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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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class FBD_Block(Graphic_Element):

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    # Create a new block

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

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        Graphic_Element.__init__(self, parent)

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        self.Type = None

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        self.Extension = None

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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 = wx.BLACK_PEN

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

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    55

    # 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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        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

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    # Destructor

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    def __del__(self):

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        self.Inputs = []

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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

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    # Delete this block by calling the appropriate method

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    def Delete(self):

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        self.Parent.DeleteBlock(self)

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    # 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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   103

    # Refresh the block bounding box

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    def RefreshBoundingBox(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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        # Calculate the bounding box size

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        bbx_x = self.Pos.x - max(min(1, len(self.Inputs)) * CONNECTOR_SIZE, (text_width - self.Size[0]) / 2)

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        bbx_width = self.Size[0] + 1 + (min(1, len(self.Inputs)) + min(1, len(self.Outputs))) * CONNECTOR_SIZE

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        if self.Name != "":

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

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

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        else:

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            bbx_y = self.Pos.y

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            bbx_height = self.Size[1]

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

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    # 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()

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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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    # 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:

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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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        # Test each input connector

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        for input in self.Inputs:

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            input_pos = input.GetRelPosition()

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

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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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            output_pos = output.GetRelPosition()

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

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                return output

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        return None

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    def GetInputTypes(self):

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        return tuple([input.GetType(True) for input in self.Inputs])

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    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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        resulttype = connectortype

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        for input in self.Inputs:

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            name = input.GetName()

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            if input != connector and (name.startswith("IN") or name in ["MN", "MX"]):

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                inputtype = input.GetConnectedType()

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                    resulttype = inputtype

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        for output in self.Outputs:

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            name = output.GetName()

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                outputtype = output.GetConnectedType()

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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, 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, 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, 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 = {}):

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

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

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            # inputs and outputs

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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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            else:

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                self.Colour = wx.RED

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                if "inputs" in connectors:

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                    inputs = connectors["inputs"]

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                else:

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                    inputs = []

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                if "outputs" in connectors:

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                    outputs = connectors["outputs"]

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                else:

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                    outputs = []

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            self.Pen = wx.Pen(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)

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                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

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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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    # 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)

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        # 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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    # Returns the block minimum size

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    def GetMinSize(self):

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        return self.MinSize

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    # 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)

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    # Changes the edge property of the connector handled

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    def SetConnectorEdge(self, edge):

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        handle_type, handle = self.Handle

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        if handle_type == HANDLE_CONNECTOR:

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            handle.SetEdge(edge)

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            self.RefreshModel(False)

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   329

    # 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)

   333

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    # Method called when a RightUp event have been generated

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

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        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, False)

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        if connector:

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            self.Handle = (HANDLE_CONNECTOR, connector)

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            self.Parent.PopupBlockMenu(connector)

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        else:

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            self.Parent.PopupBlockMenu()

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    # Refreshes the block model

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    def RefreshModel(self, move=True):

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        self.Parent.RefreshBlockModel(self)

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

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        if move:

   350

            for output in self.Outputs:

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                output.RefreshWires()

   352

   361

    # Draws block

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    def Draw(self, dc):

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        Graphic_Element.Draw(self, dc)

   364

        dc.SetPen(self.Pen)

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        dc.SetBrush(wx.WHITE_BRUSH)

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        dc.SetTextForeground(self.Colour)

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

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            name_size = dc.GetTextExtent(self.Name)

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            type_size = dc.GetTextExtent(self.Type)

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

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        else:

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            name_size = self.NameSize

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            type_size = self.TypeSize

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            executionorder_size = self.ExecutionOrderSize

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        # Draw a rectangle with the block size

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

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        # Draw block name and block type

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        # Draw inputs and outputs connectors

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        for input in self.Inputs:

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            input.Draw(dc)

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        for output in self.Outputs:

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            output.Draw(dc)

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        if self.ExecutionOrder != 0:

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            # Draw block execution order

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

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

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        dc.SetTextForeground(wx.BLACK)

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   401

   402

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

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#                        Function Block Diagram Variable

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

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   406

"""

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Class that implements the graphic representation of a variable

   408

"""

   409

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class FBD_Variable(Graphic_Element):

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    # Create a new variable

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

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        Graphic_Element.__init__(self, parent)

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        self.Type = None

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        self.ValueType = None

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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.Input = None

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        self.Output = None

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        self.SetType(type, value_type)

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   425

    # Make a clone of this FBD_Variable

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

   427

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

   428

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

   429

        if pos is not None:

   430

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

   431

        if self.Input:

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            variable.Input = self.Input.Clone(variable)

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        if self.Output:

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            variable.Output = self.Output.Clone(variable)

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        return variable

   436

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    # Destructor

   438

    def __del__(self):

   439

        self.Input = None

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        self.Output = None

   441

   442

    # Returns the RedrawRect

   443

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

   444

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

   445

        if movex != 0 or movey != 0:

   446

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

   447

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

   448

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

   449

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

   450

        return rect

   451

   452

    # Unconnect connector

   453

    def Clean(self):

   454

        if self.Input:

   455

            self.Input.UnConnect(delete = True)

   456

        if self.Output:

   457

            self.Output.UnConnect(delete = True)

   458

   459

    # Delete this variable by calling the appropriate method

   460

    def Delete(self):

   461

        self.Parent.DeleteVariable(self)

   462

   463

    # Refresh the size of text for name

   464

    def RefreshNameSize(self):

   465

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

   466

   467

    # Refresh the size of text for execution order

   468

    def RefreshExecutionOrderSize(self):

   469

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

   470

   471

    # Refresh the variable bounding box

   472

    def RefreshBoundingBox(self):

   473

        if self.Type in (OUTPUT, INOUT):

   474

            bbx_x = self.Pos.x - CONNECTOR_SIZE

   475

        else:

   476

            bbx_x = self.Pos.x

   477

        if self.Type == INOUT:

   478

            bbx_width = self.Size[0] + 2 * CONNECTOR_SIZE

   479

        else:

   480

            bbx_width = self.Size[0] + CONNECTOR_SIZE

   481

        bbx_height = self.Size[1]

   482

        if self.ExecutionOrder != 0:

   483

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

   484

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

   485

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

   486

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

   487

   488

    # Refresh the position of the variable connector

   489

    def RefreshConnectors(self):

   490

        scaling = self.Parent.GetScaling()

   491

        if scaling is not None:

   492

            position = round(float(self.Pos.y + self.Size[1] / 2) / float(scaling[1])) * scaling[1] - self.Pos.y

   493

        else:

   494

            position = self.Size[1] / 2

   495

        if self.Input:

   496

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

   497

        if self.Output:

   498

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

   499

        self.RefreshConnected()

   500