inputtype, resulttype):

   209

                    resulttype = inputtype

   210

        for output in self.Outputs:

   211

            if output != connector and TestConnectorName(output.GetName(), self.Type):

   212

                outputtype = output.GetConnectedType()

   213

                if resulttype is None or outputtype is not None and self.IsOfType(outputtype, resulttype):

   214

                    resulttype = outputtype

   215

        return resulttype

   216

   217

    # Returns all the block connectors

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    def GetConnectors(self):

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        return {"inputs" : self.Inputs, "outputs" : self.Outputs}

   220

   221

    # Test if point given is on one of the block connectors

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    def TestConnector(self, pt, direction = None, exclude = True):

   223

        # Test each input connector

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        for input in self.Inputs:

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            if input.TestPoint(pt, direction, exclude):

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                return input

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        # Test each output connector

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        for output in self.Outputs:

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            if output.TestPoint(pt, direction, exclude):

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                return output

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        return None

   232

   233

    # Changes the block type

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    def SetType(self, type, extension, inputs = None, connectors = {}, executionControl = False):

   235

        if type != self.Type or self.Extension != extension or executionControl != self.ExecutionControl: 

   236

            if type != self.Type:

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                self.Type = type

   238

                self.TypeSize = self.Parent.GetTextExtent(self.Type)

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            self.Extension = extension

   240

            self.ExecutionControl = executionControl

   241

            # Find the block definition from type given and create the corresponding

   242

            # inputs and outputs

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            blocktype = self.Parent.GetBlockType(type, inputs)

   244

            if blocktype:

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                self.Colour = wx.BLACK

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                inputs = [input for input in blocktype["inputs"]]

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                outputs = [output for output in blocktype["outputs"]]

   248

                if blocktype["extensible"]:

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                    start = int(inputs[-1][0].replace("IN", ""))

   250

                    for i in xrange(self.Extension - len(blocktype["inputs"])):

   251

                        start += 1

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                        inputs.append(("IN%d"%start, inputs[-1][1], inputs[-1][2]))

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                comment = blocktype["comment"]

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                self.Description = _(comment) + blocktype.get("usage", "")

   255

            else:

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                self.Colour = wx.RED

   257

                inputs = connectors.get("inputs", [])

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                outputs = connectors.get("outputs", [])

   259

                self.Description = None

   260

            if self.ExecutionControl:

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                inputs.insert(0, ("EN","BOOL","none"))

   262

                outputs.insert(0, ("ENO","BOOL","none"))

   263

            self.Pen = MiterPen(self.Colour)

   264

            self.Clean()

   265

            # Extract the inputs properties and create the corresponding connector

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            self.Inputs = []

   267

            for input_name, input_type, input_modifier in inputs:

   268

                connector = Connector(self, input_name, input_type, wx.Point(0, 0), WEST, onlyone = True)

   269

                if input_modifier == "negated":

   270

                    connector.SetNegated(True)

   271

                elif input_modifier != "none":

   272

                    connector.SetEdge(input_modifier)

   273

                self.Inputs.append(connector)

   274

            # Extract the outputs properties and create the corresponding connector

   275

            self.Outputs = []

   276

            for output_name, output_type, output_modifier in outputs:

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                connector = Connector(self, output_name, output_type, wx.Point(0, 0), EAST)

   278

                if output_modifier == "negated":

   279

                    connector.SetNegated(True)

   280

                elif output_modifier != "none":

   281

                    connector.SetEdge(output_modifier)

   282

                self.Outputs.append(connector)

   283

            self.RefreshMinSize()

   284

            self.RefreshConnectors()

   285

            self.RefreshBoundingBox()

   286

   287

    # Returns the block type

   288

    def GetType(self):

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        return self.Type

   290

   291

    # Changes the block name

   292

    def SetName(self, name):

   293

        self.Name = name

   294

        self.RefreshNameSize()

   295

   296

    # Returs the block name

   297

    def GetName(self):

   298

        return self.Name

   299

   300

    # Changes the extension name

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    def SetExtension(self, extension):

   302

        self.Extension = extension

   303

   304

    # Returs the extension name

   305

    def GetExtension(self):

   306

        return self.Extension

   307

   308

    # Changes the execution order

   309

    def SetExecutionOrder(self, executionOrder):

   310

        self.ExecutionOrder = executionOrder

   311

        self.RefreshExecutionOrderSize()

   312

   313

    # Returs the execution order

   314

    def GetExecutionOrder(self):

   315

        return self.ExecutionOrder

   316

   317

    # Returs the execution order

   318

    def GetExecutionControl(self):

   319

        return self.ExecutionControl

   320

   321

    # Refresh the block minimum size

   322

    def RefreshMinSize(self):

   323

        # Calculate the inputs maximum width

   324

        max_input = 0

   325

        for input in self.Inputs:

   326

            w, h = input.GetNameSize()

   327

            max_input = max(max_input, w)

   328

        # Calculate the outputs maximum width

   329

        max_output = 0

   330

        for output in self.Outputs:

   331

            w, h = output.GetNameSize()

   332

            max_output = max(max_output, w)

   333

        width = max(self.TypeSize[0] + 10, max_input + max_output + 15)

   334

        height = (max(len(self.Inputs), len(self.Outputs)) + 1) * BLOCK_LINE_SIZE

   335

        self.MinSize = width, height

   336

   337

    # Returns the block minimum size

   338

    def GetMinSize(self):

   339

        return self.MinSize

   340

   341

    # Changes the negated property of the connector handled

   342

    def SetConnectorNegated(self, negated):

   343

        handle_type, handle = self.Handle

   344

        if handle_type == HANDLE_CONNECTOR:

   345

            handle.SetNegated(negated)

   346

            self.RefreshModel(False)

   347

   348

    # Changes the edge property of the connector handled

   349

    def SetConnectorEdge(self, edge):

   350

        handle_type, handle = self.Handle

   351

        if handle_type == HANDLE_CONNECTOR:

   352

            handle.SetEdge(edge)

   353

            self.RefreshModel(False)

   354

   355

##    # Method called when a Motion event have been generated

   356

##    def OnMotion(self, event, dc, scaling):

   357

##        if not event.Dragging():

   358

##            pos = event.GetLogicalPosition(dc)

   359

##            for input in self.Inputs:

   360

##                rect = input.GetRedrawRect()

   361

##                if rect.InsideXY(pos.x, pos.y):

   362

##                    print "Find input"

   363

##                    tip = wx.TipWindow(self.Parent, "Test")

   364

##                    tip.SetBoundingRect(rect)

   365

##        return Graphic_Element.OnMotion(self, event, dc, scaling)

   366

   367

    # Method called when a LeftDClick event have been generated

   368

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

   369

        # Edit the block properties

   370

        self.Parent.EditBlockContent(self)

   371

   372

    # Method called when a RightUp event have been generated

   373

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

   374

        pos = GetScaledEventPosition(event, dc, scaling)

   375

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

   376

        connector = self.TestConnector(pos, exclude=False)

   377

        if connector:

   378

            self.Handle = (HANDLE_CONNECTOR, connector)

   379

            self.Parent.PopupBlockMenu(connector)

   380

        else:

   381

            self.Parent.PopupBlockMenu()

   382

   383

    # Refreshes the block model

   384

    def RefreshModel(self, move=True):

   385

        self.Parent.RefreshBlockModel(self)

   386

        # If block has moved, refresh the model of wires connected to outputs

   387

        if move:

   388

            for output in self.Outputs:

   389

                output.RefreshWires()

   390

   391

    def GetToolTipValue(self):

   392

        return self.Description

   393

   394

    # Adds an highlight to the block

   395

    def AddHighlight(self, infos, start, end ,highlight_type):

   396

        if infos[0] in ["type", "name"] and start[0] == 0 and end[0] == 0:

   397

            highlights = self.Highlights.setdefault(infos[0], [])

   398

            AddHighlight(highlights, (start, end, highlight_type))

   399

        elif infos[0] == "input" and infos[1] < len(self.Inputs):

   400

            self.Inputs[infos[1]].AddHighlight(infos[2:], start, end, highlight_type)

   401

        elif infos[0] == "output" and infos[1] < len(self.Outputs):

   402

            self.Outputs[infos[1]].AddHighlight(infos[2:], start, end, highlight_type)

   403

   404

    # Removes an highlight from the block

   405

    def RemoveHighlight(self, infos, start, end, highlight_type):

   406

        if infos[0] in ["type", "name"]:

   407

            highlights = self.Highlights.get(infos[0], [])

   408

            if RemoveHighlight(highlights, (start, end, highlight_type)) and len(highlights) == 0:

   409

                self.Highlights.pop(infos[0])

   410

        elif infos[0] == "input" and infos[1] < len(self.Inputs):

   411

            self.Inputs[infos[1]].RemoveHighlight(infos[2:], start, end, highlight_type)

   412

        elif infos[0] == "output" and infos[1] < len(self.Outputs):

   413

            self.Outputs[infos[1]].RemoveHighlight(infos[2:], start, end, highlight_type)

   414

   415

    # Removes all the highlights of one particular type from the block

   416

    def ClearHighlight(self, highlight_type=None):

   417

        if highlight_type is None:

   418

            self.Highlights = {}

   419

        else:

   420

            highlight_items = self.Highlights.items()

   421

            for name, highlights in highlight_items:

   422

                highlights = ClearHighlights(highlights, highlight_type)

   423

                if len(highlights) == 0:

   424

                    self.Highlights.pop(name)

   425

        for input in self.Inputs:

   426

            input.ClearHighlights(highlight_type)

   427

        for output in self.Outputs:

   428

            output.ClearHighlights(highlight_type)

   429

   430

    # Draws block

   431

    def Draw(self, dc):

   432

        Graphic_Element.Draw(self, dc)

   433

        dc.SetPen(self.Pen)

   434

        dc.SetBrush(wx.WHITE_BRUSH)

   435

        dc.SetTextForeground(self.Colour)

   436

   437

        if getattr(dc, "printing", False):

   438

            name_size = dc.GetTextExtent(self.Name)

   439

            type_size = dc.GetTextExtent(self.Type)

   440

            executionorder_size = dc.GetTextExtent(str(self.ExecutionOrder))

   441

        else:

   442

            name_size = self.NameSize

   443

            type_size = self.TypeSize

   444

            executionorder_size = self.ExecutionOrderSize

   445

   446

        # Draw a rectangle with the block size

   447

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

   448

        # Draw block name and block type

   449

        name_pos = (self.Pos.x + (self.Size[0] - name_size[0]) / 2,

   450

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

   451

        type_pos = (self.Pos.x + (self.Size[0] - type_size[0]) / 2,

   452

                    self.Pos.y + 5)

   453

        dc.DrawText(self.Name, name_pos[0], name_pos[1])

   454

        dc.DrawText(self.Type, type_pos[0], type_pos[1])

   455

        # Draw inputs and outputs connectors

   456

        for input in self.Inputs:

   457

            input.Draw(dc)

   458

        for output in self.Outputs:

   459

            output.Draw(dc)

   460

        if self.ExecutionOrder != 0:

   461

            # Draw block execution order

   462

            dc.DrawText(str(self.ExecutionOrder), self.Pos.x + self.Size[0] - executionorder_size[0],

   463

                    self.Pos.y + self.Size[1] + 2)

   464

   465

        if not getattr(dc, "printing", False):

   466

            DrawHighlightedText(dc, self.Name, self.Highlights.get("name", []), name_pos[0], name_pos[1])

   467

            DrawHighlightedText(dc, self.Type, self.Highlights.get("type", []), type_pos[0], type_pos[1])

   468

   469

   470

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

   471

#                        Function Block Diagram Variable

   472

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

   473

   474

"""

   475

Class that implements the graphic representation of a variable

   476

"""

   477

   478

class FBD_Variable(Graphic_Element):

   479

   480

    # Create a new variable

   481

    def __init__(self, parent, type, name, value_type, id = None, executionOrder = 0):

   482

        Graphic_Element.__init__(self, parent)

   483

        self.Type = None

   484

        self.ValueType = None

   485

        self.Id = id

   486

        self.SetName(name)

   487

        self.SetExecutionOrder(executionOrder)

   488

        self.Input = None

   489

        self.Output = None

   490

        self.SetType(type, value_type)

   491

        self.Highlights = []

   492

   493

    # Make a clone of this FBD_Variable

   494

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

   495

        variable = FBD_Variable(parent, self.Type, self.Name, self.ValueType, id)