// Janek Kozicki 2007 - a small example of using units with QT4 GUI

#ifndef CALCULATORFORM_H
#define CALCULATORFORM_H

#include <boost/units/systems/cgs/force.hpp>
#include <boost/units/systems/cgs/mass.hpp>
#include <boost/units/systems/cgs/acceleration.hpp>

#include <boost/units/systems/si/force.hpp>
#include <boost/units/systems/si/mass.hpp>
#include <boost/units/systems/si/acceleration.hpp>
#include <boost/units/systems/si/length.hpp>
#include <boost/units/systems/si/time.hpp>

#include <QWidget>

class QLabel;
class QDoubleSpinBox;
class QComboBox;

class CalculatorForm : public QWidget
{
    Q_OBJECT

public:
    CalculatorForm(QWidget *parent = 0);

private slots:
    void calc();

private:
    double mass_factor();
    double acc_factor();
    double force_factor();

    boost::units::quantity<boost::units::SI::force> newtons_law(const boost::units::quantity<boost::units::SI::mass>& m, const boost::units::quantity<boost::units::SI::acceleration>& a);

    QComboBox *acc_unit_box,*mass_unit_box,*force_unit_box;
    QDoubleSpinBox *acc_input,*mass_input;
    QLabel *force_txt;
};

#endif