QtLessAnnoyingDoubleSpinBox.cc

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//=============================================================================
//
//  CLASS QtLessAnnoyingQDoubleSpinBox
//
//=============================================================================


#include "QtLessAnnoyingDoubleSpinBox.hh"
#include <cmath>


QtLessAnnoyingDoubleSpinBox::QtLessAnnoyingDoubleSpinBox(QWidget* _qwidget ) : QDoubleSpinBox(_qwidget)
{
}

QValidator::State QtLessAnnoyingDoubleSpinBox::validate(QString& text, int&) const
{
  QString copy = strip_prefix_suffix(text) + "0";

  bool ok;
  copy.toDouble(&ok);
  if ( ok )
    return QValidator::Acceptable;
  else
    return QValidator::Invalid;
}

double QtLessAnnoyingDoubleSpinBox::valueFromText(const QString &text) const
{
  QString copy = strip_prefix_suffix(text);

  bool ok;
  double value = copy.toDouble(&ok);

  double factor = std::pow(10.0, decimals() );
  value = double( long(value * double(factor) + 0.5) ) / factor;

  if ( !ok )
    return 0;

  return value;
}

QString QtLessAnnoyingDoubleSpinBox::strip_prefix_suffix(const QString& text) const
{
  int lenpre = prefix().length();
  int lensuf = suffix().length();

  return text.mid( lenpre, text.length() - lenpre -lensuf ).simplified();
}