tabmapfile.h

linux下一款GIS程序源码

// tabmapfile.h: interface for the TABMAPFile class.
//
//////////////////////////////////////////////////////////////////////

#ifndef  TABMAPFile_H
#define  TABMAPFile_H

#include "tabbinblockmanager.h"
#include "tabmapheaderblock.h"
#include "tabmapindexblock.h"
#include "tabidfile.h"
#include "tabmapobjectblock.h"
#include "tabmapcoordblock.h"
#include "tabtooldeftable.h"

class TABMAPFile  
{
private:
    int         m_nMinTABVersion;
    char        *m_pszFname;
    FILE        *m_fp;
    TABAccess   m_eAccessMode;

    TABBinBlockManager m_oBlockManager;

    TABMAPHeaderBlock   *m_poHeader;  //头块

    // Members used to access objects using the spatial index
    TABMAPIndexBlock  *m_poSpIndex;   //索引块

    // Member used to access objects using the object ids (.ID file)
    TABIDFile   *m_poIdIndex;

    // Current object data block.
    TABMAPObjectBlock *m_poCurObjBlock;  //对象块
    int         m_nCurObjPtr;
    int         m_nCurObjType;
    int         m_nCurObjId;
    TABMAPCoordBlock *m_poCurCoordBlock;  //坐标块

    // Drawing Tool Def. table (takes care of all drawing tools in memory)
    TABToolDefTable *m_poToolDefTable;

    // Coordinates filter... default is MBR of the whole file
    TABVertex   m_sMinFilter;
    TABVertex   m_sMaxFilter;
    UGKInt32      m_XMinFilter;
    UGKInt32      m_YMinFilter;
    UGKInt32      m_XMaxFilter;
    UGKInt32      m_YMaxFilter;

    int         CommitObjBlock(UGKBool bInitNewBlock =TRUE);

    int         CommitDrawingTools();

    int         CommitSpatialIndex();

    // Stuff related to traversing spatial index.
    TABMAPIndexBlock *m_poSpIndexLeaf;   //索引块

    int         LoadNextMatchingObjectBlock(int bFirstObject);
    TABRawBinBlock *PushBlock( int nFileOffset );
public:
	TABMAPFile();
	virtual ~TABMAPFile();

    int         Open(const char *pszFname, const char *pszAccess,
                     UGKBool bNoErrorMsg = FALSE );
    int         Close();

    int         Int2Coordsys(UGKInt32 nX, UGKInt32 nY, double &dX, double &dY);
    int         Coordsys2Int(double dX, double dY, UGKInt32 &nX, UGKInt32 &nY, 
                             UGKBool bIgnoreOveflow=FALSE);
    int         Int2CoordsysDist(UGKInt32 nX, UGKInt32 nY, double &dX, double &dY);
    int         Coordsys2IntDist(double dX, double dY, UGKInt32 &nX, UGKInt32 &nY);
    void        SetCoordFilter(TABVertex sMin, TABVertex sMax);
    void        GetCoordFilter(TABVertex &sMin, TABVertex &sMax);
    void        ResetCoordFilter();
    int         SetCoordsysBounds(double dXMin, double dYMin, 
                                  double dXMax, double dYMax);

    UGKInt32      GetMaxObjId();
    int         MoveToObjId(int nObjId);
    int         PrepareNewObj(int nObjId, UGKByte nObjType);

    void        ResetReading();
    int         GetNextFeatureId( int nPrevId );

    int         GetCurObjType();
    int         GetCurObjId();
    TABMAPObjectBlock *GetCurObjBlock();
    TABMAPCoordBlock  *GetCurCoordBlock();
    TABMAPCoordBlock  *GetCoordBlock(int nFileOffset);
    TABMAPHeaderBlock *GetHeaderBlock();
    TABIDFile         *GetIDFileRef();
    TABRawBinBlock    *GetIndexObjectBlock(int nFileOffset);

    int         InitDrawingTools(); //MODIFY -ZGQ 06/03/16 由原来的private 变为 public
    TABToolDefTable * GetToolDefTableRef(){return m_poToolDefTable;} //ADD-ZGQ 06/03/15
    int         ReadPenDef(int nPenIndex, TABPenDef *psDef);
    int         ReadBrushDef(int nBrushIndex, TABBrushDef *psDef);
    int         ReadFontDef(int nFontIndex, TABFontDef *psDef);
    int         ReadSymbolDef(int nSymbolIndex, TABSymbolDef *psDef);
    int         WritePenDef(TABPenDef *psDef);
    int         WriteBrushDef(TABBrushDef *psDef);
    int         WriteFontDef(TABFontDef *psDef);
    int         WriteSymbolDef(TABSymbolDef *psDef);

    int         GetMinTABFileVersion();


    void Dump(FILE *fpOut = NULL);

};

#endif