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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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from GraphicCommons import *

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from plcopen.structures import *

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

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#                         Function Block Diagram Block

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

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"""

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Class that implements the graphic representation of a function block

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"""

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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")

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    41

class FBD_Block(Graphic_Element):

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    43

    # Create a new block

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    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 = []

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        self.Outputs = []

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        self.Colour = wx.BLACK

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        self.Pen = MiterPen(wx.BLACK)

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

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        self.Highlights = {}

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    60

    # Make a clone of this FBD_Block

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

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

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            name = self.Name

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

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

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        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]

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

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        return block

    73

    74

    def GetConnectorTranslation(self, element):

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

    76

    77

    def Flush(self):

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        for input in self.Inputs:

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            input.Flush()

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        self.Inputs = []

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        for output in self.Outputs:

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            output.Flush()

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        self.Outputs = []

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    # Returns the RedrawRect

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

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

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        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():

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

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        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

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    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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    # 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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    # 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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        # Calculate the size of the name outside the block

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        text_width, text_height = self.NameSize

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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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   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))

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        if lines > 0:

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

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            # Update inputs and outputs positions

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            position = BLOCK_LINE_SIZE + linesize / 2

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            for i in xrange(lines):

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                if scaling is not None:

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

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                else:

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                    ypos = position

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                if i < len(self.Inputs):

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

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                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

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        self.RefreshConnected()

   173

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    # 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

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            for output in self.Outputs:

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                if name == output.GetName():

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                    return output

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

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   194

    def GetInputTypes(self):

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        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))

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    def GetConnectionResultType(self, connector, connectortype):

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        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()

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

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                    resulttype = inputtype

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        for output in self.Outputs:

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

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                outputtype = output.GetConnectedType()

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

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                    resulttype = outputtype

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        return resulttype

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    # Returns all the block connectors

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    def GetConnectors(self):

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

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    # 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

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        return None

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    # Changes the block type

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

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

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            if type != self.Type:

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                self.Type = type

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

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            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

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            # inputs and outputs

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

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            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"]]

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                if blocktype["extensible"]:

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

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                    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"]

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

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            else:

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                self.Colour = wx.RED

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

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

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                self.Description = None

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            if self.ExecutionControl:

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

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

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            self.Pen = MiterPen(self.Colour)

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            self.Clean()

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            # Extract the inputs properties and create the corresponding connector

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            self.Inputs = []

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            for input_name, input_type, input_modifier in inputs:

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

   269

                if input_modifier == "negated":

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                    connector.SetNegated(True)

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                elif input_modifier != "none":

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                    connector.SetEdge(input_modifier)

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                self.Inputs.append(connector)

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            # Extract the outputs properties and create the corresponding connector

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            self.Outputs = []

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            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)

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                if output_modifier == "negated":

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                    connector.SetNegated(True)

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                elif output_modifier != "none":

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                    connector.SetEdge(output_modifier)

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                self.Outputs.append(connector)

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            self.RefreshMinSize()

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            self.RefreshConnectors()

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            self.RefreshBoundingBox()

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    # Returns the block type

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    def GetType(self):

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        return self.Type

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    # Changes the block name

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    def SetName(self, name):

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        self.Name = name

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        self.RefreshNameSize()

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    # Returs the block name

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    def GetName(self):

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        return self.Name

   299

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    # Changes the extension name

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    def SetExtension(self, extension):

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        self.Extension = extension

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    # Returs the extension name

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    def GetExtension(self):

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        return self.Extension

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    # Changes the execution order

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    def SetExecutionOrder(self, executionOrder):

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        self.ExecutionOrder = executionOrder

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        self.RefreshExecutionOrderSize()

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    # Returs the execution order

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    def GetExecutionOrder(self):

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        return self.ExecutionOrder

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    # Returs the execution order

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    def GetExecutionControl(self):

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        return self.ExecutionControl

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   321

    # Refresh the block minimum size

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    def RefreshMinSize(self):

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        # Calculate the inputs maximum width

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        max_input = 0

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        for input in self.Inputs:

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            w, h = input.GetNameSize()

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            max_input = max(max_input, w)

   328

        # Calculate the outputs maximum width

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        max_output = 0

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        for output in self.Outputs:

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            w, h = output.GetNameSize()

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            max_output = max(max_output, w)

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

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

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        self.MinSize = width, height

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   337

    # Returns the block minimum size

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    def GetMinSize(self):

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        return self.MinSize

   340

   341

    # Changes the negated property of the connector handled

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    def SetConnectorNegated(self, negated):

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        handle_type, handle = self.Handle

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        if handle_type == HANDLE_CONNECTOR:

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            handle.SetNegated(negated)

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            self.RefreshModel(False)

   347

   348

    # Changes the edge property of the connector handled

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    def SetConnectorEdge(self, edge):

   350

        handle_type, handle = self.Handle

   351

        if handle_type == HANDLE_CONNECTOR:

   352

            handle.SetEdge(edge)

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            self.RefreshModel(False)

   354

   355

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

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

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##        if not event.Dragging():

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##            pos = event.GetLogicalPosition(dc)

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##            for input in self.Inputs:

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##                rect = input.GetRedrawRect()

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

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##                    print "Find input"

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

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##                    tip.SetBoundingRect(rect)

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

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    # Method called when a LeftDClick event have been generated

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

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        # Edit the block properties

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        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)

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

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        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):

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        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:

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            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)