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QGraphicsLineItem Class Reference
[QtGui module]

The QGraphicsLineItem class provides a line item that you can add to a QGraphicsScene. More...

#include <QGraphicsLineItem>

Inherits QGraphicsItem.

This class was introduced in Qt 4.2.

Public Functions

Additional Inherited Members


Detailed Description

The QGraphicsLineItem class provides a line item that you can add to a QGraphicsScene.

To set the item's line, pass a QLineF to QGraphicsLineItem's constructor, or call setLine(). line() returns the current line.

QGraphicsLineItem uses the line and the pen width to provide a reasonable implementation of boundingRect(), shape(), and contains(). The paint() function draws the line using the item's associated pen, which you can set by calling setPen().

See also QGraphicsPathItem, QGraphicsRectItem, QGraphicsEllipseItem, QGraphicsTextItem, QGraphicsPolygonItem, QGraphicsPixmapItem, and The Graphics View Framework.


Member Function Documentation

QGraphicsLineItem::QGraphicsLineItem ( QGraphicsItem * parent = 0, QGraphicsScene * scene = 0 )

Constructs a QGraphicsLineItem. parent and scene are passed to QGraphicsItem's constructor.

QGraphicsLineItem::QGraphicsLineItem ( const QLineF & line, QGraphicsItem * parent = 0, QGraphicsScene * scene = 0 )

Constructs a QGraphicsLineItem, using line as the default line. parent and scene are passed to QGraphicsItem's constructor.

QGraphicsLineItem::QGraphicsLineItem ( qreal x1, qreal y1, qreal x2, qreal y2, QGraphicsItem * parent = 0, QGraphicsScene * scene = 0 )

QGraphicsLineItem::~QGraphicsLineItem ()

Destroys the QGraphicsLineItem.

QLineF QGraphicsLineItem::line () const

Returns the item's line, or QLineF() if no line has been set.

See also setLine().

QPen QGraphicsLineItem::pen () const

Returns the item's pen, or QPen() if no pen has been set.

See also setPen().

void QGraphicsLineItem::setLine ( const QLineF & line )

Sets the item's line to line.

See also line().

void QGraphicsLineItem::setLine ( qreal x1, qreal y1, qreal x2, qreal y2 )

This is an overloaded member function, provided for convenience.

void QGraphicsLineItem::setPen ( const QPen & pen )

Sets the item's pen to pen. If no pen is set, the line will be painted using a black solid 0-width line.

See also pen().


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Qt 4.2.0-snapshot-20060701