mapinfofile.h

linux下一款GIS程序源码

// mapinfofile.h: interface for the MapInfoFile class.
//
/*---------------------------------------------------------------------
 *                      class MapInfoFile
 *
 * Virtual base class for the TABFile class.
 *
 * This is the definition of the public interface methods that should
 * be available for any type of MapInfo dataset.
 *--------------------------------------------------------------------*/

#ifndef  MapInfoFile_H
#define  MapInfoFile_H

#include "ugklayer.h"

#include "tabfeature.h"



class MapInfoFile : public UGKLayer  
{
protected:
	int                 m_nCurFeatureId;
	TABFeature          *m_poCurFeature;
	UGKBool               m_bBoundsSet;

public:
	MapInfoFile();
	virtual ~MapInfoFile();

	virtual TABFileClass GetFileClass() {return TABFC_MapInfoFile;}
	
	virtual int Open(const char *pszFname, const char *pszAccess,
                     UGKBool bTestOpenNoError = FALSE ) = 0;
	virtual int Close() = 0;

	virtual const char *GetTableName() = 0;

    ///////////////
    // Static method to detect file type, create an object to read that
    // file and open it.
     static MapInfoFile *SmartOpen(const char *pszFname,
                                   UGKBool bTestOpenNoError = FALSE);

	virtual void        ResetReading() = 0;
	virtual int         GetFeatureCount (int bForce) = 0;
	virtual UGKFeature *GetNextFeature();
	virtual UGKFeature *GetFeature(long nFeatureId);
	virtual UGKErr      CreateFeature(UGKFeature *poFeature);
	virtual int         TestCapability( const char * pszCap ) =0;
	virtual int         GetExtent(UGKEnvelope *psExtent, int bForce) =0;

    ///////////////
    // Read access specific stuff
    //
	virtual int GetNextFeatureId(int nPrevId) = 0;
	virtual TABFeature *GetFeatureRef(int nFeatureId) = 0;
	virtual UGKFeatureDefn *GetLayerDefn() = 0;

	virtual TABFieldType GetNativeFieldType(int nFieldId) = 0;

    virtual int GetBounds(double &dXMin, double &dYMin, 
                          double &dXMax, double &dYMax,
                          UGKBool bForce = TRUE ) = 0;

    virtual int GetFeatureCountByType(int &numPoints, int &numLines,
                                      int &numRegions, int &numTexts,
                                      UGKBool bForce = TRUE ) = 0;
	
	virtual UGKBool IsFieldIndexed(int nFieldId) = 0;
	virtual UGKBool IsFieldUnique(int nFieldId) = 0;

    ///////////////
    // Write access specific stuff
    //
	UGKBool       IsBoundsSet()            {return m_bBoundsSet;}
    virtual int SetBounds(double dXMin, double dYMin, 
                          double dXMax, double dYMax) = 0;
    virtual int SetFeatureDefn(UGKFeatureDefn *poFeatureDefn,
                            TABFieldType *paeMapInfoNativeFieldTypes = NULL)=0;
    virtual int AddFieldNative(const char *pszName, TABFieldType eMapInfoType,
                               int nWidth=0, int nPrecision=0,
                               UGKBool bIndexed=FALSE, UGKBool bUnique=FALSE) = 0;
	virtual UGKErr CreateField( UGKFieldDefn *poField, int bApproxOK = TRUE );

	
	virtual int SetFeature(TABFeature *poFeature, int nFeatureId = -1) = 0;
	virtual int SetFieldIndexed(int nFieldId) = 0;

	virtual int  GetProjInfo(TABProjInfo *poPI) = 0;
	virtual int  SetProjInfo(TABProjInfo *poPI) = 0;
	virtual int  SetMIFCoordSys(const char *pszMIFCoordSys) = 0;


};



#endif