CUnitDistance.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_CUNITDISTANCE_HPP
#define QVCT_CUNITDISTANCE_HPP
 
// QT
#include <QMap>
#include <QString>
 
// QVCT
class CUnitDistanceSymbols; // see below
 
 
 
class CUnitDistance
{
 
  //------------------------------------------------------------------------------
  // CONSTANTS / STATIC
  //------------------------------------------------------------------------------
 
public:
  enum EUnit {
    M,        
    KM,       
    FT,       
    MI,       
    NM,       
    UNDEFINED 
  };
 
private:
  static const CUnitDistanceSymbols oUnitDistanceSymbols;
 
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 = UNDEFINED, bool* _pbOK = 0 );
  static double fromString( const QString& _rqString, bool* _pbOK = 0 );
 
};
 
class CUnitDistanceSymbols
{
  friend class CUnitDistance;
 
  //------------------------------------------------------------------------------
  // CONSTRUCTORS / DESTRUCTOR
  //------------------------------------------------------------------------------
 
private:
  CUnitDistanceSymbols()
  {
    qMapSymbols.insert( CUnitDistance::M, "m" );
    qMapSymbols.insert( CUnitDistance::KM, "km" );
    qMapSymbols.insert( CUnitDistance::FT, "ft" );
    qMapSymbols.insert( CUnitDistance::MI, "mi" );
    qMapSymbols.insert( CUnitDistance::NM, "nm" );
  };
  QMap<CUnitDistance::EUnit,QString> qMapSymbols;
};
 
#endif // QVCT_CUNITDISTANCE_HPP