third_party/harfbuzz/src/harfbuzz-gdef-private.h

   1 /*
   2  * Copyright (C) 1998-2004  David Turner and Werner Lemberg
   3  * Copyright (C) 2006  Behdad Esfahbod
   4  *
   5  * This is part of HarfBuzz, an OpenType Layout engine library.
   6  *
   7  * Permission is hereby granted, without written agreement and without
   8  * license or royalty fees, to use, copy, modify, and distribute this
   9  * software and its documentation for any purpose, provided that the
  10  * above copyright notice and the following two paragraphs appear in
  11  * all copies of this software.
  12  *
  13  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
  14  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
  15  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
  16  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
  17  * DAMAGE.
  18  *
  19  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
  20  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
  21  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
  22  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
  23  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
  24  */
  25
  26 #ifndef HARFBUZZ_GDEF_PRIVATE_H
  27 #define HARFBUZZ_GDEF_PRIVATE_H
  28
  29 #include "harfbuzz-impl.h"
  30 #include "harfbuzz-stream-private.h"
  31 #include "harfbuzz-buffer-private.h"
  32 #include "harfbuzz-gdef.h"
  33
  34 HB_BEGIN_HEADER
  35
  36
  37 #ifdef HB_USE_PACKED_STRUCTS
  38 #pragma pack(push, 1)
  39 #endif
  40
  41 /* Attachment related structures */
  42
  43 struct  HB_AttachPoint_
  44 {
  45   HB_UShort*  PointIndex;             /* array of contour points      */
  46   HB_UShort   PointCount;             /* size of the PointIndex array */
  47 };
  48
  49 /* Ligature Caret related structures */
  50
  51 struct  HB_CaretValueFormat1_
  52 {
  53   HB_Short  Coordinate;               /* x or y value (in design units) */
  54 };
  55
  56 typedef struct HB_CaretValueFormat1_  HB_CaretValueFormat1;
  57
  58
  59 struct  HB_CaretValueFormat2_
  60 {
  61   HB_UShort  CaretValuePoint;         /* contour point index on glyph */
  62 };
  63
  64 typedef struct HB_CaretValueFormat2_  HB_CaretValueFormat2;
  65
  66
  67 struct  HB_CaretValueFormat3_
  68 {
  69   HB_Device*  Device;                 /* Device table for x or y value  */
  70   HB_Short    Coordinate;             /* x or y value (in design units) */
  71 };
  72
  73 typedef struct HB_CaretValueFormat3_  HB_CaretValueFormat3;
  74
  75
  76 #ifdef HB_SUPPORT_MULTIPLE_MASTER
  77 struct  HB_CaretValueFormat4_
  78 {
  79   HB_UShort  IdCaretValue;            /* metric ID */
  80 };
  81
  82 typedef struct HB_CaretValueFormat4_  HB_CaretValueFormat4;
  83 #endif
  84
  85
  86 struct  HB_CaretValue_
  87 {
  88   union
  89   {
  90     HB_CaretValueFormat1  cvf1;
  91     HB_CaretValueFormat2  cvf2;
  92     HB_CaretValueFormat3  cvf3;
  93 #ifdef HB_SUPPORT_MULTIPLE_MASTER
  94     HB_CaretValueFormat4  cvf4;
  95 #endif
  96   } cvf;
  97
  98   HB_Byte  CaretValueFormat;          /* 1, 2, 3, or 4 */
  99 };
 100
 101 typedef struct HB_CaretValue_  HB_CaretValue;
 102
 103
 104 struct  HB_LigGlyph_
 105 {
 106   HB_CaretValue*  CaretValue;        /* array of caret values  */
 107   HB_UShort        CaretCount;        /* number of caret values */
 108   HB_Bool          loaded;
 109 };
 110
 111
 112 HB_INTERNAL HB_Error
 113 _HB_GDEF_Add_Glyph_Property( HB_GDEFHeader* gdef,
 114                                        HB_UShort        glyphID,
 115                                        HB_UShort        property );
 116
 117 HB_INTERNAL HB_Error
 118 _HB_GDEF_Check_Property( HB_GDEFHeader* gdef,
 119                                    HB_GlyphItem    item,
 120                                    HB_UShort        flags,
 121                                    HB_UShort*       property );
 122
 123 HB_INTERNAL HB_Error
 124 _HB_GDEF_LoadMarkAttachClassDef_From_LookupFlags( HB_GDEFHeader* gdef,
 125                                                   HB_Stream      input,
 126                                                   HB_Lookup*     lo,
 127                                                   HB_UShort      num_lookups );
 128
 129 #ifdef HB_USE_PACKED_STRUCTS
 130 #pragma pack(pop)
 131 #endif
 132
 133 HB_END_HEADER
 134
 135 #endif /* HARFBUZZ_GDEF_PRIVATE_H */