icuSources/layout/ValueRecords.h

   1 /*
   2  *
   3  * (C) Copyright IBM Corp. 1998-2005 - All Rights Reserved
   4  *
   5  */
   6
   7 #ifndef __VALUERECORDS_H
   8 #define __VALUERECORDS_H
   9
  10 /**
  11  * \file
  12  * \internal
  13  */
  14
  15 #include "LETypes.h"
  16 #include "LEFontInstance.h"
  17 #include "OpenTypeTables.h"
  18 #include "GlyphIterator.h"
  19
  20 U_NAMESPACE_BEGIN
  21
  22 typedef le_uint16 ValueFormat;
  23 typedef le_int16 ValueRecordField;
  24
  25 struct ValueRecord
  26 {
  27     le_int16   values[ANY_NUMBER];
  28
  29     le_int16   getFieldValue(ValueFormat valueFormat, ValueRecordField field) const;
  30     le_int16   getFieldValue(le_int16 index, ValueFormat valueFormat, ValueRecordField field) const;
  31     void    adjustPosition(ValueFormat valueFormat, const char *base, GlyphIterator &glyphIterator,
  32                 const LEFontInstance *fontInstance) const;
  33     void    adjustPosition(le_int16 index, ValueFormat valueFormat, const char *base, GlyphIterator &glyphIterator,
  34                 const LEFontInstance *fontInstance) const;
  35
  36     static le_int16    getSize(ValueFormat valueFormat);
  37
  38 private:
  39     static le_int16    getFieldCount(ValueFormat valueFormat);
  40     static le_int16    getFieldIndex(ValueFormat valueFormat, ValueRecordField field);
  41 };
  42
  43 enum ValueRecordFields
  44 {
  45     vrfXPlacement   = 0,
  46     vrfYPlacement   = 1,
  47     vrfXAdvance     = 2,
  48     vrfYAdvance     = 3,
  49     vrfXPlaDevice   = 4,
  50     vrfYPlaDevice   = 5,
  51     vrfXAdvDevice   = 6,
  52     vrfYAdvDevice   = 7
  53 };
  54
  55 enum ValueFormatBits
  56 {
  57     vfbXPlacement   = 0x0001,
  58     vfbYPlacement   = 0x0002,
  59     vfbXAdvance     = 0x0004,
  60     vfbYAdvance     = 0x0008,
  61     vfbXPlaDevice   = 0x0010,
  62     vfbYPlaDevice   = 0x0020,
  63     vfbXAdvDevice   = 0x0040,
  64     vfbYAdvDevice   = 0x0080,
  65     vfbReserved     = 0xFF00,
  66     vfbAnyDevice    = vfbXPlaDevice + vfbYPlaDevice + vfbXAdvDevice + vfbYAdvDevice
  67 };
  68
  69 U_NAMESPACE_END
  70 #endif
  71
  72