SiSpinBox Class Reference

A spin box with SI prefix support. This spin box supports the SI prefixes (k/M/G/T) after its value and allows floating point values. The step size is increasing in an exponential way, to keep the percentual difference between the steps at equal levels. More...

#include <sispinbox.h>

Inheritance diagram for SiSpinBox:

Public Member Functions
	SiSpinBox (QWidget *parent=nullptr)
	Initializes the SiSpinBox internals.
	SiSpinBox (Unit unit, QWidget *parent=nullptr)
	Initializes the SiSpinBox, allowing the user to choose the unit.
	~SiSpinBox () override
	Cleans up the main window.
QValidator::State	validate (QString &input, int &pos) const override
	Validates the text after user input.
double	valueFromText (const QString &text) const override
	Parse value from input text.
QString	textFromValue (double val) const override
	Get string representation of value.
void	fixup (QString &input) const override
	Fixes the text after the user finished changing it.
void	stepBy (int steps) override
	Increase/decrease the values in fixed steps.
bool	setUnit (Unit unit)
	Set the unit for this spin box.
void	setUnitPostfix (const QString &postfix)
	Set the unit postfix for this spin box.
void	setSteps (const QList< double > &steps)
	Set the steps the spin box will take.
void	setMode (const int mode)
	Set the mode.

Private Slots
void	resetSteppedTo ()
	Resets the ::steppedTo flag after the value has been changed.

Private Member Functions
void	init ()
	Generic initializations.
void	setBackground ()

Private Attributes
Unit	unit
	The SI unit used for this spin box.
QString	unitPostfix
	Shown after the unit.
QList< double >	steps
	The steps, begins from start after last element.
int	mode
	The mode, fixed or constant.
bool	steppedTo
	true, if the current value was reached using stepBy
int	stepId
	The index of the last step reached using stepBy.

Detailed Description

A spin box with SI prefix support. This spin box supports the SI prefixes (k/M/G/T) after its value and allows floating point values. The step size is increasing in an exponential way, to keep the percentual difference between the steps at equal levels.

Constructor & Destructor Documentation

SiSpinBox() [1/2]

SiSpinBox::SiSpinBox ( QWidget * parent = nullptr )

explicit

Initializes the SiSpinBox internals.

Parameters

parent

The parent widget.

SiSpinBox() [2/2]

SiSpinBox::SiSpinBox	(	Unit	unit,
		QWidget *	parent = nullptr )

Initializes the SiSpinBox, allowing the user to choose the unit.

Parameters

unit	The unit shown for the value in the spin box.
parent	The parent widget.

~SiSpinBox()

SiSpinBox::~SiSpinBox ( )

override

Cleans up the main window.

Member Function Documentation

fixup()

void SiSpinBox::fixup ( QString & input ) const

override

Fixes the text after the user finished changing it.

Parameters

input

The content of the text box.

init()

void SiSpinBox::init ( )

private

Generic initializations.

resetSteppedTo

void SiSpinBox::resetSteppedTo ( )

privateslot

Resets the ::steppedTo flag after the value has been changed.

setBackground()

void SiSpinBox::setBackground ( )

private

setMode()

void SiSpinBox::setMode

(

const int

newMode

)

Set the mode.

Parameters

mode	The mode, the value 0 will have fixed interval, otherwise the value will have interval within steps itself.

setSteps()

void SiSpinBox::setSteps

(

const QList< double > &

newSteps

)

Set the steps the spin box will take.

Parameters

newSteps

The steps, will be extended with the ratio from the start after the last element.

setUnit()

bool SiSpinBox::setUnit

(

Unit

newUnit

)

Set the unit for this spin box.

Parameters

newUnit

The unit shown for the value in the spin box.

Returns

true on success, false on invalid unit.

setUnitPostfix()

void SiSpinBox::setUnitPostfix

(

const QString &

postfix

)

Set the unit postfix for this spin box.

Parameters

postfix

the string shown after the unit in the spin box.

stepBy()

void SiSpinBox::stepBy ( int doStep )

override

Increase/decrease the values in fixed steps.

Parameters

doStep

The number of steps, positive means increase.

textFromValue()

QString SiSpinBox::textFromValue ( double val ) const

override

Get string representation of value.

Parameters

val	Value in base unit.

Returns

String representation containing value and (prefix+)unit.

validate()

QValidator::State SiSpinBox::validate ( QString & input, int & pos ) const

override

Validates the text after user input.

Parameters

input	The content of the text box.
pos	The position of the cursor in the text box.

Returns

Validity of the current text.

valueFromText()

double SiSpinBox::valueFromText ( const QString & text ) const

override

Parse value from input text.

Parameters

text	The content of the text box.

Returns

Value in base unit.

Field Documentation

mode

int SiSpinBox::mode

private

The mode, fixed or constant.

stepId

int SiSpinBox::stepId

private

The index of the last step reached using stepBy.

steppedTo

bool SiSpinBox::steppedTo

private

true, if the current value was reached using stepBy

steps

QList< double > SiSpinBox::steps

private

The steps, begins from start after last element.

unit

Unit SiSpinBox::unit

private

The SI unit used for this spin box.

unitPostfix

QString SiSpinBox::unitPostfix

private

Shown after the unit.

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The documentation for this class was generated from the following files:

• widgets/sispinbox.h
• widgets/sispinbox.cpp