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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

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"""

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class LD_PowerRail(Graphic_Element):

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    # Create a new power rail

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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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        self.SetType(type, connectors)

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    50

    def Flush(self):

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        for connector in self.Connectors:

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        self.Connectors = []

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    # Make a clone of this LD_PowerRail

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

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        powerrail = LD_PowerRail(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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        else:

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            powerrail.SetPosition(self.Pos.x, self.Pos.y)

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        powerrail.Connectors = []

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        for connector in self.Connectors:

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        return powerrail

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    68

    def GetConnectorTranslation(self, element):

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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 movex != 0 or movey != 0:

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            for connector in self.Connectors:

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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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    91

    # 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, exclude=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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   103

    # 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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    # Unconnect all connectors

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    def Clean(self):

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        for connector in self.Connectors:

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    # Refresh the power rail bounding box

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    def RefreshBoundingBox(self):

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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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   116

    # Refresh the power rail size

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    def RefreshSize(self):

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

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

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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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    # 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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        scaling = self.Parent.GetScaling()

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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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    # 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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                    return connector

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        return self.FindNearestConnector(position, [connector for connector in self.Connectors if connector is not None])

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    # Returns all the power rail connectors 

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    def GetConnectors(self):

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        connectors = [connector for connector in self.Connectors if connector]

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        if self.Type == LEFTRAIL:

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            return {"inputs": [], "outputs": connectors}

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        else:

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            return {"inputs": connectors, "outputs": []}

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

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

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        for connector in self.Connectors:

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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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            # 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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            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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        self.RealConnectors = []

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

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        if height > 0:

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            for connector in self.Connectors:

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                position = connector.GetRelPosition()

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

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        elif len(self.Connectors) > 1:

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            self.RealConnectors = map(lambda x : x * 1 / (len(self.Connectors) - 1), xrange(len(self.Connectors)))

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        else:

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            self.RealConnectors = [0.5]

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

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

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        self.RealConnectors = None

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    # Method called when a LeftDown event have been generated

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    def OnRightDown(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, exclude=False)

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        if connector:

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            self.Handle = (HANDLE_CONNECTOR, connector)

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            wx.CallAfter(self.Parent.SetCurrentCursor, 1)

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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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            Graphic_Element.OnRightDown(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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        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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            Graphic_Element.OnRightUp(self, event, dc, scaling)

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        else:

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            self.Parent.PopupDefaultMenu()

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    def Resize(self, x, y, width, height):

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        self.Move(x, y)

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

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            self.SetSize(width, height)

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        else:

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            self.SetSize(LD_POWERRAIL_WIDTH, height)

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

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    def ProcessDragging(self, movex, movey, event, scaling):

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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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            if scaling is not None:

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                position = handle.GetRelPosition()

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

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            self.MoveConnector(handle, movey)

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            return 0, movey

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        else:

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            return Graphic_Element.ProcessDragging(self, movex, movey, event, scaling)

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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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    # 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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        if self.Type == LEFTRAIL:

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

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        else:

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

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        # Draw connectors

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        for connector in self.Connectors:

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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, DebugDataConsumer):

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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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        DebugDataConsumer.__init__(self)

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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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        self.Errors = {}

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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.PreviousValue = False

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        self.PreviousSpreading = False

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        self.RefreshNameSize()

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        self.RefreshTypeSize()

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    def Flush(self):

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        if self.Input is not None:

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            self.Input.Flush()

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            self.Input = None

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        if self.Output is not None:

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            self.Output.Flush()

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            self.Output = None

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    def SetForced(self, forced):

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        if self.Forced != forced:

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            self.Forced = forced

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            if self.Visible:

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                self.Parent.UpdateRefreshRect(self.GetRedrawRect())

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    def SetValue(self, value):

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        if self.Type == CONTACT_RISING:

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            refresh = self.Value and not self.PreviousValue

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        elif self.Type == CONTACT_FALLING:

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            refresh = not self.Value and self.PreviousValue

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        else:

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            refresh = False

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        self.PreviousValue = self.Value

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        self.Value = value

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        if self.Value != self.PreviousValue or refresh:

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            if self.Visible:

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                self.Parent.UpdateRefreshRect(self.GetRedrawRect())

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            self.SpreadCurrent()

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   393

    def SpreadCurrent(self):

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        if self.Parent.Debug:

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            if self.Value is None:

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                self.Value = False

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            spreading = self.Input.ReceivingCurrent()

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            if self.Type == CONTACT_NORMAL:

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                spreading &= self.Value

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            elif self.Type == CONTACT_REVERSE:

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                spreading &= not self.Value

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            elif self.Type == CONTACT_RISING:

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                spreading &= self.Value and not self.PreviousValue

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            elif self.Type == CONTACT_FALLING:

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                spreading &= not self.Value and self.PreviousValue

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            else:

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                spreading = False

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            if spreading and not self.PreviousSpreading:

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                self.Output.SpreadCurrent(True)

   410

            elif not spreading and self.PreviousSpreading:

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                self.Output.SpreadCurrent(False)

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            self.PreviousSpreading = spreading

   413

   414

    # Make a clone of this LD_Contact

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

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        contact = LD_Contact(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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        else:

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            contact.SetPosition(self.Pos.x, self.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

   425

   426

    def GetConnectorTranslation(self, element):

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        return {self.Input : element.Input, self.Output : element.Output}

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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))

   433

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

   434

        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))

   437

            if self.Output.IsConnected():

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

   439

        return rect

   440

   441

    def ProcessDragging(self, movex, movey, event, scaling):

   442

        return Graphic_Element.ProcessDragging(self, movex, movey, event, scaling, height_fac = 2)

   443

   444

    # Forbids to change the contact size

   445

    def SetSize(self, width, height):

   446

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

   447

            Graphic_Element.SetSize(self, width, height)

   448

            self.RefreshConnectors()

   449

   450

    # Delete this contact by calling the appropriate method

   451

    def Delete(self):

   452

        self.Parent.DeleteContact(self)

   453

   454

    # Unconnect input and output

   455

    def Clean(self):

   456

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

   457

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

   458

   459

    # Refresh the size of text for name

   460

    def RefreshNameSize(self):

   461

        if self.Name != "":

   462

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

   463

        else:

   464

            self.NameSize = 0, 0

   465

   466

    # Refresh the size of text for type

   467

    def RefreshTypeSize(self):

   468

        typetext = ""

   469

        if self.Type == CONTACT_REVERSE:

   470

            typetext = "/"

   471

        elif self.Type == CONTACT_RISING:

   472

            typetext = "P"

   473

        elif self.Type == CONTACT_FALLING:

   474

            typetext = "N"

   475

        if typetext != "":

   476

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

   477

        else:

   478

            self.TypeSize = 0, 0

   479

   480

    # Refresh the contact bounding box

   481

    def RefreshBoundingBox(self):

   482

        # Calculate the size of the name outside the contact

   483

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

   484

        # Calculate the bounding box size

   485

        if self.Name != "":

   486

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

   487

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

   488

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

   489

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

   490

        else:

   491

            bbx_x = self.Pos.x

   492

            bbx_width = self.Size[0]

   493

            bbx_y = self.Pos.y

   494

            bbx_height = self.Size[1]

   495

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