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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

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

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"""

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Class that implements the graphic representation of a power rail

    36

"""

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class LD_PowerRail(Graphic_Element):

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    # Create a new power rail

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    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):

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        self.Connectors = []

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    56

    # Make a clone of this LD_PowerRail

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

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        powerrail = LD_PowerRail(self.Parent, self.Type, id)

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

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        if pos is not None:

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

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        powerrail.Connectors = []

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        for connector in self.Connectors:

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            if connector is not None:

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                powerrail.Connectors.append(connector.Clone(powerrail))

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            else:

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                powerrail.Connectors.append(None)

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        return powerrail

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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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        for connector in self.Connectors:

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            if connector is not None:

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                rect = rect.Union(connector.GetRedrawRect(movex, movey))

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        if movex != 0 or movey != 0:

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            for connector in self.Connectors:

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                if connector is not None and connector.IsConnected():

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

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        return rect

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    # Forbids to change the power rail size

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    def SetSize(self, width, height):

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        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:

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

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        return False

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    # 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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   100

    # 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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   104

    # 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:

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

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    # 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] + 1, 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(LD_POWERRAIL_WIDTH, LD_LINE_SIZE * len(self.Connectors))

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        self.RefreshBoundingBox()

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    # Returns the block minimum size

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    def GetMinSize(self):

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

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            return LD_POWERRAIL_WIDTH, self.Extensions[0] + self.Extensions[1]

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        else:

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            return LD_POWERRAIL_WIDTH, LD_LINE_SIZE * len(self.Connectors)

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    # 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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    # 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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                connector = Connector(self, "", "BOOL", wx.Point(self.Size[0], 0), EAST)

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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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            miny = min(miny, connect_pos.y - self.Extensions[0])

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            maxy = max(maxy, connect_pos.y - self.Extensions[0])

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        min_pos = self.Pos.y + miny

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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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                connect.SetPosition(wx.Point(connect_pos.x, connect_pos.y - miny))

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        self.Connectors.sort(lambda x, y: x.Pos.y.__cmp__(y.Pos.y))

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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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            maxy = max(maxy, connect_pos.y)

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        self.Size[1] = max(maxy + self.Extensions[1], self.Size[1])

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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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    # 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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            interval = float(height) / float(max(len(self.Connectors) - 1, 1))

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

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                if self.Type == LEFTRAIL:

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                elif self.Type == RIGHTRAIL:

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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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                    elif self.Type == RIGHTRAIL:

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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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        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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            if len(wires) == 1:

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                if handle == wires[0][0].StartConnected:

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                    block = wires[0][0].EndConnected.GetParentBlock()

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                else:

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                    block = wires[0][0].StartConnected.GetParentBlock()

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                block.RefreshModel(False)

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

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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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            movey = max(-self.BoundingBox.y, movey)

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            self.MoveConnector(handle, movey)

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            return 0, movey

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        else:

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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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        Graphic_Element.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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#-------------------------------------------------------------------------------

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#                         Ladder Diagram Contact

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

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"""

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Class that implements the graphic representation of a contact

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"""

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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()

   374

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    # Destructor

   376

    def __del__(self):

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        self.Input = None

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        self.Output = None

   379

   380

    # Make a clone of this LD_Contact

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

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        contact = LD_Contact(self.Parent, self.Type, self.Name, id)

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

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        if pos is not None:

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

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        contact.Input = self.Input.Clone(contact)

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        contact.Output = self.Output.Clone(contact)

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        return contact

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

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

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        if movex != 0 or movey != 0:

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            if self.Input.IsConnected():

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

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            if self.Output.IsConnected():

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

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        return rect

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   402

    # Forbids to change the contact size

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    def SetSize(self, width, height):

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        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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    # Delete this contact by calling the appropriate method

   409

    def Delete(self):

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        self.Parent.DeleteContact(self)

   411

   412

    # Unconnect input and output

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    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)

   416

   417

    # Refresh the size of text for name

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    def RefreshNameSize(self):

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        dc = wx.ClientDC(self.Parent)

   420

        if self.Name != "":

   421

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

   422

        else:

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            self.NameSize = 0, 0

   424

   425

    # Refresh the size of text for type

   426

    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"

   435

        if typetext != "":

   436

            self.TypeSize = dc.GetTextExtent(typetext)

   437

        else:

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            self.TypeSize = 0, 0

   439

   440

    # Refresh the contact bounding box

   441

    def RefreshBoundingBox(self):

   442

        dc = wx.ClientDC(self.Parent)

   443

        # Calculate the size of the name outside the contact

   444

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

   445

        # Calculate the bounding box size

   446

        if self.Name != "":

   447

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

   448

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

   449

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

   450

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

   451

        else:

   452

            bbx_x = self.Pos.x

   453

            bbx_width = self.Size[0]

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            bbx_y = self.Pos.y

   455

            bbx_height = self.Size[1]

   456

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

   457

   458

    # Returns the block minimum size

   459

    def GetMinSize(self):

   460

        return LD_ELEMENT_SIZE

   461

   462

    # Refresh the position of wire connected to contact

   463

    def RefreshConnected(self, exclude = []):

   464

        self.Input.MoveConnected(exclude)

   465

        self.Output.MoveConnected(exclude)

   466

   467

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

   468

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

   469

        # if a name is given

   470

        if name:

   471

            # Test input and output connector

   472

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

   473

                return self.Input

   474

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

   475

                return self.Output

   476

        # Test input connector

   477

        input_pos = self.Input.GetRelPosition()

   478

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

   479

            return self.Input

   480

        # Test output connector

   481

        output_pos = self.Output.GetRelPosition()

   482

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

   483

            return self.Output

   484

        return None

   485

   486

    # Returns input and output contact connectors 

   487

    def GetConnectors(self):

   488

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

   489

   490

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

   491

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

   492

        # Test input connector

   493

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

   494

            return self.Input

   495

        # Test output connector

   496

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

   497

            return self.Output

   498

        return None

   499

   500

    # Refresh the positions of the block connectors

   501

    def RefreshConnectors(self):