/***************************************************************************

*

*   Copyright (C) 1998-2003, International Business Machines

*   Corporation and others.  All Rights Reserved.

*

************************************************************************/

#ifndef __CMAPS_H

#define __CMAPS_H

#include "LETypes.h"

#include "sfnt.h"

class CMAPMapper

{

public:

    virtual LEGlyphID unicodeToGlyph(LEUnicode32 unicode32) const = 0;

    virtual ~CMAPMapper();

    static CMAPMapper *createUnicodeMapper(const CMAPTable *cmap);

protected:

    CMAPMapper(const CMAPTable *cmap);

    CMAPMapper() {};

private:

    const CMAPTable *fcmap;

};

class CMAPFormat4Mapper : public CMAPMapper

{

public:

    CMAPFormat4Mapper(const CMAPTable *cmap, const CMAPFormat4Encoding *header);

    virtual ~CMAPFormat4Mapper();

    virtual LEGlyphID unicodeToGlyph(LEUnicode32 unicode32) const;

protected:

    CMAPFormat4Mapper() {};

private:

    le_uint16       fEntrySelector;

    le_uint16       fRangeShift;

    const le_uint16 *fEndCodes;

    const le_uint16 *fStartCodes;

    const le_uint16 *fIdDelta;

    const le_uint16 *fIdRangeOffset;

};

class CMAPGroupMapper : public CMAPMapper

{

public:

    CMAPGroupMapper(const CMAPTable *cmap, const CMAPGroup *groups, le_uint32 nGroups);

    virtual ~CMAPGroupMapper();

    virtual LEGlyphID unicodeToGlyph(LEUnicode32 unicode32) const;

protected:

    CMAPGroupMapper() {};

private:

    le_int32 fPower;

    le_int32 fRangeOffset;

    const CMAPGroup *fGroups;

};

inline CMAPMapper::CMAPMapper(const CMAPTable *cmap)

    : fcmap(cmap)

{

    // nothing else to do

}

inline CMAPMapper::~CMAPMapper()

{

    LE_DELETE_ARRAY(fcmap);

}

#endif