QwtPlotIntervalCurve 表示一系列样本，其中每个值都与一个区间相关联 ( $[y1,y2] = f(x)$ ) 更多...

#include <qwt_plot_intervalcurve.h>

类 QwtPlotIntervalCurve 继承关系图:

类
class	PrivateData

Public 类型
enum	CurveStyle { NoCurve , Tube , UserCurve = 100 }
	曲线样式更多...

enum	PaintAttribute { ClipPolygons = 0x01 , ClipSymbol = 0x02 }
	修改绘制算法的属性更多...

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 }
	运行时类型信息更多...

enum	ItemAttribute { Legend = 0x01 , AutoScale = 0x02 , Margins = 0x04 }
	绘图项属性更多...

enum	ItemInterest { ScaleInterest = 0x01 , LegendInterest = 0x02 }
	绘图项关注的事件类型更多...

enum	RenderHint { RenderAntialiased = 0x1 }
	渲染提示更多...

Public 成员函数
	QwtPlotIntervalCurve (const QString &title=QString())
	构造函数

	QwtPlotIntervalCurve (const QwtText &title)
	构造函数

virtual	~QwtPlotIntervalCurve ()
	析构函数

virtual int	rtti () const override
	获取运行时类型信息

void	setPaintAttribute (PaintAttribute, bool on=true)
	指定绘制曲线的属性

bool	testPaintAttribute (PaintAttribute) const
	测试绘制属性是否启用

void	setSamples (const QVector< QwtIntervalSample > &)
	使用样本数组初始化数据

void	setSamples (QwtSeriesData< QwtIntervalSample > *)
	分配样本序列

void	setPen (const QColor &, qreal width=0.0, Qt::PenStyle=Qt::SolidLine)
	构建并分配画笔

void	setPen (const QPen &)
	分配画笔

const QPen &	pen () const
	获取用于绘制线条的画笔

void	setBrush (const QBrush &)
	分配画刷

const QBrush &	brush () const
	获取用于在 Tube 样式()中填充区域的画刷

void	setStyle (CurveStyle style)
	设置曲线的绘制样式

CurveStyle	style () const
	获取曲线的绘制样式

void	setSymbol (const QwtIntervalSymbol *)
	分配符号

const QwtIntervalSymbol *	symbol () const
	获取当前符号

virtual void	drawSeries (QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const override
	绘制样本的子集

virtual QRectF	boundingRect () const override
	获取所有样本的边界矩形

virtual QwtGraphic	legendIcon (int index, const QSizeF &) const override
	获取图例图标

Public 成员函数继承自 QwtPlotSeriesItem
	QwtPlotSeriesItem (const QString &title=QString())
	构造函数

	QwtPlotSeriesItem (const QwtText &title)
	构造函数

virtual	~QwtPlotSeriesItem ()
	析构函数

void	setOrientation (Qt::Orientation)
	设置绘图项的方向

Qt::Orientation	orientation () const
	获取绘图项的方向

virtual void	draw (QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect) const override
	绘制完整系列

virtual void	updateScaleDiv (const QwtScaleDiv &, const QwtScaleDiv &) override
	更新刻度划分

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

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	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

Public 成员函数继承自 QwtSeriesStore< QwtIntervalSample >
void	setData (QwtSeriesData< QwtIntervalSample > *series)

QwtSeriesData< QwtIntervalSample > *	data ()

const QwtSeriesData< QwtIntervalSample > *	data () const

QwtIntervalSample	sample (size_t index) const

virtual size_t	dataSize () const override

virtual QRectF	dataRect () const override

virtual void	setRectOfInterest (const QRectF &rect) override
	Set a the "rectangle of interest" for the stored series

QwtSeriesData< QwtIntervalSample > *	swapData (QwtSeriesData< QwtIntervalSample > *series)

Protected 成员函数
void	init ()
	Initialize internal members

virtual void	drawTube (QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const
	Draw a tube

virtual void	drawSymbols (QPainter *, const QwtIntervalSymbol &, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const
	Draw symbols for a subset of the samples

Protected 成员函数继承自 QwtPlotSeriesItem
virtual void	dataChanged () override
	dataChanged() indicates, that the series has been changed.

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

详细描述

QwtPlotIntervalCurve 表示一系列样本，其中每个值都与一个区间相关联 ( $[y1,y2] = f(x)$ )

成员枚举类型说明

◆ CurveStyle

enum QwtPlotIntervalCurve::CurveStyle

曲线样式

枚举值
NoCurve	不绘制曲线。注意：这不会影响符号。
Tube	从区间的上限和下限构建 2 条曲线，并用 pen() 绘制它们。曲线之间的区域用 brush() 填充。
UserCurve	样式 >= QwtPlotIntervalCurve::UserCurve 保留给派生类使用，这些派生类用额外的应用特定曲线类型重载 drawSeries()。

◆ PaintAttribute

enum QwtPlotIntervalCurve::PaintAttribute

修改绘制算法的属性

枚举值
ClipPolygons	在绘制多边形之前对其进行裁剪。在点远在可见区域之外的情况下（例如深度缩放时），这可能会显著提高绘制性能。
ClipSymbol	Check if a symbol is on the plot canvas before painting it

构造及析构函数说明

◆ QwtPlotIntervalCurve() [1/2]

QwtPlotIntervalCurve::QwtPlotIntervalCurve ( const QString & title = QString() )

explicit

构造函数

◆ QwtPlotIntervalCurve() [2/2]

QwtPlotIntervalCurve::QwtPlotIntervalCurve ( const QwtText & title )

explicit

构造函数

◆ ~QwtPlotIntervalCurve()

QwtPlotIntervalCurve::~QwtPlotIntervalCurve ( )

virtual

析构函数

成员函数说明

◆ boundingRect()

QRectF QwtPlotIntervalCurve::boundingRect ( ) const

overridevirtual

获取所有样本的边界矩形

重载 QwtPlotSeriesItem .

◆ brush()

const QBrush & QwtPlotIntervalCurve::brush ( ) const

获取用于在 Tube 样式()中填充区域的画刷

◆ drawSeries()

void QwtPlotIntervalCurve::drawSeries	(	QPainter *	painter,
		const QwtScaleMap &	xMap,
		const QwtScaleMap &	yMap,
		const QRectF &	canvasRect,
		int	from,
		int	to
	)		const

overridevirtual

绘制样本的子集

实现了 QwtPlotSeriesItem.

◆ drawSymbols()

void QwtPlotIntervalCurve::drawSymbols	(	QPainter *	painter,
		const QwtIntervalSymbol &	symbol,
		const QwtScaleMap &	xMap,
		const QwtScaleMap &	yMap,
		const QRectF &	canvasRect,
		int	from,
		int	to
	)		const

protectedvirtual

Draw symbols for a subset of the samples

参数

painter	Painter
symbol	Interval symbol
xMap	x map
yMap	y map
canvasRect	Contents rectangle of the canvas
from	Index of the first sample to be painted
to	Index of the last sample to be painted

参见: setSymbol(), drawSeries(), drawTube()

◆ drawTube()

void QwtPlotIntervalCurve::drawTube	(	QPainter *	painter,
		const QwtScaleMap &	xMap,
		const QwtScaleMap &	yMap,
		const QRectF &	canvasRect,
		int	from,
		int	to
	)		const

protectedvirtual

Draw a tube

Builds 2 curves from the upper and lower limits of the intervals and draws them with the pen(). The area between the curves is filled with the brush().

参数

painter	Painter
xMap	Maps x-values into pixel coordinates.
yMap	Maps y-values into pixel coordinates.
canvasRect	Contents rectangle of the canvas
from	Index of the first sample to be painted
to	Index of the last sample to be painted. If to < 0 the series will be painted to its last sample.

参见: drawSeries(), drawSymbols()

◆ init()

void QwtPlotIntervalCurve::init ( )

protected

Initialize internal members

◆ legendIcon()

QwtGraphic QwtPlotIntervalCurve::legendIcon	(	int	index,
		const QSizeF &	size
	)		const

overridevirtual

获取图例图标

重载 QwtPlotItem .

◆ pen()

const QPen & QwtPlotIntervalCurve::pen ( ) const

获取用于绘制线条的画笔

◆ rtti()

int QwtPlotIntervalCurve::rtti ( ) const

overridevirtual

获取运行时类型信息

重载 QwtPlotItem .

◆ setBrush()

void QwtPlotIntervalCurve::setBrush ( const QBrush & brush )

分配画刷

◆ setPaintAttribute()

void QwtPlotIntervalCurve::setPaintAttribute	(	PaintAttribute	attribute,
		bool	on = `true`
	)

指定绘制曲线的属性

◆ setPen() [1/2]

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

构建并分配画笔

◆ setPen() [2/2]

void QwtPlotIntervalCurve::setPen ( const QPen & pen )

分配画笔

◆ setSamples() [1/2]

void QwtPlotIntervalCurve::setSamples ( const QVector< QwtIntervalSample > & samples )

使用样本数组初始化数据

◆ setSamples() [2/2]

void QwtPlotIntervalCurve::setSamples ( QwtSeriesData< QwtIntervalSample > * data )

分配样本序列

◆ setStyle()

void QwtPlotIntervalCurve::setStyle ( CurveStyle style )

设置曲线的绘制样式

◆ setSymbol()

void QwtPlotIntervalCurve::setSymbol ( const QwtIntervalSymbol * symbol )

分配符号

◆ style()

QwtPlotIntervalCurve::CurveStyle QwtPlotIntervalCurve::style ( ) const

获取曲线的绘制样式

◆ symbol()

const QwtIntervalSymbol * QwtPlotIntervalCurve::symbol ( ) const

获取当前符号

◆ testPaintAttribute()

bool QwtPlotIntervalCurve::testPaintAttribute ( PaintAttribute attribute ) const

测试绘制属性是否启用

该类的文档由以下文件生成:

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

类

Public 类型

Public 成员函数

Protected 成员函数

详细描述

成员枚举类型说明

◆ CurveStyle

◆ PaintAttribute

构造及析构函数说明

◆ QwtPlotIntervalCurve() [1/2]

◆ QwtPlotIntervalCurve() [2/2]

◆ ~QwtPlotIntervalCurve()

成员函数说明

◆ boundingRect()

◆ brush()

◆ drawSeries()

◆ drawSymbols()

◆ drawTube()

◆ init()

◆ legendIcon()

◆ pen()

◆ rtti()

◆ setBrush()

◆ setPaintAttribute()

◆ setPen() [1/2]

◆ setPen() [2/2]

◆ setSamples() [1/2]

◆ setSamples() [2/2]

◆ setStyle()

◆ setSymbol()

◆ style()

◆ symbol()

◆ testPaintAttribute()