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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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    40

    # 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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        self.Connectors = []

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    58

    # 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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        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

    83

    84

    # 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, 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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   102

    # 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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   106

    # 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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        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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   128

    # 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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        scaling = self.Parent.GetScaling()

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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.RealConnectors:

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                    position = self.Extensions[0] + int(round(self.RealConnectors[i] * height))

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                else:

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                    position = self.Extensions[0] + int(round(i * interval))

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                if scaling is not None:

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

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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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        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 scaling is not None:

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

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                    else:

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                        ypos = position

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                    if self.Type == LEFTRAIL:

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

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                    elif self.Type == RIGHTRAIL:

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

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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, direction = None, exclude = True):

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        for connector in self.Connectors:

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            if connector and connector.TestPoint(pt, direction, 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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        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)

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

   295

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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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        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, centered, 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)

   326

            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, centered, 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)

   337

        # 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:

   340

            for connector in self.Connectors:

   341

                if connector:

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                    connector.RefreshWires()

   343

   344

    # 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)

   354

        # 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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   359

   360

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

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#                         Ladder Diagram Contact

   362

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

   363

   364

"""

   365

Class that implements the graphic representation of a contact

   366

"""

   367

   368

class LD_Contact(Graphic_Element):

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   370

    # Create a new contact

   371

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

   372

        Graphic_Element.__init__(self, parent)

   373

        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])

   377

        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.RefreshNameSize()

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        self.RefreshTypeSize()

   386

   420

   421

    # Make a clone of this LD_Contact

   422

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

   423

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

   424

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

   425

        if pos is not None:

   426

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

   427

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

   428

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

   429

        return contact

   430

   431

    # Returns the RedrawRect

   432

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

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

   434

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

   435

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

   436

        if movex != 0 or movey != 0:

   437

            if self.Input.IsConnected():

   438

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

   439

            if self.Output.IsConnected():

   440

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

   441

        return rect

   442

   443

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

   444

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

   445

   446

    # Forbids to change the contact size

   447

    def SetSize(self, width, height):

   448

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

   449

            Graphic_Element.SetSize(self, width, height)

   450

            self.RefreshConnectors()

   451

   452

    # Delete this contact by calling the appropriate method

   453

    def Delete(self):

   454

        self.Parent.DeleteContact(self)

   455

   456

    # Unconnect input and output

   457

    def Clean(self):

   458

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

   459

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

   460

   461

    # Refresh the size of text for name

   462

    def RefreshNameSize(self):

   463

        if self.Name != "":

   464

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

   465

        else:

   466

            self.NameSize = 0, 0

   467

   468

    # Refresh the size of text for type

   469

    def RefreshTypeSize(self):

   470

        typetext = ""

   471

        if self.Type == CONTACT_REVERSE:

   472

            typetext = "/"

   473

        elif self.Type == CONTACT_RISING:

   474

            typetext = "P"

   475

        elif self.Type == CONTACT_FALLING:

   476

            typetext = "N"

   477

        if typetext != "":

   478

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

   479

        else:

   480

            self.TypeSize = 0, 0

   481

   482

    # Refresh the contact bounding box

   483

    def RefreshBoundingBox(self):

   484

        # Calculate the size of the name outside the contact

   485

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

   486

        # Calculate the bounding box size

   487

        if self.Name != "":

   488

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

   489

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

   490

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

   491

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

   492

        else:

   493

            bbx_x = self.Pos.x

   494

            bbx_width = self.Size[0]

   495

            bbx_y = self.Pos.y

   496

            bbx_height = self.Size[1]

   497

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

   498

   499

    # Returns the block minimum size