在极坐标图上绘制刻度和网格线的绘图项更多...

#include <qwt_polar_grid.h>

类 QwtPolarGrid 继承关系图:

类
class	PrivateData

Public 类型
enum	DisplayFlag { SmartOriginLabel = 1 , HideMaxRadiusLabel = 2 , ClipAxisBackground = 4 , SmartScaleDraw = 8 , ClipGridLines = 16 }
	绘制刻度和网格线时避免冲突的显示标志更多...

enum	GridAttribute { AutoScaling = 0x01 }
	网格属性更多...

Public 类型继承自 QwtPolarItem
enum	RttiValues { Rtti_PolarItem = 0 , Rtti_PolarGrid , Rtti_PolarMarker , Rtti_PolarCurve , Rtti_PolarSpectrogram , Rtti_PolarUserItem = 1000 }

enum	ItemAttribute { Legend = 0x01 , AutoScale = 0x02 }

enum	RenderHint { RenderAntialiased = 0x01 }

Public 成员函数
	QwtPolarGrid ()
	Constructor

virtual	~QwtPolarGrid ()
	Destructor

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

void	setDisplayFlag (DisplayFlag, bool on=true)
	Set a display flag

bool	testDisplayFlag (DisplayFlag) const
	Test a display flag

void	setGridAttribute (GridAttribute, bool on=true)
	Set a grid attribute

bool	testGridAttribute (GridAttribute) const
	Test a grid attribute

void	showGrid (int scaleId, bool show=true)
	Show/hide the grid for a scale

bool	isGridVisible (int scaleId) const
	Check if the grid is visible for a scale

void	showMinorGrid (int scaleId, bool show=true)
	Show/hide the minor grid for a scale

bool	isMinorGridVisible (int scaleId) const
	Check if the minor grid is visible for a scale

void	showAxis (int axisId, bool show=true)
	Show/hide an axis

bool	isAxisVisible (int axisId) const
	Check if an axis is visible

void	setPen (const QPen &p)
	Set the pen

void	setFont (const QFont &)
	Set the font

void	setMajorGridPen (const QPen &p)
	Set the major grid pen

void	setMajorGridPen (int scaleId, const QPen &p)
	Set the major grid pen for a scale

QPen	majorGridPen (int scaleId) const
	Get the major grid pen for a scale

void	setMinorGridPen (const QPen &p)
	Set the minor grid pen

void	setMinorGridPen (int scaleId, const QPen &p)
	Set the minor grid pen for a scale

QPen	minorGridPen (int scaleId) const
	Get the minor grid pen for a scale

void	setAxisPen (int axisId, const QPen &p)
	Set the axis pen

QPen	axisPen (int axisId) const
	Get the axis pen

void	setAxisFont (int axisId, const QFont &p)
	Set the axis font

QFont	axisFont (int axisId) const
	Get the axis font

void	setScaleDraw (int axisId, QwtScaleDraw *)
	Set the scale draw for an axis

const QwtScaleDraw *	scaleDraw (int axisId) const
	Get the scale draw for an axis (const version)

QwtScaleDraw *	scaleDraw (int axisId)
	Get the scale draw for an axis

void	setAzimuthScaleDraw (QwtRoundScaleDraw *)
	Set the azimuth scale draw

const QwtRoundScaleDraw *	azimuthScaleDraw () const
	Get the azimuth scale draw (const version)

QwtRoundScaleDraw *	azimuthScaleDraw ()
	Get the azimuth scale draw

virtual void	draw (QPainter *p, const QwtScaleMap &azimuthMap, const QwtScaleMap &radialMap, const QPointF &pole, double radius, const QRectF &rect) const override
	Draw the grid

virtual void	updateScaleDiv (const QwtScaleDiv &azimuthMap, const QwtScaleDiv &radialMap, const QwtInterval &) override
	Update the scale division

virtual int	marginHint () const override
	Get the margin hint

Public 成员函数继承自 QwtPolarItem
	QwtPolarItem (const QwtText &title=QwtText())
	Constructor

virtual	~QwtPolarItem ()
	Destructor

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

void	detach ()
	Detach the item from its plot

QwtPolarPlot *	plot () const
	Get the attached plot

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

void	setTitle (const QwtText &title)
	Set the title from 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	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

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
	Get the visibility

virtual void	itemChanged ()
	Update the item and trigger autoRefresh

virtual void	legendChanged ()
	Update the legend

virtual QwtInterval	boundingInterval (int scaleId) const
	Get the bounding interval for a scale

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

QSize	legendIconSize () const
	Get the legend icon size

virtual QList< QwtLegendData >	legendData () const
	Get the legend data

virtual QwtGraphic	legendIcon (int index, const QSizeF &) const
	Get the legend icon

Protected 成员函数
void	drawRays (QPainter *, const QRectF &, const QPointF &pole, double radius, const QwtScaleMap &azimuthMap, const QList< double > &) const
	Draw the rays

void	drawCircles (QPainter *, const QRectF &, const QPointF &pole, const QwtScaleMap &radialMap, const QList< double > &) const
	Draw the circles

void	drawAxis (QPainter *, int axisId) const
	Draw an axis

详细描述

在极坐标图上绘制刻度和网格线的绘图项

成员枚举类型说明

◆ DisplayFlag

enum QwtPolarGrid::DisplayFlag

绘制刻度和网格线时避免冲突的显示标志

枚举值
SmartOriginLabel	尽量避免原点的标签绘制在另一个轴上的情况。
HideMaxRadiusLabel	径向刻度的最外刻度通常靠近画布边界。启用 HideMaxRadiusLabel 后，它将不被绘制。
ClipAxisBackground	当径向刻度的刻度标签绘制在径向网格线（或曲线/光谱图）上时，可能难以阅读。使用 ClipAxisBackground 时，每个标签的边界矩形将添加到裁剪区域。
SmartScaleDraw	当径向轴的骨干非常靠近方位角网格线时，不绘制它。
ClipGridLines	所有网格线在绘制之前都针对绘图区域进行裁剪。当绘图放大时，这将对绘制代码的性能产生显著影响。

◆ GridAttribute

enum QwtPolarGrid::GridAttribute

网格属性

枚举值
AutoScaling	启用自动缩放时，径向轴将调整为当前在画布绘图上可见的区间。

构造及析构函数说明

◆ QwtPolarGrid()

QwtPolarGrid::QwtPolarGrid ( )

explicit

Constructor

构造函数

◆ ~QwtPolarGrid()

QwtPolarGrid::~QwtPolarGrid ( )

virtual

Destructor

析构函数

成员函数说明

◆ axisFont()

QFont QwtPolarGrid::axisFont ( int axisId ) const

Get the axis font

获取特定轴的刻度标签字体

◆ axisPen()

QPen QwtPolarGrid::axisPen ( int axisId ) const

Get the axis pen

获取特定轴的画笔

◆ azimuthScaleDraw() [1/2]

QwtRoundScaleDraw * QwtPolarGrid::azimuthScaleDraw ( )

Get the azimuth scale draw

获取方位角刻度的刻度绘制器

◆ azimuthScaleDraw() [2/2]

const QwtRoundScaleDraw * QwtPolarGrid::azimuthScaleDraw ( ) const

Get the azimuth scale draw (const version)

获取方位角刻度的刻度绘制器

◆ draw()

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

overridevirtual

Draw the grid

绘制网格和轴

实现了 QwtPolarItem.

◆ drawAxis()

void QwtPolarGrid::drawAxis	(	QPainter *	painter,
		int	axisId
	)		const

protected

Draw an axis

Paint an axis

参数

painter	Painter
axisId	Axis id (QwtPolar::Axis)

◆ drawCircles()

void QwtPolarGrid::drawCircles	(	QPainter *	painter,
		const QRectF &	canvasRect,
		const QPointF &	pole,
		const QwtScaleMap &	radialMap,
		const QList< double > &	values
	)		const

protected

Draw the circles

Draw circles

参数

painter	Painter
canvasRect	Contents rect of the canvas in painter coordinates
pole	Position of the pole in painter coordinates
radialMap	Maps radius values into painter coordinates.
values	Radial values, indicating the distances from the pole

◆ drawRays()

void QwtPolarGrid::drawRays	(	QPainter *	painter,
		const QRectF &	canvasRect,
		const QPointF &	pole,
		double	radius,
		const QwtScaleMap &	azimuthMap,
		const QList< double > &	values
	)		const

protected

Draw the rays

Draw lines from the pole

参数

painter	Painter
canvasRect	Contents rect of the canvas in painter coordinates
pole	Position of the pole in painter coordinates
radius	Length of the lines in painter coordinates
azimuthMap	Maps azimuth values to values related to 0.0, M_2PI
values	Azimuth values, indicating the direction of the lines

◆ isAxisVisible()

bool QwtPolarGrid::isAxisVisible ( int axisId ) const

Check if an axis is visible

检查轴是否可见

◆ isGridVisible()

bool QwtPolarGrid::isGridVisible ( int scaleId ) const

Check if the grid is visible for a scale

检查刻度的网格线是否可见

◆ isMinorGridVisible()

bool QwtPolarGrid::isMinorGridVisible ( int scaleId ) const

Check if the minor grid is visible for a scale

检查刻度的次网格线是否可见

◆ majorGridPen()

QPen QwtPolarGrid::majorGridPen ( int scaleId ) const

Get the major grid pen for a scale

获取特定刻度主网格线的画笔

◆ marginHint()

int QwtPolarGrid::marginHint ( ) const

overridevirtual

Get the margin hint

获取边距提示

重载 QwtPolarItem .

◆ minorGridPen()

QPen QwtPolarGrid::minorGridPen ( int scaleId ) const

Get the minor grid pen for a scale

获取特定刻度次网格线的画笔

◆ rtti()

int QwtPolarGrid::rtti ( ) const

overridevirtual

Get the runtime type information

获取运行时类型信息

重载 QwtPolarItem .

◆ scaleDraw() [1/2]

QwtScaleDraw * QwtPolarGrid::scaleDraw ( int axisId )

Get the scale draw for an axis

获取指定轴的刻度绘制器

◆ scaleDraw() [2/2]

const QwtScaleDraw * QwtPolarGrid::scaleDraw ( int axisId ) const

Get the scale draw for an axis (const version)

获取指定轴的刻度绘制器

◆ setAxisFont()

void QwtPolarGrid::setAxisFont	(	int	axisId,
		const QFont &	font
	)

Set the axis font

为特定轴的刻度标签分配字体

◆ setAxisPen()

void QwtPolarGrid::setAxisPen	(	int	axisId,
		const QPen &	pen
	)

Set the axis pen

为绘制轴分配画笔

◆ setAzimuthScaleDraw()

void QwtPolarGrid::setAzimuthScaleDraw ( QwtRoundScaleDraw * scaleDraw )

Set the azimuth scale draw

为方位角刻度设置刻度绘制器

◆ setDisplayFlag()

void QwtPolarGrid::setDisplayFlag	(	DisplayFlag	flag,
		bool	on = `true`
	)

Set a display flag

更改显示标志

◆ setFont()

void QwtPolarGrid::setFont ( const QFont & font )

Set the font

为所有刻度标签分配字体

◆ setGridAttribute()

void QwtPolarGrid::setGridAttribute	(	GridAttribute	attribute,
		bool	on = `true`
	)

Set a grid attribute

指定网格的属性

◆ setMajorGridPen() [1/2]

void QwtPolarGrid::setMajorGridPen ( const QPen & pen )

Set the major grid pen

为主网格线分配画笔

◆ setMajorGridPen() [2/2]

void QwtPolarGrid::setMajorGridPen	(	int	scaleId,
		const QPen &	pen
	)

Set the major grid pen for a scale

为特定刻度的主网格线分配画笔

◆ setMinorGridPen() [1/2]

void QwtPolarGrid::setMinorGridPen ( const QPen & pen )

Set the minor grid pen

为次网格线分配画笔

◆ setMinorGridPen() [2/2]

void QwtPolarGrid::setMinorGridPen	(	int	scaleId,
		const QPen &	pen
	)

Set the minor grid pen for a scale

为特定刻度的次网格线分配画笔

◆ setPen()

void QwtPolarGrid::setPen ( const QPen & pen )

Set the pen

为所有轴和网格线分配画笔

◆ setScaleDraw()

void QwtPolarGrid::setScaleDraw	(	int	axisId,
		QwtScaleDraw *	scaleDraw
	)

Set the scale draw for an axis

为指定轴设置刻度绘制器

◆ showAxis()

void QwtPolarGrid::showAxis	(	int	axisId,
		bool	show = `true`
	)

Show/hide an axis

显示/隐藏轴

◆ showGrid()

void QwtPolarGrid::showGrid	(	int	scaleId,
		bool	show = `true`
	)

Show/hide the grid for a scale

显示/隐藏刻度的网格线

◆ showMinorGrid()

void QwtPolarGrid::showMinorGrid	(	int	scaleId,
		bool	show = `true`
	)

Show/hide the minor grid for a scale

显示/隐藏刻度的次网格线

◆ testDisplayFlag()

bool QwtPolarGrid::testDisplayFlag ( DisplayFlag flag ) const

Test a display flag

测试显示标志

◆ testGridAttribute()

bool QwtPolarGrid::testGridAttribute ( GridAttribute attribute ) const

Test a grid attribute

测试网格属性

◆ updateScaleDiv()

void QwtPolarGrid::updateScaleDiv	(	const QwtScaleDiv &	azimuthScaleDiv,
		const QwtScaleDiv &	radialScaleDiv,
		const QwtInterval &	interval
	)

overridevirtual

Update the scale division

更新项以响应轴刻度分度的变化

重载 QwtPolarItem .

该类的文档由以下文件生成:

/home/runner/work/QWT/QWT/src/plot/qwt_polar_grid.h
/home/runner/work/QWT/QWT/src/plot/qwt_polar_grid.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

◆ DisplayFlag

◆ GridAttribute

构造及析构函数说明

◆ QwtPolarGrid()

◆ ~QwtPolarGrid()

成员函数说明

◆ axisFont()

◆ axisPen()

◆ azimuthScaleDraw() [1/2]

◆ azimuthScaleDraw() [2/2]

◆ draw()

◆ drawAxis()

◆ drawCircles()

◆ drawRays()

◆ isAxisVisible()

◆ isGridVisible()

◆ isMinorGridVisible()

◆ majorGridPen()

◆ marginHint()

◆ minorGridPen()

◆ rtti()

◆ scaleDraw() [1/2]

◆ scaleDraw() [2/2]

◆ setAxisFont()

◆ setAxisPen()

◆ setAzimuthScaleDraw()

◆ setDisplayFlag()

◆ setFont()

◆ setGridAttribute()

◆ setMajorGridPen() [1/2]

◆ setMajorGridPen() [2/2]

◆ setMinorGridPen() [1/2]

◆ setMinorGridPen() [2/2]

◆ setPen()

◆ setScaleDraw()

◆ showAxis()

◆ showGrid()

◆ showMinorGrid()

◆ testDisplayFlag()

◆ testGridAttribute()

◆ updateScaleDiv()