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

#include <qwt_plot_zoneitem.h>

类 QwtPlotZoneItem 继承关系图:

类
class	PrivateData

Public 成员函数
	QwtPlotZoneItem ()
	Constructor

virtual int	rtti () const override
	Get the runtime type information

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

Qt::Orientation	orientation () const
	Get the orientation of the zone

void	setInterval (double min, double max)
	Set the interval of the zone

void	setInterval (const QwtInterval &)
	Set the interval of the zone

QwtInterval	interval () const
	Get the interval of the zone

void	setPen (const QColor &, qreal width=0.0, Qt::PenStyle=Qt::SolidLine)
	Build and assign a pen

void	setPen (const QPen &)
	Assign a pen

const QPen &	pen () const
	Get the pen used to draw the border lines

void	setBrush (const QBrush &)
	Assign a brush

const QBrush &	brush () const
	Get the brush used to fill the zone

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

virtual QRectF	boundingRect () const override
	Get the bounding rectangle

Public 成员函数继承自 QwtPlotItem
	QwtPlotItem ()
	Default constructor

	QwtPlotItem (const QString &title)
	Constructor with title as QString

	QwtPlotItem (const QwtText &title)
	Constructor with title as QwtText

virtual	~QwtPlotItem ()
	Destructor

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

void	detach ()
	Detach the item from the plot

QwtPlot *	plot () const
	Get the plot the item is attached to

void	setTitle (const QString &title)
	Set the title using a QString

void	setTitle (const QwtText &title)
	Set the title using a QwtText

const QwtText &	title () const
	Get the title

void	setItemAttribute (ItemAttribute, bool on=true)
	Set an item attribute

bool	testItemAttribute (ItemAttribute) const
	Test an item attribute

void	setItemInterest (ItemInterest, bool on=true)
	Set an item interest

bool	testItemInterest (ItemInterest) const
	Test an item interest

void	setRenderHint (RenderHint, bool on=true)
	Set a render hint

bool	testRenderHint (RenderHint) const
	Test a render hint

void	setRenderThreadCount (uint numThreads)
	Set the number of render threads

uint	renderThreadCount () const
	Get the number of render threads

void	setLegendIconSize (const QSize &)
	Set the legend icon size

QSize	legendIconSize () const
	Get the legend icon size

double	z () const
	Get the z-value

void	setZ (double z)
	Set the z-value

void	show ()
	Show the item

void	hide ()
	Hide the item

virtual void	setVisible (bool)
	Set the visibility

bool	isVisible () const
	Check if the item is visible

void	setAxes (QwtAxisId xAxis, QwtAxisId yAxis)
	Set both axes

void	setXAxis (QwtAxisId)
	Set the x-axis

QwtAxisId	xAxis () const
	Get the x-axis

void	setYAxis (QwtAxisId)
	Set the y-axis

QwtAxisId	yAxis () const
	Get the y-axis

virtual void	itemChanged ()
	Notify the plot that the item has changed

virtual void	legendChanged ()
	Notify the item that the legend has changed

virtual void	getCanvasMarginHint (const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, double &left, double &top, double &right, double &bottom) const
	Get margin hints for the canvas

virtual void	updateScaleDiv (const QwtScaleDiv &, const QwtScaleDiv &)
	Update the item with new scale divisions

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

QRectF	scaleRect (const QwtScaleMap &, const QwtScaleMap &) const
	Calculate the scale rectangle

QRectF	paintRect (const QwtScaleMap &, const QwtScaleMap &) const
	Calculate the paint rectangle

virtual QList< QwtLegendData >	legendData () const
	Return legend data

virtual QwtGraphic	legendIcon (int index, const QSizeF &) const
	Return a legend icon

额外继承的成员函数
Public 类型继承自 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_PlotArrowMarker , Rtti_PlotBoxChart , Rtti_PlotUserItem = 1000 }
	Runtime type information 更多...

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

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

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

Protected 成员函数继承自 QwtPlotItem
QwtGraphic	defaultIcon (const QBrush &, const QSizeF &) const
	Create a default icon

详细描述

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.

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

构造及析构函数说明

◆ 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.
参见
QwtPlotItem::setItemAttribute(), QwtPlotItem::setZ()
Destructor

成员函数说明

◆ boundingRect()

QRectF QwtPlotZoneItem::boundingRect ( ) const

overridevirtual

Get the bounding rectangle

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

返回: An invalid rectangle with valid boundaries in one direction

重载 QwtPlotItem .

◆ brush()

const QBrush & QwtPlotZoneItem::brush ( ) const

Get the brush used to fill the zone

返回: Brush used to fill the zone

参见: setPen(), brush()

◆ draw()

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

overridevirtual

Draw the zone

参数

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

实现了 QwtPlotItem.

◆ interval()

QwtInterval QwtPlotZoneItem::interval ( ) const

Get the interval of the zone

返回: Zone interval

参见: setInterval(), orientation()

◆ orientation()

Qt::Orientation QwtPlotZoneItem::orientation ( ) const

Get the orientation of the zone

返回: Orientation of the zone

参见: setOrientation()

◆ pen()

const QPen & QwtPlotZoneItem::pen ( ) const

Get the pen used to draw the border lines

返回: Pen used to draw the border lines

参见: setPen(), brush()

◆ rtti()

int QwtPlotZoneItem::rtti ( ) const

overridevirtual

Get the runtime type information

返回: QwtPlotItem::Rtti_PlotZone

重载 QwtPlotItem .

◆ setBrush()

void QwtPlotZoneItem::setBrush ( const QBrush & brush )

Assign a brush

参数

[in] brush Brush

The brush is used to fill the zone.

参见: pen(), setBrush()

◆ setInterval() [1/2]

void QwtPlotZoneItem::setInterval ( const QwtInterval & interval )

Set the interval of the zone

参数

[in] interval Zone interval

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

参见: interval(), setOrientation()

◆ setInterval() [2/2]

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

Set the interval of the zone

参数

[in]	min	Minimum of the interval
[in]	max	Maximum of the interval

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

参见: interval(), setOrientation()

◆ setOrientation()

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

Set the orientation of the zone

参数

[in] orientation Orientation

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

参见: orientation(), QwtPlotItem::setAxes()

◆ setPen() [1/2]

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

Build and assign a pen

参数

[in]	color	Pen color
[in]	width	Pen width
[in]	style	Pen style

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

参见: pen(), brush()

◆ setPen() [2/2]

void QwtPlotZoneItem::setPen ( const QPen & pen )

Assign a pen

参数

[in] pen Pen

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

参见: pen(), setBrush()

该类的文档由以下文件生成:

/home/runner/work/QWT/QWT/src/plot/qwt_plot_zoneitem.h
/home/runner/work/QWT/QWT/src/plot/qwt_plot_zoneitem.cpp

类

Public 成员函数

额外继承的成员函数

详细描述

构造及析构函数说明

◆ QwtPlotZoneItem()

成员函数说明

◆ boundingRect()

◆ brush()

◆ draw()

◆ interval()

◆ orientation()

◆ pen()

◆ rtti()

◆ setBrush()

◆ setInterval() [1/2]

◆ setInterval() [2/2]

◆ setOrientation()

◆ setPen() [1/2]

◆ setPen() [2/2]