projects / wxWidgets.git / blame
| Commit | Line | Data |
|---|---|---|
| cabec872 RR |
1 | /***************************************************************************/ |
| 2 | /* */ | |
| 3 | /* t1gload.h */ | |
| 4 | /* */ | |
| 5 | /* Type 1 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 T1GLOAD_H | |
| 20 | #define T1GLOAD_H | |
| 21 | ||
| 22 | ||
| 23 | #ifdef FT_FLAT_COMPILE | |
| 24 | ||
| 25 | #include "t1objs.h" | |
| 26 | ||
| 27 | #else | |
| 28 | ||
| 29 | #include <type1/t1objs.h> | |
| 30 | ||
| 31 | #endif | |
| 32 | ||
| 33 | ||
| 34 | #ifdef __cplusplus | |
| 35 | extern "C" { | |
| 36 | #endif | |
| 37 | ||
| 38 | ||
| 39 | typedef struct T1_Builder_ T1_Builder; | |
| 40 | ||
| 41 | typedef FT_Error (*T1_Builder_EndChar)( T1_Builder* loader ); | |
| 42 | ||
| 43 | typedef FT_Error (*T1_Builder_Sbw)( T1_Builder* loader, | |
| 44 | FT_Pos sbx, | |
| 45 | FT_Pos sby, | |
| 46 | FT_Pos wx, | |
| 47 | FT_Pos wy ); | |
| 48 | ||
| 49 | typedef FT_Error (*T1_Builder_ClosePath)( T1_Builder* loader ); | |
| 50 | ||
| 51 | typedef FT_Error (*T1_Builder_RLineTo)( T1_Builder* loader, | |
| 52 | FT_Pos dx, | |
| 53 | FT_Pos dy ); | |
| 54 | ||
| 55 | typedef FT_Error (*T1_Builder_RMoveTo)( T1_Builder* loader, | |
| 56 | FT_Pos dx, | |
| 57 | FT_Pos dy ); | |
| 58 | ||
| 59 | typedef FT_Error (*T1_Builder_RCurveTo)( T1_Builder* loader, | |
| 60 | FT_Pos dx1, | |
| 61 | FT_Pos dy1, | |
| 62 | FT_Pos dx2, | |
| 63 | FT_Pos dy2, | |
| 64 | FT_Pos dx3, | |
| 65 | FT_Pos dy3 ); | |
| 66 | ||
| 67 | ||
| 68 | /*************************************************************************/ | |
| 69 | /* */ | |
| 70 | /* <Structure> */ | |
| 71 | /* T1_Builder_Funcs */ | |
| 72 | /* */ | |
| 73 | /* <Description> */ | |
| 74 | /* A structure to store the address of various functions used by a */ | |
| 75 | /* glyph builder to implement the outline's `path construction'. */ | |
| 76 | /* */ | |
| 77 | typedef struct T1_Builder_Funcs_ | |
| 78 | { | |
| 79 | T1_Builder_EndChar end_char; | |
| 80 | T1_Builder_Sbw set_bearing_point; | |
| 81 | T1_Builder_ClosePath close_path; | |
| 82 | T1_Builder_RLineTo rline_to; | |
| 83 | T1_Builder_RMoveTo rmove_to; | |
| 84 | T1_Builder_RCurveTo rcurve_to; | |
| 85 | ||
| 86 | } T1_Builder_Funcs; | |
| 87 | ||
| 88 | ||
| 89 | /*************************************************************************/ | |
| 90 | /* */ | |
| 91 | /* <Structure> */ | |
| 92 | /* T1_Builder */ | |
| 93 | /* */ | |
| 94 | /* <Description> */ | |
| 95 | /* A structure used during glyph loading to store its outline. */ | |
| 96 | /* */ | |
| 97 | /* <Fields> */ | |
| 98 | /* memory :: The current memory object. */ | |
| 99 | /* */ | |
| 100 | /* face :: The current face object. */ | |
| 101 | /* */ | |
| 102 | /* size :: The current size object. */ | |
| 103 | /* */ | |
| 104 | /* glyph :: The current glyph slot. */ | |
| 105 | /* */ | |
| 106 | /* loader :: The current glyph loader. */ | |
| 107 | /* */ | |
| 108 | /* current :: The current glyph outline. */ | |
| 109 | /* */ | |
| 110 | /* base :: The base glyph outline. */ | |
| 111 | /* */ | |
| 112 | /* last :: The last point position. */ | |
| 113 | /* */ | |
| 114 | /* scale_x :: The horizontal scale (FUnits to sub-pixels). */ | |
| 115 | /* */ | |
| 116 | /* scale_y :: The vertical scale (FUnits to sub-pixels). */ | |
| 117 | /* */ | |
| 118 | /* pos_x :: The horizontal translation (for composite glyphs). */ | |
| 119 | /* */ | |
| 120 | /* pos_y :: The vertical translation (for composite glyphs). */ | |
| 121 | /* */ | |
| 122 | /* left_bearing :: The left side bearing point. */ | |
| 123 | /* */ | |
| 124 | /* advance :: The horizontal advance vector. */ | |
| 125 | /* */ | |
| 126 | /* no_recurse :: */ | |
| 127 | /* */ | |
| 128 | /* bbox :: The glyph's bounding box. */ | |
| 129 | /* */ | |
| 130 | /* path_begun :: A flag which indicates that a new path has begun. */ | |
| 131 | /* */ | |
| 132 | /* load_points :: A flag which indicates, if not set, that no points */ | |
| 133 | /* are loaded. */ | |
| 134 | /* */ | |
| 135 | /* pass :: The pass number for multi-pass hinters. */ | |
| 136 | /* */ | |
| 137 | /* hint_point :: The index of the next point to hint. */ | |
| 138 | /* */ | |
| 139 | /* funcs :: A table of builder functions used to perform the */ | |
| 140 | /* outline's path construction. */ | |
| 141 | /* */ | |
| 142 | struct T1_Builder_ | |
| 143 | { | |
| 144 | FT_Memory memory; | |
| 145 | T1_Face face; | |
| 146 | T1_Size size; | |
| 147 | T1_GlyphSlot glyph; | |
| 148 | FT_GlyphLoader* loader; | |
| 149 | ||
| 150 | FT_Outline* current; /* the current glyph outline */ | |
| 151 | FT_Outline* base; /* the composite glyph outline */ | |
| 152 | ||
| 153 | FT_Vector last; | |
| 154 | ||
| 155 | FT_Fixed scale_x; | |
| 156 | FT_Fixed scale_y; | |
| 157 | ||
| 158 | FT_Pos pos_x; | |
| 159 | FT_Pos pos_y; | |
| 160 | ||
| 161 | FT_Vector left_bearing; | |
| 162 | FT_Vector advance; | |
| 163 | FT_Bool no_recurse; | |
| 164 | ||
| 165 | FT_BBox bbox; /* bounding box */ | |
| 166 | FT_Bool path_begun; | |
| 167 | FT_Bool load_points; | |
| 168 | ||
| 169 | FT_Int pass; | |
| 170 | FT_Int hint_point; | |
| 171 | ||
| 172 | /* path construction function interface */ | |
| 173 | T1_Builder_Funcs funcs; | |
| 174 | }; | |
| 175 | ||
| 176 | ||
| 177 | typedef FT_Error (*T1_Hinter_ChangeHints)( T1_Builder* builder ); | |
| 178 | ||
| 179 | typedef FT_Error (*T1_Hinter_DotSection)( T1_Builder* builder ); | |
| 180 | ||
| 181 | typedef FT_Error (*T1_Hinter_Stem)( T1_Builder* builder, | |
| 182 | FT_Pos pos, | |
| 183 | FT_Pos width, | |
| 184 | FT_Bool vertical ); | |
| 185 | ||
| 186 | typedef FT_Error (*T1_Hinter_Stem3)( T1_Builder* builder, | |
| 187 | FT_Pos pos0, | |
| 188 | FT_Pos width0, | |
| 189 | FT_Pos pos1, | |
| 190 | FT_Pos width1, | |
| 191 | FT_Pos pos2, | |
| 192 | FT_Pos width2, | |
| 193 | FT_Bool vertical ); | |
| 194 | ||
| 195 | ||
| 196 | /*************************************************************************/ | |
| 197 | /* */ | |
| 198 | /* <Structure> */ | |
| 199 | /* T1_Hinter_Funcs */ | |
| 200 | /* */ | |
| 201 | /* <Description> */ | |
| 202 | /* A structure to store the address of various functions used by a */ | |
| 203 | /* Type 1 hinter to perform outline hinting. */ | |
| 204 | /* */ | |
| 205 | typedef struct T1_Hinter_Func_ | |
| 206 | { | |
| 207 | T1_Hinter_ChangeHints change_hints; | |
| 208 | T1_Hinter_DotSection dot_section; | |
| 209 | T1_Hinter_Stem stem; | |
| 210 | T1_Hinter_Stem3 stem3; | |
| 211 | ||
| 212 | } T1_Hinter_Funcs; | |
| 213 | ||
| 214 | ||
| 215 | typedef enum T1_Operator_ | |
| 216 | { | |
| 217 | op_none = 0, | |
| 218 | op_endchar, | |
| 219 | op_hsbw, | |
| 220 | op_seac, | |
| 221 | op_sbw, | |
| 222 | op_closepath, | |
| 223 | op_hlineto, | |
| 224 | op_hmoveto, | |
| 225 | op_hvcurveto, | |
| 226 | op_rlineto, | |
| 227 | op_rmoveto, | |
| 228 | op_rrcurveto, | |
| 229 | op_vhcurveto, | |
| 230 | op_vlineto, | |
| 231 | op_vmoveto, | |
| 232 | op_dotsection, | |
| 233 | op_hstem, | |
| 234 | op_hstem3, | |
| 235 | op_vstem, | |
| 236 | op_vstem3, | |
| 237 | op_div, | |
| 238 | op_callothersubr, | |
| 239 | op_callsubr, | |
| 240 | op_pop, | |
| 241 | op_return, | |
| 242 | op_setcurrentpoint, | |
| 243 | ||
| 244 | op_max /* never remove this one */ | |
| 245 | ||
| 246 | } T1_Operator; | |
| 247 | ||
| 248 | ||
| 249 | /* execution context charstring zone */ | |
| 250 | typedef struct T1_Decoder_Zone_ | |
| 251 | { | |
| 252 | FT_Byte* base; | |
| 253 | FT_Byte* limit; | |
| 254 | FT_Byte* cursor; | |
| 255 | ||
| 256 | } T1_Decoder_Zone; | |
| 257 | ||
| 258 | ||
| 259 | typedef struct T1_Decoder_ | |
| 260 | { | |
| 261 | T1_Builder builder; | |
| 262 | T1_Hinter_Funcs hinter; | |
| 263 | ||
| 264 | FT_Int stack[T1_MAX_CHARSTRINGS_OPERANDS]; | |
| 265 | FT_Int* top; | |
| 266 | ||
| 267 | T1_Decoder_Zone zones[T1_MAX_SUBRS_CALLS + 1]; | |
| 268 | T1_Decoder_Zone* zone; | |
| 269 | ||
| 270 | FT_Int flex_state; | |
| 271 | FT_Int num_flex_vectors; | |
| 272 | FT_Vector flex_vectors[7]; | |
| 273 | ||
| 274 | } T1_Decoder; | |
| 275 | ||
| 276 | ||
| 277 | LOCAL_DEF | |
| 278 | void T1_Init_Builder( T1_Builder* builder, | |
| 279 | T1_Face face, | |
| 280 | T1_Size size, | |
| 281 | T1_GlyphSlot glyph, | |
| 282 | const T1_Builder_Funcs* funcs ); | |
| 283 | ||
| 284 | LOCAL_DEF | |
| 285 | void T1_Done_Builder( T1_Builder* builder ); | |
| 286 | ||
| 287 | LOCAL_DEF | |
| 288 | void T1_Init_Decoder( T1_Decoder* decoder, | |
| 289 | const T1_Hinter_Funcs* funcs ); | |
| 290 | ||
| 291 | LOCAL_DEF | |
| 292 | FT_Error T1_Compute_Max_Advance( T1_Face face, | |
| 293 | FT_Int* max_advance ); | |
| 294 | ||
| 295 | LOCAL_DEF | |
| 296 | FT_Error T1_Parse_CharStrings( T1_Decoder* decoder, | |
| 297 | FT_Byte* charstring_base, | |
| 298 | FT_Int charstring_len, | |
| 299 | FT_Int num_subrs, | |
| 300 | FT_Byte** subrs_base, | |
| 301 | FT_Int* subrs_len ); | |
| 302 | ||
| 303 | LOCAL_DEF | |
| 304 | FT_Error T1_Add_Points( T1_Builder* builder, | |
| 305 | FT_Int num_points ); | |
| 306 | ||
| 307 | LOCAL_DEF | |
| 308 | FT_Error T1_Add_Contours( T1_Builder* builder, | |
| 309 | FT_Int num_contours ); | |
| 310 | ||
| 311 | LOCAL_DEF | |
| 312 | FT_Error T1_Load_Glyph( T1_GlyphSlot glyph, | |
| 313 | T1_Size size, | |
| 314 | FT_Int glyph_index, | |
| 315 | FT_Int load_flags ); | |
| 316 | ||
| 317 | ||
| 318 | #ifdef __cplusplus | |
| 319 | } | |
| 320 | #endif | |
| 321 | ||
| 322 | ||
| 323 | #endif /* T1GLOAD_H */ | |
| 324 | ||
| 325 | ||
| 326 | /* END */ |