ModelView::ScientificSpinBox Class Reference

Inheritance diagram for ModelView::ScientificSpinBox:

Collaboration diagram for ModelView::ScientificSpinBox:

Signals
void	valueChanged (double value)

Public Member Functions
	ScientificSpinBox (QWidget *parent=nullptr)
	~ScientificSpinBox () override
int	decimals () const
void	fixup (QString &) const override
double	maximum () const
double	minimum () const
void	setDecimals (int)
void	setMaximum (double max)
void	setMinimum (double min)
void	setSingleStep (double step)
void	setValue (double val)
double	singleStep () const
void	stepBy (int steps) override
QValidator::State	validate (QString &, int &) const override
double	value () const

Static Public Member Functions
static double	round (double val, int decimals)
static double	toDouble (QString text, const QDoubleValidator &validator, double min, double max, double default_value)
static QString	toString (double val, int decimal_points)

Protected Member Functions
QAbstractSpinBox::StepEnabled	stepEnabled () const override

Properties
double	value

Private Member Functions
bool	inRange (double val) const
void	updateText ()
void	updateValue ()

Private Attributes
int	m_decimals
double	m_max
double	m_min
double	m_step
QDoubleValidator	m_validator
double	m_value

Detailed Description

Definition at line 23 of file scientificspinbox.h.

Constructor & Destructor Documentation

ScientificSpinBox()

ScientificSpinBox::ScientificSpinBox

(

QWidget *

parent = nullptr

)

Definition at line 32 of file scientificspinbox.cpp.

    : QAbstractSpinBox(parent)
    , m_value(0.0)
    , m_min(-max_val)
    , m_max(max_val)
    , m_step(1.0)
    , m_decimals(Constants::default_double_decimals)
{
    QLocale locale;
    locale.setNumberOptions(QLocale::RejectGroupSeparator);
    m_validator.setLocale(locale);
    m_validator.setNotation(QDoubleValidator::ScientificNotation);
 
    connect(this, &QAbstractSpinBox::editingFinished, this, &ScientificSpinBox::updateValue);
}

References m_validator, and updateValue().

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~ScientificSpinBox()

ScientificSpinBox::~ScientificSpinBox ( )

overridedefault

Member Function Documentation

decimals()

int ScientificSpinBox::decimals

(

)

const

Definition at line 114 of file scientificspinbox.cpp.

{
    return m_decimals;
}

References m_decimals.

Referenced by round().

fixup()

void ModelView::ScientificSpinBox::fixup ( QString &  ) const

inlineoverride

Definition at line 48 of file scientificspinbox.h.

{}

inRange()

bool ScientificSpinBox::inRange ( double  val ) const

private

Definition at line 165 of file scientificspinbox.cpp.

{
    return val >= m_min && val <= m_max;
}

References m_max, and m_min.

Referenced by stepBy().

maximum()

double ScientificSpinBox::maximum

(

)

const

Definition at line 94 of file scientificspinbox.cpp.

{
    return m_max;
}

References m_max.

minimum()

double ScientificSpinBox::minimum

(

)

const

Definition at line 82 of file scientificspinbox.cpp.

{
    return m_min;
}

References m_min.

round()

double ScientificSpinBox::round ( double  val, int  decimals  )

static

Definition at line 147 of file scientificspinbox.cpp.

{
    char notation = useExponentialNotation(val) ? 'e' : 'f';
    return QString::number(val, notation, decimals).toDouble();
}

References decimals().

Referenced by setValue(), stepBy(), TEST_F(), and value().

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setDecimals()

void ScientificSpinBox::setDecimals

(

int

val

)

Definition at line 106 of file scientificspinbox.cpp.

{
    if (val <= 0)
        return;
    m_decimals = val;
    setValue(m_value);
}

References m_decimals, m_value, and setValue().

Referenced by ModelView::ScientificSpinBoxEditor::setDecimals().

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setMaximum()

void ScientificSpinBox::setMaximum

(

double

max

)

Definition at line 99 of file scientificspinbox.cpp.

{
    m_max = max;
    if (m_value > m_max)
        setValue(m_max);
}

References m_max, m_value, and setValue().

Referenced by ModelView::ScientificSpinBoxEditor::setRange().

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setMinimum()

void ScientificSpinBox::setMinimum

(

double

min

)

Definition at line 87 of file scientificspinbox.cpp.

{
    m_min = min;
    if (m_value < m_min)
        setValue(m_min);
}

References m_min, m_value, and setValue().

Referenced by ModelView::ScientificSpinBoxEditor::setRange().

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setSingleStep()

void ScientificSpinBox::setSingleStep

(

double

step

)

Definition at line 77 of file scientificspinbox.cpp.

{
    m_step = step;
}

References m_step.

Referenced by ModelView::ScientificSpinBoxEditor::setSingleStep().

setValue()

void ScientificSpinBox::setValue

(

double

val

)

Definition at line 57 of file scientificspinbox.cpp.

{
    double old_val = m_value;
    m_value = round(val, m_decimals);
    updateText();
    if (std::abs(old_val - m_value) > min_val)
        emit valueChanged(m_value);
}

References m_decimals, m_value, round(), updateText(), and valueChanged().

Referenced by setDecimals(), setMaximum(), setMinimum(), stepBy(), ModelView::ScientificSpinBoxEditor::update_components(), and updateValue().

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singleStep()

double ScientificSpinBox::singleStep

(

)

const

Definition at line 72 of file scientificspinbox.cpp.

{
    return m_step;
}

References m_step.

stepBy()

void ScientificSpinBox::stepBy ( int  steps )

override

Definition at line 119 of file scientificspinbox.cpp.

{
    double new_val = round(m_value + m_step * steps, m_decimals);
    if (inRange(new_val))
        setValue(new_val);
}

References inRange(), m_decimals, m_step, m_value, round(), and setValue().

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stepEnabled()

QAbstractSpinBox::StepEnabled ScientificSpinBox::stepEnabled ( ) const

overrideprotected

Definition at line 153 of file scientificspinbox.cpp.

{
    return isReadOnly() ? StepNone : StepUpEnabled | StepDownEnabled;
}

toDouble()

double ScientificSpinBox::toDouble ( QString  text, const QDoubleValidator &  validator, double  min, double  max, double  default_value  )

static

Definition at line 134 of file scientificspinbox.cpp.

{
    int pos = 0;
    if (validator.validate(text, pos) == QValidator::Acceptable) {
        double new_val = validator.locale().toDouble(text);
        if (std::abs(new_val) < min_val)
            new_val = 0.0;
        return new_val >= min && new_val <= max ? new_val : default_value;
    }
    return default_value;
}

Referenced by TEST_F(), updateValue(), and value().

toString()

QString ScientificSpinBox::toString ( double  val, int  decimal_points  )

static

Definition at line 126 of file scientificspinbox.cpp.

{
    QString result = useExponentialNotation(val) ? QString::number(val, 'e', decimal_points)
                                                 : QString::number(val, 'f', decimal_points);
 
    return result.replace(QRegExp("(\\.?0+)?((e{1}[\\+|-]{1})(0+)?([1-9]{1}.*))?$"), "\\3\\5");
}

Referenced by ModelView::DefaultCellDecorator::cellText(), TEST_F(), and updateText().

updateText()

void ScientificSpinBox::updateText ( )

private

Definition at line 158 of file scientificspinbox.cpp.

{
    QString new_text = toString(m_value, m_decimals);
    if (new_text != text())
        lineEdit()->setText(new_text);
}

References m_decimals, m_value, and toString().

Referenced by setValue().

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updateValue()

void ScientificSpinBox::updateValue ( )

private

Definition at line 66 of file scientificspinbox.cpp.

{
    double new_val = toDouble(text(), m_validator, m_min, m_max, m_value);
    setValue(new_val);
}

References m_max, m_min, m_validator, m_value, setValue(), and toDouble().

Referenced by ScientificSpinBox().

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validate()

QValidator::State ModelView::ScientificSpinBox::validate ( QString &  , int &    ) const

inlineoverride

Definition at line 47 of file scientificspinbox.h.

{ return QValidator::Acceptable; }

value()

double ScientificSpinBox::value

(

)

const

Definition at line 50 of file scientificspinbox.cpp.

{
    // return last acceptable input (required for the proper focus-out behaviour)
    double val = toDouble(text(), m_validator, m_min, m_max, m_value);
    return round(val, m_decimals);
}

References m_decimals, m_max, m_min, m_validator, m_value, round(), and toDouble().

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valueChanged

void ModelView::ScientificSpinBox::valueChanged ( double  value )

signal

Referenced by ModelView::ScientificSpinBoxEditor::ScientificSpinBoxEditor(), and setValue().

Member Data Documentation

m_decimals

int ModelView::ScientificSpinBox::m_decimals

private

Definition at line 68 of file scientificspinbox.h.

Referenced by decimals(), setDecimals(), setValue(), stepBy(), updateText(), and value().

m_max

double ModelView::ScientificSpinBox::m_max

private

Definition at line 66 of file scientificspinbox.h.

Referenced by inRange(), maximum(), setMaximum(), updateValue(), and value().

m_min

double ModelView::ScientificSpinBox::m_min

private

Definition at line 66 of file scientificspinbox.h.

Referenced by inRange(), minimum(), setMinimum(), updateValue(), and value().

m_step

double ModelView::ScientificSpinBox::m_step

private

Definition at line 67 of file scientificspinbox.h.

Referenced by setSingleStep(), singleStep(), and stepBy().

m_validator

QDoubleValidator ModelView::ScientificSpinBox::m_validator

private

Definition at line 69 of file scientificspinbox.h.

Referenced by ScientificSpinBox(), updateValue(), and value().

m_value

double ModelView::ScientificSpinBox::m_value

private

Definition at line 66 of file scientificspinbox.h.

Referenced by setDecimals(), setMaximum(), setMinimum(), setValue(), stepBy(), updateText(), updateValue(), and value().

Property Documentation

value

double ModelView::ScientificSpinBox::value

readwrite

Definition at line 1 of file scientificspinbox.h.

Referenced by ModelView::ScientificSpinBoxEditor::onEditingFinished().

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

• /home/www/ba/mvvm/viewmodel/mvvm/editors/scientificspinbox.h
• /home/www/ba/mvvm/viewmodel/mvvm/editors/scientificspinbox.cpp