A class representing a scale division 更多...

#include <qwt_scale_div.h>

Public 类型
enum	TickType { NoTick = -1 , MinorTick , MediumTick , MajorTick , NTickTypes }
	Scale tick types 更多...

Public 成员函数
	QwtScaleDiv (double lowerBound=0.0, double upperBound=0.0)
	Construct a division without ticks

	QwtScaleDiv (const QwtInterval &, QList< double >[NTickTypes])
	Construct a scale division

	QwtScaleDiv (double lowerBound, double upperBound, QList< double >[NTickTypes])
	Construct a scale division

	QwtScaleDiv (double lowerBound, double upperBound, const QList< double > &minorTicks, const QList< double > &mediumTicks, const QList< double > &majorTicks)
	Construct a scale division

	QwtScaleDiv (const QwtScaleDiv &)
	Copy constructor

	QwtScaleDiv (QwtScaleDiv &&) noexcept=default

QwtScaleDiv &	operator= (const QwtScaleDiv &)
	Copy assignment

QwtScaleDiv &	operator= (QwtScaleDiv &&) noexcept=default

bool	operator== (const QwtScaleDiv &) const
	Equality operator

bool	operator!= (const QwtScaleDiv &) const
	Inequality operator

bool	fuzzyCompare (const QwtScaleDiv &other) const
	Fuzzy comparison

void	setInterval (double lowerBound, double upperBound)
	Change the interval

void	setInterval (const QwtInterval &)
	Change the interval

QwtInterval	interval () const
	Get the interval from lowerBound to upperBound

void	setLowerBound (double) noexcept
	Set the first boundary

double	lowerBound () const noexcept
	Get the first boundary

void	setUpperBound (double) noexcept
	Set the second boundary

double	upperBound () const noexcept
	Get the upper bound

double	range () const noexcept
	Get the range (upperBound - lowerBound)

bool	contains (double value) const
	Check if a value is between lowerBound() and upperBound()

void	setTicks (int tickType, const QList< double > &)
	Assign ticks

QList< double >	ticks (int tickType) const
	Return a list of ticks

bool	isEmpty () const
	Check if the scale division is empty

bool	isIncreasing () const
	Check if the scale division is increasing

void	invert ()
	Invert the scale division

QwtScaleDiv	inverted () const
	Get a scale division with inverted boundaries and ticks

QwtScaleDiv	bounded (double lowerBound, double upperBound) const
	Return a scale division with an interval [lowerBound, upperBound] where all ticks outside this interval are removed

详细描述

A class representing a scale division

A Qwt scale is defined by its boundaries and 3 list for the positions of the major, medium and minor ticks.

The upperBound() might be smaller than the lowerBound() to indicate inverted scales.

Scale divisions can be calculated from a QwtScaleEngine.

参见: QwtScaleEngine::divideScale(), QwtPlot::setAxisScaleDiv(), QwtAbstractSlider::setScaleDiv()

成员枚举类型说明

◆ TickType

enum QwtScaleDiv::TickType

Scale tick types

枚举值
NoTick	No ticks
MinorTick	Minor ticks
MediumTick	Medium ticks
MajorTick	Major ticks
NTickTypes	Number of valid tick types

构造及析构函数说明

◆ QwtScaleDiv() [1/4]

QwtScaleDiv::QwtScaleDiv	(	double	lowerBound = `0.0`,
		double	upperBound = `0.0`
	)

explicit

Construct a division without ticks

参数

lowerBound	First boundary
upperBound	Second boundary

注解: lowerBound might be greater than upperBound for inverted scales

◆ QwtScaleDiv() [2/4]

QwtScaleDiv::QwtScaleDiv	(	const QwtInterval &	interval,
		QList< double >	ticks[NTickTypes]
	)

explicit

Construct a scale division

参数

interval	Interval
ticks	List of major, medium and minor ticks

◆ QwtScaleDiv() [3/4]

QwtScaleDiv::QwtScaleDiv	(	double	lowerBound,
		double	upperBound,
		QList< double >	ticks[NTickTypes]
	)

explicit

Construct a scale division

参数

lowerBound	First boundary
upperBound	Second boundary
ticks	List of major, medium and minor ticks

注解: lowerBound might be greater than upperBound for inverted scales

◆ QwtScaleDiv() [4/4]

QwtScaleDiv::QwtScaleDiv	(	double	lowerBound,
		double	upperBound,
		const QList< double > &	minorTicks,
		const QList< double > &	mediumTicks,
		const QList< double > &	majorTicks
	)

explicit

Construct a scale division

参数

lowerBound	First boundary
upperBound	Second boundary
minorTicks	List of minor ticks
mediumTicks	List of medium ticks
majorTicks	List of major ticks

注解: lowerBound might be greater than upperBound for inverted scales

成员函数说明

◆ bounded()

QwtScaleDiv QwtScaleDiv::bounded	(	double	lowerBound,
		double	upperBound
	)		const

Return a scale division with an interval [lowerBound, upperBound] where all ticks outside this interval are removed

参数

lowerBound	Lower bound
upperBound	Upper bound

返回: Scale division with all ticks inside of the given interval

注解: lowerBound might be greater than upperBound for inverted scales

◆ contains()

bool QwtScaleDiv::contains ( double value ) const

Check if a value is between lowerBound() and upperBound()

参数

value Value

返回: true if value is within bounds

◆ fuzzyCompare()

bool QwtScaleDiv::fuzzyCompare ( const QwtScaleDiv & other ) const

Fuzzy comparison

参数

other Other scale division

返回: true if this instance is approximately equal to other

◆ interval()

QwtInterval QwtScaleDiv::interval ( ) const

Get the interval from lowerBound to upperBound

返回: Interval from lowerBound to upperBound

◆ invert()

void QwtScaleDiv::invert ( )

Invert the scale division

参见: inverted()

◆ inverted()

QwtScaleDiv QwtScaleDiv::inverted ( ) const

Get a scale division with inverted boundaries and ticks

返回: A scale division with inverted boundaries and ticks

参见: invert()

◆ isEmpty()

bool QwtScaleDiv::isEmpty ( ) const

Check if the scale division is empty

返回: true if lowerBound() == upperBound()

◆ isIncreasing()

bool QwtScaleDiv::isIncreasing ( ) const

Check if the scale division is increasing

返回: true if lowerBound() <= upperBound()

◆ lowerBound()

double QwtScaleDiv::lowerBound ( ) const

noexcept

Get the first boundary

返回: First boundary

参见: upperBound()

◆ operator!=()

bool QwtScaleDiv::operator!= ( const QwtScaleDiv & other ) const

Inequality operator

返回: true if this instance is not equal to other

◆ operator==()

bool QwtScaleDiv::operator== ( const QwtScaleDiv & other ) const

Equality operator

返回: true if this instance is equal to other

◆ range()

double QwtScaleDiv::range ( ) const

noexcept

Get the range (upperBound - lowerBound)

返回: upperBound() - lowerBound()

◆ setInterval() [1/2]

void QwtScaleDiv::setInterval ( const QwtInterval & interval )

Change the interval

参数

interval Interval

◆ setInterval() [2/2]

void QwtScaleDiv::setInterval	(	double	lowerBound,
		double	upperBound
	)

Change the interval

参数

lowerBound	First boundary
upperBound	Second boundary

注解: lowerBound might be greater than upperBound for inverted scales

◆ setLowerBound()

void QwtScaleDiv::setLowerBound ( double lowerBound )

noexcept

Set the first boundary

参数

lowerBound First boundary

参见: lowerBound(), setUpperBound()

◆ setTicks()

void QwtScaleDiv::setTicks	(	int	tickType,
		const QList< double > &	ticks
	)

Assign ticks

参数

tickType	MinorTick, MediumTick or MajorTick
ticks	Values of the tick positions

◆ setUpperBound()

void QwtScaleDiv::setUpperBound ( double upperBound )

noexcept

Set the second boundary

参数

upperBound Second boundary

参见: upperBound(), setLowerBound()

◆ ticks()

QList< double > QwtScaleDiv::ticks ( int tickType ) const

Return a list of ticks

参数

tickType MinorTick, MediumTick or MajorTick

返回: Tick list

◆ upperBound()

double QwtScaleDiv::upperBound ( ) const

noexcept

Get the upper bound

返回: Upper bound

参见: lowerBound()

该类的文档由以下文件生成:

/home/runner/work/QWT/QWT/src/core/qwt_scale_div.h
/home/runner/work/QWT/QWT/src/core/qwt_scale_div.cpp

Public 类型

Public 成员函数

详细描述

成员枚举类型说明

◆ TickType

构造及析构函数说明

◆ QwtScaleDiv() [1/4]

◆ QwtScaleDiv() [2/4]

◆ QwtScaleDiv() [3/4]

◆ QwtScaleDiv() [4/4]

成员函数说明

◆ bounded()

◆ contains()

◆ fuzzyCompare()

◆ interval()

◆ invert()

◆ inverted()

◆ isEmpty()

◆ isIncreasing()

◆ lowerBound()

◆ operator!=()

◆ operator==()

◆ range()

◆ setInterval() [1/2]

◆ setInterval() [2/2]

◆ setLowerBound()

◆ setTicks()

◆ setUpperBound()

◆ ticks()

◆ upperBound()