def __init__(self, parent=None):
super(GraphicsView, self).__init__(parent)
self.setDragMode(QGraphicsView.RubberBandDrag)
self.setSceneRect(QtCore.QRectF(-2000, -2000, 4000, 4000))
self.setRenderHint(QPainter.Antialiasing)
self.setRenderHint(QPainter.TextAntialiasing)
self.setAcceptDrops(True)
def find_itemAt(self, pos):
items = self.items(
QtCore.QRectF(pos - QtCore.QPointF(1, 1), QtCore.QSizeF(3, 3)))
for item in items:
if isinstance(item,
QGraphicsItem) and not isinstance(item, Connection):
return item
return None
def itemAt(self, pos):
items = self.scene.items(
QtCore.QRectF(pos - QtCore.QPointF(DB, DB),
QtCore.QSizeF(2 * DB, 2 * DB)))
for item in items:
if isinstance(item, QGraphicsItem):
return item
return None