icuSources/test/letest/cmaps.h

   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