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#!/usr/bin/env python

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

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

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#based on the plcopen standard. 

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#

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

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#

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#See COPYING file for copyrights details.

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#

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

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#modify it under the terms of the GNU General Public

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#License as published by the Free Software Foundation; either

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

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#

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

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

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

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#General Public License for more details.

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#

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

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

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

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    25

import wx

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    27

from graphics.GraphicCommons import *

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from plcopen.structures import *

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    30

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

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#                         Function Block Diagram Block

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

    33

    34

"""

    35

Class that implements the graphic representation of a function block

    36

"""

    37

    38

def TestConnectorName(name, block_type):

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    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)

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        self.SetExecutionOrder(executionOrder)

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        self.Inputs = []

    54

        self.Outputs = []

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        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:

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            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:

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            input.Flush()

    80

        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):

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        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):

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        for input in self.Inputs:

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            input.UnConnect(delete = True)

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        for output in self.Outputs:

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            output.UnConnect(delete = True)

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   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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    # 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])

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            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

   157

        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_scaling(self.Pos.y + position, 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)

   180

   181

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

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    def GetConnector(self, position, output_name = None, input_name = None):

   183

        if input_name is not None:

   184

            # Test each input connector

   185

            for input in self.Inputs:

   186

                if input_name == input.GetName():

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                    return input

   188

        if output_name is not None:

   189

            # Test each output connector

   190

            for output in self.Outputs:

   191

                if output_name == output.GetName():

   192

                    return output

   193

        if input_name is None and output_name is None:

   194

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

   195

        return None

   196

   197

    def GetInputTypes(self):

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

   199

   200

    def SetOutputValues(self, values):

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        for output in self.Outputs:

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

   203

   204

    def GetConnectionResultType(self, connector, connectortype):

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

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            return connectortype

   207

        resulttype = connectortype

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        for input in self.Inputs:

   209

            if input != connector and input.GetType(True) == "ANY" and TestConnectorName(input.GetName(), self.Type):

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                inputtype = input.GetConnectedType()

   211

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

   212

                    resulttype = inputtype

   213

        for output in self.Outputs:

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            if output != connector and output.GetType(True) == "ANY" and TestConnectorName(output.GetName(), self.Type):

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                outputtype = output.GetConnectedType()

   216

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

   217

                    resulttype = outputtype

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        return resulttype

   219

   220

    # Returns all the block connectors

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    def GetConnectors(self):

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

   223

   224

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

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

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        # 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

   234

        return None

   235

   236

    # Changes the block type

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

   238

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

   239

            if type != self.Type:

   240

                self.Type = type

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

   242

            self.Extension = extension

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            self.ExecutionControl = executionControl

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

   245

            # inputs and outputs

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

   247

            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"]]

   251

                if blocktype["extensible"]:

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

   253

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

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                        start += 1

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

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                comment = blocktype["comment"]

   257

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

   258

            else:

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                self.Colour = wx.RED

   260

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

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

   262

                self.Description = None

   263

            if self.ExecutionControl:

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

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

   266

            self.Pen = MiterPen(self.Colour)

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   268

            # Extract the inputs properties and create or modify the corresponding connector

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            input_connectors = []

   270

            for input_name, input_type, input_modifier in inputs:

   271

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

   272

                if input_modifier == "negated":

   273

                    connector.SetNegated(True)

   274

                elif input_modifier != "none":

   275

                    connector.SetEdge(input_modifier)

   276

                for input in self.Inputs:

   277

                    if input.GetName() == input_name:

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                        wires = input.GetWires()[:]

   279

                        input.UnConnect()

   280

                        for wire in wires:

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                            connector.Connect(wire)

   282

                        break

   283

                input_connectors.append(connector)

   284

            for input in self.Inputs:

   285

                input.UnConnect(delete = True)

   286

            self.Inputs = input_connectors

   287

   288

            # Extract the outputs properties and create or modify the corresponding connector

   289

            output_connectors = []

   290

            for output_name, output_type, output_modifier in outputs:

   291

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

   292

                if output_modifier == "negated":

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                    connector.SetNegated(True)

   294

                elif output_modifier != "none":

   295

                    connector.SetEdge(output_modifier)

   296

                for output in self.Outputs:

   297

                    if output.GetName() == output_name:

   298

                        wires = output.GetWires()[:]

   299

                        output.UnConnect()

   300

                        for wire in wires:

   301

                            connector.Connect(wire)

   302

                        break

   303

                output_connectors.append(connector)

   304

            for output in self.Outputs:

   305

                output.UnConnect(delete = True)

   306

            self.Outputs = output_connectors

   307

   308

            self.RefreshMinSize()

   309

            self.RefreshConnectors()

   310

            for output in self.Outputs:

   311

                output.RefreshWires()

   312

            self.RefreshBoundingBox()

   313

   314

    # Returns the block type

   315

    def GetType(self):

   316

        return self.Type

   317

   318

    # Changes the block name

   319

    def SetName(self, name):

   320

        self.Name = name

   321

        self.RefreshNameSize()

   322

   323

    # Returs the block name

   324

    def GetName(self):

   325

        return self.Name

   326

   327

    # Changes the extension name

   328

    def SetExtension(self, extension):

   329

        self.Extension = extension

   330

   331

    # Returs the extension name

   332

    def GetExtension(self):

   333

        return self.Extension

   334

   335

    # Changes the execution order

   336

    def SetExecutionOrder(self, executionOrder):

   337

        self.ExecutionOrder = executionOrder

   338

        self.RefreshExecutionOrderSize()

   339

   340

    # Returs the execution order

   341

    def GetExecutionOrder(self):

   342

        return self.ExecutionOrder

   343

   344

    # Returs the execution order

   345

    def GetExecutionControl(self):

   346

        return self.ExecutionControl

   347

   348

    # Refresh the block minimum size

   349

    def RefreshMinSize(self):

   350

        # Calculate the inputs maximum width

   351

        max_input = 0

   352

        for input in self.Inputs:

   353

            w, h = input.GetNameSize()

   354

            max_input = max(max_input, w)

   355

        # Calculate the outputs maximum width

   356

        max_output = 0

   357

        for output in self.Outputs:

   358

            w, h = output.GetNameSize()

   359

            max_output = max(max_output, w)

   360

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

   361

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

   362

        self.MinSize = width, height

   363

   364

    # Returns the block minimum size

   365

    def GetMinSize(self):

   366

        return self.MinSize

   367

   368

    # Changes the negated property of the connector handled

   369

    def SetConnectorNegated(self, negated):

   370

        handle_type, handle = self.Handle

   371

        if handle_type == HANDLE_CONNECTOR:

   372

            handle.SetNegated(negated)

   373

            self.RefreshModel(False)

   374

   375

    # Changes the edge property of the connector handled

   376

    def SetConnectorEdge(self, edge):

   377

        handle_type, handle = self.Handle

   378

        if handle_type == HANDLE_CONNECTOR:

   379

            handle.SetEdge(edge)

   380

            self.RefreshModel(False)

   381

   382

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

   383

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

   384

##        if not event.Dragging():

   385

##            pos = event.GetLogicalPosition(dc)

   386

##            for input in self.Inputs:

   387

##                rect = input.GetRedrawRect()

   388

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

   389

##                    print "Find input"

   390

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

   391

##                    tip.SetBoundingRect(rect)

   392

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

   393

   394

    # Method called when a LeftDClick event have been generated

   395

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

   396

        # Edit the block properties

   397

        self.Parent.EditBlockContent(self)

   398

   399

    # Method called when a RightUp event have been generated

   400

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

   401

        pos = GetScaledEventPosition(event, dc, scaling)

   402

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

   403

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

   404

        if connector:

   405

            self.Handle = (HANDLE_CONNECTOR, connector)

   406

            self.Parent.PopupBlockMenu(connector)

   407

        else:

   408

            self.Parent.PopupBlockMenu()

   409

   410

    # Refreshes the block model

   411

    def RefreshModel(self, move=True):

   412

        self.Parent.RefreshBlockModel(self)

   413

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

   414

        if move:

   415

            for output in self.Outputs:

   416

                output.RefreshWires()

   417

   418

    def GetToolTipValue(self):

   419

        return self.Description

   420

   421

    # Adds an highlight to the block

   422

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

   423

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

   424

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

   425

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

   426

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

   427

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

   428

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

   429

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

   430

   431

    # Removes an highlight from the block

   432

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

   433

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

   434

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

   435

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

   436

                self.Highlights.pop(infos[0])

   437

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

   438

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

   439

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

   440

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

   441

   442

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

   443

    def ClearHighlight(self, highlight_type=None):

   444

        if highlight_type is None:

   445

            self.Highlights = {}

   446

        else:

   447

            highlight_items = self.Highlights.items()

   448

            for name, highlights in highlight_items:

   449

                highlights = ClearHighlights(highlights, highlight_type)

   450

                if len(highlights) == 0:

   451

                    self.Highlights.pop(name)

   452

        for input in self.Inputs:

   453

            input.ClearHighlights(highlight_type)

   454

        for output in self.Outputs:

   455

            output.ClearHighlights(highlight_type)

   456

   457

    # Draws block

   458

    def Draw(self, dc):

   459

        Graphic_Element.Draw(self, dc)

   460

        dc.SetPen(self.Pen)

   461

        dc.SetBrush(wx.WHITE_BRUSH)

   462

        dc.SetTextForeground(self.Colour)

   463

   464

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

   465

            name_size = dc.GetTextExtent(self.Name)

   466

            type_size = dc.GetTextExtent(self.Type)

   467

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

   468

        else:

   469

            name_size = self.NameSize

   470

            type_size = self.TypeSize

   471

            executionorder_size = self.ExecutionOrderSize

   472

   473

        # Draw a rectangle with the block size

   474

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

   475

        # Draw block name and block type

   476

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

   477

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

   478

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

   479

                    self.Pos.y + 5)

   480

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

   481

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

   482

        # Draw inputs and outputs connectors

   483

        for input in self.Inputs:

   484

            input.Draw(dc)

   485

        for output in self.Outputs:

   486

            output.Draw(dc)

   487

        if self.ExecutionOrder != 0:

   488

            # Draw block execution order

   489

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

   490

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

   491

   492

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

   493

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

   494

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

   495

   496

   497

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

   498

#                        Function Block Diagram Variable

   499

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

   500

   501

"""

   502

Class that implements the graphic representation of a variable

   503

"""

   504

   505

class FBD_Variable(Graphic_Element):

   506

   507

    # Create a new variable

   508

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

   509

        Graphic_Element.__init__(self, parent)

   510

        self.Type = None

   511

        self.ValueType = None

   512

        self.Id = id

   513

        self.SetName(name)

   514

        self.SetExecutionOrder(executionOrder)

   515

        self.Input = None

   516

        self.Output = None

   517

        self.SetType(type, value_type)

   518

        self.Highlights = []

   519

   520

    # Make a clone of this FBD_Variable

   521

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

   522

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

   523

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

   524

        if pos is not None:

   525

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