def shape(self): if self.__shape is None: path = self.curvePath() 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: pos = qunwrap(value) self.positionChanged.emit() self.positionChanged[QPointF].emit(pos) return QGraphicsObject.itemChange(self, change, value)
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): super().__init__(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 super().itemChange(change, value)