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      1 /***************************************************************************
      2 *
      3 *   Copyright (C) 1998-2006, International Business Machines
      4 *   Corporation and others.  All Rights Reserved.
      5 *
      6 ************************************************************************/
      7 
      8 
      9 #ifndef __CMAPS_H
     10 #define __CMAPS_H
     11 
     12 #include "layout/LETypes.h"
     13 #include "letest.h"
     14 #include "sfnt.h"
     15 
     16 class CMAPMapper
     17 {
     18 public:
     19     virtual LEGlyphID unicodeToGlyph(LEUnicode32 unicode32) const = 0;
     20 
     21     virtual ~CMAPMapper();
     22 
     23     static CMAPMapper *createUnicodeMapper(const CMAPTable *cmap);
     24 
     25 protected:
     26     CMAPMapper(const CMAPTable *cmap);
     27 
     28     CMAPMapper() {};
     29 
     30 private:
     31     const CMAPTable *fcmap;
     32 };
     33 
     34 class CMAPFormat4Mapper : public CMAPMapper
     35 {
     36 public:
     37     CMAPFormat4Mapper(const CMAPTable *cmap, const CMAPFormat4Encoding *header);
     38 
     39     virtual ~CMAPFormat4Mapper();
     40 
     41     virtual LEGlyphID unicodeToGlyph(LEUnicode32 unicode32) const;
     42 
     43 protected:
     44     CMAPFormat4Mapper() {};
     45 
     46 private:
     47     le_uint16       fEntrySelector;
     48     le_uint16       fRangeShift;
     49     const le_uint16 *fEndCodes;
     50     const le_uint16 *fStartCodes;
     51     const le_uint16 *fIdDelta;
     52     const le_uint16 *fIdRangeOffset;
     53 };
     54 
     55 class CMAPGroupMapper : public CMAPMapper
     56 {
     57 public:
     58     CMAPGroupMapper(const CMAPTable *cmap, const CMAPGroup *groups, le_uint32 nGroups);
     59 
     60     virtual ~CMAPGroupMapper();
     61 
     62     virtual LEGlyphID unicodeToGlyph(LEUnicode32 unicode32) const;
     63 
     64 protected:
     65     CMAPGroupMapper() {};
     66 
     67 private:
     68     le_int32 fPower;
     69     le_int32 fRangeOffset;
     70     const CMAPGroup *fGroups;
     71 };
     72 
     73 inline CMAPMapper::CMAPMapper(const CMAPTable *cmap)
     74     : fcmap(cmap)
     75 {
     76     // nothing else to do
     77 }
     78 
     79 inline CMAPMapper::~CMAPMapper()
     80 {
     81     DELETE_ARRAY(fcmap);
     82 }
     83 
     84 #endif
     85 
     86