projects / wxWidgets.git / blame
| Commit | Line | Data |
|---|---|---|
| cabec872 RR |
1 | /***************************************************************************/ |
| 2 | /* */ | |
| 3 | /* t2gload.h */ | |
| 4 | /* */ | |
| 5 | /* OpenType Glyph Loader (specification). */ | |
| 6 | /* */ | |
| 7 | /* Copyright 1996-2000 by */ | |
| 8 | /* David Turner, Robert Wilhelm, and Werner Lemberg. */ | |
| 9 | /* */ | |
| 10 | /* This file is part of the FreeType project, and may only be used, */ | |
| 11 | /* modified, and distributed under the terms of the FreeType project */ | |
| 12 | /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ | |
| 13 | /* this file you indicate that you have read the license and */ | |
| 14 | /* understand and accept it fully. */ | |
| 15 | /* */ | |
| 16 | /***************************************************************************/ | |
| 17 | ||
| 18 | ||
| 19 | #ifndef T2GLOAD_H | |
| 20 | #define T2GLOAD_H | |
| 21 | ||
| 22 | #include <freetype/freetype.h> | |
| 23 | ||
| 24 | ||
| 25 | #ifdef FT_FLAT_COMPILE | |
| 26 | ||
| 27 | #include "t2objs.h" | |
| 28 | ||
| 29 | #else | |
| 30 | ||
| 31 | #include <cff/t2objs.h> | |
| 32 | ||
| 33 | #endif | |
| 34 | ||
| 35 | ||
| 36 | #ifdef __cplusplus | |
| 37 | extern "C" { | |
| 38 | #endif | |
| 39 | ||
| 40 | ||
| 41 | #define T2_MAX_OPERANDS 48 | |
| 42 | #define T2_MAX_SUBRS_CALLS 32 | |
| 43 | ||
| 44 | ||
| 45 | /*************************************************************************/ | |
| 46 | /* */ | |
| 47 | /* <Structure> */ | |
| 48 | /* T2_Builder */ | |
| 49 | /* */ | |
| 50 | /* <Description> */ | |
| 51 | /* A structure used during glyph loading to store its outline. */ | |
| 52 | /* */ | |
| 53 | /* <Fields> */ | |
| 54 | /* memory :: The current memory object. */ | |
| 55 | /* */ | |
| 56 | /* face :: The current face object. */ | |
| 57 | /* */ | |
| 58 | /* glyph :: The current glyph slot. */ | |
| 59 | /* */ | |
| 60 | /* current :: The current glyph outline. */ | |
| 61 | /* */ | |
| 62 | /* base :: The base glyph outline. */ | |
| 63 | /* */ | |
| 64 | /* max_points :: maximum points in builder outline */ | |
| 65 | /* */ | |
| 66 | /* max_contours :: Maximal number of contours in builder outline. */ | |
| 67 | /* */ | |
| 68 | /* last :: The last point position. */ | |
| 69 | /* */ | |
| 70 | /* scale_x :: The horizontal scale (FUnits to sub-pixels). */ | |
| 71 | /* */ | |
| 72 | /* scale_y :: The vertical scale (FUnits to sub-pixels). */ | |
| 73 | /* */ | |
| 74 | /* pos_x :: The horizontal translation (if composite glyph). */ | |
| 75 | /* */ | |
| 76 | /* pos_y :: The vertical translation (if composite glyph). */ | |
| 77 | /* */ | |
| 78 | /* left_bearing :: The left side bearing point. */ | |
| 79 | /* */ | |
| 80 | /* advance :: The horizontal advance vector. */ | |
| 81 | /* */ | |
| 82 | /* bbox :: Unused. */ | |
| 83 | /* */ | |
| 84 | /* path_begun :: A flag which indicates that a new path has begun. */ | |
| 85 | /* */ | |
| 86 | /* load_points :: If this flag is not set, no points are loaded. */ | |
| 87 | /* */ | |
| 88 | /* no_recurse :: Set but not used. */ | |
| 89 | /* */ | |
| 90 | /* error :: An error code that is only used to report memory */ | |
| 91 | /* allocation problems. */ | |
| 92 | /* */ | |
| 93 | /* metrics_only :: A boolean indicating that we only want to compute */ | |
| 94 | /* the metrics of a given glyph, not load all of its */ | |
| 95 | /* points. */ | |
| 96 | /* */ | |
| 97 | typedef struct T2_Builder_ | |
| 98 | { | |
| 99 | FT_Memory memory; | |
| 100 | TT_Face face; | |
| 101 | T2_GlyphSlot glyph; | |
| 102 | FT_GlyphLoader* loader; | |
| 103 | FT_Outline* base; | |
| 104 | FT_Outline* current; | |
| 105 | ||
| 106 | FT_Vector last; | |
| 107 | ||
| 108 | FT_Fixed scale_x; | |
| 109 | FT_Fixed scale_y; | |
| 110 | ||
| 111 | FT_Pos pos_x; | |
| 112 | FT_Pos pos_y; | |
| 113 | ||
| 114 | FT_Vector left_bearing; | |
| 115 | FT_Vector advance; | |
| 116 | ||
| 117 | FT_BBox bbox; /* bounding box */ | |
| 118 | FT_Bool path_begun; | |
| 119 | FT_Bool load_points; | |
| 120 | FT_Bool no_recurse; | |
| 121 | ||
| 122 | FT_Error error; /* only used for memory errors */ | |
| 123 | FT_Bool metrics_only; | |
| 124 | ||
| 125 | } T2_Builder; | |
| 126 | ||
| 127 | ||
| 128 | /* execution context charstring zone */ | |
| 129 | ||
| 130 | typedef struct T2_Decoder_Zone_ | |
| 131 | { | |
| 132 | FT_Byte* base; | |
| 133 | FT_Byte* limit; | |
| 134 | FT_Byte* cursor; | |
| 135 | ||
| 136 | } T2_Decoder_Zone; | |
| 137 | ||
| 138 | ||
| 139 | typedef struct T2_Decoder_ | |
| 140 | { | |
| 141 | T2_Builder builder; | |
| 142 | CFF_Font* cff; | |
| 143 | ||
| 144 | FT_Fixed stack[T2_MAX_OPERANDS + 1]; | |
| 145 | FT_Fixed* top; | |
| 146 | ||
| 147 | T2_Decoder_Zone zones[T2_MAX_SUBRS_CALLS + 1]; | |
| 148 | T2_Decoder_Zone* zone; | |
| 149 | ||
| 150 | FT_Int flex_state; | |
| 151 | FT_Int num_flex_vectors; | |
| 152 | FT_Vector flex_vectors[7]; | |
| 153 | ||
| 154 | FT_Pos glyph_width; | |
| 155 | FT_Pos nominal_width; | |
| 156 | ||
| 157 | FT_Bool read_width; | |
| 158 | FT_Int num_hints; | |
| 159 | FT_Fixed* buildchar; | |
| 160 | FT_Int len_buildchar; | |
| 161 | ||
| 162 | FT_UInt num_locals; | |
| 163 | FT_UInt num_globals; | |
| 164 | ||
| 165 | FT_Int locals_bias; | |
| 166 | FT_Int globals_bias; | |
| 167 | ||
| 168 | FT_Byte** locals; | |
| 169 | FT_Byte** globals; | |
| 170 | ||
| 171 | } T2_Decoder; | |
| 172 | ||
| 173 | ||
| 174 | LOCAL_DEF | |
| 175 | void T2_Init_Decoder( T2_Decoder* decoder, | |
| 176 | TT_Face face, | |
| 177 | T2_Size size, | |
| 178 | T2_GlyphSlot slot ); | |
| 179 | ||
| 180 | LOCAL_DEF | |
| 181 | void T2_Prepare_Decoder( T2_Decoder* decoder, | |
| 182 | FT_UInt glyph_index ); | |
| 183 | ||
| 184 | #if 0 /* unused until we support pure CFF fonts */ | |
| 185 | ||
| 186 | /* Compute the maximum advance width of a font through quick parsing */ | |
| 187 | LOCAL_DEF | |
| 188 | FT_Error T2_Compute_Max_Advance( TT_Face face, | |
| 189 | FT_Int* max_advance ); | |
| 190 | ||
| 191 | #endif /* 0 */ | |
| 192 | ||
| 193 | LOCAL_DEF | |
| 194 | FT_Error T2_Parse_CharStrings( T2_Decoder* decoder, | |
| 195 | FT_Byte* charstring_base, | |
| 196 | FT_Int charstring_len ); | |
| 197 | ||
| 198 | LOCAL_DEF | |
| 199 | FT_Error T2_Load_Glyph( T2_GlyphSlot glyph, | |
| 200 | T2_Size size, | |
| 201 | FT_Int glyph_index, | |
| 202 | FT_Int load_flags ); | |
| 203 | ||
| 204 | ||
| 205 | #ifdef __cplusplus | |
| 206 | } | |
| 207 | #endif | |
| 208 | ||
| 209 | ||
| 210 | #endif /* T2GLOAD_H */ | |
| 211 | ||
| 212 | ||
| 213 | /* END */ |