class ComponentQGraphicsItem(QGraphicsObject): #(QtSvg.QGraphicsSvgItem):
def __init__(self, svgfile, component, nodes):
#QGraphicsSvgItem.__init__(self,svgfile)
QGraphicsObject.__init__(self)
self.__svggraphic = QGraphicsSvgItem(svgfile)
rect = self.__svggraphic.boundingRect()
self.__nodeGraphics = []
self.__component = weakref.ref(component)
# this signals the itemChange() method when this item is moved
# used for refreshing the spaces between components
self.setFlags(QGraphicsItem.ItemSendsGeometryChanges)
self.nodedx = [] # stores the node square offsets
item = QGraphicsTextItem(component.name, self)
rect = item.boundingRect()
item.setPos(-0.5 * rect.width(), 40 - 0.5 * rect.height())
self.setAcceptsHoverEvents(True)
for n in nodes:
self.nodedx.append([n[0], n[1]])
node = n[2].getQGraphicsItem(n[0], n[1], nsize, self)
node.setPen(QPen(Qt.black))
node.refresh()
self.__nodeGraphics.append(node)
self.refresh()
self.installEventFilter(self)
self.setHandlesChildEvents(True)
def boundingRect(self):
return self.__svggraphic.boundingRect()
def paint(self, arg1, arg2, arg3):
self.__svggraphic.rotate(45)
self.__svggraphic.paint(arg1, arg2, arg3)
@property
def component(self):
return self.__component()
def refresh(self):
for n in self.__nodeGraphics:
n.refresh()
def itemChange(self, change, value):
# if the item is moved then update any spaces attached to it
if change == QGraphicsItem.ItemPositionHasChanged:
nodes = self.component.nodes
for n in nodes:
conn = n.amIConnected(self.component)
if conn[0] and isinstance(conn[1], pykat.components.space):
conn[1].getQGraphicsItem().refresh()
return QGraphicsSvgItem.itemChange(self, change, value)
