gpsposition.h

SYMBIAN GPS NMEA协议实现

/************************************************************************/
/* Bluteooth Test           The.Berlin.Factor                 Juni 2003 */
/************************************************************************/

#ifndef __TGpsPosition_H__
#define __TGpsPosition_H__

#include <E32Base.h>



class TGpsPosition : public CBase {

public:

	TGpsPosition( );

	TGpsPosition( const TReal & aLongitude, const TReal & aLatitude );

	TGpsPosition( const TGpsPosition & aGpsPosition );

	void Reset( );


public:

	void Set( const TReal & aLongitude, const TReal & aLatitude );

	void Set( const TGpsPosition & aGpsPosition );


public:

	// Sets extended information on the contained GPS position. This should
	// be called AFTER the position is initialized. Then the #aValidFixFlag
	// will be returned upon calls to #IsValid.
	void SetExtendedInfo( TBool aValidFixFlag, TInt aNumberOfSatellites, const TReal & aHdop );

	// Extends the position data with time infos. #aUtcTime should be given
	// in the NMEA format "hhmmss.dd".
	void SetTimeInfo( const TReal & aUtcTime, TUint aTickCount );

	void SetCourseData( const TReal & aHeading, const TReal & aSpeedInKnots, TBool aValidFlag );


public:

	const TReal & Longitude( ) const;

	const TReal & Latitude( ) const;


public:

	TInt Satellites( ) const;

	const TReal & Hdop( ) const;


public:

	const TReal & UtcTime( ) const;

	TUint TickCount( ) const;


public:

	const TReal & Heading( ) const;

	const TReal & SpeedInKnots( ) const;

	const TReal SpeedInKmh( ) const;

	TBool CourseDataValid( ) const;


public:

	const TReal & Wgs84Longitude( ) const;

	const TReal & Wgs84Latitude( ) const;

	TBool IsValid( ) const;


public:

	const TDesC & ToStringL( ) const;


protected:

	void ValidatePosition( );


private:

	/* Position data first. */

	TReal iLongitude;

	TReal iLatitude;

	TBool iPositionDataValid;


private:

	/* Accurracy data next. */

	TInt iNumberOfSatellites;

	TReal iHdop;


private:

	/* Timing data. */

	TReal iUtcTime;

	TUint iTickCount;


private:

	/* Course data. */

	TReal iHeading;

	TReal iSpeedInKnots;

	TBool iCourseDataValid;

};

#endif