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# -*- coding: utf-8 -*-
#
# AWL simulator - FUP - Element 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.util import *
from awlsim.gui.fup.fup_base import *
from awlsim.gui.fup.fup_conn import *
class FupElem_factory(XmlFactory):
def parser_open(self, tag=None):
self.inElem = False
self.elem = None
XmlFactory.parser_open(self, tag)
def parser_beginTag(self, tag):
if self.inElem:
if tag.name == "connections":
self.parser_switchTo(FupConn.factory(elem=self.elem))
return
else:
if tag.name == "element":
self.inElem = True
elemType = tag.getAttr("type")
x = tag.getAttrInt("x")
y = tag.getAttrInt("y")
if elemType == "boolean":
from awlsim.gui.fup.fup_elembool import\
FupElem_AND, FupElem_OR, FupElem_XOR
subType = tag.getAttr("subtype")
elemClass = {
FupElem_AND.OP_SYM_NAME : FupElem_AND,
FupElem_OR.OP_SYM_NAME : FupElem_OR,
FupElem_XOR.OP_SYM_NAME : FupElem_XOR,
}.get(subType)
if elemClass:
self.elem = elemClass(
x=x, y=y, nrInputs=0)
self.elem.grid = self.grid
return
elif elemType == "operand":
from awlsim.gui.fup.fup_elemoperand import\
FupElem_LOAD, FupElem_ASSIGN
subType = tag.getAttr("subtype")
content = tag.getAttr("content")
elemClass = {
FupElem_LOAD.OP_SYM_NAME : FupElem_LOAD,
FupElem_ASSIGN.OP_SYM_NAME : FupElem_ASSIGN,
}.get(subType)
if elemClass:
self.elem = elemClass(x=x, y=y,
contentText=content)
self.elem.grid = self.grid
return
XmlFactory.parser_beginTag(self, tag)
def parser_endTag(self, tag):
if self.inElem:
if tag.name == "element":
if self.elem:
# Insert the element into the grid.
if not all(self.elem.inputs) or\
not all(self.elem.outputs):
raise self.Error("<element> connections "
"are incomplete.")
if not self.grid.placeElem(self.elem):
raise self.Error("<element> caused "
"a grid collision.")
self.inElem = False
self.elem = None
return
else:
if tag.name == "elements":
self.parser_finish()
return
XmlFactory.parser_endTag(self, tag)
class FupElem(FupBaseClass):
"""FUP/FBD element base class"""
# Element symbol
OP_SYM = ""
OP_SYM_NAME = "" # XML ABI name
factory = FupElem_factory
# Element areas
EnumGen.start
AREA_NONE = EnumGen.item
AREA_BODY = EnumGen.item
AREA_INPUT = EnumGen.item
AREA_OUTPUT = EnumGen.item
EnumGen.end
def __init__(self, x, y):
FupBaseClass.__init__(self)
self.x = x # X position as grid coordinates
self.y = y # Y position as grid coordinates
self.grid = None
self.inputs = [] # The input FupConn-ections
self.outputs = [] # The output FupConn-ections
self.expanded = False # Content view expansion active
lineWidth = 2
self._noPen = QPen(Qt.NoPen)
self._noPen.setWidth(0)
self._outlinePen = QPen(QColor("#000000"))
self._outlinePen.setWidth(lineWidth)
self._outlineSelPen = QPen(QColor("#0000FF"))
self._outlineSelPen.setWidth(lineWidth)
self._connPen = QPen(QColor("#000000"))
self._connPen.setWidth(lineWidth)
self._connOpenPen = QPen(QColor("#DF6060"))
self._connOpenPen.setWidth(lineWidth)
self._bgBrush = QBrush(QColor("#FFFFFF"))
self._bgSelBrush = QBrush(QColor("#BBBBBB"))
self._textPen = QPen(QColor("#000000"))
self._textPen.setWidth(0)
def breakConnections(self, breakInputs=True, breakOutputs=True):
"""Disconnect all connections.
"""
if breakInputs:
for conn in self.inputs:
conn.disconnect()
if breakOutputs:
for conn in self.outputs:
conn.disconnect()
def getInput(self, index):
try:
return self.inputs[index]
except IndexError:
return None
def getOutput(self, index):
try:
return self.outputs[index]
except IndexError:
return None
def getAreaViaPixCoord(self, pixelX, pixelY):
"""Get (AREA_xxx, area_index) via pixel coordinates
relative to the element.
"""
return self.AREA_BODY, 0
def getConnViaPixCoord(self, pixelX, pixelY):
"""Get a connection via pixel coordinates
relative to the element.
"""
area, idx = self.getAreaViaPixCoord(pixelX, pixelY)
if area == self.AREA_INPUT:
return self.inputs[idx]
elif area == self.AREA_OUTPUT:
return self.outputs[idx]
return None
@property
def pixCoords(self):
"""Get the (x, y) positions of this element as absolute pixel coordinates.
"""
grid = self.grid
if grid:
return self.x * grid.cellPixWidth,\
self.y * grid.cellPixHeight
return 0
def getConnRelPixCoords(self, conn):
"""Get the (x, y) pixel coordinates of a connection
relative to the element's root.
Raises IndexError, if there is no such connection.
"""
raise IndexError
def isInGridRect(self, gridX0, gridY0, gridX1, gridY1):
"""Returns true, if this element is placed under
the specified grid rectangle.
"""
x0, y0 = min(gridX0, gridX1), min(gridY0, gridY1)
x1, y1 = max(gridX0, gridX1), max(gridY0, gridY1)
return self.x >= x0 and self.y >= y0 and\
self.x + self.width - 1 <= x1 and self.y + self.height - 1 <= y1
@property
def height(self):
"""The element height, in grid coordinates.
"""
return 1
@property
def width(self):
"""The element width, in grid coordinates.
"""
return 1
@property
def _xpadding(self):
"""The horizontal pixel padding for the element body.
"""
if self.grid:
return self.grid.cellPixWidth // 6
return 0
@property
def _ypadding(self):
"""The vertical pixel padding for the element body.
"""
if self.grid:
return self.grid.cellPixHeight // 8
return 0
@property
def selected(self):
"""Returns True, if this element is selected.
"""
return self in self.grid.selectedElems
def remove(self):
"""Remove this element from the grid.
"""
if self.grid:
self.grid.removeElem(self)
def draw(self, painter):
"""Draw this element.
"""
pass
def prepareContextMenu(self, menu):
"""Add element specific context menu entries.
"""
pass
def expand(self, expand=True):
"""Expand this element to fully show it, if expand=True.
Returns True, if the expansion state changed.
"""
return False
def edit(self, parentWidget):
"""Edit the element's contents.
Returns True, if a repaint is required.
"""
return False
def __repr__(self):
return "FupElem(%d, %d)" % (self.x, self.y)
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