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# QGraphicsLineItem Class Reference
[QtGui module]

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

Inherits QGraphicsItem.

### Methods

- __init__ (self, QGraphicsItem parent = None, QGraphicsScene scene = None)
- __init__ (self, QLineF line, QGraphicsItem parent = None, QGraphicsScene scene = None)
- __init__ (self, float x1, float y1, float x2, float y2, QGraphicsItem parent = None, QGraphicsScene scene = None)
- QRectF boundingRect (self)
- bool contains (self, QPointF point)
- bool isObscuredBy (self, QGraphicsItem item)
- QLineF line (self)
- QPainterPath opaqueArea (self)
- paint (self, QPainter painter, QStyleOptionGraphicsItem option, QWidget widget = None)
- QPen pen (self)
- setLine (self, QLineF line)
- setLine (self, float x1, float y1, float x2, float y2)
- setPen (self, QPen pen)
- QPainterPath shape (self)
- int type (self)

## 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 the setLine() function. The line() function returns the current line. By default the line is black with a width of 0, but you can change this by calling setPen().

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.

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

## Method Documentation

### QGraphicsLineItem.__init__ (self, QGraphicsItem parent = None, QGraphicsScene scene = None)

The parent argument, if not None, causes self to be owned by Qt instead of PyQt.

The scene argument, if not None, causes self to be owned by Qt instead of PyQt.

Constructs a QGraphicsLineItem. parent is passed to QGraphicsItem's constructor.

See also QGraphicsScene.addItem().

### QGraphicsLineItem.__init__ (self, QLineF line, QGraphicsItem parent = None, QGraphicsScene scene = None)

The parent argument, if not None, causes self to be owned by Qt instead of PyQt.

The scene argument, if not None, causes self to be owned by Qt instead of PyQt.

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

See also QGraphicsScene.addItem().

### QGraphicsLineItem.__init__ (self, float x1, float y1, float x2, float y2, QGraphicsItem parent = None, QGraphicsScene scene = None)

The parent argument, if not None, causes self to be owned by Qt instead of PyQt.

The scene argument, if not None, causes self to be owned by Qt instead of PyQt.

Constructs a QGraphicsLineItem, using the line between (x1, y1) and (x2, y2) as the default line. parent is passed to QGraphicsItem's constructor.

See also QGraphicsScene.addItem().

### QRectF QGraphicsLineItem.boundingRect (self)

### bool QGraphicsLineItem.contains (self, QPointF point)

### bool QGraphicsLineItem.isObscuredBy (self, QGraphicsItem item)

### QLineF QGraphicsLineItem.line (self)

Returns the item's line, or a null line if no line has been set.

See also setLine().

### QPainterPath QGraphicsLineItem.opaqueArea (self)

### QGraphicsLineItem.paint (self, QPainter painter, QStyleOptionGraphicsItem option, QWidget widget = None)

### QPen QGraphicsLineItem.pen (self)

Returns the item's pen, or a black solid 0-width pen if no pen has been set.

See also setPen().

### QGraphicsLineItem.setLine (self, QLineF line)

Sets the item's line to be the given line.

See also line().

### QGraphicsLineItem.setLine (self, float x1, float y1, float x2, float y2)

This is an overloaded member function, provided for convenience.

Sets the item's line to be the line between (x1, y1) and (x2, y2).

This is the same as calling `setLine(QLineF(x1, y1, x2, y2))`.

### QGraphicsLineItem.setPen (self, 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 pen.

See also pen().

### QPainterPath QGraphicsLineItem.shape (self)

### int QGraphicsLineItem.type (self)