FrequencySpinBox.h

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#ifndef FREQUENCYSPINBOX_H
#define FREQUENCYSPINBOX_H

#include <QWidget>

namespace Ui {
    class FrequencySpinBox;
}

class FrequencySpinBox : public QWidget
{
    Q_OBJECT
public:
    FrequencySpinBox(QWidget *parent = 0);
    ~FrequencySpinBox();
    double value() const;
    enum Unit {
      Hz,
      Rad
    };
    void setDisplayUnit(FrequencySpinBox::Unit u);
    FrequencySpinBox::Unit displayUnit() const;

signals:
    void valueChanged(double d);

public slots:
    void setValue(double val);

private slots:
    void emitNewValue();
    void updateNumberAndPrefix();

private:
    Ui::FrequencySpinBox *ui;
    qreal val;
};

#endif // FREQUENCYSPINBOX_H