def shape(self):
if self.__shape is None:
path = self.path()
pen = QPen(self.pen())
pen.setWidthF(max(pen.widthF(), 7.0))
pen.setStyle(Qt.SolidLine)
self.__shape = stroke_path(path, pen)
return self.__shape
def shape(self):
if self.__shape is None:
path = self.path()
pen = QPen(self.pen())
pen.setWidthF(max(pen.widthF(), 7.0))
pen.setStyle(Qt.SolidLine)
self.__shape = stroke_path(path, pen)
return self.__shape
class GraphicsPathObject(QGraphicsObject):
"""A QGraphicsObject subclass implementing an interface similar to
QGraphicsPathItem, and also adding a positionChanged() signal
"""
positionChanged = Signal([], ["QPointF"])
def __init__(self, parent=None, **kwargs):
QGraphicsObject.__init__(self, parent, **kwargs)
self.setFlag(QGraphicsObject.ItemSendsGeometryChanges)
self.__path = QPainterPath()
self.__brush = QBrush(Qt.NoBrush)
self.__pen = QPen()
self.__boundingRect = None
def setPath(self, path):
"""Set the items `path` (:class:`QPainterPath`).
"""
if not isinstance(path, QPainterPath):
raise TypeError("%r, 'QPainterPath' expected" % type(path))
if self.__path != path:
self.prepareGeometryChange()
# Need to store a copy of object so the shape can't be mutated
# without properly updating the geometry.
self.__path = QPainterPath(path)
self.__boundingRect = None
self.update()
def path(self):
"""Return the items path.
"""
return QPainterPath(self.__path)
def setBrush(self, brush):
"""Set the items `brush` (:class:`QBrush`)
"""
if not isinstance(brush, QBrush):
brush = QBrush(brush)
if self.__brush != brush:
self.__brush = QBrush(brush)
self.update()
def brush(self):
"""Return the items brush.
"""
return QBrush(self.__brush)
def setPen(self, pen):
"""Set the items outline `pen` (:class:`QPen`).
"""
if not isinstance(pen, QPen):
pen = QPen(pen)
if self.__pen != pen:
self.prepareGeometryChange()
self.__pen = QPen(pen)
self.__boundingRect = None
self.update()
def pen(self):
"""Return the items pen.
"""
return QPen(self.__pen)
def paint(self, painter, option, widget=None):
if self.__path.isEmpty():
return
painter.save()
painter.setPen(self.__pen)
painter.setBrush(self.__brush)
painter.drawPath(self.__path)
painter.restore()
def boundingRect(self):
if self.__boundingRect is None:
br = self.__path.controlPointRect()
pen_w = self.__pen.widthF()
self.__boundingRect = br.adjusted(-pen_w, -pen_w, pen_w, pen_w)
return self.__boundingRect
def shape(self):
return shapeFromPath(self.__path, self.__pen)
def itemChange(self, change, value):
if change == QGraphicsObject.ItemPositionHasChanged:
self.positionChanged.emit()
self.positionChanged[QPointF].emit(value)
return QGraphicsObject.itemChange(self, change, value)
