CUnitSpeed.hpp

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// INDENTING (emacs/vi): -*- mode:c++; tab-width:2; c-basic-offset:2; intent-tabs-mode:nil; -*- ex: set tabstop=2 expandtab:
 
/*
 * Qt Virtual Chart Table (QVCT)
 * Copyright (C) 2012 Cedric Dufour <http://cedric.dufour.name>
 * Author: Cedric Dufour <http://cedric.dufour.name>
 *
 * The Qt Virtual Chart Table (QVCT) 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, Version 3.
 *
 * The Qt Virtual Chart Table (QVCT) is distributed in the hope
 * that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * See the GNU General Public License for more details.
 */
 
#ifndef QVCT_CUNITSPEED_HPP
#define QVCT_CUNITSPEED_HPP
 
// QT
#include <QMap>
#include <QString>
 
// QVCT
class CUnitSpeedSymbols; // see below
class CUnitSpeedCodes; // see below
 
 
 
class CUnitSpeed
{
 
  //------------------------------------------------------------------------------
  // CONSTANTS / STATIC
  //------------------------------------------------------------------------------
 
public:
  enum EUnit {
    M_S,      
    KM_H,     
    MI_H,     
    KT,       
    UNDEFINED 
  };
 
private:
  static const CUnitSpeedSymbols oUnitSpeedSymbols;
  static const CUnitSpeedCodes oUnitSpeedCodes;
 
public:
  static const QMap<EUnit,QString> &symbols();
  static QString toSymbol( EUnit _eUnit );
  static EUnit fromSymbol( const QString& _rqsSymbol );
  static const QMap<EUnit,QString> &codes();
  static QString toCode( EUnit _eUnit );
  static EUnit fromCode( const QString& _rqsCode );
  static double toValue( double _fdValue, EUnit _eUnit );
  static QString toString( double _fdValue, EUnit _eUnit, int _iPrecision = 0 );
  static QString toString( double _fdValue );
 
  static double fromString( const QString& _rqString, EUnit _eUnit, bool* _pbOK = 0 );
  static double fromString( const QString& _rqString, bool* _pbOK = 0 );
 
};
 
class CUnitSpeedSymbols
{
  friend class CUnitSpeed;
 
  //------------------------------------------------------------------------------
  // CONSTRUCTORS / DESTRUCTOR
  //------------------------------------------------------------------------------
 
private:
  CUnitSpeedSymbols()
  {
    qMapSymbols.insert( CUnitSpeed::M_S, "m/s" );
    qMapSymbols.insert( CUnitSpeed::KM_H, "km/h" );
    qMapSymbols.insert( CUnitSpeed::MI_H, "mph" );
    qMapSymbols.insert( CUnitSpeed::KT, "kt" );
  };
  QMap<CUnitSpeed::EUnit,QString> qMapSymbols;
};
 
class CUnitSpeedCodes
{
  friend class CUnitSpeed;
 
  //------------------------------------------------------------------------------
  // CONSTRUCTORS / DESTRUCTOR
  //------------------------------------------------------------------------------
 
private:
  CUnitSpeedCodes()
  {
    qMapCodes.insert( CUnitSpeed::M_S, "m_s" );
    qMapCodes.insert( CUnitSpeed::KM_H, "km_h" );
    qMapCodes.insert( CUnitSpeed::MI_H, "mi_h" );
    qMapCodes.insert( CUnitSpeed::KT, "kt" );
  };
  QMap<CUnitSpeed::EUnit,QString> qMapCodes;
};
 
#endif // QVCT_CUNITSPEED_HPP