#!/usr/bin/env python
# -*- coding: utf-8 -*-
#This file is part of PLCOpenEditor, a library implementing an IEC 61131-3 editor
#based on the plcopen standard.
#
#Copyright (C): Edouard TISSERANT and Laurent BESSARD
#
#See COPYING file for copyrights details.
#
#This library is free software; you can redistribute it and/or
#modify it under the terms of the GNU General Public
#License as published by the Free Software Foundation; either
#version 2.1 of the License, or (at your option) any later version.
#
#This library is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
#Lesser General Public License for more details.
#
#You should have received a copy of the GNU General Public
#License along with this library; if not, write to the Free Software
#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
from wxPython.wx import *
import wx
from GraphicCommons import *
from plcopen.structures import *
#-------------------------------------------------------------------------------
# Function Block Diagram Block
#-------------------------------------------------------------------------------
"""
Class that implements the graphic representation of a function block
"""
class FBD_Block(Graphic_Element):
# Create a new block
def __init__(self, parent, type, name, id = None, extension = 0, inputs = [], outputs = []):
Graphic_Element.__init__(self, parent)
self.Type = None
self.Name = name
self.Id = id
self.Extension = extension
self.Inputs = []
self.Outputs = []
self.SetType(type)
# Destructor
def __del__(self):
self.Inputs = []
self.Outputs = []
# Delete this block by calling the appropriate method
def Delete(self):
self.Parent.DeleteBlock(self)
# Unconnect all inputs and outputs
def Clean(self):
for input in self.Inputs:
input.UnConnect(delete = True)
for output in self.Outputs:
output.UnConnect(delete = True)
# Refresh the block bounding box
def RefreshBoundingBox(self):
dc = wxClientDC(self.Parent)
# Calculate the size of the name outside the block
text_width, text_height = dc.GetTextExtent(self.Name)
# Calculate the bounding box size
bbx_x = self.Pos.x - max(min(1, len(self.Inputs)) * CONNECTOR_SIZE, (text_width - self.Size[0]) / 2)
bbx_width = self.Size[0] + 1 + (min(1, len(self.Inputs)) + min(1, len(self.Outputs))) * CONNECTOR_SIZE
if self.Name != "":
bbx_y = self.Pos.y - (text_height + 2)
bbx_height = self.Size[1] + (text_height + 2)
else:
bbx_y = self.Pos.y
bbx_height = self.Size[1]
self.BoundingBox = wxRect(bbx_x, bbx_y, bbx_width + 1, bbx_height + 1)
# Refresh the positions of the block connectors
def RefreshConnectors(self):
# Calculate the size for the connector lines
lines = max(len(self.Inputs), len(self.Outputs))
linesize = max((self.Size[1] - BLOCK_LINE_SIZE) / lines, BLOCK_LINE_SIZE)
# Update inputs positions
position = BLOCK_LINE_SIZE + linesize / 2
for input in self.Inputs:
input.SetPosition(wxPoint(0, position))
position += linesize
# Update outputs positions
position = BLOCK_LINE_SIZE + linesize / 2
for output in self.Outputs:
output.SetPosition(wxPoint(self.Size[0], position))
position += linesize
self.RefreshConnected()
# Refresh the positions of wires connected to inputs and outputs
def RefreshConnected(self, exclude = []):
for input in self.Inputs:
input.MoveConnected(exclude)
for output in self.Outputs:
output.MoveConnected(exclude)
# Returns the block connector that starts with the point given if it exists
def GetConnector(self, position):
# Test each input connector
for input in self.Inputs:
input_pos = input.GetRelPosition()
if position.x == self.Pos.x + input_pos.x and position.y == self.Pos.y + input_pos.y:
return input
# Test each output connector
for output in self.Outputs:
output_pos = output.GetRelPosition()
if position.x == self.Pos.x + output_pos.x and position.y == self.Pos.y + output_pos.y:
return output
return None
# Returns all the block connectors
def GetConnectors(self):
return {"inputs" : self.Inputs, "outputs" : self.Outputs}
# Test if point given is on one of the block connectors
def TestConnector(self, pt, exclude = True):
# Test each input connector
for input in self.Inputs:
if input.TestPoint(pt, exclude):
return input
# Test each output connector
for output in self.Outputs:
if output.TestPoint(pt, exclude):
return output
return None
# Changes the block type
def SetType(self, type):
if type != self.Type:
self.Type = type
# Find the block definition from type given and create the corresponding
# inputs and outputs
blocktype = GetBlockType(type)
if blocktype:
inputs = [input for input in blocktype["inputs"]]
outputs = [output for output in blocktype["outputs"]]
if blocktype["extensible"]:
start = int(inputs[-1][0].replace("IN", ""))
for i in xrange(self.Extension - len(blocktype["inputs"])):
start += 1
inputs.append(("IN%d"%start, inputs[-1][1], input[-1][2]))
else:
raise ValueError, "This block type isn't defined"
self.Clean()
# Extract the inputs properties and create the corresponding connector
self.Inputs = []
for input_name, input_type, input_modifier in inputs:
connector = Connector(self, input_name, input_type, wxPoint(0, 0), WEST)
if input_modifier == "negated":
connector.SetNegated(True)
elif input_modifier != "none":
connector.SetEdge(input_modifier)
self.Inputs.append(connector)
# Extract the outputs properties and create the corresponding connector
self.Outputs = []
for output_name, output_type, output_modifier in outputs:
connector = Connector(self, output_name, output_type, wxPoint(0, 0), EAST)
if output_modifier == "negated":
connector.SetNegated(True)
elif output_modifier != "none":
connector.SetEdge(output_modifier)
self.Outputs.append(connector)
self.RefreshConnectors()
self.RefreshBoundingBox()
# Returns the block type
def GetType(self):
return self.Type
# Changes the block name
def SetName(self, name):
self.Name = name
# Returs the block name
def GetName(self):
return self.Name
# Changes the extension name
def SetExtension(self, extension):
self.Extension = extension
# Returs the extension name
def GetExtension(self):
return self.Extension
# Returns the block minimum size
def GetMinSize(self):
dc = wxClientDC(self.Parent)
text_width, text_height = dc.GetTextExtent(self.Type)
# Calculate the inputs maximum width
max_input = 0
for input in self.Inputs:
w, h = dc.GetTextExtent(input.GetName())
max_input = max(max_input, w)
# Calculate the outputs maximum width
max_output = 0
for output in self.Outputs:
w, h = dc.GetTextExtent(output.GetName())
max_output = max(max_output, w)
width = max(text_width + 10, max_input + max_output + 15)
height = (max(len(self.Inputs), len(self.Outputs)) + 1) * BLOCK_LINE_SIZE
return width, height
# Changes the negated property of the connector handled
def SetConnectorNegated(self, negated):
handle_type, handle = self.Handle
if handle_type == HANDLE_CONNECTOR:
handle.SetNegated(negated)
self.RefreshModel(False)
# Changes the edge property of the connector handled
def SetConnectorEdge(self, edge):
handle_type, handle = self.Handle
if handle_type == HANDLE_CONNECTOR:
handle.SetEdge(edge)
self.RefreshModel(False)
# Method called when a LeftDClick event have been generated
def OnLeftDClick(self, event, scaling):
# Edit the block properties
self.Parent.EditBlockContent(self)
# Method called when a RightUp event have been generated
def OnRightUp(self, event, scaling):
pos = GetScaledEventPosition(event, scaling)
# Popup the menu with special items for a block and a connector if one is handled
connector = self.TestConnector(pos, False)
if connector:
self.Handle = (HANDLE_CONNECTOR, connector)
self.Parent.PopupBlockMenu(connector)
else:
self.Parent.PopupBlockMenu()
# Refreshes the block model
def RefreshModel(self, move=True):
self.Parent.RefreshBlockModel(self)
# If block has moved, refresh the model of wires connected to outputs
if move:
for output in self.Outputs:
output.RefreshWires()
# Draws block
def Draw(self, dc):
dc.SetPen(wxBLACK_PEN)
dc.SetBrush(wxWHITE_BRUSH)
# Draw a rectangle with the block size
dc.DrawRectangle(self.Pos.x, self.Pos.y, self.Size[0] + 1, self.Size[1] + 1)
# Draw block name and block type
namewidth, nameheight = dc.GetTextExtent(self.Name)
dc.DrawText(self.Name, self.Pos.x + (self.Size[0] - namewidth) / 2,
self.Pos.y - (nameheight + 2))
typewidth, typeheight = dc.GetTextExtent(self.Type)
dc.DrawText(self.Type, self.Pos.x + (self.Size[0] - typewidth) / 2,
self.Pos.y + 5)
# Draw inputs and outputs connectors
for input in self.Inputs:
input.Draw(dc)
for output in self.Outputs:
output.Draw(dc)
Graphic_Element.Draw(self, dc)
#-------------------------------------------------------------------------------
# Function Block Diagram Variable
#-------------------------------------------------------------------------------
"""
Class that implements the graphic representation of a variable
"""
class FBD_Variable(Graphic_Element):
# Create a new variable
def __init__(self, parent, type, name, value_type, id = None):
Graphic_Element.__init__(self, parent)
self.Type = None
self.ValueType = None
self.Name = name
self.Id = id
self.Input = None
self.Output = None
self.SetType(type, value_type)
# Destructor
def __del__(self):
self.Input = None
self.Output = None
# Unconnect connector
def Clean(self):
if self.Input:
self.Input.UnConnect(delete = True)
if self.Output:
self.Output.UnConnect(delete = True)
# Delete this variable by calling the appropriate method
def Delete(self):
self.Parent.DeleteVariable(self)
# Refresh the variable bounding box
def RefreshBoundingBox(self):
dc = wxClientDC(self.Parent)
if self.Type in (OUTPUT, INOUT):
bbx_x = self.Pos.x - CONNECTOR_SIZE
else:
bbx_x = self.Pos.x
if self.Type == INOUT:
bbx_width = self.Size[0] + 2 * CONNECTOR_SIZE
else:
bbx_width = self.Size[0] + CONNECTOR_SIZE
self.BoundingBox = wxRect(bbx_x, self.Pos.y, bbx_width + 1, self.Size[1] + 1)
# Refresh the position of the variable connector
def RefreshConnectors(self):
if self.Input:
self.Input.SetPosition(wxPoint(0, self.Size[1] / 2))
if self.Output:
self.Output.SetPosition(wxPoint(self.Size[0], self.Size[1] / 2))
self.RefreshConnected(self)
# Refresh the position of wires connected to connector
def RefreshConnected(self, exclude = []):
if self.Input:
self.Input.MoveConnected(exclude)
if self.Output:
self.Output.MoveConnected(exclude)
# Test if point given is on the variable connector
def TestConnector(self, pt, exclude=True):
if self.Input and self.Input.TestPoint(pt, exclude):
return self.Input
if self.Output and self.Output.TestPoint(pt, exclude):
return self.Output
return None
# Returns the block connector that starts with the point given if it exists
def GetConnector(self, position):
# Test input connector if it exists
if self.Input:
input_pos = self.Input.GetRelPosition()
if position.x == self.Pos.x + input_pos.x and position.y == self.Pos.y + input_pos.y:
return self.Input
# Test output connector if it exists
if self.Output:
output_pos = self.Output.GetRelPosition()
if position.x == self.Pos.x + output_pos.x and position.y == self.Pos.y + output_pos.y:
return self.Output
return None
# Returns all the block connectors
def GetConnectors(self):
return {"input" : self.Input, "output" : self.Output}
# Changes the negated property of the variable connector if handled
def SetConnectorNegated(self, negated):
handle_type, handle = self.Handle
if handle_type == HANDLE_CONNECTOR:
handle.SetNegated(negated)
self.RefreshModel(False)
# Changes the variable type
def SetType(self, type, value_type):
if type != self.Type or value_type != self.ValueType:
self.Type = type
self.ValueType = value_type
self.Clean()
self.Input = None
self.Output = None
# Create an input or output connector according to variable type
if self.Type != INPUT:
self.Input = Connector(self, "", value_type, wxPoint(0, 0), WEST)
if self.Type != OUTPUT:
self.Output = Connector(self, "", value_type, wxPoint(0, 0), EAST)
self.RefreshConnectors()
# Returns the variable type
def GetType(self):
return self.Type
# Changes the variable name
def SetName(self, name):
self.Name = name
# Returns the variable name
def GetName(self):
return self.Name
# Returns the variable minimum size
def GetMinSize(self):
dc = wxClientDC(self.Parent)
text_width, text_height = dc.GetTextExtent(self.Name)
return text_width + 10, text_height + 10
# Method called when a LeftDClick event have been generated
def OnLeftDClick(self, event, scaling):
# Edit the variable properties
self.Parent.EditVariableContent(self)
# Method called when a RightUp event have been generated
def OnRightUp(self, event, scaling):
pos = GetScaledEventPosition(event, scaling)
# Popup the menu with special items for a variable and a connector if it's handled
connector = self.TestConnectors(pos, False)
if connector:
self.Handle = (HANDLE_CONNECTOR, connector)
self.Parent.PopupVariableMenu(connector)
else:
self.Parent.PopupVariableMenu()
# Refreshes the variable model
def RefreshModel(self, move=True):
self.Parent.RefreshVariableModel(self)
# If variable has moved and variable is not of type OUTPUT, refresh the model
# of wires connected to output connector
if move and self.Type != OUTPUT:
if self.Output:
self.Output.RefreshWires()
# Draws variable
def Draw(self, dc):
dc.SetPen(wxBLACK_PEN)
dc.SetBrush(wxWHITE_BRUSH)
# Draw a rectangle with the variable size
dc.DrawRectangle(self.Pos.x, self.Pos.y, self.Size[0] + 1, self.Size[1] + 1)
# Draw variable name
namewidth, nameheight = dc.GetTextExtent(self.Name)
dc.DrawText(self.Name, self.Pos.x + (self.Size[0] - namewidth) / 2,
self.Pos.y + (self.Size[1] - nameheight) / 2)
# Draw connectors
if self.Input:
self.Input.Draw(dc)
if self.Output:
self.Output.Draw(dc)
Graphic_Element.Draw(self, dc)
#-------------------------------------------------------------------------------
# Function Block Diagram Connector
#-------------------------------------------------------------------------------
"""
Class that implements the graphic representation of a connection
"""
class FBD_Connector(Graphic_Element):
# Create a new connection
def __init__(self, parent, type, name, id = None):
Graphic_Element.__init__(self, parent)
self.Type = type
self.Name = name
self.Id = id
self.Pos = wxPoint(0, 0)
self.Size = wxSize(0, 0)
# Create an input or output connector according to connection type
if self.Type == CONNECTOR:
self.Connector = Connector(self, "", "ANY", wxPoint(0, 0), WEST)
else:
self.Connector = Connector(self, "", "ANY", wxPoint(0, 0), EAST)
self.RefreshConnectors()
# Destructor
def __del__(self):
self.Connector = None
# Unconnect connector
def Clean(self):
if self.Connector:
self.Connector.UnConnect()
# Delete this connection by calling the appropriate method
def Delete(self):
self.Parent.DeleteConnection(self)
# Refresh the connection bounding box
def RefreshBoundingBox(self):
dc = wxClientDC(self.Parent)
if self.Type == CONNECTOR:
bbx_x = self.Pos.x - CONNECTOR_SIZE
else:
bbx_x = self.Pos.x
bbx_width = self.Size[0] + CONNECTOR_SIZE
self.BoundingBox = wxRect(bbx_x, self.Pos.y, bbx_width, self.Size[1])
# Refresh the position of the connection connector
def RefreshConnectors(self):
if self.Type == CONNECTOR:
self.Connector.SetPosition(wxPoint(0, self.Size[1] / 2))
else:
self.Connector.SetPosition(wxPoint(self.Size[0], self.Size[1] / 2))
self.RefreshConnected(self)
# Refresh the position of wires connected to connector
def RefreshConnected(self, exclude = []):
if self.Connector:
self.Connector.MoveConnected(exclude)
# Test if point given is on the connection connector
def TestConnector(self, pt, exclude=True):
if self.Connector and self.Connector.TestPoint(pt, exclude):
return self.Connector
return None
# Returns the connection connector
def GetConnector(self, position = None):
return self.Connector
# Returns the connection type
def GetType(self):
return self.Type
# Changes the connection name
def SetName(self, name):
self.Name = name
# Returns the connection name
def GetName(self):
return self.Name
# Returns the connection minimum size
def GetMinSize(self):
dc = wxClientDC(self.Parent)
text_width, text_height = dc.GetTextExtent(self.Name)
if text_height % 2 == 1:
text_height += 1
return text_width + text_height + 20, text_height + 10
# Method called when a RightUp event have been generated
def OnRightUp(self, event, scaling):
# Popup the default menu
self.Parent.PopupDefaultMenu()
# Refreshes the connection model
def RefreshModel(self, move=True):
self.Parent.RefreshConnectionModel(self)
# If connection has moved and connection is of type CONTINUATION, refresh
# the model of wires connected to connector
if move and self.Type == CONTINUATION:
if self.Connector:
self.Connector.RefreshWires()
# Draws connection
def Draw(self, dc):
dc.SetPen(wxBLACK_PEN)
dc.SetBrush(wxWHITE_BRUSH)
# Draw a rectangle with the connection size with arrows in
dc.DrawRectangle(self.Pos.x, self.Pos.y, self.Size[0] + 1, self.Size[1] + 1)
namewidth, nameheight = dc.GetTextExtent(self.Name)
arrowsize = min(self.Size[1] / 2, (self.Size[0] - namewidth - 10) / 2)
dc.DrawLine(self.Pos.x, self.Pos.y, self.Pos.x + arrowsize,
self.Pos.y + self.Size[1] / 2)
dc.DrawLine(self.Pos.x + arrowsize, self.Pos.y + self.Size[1] / 2,
self.Pos.x, self.Pos.y + self.Size[1])
dc.DrawLine(self.Pos.x + self.Size[0] - arrowsize, self.Pos.y,
self.Pos.x + self.Size[0], self.Pos.y + self.Size[1] / 2)
dc.DrawLine(self.Pos.x + self.Size[0], self.Pos.y + self.Size[1] / 2,
self.Pos.x + self.Size[0] - arrowsize, self.Pos.y + self.Size[1])
# Draw variable name
dc.DrawText(self.Name, self.Pos.x + (self.Size[0] - namewidth) / 2,
self.Pos.y + (self.Size[1] - nameheight) / 2)
# Draw connector
if self.Connector:
self.Connector.Draw(dc)
Graphic_Element.Draw(self, dc)