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| 1 /***************************************************************************/ | |
| 2 /* */ | |
| 3 /* ftglyph.h */ | |
| 4 /* */ | |
| 5 /* FreeType convenience functions to handle glyphs (specification). */ | |
| 6 /* */ | |
| 7 /* Copyright 1996-2003, 2006, 2008, 2009, 2011, 2013, 2014 by */ | |
| 8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */ | |
| 9 /* */ | |
| 10 /* This file is part of the FreeType project, and may only be used, */ | |
| 11 /* modified, and distributed under the terms of the FreeType project */ | |
| 12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ | |
| 13 /* this file you indicate that you have read the license and */ | |
| 14 /* understand and accept it fully. */ | |
| 15 /* */ | |
| 16 /***************************************************************************/ | |
| 17 | |
| 18 | |
| 19 /*************************************************************************/ | |
| 20 /* */ | |
| 21 /* This file contains the definition of several convenience functions */ | |
| 22 /* that can be used by client applications to easily retrieve glyph */ | |
| 23 /* bitmaps and outlines from a given face. */ | |
| 24 /* */ | |
| 25 /* These functions should be optional if you are writing a font server */ | |
| 26 /* or text layout engine on top of FreeType. However, they are pretty */ | |
| 27 /* handy for many other simple uses of the library. */ | |
| 28 /* */ | |
| 29 /*************************************************************************/ | |
| 30 | |
| 31 | |
| 32 #ifndef __FTGLYPH_H__ | |
| 33 #define __FTGLYPH_H__ | |
| 34 | |
| 35 | |
| 36 #include <ft2build.h> | |
| 37 #include FT_FREETYPE_H | |
| 38 | |
| 39 #ifdef FREETYPE_H | |
| 40 #error "freetype.h of FreeType 1 has been loaded!" | |
| 41 #error "Please fix the directory search order for header files" | |
| 42 #error "so that freetype.h of FreeType 2 is found first." | |
| 43 #endif | |
| 44 | |
| 45 | |
| 46 FT_BEGIN_HEADER | |
| 47 | |
| 48 | |
| 49 /*************************************************************************/ | |
| 50 /* */ | |
| 51 /* <Section> */ | |
| 52 /* glyph_management */ | |
| 53 /* */ | |
| 54 /* <Title> */ | |
| 55 /* Glyph Management */ | |
| 56 /* */ | |
| 57 /* <Abstract> */ | |
| 58 /* Generic interface to manage individual glyph data. */ | |
| 59 /* */ | |
| 60 /* <Description> */ | |
| 61 /* This section contains definitions used to manage glyph data */ | |
| 62 /* through generic FT_Glyph objects. Each of them can contain a */ | |
| 63 /* bitmap, a vector outline, or even images in other formats. */ | |
| 64 /* */ | |
| 65 /*************************************************************************/ | |
| 66 | |
| 67 | |
| 68 /* forward declaration to a private type */ | |
| 69 typedef struct FT_Glyph_Class_ FT_Glyph_Class; | |
| 70 | |
| 71 | |
| 72 /*************************************************************************/ | |
| 73 /* */ | |
| 74 /* <Type> */ | |
| 75 /* FT_Glyph */ | |
| 76 /* */ | |
| 77 /* <Description> */ | |
| 78 /* Handle to an object used to model generic glyph images. It is a */ | |
| 79 /* pointer to the @FT_GlyphRec structure and can contain a glyph */ | |
| 80 /* bitmap or pointer. */ | |
| 81 /* */ | |
| 82 /* <Note> */ | |
| 83 /* Glyph objects are not owned by the library. You must thus release */ | |
| 84 /* them manually (through @FT_Done_Glyph) _before_ calling */ | |
| 85 /* @FT_Done_FreeType. */ | |
| 86 /* */ | |
| 87 typedef struct FT_GlyphRec_* FT_Glyph; | |
| 88 | |
| 89 | |
| 90 /*************************************************************************/ | |
| 91 /* */ | |
| 92 /* <Struct> */ | |
| 93 /* FT_GlyphRec */ | |
| 94 /* */ | |
| 95 /* <Description> */ | |
| 96 /* The root glyph structure contains a given glyph image plus its */ | |
| 97 /* advance width in 16.16 fixed-point format. */ | |
| 98 /* */ | |
| 99 /* <Fields> */ | |
| 100 /* library :: A handle to the FreeType library object. */ | |
| 101 /* */ | |
| 102 /* clazz :: A pointer to the glyph's class. Private. */ | |
| 103 /* */ | |
| 104 /* format :: The format of the glyph's image. */ | |
| 105 /* */ | |
| 106 /* advance :: A 16.16 vector that gives the glyph's advance width. */ | |
| 107 /* */ | |
| 108 typedef struct FT_GlyphRec_ | |
| 109 { | |
| 110 FT_Library library; | |
| 111 const FT_Glyph_Class* clazz; | |
| 112 FT_Glyph_Format format; | |
| 113 FT_Vector advance; | |
| 114 | |
| 115 } FT_GlyphRec; | |
| 116 | |
| 117 | |
| 118 /*************************************************************************/ | |
| 119 /* */ | |
| 120 /* <Type> */ | |
| 121 /* FT_BitmapGlyph */ | |
| 122 /* */ | |
| 123 /* <Description> */ | |
| 124 /* A handle to an object used to model a bitmap glyph image. This is */ | |
| 125 /* a sub-class of @FT_Glyph, and a pointer to @FT_BitmapGlyphRec. */ | |
| 126 /* */ | |
| 127 typedef struct FT_BitmapGlyphRec_* FT_BitmapGlyph; | |
| 128 | |
| 129 | |
| 130 /*************************************************************************/ | |
| 131 /* */ | |
| 132 /* <Struct> */ | |
| 133 /* FT_BitmapGlyphRec */ | |
| 134 /* */ | |
| 135 /* <Description> */ | |
| 136 /* A structure used for bitmap glyph images. This really is a */ | |
| 137 /* `sub-class' of @FT_GlyphRec. */ | |
| 138 /* */ | |
| 139 /* <Fields> */ | |
| 140 /* root :: The root @FT_Glyph fields. */ | |
| 141 /* */ | |
| 142 /* left :: The left-side bearing, i.e., the horizontal distance */ | |
| 143 /* from the current pen position to the left border of the */ | |
| 144 /* glyph bitmap. */ | |
| 145 /* */ | |
| 146 /* top :: The top-side bearing, i.e., the vertical distance from */ | |
| 147 /* the current pen position to the top border of the glyph */ | |
| 148 /* bitmap. This distance is positive for upwards~y! */ | |
| 149 /* */ | |
| 150 /* bitmap :: A descriptor for the bitmap. */ | |
| 151 /* */ | |
| 152 /* <Note> */ | |
| 153 /* You can typecast an @FT_Glyph to @FT_BitmapGlyph if you have */ | |
| 154 /* `glyph->format == FT_GLYPH_FORMAT_BITMAP'. This lets you access */ | |
| 155 /* the bitmap's contents easily. */ | |
| 156 /* */ | |
| 157 /* The corresponding pixel buffer is always owned by @FT_BitmapGlyph */ | |
| 158 /* and is thus created and destroyed with it. */ | |
| 159 /* */ | |
| 160 typedef struct FT_BitmapGlyphRec_ | |
| 161 { | |
| 162 FT_GlyphRec root; | |
| 163 FT_Int left; | |
| 164 FT_Int top; | |
| 165 FT_Bitmap bitmap; | |
| 166 | |
| 167 } FT_BitmapGlyphRec; | |
| 168 | |
| 169 | |
| 170 /*************************************************************************/ | |
| 171 /* */ | |
| 172 /* <Type> */ | |
| 173 /* FT_OutlineGlyph */ | |
| 174 /* */ | |
| 175 /* <Description> */ | |
| 176 /* A handle to an object used to model an outline glyph image. This */ | |
| 177 /* is a sub-class of @FT_Glyph, and a pointer to @FT_OutlineGlyphRec. */ | |
| 178 /* */ | |
| 179 typedef struct FT_OutlineGlyphRec_* FT_OutlineGlyph; | |
| 180 | |
| 181 | |
| 182 /*************************************************************************/ | |
| 183 /* */ | |
| 184 /* <Struct> */ | |
| 185 /* FT_OutlineGlyphRec */ | |
| 186 /* */ | |
| 187 /* <Description> */ | |
| 188 /* A structure used for outline (vectorial) glyph images. This */ | |
| 189 /* really is a `sub-class' of @FT_GlyphRec. */ | |
| 190 /* */ | |
| 191 /* <Fields> */ | |
| 192 /* root :: The root @FT_Glyph fields. */ | |
| 193 /* */ | |
| 194 /* outline :: A descriptor for the outline. */ | |
| 195 /* */ | |
| 196 /* <Note> */ | |
| 197 /* You can typecast an @FT_Glyph to @FT_OutlineGlyph if you have */ | |
| 198 /* `glyph->format == FT_GLYPH_FORMAT_OUTLINE'. This lets you access */ | |
| 199 /* the outline's content easily. */ | |
| 200 /* */ | |
| 201 /* As the outline is extracted from a glyph slot, its coordinates are */ | |
| 202 /* expressed normally in 26.6 pixels, unless the flag */ | |
| 203 /* @FT_LOAD_NO_SCALE was used in @FT_Load_Glyph() or @FT_Load_Char(). */ | |
| 204 /* */ | |
| 205 /* The outline's tables are always owned by the object and are */ | |
| 206 /* destroyed with it. */ | |
| 207 /* */ | |
| 208 typedef struct FT_OutlineGlyphRec_ | |
| 209 { | |
| 210 FT_GlyphRec root; | |
| 211 FT_Outline outline; | |
| 212 | |
| 213 } FT_OutlineGlyphRec; | |
| 214 | |
| 215 | |
| 216 /*************************************************************************/ | |
| 217 /* */ | |
| 218 /* <Function> */ | |
| 219 /* FT_Get_Glyph */ | |
| 220 /* */ | |
| 221 /* <Description> */ | |
| 222 /* A function used to extract a glyph image from a slot. Note that */ | |
| 223 /* the created @FT_Glyph object must be released with @FT_Done_Glyph. */ | |
| 224 /* */ | |
| 225 /* <Input> */ | |
| 226 /* slot :: A handle to the source glyph slot. */ | |
| 227 /* */ | |
| 228 /* <Output> */ | |
| 229 /* aglyph :: A handle to the glyph object. */ | |
| 230 /* */ | |
| 231 /* <Return> */ | |
| 232 /* FreeType error code. 0~means success. */ | |
| 233 /* */ | |
| 234 FT_EXPORT( FT_Error ) | |
| 235 FT_Get_Glyph( FT_GlyphSlot slot, | |
| 236 FT_Glyph *aglyph ); | |
| 237 | |
| 238 | |
| 239 /*************************************************************************/ | |
| 240 /* */ | |
| 241 /* <Function> */ | |
| 242 /* FT_Glyph_Copy */ | |
| 243 /* */ | |
| 244 /* <Description> */ | |
| 245 /* A function used to copy a glyph image. Note that the created */ | |
| 246 /* @FT_Glyph object must be released with @FT_Done_Glyph. */ | |
| 247 /* */ | |
| 248 /* <Input> */ | |
| 249 /* source :: A handle to the source glyph object. */ | |
| 250 /* */ | |
| 251 /* <Output> */ | |
| 252 /* target :: A handle to the target glyph object. 0~in case of */ | |
| 253 /* error. */ | |
| 254 /* */ | |
| 255 /* <Return> */ | |
| 256 /* FreeType error code. 0~means success. */ | |
| 257 /* */ | |
| 258 FT_EXPORT( FT_Error ) | |
| 259 FT_Glyph_Copy( FT_Glyph source, | |
| 260 FT_Glyph *target ); | |
| 261 | |
| 262 | |
| 263 /*************************************************************************/ | |
| 264 /* */ | |
| 265 /* <Function> */ | |
| 266 /* FT_Glyph_Transform */ | |
| 267 /* */ | |
| 268 /* <Description> */ | |
| 269 /* Transform a glyph image if its format is scalable. */ | |
| 270 /* */ | |
| 271 /* <InOut> */ | |
| 272 /* glyph :: A handle to the target glyph object. */ | |
| 273 /* */ | |
| 274 /* <Input> */ | |
| 275 /* matrix :: A pointer to a 2x2 matrix to apply. */ | |
| 276 /* */ | |
| 277 /* delta :: A pointer to a 2d vector to apply. Coordinates are */ | |
| 278 /* expressed in 1/64th of a pixel. */ | |
| 279 /* */ | |
| 280 /* <Return> */ | |
| 281 /* FreeType error code (if not 0, the glyph format is not scalable). */ | |
| 282 /* */ | |
| 283 /* <Note> */ | |
| 284 /* The 2x2 transformation matrix is also applied to the glyph's */ | |
| 285 /* advance vector. */ | |
| 286 /* */ | |
| 287 FT_EXPORT( FT_Error ) | |
| 288 FT_Glyph_Transform( FT_Glyph glyph, | |
| 289 FT_Matrix* matrix, | |
| 290 FT_Vector* delta ); | |
| 291 | |
| 292 | |
| 293 /*************************************************************************/ | |
| 294 /* */ | |
| 295 /* <Enum> */ | |
| 296 /* FT_Glyph_BBox_Mode */ | |
| 297 /* */ | |
| 298 /* <Description> */ | |
| 299 /* The mode how the values of @FT_Glyph_Get_CBox are returned. */ | |
| 300 /* */ | |
| 301 /* <Values> */ | |
| 302 /* FT_GLYPH_BBOX_UNSCALED :: */ | |
| 303 /* Return unscaled font units. */ | |
| 304 /* */ | |
| 305 /* FT_GLYPH_BBOX_SUBPIXELS :: */ | |
| 306 /* Return unfitted 26.6 coordinates. */ | |
| 307 /* */ | |
| 308 /* FT_GLYPH_BBOX_GRIDFIT :: */ | |
| 309 /* Return grid-fitted 26.6 coordinates. */ | |
| 310 /* */ | |
| 311 /* FT_GLYPH_BBOX_TRUNCATE :: */ | |
| 312 /* Return coordinates in integer pixels. */ | |
| 313 /* */ | |
| 314 /* FT_GLYPH_BBOX_PIXELS :: */ | |
| 315 /* Return grid-fitted pixel coordinates. */ | |
| 316 /* */ | |
| 317 typedef enum FT_Glyph_BBox_Mode_ | |
| 318 { | |
| 319 FT_GLYPH_BBOX_UNSCALED = 0, | |
| 320 FT_GLYPH_BBOX_SUBPIXELS = 0, | |
| 321 FT_GLYPH_BBOX_GRIDFIT = 1, | |
| 322 FT_GLYPH_BBOX_TRUNCATE = 2, | |
| 323 FT_GLYPH_BBOX_PIXELS = 3 | |
| 324 | |
| 325 } FT_Glyph_BBox_Mode; | |
| 326 | |
| 327 | |
| 328 /* these constants are deprecated; use the corresponding */ | |
| 329 /* `FT_Glyph_BBox_Mode' values instead */ | |
| 330 #define ft_glyph_bbox_unscaled FT_GLYPH_BBOX_UNSCALED | |
| 331 #define ft_glyph_bbox_subpixels FT_GLYPH_BBOX_SUBPIXELS | |
| 332 #define ft_glyph_bbox_gridfit FT_GLYPH_BBOX_GRIDFIT | |
| 333 #define ft_glyph_bbox_truncate FT_GLYPH_BBOX_TRUNCATE | |
| 334 #define ft_glyph_bbox_pixels FT_GLYPH_BBOX_PIXELS | |
| 335 | |
| 336 | |
| 337 /*************************************************************************/ | |
| 338 /* */ | |
| 339 /* <Function> */ | |
| 340 /* FT_Glyph_Get_CBox */ | |
| 341 /* */ | |
| 342 /* <Description> */ | |
| 343 /* Return a glyph's `control box'. The control box encloses all the */ | |
| 344 /* outline's points, including Bézier control points. Though it */ | |
| 345 /* coincides with the exact bounding box for most glyphs, it can be */ | |
| 346 /* slightly larger in some situations (like when rotating an outline */ | |
| 347 /* that contains Bézier outside arcs). */ | |
| 348 /* */ | |
| 349 /* Computing the control box is very fast, while getting the bounding */ | |
| 350 /* box can take much more time as it needs to walk over all segments */ | |
| 351 /* and arcs in the outline. To get the latter, you can use the */ | |
| 352 /* `ftbbox' component, which is dedicated to this single task. */ | |
| 353 /* */ | |
| 354 /* <Input> */ | |
| 355 /* glyph :: A handle to the source glyph object. */ | |
| 356 /* */ | |
| 357 /* mode :: The mode that indicates how to interpret the returned */ | |
| 358 /* bounding box values. */ | |
| 359 /* */ | |
| 360 /* <Output> */ | |
| 361 /* acbox :: The glyph coordinate bounding box. Coordinates are */ | |
| 362 /* expressed in 1/64th of pixels if it is grid-fitted. */ | |
| 363 /* */ | |
| 364 /* <Note> */ | |
| 365 /* Coordinates are relative to the glyph origin, using the y~upwards */ | |
| 366 /* convention. */ | |
| 367 /* */ | |
| 368 /* If the glyph has been loaded with @FT_LOAD_NO_SCALE, `bbox_mode' */ | |
| 369 /* must be set to @FT_GLYPH_BBOX_UNSCALED to get unscaled font */ | |
| 370 /* units in 26.6 pixel format. The value @FT_GLYPH_BBOX_SUBPIXELS */ | |
| 371 /* is another name for this constant. */ | |
| 372 /* */ | |
| 373 /* If the font is tricky and the glyph has been loaded with */ | |
| 374 /* @FT_LOAD_NO_SCALE, the resulting CBox is meaningless. To get */ | |
| 375 /* reasonable values for the CBox it is necessary to load the glyph */ | |
| 376 /* at a large ppem value (so that the hinting instructions can */ | |
| 377 /* properly shift and scale the subglyphs), then extracting the CBox, */ | |
| 378 /* which can be eventually converted back to font units. */ | |
| 379 /* */ | |
| 380 /* Note that the maximum coordinates are exclusive, which means that */ | |
| 381 /* one can compute the width and height of the glyph image (be it in */ | |
| 382 /* integer or 26.6 pixels) as: */ | |
| 383 /* */ | |
| 384 /* { */ | |
| 385 /* width = bbox.xMax - bbox.xMin; */ | |
| 386 /* height = bbox.yMax - bbox.yMin; */ | |
| 387 /* } */ | |
| 388 /* */ | |
| 389 /* Note also that for 26.6 coordinates, if `bbox_mode' is set to */ | |
| 390 /* @FT_GLYPH_BBOX_GRIDFIT, the coordinates will also be grid-fitted, */ | |
| 391 /* which corresponds to: */ | |
| 392 /* */ | |
| 393 /* { */ | |
| 394 /* bbox.xMin = FLOOR(bbox.xMin); */ | |
| 395 /* bbox.yMin = FLOOR(bbox.yMin); */ | |
| 396 /* bbox.xMax = CEILING(bbox.xMax); */ | |
| 397 /* bbox.yMax = CEILING(bbox.yMax); */ | |
| 398 /* } */ | |
| 399 /* */ | |
| 400 /* To get the bbox in pixel coordinates, set `bbox_mode' to */ | |
| 401 /* @FT_GLYPH_BBOX_TRUNCATE. */ | |
| 402 /* */ | |
| 403 /* To get the bbox in grid-fitted pixel coordinates, set `bbox_mode' */ | |
| 404 /* to @FT_GLYPH_BBOX_PIXELS. */ | |
| 405 /* */ | |
| 406 FT_EXPORT( void ) | |
| 407 FT_Glyph_Get_CBox( FT_Glyph glyph, | |
| 408 FT_UInt bbox_mode, | |
| 409 FT_BBox *acbox ); | |
| 410 | |
| 411 | |
| 412 /*************************************************************************/ | |
| 413 /* */ | |
| 414 /* <Function> */ | |
| 415 /* FT_Glyph_To_Bitmap */ | |
| 416 /* */ | |
| 417 /* <Description> */ | |
| 418 /* Convert a given glyph object to a bitmap glyph object. */ | |
| 419 /* */ | |
| 420 /* <InOut> */ | |
| 421 /* the_glyph :: A pointer to a handle to the target glyph. */ | |
| 422 /* */ | |
| 423 /* <Input> */ | |
| 424 /* render_mode :: An enumeration that describes how the data is */ | |
| 425 /* rendered. */ | |
| 426 /* */ | |
| 427 /* origin :: A pointer to a vector used to translate the glyph */ | |
| 428 /* image before rendering. Can be~0 (if no */ | |
| 429 /* translation). The origin is expressed in */ | |
| 430 /* 26.6 pixels. */ | |
| 431 /* */ | |
| 432 /* destroy :: A boolean that indicates that the original glyph */ | |
| 433 /* image should be destroyed by this function. It is */ | |
| 434 /* never destroyed in case of error. */ | |
| 435 /* */ | |
| 436 /* <Return> */ | |
| 437 /* FreeType error code. 0~means success. */ | |
| 438 /* */ | |
| 439 /* <Note> */ | |
| 440 /* This function does nothing if the glyph format isn't scalable. */ | |
| 441 /* */ | |
| 442 /* The glyph image is translated with the `origin' vector before */ | |
| 443 /* rendering. */ | |
| 444 /* */ | |
| 445 /* The first parameter is a pointer to an @FT_Glyph handle, that will */ | |
| 446 /* be _replaced_ by this function (with newly allocated data). */ | |
| 447 /* Typically, you would use (omitting error handling): */ | |
| 448 /* */ | |
| 449 /* */ | |
| 450 /* { */ | |
| 451 /* FT_Glyph glyph; */ | |
| 452 /* FT_BitmapGlyph glyph_bitmap; */ | |
| 453 /* */ | |
| 454 /* */ | |
| 455 /* // load glyph */ | |
| 456 /* error = FT_Load_Char( face, glyph_index, FT_LOAD_DEFAUT ); */ | |
| 457 /* */ | |
| 458 /* // extract glyph image */ | |
| 459 /* error = FT_Get_Glyph( face->glyph, &glyph ); */ | |
| 460 /* */ | |
| 461 /* // convert to a bitmap (default render mode + destroying old) */ | |
| 462 /* if ( glyph->format != FT_GLYPH_FORMAT_BITMAP ) */ | |
| 463 /* { */ | |
| 464 /* error = FT_Glyph_To_Bitmap( &glyph, FT_RENDER_MODE_NORMAL, */ | |
| 465 /* 0, 1 ); */ | |
| 466 /* if ( error ) // `glyph' unchanged */ | |
| 467 /* ... */ | |
| 468 /* } */ | |
| 469 /* */ | |
| 470 /* // access bitmap content by typecasting */ | |
| 471 /* glyph_bitmap = (FT_BitmapGlyph)glyph; */ | |
| 472 /* */ | |
| 473 /* // do funny stuff with it, like blitting/drawing */ | |
| 474 /* ... */ | |
| 475 /* */ | |
| 476 /* // discard glyph image (bitmap or not) */ | |
| 477 /* FT_Done_Glyph( glyph ); */ | |
| 478 /* } */ | |
| 479 /* */ | |
| 480 /* */ | |
| 481 /* Here another example, again without error handling: */ | |
| 482 /* */ | |
| 483 /* */ | |
| 484 /* { */ | |
| 485 /* FT_Glyph glyphs[MAX_GLYPHS] */ | |
| 486 /* */ | |
| 487 /* */ | |
| 488 /* ... */ | |
| 489 /* */ | |
| 490 /* for ( idx = 0; i < MAX_GLYPHS; i++ ) */ | |
| 491 /* error = FT_Load_Glyph( face, idx, FT_LOAD_DEFAULT ) || */ | |
| 492 /* FT_Get_Glyph ( face->glyph, &glyph[idx] ); */ | |
| 493 /* */ | |
| 494 /* ... */ | |
| 495 /* */ | |
| 496 /* for ( idx = 0; i < MAX_GLYPHS; i++ ) */ | |
| 497 /* { */ | |
| 498 /* FT_Glyph bitmap = glyphs[idx]; */ | |
| 499 /* */ | |
| 500 /* */ | |
| 501 /* ... */ | |
| 502 /* */ | |
| 503 /* // after this call, `bitmap' no longer points into */ | |
| 504 /* // the `glyphs' array (and the old value isn't destroyed) */ | |
| 505 /* FT_Glyph_To_Bitmap( &bitmap, FT_RENDER_MODE_MONO, 0, 0 ); */ | |
| 506 /* */ | |
| 507 /* ... */ | |
| 508 /* */ | |
| 509 /* FT_Done_Glyph( bitmap ); */ | |
| 510 /* } */ | |
| 511 /* */ | |
| 512 /* ... */ | |
| 513 /* */ | |
| 514 /* for ( idx = 0; i < MAX_GLYPHS; i++ ) */ | |
| 515 /* FT_Done_Glyph( glyphs[idx] ); */ | |
| 516 /* } */ | |
| 517 /* */ | |
| 518 FT_EXPORT( FT_Error ) | |
| 519 FT_Glyph_To_Bitmap( FT_Glyph* the_glyph, | |
| 520 FT_Render_Mode render_mode, | |
| 521 FT_Vector* origin, | |
| 522 FT_Bool destroy ); | |
| 523 | |
| 524 | |
| 525 /*************************************************************************/ | |
| 526 /* */ | |
| 527 /* <Function> */ | |
| 528 /* FT_Done_Glyph */ | |
| 529 /* */ | |
| 530 /* <Description> */ | |
| 531 /* Destroy a given glyph. */ | |
| 532 /* */ | |
| 533 /* <Input> */ | |
| 534 /* glyph :: A handle to the target glyph object. */ | |
| 535 /* */ | |
| 536 FT_EXPORT( void ) | |
| 537 FT_Done_Glyph( FT_Glyph glyph ); | |
| 538 | |
| 539 /* */ | |
| 540 | |
| 541 | |
| 542 /* other helpful functions */ | |
| 543 | |
| 544 /*************************************************************************/ | |
| 545 /* */ | |
| 546 /* <Section> */ | |
| 547 /* computations */ | |
| 548 /* */ | |
| 549 /*************************************************************************/ | |
| 550 | |
| 551 | |
| 552 /*************************************************************************/ | |
| 553 /* */ | |
| 554 /* <Function> */ | |
| 555 /* FT_Matrix_Multiply */ | |
| 556 /* */ | |
| 557 /* <Description> */ | |
| 558 /* Perform the matrix operation `b = a*b'. */ | |
| 559 /* */ | |
| 560 /* <Input> */ | |
| 561 /* a :: A pointer to matrix `a'. */ | |
| 562 /* */ | |
| 563 /* <InOut> */ | |
| 564 /* b :: A pointer to matrix `b'. */ | |
| 565 /* */ | |
| 566 /* <Note> */ | |
| 567 /* The result is undefined if either `a' or `b' is zero. */ | |
| 568 /* */ | |
| 569 FT_EXPORT( void ) | |
| 570 FT_Matrix_Multiply( const FT_Matrix* a, | |
| 571 FT_Matrix* b ); | |
| 572 | |
| 573 | |
| 574 /*************************************************************************/ | |
| 575 /* */ | |
| 576 /* <Function> */ | |
| 577 /* FT_Matrix_Invert */ | |
| 578 /* */ | |
| 579 /* <Description> */ | |
| 580 /* Invert a 2x2 matrix. Return an error if it can't be inverted. */ | |
| 581 /* */ | |
| 582 /* <InOut> */ | |
| 583 /* matrix :: A pointer to the target matrix. Remains untouched in */ | |
| 584 /* case of error. */ | |
| 585 /* */ | |
| 586 /* <Return> */ | |
| 587 /* FreeType error code. 0~means success. */ | |
| 588 /* */ | |
| 589 FT_EXPORT( FT_Error ) | |
| 590 FT_Matrix_Invert( FT_Matrix* matrix ); | |
| 591 | |
| 592 /* */ | |
| 593 | |
| 594 | |
| 595 FT_END_HEADER | |
| 596 | |
| 597 #endif /* __FTGLYPH_H__ */ | |
| 598 | |
| 599 | |
| 600 /* END */ | |
| 601 | |
| 602 | |
| 603 /* Local Variables: */ | |
| 604 /* coding: utf-8 */ | |
| 605 /* End: */ | |
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Chromium Code Reviews
Issue 1416993005:
Merge to XFA: Update bundled freetype to 2.6.1 (Closed)
Base URL: https://pdfium.googlesource.com/pdfium.git@xfa