Detailed Description
The QGraphicsPolygonItem class provides a polygon item that you can add to a QGraphicsScene.
To set the item's polygon, pass a QPolygonF to QGraphicsPolygonItem's constructor, or call the setPolygon() function. The polygon() function returns the current polygon.
QGraphicsPolygonItem uses the polygon and the pen width to provide a reasonable implementation of boundingRect(), shape(), and contains(). The paint() function draws the polygon using the item's associated pen and brush, which you can set by calling the setPen() and setBrush() functions.
See also QGraphicsPathItem, QGraphicsRectItem, QGraphicsEllipseItem, QGraphicsTextItem, QGraphicsLineItem, QGraphicsPixmapItem, and The Graphics View Framework.
Member Function Documentation
QGraphicsPolygonItem::QGraphicsPolygonItem ( QGraphicsItem * parent = 0 )
Constructs a QGraphicsPolygonItem. parent is passed to QAbstractGraphicsShapeItem's constructor.
See also QGraphicsScene::addItem().
QGraphicsPolygonItem::QGraphicsPolygonItem ( const QPolygonF & polygon, QGraphicsItem * parent = 0 )
Constructs a QGraphicsPolygonItem with polygon as the default polygon. parent is passed to QAbstractGraphicsShapeItem's constructor.
See also QGraphicsScene::addItem().
QGraphicsPolygonItem::~QGraphicsPolygonItem ()
Destroys the QGraphicsPolygonItem.
Qt::FillRule QGraphicsPolygonItem::fillRule () const
Returns the fill rule of the polygon. The default fill rule is Qt::OddEvenFill.
See also setFillRule(), QPainterPath::fillRule(), and QPainter::drawPolygon().
QPolygonF QGraphicsPolygonItem::polygon () const
Returns the item's polygon, or an empty polygon if no polygon has been set.
See also setPolygon().
void QGraphicsPolygonItem::setFillRule ( Qt::FillRule rule )
Sets the fill rule of the polygon to rule. The default fill rule is Qt::OddEvenFill.
See also fillRule(), QPainterPath::fillRule(), and QPainter::drawPolygon().
void QGraphicsPolygonItem::setPolygon ( const QPolygonF & polygon )
Sets the item's polygon to be the given polygon.
See also polygon().
