5172
|
1 |
/***************************************************************************/
|
|
2 |
/* */
|
|
3 |
/* pshints.h */
|
|
4 |
/* */
|
|
5 |
/* Interface to Postscript-specific (Type 1 and Type 2) hints */
|
|
6 |
/* recorders (specification only). These are used to support native */
|
|
7 |
/* T1/T2 hints in the `type1', `cid', and `cff' font drivers. */
|
|
8 |
/* */
|
|
9 |
/* Copyright 2001, 2002, 2003, 2005, 2006, 2007, 2009 by */
|
|
10 |
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
|
|
11 |
/* */
|
|
12 |
/* This file is part of the FreeType project, and may only be used, */
|
|
13 |
/* modified, and distributed under the terms of the FreeType project */
|
|
14 |
/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
|
|
15 |
/* this file you indicate that you have read the license and */
|
|
16 |
/* understand and accept it fully. */
|
|
17 |
/* */
|
|
18 |
/***************************************************************************/
|
|
19 |
|
|
20 |
|
|
21 |
#ifndef __PSHINTS_H__
|
|
22 |
#define __PSHINTS_H__
|
|
23 |
|
|
24 |
|
|
25 |
#include <ft2build.h>
|
|
26 |
#include FT_FREETYPE_H
|
|
27 |
#include FT_TYPE1_TABLES_H
|
|
28 |
|
|
29 |
|
|
30 |
FT_BEGIN_HEADER
|
|
31 |
|
|
32 |
|
|
33 |
/*************************************************************************/
|
|
34 |
/*************************************************************************/
|
|
35 |
/***** *****/
|
|
36 |
/***** INTERNAL REPRESENTATION OF GLOBALS *****/
|
|
37 |
/***** *****/
|
|
38 |
/*************************************************************************/
|
|
39 |
/*************************************************************************/
|
|
40 |
|
|
41 |
typedef struct PSH_GlobalsRec_* PSH_Globals;
|
|
42 |
|
|
43 |
typedef FT_Error
|
|
44 |
(*PSH_Globals_NewFunc)( FT_Memory memory,
|
|
45 |
T1_Private* private_dict,
|
|
46 |
PSH_Globals* aglobals );
|
|
47 |
|
|
48 |
typedef FT_Error
|
|
49 |
(*PSH_Globals_SetScaleFunc)( PSH_Globals globals,
|
|
50 |
FT_Fixed x_scale,
|
|
51 |
FT_Fixed y_scale,
|
|
52 |
FT_Fixed x_delta,
|
|
53 |
FT_Fixed y_delta );
|
|
54 |
|
|
55 |
typedef void
|
|
56 |
(*PSH_Globals_DestroyFunc)( PSH_Globals globals );
|
|
57 |
|
|
58 |
|
|
59 |
typedef struct PSH_Globals_FuncsRec_
|
|
60 |
{
|
|
61 |
PSH_Globals_NewFunc create;
|
|
62 |
PSH_Globals_SetScaleFunc set_scale;
|
|
63 |
PSH_Globals_DestroyFunc destroy;
|
|
64 |
|
|
65 |
} PSH_Globals_FuncsRec, *PSH_Globals_Funcs;
|
|
66 |
|
|
67 |
|
|
68 |
/*************************************************************************/
|
|
69 |
/*************************************************************************/
|
|
70 |
/***** *****/
|
|
71 |
/***** PUBLIC TYPE 1 HINTS RECORDER *****/
|
|
72 |
/***** *****/
|
|
73 |
/*************************************************************************/
|
|
74 |
/*************************************************************************/
|
|
75 |
|
|
76 |
/*************************************************************************
|
|
77 |
*
|
|
78 |
* @type:
|
|
79 |
* T1_Hints
|
|
80 |
*
|
|
81 |
* @description:
|
|
82 |
* This is a handle to an opaque structure used to record glyph hints
|
|
83 |
* from a Type 1 character glyph character string.
|
|
84 |
*
|
|
85 |
* The methods used to operate on this object are defined by the
|
|
86 |
* @T1_Hints_FuncsRec structure. Recording glyph hints is normally
|
|
87 |
* achieved through the following scheme:
|
|
88 |
*
|
|
89 |
* - Open a new hint recording session by calling the `open' method.
|
|
90 |
* This rewinds the recorder and prepare it for new input.
|
|
91 |
*
|
|
92 |
* - For each hint found in the glyph charstring, call the corresponding
|
|
93 |
* method (`stem', `stem3', or `reset'). Note that these functions do
|
|
94 |
* not return an error code.
|
|
95 |
*
|
|
96 |
* - Close the recording session by calling the `close' method. It
|
|
97 |
* returns an error code if the hints were invalid or something
|
|
98 |
* strange happened (e.g., memory shortage).
|
|
99 |
*
|
|
100 |
* The hints accumulated in the object can later be used by the
|
|
101 |
* PostScript hinter.
|
|
102 |
*
|
|
103 |
*/
|
|
104 |
typedef struct T1_HintsRec_* T1_Hints;
|
|
105 |
|
|
106 |
|
|
107 |
/*************************************************************************
|
|
108 |
*
|
|
109 |
* @type:
|
|
110 |
* T1_Hints_Funcs
|
|
111 |
*
|
|
112 |
* @description:
|
|
113 |
* A pointer to the @T1_Hints_FuncsRec structure that defines the API of
|
|
114 |
* a given @T1_Hints object.
|
|
115 |
*
|
|
116 |
*/
|
|
117 |
typedef const struct T1_Hints_FuncsRec_* T1_Hints_Funcs;
|
|
118 |
|
|
119 |
|
|
120 |
/*************************************************************************
|
|
121 |
*
|
|
122 |
* @functype:
|
|
123 |
* T1_Hints_OpenFunc
|
|
124 |
*
|
|
125 |
* @description:
|
|
126 |
* A method of the @T1_Hints class used to prepare it for a new Type 1
|
|
127 |
* hints recording session.
|
|
128 |
*
|
|
129 |
* @input:
|
|
130 |
* hints ::
|
|
131 |
* A handle to the Type 1 hints recorder.
|
|
132 |
*
|
|
133 |
* @note:
|
|
134 |
* You should always call the @T1_Hints_CloseFunc method in order to
|
|
135 |
* close an opened recording session.
|
|
136 |
*
|
|
137 |
*/
|
|
138 |
typedef void
|
|
139 |
(*T1_Hints_OpenFunc)( T1_Hints hints );
|
|
140 |
|
|
141 |
|
|
142 |
/*************************************************************************
|
|
143 |
*
|
|
144 |
* @functype:
|
|
145 |
* T1_Hints_SetStemFunc
|
|
146 |
*
|
|
147 |
* @description:
|
|
148 |
* A method of the @T1_Hints class used to record a new horizontal or
|
|
149 |
* vertical stem. This corresponds to the Type 1 `hstem' and `vstem'
|
|
150 |
* operators.
|
|
151 |
*
|
|
152 |
* @input:
|
|
153 |
* hints ::
|
|
154 |
* A handle to the Type 1 hints recorder.
|
|
155 |
*
|
|
156 |
* dimension ::
|
|
157 |
* 0 for horizontal stems (hstem), 1 for vertical ones (vstem).
|
|
158 |
*
|
|
159 |
* coords ::
|
|
160 |
* Array of 2 coordinates in 16.16 format, used as (position,length)
|
|
161 |
* stem descriptor.
|
|
162 |
*
|
|
163 |
* @note:
|
|
164 |
* Use vertical coordinates (y) for horizontal stems (dim=0). Use
|
|
165 |
* horizontal coordinates (x) for vertical stems (dim=1).
|
|
166 |
*
|
|
167 |
* `coords[0]' is the absolute stem position (lowest coordinate);
|
|
168 |
* `coords[1]' is the length.
|
|
169 |
*
|
|
170 |
* The length can be negative, in which case it must be either -20 or
|
|
171 |
* -21. It is interpreted as a `ghost' stem, according to the Type 1
|
|
172 |
* specification.
|
|
173 |
*
|
|
174 |
* If the length is -21 (corresponding to a bottom ghost stem), then
|
|
175 |
* the real stem position is `coords[0]+coords[1]'.
|
|
176 |
*
|
|
177 |
*/
|
|
178 |
typedef void
|
|
179 |
(*T1_Hints_SetStemFunc)( T1_Hints hints,
|
|
180 |
FT_UInt dimension,
|
|
181 |
FT_Fixed* coords );
|
|
182 |
|
|
183 |
|
|
184 |
/*************************************************************************
|
|
185 |
*
|
|
186 |
* @functype:
|
|
187 |
* T1_Hints_SetStem3Func
|
|
188 |
*
|
|
189 |
* @description:
|
|
190 |
* A method of the @T1_Hints class used to record three
|
|
191 |
* counter-controlled horizontal or vertical stems at once.
|
|
192 |
*
|
|
193 |
* @input:
|
|
194 |
* hints ::
|
|
195 |
* A handle to the Type 1 hints recorder.
|
|
196 |
*
|
|
197 |
* dimension ::
|
|
198 |
* 0 for horizontal stems, 1 for vertical ones.
|
|
199 |
*
|
|
200 |
* coords ::
|
|
201 |
* An array of 6 values in 16.16 format, holding 3 (position,length)
|
|
202 |
* pairs for the counter-controlled stems.
|
|
203 |
*
|
|
204 |
* @note:
|
|
205 |
* Use vertical coordinates (y) for horizontal stems (dim=0). Use
|
|
206 |
* horizontal coordinates (x) for vertical stems (dim=1).
|
|
207 |
*
|
|
208 |
* The lengths cannot be negative (ghost stems are never
|
|
209 |
* counter-controlled).
|
|
210 |
*
|
|
211 |
*/
|
|
212 |
typedef void
|
|
213 |
(*T1_Hints_SetStem3Func)( T1_Hints hints,
|
|
214 |
FT_UInt dimension,
|
|
215 |
FT_Fixed* coords );
|
|
216 |
|
|
217 |
|
|
218 |
/*************************************************************************
|
|
219 |
*
|
|
220 |
* @functype:
|
|
221 |
* T1_Hints_ResetFunc
|
|
222 |
*
|
|
223 |
* @description:
|
|
224 |
* A method of the @T1_Hints class used to reset the stems hints in a
|
|
225 |
* recording session.
|
|
226 |
*
|
|
227 |
* @input:
|
|
228 |
* hints ::
|
|
229 |
* A handle to the Type 1 hints recorder.
|
|
230 |
*
|
|
231 |
* end_point ::
|
|
232 |
* The index of the last point in the input glyph in which the
|
|
233 |
* previously defined hints apply.
|
|
234 |
*
|
|
235 |
*/
|
|
236 |
typedef void
|
|
237 |
(*T1_Hints_ResetFunc)( T1_Hints hints,
|
|
238 |
FT_UInt end_point );
|
|
239 |
|
|
240 |
|
|
241 |
/*************************************************************************
|
|
242 |
*
|
|
243 |
* @functype:
|
|
244 |
* T1_Hints_CloseFunc
|
|
245 |
*
|
|
246 |
* @description:
|
|
247 |
* A method of the @T1_Hints class used to close a hint recording
|
|
248 |
* session.
|
|
249 |
*
|
|
250 |
* @input:
|
|
251 |
* hints ::
|
|
252 |
* A handle to the Type 1 hints recorder.
|
|
253 |
*
|
|
254 |
* end_point ::
|
|
255 |
* The index of the last point in the input glyph.
|
|
256 |
*
|
|
257 |
* @return:
|
|
258 |
* FreeType error code. 0 means success.
|
|
259 |
*
|
|
260 |
* @note:
|
|
261 |
* The error code is set to indicate that an error occurred during the
|
|
262 |
* recording session.
|
|
263 |
*
|
|
264 |
*/
|
|
265 |
typedef FT_Error
|
|
266 |
(*T1_Hints_CloseFunc)( T1_Hints hints,
|
|
267 |
FT_UInt end_point );
|
|
268 |
|
|
269 |
|
|
270 |
/*************************************************************************
|
|
271 |
*
|
|
272 |
* @functype:
|
|
273 |
* T1_Hints_ApplyFunc
|
|
274 |
*
|
|
275 |
* @description:
|
|
276 |
* A method of the @T1_Hints class used to apply hints to the
|
|
277 |
* corresponding glyph outline. Must be called once all hints have been
|
|
278 |
* recorded.
|
|
279 |
*
|
|
280 |
* @input:
|
|
281 |
* hints ::
|
|
282 |
* A handle to the Type 1 hints recorder.
|
|
283 |
*
|
|
284 |
* outline ::
|
|
285 |
* A pointer to the target outline descriptor.
|
|
286 |
*
|
|
287 |
* globals ::
|
|
288 |
* The hinter globals for this font.
|
|
289 |
*
|
|
290 |
* hint_mode ::
|
|
291 |
* Hinting information.
|
|
292 |
*
|
|
293 |
* @return:
|
|
294 |
* FreeType error code. 0 means success.
|
|
295 |
*
|
|
296 |
* @note:
|
|
297 |
* On input, all points within the outline are in font coordinates. On
|
|
298 |
* output, they are in 1/64th of pixels.
|
|
299 |
*
|
|
300 |
* The scaling transformation is taken from the `globals' object which
|
|
301 |
* must correspond to the same font as the glyph.
|
|
302 |
*
|
|
303 |
*/
|
|
304 |
typedef FT_Error
|
|
305 |
(*T1_Hints_ApplyFunc)( T1_Hints hints,
|
|
306 |
FT_Outline* outline,
|
|
307 |
PSH_Globals globals,
|
|
308 |
FT_Render_Mode hint_mode );
|
|
309 |
|
|
310 |
|
|
311 |
/*************************************************************************
|
|
312 |
*
|
|
313 |
* @struct:
|
|
314 |
* T1_Hints_FuncsRec
|
|
315 |
*
|
|
316 |
* @description:
|
|
317 |
* The structure used to provide the API to @T1_Hints objects.
|
|
318 |
*
|
|
319 |
* @fields:
|
|
320 |
* hints ::
|
|
321 |
* A handle to the T1 Hints recorder.
|
|
322 |
*
|
|
323 |
* open ::
|
|
324 |
* The function to open a recording session.
|
|
325 |
*
|
|
326 |
* close ::
|
|
327 |
* The function to close a recording session.
|
|
328 |
*
|
|
329 |
* stem ::
|
|
330 |
* The function to set a simple stem.
|
|
331 |
*
|
|
332 |
* stem3 ::
|
|
333 |
* The function to set counter-controlled stems.
|
|
334 |
*
|
|
335 |
* reset ::
|
|
336 |
* The function to reset stem hints.
|
|
337 |
*
|
|
338 |
* apply ::
|
|
339 |
* The function to apply the hints to the corresponding glyph outline.
|
|
340 |
*
|
|
341 |
*/
|
|
342 |
typedef struct T1_Hints_FuncsRec_
|
|
343 |
{
|
|
344 |
T1_Hints hints;
|
|
345 |
T1_Hints_OpenFunc open;
|
|
346 |
T1_Hints_CloseFunc close;
|
|
347 |
T1_Hints_SetStemFunc stem;
|
|
348 |
T1_Hints_SetStem3Func stem3;
|
|
349 |
T1_Hints_ResetFunc reset;
|
|
350 |
T1_Hints_ApplyFunc apply;
|
|
351 |
|
|
352 |
} T1_Hints_FuncsRec;
|
|
353 |
|
|
354 |
|
|
355 |
/*************************************************************************/
|
|
356 |
/*************************************************************************/
|
|
357 |
/***** *****/
|
|
358 |
/***** PUBLIC TYPE 2 HINTS RECORDER *****/
|
|
359 |
/***** *****/
|
|
360 |
/*************************************************************************/
|
|
361 |
/*************************************************************************/
|
|
362 |
|
|
363 |
/*************************************************************************
|
|
364 |
*
|
|
365 |
* @type:
|
|
366 |
* T2_Hints
|
|
367 |
*
|
|
368 |
* @description:
|
|
369 |
* This is a handle to an opaque structure used to record glyph hints
|
|
370 |
* from a Type 2 character glyph character string.
|
|
371 |
*
|
|
372 |
* The methods used to operate on this object are defined by the
|
|
373 |
* @T2_Hints_FuncsRec structure. Recording glyph hints is normally
|
|
374 |
* achieved through the following scheme:
|
|
375 |
*
|
|
376 |
* - Open a new hint recording session by calling the `open' method.
|
|
377 |
* This rewinds the recorder and prepare it for new input.
|
|
378 |
*
|
|
379 |
* - For each hint found in the glyph charstring, call the corresponding
|
|
380 |
* method (`stems', `hintmask', `counters'). Note that these
|
|
381 |
* functions do not return an error code.
|
|
382 |
*
|
|
383 |
* - Close the recording session by calling the `close' method. It
|
|
384 |
* returns an error code if the hints were invalid or something
|
|
385 |
* strange happened (e.g., memory shortage).
|
|
386 |
*
|
|
387 |
* The hints accumulated in the object can later be used by the
|
|
388 |
* Postscript hinter.
|
|
389 |
*
|
|
390 |
*/
|
|
391 |
typedef struct T2_HintsRec_* T2_Hints;
|
|
392 |
|
|
393 |
|
|
394 |
/*************************************************************************
|
|
395 |
*
|
|
396 |
* @type:
|
|
397 |
* T2_Hints_Funcs
|
|
398 |
*
|
|
399 |
* @description:
|
|
400 |
* A pointer to the @T2_Hints_FuncsRec structure that defines the API of
|
|
401 |
* a given @T2_Hints object.
|
|
402 |
*
|
|
403 |
*/
|
|
404 |
typedef const struct T2_Hints_FuncsRec_* T2_Hints_Funcs;
|
|
405 |
|
|
406 |
|
|
407 |
/*************************************************************************
|
|
408 |
*
|
|
409 |
* @functype:
|
|
410 |
* T2_Hints_OpenFunc
|
|
411 |
*
|
|
412 |
* @description:
|
|
413 |
* A method of the @T2_Hints class used to prepare it for a new Type 2
|
|
414 |
* hints recording session.
|
|
415 |
*
|
|
416 |
* @input:
|
|
417 |
* hints ::
|
|
418 |
* A handle to the Type 2 hints recorder.
|
|
419 |
*
|
|
420 |
* @note:
|
|
421 |
* You should always call the @T2_Hints_CloseFunc method in order to
|
|
422 |
* close an opened recording session.
|
|
423 |
*
|
|
424 |
*/
|
|
425 |
typedef void
|
|
426 |
(*T2_Hints_OpenFunc)( T2_Hints hints );
|
|
427 |
|
|
428 |
|
|
429 |
/*************************************************************************
|
|
430 |
*
|
|
431 |
* @functype:
|
|
432 |
* T2_Hints_StemsFunc
|
|
433 |
*
|
|
434 |
* @description:
|
|
435 |
* A method of the @T2_Hints class used to set the table of stems in
|
|
436 |
* either the vertical or horizontal dimension. Equivalent to the
|
|
437 |
* `hstem', `vstem', `hstemhm', and `vstemhm' Type 2 operators.
|
|
438 |
*
|
|
439 |
* @input:
|
|
440 |
* hints ::
|
|
441 |
* A handle to the Type 2 hints recorder.
|
|
442 |
*
|
|
443 |
* dimension ::
|
|
444 |
* 0 for horizontal stems (hstem), 1 for vertical ones (vstem).
|
|
445 |
*
|
|
446 |
* count ::
|
|
447 |
* The number of stems.
|
|
448 |
*
|
|
449 |
* coords ::
|
|
450 |
* An array of `count' (position,length) pairs in 16.16 format.
|
|
451 |
*
|
|
452 |
* @note:
|
|
453 |
* Use vertical coordinates (y) for horizontal stems (dim=0). Use
|
|
454 |
* horizontal coordinates (x) for vertical stems (dim=1).
|
|
455 |
*
|
|
456 |
* There are `2*count' elements in the `coords' array. Each even
|
|
457 |
* element is an absolute position in font units, each odd element is a
|
|
458 |
* length in font units.
|
|
459 |
*
|
|
460 |
* A length can be negative, in which case it must be either -20 or
|
|
461 |
* -21. It is interpreted as a `ghost' stem, according to the Type 1
|
|
462 |
* specification.
|
|
463 |
*
|
|
464 |
*/
|
|
465 |
typedef void
|
|
466 |
(*T2_Hints_StemsFunc)( T2_Hints hints,
|
|
467 |
FT_UInt dimension,
|
|
468 |
FT_UInt count,
|
|
469 |
FT_Fixed* coordinates );
|
|
470 |
|
|
471 |
|
|
472 |
/*************************************************************************
|
|
473 |
*
|
|
474 |
* @functype:
|
|
475 |
* T2_Hints_MaskFunc
|
|
476 |
*
|
|
477 |
* @description:
|
|
478 |
* A method of the @T2_Hints class used to set a given hintmask (this
|
|
479 |
* corresponds to the `hintmask' Type 2 operator).
|
|
480 |
*
|
|
481 |
* @input:
|
|
482 |
* hints ::
|
|
483 |
* A handle to the Type 2 hints recorder.
|
|
484 |
*
|
|
485 |
* end_point ::
|
|
486 |
* The glyph index of the last point to which the previously defined
|
|
487 |
* or activated hints apply.
|
|
488 |
*
|
|
489 |
* bit_count ::
|
|
490 |
* The number of bits in the hint mask.
|
|
491 |
*
|
|
492 |
* bytes ::
|
|
493 |
* An array of bytes modelling the hint mask.
|
|
494 |
*
|
|
495 |
* @note:
|
|
496 |
* If the hintmask starts the charstring (before any glyph point
|
|
497 |
* definition), the value of `end_point' should be 0.
|
|
498 |
*
|
|
499 |
* `bit_count' is the number of meaningful bits in the `bytes' array; it
|
|
500 |
* must be equal to the total number of hints defined so far (i.e.,
|
|
501 |
* horizontal+verticals).
|
|
502 |
*
|
|
503 |
* The `bytes' array can come directly from the Type 2 charstring and
|
|
504 |
* respects the same format.
|
|
505 |
*
|
|
506 |
*/
|
|
507 |
typedef void
|
|
508 |
(*T2_Hints_MaskFunc)( T2_Hints hints,
|
|
509 |
FT_UInt end_point,
|
|
510 |
FT_UInt bit_count,
|
|
511 |
const FT_Byte* bytes );
|
|
512 |
|
|
513 |
|
|
514 |
/*************************************************************************
|
|
515 |
*
|
|
516 |
* @functype:
|
|
517 |
* T2_Hints_CounterFunc
|
|
518 |
*
|
|
519 |
* @description:
|
|
520 |
* A method of the @T2_Hints class used to set a given counter mask
|
|
521 |
* (this corresponds to the `hintmask' Type 2 operator).
|
|
522 |
*
|
|
523 |
* @input:
|
|
524 |
* hints ::
|
|
525 |
* A handle to the Type 2 hints recorder.
|
|
526 |
*
|
|
527 |
* end_point ::
|
|
528 |
* A glyph index of the last point to which the previously defined or
|
|
529 |
* active hints apply.
|
|
530 |
*
|
|
531 |
* bit_count ::
|
|
532 |
* The number of bits in the hint mask.
|
|
533 |
*
|
|
534 |
* bytes ::
|
|
535 |
* An array of bytes modelling the hint mask.
|
|
536 |
*
|
|
537 |
* @note:
|
|
538 |
* If the hintmask starts the charstring (before any glyph point
|
|
539 |
* definition), the value of `end_point' should be 0.
|
|
540 |
*
|
|
541 |
* `bit_count' is the number of meaningful bits in the `bytes' array; it
|
|
542 |
* must be equal to the total number of hints defined so far (i.e.,
|
|
543 |
* horizontal+verticals).
|
|
544 |
*
|
|
545 |
* The `bytes' array can come directly from the Type 2 charstring and
|
|
546 |
* respects the same format.
|
|
547 |
*
|
|
548 |
*/
|
|
549 |
typedef void
|
|
550 |
(*T2_Hints_CounterFunc)( T2_Hints hints,
|
|
551 |
FT_UInt bit_count,
|
|
552 |
const FT_Byte* bytes );
|
|
553 |
|
|
554 |
|
|
555 |
/*************************************************************************
|
|
556 |
*
|
|
557 |
* @functype:
|
|
558 |
* T2_Hints_CloseFunc
|
|
559 |
*
|
|
560 |
* @description:
|
|
561 |
* A method of the @T2_Hints class used to close a hint recording
|
|
562 |
* session.
|
|
563 |
*
|
|
564 |
* @input:
|
|
565 |
* hints ::
|
|
566 |
* A handle to the Type 2 hints recorder.
|
|
567 |
*
|
|
568 |
* end_point ::
|
|
569 |
* The index of the last point in the input glyph.
|
|
570 |
*
|
|
571 |
* @return:
|
|
572 |
* FreeType error code. 0 means success.
|
|
573 |
*
|
|
574 |
* @note:
|
|
575 |
* The error code is set to indicate that an error occurred during the
|
|
576 |
* recording session.
|
|
577 |
*
|
|
578 |
*/
|
|
579 |
typedef FT_Error
|
|
580 |
(*T2_Hints_CloseFunc)( T2_Hints hints,
|
|
581 |
FT_UInt end_point );
|
|
582 |
|
|
583 |
|
|
584 |
/*************************************************************************
|
|
585 |
*
|
|
586 |
* @functype:
|
|
587 |
* T2_Hints_ApplyFunc
|
|
588 |
*
|
|
589 |
* @description:
|
|
590 |
* A method of the @T2_Hints class used to apply hints to the
|
|
591 |
* corresponding glyph outline. Must be called after the `close'
|
|
592 |
* method.
|
|
593 |
*
|
|
594 |
* @input:
|
|
595 |
* hints ::
|
|
596 |
* A handle to the Type 2 hints recorder.
|
|
597 |
*
|
|
598 |
* outline ::
|
|
599 |
* A pointer to the target outline descriptor.
|
|
600 |
*
|
|
601 |
* globals ::
|
|
602 |
* The hinter globals for this font.
|
|
603 |
*
|
|
604 |
* hint_mode ::
|
|
605 |
* Hinting information.
|
|
606 |
*
|
|
607 |
* @return:
|
|
608 |
* FreeType error code. 0 means success.
|
|
609 |
*
|
|
610 |
* @note:
|
|
611 |
* On input, all points within the outline are in font coordinates. On
|
|
612 |
* output, they are in 1/64th of pixels.
|
|
613 |
*
|
|
614 |
* The scaling transformation is taken from the `globals' object which
|
|
615 |
* must correspond to the same font than the glyph.
|
|
616 |
*
|
|
617 |
*/
|
|
618 |
typedef FT_Error
|
|
619 |
(*T2_Hints_ApplyFunc)( T2_Hints hints,
|
|
620 |
FT_Outline* outline,
|
|
621 |
PSH_Globals globals,
|
|
622 |
FT_Render_Mode hint_mode );
|
|
623 |
|
|
624 |
|
|
625 |
/*************************************************************************
|
|
626 |
*
|
|
627 |
* @struct:
|
|
628 |
* T2_Hints_FuncsRec
|
|
629 |
*
|
|
630 |
* @description:
|
|
631 |
* The structure used to provide the API to @T2_Hints objects.
|
|
632 |
*
|
|
633 |
* @fields:
|
|
634 |
* hints ::
|
|
635 |
* A handle to the T2 hints recorder object.
|
|
636 |
*
|
|
637 |
* open ::
|
|
638 |
* The function to open a recording session.
|
|
639 |
*
|
|
640 |
* close ::
|
|
641 |
* The function to close a recording session.
|
|
642 |
*
|
|
643 |
* stems ::
|
|
644 |
* The function to set the dimension's stems table.
|
|
645 |
*
|
|
646 |
* hintmask ::
|
|
647 |
* The function to set hint masks.
|
|
648 |
*
|
|
649 |
* counter ::
|
|
650 |
* The function to set counter masks.
|
|
651 |
*
|
|
652 |
* apply ::
|
|
653 |
* The function to apply the hints on the corresponding glyph outline.
|
|
654 |
*
|
|
655 |
*/
|
|
656 |
typedef struct T2_Hints_FuncsRec_
|
|
657 |
{
|
|
658 |
T2_Hints hints;
|
|
659 |
T2_Hints_OpenFunc open;
|
|
660 |
T2_Hints_CloseFunc close;
|
|
661 |
T2_Hints_StemsFunc stems;
|
|
662 |
T2_Hints_MaskFunc hintmask;
|
|
663 |
T2_Hints_CounterFunc counter;
|
|
664 |
T2_Hints_ApplyFunc apply;
|
|
665 |
|
|
666 |
} T2_Hints_FuncsRec;
|
|
667 |
|
|
668 |
|
|
669 |
/* */
|
|
670 |
|
|
671 |
|
|
672 |
typedef struct PSHinter_Interface_
|
|
673 |
{
|
|
674 |
PSH_Globals_Funcs (*get_globals_funcs)( FT_Module module );
|
|
675 |
T1_Hints_Funcs (*get_t1_funcs) ( FT_Module module );
|
|
676 |
T2_Hints_Funcs (*get_t2_funcs) ( FT_Module module );
|
|
677 |
|
|
678 |
} PSHinter_Interface;
|
|
679 |
|
|
680 |
typedef PSHinter_Interface* PSHinter_Service;
|
|
681 |
|
|
682 |
#ifndef FT_CONFIG_OPTION_PIC
|
|
683 |
|
|
684 |
#define FT_DEFINE_PSHINTER_INTERFACE(class_, get_globals_funcs_, \
|
|
685 |
get_t1_funcs_, get_t2_funcs_) \
|
|
686 |
static const PSHinter_Interface class_ = \
|
|
687 |
{ \
|
|
688 |
get_globals_funcs_, get_t1_funcs_, get_t2_funcs_ \
|
|
689 |
};
|
|
690 |
|
|
691 |
#else /* FT_CONFIG_OPTION_PIC */
|
|
692 |
|
|
693 |
#define FT_DEFINE_PSHINTER_INTERFACE(class_, get_globals_funcs_, \
|
|
694 |
get_t1_funcs_, get_t2_funcs_) \
|
|
695 |
void \
|
|
696 |
FT_Init_Class_##class_( FT_Library library, \
|
|
697 |
PSHinter_Interface* clazz) \
|
|
698 |
{ \
|
|
699 |
FT_UNUSED(library); \
|
|
700 |
clazz->get_globals_funcs = get_globals_funcs_; \
|
|
701 |
clazz->get_t1_funcs = get_t1_funcs_; \
|
|
702 |
clazz->get_t2_funcs = get_t2_funcs_; \
|
|
703 |
}
|
|
704 |
|
|
705 |
#endif /* FT_CONFIG_OPTION_PIC */
|
|
706 |
|
|
707 |
FT_END_HEADER
|
|
708 |
|
|
709 |
#endif /* __PSHINTS_H__ */
|
|
710 |
|
|
711 |
|
|
712 |
/* END */
|