QwtSimpleCompassRose类 参考

A simple rose for QwtCompass 更多...

#include <qwt_compass_rose.h>

类 QwtSimpleCompassRose 继承关系图:

类
class	PrivateData

Public 成员函数
	QwtSimpleCompassRose (int numThorns=8, int numThornLevels=-1)
	Constructor
void	setWidth (double)
	Set the width of the rose heads
double	width () const
	Get the width of the rose heads
void	setNumThorns (int)
	Set the number of thorns on one level
int	numThorns () const
	Get the number of thorns
void	setNumThornLevels (int)
	Set the number of thorn levels
int	numThornLevels () const
	Get the number of thorn levels
void	setShrinkFactor (double factor)
	Set the shrink factor for thorns with each level
double	shrinkFactor () const
	Get the shrink factor for thorns with each level
void	setFlatStyle (bool)
	Set flat style
bool	flatStyle () const
	Return whether flat style is enabled
virtual void	draw (QPainter *, const QPointF &center, double radius, double north, QPalette::ColorGroup=QPalette::Active) const override
	Draw the rose
Public 成员函数 继承自 QwtCompassRose
	QwtCompassRose ()
	Constructor
virtual	~QwtCompassRose ()
	Destructor
virtual void	setPalette (const QPalette &)
	Assign a palette
const QPalette &	palette () const
	Get the current palette

静态 Public 成员函数
static void	drawRose (QPainter *, const QPalette &, const QPointF &center, double radius, double north, double width, int numThorns, int numThornLevels, double shrinkFactor, bool flatStyle=true)
	Static helper to draw a rose with specified parameters

详细描述

A simple rose for QwtCompass

QwtSimpleCompassRose provides a simple compass rose implementation with configurable thorn count and levels.

构造及析构函数说明

QwtSimpleCompassRose()

QwtSimpleCompassRose::QwtSimpleCompassRose	(	int	numThorns = 8,
		int	numThornLevels = -1
	)

Constructor

参数

[in]	numThorns	Number of thorns
[in]	numThornLevels	Number of thorn levels (-1 means auto)

Destructor

成员函数说明

draw()

void QwtSimpleCompassRose::draw ( QPainter *  painter, const QPointF &  center, double  radius, double  north, QPalette::ColorGroup  cg = QPalette::Active  ) const

overridevirtual

Draw the rose

参数

[in]	painter	Painter
[in]	center	Center point
[in]	radius	Radius of the rose
[in]	north	Position pointing north
[in]	cg	Color group

实现了 QwtCompassRose.

drawRose()

void QwtSimpleCompassRose::drawRose ( QPainter *  painter, const QPalette &  palette, const QPointF &  center, double  radius, double  north, double  width, int  numThorns, int  numThornLevels, double  shrinkFactor, bool  flatStyle = true  )

static

Static helper to draw a rose with specified parameters

参数

[in]	painter	Painter
[in]	palette	Palette for drawing
[in]	center	Center of the rose
[in]	radius	Radius of the rose
[in]	north	Position pointing to north
[in]	width	Width of the rose heads
[in]	numThorns	Number of thorns
[in]	numThornLevels	Number of thorn levels
[in]	shrinkFactor	Factor to shrink the thorns with each level

flatStyle()

bool QwtSimpleCompassRose::flatStyle

(

)

const

Return whether flat style is enabled

参见

setFlatStyle()

numThornLevels()

int QwtSimpleCompassRose::numThornLevels

(

)

const

Get the number of thorn levels

返回

Number of thorn levels

参见

setNumThorns(), setNumThornLevels()

numThorns()

int QwtSimpleCompassRose::numThorns

(

)

const

Get the number of thorns

返回

Number of thorns

参见

setNumThorns(), setNumThornLevels()

setFlatStyle()

void QwtSimpleCompassRose::setFlatStyle

(

bool

on

)

Set flat style

When enabled (default), thorns are drawn with a single solid color instead of the two-tone Light/Dark 3D effect.

参数

on	true for flat style, false for classic 3D style

参见

flatStyle()

setNumThornLevels()

void QwtSimpleCompassRose::setNumThornLevels

(

int

numThornLevels

)

Set the number of thorn levels

参数

[in]

numThornLevels

Number of thorn levels

参见

setNumThorns(), numThornLevels()

setNumThorns()

void QwtSimpleCompassRose::setNumThorns

(

int

numThorns

)

Set the number of thorns on one level

参数

[in]

numThorns

Number of thorns (aligned to multiple of 4, minimum 4)

参见

numThorns(), setNumThornLevels()

setShrinkFactor()

void QwtSimpleCompassRose::setShrinkFactor

(

double

factor

)

Set the shrink factor for thorns with each level

参数

[in]

factor

Shrink factor (default: 0.9)

参见

shrinkFactor()

setWidth()

void QwtSimpleCompassRose::setWidth

(

double

width

)

Set the width of the rose heads

参数

[in]

width

Width (range: 0.03 to 0.4, lower values make thinner heads)

shrinkFactor()

double QwtSimpleCompassRose::shrinkFactor

(

)

const

Get the shrink factor for thorns with each level

返回

Shrink factor

参见

setShrinkFactor()

width()

double QwtSimpleCompassRose::width

(

)

const

Get the width of the rose heads

返回

Width of the rose heads

参见

setWidth()

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该类的文档由以下文件生成:

• /home/runner/work/QWT/QWT/src/plot/qwt_compass_rose.h
• /home/runner/work/QWT/QWT/src/plot/qwt_compass_rose.cpp