David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1 | /***************************************************************************/ |
| 2 | /* */ |
| 3 | /* ttgload.c */ |
| 4 | /* */ |
| 5 | /* TrueType Glyph Loader (body). */ |
| 6 | /* */ |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame] | 7 | /* Copyright 1996-2001, 2002, 2003, 2004, 2005 by */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 8 | /* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
| 9 | /* */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 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 */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 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 | |
Werner Lemberg | cc069be | 2000-12-08 16:17:16 +0000 | [diff] [blame] | 18 | |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 19 | #include <ft2build.h> |
| 20 | #include FT_INTERNAL_DEBUG_H |
| 21 | #include FT_INTERNAL_CALC_H |
| 22 | #include FT_INTERNAL_STREAM_H |
| 23 | #include FT_INTERNAL_SFNT_H |
| 24 | #include FT_TRUETYPE_TAGS_H |
| 25 | #include FT_OUTLINE_H |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 26 | |
David Turner | 8d3a401 | 2001-03-20 11:14:24 +0000 | [diff] [blame] | 27 | #include "ttgload.h" |
Werner Lemberg | f13516c | 2005-03-03 17:09:08 +0000 | [diff] [blame] | 28 | #include "ttpload.h" |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 29 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 30 | #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT |
| 31 | #include "ttgxvar.h" |
| 32 | #endif |
| 33 | |
Werner Lemberg | 1f7f0e8 | 2001-06-06 17:30:41 +0000 | [diff] [blame] | 34 | #include "tterrors.h" |
| 35 | |
David Turner | a90663f | 2000-07-08 00:41:13 +0000 | [diff] [blame] | 36 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 37 | /*************************************************************************/ |
| 38 | /* */ |
| 39 | /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ |
| 40 | /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ |
| 41 | /* messages during execution. */ |
| 42 | /* */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 43 | #undef FT_COMPONENT |
| 44 | #define FT_COMPONENT trace_ttgload |
| 45 | |
| 46 | |
| 47 | /*************************************************************************/ |
| 48 | /* */ |
| 49 | /* Composite font flags. */ |
| 50 | /* */ |
Werner Lemberg | eed446d | 2002-08-16 12:46:52 +0000 | [diff] [blame] | 51 | #define ARGS_ARE_WORDS 0x0001 |
| 52 | #define ARGS_ARE_XY_VALUES 0x0002 |
| 53 | #define ROUND_XY_TO_GRID 0x0004 |
| 54 | #define WE_HAVE_A_SCALE 0x0008 |
| 55 | /* reserved 0x0010 */ |
| 56 | #define MORE_COMPONENTS 0x0020 |
| 57 | #define WE_HAVE_AN_XY_SCALE 0x0040 |
| 58 | #define WE_HAVE_A_2X2 0x0080 |
| 59 | #define WE_HAVE_INSTR 0x0100 |
| 60 | #define USE_MY_METRICS 0x0200 |
| 61 | #define OVERLAP_COMPOUND 0x0400 |
| 62 | #define SCALED_COMPONENT_OFFSET 0x0800 |
| 63 | #define UNSCALED_COMPONENT_OFFSET 0x1000 |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 64 | |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 65 | |
David Turner | 77b68b8 | 2003-01-08 09:59:17 +0000 | [diff] [blame] | 66 | /* Maximum recursion depth we allow for composite glyphs. |
| 67 | * The TrueType spec doesn't say anything about recursion, |
| 68 | * so it isn't clear that recursion is allowed at all. But |
| 69 | * we'll be generous. |
| 70 | */ |
| 71 | #define TT_MAX_COMPOSITE_RECURSE 5 |
| 72 | |
| 73 | |
| 74 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 75 | /*************************************************************************/ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 76 | /* */ |
| 77 | /* <Function> */ |
Werner Lemberg | 8744edf | 2005-04-06 14:48:55 +0000 | [diff] [blame] | 78 | /* tt_face_get_metrics */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 79 | /* */ |
| 80 | /* <Description> */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 81 | /* Returns the horizontal or vertical metrics in font units for a */ |
| 82 | /* given glyph. The metrics are the left side bearing (resp. top */ |
| 83 | /* side bearing) and advance width (resp. advance height). */ |
| 84 | /* */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 85 | /* <Input> */ |
| 86 | /* header :: A pointer to either the horizontal or vertical metrics */ |
| 87 | /* structure. */ |
| 88 | /* */ |
Werner Lemberg | 0d9165e | 2002-03-07 21:59:59 +0000 | [diff] [blame] | 89 | /* idx :: The glyph index. */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 90 | /* */ |
| 91 | /* <Output> */ |
| 92 | /* bearing :: The bearing, either left side or top side. */ |
| 93 | /* */ |
| 94 | /* advance :: The advance width resp. advance height. */ |
| 95 | /* */ |
| 96 | /* <Note> */ |
| 97 | /* This function will much probably move to another component in the */ |
| 98 | /* near future, but I haven't decided which yet. */ |
| 99 | /* */ |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 100 | #ifdef FT_OPTIMIZE_MEMORY |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame] | 101 | |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 102 | static void |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame] | 103 | tt_face_get_metrics( TT_Face face, |
| 104 | FT_Bool vertical, |
| 105 | FT_UInt idx, |
| 106 | FT_Short *abearing, |
| 107 | FT_UShort *aadvance ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 108 | { |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 109 | TT_HoriHeader* header; |
| 110 | FT_Byte* p; |
| 111 | FT_Byte* limit; |
| 112 | FT_UShort k; |
| 113 | |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame] | 114 | |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 115 | if ( vertical ) |
| 116 | { |
| 117 | header = (TT_HoriHeader*)&face->vertical; |
| 118 | p = face->vert_metrics; |
| 119 | limit = p + face->vert_metrics_size; |
| 120 | } |
| 121 | else |
| 122 | { |
| 123 | header = &face->horizontal; |
| 124 | p = face->horz_metrics; |
| 125 | limit = p + face->horz_metrics_size; |
| 126 | } |
| 127 | |
| 128 | k = header->number_Of_HMetrics; |
| 129 | |
| 130 | if ( k > 0 ) |
| 131 | { |
| 132 | if ( idx < (FT_UInt)k ) |
| 133 | { |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame] | 134 | p += 4 * idx; |
Werner Lemberg | 8744edf | 2005-04-06 14:48:55 +0000 | [diff] [blame] | 135 | if ( p + 4 > limit ) |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 136 | goto NoData; |
| 137 | |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame] | 138 | *aadvance = FT_NEXT_USHORT( p ); |
| 139 | *abearing = FT_NEXT_SHORT( p ); |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 140 | } |
| 141 | else |
| 142 | { |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame] | 143 | p += 4 * ( k - 1 ); |
| 144 | if ( p + 4 > limit ) |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 145 | goto NoData; |
| 146 | |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame] | 147 | *aadvance = FT_NEXT_USHORT( p ); |
| 148 | p += 2 + 2 * ( idx - k ); |
| 149 | if ( p + 2 > limit ) |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 150 | *abearing = 0; |
| 151 | else |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame] | 152 | *abearing = FT_PEEK_SHORT( p ); |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 153 | } |
| 154 | } |
| 155 | else |
| 156 | { |
| 157 | NoData: |
| 158 | *abearing = 0; |
| 159 | *aadvance = 0; |
| 160 | } |
| 161 | } |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame] | 162 | |
| 163 | #else /* !FT_OPTIMIZE_MEMORY */ |
| 164 | |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 165 | static void |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame] | 166 | tt_face_get_metrics( TT_Face face, |
| 167 | FT_Bool vertical, |
| 168 | FT_UInt idx, |
| 169 | FT_Short *abearing, |
| 170 | FT_UShort *aadvance ) |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 171 | { |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame] | 172 | TT_HoriHeader* header = vertical ? (TT_HoriHeader*)&face->vertical |
| 173 | : &face->horizontal; |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 174 | TT_LongMetrics longs_m; |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame] | 175 | FT_UShort k = header->number_Of_HMetrics; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 176 | |
| 177 | |
Werner Lemberg | 6b5c669 | 2002-09-05 15:10:54 +0000 | [diff] [blame] | 178 | if ( k == 0 ) |
Werner Lemberg | 215bf44 | 2002-08-21 17:36:20 +0000 | [diff] [blame] | 179 | { |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 180 | *abearing = *aadvance = 0; |
Werner Lemberg | 215bf44 | 2002-08-21 17:36:20 +0000 | [diff] [blame] | 181 | return; |
| 182 | } |
| 183 | |
Werner Lemberg | 0d9165e | 2002-03-07 21:59:59 +0000 | [diff] [blame] | 184 | if ( idx < (FT_UInt)k ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 185 | { |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame] | 186 | longs_m = (TT_LongMetrics)header->long_metrics + idx; |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 187 | *abearing = longs_m->bearing; |
| 188 | *aadvance = longs_m->advance; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 189 | } |
| 190 | else |
| 191 | { |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 192 | *abearing = ((TT_ShortMetrics*)header->short_metrics)[idx - k]; |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame] | 193 | *aadvance = ((TT_LongMetrics)header->long_metrics)[k - 1].advance; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 194 | } |
| 195 | } |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame] | 196 | |
| 197 | #endif /* !FT_OPTIMIZE_MEMORY */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 198 | |
| 199 | |
| 200 | /*************************************************************************/ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 201 | /* */ |
Werner Lemberg | dcd2e14 | 2000-06-25 07:43:15 +0000 | [diff] [blame] | 202 | /* Returns the horizontal metrics in font units for a given glyph. If */ |
| 203 | /* `check' is true, take care of monospaced fonts by returning the */ |
| 204 | /* advance width maximum. */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 205 | /* */ |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 206 | static void |
| 207 | Get_HMetrics( TT_Face face, |
Werner Lemberg | 0d9165e | 2002-03-07 21:59:59 +0000 | [diff] [blame] | 208 | FT_UInt idx, |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 209 | FT_Bool check, |
| 210 | FT_Short* lsb, |
| 211 | FT_UShort* aw ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 212 | { |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 213 | tt_face_get_metrics( face, 0, idx, lsb, aw ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 214 | |
| 215 | if ( check && face->postscript.isFixedPitch ) |
| 216 | *aw = face->horizontal.advance_Width_Max; |
| 217 | } |
| 218 | |
| 219 | |
| 220 | /*************************************************************************/ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 221 | /* */ |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 222 | /* Returns the advance width table for a given pixel size if it is found */ |
| 223 | /* in the font's `hdmx' table (if any). */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 224 | /* */ |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 225 | static FT_Byte* |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 226 | Get_Advance_WidthPtr( TT_Face face, |
| 227 | FT_Int ppem, |
| 228 | FT_UInt gindex ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 229 | { |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 230 | #ifdef FT_OPTIMIZE_MEMORY |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame] | 231 | |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 232 | FT_UInt nn; |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame] | 233 | FT_Byte* result = NULL; |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 234 | FT_ULong record_size = face->hdmx_record_size; |
| 235 | FT_Byte* record = face->hdmx_table + 8; |
| 236 | |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame] | 237 | |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 238 | for ( nn = 0; nn < face->hdmx_record_count; nn++ ) |
| 239 | if ( face->hdmx_record_sizes[nn] == ppem ) |
| 240 | { |
| 241 | gindex += 2; |
| 242 | if ( gindex < record_size ) |
| 243 | result = record + gindex; |
| 244 | break; |
| 245 | } |
| 246 | |
| 247 | return result; |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame] | 248 | |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 249 | #else |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame] | 250 | |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 251 | FT_UShort n; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 252 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 253 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 254 | for ( n = 0; n < face->hdmx.num_records; n++ ) |
| 255 | if ( face->hdmx.records[n].ppem == ppem ) |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 256 | return &face->hdmx.records[n].widths[gindex]; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 257 | |
| 258 | return NULL; |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame] | 259 | |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 260 | #endif |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 261 | } |
| 262 | |
| 263 | |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 264 | /*************************************************************************/ |
| 265 | /* */ |
| 266 | /* Returns the vertical metrics in font units for a given glyph. */ |
| 267 | /* Greg Hitchcock from Microsoft told us that if there were no `vmtx' */ |
| 268 | /* table, typoAscender/Descender from the `OS/2' table would be used */ |
| 269 | /* instead, and if there were no `OS/2' table, use ascender/descender */ |
| 270 | /* from the `hhea' table. But that is not what Microsoft's rasterizer */ |
| 271 | /* apparently does: It uses the ppem value as the advance height, and */ |
| 272 | /* sets the top side bearing to be zero. */ |
| 273 | /* */ |
| 274 | /* The monospace `check' is probably not meaningful here, but we leave */ |
| 275 | /* it in for a consistent interface. */ |
| 276 | /* */ |
| 277 | static void |
| 278 | Get_VMetrics( TT_Face face, |
| 279 | FT_UInt idx, |
| 280 | FT_Bool check, |
| 281 | FT_Short* tsb, |
| 282 | FT_UShort* ah ) |
| 283 | { |
| 284 | FT_UNUSED( check ); |
| 285 | |
| 286 | if ( face->vertical_info ) |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 287 | tt_face_get_metrics( face, 1, idx, tsb, ah ); |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 288 | |
| 289 | #if 1 /* Emperically determined, at variance with what MS said */ |
| 290 | |
| 291 | else |
| 292 | { |
| 293 | *tsb = 0; |
| 294 | *ah = face->root.units_per_EM; |
| 295 | } |
| 296 | |
| 297 | #else /* This is what MS said to do. It isn't what they do, however. */ |
| 298 | |
| 299 | else if ( face->os2.version != 0xFFFFU ) |
| 300 | { |
| 301 | *tsb = face->os2.sTypoAscender; |
| 302 | *ah = face->os2.sTypoAscender - face->os2.sTypoDescender; |
| 303 | } |
David Turner | 2f0fdb9 | 2004-06-21 21:16:56 +0000 | [diff] [blame] | 304 | else |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 305 | { |
| 306 | *tsb = face->horizontal.Ascender; |
| 307 | *ah = face->horizontal.Ascender - face->horizontal.Descender; |
| 308 | } |
| 309 | |
| 310 | #endif |
| 311 | |
| 312 | } |
| 313 | |
| 314 | |
Werner Lemberg | 5811c7c | 2000-07-02 13:53:16 +0000 | [diff] [blame] | 315 | #define cur_to_org( n, zone ) \ |
David Turner | 4632fcc | 2004-01-15 19:07:44 +0000 | [diff] [blame] | 316 | FT_ARRAY_COPY( (zone)->org, (zone)->cur, (n) ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 317 | |
Werner Lemberg | 5811c7c | 2000-07-02 13:53:16 +0000 | [diff] [blame] | 318 | #define org_to_cur( n, zone ) \ |
David Turner | 4632fcc | 2004-01-15 19:07:44 +0000 | [diff] [blame] | 319 | FT_ARRAY_COPY( (zone)->cur, (zone)->org, (n) ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 320 | |
| 321 | |
| 322 | /*************************************************************************/ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 323 | /* */ |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 324 | /* Translates an array of coordinates. */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 325 | /* */ |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 326 | static void |
| 327 | translate_array( FT_UInt n, |
| 328 | FT_Vector* coords, |
| 329 | FT_Pos delta_x, |
| 330 | FT_Pos delta_y ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 331 | { |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 332 | FT_UInt k; |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 333 | |
Werner Lemberg | 5811c7c | 2000-07-02 13:53:16 +0000 | [diff] [blame] | 334 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 335 | if ( delta_x ) |
| 336 | for ( k = 0; k < n; k++ ) |
| 337 | coords[k].x += delta_x; |
| 338 | |
| 339 | if ( delta_y ) |
| 340 | for ( k = 0; k < n; k++ ) |
| 341 | coords[k].y += delta_y; |
| 342 | } |
| 343 | |
| 344 | |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 345 | static void |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 346 | tt_prepare_zone( TT_GlyphZone zone, |
| 347 | FT_GlyphLoad load, |
| 348 | FT_UInt start_point, |
| 349 | FT_UInt start_contour ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 350 | { |
Werner Lemberg | 8eb0353 | 2001-06-19 23:03:41 +0000 | [diff] [blame] | 351 | zone->n_points = (FT_UShort)( load->outline.n_points - start_point ); |
| 352 | zone->n_contours = (FT_Short) ( load->outline.n_contours - start_contour ); |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 353 | zone->org = load->extra_points + start_point; |
| 354 | zone->cur = load->outline.points + start_point; |
| 355 | zone->tags = (FT_Byte*)load->outline.tags + start_point; |
| 356 | zone->contours = (FT_UShort*)load->outline.contours + start_contour; |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 357 | } |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 358 | |
| 359 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 360 | #undef IS_HINTED |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 361 | #define IS_HINTED( flags ) ( ( flags & FT_LOAD_NO_HINTING ) == 0 ) |
| 362 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 363 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 364 | /*************************************************************************/ |
| 365 | /* */ |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 366 | /* The following functions are used by default with TrueType fonts. */ |
| 367 | /* However, they can be replaced by alternatives if we need to support */ |
| 368 | /* TrueType-compressed formats (like MicroType) in the future. */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 369 | /* */ |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 370 | /*************************************************************************/ |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 371 | |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 372 | FT_CALLBACK_DEF( FT_Error ) |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 373 | TT_Access_Glyph_Frame( TT_Loader loader, |
| 374 | FT_UInt glyph_index, |
| 375 | FT_ULong offset, |
| 376 | FT_UInt byte_count ) |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 377 | { |
Werner Lemberg | e72c9fe | 2000-07-31 18:59:02 +0000 | [diff] [blame] | 378 | FT_Error error; |
| 379 | FT_Stream stream = loader->stream; |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 380 | |
Werner Lemberg | 353dfea | 2000-08-29 18:58:41 +0000 | [diff] [blame] | 381 | /* for non-debug mode */ |
| 382 | FT_UNUSED( glyph_index ); |
| 383 | |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 384 | |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 385 | FT_TRACE5(( "Glyph %ld\n", glyph_index )); |
Werner Lemberg | e72c9fe | 2000-07-31 18:59:02 +0000 | [diff] [blame] | 386 | |
| 387 | /* the following line sets the `error' variable through macros! */ |
David Turner | 7d3a264 | 2002-03-20 10:49:31 +0000 | [diff] [blame] | 388 | if ( FT_STREAM_SEEK( offset ) || FT_FRAME_ENTER( byte_count ) ) |
Werner Lemberg | e72c9fe | 2000-07-31 18:59:02 +0000 | [diff] [blame] | 389 | return error; |
| 390 | |
| 391 | return TT_Err_Ok; |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 392 | } |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 393 | |
| 394 | |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 395 | FT_CALLBACK_DEF( void ) |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 396 | TT_Forget_Glyph_Frame( TT_Loader loader ) |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 397 | { |
| 398 | FT_Stream stream = loader->stream; |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 399 | |
| 400 | |
David Turner | 7d3a264 | 2002-03-20 10:49:31 +0000 | [diff] [blame] | 401 | FT_FRAME_EXIT(); |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 402 | } |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 403 | |
| 404 | |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 405 | FT_CALLBACK_DEF( FT_Error ) |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 406 | TT_Load_Glyph_Header( TT_Loader loader ) |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 407 | { |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 408 | FT_Stream stream = loader->stream; |
| 409 | FT_Int byte_len = loader->byte_len - 10; |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 410 | |
Werner Lemberg | ac81295 | 2002-01-06 16:42:44 +0000 | [diff] [blame] | 411 | |
David Turner | f7f82d7 | 2002-01-06 10:13:40 +0000 | [diff] [blame] | 412 | if ( byte_len < 0 ) |
| 413 | return TT_Err_Invalid_Outline; |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 414 | |
David Turner | a890c29 | 2002-03-22 12:55:23 +0000 | [diff] [blame] | 415 | loader->n_contours = FT_GET_SHORT(); |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 416 | |
David Turner | a890c29 | 2002-03-22 12:55:23 +0000 | [diff] [blame] | 417 | loader->bbox.xMin = FT_GET_SHORT(); |
| 418 | loader->bbox.yMin = FT_GET_SHORT(); |
| 419 | loader->bbox.xMax = FT_GET_SHORT(); |
| 420 | loader->bbox.yMax = FT_GET_SHORT(); |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 421 | |
| 422 | FT_TRACE5(( " # of contours: %d\n", loader->n_contours )); |
| 423 | FT_TRACE5(( " xMin: %4d xMax: %4d\n", loader->bbox.xMin, |
| 424 | loader->bbox.xMax )); |
| 425 | FT_TRACE5(( " yMin: %4d yMax: %4d\n", loader->bbox.yMin, |
| 426 | loader->bbox.yMax )); |
David Turner | f7f82d7 | 2002-01-06 10:13:40 +0000 | [diff] [blame] | 427 | loader->byte_len = byte_len; |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 428 | |
Werner Lemberg | 1429db6 | 2001-04-02 23:54:01 +0000 | [diff] [blame] | 429 | return TT_Err_Ok; |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 430 | } |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 431 | |
| 432 | |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 433 | FT_CALLBACK_DEF( FT_Error ) |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 434 | TT_Load_Simple_Glyph( TT_Loader load ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 435 | { |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 436 | FT_Error error; |
| 437 | FT_Stream stream = load->stream; |
| 438 | FT_GlyphLoader gloader = load->gloader; |
| 439 | FT_Int n_contours = load->n_contours; |
| 440 | FT_Outline* outline; |
| 441 | TT_Face face = (TT_Face)load->face; |
| 442 | TT_GlyphSlot slot = (TT_GlyphSlot)load->glyph; |
| 443 | FT_UShort n_ins; |
| 444 | FT_Int n, n_points; |
| 445 | FT_Int byte_len = load->byte_len; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 446 | |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 447 | FT_Byte *flag, *flag_limit; |
| 448 | FT_Byte c, count; |
| 449 | FT_Vector *vec, *vec_limit; |
| 450 | FT_Pos x; |
| 451 | FT_Short *cont, *cont_limit; |
| 452 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 453 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 454 | /* reading the contours' endpoints & number of points */ |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 455 | cont = gloader->current.outline.contours; |
| 456 | cont_limit = cont + n_contours; |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 457 | |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 458 | /* check space for contours array + instructions count */ |
| 459 | byte_len -= 2 * ( n_contours + 1 ); |
| 460 | if ( byte_len < 0 ) |
| 461 | goto Invalid_Outline; |
Werner Lemberg | ac81295 | 2002-01-06 16:42:44 +0000 | [diff] [blame] | 462 | |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 463 | for ( ; cont < cont_limit; cont++ ) |
| 464 | cont[0] = FT_GET_USHORT(); |
| 465 | |
| 466 | n_points = 0; |
| 467 | if ( n_contours > 0 ) |
| 468 | n_points = cont[-1] + 1; |
| 469 | |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 470 | error = FT_GlyphLoader_CheckPoints( gloader, n_points + 4, 0 ); |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 471 | if ( error ) |
| 472 | goto Fail; |
| 473 | |
| 474 | /* we'd better check the contours table right now */ |
| 475 | outline = &gloader->current.outline; |
| 476 | |
| 477 | for ( cont = outline->contours + 1; cont < cont_limit; cont++ ) |
| 478 | if ( cont[-1] >= cont[0] ) |
David Turner | f7f82d7 | 2002-01-06 10:13:40 +0000 | [diff] [blame] | 479 | goto Invalid_Outline; |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 480 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 481 | /* reading the bytecode instructions */ |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 482 | slot->control_len = 0; |
| 483 | slot->control_data = 0; |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 484 | |
David Turner | a890c29 | 2002-03-22 12:55:23 +0000 | [diff] [blame] | 485 | n_ins = FT_GET_USHORT(); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 486 | |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 487 | FT_TRACE5(( " Instructions size: %u\n", n_ins )); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 488 | |
| 489 | if ( n_ins > face->max_profile.maxSizeOfInstructions ) |
| 490 | { |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 491 | FT_TRACE0(( "TT_Load_Simple_Glyph: Too many instructions!\n" )); |
Werner Lemberg | 1f7f0e8 | 2001-06-06 17:30:41 +0000 | [diff] [blame] | 492 | error = TT_Err_Too_Many_Hints; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 493 | goto Fail; |
| 494 | } |
| 495 | |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 496 | byte_len -= (FT_Int)n_ins; |
David Turner | f7f82d7 | 2002-01-06 10:13:40 +0000 | [diff] [blame] | 497 | if ( byte_len < 0 ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 498 | { |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 499 | FT_TRACE0(( "TT_Load_Simple_Glyph: Instruction count mismatch!\n" )); |
Werner Lemberg | 1f7f0e8 | 2001-06-06 17:30:41 +0000 | [diff] [blame] | 500 | error = TT_Err_Too_Many_Hints; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 501 | goto Fail; |
| 502 | } |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 503 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 504 | #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 505 | |
| 506 | if ( ( load->load_flags & |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 507 | ( FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING ) ) == 0 && |
| 508 | load->instructions ) |
David Turner | 08fdac9 | 2000-02-21 16:01:33 +0000 | [diff] [blame] | 509 | { |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 510 | slot->control_len = n_ins; |
| 511 | slot->control_data = load->instructions; |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 512 | |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 513 | FT_MEM_COPY( load->instructions, stream->cursor, (FT_Long)n_ins ); |
David Turner | 08fdac9 | 2000-02-21 16:01:33 +0000 | [diff] [blame] | 514 | } |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 515 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 516 | #endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 517 | |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 518 | stream->cursor += (FT_Int)n_ins; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 519 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 520 | /* reading the point tags */ |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 521 | flag = (FT_Byte*)outline->tags; |
| 522 | flag_limit = flag + n_points; |
| 523 | |
Werner Lemberg | 685dd4f | 2004-10-13 05:15:44 +0000 | [diff] [blame] | 524 | FT_ASSERT( flag != NULL ); |
| 525 | |
Werner Lemberg | f946fc6 | 2003-12-31 08:48:21 +0000 | [diff] [blame] | 526 | while ( flag < flag_limit ) |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 527 | { |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 528 | if ( --byte_len < 0 ) |
| 529 | goto Invalid_Outline; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 530 | |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 531 | *flag++ = c = FT_GET_BYTE(); |
| 532 | if ( c & 8 ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 533 | { |
David Turner | f7f82d7 | 2002-01-06 10:13:40 +0000 | [diff] [blame] | 534 | if ( --byte_len < 0 ) |
| 535 | goto Invalid_Outline; |
| 536 | |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 537 | count = FT_GET_BYTE(); |
| 538 | if ( flag + (FT_Int)count > flag_limit ) |
| 539 | goto Invalid_Outline; |
David Turner | f7f82d7 | 2002-01-06 10:13:40 +0000 | [diff] [blame] | 540 | |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 541 | for ( ; count > 0; count-- ) |
| 542 | *flag++ = c; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 543 | } |
| 544 | } |
| 545 | |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 546 | /* check that there is enough room to load the coordinates */ |
| 547 | for ( flag = (FT_Byte*)outline->tags; flag < flag_limit; flag++ ) |
| 548 | { |
| 549 | if ( *flag & 2 ) |
| 550 | byte_len -= 1; |
| 551 | else if ( ( *flag & 16 ) == 0 ) |
| 552 | byte_len -= 2; |
| 553 | |
| 554 | if ( *flag & 4 ) |
| 555 | byte_len -= 1; |
| 556 | else if ( ( *flag & 32 ) == 0 ) |
| 557 | byte_len -= 2; |
| 558 | } |
| 559 | |
| 560 | if ( byte_len < 0 ) |
| 561 | goto Invalid_Outline; |
| 562 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 563 | /* reading the X coordinates */ |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 564 | |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 565 | vec = outline->points; |
| 566 | vec_limit = vec + n_points; |
| 567 | flag = (FT_Byte*)outline->tags; |
| 568 | x = 0; |
| 569 | |
| 570 | for ( ; vec < vec_limit; vec++, flag++ ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 571 | { |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 572 | FT_Pos y = 0; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 573 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 574 | |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 575 | if ( *flag & 2 ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 576 | { |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 577 | y = (FT_Pos)FT_GET_BYTE(); |
| 578 | if ( ( *flag & 16 ) == 0 ) |
| 579 | y = -y; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 580 | } |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 581 | else if ( ( *flag & 16 ) == 0 ) |
| 582 | y = (FT_Pos)FT_GET_SHORT(); |
| 583 | |
| 584 | x += y; |
| 585 | vec->x = x; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 586 | } |
| 587 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 588 | /* reading the Y coordinates */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 589 | |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 590 | vec = gloader->current.outline.points; |
| 591 | vec_limit = vec + n_points; |
| 592 | flag = (FT_Byte*)outline->tags; |
| 593 | x = 0; |
| 594 | |
| 595 | for ( ; vec < vec_limit; vec++, flag++ ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 596 | { |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 597 | FT_Pos y = 0; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 598 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 599 | |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 600 | if ( *flag & 4 ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 601 | { |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 602 | y = (FT_Pos)FT_GET_BYTE(); |
| 603 | if ( ( *flag & 32 ) == 0 ) |
| 604 | y = -y; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 605 | } |
Werner Lemberg | 0240d29 | 2003-06-09 15:54:18 +0000 | [diff] [blame] | 606 | else if ( ( *flag & 32 ) == 0 ) |
| 607 | y = (FT_Pos)FT_GET_SHORT(); |
| 608 | |
| 609 | x += y; |
| 610 | vec->y = x; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 611 | } |
| 612 | |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 613 | /* clear the touch tags */ |
| 614 | for ( n = 0; n < n_points; n++ ) |
David Turner | b08fe2d | 2002-08-27 20:20:29 +0000 | [diff] [blame] | 615 | outline->tags[n] &= FT_CURVE_TAG_ON; |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 616 | |
David Turner | 8edbcab | 2001-06-19 08:28:24 +0000 | [diff] [blame] | 617 | outline->n_points = (FT_UShort)n_points; |
| 618 | outline->n_contours = (FT_Short) n_contours; |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 619 | |
David Turner | f7f82d7 | 2002-01-06 10:13:40 +0000 | [diff] [blame] | 620 | load->byte_len = byte_len; |
| 621 | |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 622 | Fail: |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 623 | return error; |
David Turner | f7f82d7 | 2002-01-06 10:13:40 +0000 | [diff] [blame] | 624 | |
| 625 | Invalid_Outline: |
| 626 | error = TT_Err_Invalid_Outline; |
| 627 | goto Fail; |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 628 | } |
| 629 | |
| 630 | |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 631 | FT_CALLBACK_DEF( FT_Error ) |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 632 | TT_Load_Composite_Glyph( TT_Loader loader ) |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 633 | { |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 634 | FT_Error error; |
| 635 | FT_Stream stream = loader->stream; |
| 636 | FT_GlyphLoader gloader = loader->gloader; |
David Turner | eba5ad4 | 2002-03-14 12:56:35 +0000 | [diff] [blame] | 637 | FT_SubGlyph subglyph; |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 638 | FT_UInt num_subglyphs; |
| 639 | FT_Int byte_len = loader->byte_len; |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 640 | |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 641 | |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 642 | num_subglyphs = 0; |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 643 | |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 644 | do |
| 645 | { |
| 646 | FT_Fixed xx, xy, yy, yx; |
| 647 | |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 648 | |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 649 | /* check that we can load a new subglyph */ |
David Turner | eba5ad4 | 2002-03-14 12:56:35 +0000 | [diff] [blame] | 650 | error = FT_GlyphLoader_CheckSubGlyphs( gloader, num_subglyphs + 1 ); |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 651 | if ( error ) |
| 652 | goto Fail; |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 653 | |
Werner Lemberg | ac81295 | 2002-01-06 16:42:44 +0000 | [diff] [blame] | 654 | /* check space */ |
David Turner | f7f82d7 | 2002-01-06 10:13:40 +0000 | [diff] [blame] | 655 | byte_len -= 4; |
| 656 | if ( byte_len < 0 ) |
| 657 | goto Invalid_Composite; |
| 658 | |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 659 | subglyph = gloader->current.subglyphs + num_subglyphs; |
| 660 | |
| 661 | subglyph->arg1 = subglyph->arg2 = 0; |
| 662 | |
David Turner | a890c29 | 2002-03-22 12:55:23 +0000 | [diff] [blame] | 663 | subglyph->flags = FT_GET_USHORT(); |
| 664 | subglyph->index = FT_GET_USHORT(); |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 665 | |
Werner Lemberg | ac81295 | 2002-01-06 16:42:44 +0000 | [diff] [blame] | 666 | /* check space */ |
David Turner | f7f82d7 | 2002-01-06 10:13:40 +0000 | [diff] [blame] | 667 | byte_len -= 2; |
| 668 | if ( subglyph->flags & ARGS_ARE_WORDS ) |
| 669 | byte_len -= 2; |
| 670 | if ( subglyph->flags & WE_HAVE_A_SCALE ) |
| 671 | byte_len -= 2; |
| 672 | else if ( subglyph->flags & WE_HAVE_AN_XY_SCALE ) |
| 673 | byte_len -= 4; |
| 674 | else if ( subglyph->flags & WE_HAVE_A_2X2 ) |
| 675 | byte_len -= 8; |
| 676 | |
| 677 | if ( byte_len < 0 ) |
| 678 | goto Invalid_Composite; |
| 679 | |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 680 | /* read arguments */ |
| 681 | if ( subglyph->flags & ARGS_ARE_WORDS ) |
| 682 | { |
David Turner | a890c29 | 2002-03-22 12:55:23 +0000 | [diff] [blame] | 683 | subglyph->arg1 = FT_GET_SHORT(); |
| 684 | subglyph->arg2 = FT_GET_SHORT(); |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 685 | } |
| 686 | else |
| 687 | { |
David Turner | a890c29 | 2002-03-22 12:55:23 +0000 | [diff] [blame] | 688 | subglyph->arg1 = FT_GET_CHAR(); |
| 689 | subglyph->arg2 = FT_GET_CHAR(); |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 690 | } |
| 691 | |
| 692 | /* read transform */ |
| 693 | xx = yy = 0x10000L; |
| 694 | xy = yx = 0; |
| 695 | |
| 696 | if ( subglyph->flags & WE_HAVE_A_SCALE ) |
| 697 | { |
David Turner | a890c29 | 2002-03-22 12:55:23 +0000 | [diff] [blame] | 698 | xx = (FT_Fixed)FT_GET_SHORT() << 2; |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 699 | yy = xx; |
| 700 | } |
| 701 | else if ( subglyph->flags & WE_HAVE_AN_XY_SCALE ) |
| 702 | { |
David Turner | a890c29 | 2002-03-22 12:55:23 +0000 | [diff] [blame] | 703 | xx = (FT_Fixed)FT_GET_SHORT() << 2; |
| 704 | yy = (FT_Fixed)FT_GET_SHORT() << 2; |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 705 | } |
| 706 | else if ( subglyph->flags & WE_HAVE_A_2X2 ) |
| 707 | { |
David Turner | a890c29 | 2002-03-22 12:55:23 +0000 | [diff] [blame] | 708 | xx = (FT_Fixed)FT_GET_SHORT() << 2; |
David Turner | a890c29 | 2002-03-22 12:55:23 +0000 | [diff] [blame] | 709 | yx = (FT_Fixed)FT_GET_SHORT() << 2; |
David Turner | 318f3be | 2002-06-26 20:30:37 +0000 | [diff] [blame] | 710 | xy = (FT_Fixed)FT_GET_SHORT() << 2; |
David Turner | a890c29 | 2002-03-22 12:55:23 +0000 | [diff] [blame] | 711 | yy = (FT_Fixed)FT_GET_SHORT() << 2; |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 712 | } |
| 713 | |
| 714 | subglyph->transform.xx = xx; |
| 715 | subglyph->transform.xy = xy; |
| 716 | subglyph->transform.yx = yx; |
| 717 | subglyph->transform.yy = yy; |
| 718 | |
| 719 | num_subglyphs++; |
Werner Lemberg | 5811c7c | 2000-07-02 13:53:16 +0000 | [diff] [blame] | 720 | |
Werner Lemberg | dcd2e14 | 2000-06-25 07:43:15 +0000 | [diff] [blame] | 721 | } while ( subglyph->flags & MORE_COMPONENTS ); |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 722 | |
| 723 | gloader->current.num_subglyphs = num_subglyphs; |
| 724 | |
| 725 | #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
| 726 | { |
David Turner | 7d3a264 | 2002-03-20 10:49:31 +0000 | [diff] [blame] | 727 | /* we must undo the FT_FRAME_ENTER in order to point to the */ |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 728 | /* composite instructions, if we find some. */ |
| 729 | /* we will process them later... */ |
| 730 | /* */ |
David Turner | 7d3a264 | 2002-03-20 10:49:31 +0000 | [diff] [blame] | 731 | loader->ins_pos = (FT_ULong)( FT_STREAM_POS() + |
Werner Lemberg | 914b289 | 2001-03-10 17:07:42 +0000 | [diff] [blame] | 732 | stream->cursor - stream->limit ); |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 733 | } |
| 734 | #endif |
| 735 | |
David Turner | f7f82d7 | 2002-01-06 10:13:40 +0000 | [diff] [blame] | 736 | loader->byte_len = byte_len; |
| 737 | |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 738 | Fail: |
| 739 | return error; |
David Turner | f7f82d7 | 2002-01-06 10:13:40 +0000 | [diff] [blame] | 740 | |
| 741 | Invalid_Composite: |
| 742 | error = TT_Err_Invalid_Composite; |
| 743 | goto Fail; |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 744 | } |
| 745 | |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 746 | |
David Turner | bc82f1b | 2002-03-01 02:26:22 +0000 | [diff] [blame] | 747 | FT_LOCAL_DEF( void ) |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 748 | TT_Init_Glyph_Loading( TT_Face face ) |
David Turner | 994d774 | 2000-06-25 04:49:19 +0000 | [diff] [blame] | 749 | { |
| 750 | face->access_glyph_frame = TT_Access_Glyph_Frame; |
| 751 | face->read_glyph_header = TT_Load_Glyph_Header; |
| 752 | face->read_simple_glyph = TT_Load_Simple_Glyph; |
| 753 | face->read_composite_glyph = TT_Load_Composite_Glyph; |
| 754 | face->forget_glyph_frame = TT_Forget_Glyph_Frame; |
| 755 | } |
| 756 | |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 757 | |
| 758 | /*************************************************************************/ |
| 759 | /* */ |
| 760 | /* <Function> */ |
| 761 | /* TT_Process_Simple_Glyph */ |
| 762 | /* */ |
| 763 | /* <Description> */ |
| 764 | /* Once a simple glyph has been loaded, it needs to be processed. */ |
| 765 | /* Usually, this means scaling and hinting through bytecode */ |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 766 | /* interpretation. */ |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 767 | /* */ |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 768 | static FT_Error |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 769 | TT_Process_Simple_Glyph( TT_Loader load, |
| 770 | FT_Bool debug ) |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 771 | { |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 772 | FT_GlyphLoader gloader = load->gloader; |
| 773 | FT_Outline* outline = &gloader->current.outline; |
| 774 | FT_UInt n_points = outline->n_points; |
Werner Lemberg | b5349a9 | 2002-02-19 16:30:15 +0000 | [diff] [blame] | 775 | #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 776 | FT_UInt n_ins; |
Werner Lemberg | b5349a9 | 2002-02-19 16:30:15 +0000 | [diff] [blame] | 777 | #endif |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 778 | TT_GlyphZone zone = &load->zone; |
| 779 | FT_Error error = TT_Err_Ok; |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 780 | |
Werner Lemberg | 58b17f9 | 2000-07-27 23:29:08 +0000 | [diff] [blame] | 781 | FT_UNUSED( debug ); /* used by truetype interpreter only */ |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 782 | |
Werner Lemberg | e4b32a5 | 2000-10-31 20:42:18 +0000 | [diff] [blame] | 783 | |
Werner Lemberg | b5349a9 | 2002-02-19 16:30:15 +0000 | [diff] [blame] | 784 | #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 785 | n_ins = load->glyph->control_len; |
Werner Lemberg | b5349a9 | 2002-02-19 16:30:15 +0000 | [diff] [blame] | 786 | #endif |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 787 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 788 | /* add shadow points */ |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 789 | |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 790 | /* Add two horizontal shadow points at n and n+1. */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 791 | /* We need the left side bearing and advance width. */ |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 792 | /* Add two vertical shadow points at n+2 and n+3. */ |
| 793 | /* We need the top side bearing and advance height. */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 794 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 795 | { |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 796 | FT_Vector* pp1; |
| 797 | FT_Vector* pp2; |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 798 | FT_Vector* pp3; |
| 799 | FT_Vector* pp4; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 800 | |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 801 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 802 | /* pp1 = xMin - lsb */ |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 803 | pp1 = outline->points + n_points; |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 804 | pp1->x = load->bbox.xMin - load->left_bearing; |
| 805 | pp1->y = 0; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 806 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 807 | /* pp2 = pp1 + aw */ |
| 808 | pp2 = pp1 + 1; |
| 809 | pp2->x = pp1->x + load->advance; |
| 810 | pp2->y = 0; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 811 | |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 812 | /* pp3 = top side bearing */ |
| 813 | pp3 = pp1 + 2; |
| 814 | pp3->x = 0; |
| 815 | pp3->y = load->top_bearing + load->bbox.yMax; |
| 816 | |
| 817 | /* pp4 = pp3 - ah */ |
| 818 | pp4 = pp1 + 3; |
| 819 | pp4->x = 0; |
| 820 | pp4->y = pp3->y - load->vadvance; |
| 821 | |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 822 | outline->tags[n_points ] = 0; |
| 823 | outline->tags[n_points + 1] = 0; |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 824 | outline->tags[n_points + 2] = 0; |
| 825 | outline->tags[n_points + 3] = 0; |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 826 | } |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 827 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 828 | /* Note that we return four more points that are not */ |
| 829 | /* part of the glyph outline. */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 830 | |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 831 | n_points += 4; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 832 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 833 | #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT |
| 834 | |
| 835 | if ( ((TT_Face)load->face)->doblend ) |
| 836 | { |
| 837 | /* Deltas apply to the unscaled data. */ |
Werner Lemberg | 2b54eba | 2004-05-07 07:08:14 +0000 | [diff] [blame] | 838 | FT_Vector* deltas; |
| 839 | FT_Memory memory = load->face->memory; |
| 840 | FT_StreamRec saved_stream = *(load->stream); |
| 841 | FT_UInt i; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 842 | |
| 843 | |
Werner Lemberg | 2b54eba | 2004-05-07 07:08:14 +0000 | [diff] [blame] | 844 | /* TT_Vary_Get_Glyph_Deltas uses a frame, thus we have to save */ |
| 845 | /* (and restore) the current one */ |
| 846 | load->stream->cursor = 0; |
| 847 | load->stream->limit = 0; |
| 848 | |
| 849 | error = TT_Vary_Get_Glyph_Deltas( (TT_Face)(load->face), |
| 850 | load->glyph_index, |
| 851 | &deltas, |
| 852 | n_points ); |
| 853 | |
| 854 | *(load->stream) = saved_stream; |
| 855 | |
| 856 | if ( error ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 857 | goto Exit; |
| 858 | |
| 859 | for ( i = 0; i < n_points; ++i ) |
| 860 | { |
| 861 | outline->points[i].x += deltas[i].x; |
| 862 | outline->points[i].y += deltas[i].y; |
| 863 | } |
| 864 | |
| 865 | FT_FREE( deltas ); |
| 866 | } |
| 867 | |
| 868 | #endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */ |
| 869 | |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 870 | /* set up zone for hinting */ |
| 871 | tt_prepare_zone( zone, &gloader->current, 0, 0 ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 872 | |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 873 | /* eventually scale the glyph */ |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 874 | if ( !( load->load_flags & FT_LOAD_NO_SCALE ) ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 875 | { |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 876 | FT_Vector* vec = zone->cur; |
| 877 | FT_Vector* limit = vec + n_points; |
David Turner | 2f0fdb9 | 2004-06-21 21:16:56 +0000 | [diff] [blame] | 878 | FT_Fixed x_scale = ((TT_Size)load->size)->metrics.x_scale; |
| 879 | FT_Fixed y_scale = ((TT_Size)load->size)->metrics.y_scale; |
Werner Lemberg | 5811c7c | 2000-07-02 13:53:16 +0000 | [diff] [blame] | 880 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 881 | /* first scale the glyph points */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 882 | for ( ; vec < limit; vec++ ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 883 | { |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 884 | vec->x = FT_MulFix( vec->x, x_scale ); |
| 885 | vec->y = FT_MulFix( vec->y, y_scale ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 886 | } |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 887 | } |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 888 | |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 889 | cur_to_org( n_points, zone ); |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 890 | |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 891 | /* eventually hint the glyph */ |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 892 | if ( IS_HINTED( load->load_flags ) ) |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 893 | { |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 894 | FT_Pos x = zone->org[n_points-4].x; |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 895 | |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 896 | |
David Turner | 87c0d30 | 2003-12-24 01:10:46 +0000 | [diff] [blame] | 897 | x = FT_PIX_ROUND( x ) - x; |
Werner Lemberg | b9ff415 | 2004-11-19 10:35:52 +0000 | [diff] [blame] | 898 | translate_array( n_points, zone->org, x, 0 ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 899 | |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 900 | org_to_cur( n_points, zone ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 901 | |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 902 | zone->cur[n_points - 3].x = FT_PIX_ROUND( zone->cur[n_points - 3].x ); |
| 903 | zone->cur[n_points - 1].y = FT_PIX_ROUND( zone->cur[n_points - 1].y ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 904 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 905 | #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 906 | |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 907 | /* now consider hinting */ |
| 908 | if ( n_ins > 0 ) |
| 909 | { |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 910 | error = TT_Set_CodeRange( load->exec, tt_coderange_glyph, |
| 911 | load->exec->glyphIns, n_ins ); |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 912 | if ( error ) |
| 913 | goto Exit; |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 914 | |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 915 | load->exec->is_composite = FALSE; |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 916 | load->exec->pts = *zone; |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 917 | load->exec->pts.n_points += 4; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 918 | |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 919 | error = TT_Run_Context( load->exec, debug ); |
| 920 | if ( error && load->exec->pedantic_hinting ) |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 921 | goto Exit; |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 922 | |
Werner Lemberg | 1429db6 | 2001-04-02 23:54:01 +0000 | [diff] [blame] | 923 | error = TT_Err_Ok; /* ignore bytecode errors in non-pedantic mode */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 924 | } |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 925 | |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 926 | #endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 927 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 928 | } |
| 929 | |
| 930 | /* save glyph phantom points */ |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 931 | if ( !load->preserve_pps ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 932 | { |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 933 | load->pp1 = zone->cur[n_points - 4]; |
| 934 | load->pp2 = zone->cur[n_points - 3]; |
| 935 | load->pp3 = zone->cur[n_points - 2]; |
| 936 | load->pp4 = zone->cur[n_points - 1]; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 937 | } |
| 938 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 939 | #if defined( TT_CONFIG_OPTION_BYTECODE_INTERPRETER ) || \ |
| 940 | defined( TT_CONFIG_OPTION_GX_VAR_SUPPORT ) |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 941 | Exit: |
Werner Lemberg | e4b32a5 | 2000-10-31 20:42:18 +0000 | [diff] [blame] | 942 | #endif |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 943 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 944 | return error; |
| 945 | } |
| 946 | |
| 947 | |
| 948 | /*************************************************************************/ |
| 949 | /* */ |
| 950 | /* <Function> */ |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 951 | /* load_truetype_glyph */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 952 | /* */ |
| 953 | /* <Description> */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 954 | /* Loads a given truetype glyph. Handles composites and uses a */ |
| 955 | /* TT_Loader object. */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 956 | /* */ |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 957 | static FT_Error |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 958 | load_truetype_glyph( TT_Loader loader, |
David Turner | 77b68b8 | 2003-01-08 09:59:17 +0000 | [diff] [blame] | 959 | FT_UInt glyph_index, |
| 960 | FT_UInt recurse_count ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 961 | { |
Werner Lemberg | 321cd27 | 2000-07-27 11:20:20 +0000 | [diff] [blame] | 962 | |
| 963 | #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 964 | FT_Stream stream = loader->stream; |
Werner Lemberg | 321cd27 | 2000-07-27 11:20:20 +0000 | [diff] [blame] | 965 | #endif |
| 966 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 967 | FT_Error error; |
Werner Lemberg | 2b54eba | 2004-05-07 07:08:14 +0000 | [diff] [blame] | 968 | TT_Face face = (TT_Face)loader->face; |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 969 | FT_ULong offset; |
| 970 | FT_Int contours_count; |
Graham Asher | 13217f2 | 2002-07-18 15:59:23 +0000 | [diff] [blame] | 971 | FT_UInt num_points, count; |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 972 | FT_Fixed x_scale, y_scale; |
| 973 | FT_GlyphLoader gloader = loader->gloader; |
| 974 | FT_Bool opened_frame = 0; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 975 | |
Graham Asher | 13217f2 | 2002-07-18 15:59:23 +0000 | [diff] [blame] | 976 | #ifdef FT_CONFIG_OPTION_INCREMENTAL |
Werner Lemberg | 2b54eba | 2004-05-07 07:08:14 +0000 | [diff] [blame] | 977 | FT_StreamRec inc_stream; |
| 978 | FT_Data glyph_data; |
| 979 | FT_Bool glyph_data_loaded = 0; |
Graham Asher | 13217f2 | 2002-07-18 15:59:23 +0000 | [diff] [blame] | 980 | #endif |
Werner Lemberg | 58b17f9 | 2000-07-27 23:29:08 +0000 | [diff] [blame] | 981 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 982 | #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT |
| 983 | FT_Vector *deltas; |
| 984 | #endif |
| 985 | |
Werner Lemberg | 6ab5624 | 2003-06-04 07:59:58 +0000 | [diff] [blame] | 986 | |
David Turner | 77b68b8 | 2003-01-08 09:59:17 +0000 | [diff] [blame] | 987 | if ( recurse_count >= TT_MAX_COMPOSITE_RECURSE ) |
| 988 | { |
| 989 | error = TT_Err_Invalid_Composite; |
| 990 | goto Exit; |
| 991 | } |
Werner Lemberg | 7f74a52 | 2002-07-26 09:09:10 +0000 | [diff] [blame] | 992 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 993 | /* check glyph index */ |
Graham Asher | 13217f2 | 2002-07-18 15:59:23 +0000 | [diff] [blame] | 994 | if ( glyph_index >= (FT_UInt)face->root.num_glyphs ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 995 | { |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 996 | error = TT_Err_Invalid_Glyph_Index; |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 997 | goto Exit; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 998 | } |
| 999 | |
David Turner | 861ba62 | 2000-02-15 12:54:51 +0000 | [diff] [blame] | 1000 | loader->glyph_index = glyph_index; |
Werner Lemberg | 0d9165e | 2002-03-07 21:59:59 +0000 | [diff] [blame] | 1001 | num_points = 0; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1002 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1003 | x_scale = 0x10000L; |
| 1004 | y_scale = 0x10000L; |
| 1005 | if ( ( loader->load_flags & FT_LOAD_NO_SCALE ) == 0 ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1006 | { |
David Turner | 2f0fdb9 | 2004-06-21 21:16:56 +0000 | [diff] [blame] | 1007 | x_scale = ((TT_Size)loader->size)->metrics.x_scale; |
| 1008 | y_scale = ((TT_Size)loader->size)->metrics.y_scale; |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1009 | } |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1010 | |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 1011 | /* get metrics, horizontal and vertical */ |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1012 | { |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 1013 | FT_Short left_bearing = 0, top_bearing = 0; |
| 1014 | FT_UShort advance_width = 0, advance_height = 0; |
| 1015 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1016 | |
Graham Asher | 46960df | 2003-02-13 17:49:27 +0000 | [diff] [blame] | 1017 | Get_HMetrics( face, glyph_index, |
| 1018 | (FT_Bool)!( loader->load_flags & |
| 1019 | FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH ), |
| 1020 | &left_bearing, |
| 1021 | &advance_width ); |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 1022 | Get_VMetrics( face, glyph_index, |
| 1023 | (FT_Bool)!( loader->load_flags & |
| 1024 | FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH ), |
| 1025 | &top_bearing, |
| 1026 | &advance_height ); |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1027 | |
Graham Asher | 46960df | 2003-02-13 17:49:27 +0000 | [diff] [blame] | 1028 | #ifdef FT_CONFIG_OPTION_INCREMENTAL |
Werner Lemberg | 7f74a52 | 2002-07-26 09:09:10 +0000 | [diff] [blame] | 1029 | |
| 1030 | /* If this is an incrementally loaded font see if there are */ |
| 1031 | /* overriding metrics for this glyph. */ |
Graham Asher | ce12182 | 2002-08-01 15:29:17 +0000 | [diff] [blame] | 1032 | if ( face->root.internal->incremental_interface && |
| 1033 | face->root.internal->incremental_interface->funcs->get_glyph_metrics ) |
Graham Asher | 13217f2 | 2002-07-18 15:59:23 +0000 | [diff] [blame] | 1034 | { |
Graham Asher | 46960df | 2003-02-13 17:49:27 +0000 | [diff] [blame] | 1035 | FT_Incremental_MetricsRec metrics; |
Werner Lemberg | 7f74a52 | 2002-07-26 09:09:10 +0000 | [diff] [blame] | 1036 | |
Werner Lemberg | b442ca1 | 2003-04-23 15:50:27 +0000 | [diff] [blame] | 1037 | |
| 1038 | metrics.bearing_x = left_bearing; |
| 1039 | metrics.bearing_y = 0; |
| 1040 | metrics.advance = advance_width; |
Graham Asher | ce12182 | 2002-08-01 15:29:17 +0000 | [diff] [blame] | 1041 | error = face->root.internal->incremental_interface->funcs->get_glyph_metrics( |
| 1042 | face->root.internal->incremental_interface->object, |
Graham Asher | 46960df | 2003-02-13 17:49:27 +0000 | [diff] [blame] | 1043 | glyph_index, FALSE, &metrics ); |
Werner Lemberg | 7f74a52 | 2002-07-26 09:09:10 +0000 | [diff] [blame] | 1044 | if ( error ) |
| 1045 | goto Exit; |
Graham Asher | 46960df | 2003-02-13 17:49:27 +0000 | [diff] [blame] | 1046 | left_bearing = (FT_Short)metrics.bearing_x; |
| 1047 | advance_width = (FT_UShort)metrics.advance; |
Graham Asher | 13217f2 | 2002-07-18 15:59:23 +0000 | [diff] [blame] | 1048 | } |
| 1049 | |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 1050 | # if 0 |
| 1051 | /* GWW: Do I do the same for vertical metrics ??? */ |
| 1052 | if ( face->root.internal->incremental_interface && |
| 1053 | face->root.internal->incremental_interface->funcs->get_glyph_metrics ) |
| 1054 | { |
| 1055 | FT_Incremental_MetricsRec metrics; |
| 1056 | |
| 1057 | |
| 1058 | metrics.bearing_x = 0; |
| 1059 | metrics.bearing_y = top_bearing; |
| 1060 | metrics.advance = advance_height; |
| 1061 | error = face->root.internal->incremental_interface->funcs->get_glyph_metrics( |
| 1062 | face->root.internal->incremental_interface->object, |
| 1063 | glyph_index, TRUE, &metrics ); |
| 1064 | if ( error ) |
| 1065 | goto Exit; |
| 1066 | top_bearing = (FT_Short)metrics.bearing_y; |
| 1067 | advance_height = (FT_UShort)metrics.advance; |
| 1068 | } |
| 1069 | # endif |
| 1070 | |
Werner Lemberg | 7f74a52 | 2002-07-26 09:09:10 +0000 | [diff] [blame] | 1071 | #endif /* FT_CONFIG_OPTION_INCREMENTAL */ |
Graham Asher | 13217f2 | 2002-07-18 15:59:23 +0000 | [diff] [blame] | 1072 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1073 | loader->left_bearing = left_bearing; |
| 1074 | loader->advance = advance_width; |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 1075 | loader->top_bearing = top_bearing; |
| 1076 | loader->vadvance = advance_height; |
David Turner | 57d4de0 | 2001-06-08 13:29:36 +0000 | [diff] [blame] | 1077 | |
| 1078 | if ( !loader->linear_def ) |
| 1079 | { |
| 1080 | loader->linear_def = 1; |
| 1081 | loader->linear = advance_width; |
| 1082 | } |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1083 | } |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1084 | |
Graham Asher | 13217f2 | 2002-07-18 15:59:23 +0000 | [diff] [blame] | 1085 | #ifdef FT_CONFIG_OPTION_INCREMENTAL |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1086 | |
Werner Lemberg | 7f74a52 | 2002-07-26 09:09:10 +0000 | [diff] [blame] | 1087 | /* Set `offset' to the start of the glyph program relative to the */ |
| 1088 | /* start of the 'glyf' table, and `count' to the length of the */ |
| 1089 | /* glyph program in bytes. */ |
| 1090 | /* */ |
| 1091 | /* If we are loading glyph data via the incremental interface, set */ |
| 1092 | /* the loader stream to a memory stream reading the data returned */ |
| 1093 | /* by the interface. */ |
| 1094 | |
Graham Asher | ce12182 | 2002-08-01 15:29:17 +0000 | [diff] [blame] | 1095 | if ( face->root.internal->incremental_interface ) |
Graham Asher | 13217f2 | 2002-07-18 15:59:23 +0000 | [diff] [blame] | 1096 | { |
Graham Asher | ce12182 | 2002-08-01 15:29:17 +0000 | [diff] [blame] | 1097 | error = face->root.internal->incremental_interface->funcs->get_glyph_data( |
| 1098 | face->root.internal->incremental_interface->object, |
| 1099 | glyph_index, &glyph_data ); |
Werner Lemberg | 7f74a52 | 2002-07-26 09:09:10 +0000 | [diff] [blame] | 1100 | if ( error ) |
Graham Asher | 13217f2 | 2002-07-18 15:59:23 +0000 | [diff] [blame] | 1101 | goto Exit; |
Werner Lemberg | 7f74a52 | 2002-07-26 09:09:10 +0000 | [diff] [blame] | 1102 | |
Graham Asher | ce12182 | 2002-08-01 15:29:17 +0000 | [diff] [blame] | 1103 | glyph_data_loaded = 1; |
Werner Lemberg | 3c403e4 | 2002-08-06 21:47:40 +0000 | [diff] [blame] | 1104 | offset = 0; |
| 1105 | count = glyph_data.length; |
| 1106 | |
Werner Lemberg | b3d5e9c | 2002-07-28 05:05:24 +0000 | [diff] [blame] | 1107 | FT_MEM_ZERO( &inc_stream, sizeof ( inc_stream ) ); |
Werner Lemberg | 3c403e4 | 2002-08-06 21:47:40 +0000 | [diff] [blame] | 1108 | FT_Stream_OpenMemory( &inc_stream, |
| 1109 | glyph_data.pointer, glyph_data.length ); |
| 1110 | |
Graham Asher | 13217f2 | 2002-07-18 15:59:23 +0000 | [diff] [blame] | 1111 | loader->stream = &inc_stream; |
| 1112 | } |
| 1113 | else |
Werner Lemberg | 7f74a52 | 2002-07-26 09:09:10 +0000 | [diff] [blame] | 1114 | |
| 1115 | #endif /* FT_CONFIG_OPTION_INCREMENTAL */ |
Graham Asher | 13217f2 | 2002-07-18 15:59:23 +0000 | [diff] [blame] | 1116 | |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 1117 | offset = tt_face_get_location( face, glyph_index, &count ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1118 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1119 | if ( count == 0 ) |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1120 | { |
| 1121 | /* as described by Frederic Loyer, these are spaces, and */ |
| 1122 | /* not the unknown glyph. */ |
| 1123 | loader->bbox.xMin = 0; |
| 1124 | loader->bbox.xMax = 0; |
| 1125 | loader->bbox.yMin = 0; |
| 1126 | loader->bbox.yMax = 0; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1127 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1128 | loader->pp1.x = 0; |
| 1129 | loader->pp2.x = loader->advance; |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 1130 | loader->pp3.y = 0; |
| 1131 | loader->pp4.y = loader->pp3.y-loader->vadvance; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1132 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1133 | #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT |
| 1134 | if ( ((TT_Face)(loader->face))->doblend ) |
| 1135 | { |
| 1136 | /* this must be done before scaling */ |
| 1137 | FT_Memory memory = loader->face->memory; |
| 1138 | |
| 1139 | |
Werner Lemberg | 5afaa67 | 2004-06-28 14:19:15 +0000 | [diff] [blame] | 1140 | error = TT_Vary_Get_Glyph_Deltas( (TT_Face)(loader->face), |
| 1141 | glyph_index, &deltas, 4 ); |
David Turner | c28b8c1 | 2004-06-24 20:18:24 +0000 | [diff] [blame] | 1142 | if ( error ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1143 | goto Exit; |
| 1144 | |
| 1145 | loader->pp1.x += deltas[0].x; loader->pp1.y += deltas[0].y; |
| 1146 | loader->pp2.x += deltas[1].x; loader->pp2.y += deltas[1].y; |
| 1147 | loader->pp3.x += deltas[2].x; loader->pp3.y += deltas[2].y; |
| 1148 | loader->pp4.x += deltas[3].x; loader->pp4.y += deltas[3].y; |
| 1149 | |
| 1150 | FT_FREE( deltas ); |
| 1151 | } |
| 1152 | #endif |
| 1153 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1154 | if ( ( loader->load_flags & FT_LOAD_NO_SCALE ) == 0 ) |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 1155 | { |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1156 | loader->pp2.x = FT_MulFix( loader->pp2.x, x_scale ); |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 1157 | loader->pp4.y = FT_MulFix( loader->pp4.y, y_scale ); |
| 1158 | } |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1159 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1160 | #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
Werner Lemberg | dcd2e14 | 2000-06-25 07:43:15 +0000 | [diff] [blame] | 1161 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1162 | if ( loader->exec ) |
David Turner | 7bb7fed | 2000-02-28 11:23:36 +0000 | [diff] [blame] | 1163 | loader->exec->glyphSize = 0; |
Werner Lemberg | dcd2e14 | 2000-06-25 07:43:15 +0000 | [diff] [blame] | 1164 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1165 | #endif |
Werner Lemberg | 5811c7c | 2000-07-02 13:53:16 +0000 | [diff] [blame] | 1166 | |
Werner Lemberg | 1429db6 | 2001-04-02 23:54:01 +0000 | [diff] [blame] | 1167 | error = TT_Err_Ok; |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 1168 | goto Exit; |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1169 | } |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1170 | |
Werner Lemberg | ac81295 | 2002-01-06 16:42:44 +0000 | [diff] [blame] | 1171 | loader->byte_len = (FT_Int)count; |
David Turner | f7f82d7 | 2002-01-06 10:13:40 +0000 | [diff] [blame] | 1172 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1173 | offset = loader->glyf_offset + offset; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1174 | |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 1175 | /* access glyph frame */ |
David Turner | 994d774 | 2000-06-25 04:49:19 +0000 | [diff] [blame] | 1176 | error = face->access_glyph_frame( loader, glyph_index, offset, count ); |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 1177 | if ( error ) |
| 1178 | goto Exit; |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 1179 | |
| 1180 | opened_frame = 1; |
| 1181 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1182 | /* read first glyph header */ |
David Turner | 994d774 | 2000-06-25 04:49:19 +0000 | [diff] [blame] | 1183 | error = face->read_glyph_header( loader ); |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 1184 | if ( error ) |
| 1185 | goto Fail; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1186 | |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 1187 | contours_count = loader->n_contours; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1188 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1189 | count -= 10; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1190 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1191 | loader->pp1.x = loader->bbox.xMin - loader->left_bearing; |
| 1192 | loader->pp1.y = 0; |
| 1193 | loader->pp2.x = loader->pp1.x + loader->advance; |
| 1194 | loader->pp2.y = 0; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1195 | |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 1196 | loader->pp3.x = 0; |
| 1197 | loader->pp3.y = loader->top_bearing + loader->bbox.yMax; |
| 1198 | loader->pp4.x = 0; |
| 1199 | loader->pp4.y = loader->pp3.y - loader->vadvance; |
| 1200 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1201 | /***********************************************************************/ |
| 1202 | /***********************************************************************/ |
| 1203 | /***********************************************************************/ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1204 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1205 | /* if it is a simple glyph, load it */ |
| 1206 | |
| 1207 | if ( contours_count >= 0 ) |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1208 | { |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1209 | /* check that we can add the contours to the glyph */ |
David Turner | eba5ad4 | 2002-03-14 12:56:35 +0000 | [diff] [blame] | 1210 | error = FT_GlyphLoader_CheckPoints( gloader, 0, contours_count ); |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 1211 | if ( error ) |
| 1212 | goto Fail; |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1213 | |
David Turner | 994d774 | 2000-06-25 04:49:19 +0000 | [diff] [blame] | 1214 | error = face->read_simple_glyph( loader ); |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 1215 | if ( error ) |
| 1216 | goto Fail; |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 1217 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1218 | #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
Werner Lemberg | 5811c7c | 2000-07-02 13:53:16 +0000 | [diff] [blame] | 1219 | |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 1220 | { |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 1221 | TT_Size size = (TT_Size)loader->size; |
Werner Lemberg | dcd2e14 | 2000-06-25 07:43:15 +0000 | [diff] [blame] | 1222 | |
| 1223 | |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 1224 | error = TT_Process_Simple_Glyph( loader, |
| 1225 | (FT_Bool)( size && size->debug ) ); |
| 1226 | } |
Werner Lemberg | dcd2e14 | 2000-06-25 07:43:15 +0000 | [diff] [blame] | 1227 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1228 | #else |
Werner Lemberg | dcd2e14 | 2000-06-25 07:43:15 +0000 | [diff] [blame] | 1229 | |
David Turner | 5fe4c00 | 2000-07-26 19:04:08 +0000 | [diff] [blame] | 1230 | error = TT_Process_Simple_Glyph( loader, 0 ); |
Werner Lemberg | dcd2e14 | 2000-06-25 07:43:15 +0000 | [diff] [blame] | 1231 | |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1232 | #endif |
Werner Lemberg | dcd2e14 | 2000-06-25 07:43:15 +0000 | [diff] [blame] | 1233 | |
| 1234 | if ( error ) |
| 1235 | goto Fail; |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1236 | |
| 1237 | FT_GlyphLoader_Add( gloader ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1238 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1239 | /* Note: We could have put the simple loader source there */ |
| 1240 | /* but the code is fat enough already :-) */ |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1241 | } |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1242 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1243 | /***********************************************************************/ |
| 1244 | /***********************************************************************/ |
| 1245 | /***********************************************************************/ |
| 1246 | |
| 1247 | /* otherwise, load a composite! */ |
David Turner | 77b68b8 | 2003-01-08 09:59:17 +0000 | [diff] [blame] | 1248 | else if ( contours_count == -1 ) |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1249 | { |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 1250 | TT_GlyphSlot glyph = (TT_GlyphSlot)loader->glyph; |
Werner Lemberg | b5349a9 | 2002-02-19 16:30:15 +0000 | [diff] [blame] | 1251 | FT_UInt start_point; |
| 1252 | #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
| 1253 | FT_UInt start_contour; |
David Turner | c6a9220 | 2000-07-04 18:12:13 +0000 | [diff] [blame] | 1254 | FT_ULong ins_pos; /* position of composite instructions, if any */ |
Werner Lemberg | b5349a9 | 2002-02-19 16:30:15 +0000 | [diff] [blame] | 1255 | #endif |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 1256 | |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 1257 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1258 | /* for each subglyph, read composite header */ |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1259 | start_point = gloader->base.outline.n_points; |
Werner Lemberg | b5349a9 | 2002-02-19 16:30:15 +0000 | [diff] [blame] | 1260 | #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1261 | start_contour = gloader->base.outline.n_contours; |
Werner Lemberg | b5349a9 | 2002-02-19 16:30:15 +0000 | [diff] [blame] | 1262 | #endif |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 1263 | |
David Turner | 994d774 | 2000-06-25 04:49:19 +0000 | [diff] [blame] | 1264 | error = face->read_composite_glyph( loader ); |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 1265 | if ( error ) |
| 1266 | goto Fail; |
David Turner | ed7f62a | 2000-03-28 11:19:28 +0000 | [diff] [blame] | 1267 | |
Werner Lemberg | b5349a9 | 2002-02-19 16:30:15 +0000 | [diff] [blame] | 1268 | #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
David Turner | c6a9220 | 2000-07-04 18:12:13 +0000 | [diff] [blame] | 1269 | ins_pos = loader->ins_pos; |
Werner Lemberg | b5349a9 | 2002-02-19 16:30:15 +0000 | [diff] [blame] | 1270 | #endif |
David Turner | 994d774 | 2000-06-25 04:49:19 +0000 | [diff] [blame] | 1271 | face->forget_glyph_frame( loader ); |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 1272 | opened_frame = 0; |
| 1273 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1274 | #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT |
| 1275 | |
| 1276 | if ( face->doblend ) |
| 1277 | { |
| 1278 | FT_Int i, limit; |
| 1279 | FT_SubGlyph subglyph; |
| 1280 | FT_Memory memory = face->root.memory; |
| 1281 | |
| 1282 | |
| 1283 | /* this provides additional offsets */ |
| 1284 | /* for each component's translation */ |
| 1285 | |
| 1286 | if ( (error = TT_Vary_Get_Glyph_Deltas( |
| 1287 | face, |
| 1288 | glyph_index, |
| 1289 | &deltas, |
David Turner | c28b8c1 | 2004-06-24 20:18:24 +0000 | [diff] [blame] | 1290 | gloader->current.num_subglyphs + 4 )) != 0 ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1291 | goto Exit; |
| 1292 | |
| 1293 | /* Note: No subglyph reallocation here, our pointers are stable. */ |
| 1294 | subglyph = gloader->current.subglyphs + gloader->base.num_subglyphs; |
| 1295 | limit = gloader->current.num_subglyphs; |
| 1296 | |
| 1297 | for ( i = 0; i < limit; ++i, ++subglyph ) |
| 1298 | { |
| 1299 | if ( subglyph->flags & ARGS_ARE_XY_VALUES ) |
| 1300 | { |
| 1301 | subglyph->arg1 += deltas[i].x; |
| 1302 | subglyph->arg2 += deltas[i].y; |
| 1303 | } |
| 1304 | } |
| 1305 | |
| 1306 | loader->pp1.x += deltas[i + 0].x; loader->pp1.y += deltas[i + 0].y; |
| 1307 | loader->pp2.x += deltas[i + 1].x; loader->pp2.y += deltas[i + 1].y; |
| 1308 | loader->pp3.x += deltas[i + 2].x; loader->pp3.y += deltas[i + 2].y; |
| 1309 | loader->pp4.x += deltas[i + 3].x; loader->pp4.y += deltas[i + 3].y; |
| 1310 | |
| 1311 | FT_FREE( deltas ); |
| 1312 | } |
| 1313 | |
| 1314 | #endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */ |
| 1315 | |
| 1316 | if ( ( loader->load_flags & FT_LOAD_NO_SCALE ) == 0 ) |
| 1317 | { |
| 1318 | loader->pp1.x = FT_MulFix( loader->pp1.x, x_scale ); |
| 1319 | loader->pp2.x = FT_MulFix( loader->pp2.x, x_scale ); |
| 1320 | loader->pp3.y = FT_MulFix( loader->pp3.y, y_scale ); |
| 1321 | loader->pp4.y = FT_MulFix( loader->pp4.y, y_scale ); |
| 1322 | } |
| 1323 | |
David Turner | ed7f62a | 2000-03-28 11:19:28 +0000 | [diff] [blame] | 1324 | /* if the flag FT_LOAD_NO_RECURSE is set, we return the subglyph */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1325 | /* `as is' in the glyph slot (the client application will be */ |
Werner Lemberg | eed446d | 2002-08-16 12:46:52 +0000 | [diff] [blame] | 1326 | /* responsible for interpreting these data)... */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1327 | /* */ |
David Turner | ed7f62a | 2000-03-28 11:19:28 +0000 | [diff] [blame] | 1328 | if ( loader->load_flags & FT_LOAD_NO_RECURSE ) |
| 1329 | { |
David Turner | ed7f62a | 2000-03-28 11:19:28 +0000 | [diff] [blame] | 1330 | /* set up remaining glyph fields */ |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1331 | FT_GlyphLoader_Add( gloader ); |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 1332 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 1333 | glyph->num_subglyphs = gloader->base.num_subglyphs; |
David Turner | b08fe2d | 2002-08-27 20:20:29 +0000 | [diff] [blame] | 1334 | glyph->format = FT_GLYPH_FORMAT_COMPOSITE; |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 1335 | glyph->subglyphs = gloader->base.subglyphs; |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 1336 | |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 1337 | goto Exit; |
David Turner | ed7f62a | 2000-03-28 11:19:28 +0000 | [diff] [blame] | 1338 | } |
| 1339 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1340 | /*********************************************************************/ |
Werner Lemberg | dcd2e14 | 2000-06-25 07:43:15 +0000 | [diff] [blame] | 1341 | /*********************************************************************/ |
| 1342 | /*********************************************************************/ |
| 1343 | |
| 1344 | /* Now, read each subglyph independently. */ |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1345 | { |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 1346 | FT_Int n, num_base_points, num_new_points; |
| 1347 | FT_SubGlyph subglyph = 0; |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 1348 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 1349 | FT_UInt num_subglyphs = gloader->current.num_subglyphs; |
| 1350 | FT_UInt num_base_subgs = gloader->base.num_subglyphs; |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 1351 | |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 1352 | |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1353 | FT_GlyphLoader_Add( gloader ); |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 1354 | |
David Turner | 74abee8 | 2000-06-27 23:31:53 +0000 | [diff] [blame] | 1355 | for ( n = 0; n < (FT_Int)num_subglyphs; n++ ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1356 | { |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 1357 | FT_Vector pp1, pp2, pp3, pp4; |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 1358 | FT_Pos x, y; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1359 | |
Werner Lemberg | dcd2e14 | 2000-06-25 07:43:15 +0000 | [diff] [blame] | 1360 | |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 1361 | /* Each time we call load_truetype_glyph in this loop, the */ |
| 1362 | /* value of `gloader.base.subglyphs' can change due to table */ |
| 1363 | /* reallocations. We thus need to recompute the subglyph */ |
| 1364 | /* pointer on each iteration. */ |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1365 | subglyph = gloader->base.subglyphs + num_base_subgs + n; |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1366 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1367 | pp1 = loader->pp1; |
| 1368 | pp2 = loader->pp2; |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 1369 | pp3 = loader->pp3; |
| 1370 | pp4 = loader->pp4; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1371 | |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1372 | num_base_points = gloader->base.outline.n_points; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1373 | |
David Turner | 77b68b8 | 2003-01-08 09:59:17 +0000 | [diff] [blame] | 1374 | error = load_truetype_glyph( loader, subglyph->index, |
Werner Lemberg | b442ca1 | 2003-04-23 15:50:27 +0000 | [diff] [blame] | 1375 | recurse_count + 1 ); |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1376 | if ( error ) |
| 1377 | goto Fail; |
David Turner | 3475e7f | 2000-05-17 20:56:01 +0000 | [diff] [blame] | 1378 | |
David Turner | 61d6b2b | 2001-05-16 17:49:07 +0000 | [diff] [blame] | 1379 | /* restore subglyph pointer */ |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1380 | subglyph = gloader->base.subglyphs + num_base_subgs + n; |
| 1381 | |
David Turner | 7bb7fed | 2000-02-28 11:23:36 +0000 | [diff] [blame] | 1382 | if ( subglyph->flags & USE_MY_METRICS ) |
| 1383 | { |
| 1384 | pp1 = loader->pp1; |
| 1385 | pp2 = loader->pp2; |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 1386 | pp3 = loader->pp3; |
| 1387 | pp4 = loader->pp4; |
David Turner | 7bb7fed | 2000-02-28 11:23:36 +0000 | [diff] [blame] | 1388 | } |
| 1389 | else |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1390 | { |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1391 | loader->pp1 = pp1; |
| 1392 | loader->pp2 = pp2; |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 1393 | loader->pp3 = pp3; |
| 1394 | loader->pp4 = pp4; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1395 | } |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1396 | |
Werner Lemberg | dcd2e14 | 2000-06-25 07:43:15 +0000 | [diff] [blame] | 1397 | num_points = gloader->base.outline.n_points; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1398 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1399 | num_new_points = num_points - num_base_points; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1400 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1401 | /* now perform the transform required for this subglyph */ |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1402 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1403 | if ( subglyph->flags & ( WE_HAVE_A_SCALE | |
| 1404 | WE_HAVE_AN_XY_SCALE | |
| 1405 | WE_HAVE_A_2X2 ) ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1406 | { |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 1407 | FT_Vector* cur = gloader->base.outline.points + |
| 1408 | num_base_points; |
| 1409 | FT_Vector* org = gloader->base.extra_points + |
| 1410 | num_base_points; |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 1411 | FT_Vector* limit = cur + num_new_points; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1412 | |
Werner Lemberg | dcd2e14 | 2000-06-25 07:43:15 +0000 | [diff] [blame] | 1413 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1414 | for ( ; cur < limit; cur++, org++ ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1415 | { |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1416 | FT_Vector_Transform( cur, &subglyph->transform ); |
| 1417 | FT_Vector_Transform( org, &subglyph->transform ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1418 | } |
| 1419 | } |
| 1420 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1421 | /* apply offset */ |
| 1422 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1423 | if ( !( subglyph->flags & ARGS_ARE_XY_VALUES ) ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1424 | { |
David Turner | 74abee8 | 2000-06-27 23:31:53 +0000 | [diff] [blame] | 1425 | FT_UInt k = subglyph->arg1; |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1426 | FT_UInt l = subglyph->arg2; |
| 1427 | FT_Vector* p1; |
| 1428 | FT_Vector* p2; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1429 | |
Werner Lemberg | deb4e98 | 2000-06-29 03:14:25 +0000 | [diff] [blame] | 1430 | |
David Turner | 74abee8 | 2000-06-27 23:31:53 +0000 | [diff] [blame] | 1431 | if ( start_point + k >= (FT_UInt)num_base_points || |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1432 | l >= (FT_UInt)num_new_points ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1433 | { |
| 1434 | error = TT_Err_Invalid_Composite; |
| 1435 | goto Fail; |
| 1436 | } |
| 1437 | |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1438 | l += num_base_points; |
| 1439 | |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1440 | p1 = gloader->base.outline.points + start_point + k; |
| 1441 | p2 = gloader->base.outline.points + start_point + l; |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 1442 | |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1443 | x = p1->x - p2->x; |
| 1444 | y = p1->y - p2->y; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1445 | } |
| 1446 | else |
| 1447 | { |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1448 | x = subglyph->arg1; |
| 1449 | y = subglyph->arg2; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1450 | |
Werner Lemberg | eed446d | 2002-08-16 12:46:52 +0000 | [diff] [blame] | 1451 | /* Use a default value dependent on */ |
| 1452 | /* TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED. This is useful for old TT */ |
| 1453 | /* fonts which don't set the xxx_COMPONENT_OFFSET bit. */ |
| 1454 | |
| 1455 | #ifdef TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED |
| 1456 | if ( !( subglyph->flags & UNSCALED_COMPONENT_OFFSET ) && |
| 1457 | #else |
| 1458 | if ( ( subglyph->flags & SCALED_COMPONENT_OFFSET ) && |
| 1459 | #endif |
| 1460 | ( subglyph->flags & ( WE_HAVE_A_SCALE | |
| 1461 | WE_HAVE_AN_XY_SCALE | |
| 1462 | WE_HAVE_A_2X2 )) ) |
| 1463 | { |
| 1464 | #if 0 |
| 1465 | |
| 1466 | /*************************************************************************/ |
| 1467 | /* */ |
| 1468 | /* This algorithm is what Apple documents. But it doesn't work. */ |
| 1469 | /* */ |
| 1470 | int a = subglyph->transform.xx > 0 ? subglyph->transform.xx |
| 1471 | : -subglyph->transform.xx; |
| 1472 | int b = subglyph->transform.yx > 0 ? subglyph->transform.yx |
| 1473 | : -subglyph->transform.yx; |
| 1474 | int c = subglyph->transform.xy > 0 ? subglyph->transform.xy |
| 1475 | : -subglyph->transform.xy; |
| 1476 | int d = subglyph->transform.yy > 0 ? subglyph->transform.yy |
| 1477 | : -subglyph->transform.yy; |
| 1478 | int m = a > b ? a : b; |
| 1479 | int n = c > d ? c : d; |
| 1480 | |
| 1481 | |
| 1482 | if ( a - b <= 33 && a - b >= -33 ) |
| 1483 | m *= 2; |
| 1484 | if ( c - d <= 33 && c - d >= -33 ) |
| 1485 | n *= 2; |
| 1486 | x = FT_MulFix( x, m ); |
| 1487 | y = FT_MulFix( y, n ); |
| 1488 | |
| 1489 | #else /* 0 */ |
| 1490 | |
| 1491 | /*************************************************************************/ |
| 1492 | /* */ |
| 1493 | /* This algorithm is a guess and works much better than the above. */ |
| 1494 | /* */ |
Werner Lemberg | 7386197 | 2003-06-05 04:31:05 +0000 | [diff] [blame] | 1495 | FT_Fixed mac_xscale = FT_SqrtFixed( |
| 1496 | FT_MulFix( subglyph->transform.xx, |
| 1497 | subglyph->transform.xx ) + |
| 1498 | FT_MulFix( subglyph->transform.xy, |
| 1499 | subglyph->transform.xy) ); |
| 1500 | FT_Fixed mac_yscale = FT_SqrtFixed( |
| 1501 | FT_MulFix( subglyph->transform.yy, |
| 1502 | subglyph->transform.yy ) + |
| 1503 | FT_MulFix( subglyph->transform.yx, |
| 1504 | subglyph->transform.yx ) ); |
Werner Lemberg | eed446d | 2002-08-16 12:46:52 +0000 | [diff] [blame] | 1505 | |
| 1506 | |
| 1507 | x = FT_MulFix( x, mac_xscale ); |
| 1508 | y = FT_MulFix( y, mac_yscale ); |
| 1509 | #endif /* 0 */ |
| 1510 | |
| 1511 | } |
| 1512 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1513 | if ( !( loader->load_flags & FT_LOAD_NO_SCALE ) ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1514 | { |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1515 | x = FT_MulFix( x, x_scale ); |
| 1516 | y = FT_MulFix( y, y_scale ); |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1517 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1518 | if ( subglyph->flags & ROUND_XY_TO_GRID ) |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1519 | { |
David Turner | 87c0d30 | 2003-12-24 01:10:46 +0000 | [diff] [blame] | 1520 | x = FT_PIX_ROUND( x ); |
| 1521 | y = FT_PIX_ROUND( y ); |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1522 | } |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1523 | } |
| 1524 | } |
| 1525 | |
Werner Lemberg | 87a2bc7 | 2002-06-20 10:57:04 +0000 | [diff] [blame] | 1526 | if ( x || y ) |
David Turner | 61d6b2b | 2001-05-16 17:49:07 +0000 | [diff] [blame] | 1527 | { |
| 1528 | translate_array( num_new_points, |
| 1529 | gloader->base.outline.points + num_base_points, |
| 1530 | x, y ); |
| 1531 | |
| 1532 | translate_array( num_new_points, |
| 1533 | gloader->base.extra_points + num_base_points, |
| 1534 | x, y ); |
| 1535 | } |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1536 | } |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1537 | |
Werner Lemberg | dcd2e14 | 2000-06-25 07:43:15 +0000 | [diff] [blame] | 1538 | /*******************************************************************/ |
| 1539 | /*******************************************************************/ |
| 1540 | /*******************************************************************/ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1541 | |
Werner Lemberg | 5811c7c | 2000-07-02 13:53:16 +0000 | [diff] [blame] | 1542 | /* we have finished loading all sub-glyphs; now, look for */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1543 | /* instructions for this composite! */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1544 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1545 | #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1546 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1547 | if ( num_subglyphs > 0 && |
| 1548 | loader->exec && |
Werner Lemberg | a7d2f5e | 2002-02-19 01:12:23 +0000 | [diff] [blame] | 1549 | ins_pos > 0 && |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1550 | subglyph->flags & WE_HAVE_INSTR ) |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1551 | { |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 1552 | FT_UShort n_ins; |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1553 | TT_ExecContext exec = loader->exec; |
David Turner | b5713c5 | 2002-03-14 11:26:29 +0000 | [diff] [blame] | 1554 | TT_GlyphZone pts; |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 1555 | FT_Vector* pp1; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1556 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1557 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1558 | /* read size of instructions */ |
David Turner | 7d3a264 | 2002-03-20 10:49:31 +0000 | [diff] [blame] | 1559 | if ( FT_STREAM_SEEK( ins_pos ) || |
David Turner | a890c29 | 2002-03-22 12:55:23 +0000 | [diff] [blame] | 1560 | FT_READ_USHORT( n_ins ) ) |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1561 | goto Fail; |
Werner Lemberg | 1c0d4ac | 2000-06-06 20:41:48 +0000 | [diff] [blame] | 1562 | FT_TRACE5(( " Instructions size = %d\n", n_ins )); |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1563 | |
Werner Lemberg | 5811c7c | 2000-07-02 13:53:16 +0000 | [diff] [blame] | 1564 | /* in some fonts? */ |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 1565 | if ( n_ins == 0xFFFFU ) |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 1566 | n_ins = 0; |
| 1567 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1568 | /* check it */ |
| 1569 | if ( n_ins > face->max_profile.maxSizeOfInstructions ) |
| 1570 | { |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 1571 | FT_TRACE0(( "Too many instructions (%d) in composite glyph %ld\n", |
| 1572 | n_ins, subglyph->index )); |
David Turner | 662b344 | 2002-01-03 16:56:59 +0000 | [diff] [blame] | 1573 | error = TT_Err_Too_Many_Hints; |
| 1574 | goto Fail; |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1575 | } |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1576 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1577 | /* read the instructions */ |
David Turner | 7d3a264 | 2002-03-20 10:49:31 +0000 | [diff] [blame] | 1578 | if ( FT_STREAM_READ( exec->glyphIns, n_ins ) ) |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1579 | goto Fail; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1580 | |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 1581 | glyph->control_data = exec->glyphIns; |
| 1582 | glyph->control_len = n_ins; |
| 1583 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1584 | error = TT_Set_CodeRange( exec, |
| 1585 | tt_coderange_glyph, |
| 1586 | exec->glyphIns, |
| 1587 | n_ins ); |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1588 | if ( error ) |
| 1589 | goto Fail; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1590 | |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 1591 | error = FT_GlyphLoader_CheckPoints( gloader, num_points + 4, 0 ); |
Werner Lemberg | 6ab5624 | 2003-06-04 07:59:58 +0000 | [diff] [blame] | 1592 | if ( error ) |
| 1593 | goto Fail; |
| 1594 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1595 | /* prepare the execution context */ |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 1596 | tt_prepare_zone( &exec->pts, &gloader->base, |
| 1597 | start_point, start_contour ); |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1598 | pts = &exec->pts; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1599 | |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 1600 | pts->n_points = (short)( num_points + 4 ); |
David Turner | 43a2f65 | 2000-07-05 18:23:38 +0000 | [diff] [blame] | 1601 | pts->n_contours = gloader->base.outline.n_contours; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1602 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1603 | /* add phantom points */ |
| 1604 | pp1 = pts->cur + num_points; |
| 1605 | pp1[0] = loader->pp1; |
| 1606 | pp1[1] = loader->pp2; |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 1607 | pp1[2] = loader->pp3; |
| 1608 | pp1[3] = loader->pp4; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1609 | |
Werner Lemberg | deb4e98 | 2000-06-29 03:14:25 +0000 | [diff] [blame] | 1610 | pts->tags[num_points ] = 0; |
David Turner | 41dbcbf | 2000-03-09 11:46:25 +0000 | [diff] [blame] | 1611 | pts->tags[num_points + 1] = 0; |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 1612 | pts->tags[num_points + 2] = 0; |
| 1613 | pts->tags[num_points + 3] = 0; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1614 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1615 | /* if hinting, round the phantom points */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1616 | if ( IS_HINTED( loader->load_flags ) ) |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1617 | { |
David Turner | 87c0d30 | 2003-12-24 01:10:46 +0000 | [diff] [blame] | 1618 | pp1[0].x = FT_PIX_ROUND( loader->pp1.x ); |
| 1619 | pp1[1].x = FT_PIX_ROUND( loader->pp2.x ); |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 1620 | pp1[2].y = FT_PIX_ROUND( loader->pp3.y ); |
| 1621 | pp1[3].y = FT_PIX_ROUND( loader->pp4.y ); |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1622 | } |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1623 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1624 | { |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 1625 | FT_UInt k; |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1626 | |
| 1627 | |
David Turner | 43a2f65 | 2000-07-05 18:23:38 +0000 | [diff] [blame] | 1628 | for ( k = 0; k < num_points; k++ ) |
David Turner | b08fe2d | 2002-08-27 20:20:29 +0000 | [diff] [blame] | 1629 | pts->tags[k] &= FT_CURVE_TAG_ON; |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1630 | } |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1631 | |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 1632 | cur_to_org( num_points + 4, pts ); |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1633 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1634 | /* now consider hinting */ |
Werner Lemberg | dcd2e14 | 2000-06-25 07:43:15 +0000 | [diff] [blame] | 1635 | if ( IS_HINTED( loader->load_flags ) && n_ins > 0 ) |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1636 | { |
| 1637 | exec->is_composite = TRUE; |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 1638 | error = TT_Run_Context( exec, ((TT_Size)loader->size)->debug ); |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1639 | if ( error && exec->pedantic_hinting ) |
| 1640 | goto Fail; |
| 1641 | } |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1642 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1643 | /* save glyph origin and advance points */ |
| 1644 | loader->pp1 = pp1[0]; |
| 1645 | loader->pp2 = pp1[1]; |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 1646 | loader->pp3 = pp1[2]; |
| 1647 | loader->pp4 = pp1[3]; |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1648 | } |
Werner Lemberg | dcd2e14 | 2000-06-25 07:43:15 +0000 | [diff] [blame] | 1649 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1650 | #endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ |
Werner Lemberg | dcd2e14 | 2000-06-25 07:43:15 +0000 | [diff] [blame] | 1651 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1652 | } |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1653 | /* end of composite loading */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1654 | } |
David Turner | 77b68b8 | 2003-01-08 09:59:17 +0000 | [diff] [blame] | 1655 | else |
| 1656 | { |
| 1657 | /* invalid composite count ( negative but not -1 ) */ |
| 1658 | error = TT_Err_Invalid_Outline; |
| 1659 | goto Fail; |
| 1660 | } |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1661 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1662 | /***********************************************************************/ |
| 1663 | /***********************************************************************/ |
| 1664 | /***********************************************************************/ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1665 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1666 | Fail: |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 1667 | if ( opened_frame ) |
David Turner | 994d774 | 2000-06-25 04:49:19 +0000 | [diff] [blame] | 1668 | face->forget_glyph_frame( loader ); |
David Turner | 90f68b7 | 2000-06-23 12:26:14 +0000 | [diff] [blame] | 1669 | |
| 1670 | Exit: |
Graham Asher | ce12182 | 2002-08-01 15:29:17 +0000 | [diff] [blame] | 1671 | |
| 1672 | #ifdef FT_CONFIG_OPTION_INCREMENTAL |
Werner Lemberg | 3c403e4 | 2002-08-06 21:47:40 +0000 | [diff] [blame] | 1673 | if ( glyph_data_loaded ) |
| 1674 | face->root.internal->incremental_interface->funcs->free_glyph_data( |
| 1675 | face->root.internal->incremental_interface->object, |
| 1676 | &glyph_data ); |
Graham Asher | ce12182 | 2002-08-01 15:29:17 +0000 | [diff] [blame] | 1677 | #endif |
| 1678 | |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1679 | return error; |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1680 | } |
| 1681 | |
| 1682 | |
Graham Asher | 13217f2 | 2002-07-18 15:59:23 +0000 | [diff] [blame] | 1683 | static FT_Error |
David Turner | b5713c5 | 2002-03-14 11:26:29 +0000 | [diff] [blame] | 1684 | compute_glyph_metrics( TT_Loader loader, |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 1685 | FT_UInt glyph_index ) |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1686 | { |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 1687 | FT_BBox bbox; |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 1688 | TT_Face face = (TT_Face)loader->face; |
Werner Lemberg | cf24d51 | 2001-06-18 14:23:45 +0000 | [diff] [blame] | 1689 | FT_Fixed y_scale; |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1690 | TT_GlyphSlot glyph = loader->glyph; |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 1691 | TT_Size size = (TT_Size)loader->size; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1692 | |
Werner Lemberg | dcd2e14 | 2000-06-25 07:43:15 +0000 | [diff] [blame] | 1693 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1694 | y_scale = 0x10000L; |
| 1695 | if ( ( loader->load_flags & FT_LOAD_NO_SCALE ) == 0 ) |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1696 | y_scale = size->root.metrics.y_scale; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1697 | |
David Turner | b08fe2d | 2002-08-27 20:20:29 +0000 | [diff] [blame] | 1698 | if ( glyph->format != FT_GLYPH_FORMAT_COMPOSITE ) |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1699 | { |
David Turner | b08fe2d | 2002-08-27 20:20:29 +0000 | [diff] [blame] | 1700 | glyph->outline.flags &= ~FT_OUTLINE_SINGLE_PASS; |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1701 | |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1702 | /* copy outline to our glyph slot */ |
David Turner | eba5ad4 | 2002-03-14 12:56:35 +0000 | [diff] [blame] | 1703 | FT_GlyphLoader_CopyPoints( glyph->internal->loader, loader->gloader ); |
David Turner | 54e7574 | 2000-11-04 02:52:02 +0000 | [diff] [blame] | 1704 | glyph->outline = glyph->internal->loader->base.outline; |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 1705 | |
David Turner | ed7f62a | 2000-03-28 11:19:28 +0000 | [diff] [blame] | 1706 | /* translate array so that (0,0) is the glyph's origin */ |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1707 | FT_Outline_Translate( &glyph->outline, -loader->pp1.x, 0 ); |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1708 | |
David Turner | ed7f62a | 2000-03-28 11:19:28 +0000 | [diff] [blame] | 1709 | FT_Outline_Get_CBox( &glyph->outline, &bbox ); |
| 1710 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1711 | if ( IS_HINTED( loader->load_flags ) ) |
David Turner | ed7f62a | 2000-03-28 11:19:28 +0000 | [diff] [blame] | 1712 | { |
| 1713 | /* grid-fit the bounding box */ |
David Turner | 87c0d30 | 2003-12-24 01:10:46 +0000 | [diff] [blame] | 1714 | bbox.xMin = FT_PIX_FLOOR( bbox.xMin ); |
| 1715 | bbox.yMin = FT_PIX_FLOOR( bbox.yMin ); |
| 1716 | bbox.xMax = FT_PIX_CEIL( bbox.xMax ); |
| 1717 | bbox.yMax = FT_PIX_CEIL( bbox.yMax ); |
David Turner | ed7f62a | 2000-03-28 11:19:28 +0000 | [diff] [blame] | 1718 | } |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1719 | } |
David Turner | ed7f62a | 2000-03-28 11:19:28 +0000 | [diff] [blame] | 1720 | else |
| 1721 | bbox = loader->bbox; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1722 | |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 1723 | /* get the device-independent horizontal advance. It is scaled later */ |
| 1724 | /* by the base layer. */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1725 | { |
David Turner | 57d4de0 | 2001-06-08 13:29:36 +0000 | [diff] [blame] | 1726 | FT_Pos advance = loader->linear; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1727 | |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 1728 | |
Werner Lemberg | 5811c7c | 2000-07-02 13:53:16 +0000 | [diff] [blame] | 1729 | /* the flag FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH was introduced to */ |
| 1730 | /* correctly support DynaLab fonts, which have an incorrect */ |
| 1731 | /* `advance_Width_Max' field! It is used, to my knowledge, */ |
| 1732 | /* exclusively in the X-TrueType font server. */ |
| 1733 | /* */ |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 1734 | if ( face->postscript.isFixedPitch && |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1735 | ( loader->load_flags & FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH ) == 0 ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1736 | advance = face->horizontal.advance_Width_Max; |
| 1737 | |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1738 | /* we need to return the advance in font units in linearHoriAdvance, */ |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 1739 | /* it will be scaled later by the base layer. */ |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1740 | glyph->linearHoriAdvance = advance; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1741 | } |
| 1742 | |
| 1743 | glyph->metrics.horiBearingX = bbox.xMin; |
| 1744 | glyph->metrics.horiBearingY = bbox.yMax; |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1745 | glyph->metrics.horiAdvance = loader->pp2.x - loader->pp1.x; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1746 | |
David Turner | bce2986 | 2001-12-14 14:52:58 +0000 | [diff] [blame] | 1747 | /* don't forget to hint the advance when we need to */ |
| 1748 | if ( IS_HINTED( loader->load_flags ) ) |
David Turner | 87c0d30 | 2003-12-24 01:10:46 +0000 | [diff] [blame] | 1749 | glyph->metrics.horiAdvance = FT_PIX_ROUND( glyph->metrics.horiAdvance ); |
David Turner | bce2986 | 2001-12-14 14:52:58 +0000 | [diff] [blame] | 1750 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1751 | /* Now take care of vertical metrics. In the case where there is */ |
| 1752 | /* no vertical information within the font (relatively common), make */ |
| 1753 | /* up some metrics by `hand'... */ |
| 1754 | |
| 1755 | { |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 1756 | FT_Short top_bearing; /* vertical top side bearing (EM units) */ |
| 1757 | FT_UShort advance_height; /* vertical advance height (EM units) */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1758 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 1759 | FT_Pos left; /* scaled vertical left side bearing */ |
| 1760 | FT_Pos top; /* scaled vertical top side bearing */ |
| 1761 | FT_Pos advance; /* scaled vertical advance height */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1762 | |
Werner Lemberg | 56a4d87 | 2004-06-03 07:56:21 +0000 | [diff] [blame] | 1763 | |
Graham Asher | 13217f2 | 2002-07-18 15:59:23 +0000 | [diff] [blame] | 1764 | /* Get the unscaled top bearing and advance height. */ |
Graham Asher | 46960df | 2003-02-13 17:49:27 +0000 | [diff] [blame] | 1765 | if ( face->vertical_info && |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1766 | face->vertical.number_Of_VMetrics > 0 ) |
| 1767 | { |
Werner Lemberg | 49f4d34 | 2005-06-16 19:07:08 +0000 | [diff] [blame^] | 1768 | top_bearing = (FT_Short)FT_DivFix( loader->pp3.y - bbox.yMax, |
| 1769 | y_scale ); |
| 1770 | |
| 1771 | if ( loader->pp3.y <= loader->pp4.y ) |
| 1772 | advance_height = 0; |
| 1773 | else |
| 1774 | advance_height = (FT_UShort)FT_DivFix( loader->pp3.y - loader->pp4.y, |
| 1775 | y_scale ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1776 | } |
| 1777 | else |
| 1778 | { |
Werner Lemberg | 49f4d34 | 2005-06-16 19:07:08 +0000 | [diff] [blame^] | 1779 | FT_Short max_height, height; |
| 1780 | |
| 1781 | |
| 1782 | /* XXX Compute top side bearing and advance height in */ |
| 1783 | /* Get_VMetrics instead of here. */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1784 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1785 | /* NOTE: The OS/2 values are the only `portable' ones, */ |
| 1786 | /* which is why we use them, if there is an OS/2 */ |
| 1787 | /* table in the font. Otherwise, we use the */ |
| 1788 | /* values defined in the horizontal header. */ |
Werner Lemberg | 49f4d34 | 2005-06-16 19:07:08 +0000 | [diff] [blame^] | 1789 | |
| 1790 | height = FT_DivFix( bbox.yMax - bbox.yMin, y_scale ); |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 1791 | if ( face->os2.version != 0xFFFFU ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1792 | { |
Werner Lemberg | 49f4d34 | 2005-06-16 19:07:08 +0000 | [diff] [blame^] | 1793 | /* sTypoDescender is negative */ |
| 1794 | max_height = face->os2.sTypoAscender - face->os2.sTypoDescender; |
| 1795 | |
| 1796 | top_bearing = (FT_Short)( ( max_height - height ) / 2 ); |
| 1797 | advance_height = (FT_UShort)( max_height + face->os2.sTypoLineGap ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1798 | } |
| 1799 | else |
| 1800 | { |
Werner Lemberg | 49f4d34 | 2005-06-16 19:07:08 +0000 | [diff] [blame^] | 1801 | max_height = face->horizontal.Ascender + face->horizontal.Descender; |
| 1802 | |
| 1803 | top_bearing = (FT_Short)( ( max_height - height ) / 2 ); |
| 1804 | advance_height = (FT_UShort)( max_height + |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1805 | face->horizontal.Line_Gap ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1806 | } |
| 1807 | } |
| 1808 | |
Graham Asher | 46960df | 2003-02-13 17:49:27 +0000 | [diff] [blame] | 1809 | #ifdef FT_CONFIG_OPTION_INCREMENTAL |
| 1810 | |
| 1811 | /* If this is an incrementally loaded font see if there are */ |
| 1812 | /* overriding metrics for this glyph. */ |
| 1813 | if ( face->root.internal->incremental_interface && |
| 1814 | face->root.internal->incremental_interface->funcs->get_glyph_metrics ) |
| 1815 | { |
| 1816 | FT_Incremental_MetricsRec metrics; |
Werner Lemberg | 3ab770b | 2005-03-08 20:24:56 +0000 | [diff] [blame] | 1817 | FT_Error error = TT_Err_Ok; |
Graham Asher | 46960df | 2003-02-13 17:49:27 +0000 | [diff] [blame] | 1818 | |
Werner Lemberg | b442ca1 | 2003-04-23 15:50:27 +0000 | [diff] [blame] | 1819 | |
| 1820 | metrics.bearing_x = 0; |
| 1821 | metrics.bearing_y = top_bearing; |
Werner Lemberg | 49f4d34 | 2005-06-16 19:07:08 +0000 | [diff] [blame^] | 1822 | metrics.advance = advance_height; |
Graham Asher | 46960df | 2003-02-13 17:49:27 +0000 | [diff] [blame] | 1823 | error = |
| 1824 | face->root.internal->incremental_interface->funcs->get_glyph_metrics( |
| 1825 | face->root.internal->incremental_interface->object, |
| 1826 | glyph_index, TRUE, &metrics ); |
| 1827 | |
| 1828 | if ( error ) |
| 1829 | return error; |
| 1830 | |
| 1831 | top_bearing = (FT_Short)metrics.bearing_y; |
| 1832 | advance_height = (FT_UShort)metrics.advance; |
| 1833 | } |
| 1834 | |
Werner Lemberg | 8bb07e6 | 2004-03-27 08:43:17 +0000 | [diff] [blame] | 1835 | /* GWW: Do vertical metrics get loaded incrementally too? */ |
| 1836 | |
Graham Asher | 46960df | 2003-02-13 17:49:27 +0000 | [diff] [blame] | 1837 | #endif /* FT_CONFIG_OPTION_INCREMENTAL */ |
| 1838 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1839 | /* scale the metrics */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1840 | if ( !( loader->load_flags & FT_LOAD_NO_SCALE ) ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1841 | { |
Werner Lemberg | 49f4d34 | 2005-06-16 19:07:08 +0000 | [diff] [blame^] | 1842 | top = FT_MulFix( top_bearing, y_scale ); |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1843 | advance = FT_MulFix( advance_height, y_scale ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1844 | } |
| 1845 | else |
| 1846 | { |
Werner Lemberg | 49f4d34 | 2005-06-16 19:07:08 +0000 | [diff] [blame^] | 1847 | top = top_bearing; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1848 | advance = advance_height; |
| 1849 | } |
| 1850 | |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 1851 | /* set the advance height in design units. It is scaled later by */ |
| 1852 | /* the base layer. */ |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1853 | glyph->linearVertAdvance = advance_height; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1854 | |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 1855 | /* XXX: for now, we have no better algorithm for the lsb, but it */ |
| 1856 | /* should work fine. */ |
| 1857 | /* */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1858 | left = ( bbox.xMin - bbox.xMax ) / 2; |
| 1859 | |
| 1860 | /* grid-fit them if necessary */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1861 | if ( IS_HINTED( loader->load_flags ) ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1862 | { |
David Turner | 87c0d30 | 2003-12-24 01:10:46 +0000 | [diff] [blame] | 1863 | left = FT_PIX_FLOOR( left ); |
Werner Lemberg | 49f4d34 | 2005-06-16 19:07:08 +0000 | [diff] [blame^] | 1864 | /* top should be floor'ed */ |
| 1865 | top = FT_PIX_FLOOR( top ); |
David Turner | 87c0d30 | 2003-12-24 01:10:46 +0000 | [diff] [blame] | 1866 | advance = FT_PIX_ROUND( advance ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1867 | } |
| 1868 | |
| 1869 | glyph->metrics.vertBearingX = left; |
| 1870 | glyph->metrics.vertBearingY = top; |
| 1871 | glyph->metrics.vertAdvance = advance; |
| 1872 | } |
| 1873 | |
Werner Lemberg | dcd2e14 | 2000-06-25 07:43:15 +0000 | [diff] [blame] | 1874 | /* adjust advance width to the value contained in the hdmx table */ |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1875 | if ( !face->postscript.isFixedPitch && size && |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1876 | IS_HINTED( loader->load_flags ) ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1877 | { |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 1878 | FT_Byte* widthp = Get_Advance_WidthPtr( face, |
| 1879 | size->root.metrics.x_ppem, |
| 1880 | glyph_index ); |
Werner Lemberg | dcd2e14 | 2000-06-25 07:43:15 +0000 | [diff] [blame] | 1881 | |
| 1882 | |
David Turner | e568027 | 2005-02-26 00:12:04 +0000 | [diff] [blame] | 1883 | if ( widthp ) |
| 1884 | glyph->metrics.horiAdvance = *widthp << 6; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1885 | } |
| 1886 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1887 | /* set glyph dimensions */ |
| 1888 | glyph->metrics.width = bbox.xMax - bbox.xMin; |
| 1889 | glyph->metrics.height = bbox.yMax - bbox.yMin; |
Graham Asher | 13217f2 | 2002-07-18 15:59:23 +0000 | [diff] [blame] | 1890 | |
| 1891 | return 0; |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1892 | } |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1893 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1894 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1895 | /*************************************************************************/ |
| 1896 | /* */ |
| 1897 | /* <Function> */ |
| 1898 | /* TT_Load_Glyph */ |
| 1899 | /* */ |
| 1900 | /* <Description> */ |
| 1901 | /* A function used to load a single glyph within a given glyph slot, */ |
| 1902 | /* for a given size. */ |
| 1903 | /* */ |
| 1904 | /* <Input> */ |
| 1905 | /* glyph :: A handle to a target slot object where the glyph */ |
| 1906 | /* will be loaded. */ |
| 1907 | /* */ |
| 1908 | /* size :: A handle to the source face size at which the glyph */ |
| 1909 | /* must be scaled/loaded. */ |
| 1910 | /* */ |
| 1911 | /* glyph_index :: The index of the glyph in the font file. */ |
| 1912 | /* */ |
| 1913 | /* load_flags :: A flag indicating what to load for this glyph. The */ |
| 1914 | /* FT_LOAD_XXX constants can be used to control the */ |
| 1915 | /* glyph loading process (e.g., whether the outline */ |
| 1916 | /* should be scaled, whether to load bitmaps or not, */ |
| 1917 | /* whether to hint the outline, etc). */ |
| 1918 | /* */ |
| 1919 | /* <Return> */ |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 1920 | /* FreeType error code. 0 means success. */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1921 | /* */ |
David Turner | bc82f1b | 2002-03-01 02:26:22 +0000 | [diff] [blame] | 1922 | FT_LOCAL_DEF( FT_Error ) |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 1923 | TT_Load_Glyph( TT_Size size, |
| 1924 | TT_GlyphSlot glyph, |
Werner Lemberg | c3dc56b | 2004-04-19 06:13:50 +0000 | [diff] [blame] | 1925 | FT_UInt glyph_index, |
Werner Lemberg | e59dc91 | 2002-09-21 18:43:10 +0000 | [diff] [blame] | 1926 | FT_Int32 load_flags ) |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1927 | { |
David Turner | 4e7eeee | 2002-02-28 16:10:29 +0000 | [diff] [blame] | 1928 | SFNT_Service sfnt; |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 1929 | TT_Face face; |
| 1930 | FT_Stream stream; |
| 1931 | FT_Error error; |
| 1932 | TT_LoaderRec loader; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1933 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1934 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1935 | face = (TT_Face)glyph->face; |
David Turner | 4e7eeee | 2002-02-28 16:10:29 +0000 | [diff] [blame] | 1936 | sfnt = (SFNT_Service)face->sfnt; |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1937 | stream = face->root.stream; |
Werner Lemberg | 3ab770b | 2005-03-08 20:24:56 +0000 | [diff] [blame] | 1938 | error = TT_Err_Ok; |
David Turner | ed7f62a | 2000-03-28 11:19:28 +0000 | [diff] [blame] | 1939 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1940 | if ( !size || ( load_flags & FT_LOAD_NO_SCALE ) || |
| 1941 | ( load_flags & FT_LOAD_NO_RECURSE ) ) |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1942 | { |
| 1943 | size = NULL; |
| 1944 | load_flags |= FT_LOAD_NO_SCALE | |
| 1945 | FT_LOAD_NO_HINTING | |
| 1946 | FT_LOAD_NO_BITMAP; |
| 1947 | } |
| 1948 | |
David Turner | ed7f62a | 2000-03-28 11:19:28 +0000 | [diff] [blame] | 1949 | glyph->num_subglyphs = 0; |
| 1950 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1951 | #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS |
Werner Lemberg | 4b68007 | 2000-11-07 06:30:29 +0000 | [diff] [blame] | 1952 | |
| 1953 | /* try to load embedded bitmap if any */ |
| 1954 | /* */ |
| 1955 | /* XXX: The convention should be emphasized in */ |
| 1956 | /* the documents because it can be confusing. */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1957 | if ( size && |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 1958 | size->strike_index != 0xFFFFU && |
David Turner | f96594f | 2000-11-06 23:07:51 +0000 | [diff] [blame] | 1959 | sfnt->load_sbits && |
| 1960 | ( load_flags & FT_LOAD_NO_BITMAP ) == 0 ) |
| 1961 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1962 | { |
David Turner | b5713c5 | 2002-03-14 11:26:29 +0000 | [diff] [blame] | 1963 | TT_SBit_MetricsRec metrics; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 1964 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 1965 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1966 | error = sfnt->load_sbit_image( face, |
Werner Lemberg | 7386197 | 2003-06-05 04:31:05 +0000 | [diff] [blame] | 1967 | (FT_ULong)size->strike_index, |
Werner Lemberg | c3dc56b | 2004-04-19 06:13:50 +0000 | [diff] [blame] | 1968 | glyph_index, |
Werner Lemberg | 7386197 | 2003-06-05 04:31:05 +0000 | [diff] [blame] | 1969 | (FT_Int)load_flags, |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1970 | stream, |
| 1971 | &glyph->bitmap, |
| 1972 | &metrics ); |
| 1973 | if ( !error ) |
| 1974 | { |
| 1975 | glyph->outline.n_points = 0; |
| 1976 | glyph->outline.n_contours = 0; |
| 1977 | |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 1978 | glyph->metrics.width = (FT_Pos)metrics.width << 6; |
| 1979 | glyph->metrics.height = (FT_Pos)metrics.height << 6; |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1980 | |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 1981 | glyph->metrics.horiBearingX = (FT_Pos)metrics.horiBearingX << 6; |
| 1982 | glyph->metrics.horiBearingY = (FT_Pos)metrics.horiBearingY << 6; |
| 1983 | glyph->metrics.horiAdvance = (FT_Pos)metrics.horiAdvance << 6; |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1984 | |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 1985 | glyph->metrics.vertBearingX = (FT_Pos)metrics.vertBearingX << 6; |
| 1986 | glyph->metrics.vertBearingY = (FT_Pos)metrics.vertBearingY << 6; |
| 1987 | glyph->metrics.vertAdvance = (FT_Pos)metrics.vertAdvance << 6; |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 1988 | |
David Turner | b08fe2d | 2002-08-27 20:20:29 +0000 | [diff] [blame] | 1989 | glyph->format = FT_GLYPH_FORMAT_BITMAP; |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1990 | if ( load_flags & FT_LOAD_VERTICAL_LAYOUT ) |
| 1991 | { |
David Turner | e161ee4 | 2000-07-10 22:03:10 +0000 | [diff] [blame] | 1992 | glyph->bitmap_left = metrics.vertBearingX; |
| 1993 | glyph->bitmap_top = metrics.vertBearingY; |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1994 | } |
| 1995 | else |
| 1996 | { |
David Turner | e161ee4 | 2000-07-10 22:03:10 +0000 | [diff] [blame] | 1997 | glyph->bitmap_left = metrics.horiBearingX; |
| 1998 | glyph->bitmap_top = metrics.horiBearingY; |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 1999 | } |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 2000 | return error; |
| 2001 | } |
| 2002 | } |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 2003 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 2004 | #endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */ |
| 2005 | |
Werner Lemberg | 0d53511 | 2001-12-19 22:26:12 +0000 | [diff] [blame] | 2006 | /* return immediately if we only want the embedded bitmaps */ |
David Turner | 4937a3e | 2001-12-19 21:09:16 +0000 | [diff] [blame] | 2007 | if ( load_flags & FT_LOAD_SBITS_ONLY ) |
Werner Lemberg | 779afe4 | 2003-06-22 15:33:53 +0000 | [diff] [blame] | 2008 | return TT_Err_Invalid_Argument; |
David Turner | 4937a3e | 2001-12-19 21:09:16 +0000 | [diff] [blame] | 2009 | |
Werner Lemberg | 5811c7c | 2000-07-02 13:53:16 +0000 | [diff] [blame] | 2010 | /* seek to the beginning of the glyph table. For Type 42 fonts */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 2011 | /* the table might be accessed from a Postscript stream or something */ |
| 2012 | /* else... */ |
Werner Lemberg | 7f74a52 | 2002-07-26 09:09:10 +0000 | [diff] [blame] | 2013 | |
Graham Asher | 13217f2 | 2002-07-18 15:59:23 +0000 | [diff] [blame] | 2014 | #ifdef FT_CONFIG_OPTION_INCREMENTAL |
Werner Lemberg | 7f74a52 | 2002-07-26 09:09:10 +0000 | [diff] [blame] | 2015 | |
| 2016 | /* Don't look for the glyph table if this is an incremental font. */ |
Graham Asher | ce12182 | 2002-08-01 15:29:17 +0000 | [diff] [blame] | 2017 | if ( !face->root.internal->incremental_interface ) |
Werner Lemberg | 7f74a52 | 2002-07-26 09:09:10 +0000 | [diff] [blame] | 2018 | |
Graham Asher | 13217f2 | 2002-07-18 15:59:23 +0000 | [diff] [blame] | 2019 | #endif |
Werner Lemberg | 7f74a52 | 2002-07-26 09:09:10 +0000 | [diff] [blame] | 2020 | |
| 2021 | { |
Graham Asher | 13217f2 | 2002-07-18 15:59:23 +0000 | [diff] [blame] | 2022 | error = face->goto_table( face, TTAG_glyf, stream, 0 ); |
| 2023 | if ( error ) |
| 2024 | { |
| 2025 | FT_ERROR(( "TT_Load_Glyph: could not access glyph table\n" )); |
| 2026 | goto Exit; |
| 2027 | } |
Werner Lemberg | 7f74a52 | 2002-07-26 09:09:10 +0000 | [diff] [blame] | 2028 | } |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 2029 | |
Werner Lemberg | b3d5e9c | 2002-07-28 05:05:24 +0000 | [diff] [blame] | 2030 | FT_MEM_ZERO( &loader, sizeof ( loader ) ); |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 2031 | |
David Turner | 08fdac9 | 2000-02-21 16:01:33 +0000 | [diff] [blame] | 2032 | /* update the glyph zone bounds */ |
David Turner | 08fdac9 | 2000-02-21 16:01:33 +0000 | [diff] [blame] | 2033 | { |
Werner Lemberg | 3ab770b | 2005-03-08 20:24:56 +0000 | [diff] [blame] | 2034 | FT_GlyphLoader gloader = FT_FACE_DRIVER( face )->glyph_loader; |
Werner Lemberg | a929ba9 | 2000-06-25 06:47:11 +0000 | [diff] [blame] | 2035 | |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 2036 | |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 2037 | loader.gloader = gloader; |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 2038 | |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 2039 | FT_GlyphLoader_Rewind( gloader ); |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 2040 | |
David Turner | f0df85b | 2000-06-22 00:17:42 +0000 | [diff] [blame] | 2041 | tt_prepare_zone( &loader.zone, &gloader->base, 0, 0 ); |
| 2042 | tt_prepare_zone( &loader.base, &gloader->base, 0, 0 ); |
David Turner | 08fdac9 | 2000-02-21 16:01:33 +0000 | [diff] [blame] | 2043 | } |
David Turner | 08fdac9 | 2000-02-21 16:01:33 +0000 | [diff] [blame] | 2044 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 2045 | #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 2046 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 2047 | if ( size ) |
| 2048 | { |
| 2049 | /* query new execution context */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 2050 | loader.exec = size->debug ? size->context : TT_New_Context( face ); |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 2051 | if ( !loader.exec ) |
| 2052 | return TT_Err_Could_Not_Find_Context; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 2053 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 2054 | TT_Load_Context( loader.exec, face, size ); |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 2055 | loader.instructions = loader.exec->glyphIns; |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 2056 | |
| 2057 | /* load default graphics state - if needed */ |
| 2058 | if ( size->GS.instruct_control & 2 ) |
| 2059 | loader.exec->GS = tt_default_graphics_state; |
Werner Lemberg | dea712b | 2004-08-07 15:08:33 +0000 | [diff] [blame] | 2060 | |
| 2061 | loader.exec->pedantic_hinting = |
| 2062 | FT_BOOL( load_flags & FT_LOAD_PEDANTIC ); |
| 2063 | |
| 2064 | loader.exec->grayscale = |
| 2065 | FT_BOOL( FT_LOAD_TARGET_MODE( load_flags ) != FT_LOAD_TARGET_MONO ); |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 2066 | } |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 2067 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 2068 | #endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ |
| 2069 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 2070 | /* clear all outline flags, except the `owner' one */ |
David Turner | 81bb4ad | 2000-06-28 04:19:49 +0000 | [diff] [blame] | 2071 | glyph->outline.flags = 0; |
David Turner | e49ab25 | 2000-05-16 23:44:38 +0000 | [diff] [blame] | 2072 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 2073 | /* let's initialize the rest of our loader now */ |
| 2074 | |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 2075 | loader.load_flags = load_flags; |
| 2076 | |
David Turner | c312861 | 2000-06-23 05:02:13 +0000 | [diff] [blame] | 2077 | loader.face = (FT_Face)face; |
| 2078 | loader.size = (FT_Size)size; |
| 2079 | loader.glyph = (FT_GlyphSlot)glyph; |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 2080 | loader.stream = stream; |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 2081 | |
Graham Asher | 13217f2 | 2002-07-18 15:59:23 +0000 | [diff] [blame] | 2082 | #ifdef FT_CONFIG_OPTION_INCREMENTAL |
Werner Lemberg | 7f74a52 | 2002-07-26 09:09:10 +0000 | [diff] [blame] | 2083 | |
Graham Asher | ce12182 | 2002-08-01 15:29:17 +0000 | [diff] [blame] | 2084 | if ( face->root.internal->incremental_interface ) |
Graham Asher | 13217f2 | 2002-07-18 15:59:23 +0000 | [diff] [blame] | 2085 | loader.glyf_offset = 0; |
Werner Lemberg | 7f74a52 | 2002-07-26 09:09:10 +0000 | [diff] [blame] | 2086 | else |
| 2087 | |
Graham Asher | 13217f2 | 2002-07-18 15:59:23 +0000 | [diff] [blame] | 2088 | #endif |
Werner Lemberg | 7f74a52 | 2002-07-26 09:09:10 +0000 | [diff] [blame] | 2089 | |
| 2090 | loader.glyf_offset = FT_STREAM_POS(); |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 2091 | |
| 2092 | #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 2093 | |
| 2094 | /* if the cvt program has disabled hinting, the argument */ |
| 2095 | /* is ignored. */ |
| 2096 | if ( size && ( size->GS.instruct_control & 1 ) ) |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 2097 | loader.load_flags |= FT_LOAD_NO_HINTING; |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 2098 | |
| 2099 | #endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 2100 | |
| 2101 | /* Main loading loop */ |
David Turner | b08fe2d | 2002-08-27 20:20:29 +0000 | [diff] [blame] | 2102 | glyph->format = FT_GLYPH_FORMAT_OUTLINE; |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 2103 | glyph->num_subglyphs = 0; |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 2104 | |
David Turner | 77b68b8 | 2003-01-08 09:59:17 +0000 | [diff] [blame] | 2105 | error = load_truetype_glyph( &loader, glyph_index, 0 ); |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 2106 | if ( !error ) |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 2107 | compute_glyph_metrics( &loader, glyph_index ); |
| 2108 | |
| 2109 | #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
Werner Lemberg | dcd2e14 | 2000-06-25 07:43:15 +0000 | [diff] [blame] | 2110 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 2111 | if ( !size || !size->debug ) |
David Turner | 8f43c71 | 2000-02-02 12:16:19 +0000 | [diff] [blame] | 2112 | TT_Done_Context( loader.exec ); |
Werner Lemberg | dcd2e14 | 2000-06-25 07:43:15 +0000 | [diff] [blame] | 2113 | |
| 2114 | #endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 2115 | |
Werner Lemberg | 26aca02 | 2002-05-05 07:40:16 +0000 | [diff] [blame] | 2116 | /* Set the `high precision' bit flag. */ |
| 2117 | /* This is _critical_ to get correct output for monochrome */ |
| 2118 | /* TrueType glyphs at all sizes using the bytecode interpreter. */ |
| 2119 | /* */ |
David Turner | 8cd8907 | 2002-05-04 18:02:59 +0000 | [diff] [blame] | 2120 | if ( size && size->root.metrics.y_ppem < 24 ) |
David Turner | b08fe2d | 2002-08-27 20:20:29 +0000 | [diff] [blame] | 2121 | glyph->outline.flags |= FT_OUTLINE_HIGH_PRECISION; |
David Turner | 8cd8907 | 2002-05-04 18:02:59 +0000 | [diff] [blame] | 2122 | |
David Turner | 08fdac9 | 2000-02-21 16:01:33 +0000 | [diff] [blame] | 2123 | Exit: |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 2124 | return error; |
| 2125 | } |
| 2126 | |
| 2127 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 2128 | /* END */ |