A plot item, which displays a zone. More...

#include <qwt_plot_zoneitem.h>

Inheritance diagram for QwtPlotZoneItem:

Public Member Functions
	QwtPlotZoneItem ()
	Constructor.

virtual	~QwtPlotZoneItem ()
	Destructor.

virtual int	rtti () const override

void	setOrientation (Qt::Orientation)
	Set the orientation of the zone.

Qt::Orientation	orientation () const

void	setInterval (double min, double max)

void	setInterval (const QwtInterval &)

QwtInterval	interval () const

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

void	setPen (const QPen &)
	Assign a pen.

const QPen &	pen () const

void	setBrush (const QBrush &)
	Assign a brush.

const QBrush &	brush () const

virtual void	draw (QPainter *, const QwtScaleMap &, const QwtScaleMap &, const QRectF &canvasRect) const override

virtual QRectF	boundingRect () const override

Public Member Functions inherited from QwtPlotItem
	QwtPlotItem ()

	QwtPlotItem (const QString &title)

	QwtPlotItem (const QwtText &title)

virtual	~QwtPlotItem ()
	Destroy the QwtPlotItem.

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

void	detach ()
	This method detaches a QwtPlotItem from any QwtPlot it has been associated with.

QwtPlot *	plot () const
	Return attached plot.

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	setItemInterest (ItemInterest, bool on=true)

bool	testItemInterest (ItemInterest) const

void	setRenderHint (RenderHint, bool on=true)

bool	testRenderHint (RenderHint) const

void	setRenderThreadCount (uint numThreads)

uint	renderThreadCount () const

void	setLegendIconSize (const QSize &)

QSize	legendIconSize () 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

void	setAxes (QwtAxisId xAxis, QwtAxisId yAxis)

void	setXAxis (QwtAxisId)

QwtAxisId	xAxis () const
	Return xAxis.

void	setYAxis (QwtAxisId)

QwtAxisId	yAxis () const
	Return yAxis.

virtual void	itemChanged ()

virtual void	legendChanged ()

virtual void	getCanvasMarginHint (const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, double &left, double &top, double &right, double &bottom) const
	Calculate a hint for the canvas margin.

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

virtual void	updateLegend (const QwtPlotItem *, const QList< QwtLegendData > &)
	Update the item to changes of the legend info.

QRectF	scaleRect (const QwtScaleMap &, const QwtScaleMap &) const
	Calculate the bounding scale rectangle of 2 maps.

QRectF	paintRect (const QwtScaleMap &, const QwtScaleMap &) const
	Calculate the bounding paint rectangle of 2 maps.

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 QwtPlotItem
enum	RttiValues { Rtti_PlotItem = 0 , Rtti_PlotGrid , Rtti_PlotScale , Rtti_PlotLegend , Rtti_PlotMarker , Rtti_PlotCurve , Rtti_PlotSpectroCurve , Rtti_PlotIntervalCurve , Rtti_PlotHistogram , Rtti_PlotSpectrogram , Rtti_PlotGraphic , Rtti_PlotTradingCurve , Rtti_PlotBarChart , Rtti_PlotMultiBarChart , Rtti_PlotShape , Rtti_PlotTextLabel , Rtti_PlotZone , Rtti_PlotVectorField , Rtti_PlotUserItem = 1000 }
	Runtime type information. More...

enum	ItemAttribute { Legend = 0x01 , AutoScale = 0x02 , Margins = 0x04 }
	Plot Item Attributes. More...

enum	ItemInterest { ScaleInterest = 0x01 , LegendInterest = 0x02 }
	Plot Item Interests. More...

enum	RenderHint { RenderAntialiased = 0x1 }
	Render hints. More...

typedef QFlags< ItemAttribute >	ItemAttributes

typedef QFlags< ItemInterest >	ItemInterests

typedef QFlags< RenderHint >	RenderHints

Protected Member Functions inherited from QwtPlotItem
QwtGraphic	defaultIcon (const QBrush &, const QSizeF &) const
	Return a default icon from a brush.

Detailed Description

A plot item, which displays a zone.

A horizontal zone highlights an interval of the y axis - a vertical zone an interval of the x axis - and is unbounded in the opposite direction. It is filled with a brush and its border lines are optionally displayed with a pen.

Note: For displaying an area that is bounded for x and y coordinates use QwtPlotShapeItem

Definition at line 33 of file qwt_plot_zoneitem.h.

Constructor & Destructor Documentation

◆ QwtPlotZoneItem()

QwtPlotZoneItem::QwtPlotZoneItem ( )

explicit

Constructor.

Initializes the zone with no pen and a semi transparent gray brush

Sets the following item attributes:

QwtPlotItem::AutoScale: false
QwtPlotItem::Legend: false

The z value is initialized by 5

See also: QwtPlotItem::setItemAttribute(), QwtPlotItem::setZ()

Definition at line 50 of file qwt_plot_zoneitem.cpp.

◆ ~QwtPlotZoneItem()

QwtPlotZoneItem::~QwtPlotZoneItem ( )

virtual

Destructor.

Definition at line 62 of file qwt_plot_zoneitem.cpp.

Member Function Documentation

◆ boundingRect()

QRectF QwtPlotZoneItem::boundingRect ( ) const

overridevirtual

The bounding rectangle is build from the interval in one direction and something invalid for the opposite direction.

Returns: An invalid rectangle with valid boundaries in one direction

Reimplemented from QwtPlotItem.

Definition at line 297 of file qwt_plot_zoneitem.cpp.

◆ brush()

const QBrush & QwtPlotZoneItem::brush ( ) const

Returns: Brush used to fill the zone

See also: setPen(), brush()

Definition at line 138 of file qwt_plot_zoneitem.cpp.

◆ draw()

void QwtPlotZoneItem::draw	(	QPainter *	painter,
		const QwtScaleMap &	xMap,
		const QwtScaleMap &	yMap,
		const QRectF &	canvasRect ) const

overridevirtual

Draw the zone

Parameters

painter	Painter
xMap	x Scale Map
yMap	y Scale Map
canvasRect	Contents rectangle of the canvas in painter coordinates

Implements QwtPlotItem.

Definition at line 223 of file qwt_plot_zoneitem.cpp.

◆ interval()

QwtInterval QwtPlotZoneItem::interval ( ) const

Returns: Zone interval

See also: setInterval(), orientation()

Definition at line 209 of file qwt_plot_zoneitem.cpp.

◆ orientation()

Qt::Orientation QwtPlotZoneItem::orientation ( ) const

Returns: Orientation of the zone

See also: setOrientation()

Definition at line 165 of file qwt_plot_zoneitem.cpp.

◆ pen()

const QPen & QwtPlotZoneItem::pen ( ) const

Returns: Pen used to draw the border lines

See also: setPen(), brush()

Definition at line 112 of file qwt_plot_zoneitem.cpp.

◆ rtti()

int QwtPlotZoneItem::rtti ( ) const

overridevirtual

Returns: QwtPlotItem::Rtti_PlotZone

Reimplemented from QwtPlotItem.

Definition at line 68 of file qwt_plot_zoneitem.cpp.

◆ setBrush()

void QwtPlotZoneItem::setBrush ( const QBrush & brush )

Assign a brush.

The brush is used to fill the zone

Parameters

brush Brush

See also: pen(), setBrush()

Definition at line 125 of file qwt_plot_zoneitem.cpp.

◆ setInterval() [1/2]

void QwtPlotZoneItem::setInterval ( const QwtInterval & interval )

Set the interval of the zone

For a horizontal zone the interval is related to the y axis, for a vertical zone it is related to the x axis.

Parameters

interval Zone interval

See also: interval(), setOrientation()

Definition at line 196 of file qwt_plot_zoneitem.cpp.

◆ setInterval() [2/2]

void QwtPlotZoneItem::setInterval	(	double	min,
		double	max )

Set the interval of the zone

For a horizontal zone the interval is related to the y axis, for a vertical zone it is related to the x axis.

Parameters

min	Minimum of the interval
max	Maximum of the interval

See also: interval(), setOrientation()

Definition at line 181 of file qwt_plot_zoneitem.cpp.

◆ setOrientation()

void QwtPlotZoneItem::setOrientation ( Qt::Orientation orientation )

Set the orientation of the zone.

A horizontal zone highlights an interval of the y axis, a vertical zone of the x axis. It is unbounded in the opposite direction.

See also: orientation(), QwtPlotItem::setAxes()

Definition at line 152 of file qwt_plot_zoneitem.cpp.

◆ setPen() [1/2]

void QwtPlotZoneItem::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

color	Pen color
width	Pen width
style	Pen style

See also: pen(), brush()

Definition at line 86 of file qwt_plot_zoneitem.cpp.

◆ setPen() [2/2]

void QwtPlotZoneItem::setPen ( const QPen & pen )

Assign a pen.

The pen is used to draw the border lines of the zone

Parameters

pen Pen

See also: pen(), setBrush()

Definition at line 99 of file qwt_plot_zoneitem.cpp.

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QwtPlotZoneItem()

◆ ~QwtPlotZoneItem()

Member Function Documentation

◆ boundingRect()

◆ brush()

◆ draw()

◆ interval()

◆ orientation()

◆ pen()

◆ rtti()

◆ setBrush()

◆ setInterval() [1/2]

◆ setInterval() [2/2]

◆ setOrientation()

◆ setPen() [1/2]

◆ setPen() [2/2]