A drawing primitive for displaying an interval like an error bar. More...

#include <qwt_interval_symbol.h>

Public Types
enum	Style { NoSymbol = -1, Bar, Box, UserSymbol = 1000 }
	Symbol style. More...

Public Member Functions
	QwtIntervalSymbol (Style=NoSymbol)

	QwtIntervalSymbol (const QwtIntervalSymbol &)
	Copy constructor.

virtual	~QwtIntervalSymbol ()
	Destructor.

QwtIntervalSymbol &	operator= (const QwtIntervalSymbol &)
	Assignment operator.

bool	operator== (const QwtIntervalSymbol &) const
	Compare two symbols.

bool	operator!= (const QwtIntervalSymbol &) const
	Compare two symbols.

void	setWidth (int)

int	width () const

void	setBrush (const QBrush &b)
	Assign a brush. More...

const QBrush &	brush () const

void	setPen (const QColor &, qreal width=0.0, Qt::PenStyle=Qt::SolidLine)

void	setPen (const QPen &)

const QPen &	pen () const

void	setStyle (Style)

Style	style () const

virtual void	draw (QPainter *, Qt::Orientation, const QPointF &from, const QPointF &to) const

Detailed Description

A drawing primitive for displaying an interval like an error bar.

See also: QwtPlotIntervalCurve

Member Enumeration Documentation

enum QwtIntervalSymbol::Style

Symbol style.

Enumerator
NoSymbol	No Style. The symbol cannot be drawn.
Bar	The symbol displays a line with caps at the beginning/end. The size of the caps depends on the symbol width().
Box	The symbol displays a plain rectangle using pen() and brush(). The size of the rectangle depends on the translated interval and the width(),
UserSymbol	Styles >= UserSymbol are reserved for derived classes of QwtIntervalSymbol that overload draw() with additional application specific symbol types.

Constructor & Destructor Documentation

QwtIntervalSymbol::QwtIntervalSymbol ( Style style = NoSymbol )

Constructor

Parameters

style Style of the symbol

See also: setStyle(), style(), Style

Member Function Documentation

const QBrush & QwtIntervalSymbol::brush ( ) const

Returns: Brush

See also: setBrush()

void QwtIntervalSymbol::draw	(	QPainter *	painter,
		Qt::Orientation	orientation,
		const QPointF &	from,
		const QPointF &	to
	)		const

virtual

Draw a symbol depending on its style

Parameters

painter	Painter
orientation	Orientation
from	Start point of the interval in target device coordinates
to	End point of the interval in target device coordinates

See also: setStyle()

const QPen & QwtIntervalSymbol::pen ( ) const

Returns: Pen

See also: setPen(), brush()

void QwtIntervalSymbol::setBrush ( const QBrush & brush )

Assign a brush.

The brush is used for the Box style.

Parameters

brush Brush

See also: brush()

void QwtIntervalSymbol::setPen	(	const QColor &	color,
		qreal	width = `0.0`,
		Qt::PenStyle	style = `Qt::SolidLine`
	)

Build and assign a pen

In Qt5 the default pen width is 1.0 ( 0.0 in Qt4 ) what makes it non cosmetic ( see QPen::isCosmetic() ). This method has been introduced to hide this incompatibility.

Parameters