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

#include <qwt_plot_zoneitem.h>

Inheritance diagram for QwtPlotZoneItem:

Classes
class	PrivateData

Public Member Functions
virtual QRectF	boundingRect () const QWT_OVERRIDE

const QBrush &	brush () const

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

QwtInterval	interval () const

Qt::Orientation	orientation () const

const QPen &	pen () const

	QwtPlotZoneItem ()
	Constructor. More...

virtual int	rtti () const QWT_OVERRIDE

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

void	setInterval (const QwtInterval &)

void	setInterval (double min, double max)

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

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

void	setPen (const QPen &)
	Assign a pen. More...

virtual	~QwtPlotZoneItem ()
	Destructor. More...

Public Member Functions inherited from QwtPlotItem
void	attach (QwtPlot *plot)
	Attach the item to a plot. More...

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

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. More...

void	hide ()
	Hide the item. More...

bool	isVisible () const

virtual void	itemChanged ()

virtual void	legendChanged ()

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

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

QSize	legendIconSize () const

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

QwtPlot *	plot () const
	Return attached plot. More...

	QwtPlotItem ()

	QwtPlotItem (const QString &title)

	QwtPlotItem (const QwtText &title)

uint	renderThreadCount () const

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

void	setAxes (QwtAxisId xAxis, QwtAxisId yAxis)

void	setItemAttribute (ItemAttribute, bool on=true)

void	setItemInterest (ItemInterest, bool on=true)

void	setLegendIconSize (const QSize &)

void	setRenderHint (RenderHint, bool on=true)

void	setRenderThreadCount (uint numThreads)

void	setTitle (const QString &title)

void	setTitle (const QwtText &title)

virtual void	setVisible (bool)

void	setXAxis (QwtAxisId)

void	setYAxis (QwtAxisId)

void	setZ (double z)
	Set the z value. More...

void	show ()
	Show the item. More...

bool	testItemAttribute (ItemAttribute) const

bool	testItemInterest (ItemInterest) const

bool	testRenderHint (RenderHint) const

const QwtText &	title () const

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

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

QwtAxisId	xAxis () const
	Return xAxis. More...

QwtAxisId	yAxis () const
	Return yAxis. More...

double	z () const

virtual	~QwtPlotItem ()
	Destroy the QwtPlotItem. More...

Private Attributes
PrivateData *	m_data

Additional Inherited Members
Public Types inherited from QwtPlotItem
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...

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...

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

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

virtual

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

virtual

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

virtual

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.

Member Data Documentation

◆ m_data

PrivateData* QwtPlotZoneItem::m_data

private

Definition at line 63 of file qwt_plot_zoneitem.h.

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

Classes

Public Member Functions

Private Attributes

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]

Member Data Documentation

◆ m_data