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#include "adaptivedoublespinbox.h"
#include <cmath>
AdaptiveDoubleSpinBox::AdaptiveDoubleSpinBox(QWidget *parent)
: QDoubleSpinBox(parent)
{
}
void AdaptiveDoubleSpinBox::stepBy(int steps)
{
const double oldValue = value();
const double oldAbsValue = qAbs(oldValue);
const double oldStep = std::pow(10, std::floor(std::log10(oldAbsValue)));
const double newValueWithOldStep = oldValue + steps * oldStep;
const double newAbsValueWithOldStep = qAbs(newValueWithOldStep);
const double newStep = std::pow(10, std::floor(std::log10(newAbsValueWithOldStep)));
if (newStep < oldStep) {
if (oldAbsValue != oldStep) {
setValue(oldStep);
} else {
setValue(oldValue + steps * (oldStep / 10));
}
} else {
setValue(newValueWithOldStep);
}
}
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