/*
 *  %W% %E%
 *
 * (C) Copyright IBM Corp. 1998 - All Rights Reserved
 *
 * Portions Copyright 1998 by Sun Microsystems, Inc.,
 * 901 San Antonio Road, Palo Alto, California, 94303, U.S.A.
 * All rights reserved.
 *
 * This software is the confidential and proprietary information
 * of Sun Microsystems, Inc. ("Confidential Information").  You
 * shall not disclose such Confidential Information and shall use
 * it only in accordance with the terms of the license agreement
 * you entered into with Sun.
 *
 * The original version of this source code and documentation is
 * copyrighted and owned by IBM. These materials are provided
 * under terms of a License Agreement between IBM and Sun.
 * This technology is protected by multiple US and International
 * patents. This notice and attribution to IBM may not be removed.
 */

#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()
{
    delete[] (char *) fcmap;
}

#endif