1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
# -*- coding: utf-8 -*-
#
# AWL simulator - FUP - Connection classes
#
# Copyright 2016 Michael Buesch <m@bues.ch>
#
# This program 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 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
from __future__ import division, absolute_import, print_function, unicode_literals
from awlsim.common.compat import *
from awlsim.common.xmlfactory import *
from awlsim.gui.fup.fup_base import *
from awlsim.gui.fup.fup_wire import *
class FupConn_factory(XmlFactory):
def parser_open(self, tag=None):
self.inConn = False
XmlFactory.parser_open(self, tag)
def parser_beginTag(self, tag):
if not self.inConn and self.elem:
if tag.name == "connection":
self.inConn = True
pos = tag.getAttrInt("pos")
dirIn = tag.getAttrInt("dir_in")
dirOut = tag.getAttrInt("dir_out")
wireId = tag.getAttrInt("wire")
if pos < 0 or pos > 0xFFFF:
raise self.Error("Invalid <connection> pos.")
wire = self.elem.grid.getWireById(wireId)
try:
if dirIn and not dirOut:
self.elem.inputs.extend(
[None] * (pos + 1 - len(self.elem.inputs)))
conn = FupConnIn(elem=self.elem, pos=pos, wire=wire)
if wire:
wire.connect(conn)
self.elem.inputs[pos] = conn
return
elif dirOut and not dirIn:
self.elem.outputs.extend(
[None] * (pos + 1 - len(self.elem.outputs)))
conn = FupConnOut(elem=self.elem, pos=pos, wire=wire)
if wire:
wire.connect(conn)
self.elem.outputs[pos] = conn
return
except ValueError:
raise self.Error("Invalid <connection>")
XmlFactory.parser_beginTag(self, tag)
def parser_endTag(self, tag):
if self.inConn:
if tag.name == "connection":
self.inConn = False
return
else:
if tag.name == "connections":
self.parser_finish()
return
XmlFactory.parser_endTag(self, tag)
def composer_getTags(self):
return [
self.Tag(name="connection",
attrs={
"dir_in" : str(int(self.conn.IN)),
"dir_out" : str(int(self.conn.OUT)),
"pos" : str(self.conn.pos),
"wire" : str(-1) if self.conn.wire is None
else str(self.conn.wire.idNum),
}),
]
class FupConn(FupBaseClass):
"""FUP/FBD element connection base class"""
factory = FupConn_factory
IN = False
OUT = False
CONN_OFFS = 4
def __init__(self, elem, pos=0, wire=None):
FupBaseClass.__init__(self)
self.elem = elem # The FupElem this connection belongs to
self.pos = pos # The y position (top is 0)
self.wire = wire # The FupWire this connection is connected to (if any).
@property
def relPixCoords(self):
"""Get the (x, y) pixel coordinates of this connection
relative to the element's root.
Raises IndexError, if this does not belong to an element.
"""
elem = self.elem
if elem:
return elem.getConnRelPixCoords(self)
raise IndexError
@property
def pixCoords(self):
"""Get the absolute (x, y) pixel coordinates of this connection.
Raises IndexError, if this does not belong to an element.
"""
elem = self.elem
if elem:
xAbs, yAbs = elem.pixCoords
xRel, yRel = self.relPixCoords
return xAbs + xRel, yAbs + yRel
raise IndexError
@property
def isConnected(self):
"""Returns True, if this connection is connected to a wire.
"""
return self.wire is not None
def canConnectTo(self, other):
"""Check if this connection can connect to another connection.
"""
if self.wire is not None and other.wire is not None:
return False
return (self is not other) and\
(self.elem is not None and other.elem is not None) and\
(self.elem is not other.elem) and\
((self.IN and other.OUT) or\
(self.OUT and other.IN))
def connectTo(self, other):
"""Connect this connection to another.
Raises ValueError, if the connection cannot be done.
"""
if not self.canConnectTo(other):
raise ValueError
wire = self.wire or other.wire
if not wire:
# Create a new wire
wire = FupWire(self.elem.grid)
wire.connect(self)
wire.connect(other)
def disconnect(self):
"""Break the current connection, if any.
Returns True, if there was a connection.
"""
if self.wire:
self.wire.disconnect(self)
return True
return False
class FupConnIn(FupConn):
"""FUP/FBD element input connection"""
IN = True
class FupConnOut(FupConn):
"""FUP/FBD element output connection"""
OUT = True
|
