A class representing a scale division. More...

#include <qwt_scale_div.h>

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

Public Member Functions
	QwtScaleDiv (double lowerBound=0.0, double upperBound=0.0)

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

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

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

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

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

void	setInterval (double lowerBound, double upperBound)

void	setInterval (const QwtInterval &)

QwtInterval	interval () const

void	setLowerBound (double)

double	lowerBound () const

void	setUpperBound (double)

double	upperBound () const

double	range () const

bool	contains (double value) const

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

QList< double >	ticks (int tickType) const

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

bool	isIncreasing () const
	Check if the scale division is increasing( lowerBound() <= upperBound() )

void	invert ()

QwtScaleDiv	inverted () const

QwtScaleDiv	bounded (double lowerBound, double upperBound) const

Detailed Description

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.

See also: QwtScaleEngine::divideScale(), QwtPlot::setAxisScaleDiv(), QwtAbstractSlider::setScaleDiv()

Definition at line 33 of file qwt_scale_div.h.

Member Enumeration Documentation

◆ TickType

enum QwtScaleDiv::TickType

Scale tick types.

Enumerator
NoTick	No ticks.
MinorTick	Minor ticks.
MediumTick	Medium ticks.
MajorTick	Major ticks.
NTickTypes	Number of valid tick types.

Definition at line 37 of file qwt_scale_div.h.

Constructor & Destructor Documentation

◆ QwtScaleDiv() [1/4]

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

explicit

Construct a division without ticks

Parameters

lowerBound	First boundary
upperBound	Second boundary

Note: lowerBound might be greater than upperBound for inverted scales

Definition at line 21 of file qwt_scale_div.cpp.

◆ QwtScaleDiv() [2/4]

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

explicit

Construct a scale division

Parameters

interval	Interval
ticks	List of major, medium and minor ticks

Definition at line 33 of file qwt_scale_div.cpp.

◆ QwtScaleDiv() [3/4]

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

explicit

Construct a scale division

Parameters

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

Note: lowerBound might be greater than upperBound for inverted scales

Definition at line 51 of file qwt_scale_div.cpp.

◆ 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

Parameters

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

Note: lowerBound might be greater than upperBound for inverted scales

Definition at line 71 of file qwt_scale_div.cpp.

Member Function Documentation

◆ 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

Parameters

lowerBound	Lower bound
upperBound	Upper bound

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

Note: lowerBound might be greater than upperBound for inverted scales

Definition at line 263 of file qwt_scale_div.cpp.

◆ contains()

bool QwtScaleDiv::contains ( double value ) const

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

Parameters

value Value

Returns: true/false

Definition at line 212 of file qwt_scale_div.cpp.

◆ interval()

QwtInterval QwtScaleDiv::interval ( ) const

Returns: lowerBound -> upperBound

Definition at line 111 of file qwt_scale_div.cpp.

◆ invert()

void QwtScaleDiv::invert ( )

Invert the scale division

See also: inverted()

Definition at line 224 of file qwt_scale_div.cpp.

◆ inverted()

QwtScaleDiv QwtScaleDiv::inverted ( ) const

Returns: A scale division with inverted boundaries and ticks

See also: invert()

Definition at line 244 of file qwt_scale_div.cpp.

◆ lowerBound()

double QwtScaleDiv::lowerBound ( ) const

Returns: First boundary

See also: upperBound()

Definition at line 131 of file qwt_scale_div.cpp.

◆ operator!=()

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

Inequality.

Returns: true if this instance is not equal to other

Definition at line 189 of file qwt_scale_div.cpp.

◆ operator==()

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

Equality operator.

Returns: true if this instance is equal to other

Definition at line 168 of file qwt_scale_div.cpp.

◆ range()

double QwtScaleDiv::range ( ) const

Returns: upperBound() - lowerBound()

Definition at line 159 of file qwt_scale_div.cpp.

◆ setInterval() [1/2]

void QwtScaleDiv::setInterval ( const QwtInterval & interval )

Change the interval

Parameters

interval Interval

Definition at line 102 of file qwt_scale_div.cpp.

◆ setInterval() [2/2]

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

Change the interval

Parameters

lowerBound	First boundary
upperBound	Second boundary

Note: lowerBound might be greater than upperBound for inverted scales

Definition at line 91 of file qwt_scale_div.cpp.

◆ setLowerBound()

void QwtScaleDiv::setLowerBound ( double lowerBound )

Set the first boundary

Parameters

lowerBound First boundary

See also: lowerBound(), setUpperBound()

Definition at line 122 of file qwt_scale_div.cpp.

◆ setTicks()

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

Assign ticks

Parameters

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

Definition at line 297 of file qwt_scale_div.cpp.

◆ setUpperBound()

void QwtScaleDiv::setUpperBound ( double upperBound )

Set the second boundary

Parameters

upperBound Second boundary

See also: upperBound(), setLowerBound()

Definition at line 142 of file qwt_scale_div.cpp.

◆ ticks()

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

Return a list of ticks

Parameters

tickType MinorTick, MediumTick or MajorTick

Returns: Tick list

Definition at line 309 of file qwt_scale_div.cpp.

◆ upperBound()

double QwtScaleDiv::upperBound ( ) const

Returns: upper bound

See also: lowerBound()

Definition at line 151 of file qwt_scale_div.cpp.

Public Types

Public Member Functions

Detailed Description

Member Enumeration Documentation

◆ TickType

Constructor & Destructor Documentation

◆ QwtScaleDiv() [1/4]

◆ QwtScaleDiv() [2/4]

◆ QwtScaleDiv() [3/4]

◆ QwtScaleDiv() [4/4]

Member Function Documentation

◆ bounded()

◆ contains()

◆ interval()

◆ invert()

◆ inverted()

◆ lowerBound()

◆ operator!=()

◆ operator==()

◆ range()

◆ setInterval() [1/2]

◆ setInterval() [2/2]

◆ setLowerBound()

◆ setTicks()

◆ setUpperBound()

◆ ticks()

◆ upperBound()