LineGraphicsItem Class Reference

QGraphicsLineItem with an application-defined type integer and appearance helpers. More...

#include <linegraphicsitem.h>

Inheritance diagram for LineGraphicsItem:

Collaboration diagram for LineGraphicsItem:

Public Member Functions
	LineGraphicsItem (int type, QGraphicsItem *parent=nullptr)
	Construct with a type integer and optional parent item.
	LineGraphicsItem (const Line &line, int type, QGraphicsItem *parent=nullptr)
	Construct from a Line geometry object, with a type integer and optional parent.
virtual int	type () const override
	Return the application-defined type integer.
void	setWidth (double width)
	Set the pen width.
void	setColor (const QColor &color)
	Set the pen color.
virtual QRectF	boundingRect () const override
	Return the bounding rectangle (expanded to account for pen width).
virtual QPainterPath	shape () const override
	Return the shape used for hit testing.
void	setLength (double length)
	Set the length of the line, extending from its current start point.

Detailed Description

QGraphicsLineItem with an application-defined type integer and appearance helpers.

LineGraphicsItem stores a type integer (returned by type()) that allows qgraphicsitem_cast<> and scene item-type filtering to work with custom types. It also provides helpers for changing pen width, color, and line length.

Definition at line 15 of file linegraphicsitem.h.

Constructor & Destructor Documentation

LineGraphicsItem() [1/2]

LineGraphicsItem::LineGraphicsItem	(	int	type,
		QGraphicsItem *	parent = nullptr
	)

Construct with a type integer and optional parent item.

Parameters

type	Application-defined graphics item type
parent	Optional parent QGraphicsItem

LineGraphicsItem() [2/2]

LineGraphicsItem::LineGraphicsItem	(	const Line &	line,
		int	type,
		QGraphicsItem *	parent = nullptr
	)

Construct from a Line geometry object, with a type integer and optional parent.

Parameters

line	Line geometry to display
type	Application-defined graphics item type
parent	Optional parent QGraphicsItem

Member Function Documentation

boundingRect()

virtual QRectF LineGraphicsItem::boundingRect ( ) const

overridevirtual

Return the bounding rectangle (expanded to account for pen width).

Returns

Bounding rect in item coordinates

setColor()

void LineGraphicsItem::setColor

(

const QColor &

color

)

Set the pen color.

Parameters

color

Color to apply to the pen

setLength()

void LineGraphicsItem::setLength

(

double

length

)

Set the length of the line, extending from its current start point.

Parameters

length

New length in scene units

setWidth()

void LineGraphicsItem::setWidth

(

double

width

)

Set the pen width.

Parameters

width

Pen width in scene units

shape()

virtual QPainterPath LineGraphicsItem::shape ( ) const

overridevirtual

Return the shape used for hit testing.

Returns

Painter path representing the clickable area

type()

virtual int LineGraphicsItem::type ( ) const

inlineoverridevirtual

Return the application-defined type integer.

Returns

Item type value

Definition at line 37 of file linegraphicsitem.h.

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The documentation for this class was generated from the following file:

• include/Kanoop/gui/graphics/linegraphicsitem.h