icuSources/test/letest/cmaps.h

   1 /***************************************************************************
   2 *
   3 *   Copyright (C) 1998-2003, 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 "LETypes.h"
  13 #include "sfnt.h"
  14
  15 class CMAPMapper
  16 {
  17 public:
  18     virtual LEGlyphID unicodeToGlyph(LEUnicode32 unicode32) const = 0;
  19
  20     virtual ~CMAPMapper();
  21
  22     static CMAPMapper *createUnicodeMapper(const CMAPTable *cmap);
  23
  24 protected:
  25     CMAPMapper(const CMAPTable *cmap);
  26
  27     CMAPMapper() {};
  28
  29 private:
  30     const CMAPTable *fcmap;
  31 };
  32
  33 class CMAPFormat4Mapper : public CMAPMapper
  34 {
  35 public:
  36     CMAPFormat4Mapper(const CMAPTable *cmap, const CMAPFormat4Encoding *header);
  37
  38     virtual ~CMAPFormat4Mapper();
  39
  40     virtual LEGlyphID unicodeToGlyph(LEUnicode32 unicode32) const;
  41
  42 protected:
  43     CMAPFormat4Mapper() {};
  44
  45 private:
  46     le_uint16       fEntrySelector;
  47     le_uint16       fRangeShift;
  48     const le_uint16 *fEndCodes;
  49     const le_uint16 *fStartCodes;
  50     const le_uint16 *fIdDelta;
  51     const le_uint16 *fIdRangeOffset;
  52 };
  53
  54 class CMAPGroupMapper : public CMAPMapper
  55 {
  56 public:
  57     CMAPGroupMapper(const CMAPTable *cmap, const CMAPGroup *groups, le_uint32 nGroups);
  58
  59     virtual ~CMAPGroupMapper();
  60
  61     virtual LEGlyphID unicodeToGlyph(LEUnicode32 unicode32) const;
  62
  63 protected:
  64     CMAPGroupMapper() {};
  65
  66 private:
  67     le_int32 fPower;
  68     le_int32 fRangeOffset;
  69     const CMAPGroup *fGroups;
  70 };
  71
  72 inline CMAPMapper::CMAPMapper(const CMAPTable *cmap)
  73     : fcmap(cmap)
  74 {
  75     // nothing else to do
  76 }
  77
  78 inline CMAPMapper::~CMAPMapper()
  79 {
  80     LE_DELETE_ARRAY(fcmap);
  81 }
  82
  83 #endif
  84