QGraphicsEllipseItem

QGraphicsEllipseItem is a class in the Qt Graphics View Framework that represents an ellipse shape. It inherits from QAbstractGraphicsShapeItem, which provides basic functionality for graphical shapes. QGraphicsEllipseItem is used to draw ellipses and arcs within a QGraphicsScene.

To create a QGraphicsEllipseItem, you need to specify its bounding rectangle. This rectangle defines the ellipse's position and size. The ellipse is drawn within this bounding rectangle, with its major and minor axes aligned with the rectangle's axes. You can also specify the starting angle and span angle to draw only a portion of the ellipse, creating an arc.

QGraphicsEllipseItem supports various visual properties, including pen for outline and brush for filling. These can be set using the setPen() and setBrush() methods, respectively. The item can also be transformed, such as rotated or scaled, using methods inherited from QGraphicsItem.

QGraphicsEllipseItem is part of the QGraphicsView framework, which allows for the creation of highly customizable and interactive graphical scenes. It can be added to a QGraphicsScene and then displayed using a QGraphicsView. Its simplicity makes it a convenient choice for drawing circular or elliptical elements in graphical user interfaces.