File indexing completed on 2024-12-08 08:10:25

 /***************************************************************************
  *   Copyright (C) 2003-2006 by David Saxton                               *
  *   david@bluehaze.org                                                    *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
  *   it under the terms of the GNU General Public License as published by  *
  *   the Free Software Foundation; either version 2 of the License, or     *
  *   (at your option) any later version.                                   *
  ***************************************************************************/
 
 #include "doublespinbox.h"
 #include "cnitem.h"
 
 #include <KLocalizedString>
 
 #include <QDebug>
 #include <QLineEdit>
 #include <QLocale>
 #include <QLoggingCategory>
 #include <QRegExp>
 #include <QTimer>
 
 #include <algorithm>
 #include <cmath>
 
 using namespace std;
 
 Q_LOGGING_CATEGORY(KTL_DOUBLESPINBOX_LOG, "org.kde.ktechlab.doublespinbox", QtWarningMsg)
 
 inline int roundDouble(double val)
 {
     return (val > 0) ? int(val + 0.5) : int(val - 0.5);
 }
 
 DoubleSpinBox::DoubleSpinBox(double lower, double upper, double minAbs, double value, const QString &unit, QWidget *parent)
     : QDoubleSpinBox(parent)
 {
     qCDebug(KTL_DOUBLESPINBOX_LOG) << " lower=" << lower << " upper=" << upper << " minAbs=" << minAbs << " value=" << value << " unit=" << unit << " parent=" << parent;
 
     setDecimals(20); // should be enough
 
     //  m_lastEmittedValue = value;
     m_unit = unit;
     //  m_minValue = lower;
     setMinimum(lower);
     //  m_maxValue = upper;
     setMaximum(upper);
     m_minAbsValue = minAbs;
     //  m_queuedSuffix = QString();
 
     init();
     setValue(value);
 }
 
 DoubleSpinBox::DoubleSpinBox(QWidget *parent)
     : QDoubleSpinBox(parent)
 {
     setDecimals(20); // should be enough
 
     m_lastEmittedValue = 0;
     //  m_minValue = 0;
     setMinimum(0);
     //  m_maxValue = 1e9;
     setMaximum(1e9);
     m_minAbsValue = 1e-9;
     //  m_queuedSuffix = QString();
 
     init();
     setValue(0);
 }
 
 void DoubleSpinBox::init()
 {
     lineEdit()->setAlignment(Qt::AlignRight);
 
     //  connect( this, SIGNAL(valueChanged(double)), this, SLOT(checkIfChanged()) );
     //  QSpinBox::setMinValue( -(1<<30) );
     //  QSpinBox::setMaxValue( +(1<<30) );
 
     // setValidator( 0 ); // apparently in Qt4 there is no validator
 }
 
 DoubleSpinBox::~DoubleSpinBox()
 {
 }
 
 QValidator::State DoubleSpinBox::validate(QString &text, int &pos) const
 {
     qCDebug(KTL_DOUBLESPINBOX_LOG) << "text = |" << text << "| pos= " << pos;
     return QValidator::Acceptable; // QValidator::Intermediate; // don't bother
 }
 
 // double DoubleSpinBox::value()
 // {
 //     const double mult = getMult();
 //     const double displatedNumber = getDisplayedNumber( 0 );
 //     const double toRet = displatedNumber * mult ;
 //     qCDebug(KTL_DOUBLESPINBOX_LOG) << "value() mult = " << mult;
 //     qCDebug(KTL_DOUBLESPINBOX_LOG) << "value() displatedNumber = " << displatedNumber;
 //     qCDebug(KTL_DOUBLESPINBOX_LOG) << "value() toRet = " << toRet;
 //  return toRet;
 // }
 
 // void DoubleSpinBox::setValue( double value )
 // {
 //  if ( this->value() == value )
 //      return;
 //
 //  if ( value > maxValue() )
 //      value = maxValue();
 //
 //  else if ( value < minValue() )
 //      value = minValue();
 //
 //  if ( std::abs(value) < m_minAbsValue*0.9999 )
 //      value = 0.0;
 //
 //  updateSuffix( value );
 //
 //     const int toBeStoredValue = roundDouble( (value / Item::getMultiplier( value )) /* * 100 */ );
 //
 //     qCDebug(KTL_DOUBLESPINBOX_LOG) << "value = " << value;
 //     qCDebug(KTL_DOUBLESPINBOX_LOG) << "value() = " << QSpinBox::value();
 //     qCDebug(KTL_DOUBLESPINBOX_LOG) << "to be stored = " << toBeStoredValue;
 //
 //  QSpinBox::setValue( toBeStoredValue );
 // }
 
 // void DoubleSpinBox::setUnit( const QString & unit )
 // {
 //  updateSuffix( value() );
 //  m_unit = unit;
 // }
 
 void DoubleSpinBox::updateSuffix(double value)
 {
     QString nextSuffix = " " + CNItem::getNumberMag(value) + m_unit;
     setSuffix(nextSuffix);
     //  m_queuedSuffix = " " + CNItem::getNumberMag( value ) + m_unit;
     //
     //  Set suffix to be empty if it is nothing but white space
     //  if ( m_queuedSuffix.trimmed().isEmpty() )
     //      m_queuedSuffix = "";
     //
     //  QTimer::singleShot( 0, this, SLOT(setQueuedSuffix()) );
 }
 
 // void DoubleSpinBox::setQueuedSuffix()
 // {
 //  bool changed = false;
 //  if ( !m_queuedSuffix.isNull() && suffix().simplifyWhiteSpace() != m_queuedSuffix.simplifyWhiteSpace() )
 //  {
 //      setSuffix( m_queuedSuffix );
 //      changed = true;
 //  }
 //  m_queuedSuffix = QString();
 //
 //  if ( changed )
 //      emit valueChanged( value() );
 // }
 
 DoubleSpinBox::StepEnabled DoubleSpinBox::stepEnabled() const
 {
     return QDoubleSpinBox::StepDownEnabled | QDoubleSpinBox::StepUpEnabled;
 }
 
 void DoubleSpinBox::stepBy(int steps)
 {
     double workVal = value();
     while (steps != 0) {
         if (steps > 0) {
             workVal = getNextUpStepValue(workVal);
             steps--;
         } else {
             workVal = getNextDownStepValue(workVal);
             steps++;
         }
     }
     setValue(workVal);
 }
 
 double DoubleSpinBox::getNextUpStepValue(double in)
 {
     qCDebug(KTL_DOUBLESPINBOX_LOG) << " in = " << in;
 
     double value = roundToOneSF(in);
 
     if (value == 0) {
         value = m_minAbsValue;
     } else if (value > 0) {
         value += std::pow(10., std::floor(std::log10(value)));
     } else {
         double sub = std::pow(10., std::floor(std::log10(std::abs(value)) - 1));
         value += std::pow(10., std::floor(std::log10(std::abs(value) - sub)));
     }
 
     value *= 1.00001;
 
     if (std::abs(value) < m_minAbsValue) {
         value = 0.;
     }
 
     qCDebug(KTL_DOUBLESPINBOX_LOG) << " out = " << value;
     return value;
 }
 
 double DoubleSpinBox::getNextDownStepValue(double in)
 {
     qCDebug(KTL_DOUBLESPINBOX_LOG) << " in = " << in;
 
     double value = roundToOneSF(in);
 
     if (value == 0) {
         value = -m_minAbsValue;
     } else if (value > 0) {
         double sub = std::pow(10., std::floor(std::log10(value) - 1));
         value -= std::pow(10., std::floor(std::log10(value - sub)));
     } else {
         double add = std::pow(10., std::floor(std::log10(std::abs(value)) - 1));
         value -= std::pow(10., std::floor(std::log10(std::abs(value) + add)));
     }
 
     value *= 1.00001;
 
     if (std::abs(value) < m_minAbsValue) {
         value = 0.;
     }
 
     qCDebug(KTL_DOUBLESPINBOX_LOG) << " out = " << value;
 
     return value;
 }
 
 // double DoubleSpinBox::getMult()
 // {
 //  QString text = this->text().trimmed();
 //  if ( !m_queuedSuffix.isNull() )
 //  {
 //      QString nsSuffix = suffix().trimmed();
 //
 //      if ( nsSuffix.isEmpty() )
 //          text.append( m_queuedSuffix );
 //      else
 //          text.replace( nsSuffix, m_queuedSuffix );
 //  }
 //
 //  if ( text.length() == 0 )
 //      return 1.0;
 //
 //  if ( text.endsWith( m_unit, false ) )
 //      text = text.remove( text.length() - m_unit.length(), m_unit.length() );
 //
 //  text.trimmed();
 //
 //  QChar siExp = text[ text.length()-1 ];
 //
 //  if ( siExp.isLetter() || siExp.isSymbol() )
 //      return CNItem::getMultiplier((QString)siExp);
 //
 //  else
 //      return 1;
 // }
 
 // double DoubleSpinBox::getDisplayedNumber( bool * ok )
 // {
 //  KLocale * locale = KGlobal::locale();
 //
 //  //Fetch the characters that we don't want to discard
 //  const QString exclude = locale->decimalSymbol()
 //          + locale->thousandsSeparator()
 //          + locale->positiveSign()
 //          + locale->negativeSign();
 //
 //  QString number = cleanText().remove( QRegExp("[^"+exclude+"\\d]") );
 //
 //  return locale->readNumber( number, ok );
 // }
 
 // int DoubleSpinBox::mapTextToValue( bool * ok )
 // {
 //  (void)ok;
 //
 //  double value = this->value();
 //
 //  if ( value > maxValue() )
 //      value = maxValue();
 //
 //  else if ( value < minValue() )
 //      value = minValue();
 //
 //  if ( std::abs(value) < m_minAbsValue*0.9999 )
 //      value = 0.0;
 //
 //  updateSuffix( value );
 //
 //  value /= Item::getMultiplier( value );
 //
 //  Precision of 2 extra digits
 //  return int( value /* * 100 */ );
 // }
 //
 
 double DoubleSpinBox::valueFromText(const QString &text) const
 {
     qCDebug(KTL_DOUBLESPINBOX_LOG) << "text = " << text;
 
     QLocale locale;
 
     // Fetch the characters that we don't want to discard
     const QString exclude = QString(locale.decimalPoint()) + locale.groupSeparator() + locale.positiveSign() + locale.negativeSign();
 
     QString textToStrip(text);
     QString numberToRead = textToStrip.remove(QRegExp("[^" + exclude + "\\d]"));
 
     bool ok;
     double value = locale.toDouble(numberToRead, &ok);
     if (!ok) {
         qCDebug(KTL_DOUBLESPINBOX_LOG) << "numberToRead = |" << numberToRead << "| NOT OK";
         value = 0;
     }
     qCDebug(KTL_DOUBLESPINBOX_LOG) << "numberToRead = " << numberToRead << ", value = " << value;
 
     if (value > maximum()) {
         value = maximum();
     } else if (value < minimum()) {
         value = minimum();
     }
 
     if (std::abs(value) < m_minAbsValue * 0.9999) {
         value = 0.0;
     }
 
     double multiplier = 1.0;
     // updateSuffix( value );
     QString textForSuffix(text);
 
     if (textForSuffix.length() != 0) {
         if (textForSuffix.endsWith(m_unit, Qt::CaseInsensitive)) {
             textForSuffix = textForSuffix.remove(textForSuffix.length() - m_unit.length(), m_unit.length());
         }
 
         textForSuffix = textForSuffix.trimmed();
 
         QChar siExp;
         if (textForSuffix.length() > 0) {
             siExp = textForSuffix[textForSuffix.length() - 1];
         } else {
             siExp = '1';
         }
 
         qCDebug(KTL_DOUBLESPINBOX_LOG) << "SI exp = " << siExp;
 
         if (siExp.isLetter() || siExp.isSymbol()) {
             multiplier = CNItem::getMultiplier(QString(siExp));
         } else {
             multiplier = 1;
         }
     }
     qCDebug(KTL_DOUBLESPINBOX_LOG) << "multiplier = " << multiplier;
 
     // value /= Item::getMultiplier( value );
     value *= multiplier;
 
     qCDebug(KTL_DOUBLESPINBOX_LOG) << "value = " << value;
 
     return value;
 }
 
 //
 // QString DoubleSpinBox::mapValueToText( int v )
 // {
 //  double val = double(v) /* /100.0 */;
 //
 //  int leftDigits = (int)floor( log10( abs(val) ) ) + 1;
 //  if ( leftDigits < 0 )
 //      leftDigits = 0;
 //  else if ( leftDigits > 3 )
 //      leftDigits = 3;
 //
 //  KLocale * locale = KGlobal::locale();
 //  return locale->formatNumber( val, 3-leftDigits );
 // }
 
 QString DoubleSpinBox::textFromValue(double value) const
 {
     qCDebug(KTL_DOUBLESPINBOX_LOG) << " value = " << value;
 
     //     int leftDigits = (int)floor( log10( abs( value ) ) ) + 1;
     //     if ( leftDigits < 0 ) {
     //         leftDigits = 0;
     //     } else if ( leftDigits > 3 ) {
     //         leftDigits = 3;
     //     }
     double multiplier = Item::getMultiplier(value);
 
     double toDisplayNr = value / multiplier;
 
     qCDebug(KTL_DOUBLESPINBOX_LOG) << "toDisplayNr = " << toDisplayNr;
 
     QString numberStr = QLocale().toString(toDisplayNr, 'f', 0 /* 3-leftDigits */);
 
     QString magStr = Item::getNumberMag(value);
 
     QString toRet = numberStr + " " + magStr + m_unit;
 
     qCDebug(KTL_DOUBLESPINBOX_LOG) << " text = " << toRet;
     return toRet;
 }
 
 // void DoubleSpinBox::checkIfChanged()
 // {
 //  double newValue = value();
 //
 //  if ( m_lastEmittedValue == newValue )
 //      return;
 //
 //  m_lastEmittedValue = newValue;
 //  emit valueChanged( m_lastEmittedValue );
 // }
 
 double DoubleSpinBox::roundToOneSF(double value)
 {
     if (value == 0.0)
         return 0.0;
 
     value *= 1.000001;
     double tens = pow(10.0, floor(log10(abs(value))));
 
     return int(value / tens) * tens;
 }
 
 // void DoubleSpinBox::stepUp()
 // {
 //  double value = roundToOneSF( this->value() );
 //
 //  if ( value == 0 )
 //      value = m_minAbsValue;
 //
 //  else if ( value > 0 )
 //      value += std::pow( 10., std::floor( std::log10(value) ) );
 //
 //  else
 //  {
 //      double sub = std::pow(10., std::floor( std::log10(std::abs(value))-1) );
 //      value += std::pow( 10., std::floor( std::log10(std::abs(value)-sub) ) );
 //  }
 //
 //  value *= 1.00001;
 //
 //  if ( std::abs(value) < m_minAbsValue )
 //      value = 0.;
 //
 //  setValue( value );
 // }
 
 // void DoubleSpinBox::stepDown()
 // {
 //  double value = roundToOneSF( this->value() );
 //
 //  if ( value == 0 )
 //      value = -m_minAbsValue;
 //
 //  else if ( value > 0 )
 //  {
 //      double sub = std::pow(10., std::floor( std::log10(value)-1) );
 //      value -= std::pow( 10., std::floor( std::log10(value-sub) ) );
 //  }
 //  else
 //  {
 //      double add = std::pow(10., std::floor( std::log10(std::abs(value))-1) );
 //      value -= std::pow( 10., std::floor( std::log10(std::abs(value)+add) ) );
 //  }
 //
 //  value *= 1.00001;
 //
 //  if ( std::abs(value) < m_minAbsValue )
 //      value = 0.;
 //
 //  setValue( value );
 // }
 
 #include "moc_doublespinbox.cpp"