A class for drawing markers. More...

#include <qwt_polar_marker.h>

Inheritance diagram for QwtPolarMarker:

Public Member Functions
	QwtPolarMarker ()
	Sets alignment to Qt::AlignCenter, and style to NoLine.

virtual	~QwtPolarMarker ()
	Destructor.

virtual int	rtti () const override

void	setPosition (const QwtPointPolar &)
	Change the position of the marker.

QwtPointPolar	position () const

void	setSymbol (const QwtSymbol *s)
	Assign a symbol.

const QwtSymbol *	symbol () const

void	setLabel (const QwtText &)
	Set the label.

QwtText	label () const

void	setLabelAlignment (Qt::Alignment)
	Set the alignment of the label.

Qt::Alignment	labelAlignment () const

virtual void	draw (QPainter *painter, const QwtScaleMap &azimuthMap, const QwtScaleMap &radialMap, const QPointF &pole, double radius, const QRectF &canvasRect) const override

virtual QwtInterval	boundingInterval (int scaleId) const override

Public Member Functions inherited from QwtPolarItem
	QwtPolarItem (const QwtText &title=QwtText())

virtual	~QwtPolarItem ()
	Destroy the QwtPolarItem.

void	attach (QwtPolarPlot *plot)
	Attach the item to a plot.

void	detach ()
	This method detaches a QwtPolarItem from the QwtPolarPlot it has been associated with.

QwtPolarPlot *	plot () const

void	setTitle (const QString &title)

void	setTitle (const QwtText &title)

const QwtText &	title () const

void	setItemAttribute (ItemAttribute, bool on=true)

bool	testItemAttribute (ItemAttribute) const

void	setRenderHint (RenderHint, bool on=true)

bool	testRenderHint (RenderHint) const

void	setRenderThreadCount (uint numThreads)

uint	renderThreadCount () const

double	z () const

void	setZ (double z)
	Set the z value.

void	show ()
	Show the item.

void	hide ()
	Hide the item.

virtual void	setVisible (bool)

bool	isVisible () const

virtual void	itemChanged ()

virtual void	legendChanged ()

virtual void	updateScaleDiv (const QwtScaleDiv &, const QwtScaleDiv &, const QwtInterval &)
	Update the item to changes of the axes scale division.

virtual int	marginHint () const

void	setLegendIconSize (const QSize &)

QSize	legendIconSize () const

virtual QList< QwtLegendData >	legendData () const
	Return all information, that is needed to represent the item on the legend.

virtual QwtGraphic	legendIcon (int index, const QSizeF &) const

Additional Inherited Members
Public Types inherited from QwtPolarItem
enum	RttiValues { Rtti_PolarItem = 0 , Rtti_PolarGrid , Rtti_PolarMarker , Rtti_PolarCurve , Rtti_PolarSpectrogram , Rtti_PolarUserItem = 1000 }
	Runtime type information. More...

enum	ItemAttribute { Legend = 0x01 , AutoScale = 0x02 }
	Plot Item Attributes. More...

enum	RenderHint { RenderAntialiased = 0x01 }
	Render hints. More...

typedef QFlags< ItemAttribute >	ItemAttributes

typedef QFlags< RenderHint >	RenderHints

Detailed Description

A class for drawing markers.

A marker can be a a symbol, a label or a combination of them, which can be drawn around a center point inside a bounding rectangle.

The setSymbol() member assigns a symbol to the marker. The symbol is drawn at the specified point.

With setLabel(), a label can be assigned to the marker. The setLabelAlignment() member specifies where the label is drawn. All the Align*-constants in Qt::AlignmentFlags (see Qt documentation) are valid. The alignment refers to the center point of the marker, which means, for example, that the label would be painted left above the center point if the alignment was set to AlignLeft|AlignTop.

Definition at line 36 of file qwt_polar_marker.h.

Constructor & Destructor Documentation

◆ QwtPolarMarker()

QwtPolarMarker::QwtPolarMarker ( )

explicit

Sets alignment to Qt::AlignCenter, and style to NoLine.

Definition at line 42 of file qwt_polar_marker.cpp.

◆ ~QwtPolarMarker()

QwtPolarMarker::~QwtPolarMarker ( )

virtual

Destructor.

Definition at line 52 of file qwt_polar_marker.cpp.

Member Function Documentation

◆ boundingInterval()

QwtInterval QwtPolarMarker::boundingInterval ( int scaleId ) const

overridevirtual

Interval, that is necessary to display the item This interval can be useful for operations like clipping or autoscaling

Parameters

scaleId Scale index

Returns: bounding interval ( == position )

See also: position()

Reimplemented from QwtPolarItem.

Definition at line 228 of file qwt_polar_marker.cpp.

◆ draw()

void QwtPolarMarker::draw	(	QPainter *	painter,
		const QwtScaleMap &	azimuthMap,
		const QwtScaleMap &	radialMap,
		const QPointF &	pole,
		double	radius,
		const QRectF &	canvasRect ) const

overridevirtual

Draw the marker

Parameters

painter	Painter
azimuthMap	Maps azimuth values to values related to 0.0, M_2PI
radialMap	Maps radius values into painter coordinates.
pole	Position of the pole in painter coordinates
radius	Radius of the complete plot area in painter coordinates
canvasRect	Contents rect of the canvas in painter coordinates

Implements QwtPolarItem.

Definition at line 89 of file qwt_polar_marker.cpp.

◆ label()

QwtText QwtPolarMarker::label ( ) const

Returns: the label

See also: setLabel()

Definition at line 185 of file qwt_polar_marker.cpp.

◆ labelAlignment()

Qt::Alignment QwtPolarMarker::labelAlignment ( ) const

Returns: the label alignment

See also: setLabelAlignment()

Definition at line 214 of file qwt_polar_marker.cpp.

◆ position()

QwtPointPolar QwtPolarMarker::position ( ) const

Returns: Position of the marker

Definition at line 64 of file qwt_polar_marker.cpp.

◆ rtti()

int QwtPolarMarker::rtti ( ) const

overridevirtual

Returns: QwtPolarItem::Rtti_PlotMarker

Reimplemented from QwtPolarItem.

Definition at line 58 of file qwt_polar_marker.cpp.

◆ setLabel()

void QwtPolarMarker::setLabel ( const QwtText & label )

Set the label.

Parameters

label label text

See also: label()

Definition at line 172 of file qwt_polar_marker.cpp.

◆ setLabelAlignment()

void QwtPolarMarker::setLabelAlignment ( Qt::Alignment align )

Set the alignment of the label.

The alignment determines where the label is drawn relative to the marker's position.

Parameters

align Alignment. A combination of AlignTop, AlignBottom, AlignLeft, AlignRight, AlignCenter, AlgnHCenter, AlignVCenter.

See also: labelAlignment()

Definition at line 201 of file qwt_polar_marker.cpp.

◆ setPosition()

void QwtPolarMarker::setPosition ( const QwtPointPolar & pos )

Change the position of the marker.

Definition at line 70 of file qwt_polar_marker.cpp.

◆ setSymbol()

void QwtPolarMarker::setSymbol ( const QwtSymbol * symbol )

Assign a symbol.

Parameters

symbol New symbol

See also: symbol()

Definition at line 148 of file qwt_polar_marker.cpp.

◆ symbol()

const QwtSymbol * QwtPolarMarker::symbol ( ) const

Returns: the symbol

See also: setSymbol(), QwtSymbol

Definition at line 162 of file qwt_polar_marker.cpp.

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QwtPolarMarker()

◆ ~QwtPolarMarker()

Member Function Documentation

◆ boundingInterval()

◆ draw()

◆ label()

◆ labelAlignment()

◆ position()

◆ rtti()

◆ setLabel()

◆ setLabelAlignment()

◆ setPosition()

◆ setSymbol()

◆ symbol()