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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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#                         Ladder Diagram PowerRail

    32

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

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    34

"""

    35

Class that implements the graphic representation of a power rail

    36

"""

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    38

class LD_PowerRail(Graphic_Element):

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    40

    # Create a new power rail

    41

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

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        Graphic_Element.__init__(self, parent)

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        self.Type = None

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        self.Connectors = []

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        self.RealConnectors = None

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        self.Id = id

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

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        if len(connectors) < 1:

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            connectors = [True]

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        self.SetType(type, connectors)

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    52

    # Destructor

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    def __del__(self):

    54

        self.Connectors = []

    55

    56

    # Forbids to change the power rail size

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    def SetSize(self, width, height):

    58

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

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            Graphic_Element.SetSize(self, width, height)

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            self.RefreshConnectors()

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    # Forbids to select a power rail

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    def HitTest(self, pt):

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

    65

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

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        return False

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    68

    # Forbids to select a power rail

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    def IsInSelection(self, rect):

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

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            return Graphic_Element.IsInSelection(self, rect)

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        return False

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    74

    # Deletes this power rail by calling the appropriate method

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    def Delete(self):

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        self.Parent.DeletePowerRail(self)

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    78

    # Unconnect all connectors

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    def Clean(self):

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        for connector in self.Connectors:

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            if connector:

    82

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

    83

    84

    # Refresh the power rail bounding box

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    def RefreshBoundingBox(self):

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        dc = wx.ClientDC(self.Parent)

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

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    # Refresh the power rail size

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    def RefreshSize(self):

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

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        self.RefreshBoundingBox()

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    94

    # Returns the block minimum size

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    def GetMinSize(self):

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        return 2, LD_LINE_SIZE * len(self.Connectors)

    97

    98

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

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    def AddConnector(self, connector = True):

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

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   102

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

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

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        if connector:

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            if self.Type == LEFTRAIL:

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            elif self.Type == RIGHTRAIL:

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

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            self.Connectors.insert(idx, connector)

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        else:

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            self.Connectors.insert(idx, None)

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        self.RefreshSize()

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        self.RefreshConnectors()

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    # Moves the divergence connector given

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    def MoveConnector(self, connector, movey):

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        position = connector.GetRelPosition()

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

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        miny = self.Size[1]

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        maxy = 0

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        for connect in self.Connectors:

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            connect_pos = connect.GetRelPosition()

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

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        if min_pos == self.Pos.y:

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            for connect in self.Connectors:

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                connect_pos = connect.GetRelPosition()

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        connector.MoveConnected()

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        self.RefreshBoundingBox()

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    # Returns the index in connectors list for the connector given

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    def GetConnectorIndex(self, connector):

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        if connector in self.Connectors:

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            return self.Connectors.index(connector)

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        return None

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

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    def IsNullConnector(self, idx):

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        if idx < len(self.Connectors):

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            return self.Connectors[idx] == None

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        return False

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   151

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

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    def DeleteConnector(self, idx):

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        self.Connectors.pop(idx)

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        self.RefreshConnectors()

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        self.RefreshSize()

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    # Refresh the positions of the power rail connectors

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    def RefreshConnectors(self):

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

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

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

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                position = connector.GetRelPosition()

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

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

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        else:

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            position = self.Extensions[0]

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            for connector in self.Connectors:

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                if connector:

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                    if self.Type == LEFTRAIL:

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

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                    elif self.Type == RIGHTRAIL:

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

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                position += LD_LINE_SIZE

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        self.RefreshConnected()

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    # Refresh the position of wires connected to power rail

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    def RefreshConnected(self, exclude = []):

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        for connector in self.Connectors:

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            if connector:

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                connector.MoveConnected(exclude)

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    # Returns the power rail 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 connector if it exists

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            for connector in self.Connectors:

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

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                    return connector

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        for connector in self.Connectors:

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            if connector:

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                connector_pos = connector.GetRelPosition()

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

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                    return connector

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        return None

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    # Returns all the power rail connectors 

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    def GetConnectors(self):

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

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

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

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        for connector in self.Connectors:

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

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                return connector

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        return None

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    # Returns the power rail type

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    def SetType(self, type, connectors):

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

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

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            # the connectors list

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            self.Type = type

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            self.Clean()

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            self.Connectors = []

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            for connector in connectors:

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                self.AddConnector(connector)

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            self.RefreshSize()

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    # Returns the power rail type

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    def GetType(self):

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        return self.Type

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    # Method called when a LeftDown event have been generated

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

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        pos = GetScaledEventPosition(event, dc, scaling)

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        # Test if a connector have been 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.SetCursor(wx.StockCursor(wx.CURSOR_HAND))

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            self.Selected = False

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            # Initializes the last position

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

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        else:

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            self.RealConnectors = []

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

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            for connector in self.Connectors:

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                position = connector.GetRelPosition()

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

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

   251

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    # Method called when a LeftUp event have been generated

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

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        self.RealConnectors = None

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        handle_type, handle = self.Handle

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        if handle_type == HANDLE_CONNECTOR:

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            wires = handle.GetWires()

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        Graphic_Element.OnLeftUp(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 powerrail properties

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        self.Parent.EditPowerRailContent(self)

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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.PopupDivergenceMenu(True)

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        #else:

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            # Popup the divergence menu without delete branch

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        #    self.Parent.PopupDivergenceMenu(False)

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

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    def ProcessDragging(self, movex, movey):

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        handle_type, handle = self.Handle

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        # A connector has been handled

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        if handle_type == HANDLE_CONNECTOR:

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            self.MoveConnector(handle, movey)

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        else:

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            Graphic_Element.ProcessDragging(self, movex, movey)

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    # Refreshes the power rail model

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    def RefreshModel(self, move=True):

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        self.Parent.RefreshPowerRailModel(self)

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

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        # of wires connected to connectors

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        if move and self.Type == LEFTRAIL:

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            for connector in self.Connectors:

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                if connector:

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                    connector.RefreshWires()

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    # Draws power rail

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    def Draw(self, dc):

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        dc.SetPen(wx.BLACK_PEN)

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        dc.SetBrush(wx.BLACK_BRUSH)

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        # Draw a rectangle with the power rail 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 connectors

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        for connector in self.Connectors:

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            if connector:

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                connector.Draw(dc)

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        Graphic_Element.Draw(self, dc)

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   314

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

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#                         Ladder Diagram Contact

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

   318

   319

"""

   320

Class that implements the graphic representation of a contact

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"""

   322

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class LD_Contact(Graphic_Element):

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    # Create a new contact

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

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        Graphic_Element.__init__(self, parent)

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        self.Type = type

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        self.Name = name

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        self.Id = id

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

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        # Create an input and output connector

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

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

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        self.RefreshNameSize()

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        self.RefreshTypeSize()

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    # Destructor

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    def __del__(self):

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        self.Input = None

   341

        self.Output = None

   342

   343

    # Forbids to change the contact size

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    def SetSize(self, width, height):

   345

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

   346

            Graphic_Element.SetSize(self, width, height)

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            self.RefreshConnectors()

   348

   349

    # Delete this contact by calling the appropriate method

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    def Delete(self):

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        self.Parent.DeleteContact(self)

   352

   353

    # Unconnect input and output

   354

    def Clean(self):

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

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

   357

   358

    # Refresh the size of text for name

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    def RefreshNameSize(self):

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        dc = wx.ClientDC(self.Parent)

   361

        if self.Name != "":

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

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        else:

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            self.NameSize = 0, 0

   365

   366

    # Refresh the size of text for type

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    def RefreshTypeSize(self):

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        dc = wx.ClientDC(self.Parent)

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        typetext = ""

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        if self.Type == CONTACT_REVERSE:

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            typetext = "/"

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        elif self.Type == CONTACT_RISING:

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            typetext = "P"

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        elif self.Type == CONTACT_FALLING:

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            typetext = "N"

   376

        if typetext != "":

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            self.TypeSize = dc.GetTextExtent(typetext)

   378

        else:

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            self.TypeSize = 0, 0

   380

   381

    # Refresh the contact bounding box

   382

    def RefreshBoundingBox(self):

   383

        dc = wx.ClientDC(self.Parent)

   384

        # Calculate the size of the name outside the contact

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

   386

        # Calculate the bounding box size

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        if self.Name != "":

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

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

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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_x = self.Pos.x

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            bbx_width = self.Size[0]

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            bbx_y = self.Pos.y

   396

            bbx_height = self.Size[1]

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

   398

   399

    # Returns the block minimum size

   400

    def GetMinSize(self):

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        return LD_ELEMENT_SIZE

   402

   403

    # Refresh the position of wire connected to contact

   404

    def RefreshConnected(self, exclude = []):

   405

        self.Input.MoveConnected(exclude)

   406

        self.Output.MoveConnected(exclude)

   407

   408

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

   409

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

   410

        # if a name is given

   411

        if name:

   412

            # Test input and output connector

   413

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

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                return self.Input

   415

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

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                return self.Output

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        # Test input connector

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        input_pos = self.Input.GetRelPosition()

   419

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

   420

            return self.Input

   421

        # Test output connector

   422

        output_pos = self.Output.GetRelPosition()

   423

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

   424

            return self.Output

   425

        return None

   426

   427

    # Returns input and output contact connectors 

   428

    def GetConnectors(self):

   429

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

   430

   431

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

   432

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

   433

        # Test input connector

   434

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

   435

            return self.Input

   436

        # Test output connector

   437

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

   438

            return self.Output

   439

        return None

   440

   441

    # Refresh the positions of the block connectors

   442

    def RefreshConnectors(self):

   443

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

   444

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

   445

        self.RefreshConnected()

   446

   447

    # Changes the contact name

   448

    def SetName(self, name):

   449

        self.Name = name

   450

        self.RefreshNameSize()

   451

   452

    # Returns the contact name

   453

    def GetName(self):

   454

        return self.Name

   455

   456

    # Changes the contact type

   457

    def SetType(self, type):

   458

        self.Type = type

   459

        self.RefreshTypeSize()

   460

   461

    # Returns the contact type

   462

    def GetType(self):

   463

        return self.Type

   464

   465

    # Method called when a LeftDClick event have been generated

   466

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

   467

        # Edit the contact properties

   468

        self.Parent.EditContactContent(self)

   469

   470

    # Refreshes the contact model

   471

    def RefreshModel(self, move=True):

   472

        self.Parent.RefreshContactModel(self)

   473

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

   474

        if move:

   475

            self.Output.RefreshWires()

   476

   477

    # Draws contact

   478

    def Draw(self, dc):

   479

        dc.SetPen(wx.BLACK_PEN)

   480

        dc.SetBrush(wx.BLACK_BRUSH)

   481

        # Draw two rectangles for representing the contact

   482

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

   483

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

   484

        # Draw contact name

   485

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

   486

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

   487

        # Draw the modifier symbol in the middle of contact

   488

        typetext = ""

   489

        if self.Type == CONTACT_REVERSE:

   490

            typetext = "/"

   491

        elif self.Type == CONTACT_RISING:

   492

            typetext = "P"

   493

        elif self.Type == CONTACT_FALLING:

   494

            typetext = "N"

   495

        if typetext != "":

   496

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

   497

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

   498

        # Draw input and output connectors

   499

        self.Input.Draw(dc)

   500

        self.Output.Draw(dc)

   501

        Graphic_Element.Draw(self, dc)

   502

   503

   504

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

   505

#                         Ladder Diagram Coil

   506

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

   507