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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 plcopen.structures import *

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from PLCControler import ITEM_POU

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from Dialogs import *

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SCROLLBAR_UNIT = 10

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WINDOW_BORDER = 10

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SCROLL_ZONE = 10

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def AppendMenu(parent, help, id, kind, text):

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    if wx.VERSION >= (2, 6, 0):

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        parent.Append(help=help, id=id, kind=kind, text=text)

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    else:

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        parent.Append(helpString=help, id=id, kind=kind, item=text)

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if wx.Platform == '__WXMSW__':

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    faces = { 'times': 'Times New Roman',

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              'mono' : 'Courier New',

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              'helv' : 'Arial',

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              'other': 'Comic Sans MS',

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              'size' : 20,

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             }

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else:

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    faces = { 'times': 'Times',

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              'mono' : 'Courier',

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              'helv' : 'Helvetica',

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              'other': 'new century schoolbook',

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              'size' : 20,

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             }

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

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#                       Graphic elements Viewer base class

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

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# ID Constants for alignment menu items

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[ID_VIEWERALIGNMENTMENUITEMS0, ID_VIEWERALIGNMENTMENUITEMS1,

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 ID_VIEWERALIGNMENTMENUITEMS2, ID_VIEWERALIGNMENTMENUITEMS4,

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 ID_VIEWERALIGNMENTMENUITEMS5, ID_VIEWERALIGNMENTMENUITEMS6,

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] = [wx.NewId() for _init_coll_AlignmentMenu_Items in range(6)]

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# ID Constants for contextual menu items

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[ID_VIEWERCONTEXTUALMENUITEMS0, ID_VIEWERCONTEXTUALMENUITEMS1,

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 ID_VIEWERCONTEXTUALMENUITEMS2, ID_VIEWERCONTEXTUALMENUITEMS3,

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 ID_VIEWERCONTEXTUALMENUITEMS5, ID_VIEWERCONTEXTUALMENUITEMS6,

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 ID_VIEWERCONTEXTUALMENUITEMS8, ID_VIEWERCONTEXTUALMENUITEMS9,

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 ID_VIEWERCONTEXTUALMENUITEMS11, ID_VIEWERCONTEXTUALMENUITEMS12,

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 ID_VIEWERCONTEXTUALMENUITEMS14, ID_VIEWERCONTEXTUALMENUITEMS16,

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 ID_VIEWERCONTEXTUALMENUITEMS17,

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] = [wx.NewId() for _init_coll_ContextualMenu_Items in range(13)]

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class ViewerDropTarget(wx.TextDropTarget):

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    def __init__(self, parent):

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        wx.TextDropTarget.__init__(self)

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        self.ParentWindow = parent

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    def OnDropText(self, x, y, data):

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        x, y = self.ParentWindow.CalcUnscrolledPosition(x, y)

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        scaling = self.ParentWindow.Scaling

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        values = eval(data)

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        if values[1] == "program":

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            message = wx.MessageDialog(self.ParentWindow, "Programs can't be used by other POUs!", "Error", wx.OK|wx.ICON_ERROR)

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            message.ShowModal()

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            message.Destroy()

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        elif values[1] in ["function", "functionBlock", "program"]:

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            name, type = self.ParentWindow.Controler.GetEditedElementType(self.ParentWindow.GetTagName())

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            if name == values[0]:

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                message = wx.MessageDialog(self.ParentWindow, "\"%s\" can't use itself!"%name, "Error", wx.OK|wx.ICON_ERROR)

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                message.ShowModal()

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                message.Destroy()

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            elif type == "function" and values[1] != "function":

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                message = wx.MessageDialog(self.ParentWindow, "Function Blocks can't be used by Functions!", "Error", wx.OK|wx.ICON_ERROR)

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                message.ShowModal()

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                message.Destroy()

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            elif self.ParentWindow.Controler.PouIsUsedBy(name, values[0]):

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                message = wx.MessageDialog(self.ParentWindow, "\"%s\" is already used by \"%s\"!"%(name, values[0]), "Error", wx.OK|wx.ICON_ERROR)

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                message.ShowModal()

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                message.Destroy()

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            else:

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                blockname = values[2]

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                if values[1] != "function" and blockname == "":

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                    dialog = wx.TextEntryDialog(self.ParentWindow, "Block name", "Please enter a block name", "", wx.OK|wx.CANCEL|wx.CENTRE)

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                    if dialog.ShowModal():

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                        blockname = dialog.GetValue()

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                    dialog.Destroy()

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                id = self.ParentWindow.GetNewId()

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                block = FBD_Block(self.ParentWindow, values[0], blockname, id)

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                width, height = block.GetMinSize()

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                if scaling is not None:

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                    x = round(float(x) / float(scaling[0])) * scaling[0]

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                    y = round(float(y) / float(scaling[1])) * scaling[1]

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                    width = round(float(width) / float(scaling[0]) + 0.5) * scaling[0]

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                    height = round(float(height) / float(scaling[1]) + 0.5) * scaling[1]

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                block.SetPosition(x, y)

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                block.SetSize(width, height)

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                self.ParentWindow.AddBlock(block)

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                self.ParentWindow.Controler.AddEditedElementBlock(self.ParentWindow.GetTagName(), id, values[0], blockname)

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                self.ParentWindow.RefreshBlockModel(block)

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                self.ParentWindow.RefreshBuffer()

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                self.ParentWindow.RefreshScrollBars()

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                self.ParentWindow.ParentWindow.RefreshVariablePanel(self.ParentWindow.GetTagName())

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                self.ParentWindow.Refresh(False)

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        elif values[1] != "location":

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            if values[3] == self.ParentWindow.GetTagName():

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                id = self.ParentWindow.GetNewId()

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                if values[1] == "Output":

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                    var_type = OUTPUT

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                elif values[1] == "InOut":

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                    var_type = INPUT

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                else:

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                    var_type = INPUT

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                variable = FBD_Variable(self.ParentWindow, var_type, values[0], values[2], id)

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                width, height = variable.GetMinSize()

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                if scaling is not None:

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                    x = round(float(x) / float(scaling[0])) * scaling[0]

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                    y = round(float(y) / float(scaling[1])) * scaling[1]

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                    width = round(float(width) / float(scaling[0]) + 0.5) * scaling[0]

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                    height = round(float(height) / float(scaling[1]) + 0.5) * scaling[1]

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                variable.SetPosition(x, y)

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                variable.SetSize(width, height)

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                self.ParentWindow.AddBlock(variable)

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                self.ParentWindow.Controler.AddEditedElementVariable(self.ParentWindow.GetTagName(), id, var_type)

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                self.ParentWindow.RefreshVariableModel(variable)

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                self.ParentWindow.RefreshBuffer()

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                self.ParentWindow.RefreshScrollBars()

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                self.ParentWindow.Refresh(False)

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            else:

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                message = wx.MessageDialog(self.ParentWindow, "Variable don't belong to this POU!", "Error", wx.OK|wx.ICON_ERROR)

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                message.ShowModal()

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                message.Destroy()

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if wx.VERSION >= (2, 8, 0):

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    import wx.aui

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   162

    class MDIViewer(wx.aui.AuiMDIChildFrame):

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        def __init__(self, parent, tagname, window, controler):

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            wx.aui.AuiMDIChildFrame.__init__(self, parent, -1, title = "")

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            sizer = wx.BoxSizer(wx.HORIZONTAL)

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            self.Viewer = Viewer(self, tagname, window, controler)

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            sizer.AddWindow(self.Viewer, 1, border=0, flag=wx.GROW)

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            self.SetSizer(sizer)

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        def GetViewer(self):

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            return self.Viewer

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"""

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Class that implements a Viewer based on a wx.ScrolledWindow for drawing and 

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manipulating graphic elements

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"""

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class Viewer(wx.ScrolledWindow):

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    if wx.VERSION < (2, 6, 0):

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        def Bind(self, event, function, id = None):

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            if id is not None:

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                event(self, id, function)

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            else:

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                event(self, function)

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    # Create Alignment Menu items

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    def _init_coll_AlignmentMenu_Items(self, parent):

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        # Create menu items

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        AppendMenu(parent, help='', id=ID_VIEWERALIGNMENTMENUITEMS0,

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              kind=wx.ITEM_NORMAL, text=u'Left')

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        AppendMenu(parent, help='', id=ID_VIEWERALIGNMENTMENUITEMS1,

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              kind=wx.ITEM_NORMAL, text=u'Center')

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        AppendMenu(parent, help='', id=ID_VIEWERALIGNMENTMENUITEMS2,

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              kind=wx.ITEM_NORMAL, text=u'Right')

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        parent.AppendSeparator()

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        AppendMenu(parent, help='', id=ID_VIEWERALIGNMENTMENUITEMS4,

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              kind=wx.ITEM_NORMAL, text=u'Top')

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        AppendMenu(parent, help='', id=ID_VIEWERALIGNMENTMENUITEMS5,

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              kind=wx.ITEM_NORMAL, text=u'Middle')

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        AppendMenu(parent, help='', id=ID_VIEWERALIGNMENTMENUITEMS6,

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              kind=wx.ITEM_NORMAL, text=u'Bottom')

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        # Link menu event to corresponding called functions

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        self.Bind(wx.EVT_MENU, self.OnAlignLeftMenu,

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              id=ID_VIEWERALIGNMENTMENUITEMS0)

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        self.Bind(wx.EVT_MENU, self.OnAlignCenterMenu,

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              id=ID_VIEWERALIGNMENTMENUITEMS1)

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        self.Bind(wx.EVT_MENU, self.OnAlignRightMenu,

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              id=ID_VIEWERALIGNMENTMENUITEMS2)

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        self.Bind(wx.EVT_MENU, self.OnAlignTopMenu,

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              id=ID_VIEWERALIGNMENTMENUITEMS4)

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        self.Bind(wx.EVT_MENU, self.OnAlignMiddleMenu,

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              id=ID_VIEWERALIGNMENTMENUITEMS5)

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        self.Bind(wx.EVT_MENU, self.OnAlignBottomMenu,

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              id=ID_VIEWERALIGNMENTMENUITEMS6)

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    # Create Contextual Menu items

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    def _init_coll_ContextualMenu_Items(self, parent):

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        # Create menu items

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        AppendMenu(parent, help='', id=ID_VIEWERCONTEXTUALMENUITEMS0,

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              kind=wx.ITEM_RADIO, text=u'No Modifier')

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        AppendMenu(parent, help='', id=ID_VIEWERCONTEXTUALMENUITEMS1,

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              kind=wx.ITEM_RADIO, text=u'Negated')

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        AppendMenu(parent, help='', id=ID_VIEWERCONTEXTUALMENUITEMS2,

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              kind=wx.ITEM_RADIO, text=u'Rising Edge')

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        AppendMenu(parent, help='', id=ID_VIEWERCONTEXTUALMENUITEMS3,

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              kind=wx.ITEM_RADIO, text=u'Falling Edge')

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        parent.AppendSeparator()

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        AppendMenu(parent, help='', id=ID_VIEWERCONTEXTUALMENUITEMS5,

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              kind=wx.ITEM_NORMAL, text=u'Add Wire Segment')

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        AppendMenu(parent, help='', id=ID_VIEWERCONTEXTUALMENUITEMS6,

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              kind=wx.ITEM_NORMAL, text=u'Delete Wire Segment')

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        parent.AppendSeparator()

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        AppendMenu(parent, help='', id=ID_VIEWERCONTEXTUALMENUITEMS8,

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              kind=wx.ITEM_NORMAL, text=u'Add Divergence Branch')

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        AppendMenu(parent, help='', id=ID_VIEWERCONTEXTUALMENUITEMS9,

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              kind=wx.ITEM_NORMAL, text=u'Delete Divergence Branch')

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        parent.AppendSeparator()

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        AppendMenu(parent, help='', id=ID_VIEWERCONTEXTUALMENUITEMS11,

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              kind=wx.ITEM_NORMAL, text=u'Clear Execution Order')

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        AppendMenu(parent, help='', id=ID_VIEWERCONTEXTUALMENUITEMS12,

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              kind=wx.ITEM_NORMAL, text=u'Reset Execution Order')

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        parent.AppendSeparator()

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        parent.AppendMenu(ID_VIEWERCONTEXTUALMENUITEMS14, "Alignment", self.AlignmentMenu)

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        parent.AppendSeparator()

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        AppendMenu(parent, help='', id=ID_VIEWERCONTEXTUALMENUITEMS16,

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              kind=wx.ITEM_NORMAL, text=u'Edit Block')

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        AppendMenu(parent, help='', id=ID_VIEWERCONTEXTUALMENUITEMS17,

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              kind=wx.ITEM_NORMAL, text=u'Delete')

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        # Link menu event to corresponding called functions

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        self.Bind(wx.EVT_MENU, self.OnNoModifierMenu,

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              id=ID_VIEWERCONTEXTUALMENUITEMS0)

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        self.Bind(wx.EVT_MENU, self.OnNegatedMenu,

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              id=ID_VIEWERCONTEXTUALMENUITEMS1)

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        self.Bind(wx.EVT_MENU, self.OnRisingEdgeMenu,

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              id=ID_VIEWERCONTEXTUALMENUITEMS2)

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        self.Bind(wx.EVT_MENU, self.OnFallingEdgeMenu,

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              id=ID_VIEWERCONTEXTUALMENUITEMS3)

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        self.Bind(wx.EVT_MENU, self.OnAddSegmentMenu,

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              id=ID_VIEWERCONTEXTUALMENUITEMS5)

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        self.Bind(wx.EVT_MENU, self.OnDeleteSegmentMenu,

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              id=ID_VIEWERCONTEXTUALMENUITEMS6)

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        self.Bind(wx.EVT_MENU, self.OnAddBranchMenu,

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              id=ID_VIEWERCONTEXTUALMENUITEMS8)

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        self.Bind(wx.EVT_MENU, self.OnDeleteBranchMenu,

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              id=ID_VIEWERCONTEXTUALMENUITEMS9)

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        self.Bind(wx.EVT_MENU, self.OnClearExecutionOrderMenu,

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              id=ID_VIEWERCONTEXTUALMENUITEMS11)

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        self.Bind(wx.EVT_MENU, self.OnResetExecutionOrderMenu,

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              id=ID_VIEWERCONTEXTUALMENUITEMS12)

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        self.Bind(wx.EVT_MENU, self.OnEditBlockMenu,

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              id=ID_VIEWERCONTEXTUALMENUITEMS16)

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        self.Bind(wx.EVT_MENU, self.OnDeleteMenu,

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              id=ID_VIEWERCONTEXTUALMENUITEMS17)

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   280

    # Create and initialize Contextual Menu

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    def _init_menus(self):

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        self.AlignmentMenu = wx.Menu(title='')

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        self.ContextualMenu = wx.Menu(title='')

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   285

        self._init_coll_AlignmentMenu_Items(self.AlignmentMenu)

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        self._init_coll_ContextualMenu_Items(self.ContextualMenu)

   287

   288

    # Create a new Viewer

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    def __init__(self, parent, tagname, window, controler):

   290

        wx.ScrolledWindow.__init__(self, parent, pos=wx.Point(0, 0), size=wx.Size(0, 0), 

   291

            style=wx.SUNKEN_BORDER | wx.HSCROLL | wx.VSCROLL)

   292

        self._init_menus()

   293

        # Adding a rubberband to Viewer

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        self.rubberBand = RubberBand(drawingSurface=self)

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        self.SetBackgroundColour(wx.Colour(255,255,255))

   296

        self.ResetView()

   297

        self.Scaling = None

   298

        self.DrawGrid = True

   299

        self.GridBrush = wx.TRANSPARENT_BRUSH

   300

        self.DrawingWire = False

   301

        self.current_id = 0

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        self.TagName = tagname

   303

   304

        # Initialize Block, Wire and Comment numbers

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        self.block_id = self.wire_id = self.comment_id = 0

   306

   307

        # Initialize Viewer mode to Selection mode

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        self.Mode = MODE_SELECTION

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        self.SavedMode = False

   310

        self.CurrentLanguage = "FBD"

   311

   312

        self.ParentWindow = window

   313

        self.Controler = controler

   314

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        self.SetDropTarget(ViewerDropTarget(self))

   316

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        dc = wx.ClientDC(self)

   318

        self.Font = wx.Font(faces["size"], wx.DEFAULT, wx.NORMAL, wx.NORMAL, faceName = faces["mono"])

   319

        dc.SetFont(self.Font)

   320

        width, height = dc.GetTextExtent("ABCDEFGHIJKLMNOPQRSTUVWXYZ")

   321

        while width > 260:

   322

            faces["size"] -= 1

   323

            self.Font = wx.Font(faces["size"], wx.DEFAULT, wx.NORMAL, wx.NORMAL, faceName = faces["mono"])

   324

            dc.SetFont(self.Font)

   325

            width, height = dc.GetTextExtent("ABCDEFGHIJKLMNOPQRSTUVWXYZ")

   326

   327

        # Link Viewer event to corresponding methods

   328

        self.Bind(wx.EVT_PAINT, self.OnPaint)

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        self.Bind(wx.EVT_LEFT_DOWN, self.OnViewerLeftDown)

   330

        self.Bind(wx.EVT_LEFT_UP, self.OnViewerLeftUp)

   331

        self.Bind(wx.EVT_LEFT_DCLICK, self.OnViewerLeftDClick)

   332

        self.Bind(wx.EVT_RIGHT_DOWN, self.OnViewerRightDown)

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        self.Bind(wx.EVT_RIGHT_UP, self.OnViewerRightUp)

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        self.Bind(wx.EVT_LEAVE_WINDOW, self.OnLeaveViewer)

   335

        self.Bind(wx.EVT_MOTION, self.OnViewerMotion)

   336

        self.Bind(wx.EVT_CHAR, self.OnChar)

   337

        self.Bind(wx.EVT_SCROLLWIN, self.OnMoveWindow)

   338

        self.Bind(wx.EVT_SIZE, self.OnMoveWindow)

   339

   340

    def GetScrolledRect(self, rect):

   341

        rect.x, rect.y = self.CalcScrolledPosition(rect.x, rect.y)

   342

        return rect

   343

   344

    def GetScaling(self):

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        return self.Scaling

   346

   347

    def SetTagName(self, tagname):

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        self.TagName = tagname

   349

   350

    def GetTagName(self):

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        return self.TagName

   352

   353

    def IsViewing(self, tagname):

   354

        return self.TagName == tagname

   355

   356

    # Returns a new id

   357

    def GetNewId(self):

   358

        self.current_id += 1

   359

        return self.current_id

   360

   361

    # Destructor

   362

    def __del__(self):

   363

        self.ResetView()

   364

   365

    def GetLogicalDC(self, buffered=False):

   366

        if buffered:

   367

            dc = wx.BufferedPaintDC(self)

   368

        else:

   369

            dc = wx.ClientDC(self)

   370

        dc.SetFont(self.Font)

   371

        if wx.VERSION >= (2, 6, 0):

   372

            self.DoPrepareDC(dc)

   373

        else:

   374

            self.PrepareDC(dc)

   375

        return dc

   376

   377

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

   378

#                         Element management functions

   379

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

   380

   381

    def AddBlock(self, block):

   382

        self.block_id += 1

   383

        self.Blocks[block] = self.block_id

   384

   385

    def AddWire(self, wire):

   386

        self.wire_id += 1

   387

        self.Wires[wire] = self.wire_id

   388

   389

    def AddComment(self, comment):

   390

        self.comment_id += 1

   391

        self.Comments[comment] = self.comment_id

   392

   393

    def IsBlock(self, block):

   394

        return self.Blocks.get(block, False)

   395

   396

    def IsWire(self, wire):

   397

        return self.Wires.get(wire, False)

   398

   399

    def IsComment(self, comment):

   400

        return self.Comments.get(comment, False)

   401

   402

    def RemoveBlock(self, block):

   403

        self.Blocks.pop(block)

   404

   405

    def RemoveWire(self, wire):

   406

        self.Wires.pop(wire)

   407

   408

    def RemoveComment(self, comment):

   409

        self.Comments.pop(comment)

   410

   411

    def GetElements(self, sort_blocks=False, sort_wires=False, sort_comments=False):

   412

        blocks = self.Blocks.keys()

   413

        wires = self.Wires.keys()

   414

        comments = self.Comments.keys()

   415

        if sort_blocks:

   416

            blocks.sort(lambda x,y:self.Blocks[x].__cmp__(self.Blocks[y]))

   417

        if sort_wires:

   418

            wires.sort(lambda x,y:self.Wires[x].__cmp__(self.Wires[y]))

   419

        if sort_comments:

   420

            comments.sort(lambda x,y:self.Comments[x].__cmp__(self.Comments[y]))

   421

        return blocks + wires + comments

   422

   423

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

   424

#                              Reset functions

   425

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

   426

   427

    # Resets Viewer lists

   428

    def ResetView(self):

   429

        self.Blocks = {}

   430

        self.Wires = {}

   431

        self.Comments = {}

   432

        self.SelectedElement = None

   433

        self.HighlightedElement = None

   434

   435

    # Remove all elements

   436

    def CleanView(self):

   437

        for block in self.Blocks.keys():

   438

            block.Clean()

   439

        self.ResetView()

   440

   441

    # Changes Viewer mode

   442

    def SetMode(self, mode):

   443

        if self.Mode != mode or mode == MODE_SELECTION:

   444

            self.Mode = mode

   445

            self.SavedMode = False

   446

        else:

   447

            self.SavedMode = True

   448

        # Reset selection

   449

        if self.Mode != MODE_SELECTION and self.SelectedElement:

   450

            self.SelectedElement.SetSelected(False)

   451

            self.SelectedElement = None

   452

   453

    # Return current drawing mode

   454

    def GetDrawingMode(self):

   455

        return self.ParentWindow.GetDrawingMode()

   456

   457

    # Buffer the last model state

   458

    def RefreshBuffer(self):

   459

        self.Controler.BufferProject()

   460

        self.ParentWindow.RefreshTitle()

   461

        self.ParentWindow.RefreshEditMenu()

   462

   463

    # Refresh the current scaling

   464

    def RefreshScaling(self, refresh=True):

   465

        properties = self.Controler.GetProjectProperties()

   466

        scaling = properties["scaling"][self.CurrentLanguage]

   467

        if scaling != (0, 0):

   468

            self.Scaling = scaling

   469

            if self.DrawGrid:

   470

                bitmap = wx.EmptyBitmap(*scaling)

   471

                dc = wx.MemoryDC(bitmap)

   472

                dc.SetBackground(wx.Brush(self.GetBackgroundColour()))

   473

                dc.Clear()

   474

                dc.SetPen(wx.Pen(wx.Colour(180, 180, 180)))

   475

                dc.DrawPoint(0, 0)

   476

                self.GridBrush = wx.BrushFromBitmap(bitmap)

   477

            else:

   478

                self.GridBrush = wx.TRANSPARENT_BRUSH

   479

        else:

   480

            self.Scaling = None

   481

            self.GridBrush = wx.TRANSPARENT_BRUSH

   482

        if refresh:

   483

            self.Refresh(False)

   484

   485

   486

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

   487

#                          Refresh functions

   488

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

   489

   490

    def ResetBuffer(self):

   491

        pass

   492