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a68fda4a AR |
1 | /* Font back-end driver for the NeXT/Open/GNUstep and MacOSX window system. |
2 | See font.h | |
3 | Copyright (C) 2006, 2007, 2008 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
20 | Boston, MA 02110-1301, USA. | |
21 | ||
22 | Author: Adrian Robert (arobert@cogsci.ucsd.edu) | |
23 | */ | |
24 | ||
25 | #include "config.h" | |
26 | ||
27 | #include "lisp.h" | |
28 | #include "dispextern.h" | |
29 | #include "composite.h" | |
30 | #include "blockinput.h" | |
31 | #include "charset.h" | |
32 | #include "frame.h" | |
33 | #include "window.h" | |
34 | #include "fontset.h" | |
35 | #include "nsterm.h" | |
36 | #include "frame.h" | |
37 | #include "character.h" | |
38 | #include "font.h" | |
39 | ||
40 | #define NSFONT_TRACE 0 | |
41 | ||
42 | extern Lisp_Object Qns; | |
43 | extern Lisp_Object Qnormal, Qbold, Qitalic, Qcondensed, Qexpanded; | |
44 | static Lisp_Object Qapple, Qroman, Qmedium; | |
45 | extern Lisp_Object ns_expand_space; | |
46 | extern Lisp_Object Qappend; | |
47 | extern int ns_antialias_text, ns_use_qd_smoothing; | |
48 | extern float ns_antialias_threshold; | |
49 | extern int ns_tmp_flags; | |
50 | extern struct nsfont_info *ns_tmp_font; | |
51 | ||
52 | /* font glyph and metrics caching functions, implemented at end */ | |
53 | static void ns_uni_to_glyphs (struct nsfont_info *font_info, | |
54 | unsigned char block); | |
55 | static void ns_glyph_metrics (struct nsfont_info *font_info, | |
56 | unsigned char block); | |
57 | ||
58 | ||
59 | /* ========================================================================== | |
60 | ||
61 | Utilities | |
62 | ||
63 | ========================================================================== */ | |
64 | ||
65 | ||
66 | /* Replace spaces w/another character so emacs core font parsing routines | |
67 | aren't thrown off. */ | |
68 | static void | |
69 | nsfont_escape_name (char *name) | |
70 | { | |
71 | int i =0, len =strlen (name); | |
72 | for ( ; i<len; i++) | |
73 | if (name[i] == ' ') | |
74 | name[i] = '_'; | |
75 | } | |
76 | ||
77 | ||
78 | /* Reconstruct spaces in a font family name passed through emacs. */ | |
79 | static void | |
80 | nsfont_unescape_name (char *name) | |
81 | { | |
82 | int i =0, len =strlen (name); | |
83 | for ( ; i<len; i++) | |
84 | if (name[i] == '_') | |
85 | name[i] = ' '; | |
86 | } | |
87 | ||
88 | ||
89 | /* Extract family name from a font spec. */ | |
90 | static NSString * | |
91 | nsfont_get_family (Lisp_Object font_spec) | |
92 | { | |
93 | Lisp_Object tem = AREF (font_spec, FONT_FAMILY_INDEX); | |
94 | if (NILP (tem)) | |
95 | return nil; | |
96 | else | |
97 | { | |
98 | char *tmp = strdup (SDATA (SYMBOL_NAME (tem))); | |
99 | NSString *family; | |
100 | nsfont_unescape_name (tmp); | |
101 | /* PENDING: this seems to be needed only for font names that are | |
102 | hard-coded into emacs, like 'helvetica' for splash screen */ | |
103 | if (tmp) | |
104 | tmp[0] = toupper (tmp[0]); | |
105 | family = [NSString stringWithUTF8String: tmp]; | |
106 | free (tmp); | |
107 | return family; | |
108 | } | |
109 | } | |
110 | ||
111 | ||
112 | /* Converts FONT_WEIGHT, FONT_SLANT, FONT_WIDTH to NSFont traits. */ | |
113 | /* PENDING (20080601): The font backend's strategy for handling font | |
114 | styles continues to evolve. When/if this stabilizes, we | |
115 | can change the code here to be more sophisticated and accurate. | |
116 | For now, we rely on "normal/plain" style being numeric 100. */ | |
117 | #define STYLE_REF 100 | |
118 | static unsigned int | |
119 | nsfont_spec_to_traits (Lisp_Object font_spec) | |
120 | { | |
121 | unsigned int traits = 0; | |
122 | int n; | |
123 | ||
124 | n = FONT_WEIGHT_NUMERIC (font_spec); | |
125 | if (n != -1) | |
126 | traits |= (n > STYLE_REF) ? NSBoldFontMask : NSUnboldFontMask; | |
127 | ||
128 | n = FONT_SLANT_NUMERIC (font_spec); | |
129 | if (n != -1) | |
130 | traits |= (n > STYLE_REF) ? NSItalicFontMask : NSUnitalicFontMask; | |
131 | ||
132 | n = FONT_WIDTH_NUMERIC (font_spec); | |
133 | if (n > -1) | |
134 | { | |
135 | if (n < STYLE_REF - 10) | |
136 | traits |= NSCondensedFontMask; | |
137 | else if (n > STYLE_REF + 10) | |
138 | traits |= NSExpandedFontMask; | |
139 | } | |
140 | ||
141 | /*fprintf (stderr, " returning traits = %u\n", traits); */ | |
142 | return traits; | |
143 | } | |
144 | ||
145 | ||
146 | /* Converts NSArray of PS name, non-family part, weight, and traits to a | |
147 | font backend font-entity. */ | |
148 | static Lisp_Object | |
149 | nsfont_fmember_to_entity (NSString *family, NSArray *famMember) | |
150 | { | |
151 | Lisp_Object font_entity = font_make_entity (); | |
152 | unsigned int traits = [[famMember objectAtIndex: 3] unsignedIntValue]; | |
153 | /* NSString *psName = [famMember objectAtIndex: 0]; */ | |
154 | NSMutableString *suffix = [[famMember objectAtIndex: 1] mutableCopy]; | |
155 | char *escapedFamily = [family UTF8String]; | |
156 | ||
157 | nsfont_escape_name (escapedFamily); | |
158 | [suffix replaceOccurrencesOfString: @" " withString: @"" options: 0 | |
159 | range: NSMakeRange (0, [suffix length])]; | |
160 | ||
161 | ASET (font_entity, FONT_TYPE_INDEX, Qns); | |
162 | ASET (font_entity, FONT_FOUNDRY_INDEX, Qapple); | |
163 | ASET (font_entity, FONT_FAMILY_INDEX, intern (escapedFamily)); | |
164 | ASET (font_entity, FONT_ADSTYLE_INDEX, intern ([suffix UTF8String])); | |
165 | ASET (font_entity, FONT_REGISTRY_INDEX, Qiso10646_1); | |
166 | ||
167 | FONT_SET_STYLE (font_entity, FONT_WEIGHT_INDEX, | |
168 | traits & NSBoldFontMask ? Qbold : Qmedium); | |
169 | FONT_SET_STYLE (font_entity, FONT_SLANT_INDEX, | |
170 | traits & NSItalicFontMask ? Qitalic : Qnormal); /*XXX: should be Qroman */ | |
171 | FONT_SET_STYLE (font_entity, FONT_WIDTH_INDEX, | |
172 | traits & NSCondensedFontMask ? Qcondensed : | |
173 | traits & NSExpandedFontMask ? Qexpanded : Qnormal); | |
174 | ||
175 | ASET (font_entity, FONT_SIZE_INDEX, make_number (0)); | |
176 | ASET (font_entity, FONT_EXTRA_INDEX, Qnil); | |
177 | ASET (font_entity, FONT_OBJLIST_INDEX, Qnil); | |
178 | ||
179 | if (NSFONT_TRACE) | |
180 | { | |
181 | fprintf (stderr, "created font_entity:\n "); | |
182 | debug_print (font_entity); | |
183 | } | |
184 | ||
185 | [suffix release]; | |
186 | return font_entity; | |
187 | } | |
188 | ||
189 | ||
190 | /* Computes Hamming distance btwn two "vectors" of 0's and 1's. */ | |
191 | static int | |
192 | nsfont_trait_distance (unsigned int traits1, unsigned int traits2) | |
193 | { | |
194 | int i, d =0; | |
195 | for (i =0; i<sizeof (unsigned int)*8; i++) | |
196 | { | |
197 | d += (traits1 & 0x1) ^ (traits2 & 0x1); | |
198 | traits1 >> 1; | |
199 | traits2 >> 1; | |
200 | } | |
201 | return d; | |
202 | } | |
203 | ||
204 | ||
205 | /* Default font entity based on Monaco. */ | |
206 | static Lisp_Object | |
207 | nsfont_fallback_entity () | |
208 | { | |
209 | NSString *family = [[NSFont userFixedPitchFontOfSize: 0] familyName]; | |
210 | NSArray *famMemberSpec = [NSArray arrayWithObjects: family, @"", | |
211 | [NSNumber numberWithUnsignedInt: 5], | |
212 | [NSNumber numberWithUnsignedInt: 0], nil]; | |
213 | return nsfont_fmember_to_entity (family, famMemberSpec); | |
214 | } | |
215 | ||
216 | ||
217 | /* ========================================================================== | |
218 | ||
219 | Font driver implementation | |
220 | ||
221 | ========================================================================== */ | |
222 | ||
223 | static Lisp_Object nsfont_get_cache (FRAME_PTR frame); | |
224 | static Lisp_Object nsfont_list (Lisp_Object frame, Lisp_Object font_spec); | |
225 | static Lisp_Object nsfont_match (Lisp_Object frame, Lisp_Object font_spec); | |
226 | static Lisp_Object nsfont_list_family (Lisp_Object frame); | |
227 | static Lisp_Object nsfont_open (FRAME_PTR f, Lisp_Object font_entity, | |
228 | int pixel_size); | |
229 | static void nsfont_close (FRAME_PTR f, struct font *font); | |
230 | static int nsfont_has_char (Lisp_Object entity, int c); | |
231 | static unsigned int nsfont_encode_char (struct font *font, int c); | |
232 | static int nsfont_text_extents (struct font *font, unsigned int *code, | |
233 | int nglyphs, struct font_metrics *metrics); | |
234 | static int nsfont_draw (struct glyph_string *s, int from, int to, int x, int y, | |
235 | int with_background); | |
236 | ||
237 | struct font_driver nsfont_driver = | |
238 | { | |
239 | (Lisp_Object) NULL, /* Qns */ | |
240 | 1, /* case sensitive */ | |
241 | nsfont_get_cache, | |
242 | nsfont_list, | |
243 | nsfont_match, | |
244 | nsfont_list_family, | |
245 | NULL, /*free_entity */ | |
246 | nsfont_open, | |
247 | nsfont_close, | |
248 | NULL, /* prepare_face */ | |
249 | NULL, /* done_face */ | |
250 | nsfont_has_char, | |
251 | nsfont_encode_char, | |
252 | nsfont_text_extents, | |
253 | nsfont_draw, | |
254 | /* excluded: get_bitmap, free_bitmap, get_outline, free_outline, | |
255 | anchor_point, otf_capability, otf_driver, | |
256 | start_for_frame, end_for_frame, shape */ | |
257 | }; | |
258 | ||
259 | ||
260 | /* Return a cache of font-entities on FRAME. The cache must be a | |
261 | cons whose cdr part is the actual cache area. */ | |
262 | static Lisp_Object | |
263 | nsfont_get_cache (FRAME_PTR frame) | |
264 | { | |
265 | Display_Info *dpyinfo = FRAME_NS_DISPLAY_INFO (frame); | |
266 | return (dpyinfo->name_list_element); | |
267 | } | |
268 | ||
269 | ||
270 | /* List fonts exactly matching with FONT_SPEC on FRAME. The value | |
271 | is a vector of font-entities. This is the sole API that | |
272 | allocates font-entities. */ | |
273 | static Lisp_Object | |
274 | nsfont_list (Lisp_Object frame, Lisp_Object font_spec) | |
275 | { | |
276 | Lisp_Object list = Qnil; | |
277 | Lisp_Object tem; | |
278 | NSString *family; | |
279 | NSArray *families; | |
280 | NSEnumerator *famEnum; | |
281 | NSFontManager *fontMgr; | |
282 | unsigned int traits = nsfont_spec_to_traits (font_spec); | |
283 | ||
284 | if (NSFONT_TRACE) | |
285 | { | |
286 | fprintf (stderr, "nsfont: list for fontspec:\n "); | |
287 | debug_print (font_spec); | |
288 | } | |
289 | ||
290 | /* if has non-unicode registry, give up */ | |
291 | tem = AREF (font_spec, FONT_REGISTRY_INDEX); | |
292 | if (!EQ (tem, Qiso10646_1) && !EQ (tem, Qunicode_bmp)) | |
293 | return Qnil; | |
294 | ||
295 | fontMgr = [NSFontManager sharedFontManager]; | |
296 | ||
297 | family = nsfont_get_family (font_spec); | |
298 | ||
299 | if (family != nil) | |
300 | families = [NSArray arrayWithObject: family]; | |
301 | else | |
302 | families = [fontMgr availableFontFamilies]; | |
303 | ||
304 | for (famEnum = [families objectEnumerator]; family = [famEnum nextObject]; ) | |
305 | { | |
306 | NSEnumerator *fm; | |
307 | NSArray *fmember, *firstMember = nil; | |
308 | unsigned int mtraits; | |
309 | BOOL foundItal = NO || (traits & NSUnitalicFontMask); | |
310 | NSArray *famMembers = [fontMgr availableMembersOfFontFamily: family]; | |
311 | #ifdef NS_IMPL_COCOA | |
312 | /* LastResort is special: not a family but a font name only */ | |
313 | if ([@"LastResort" isEqualToString: family] && [famMembers count] == 0) | |
314 | { | |
315 | famMembers = [NSArray arrayWithObject: [NSArray arrayWithObjects: | |
316 | @"LastResort", @"", [NSNumber numberWithUnsignedInt: 5], | |
317 | [NSNumber numberWithUnsignedInt: 0], nil]]; | |
318 | } | |
319 | #endif | |
320 | ||
321 | /* fmember = [postscriptName style weight traits] */ | |
322 | fm = [famMembers objectEnumerator]; | |
323 | while (fmember = [fm nextObject]) | |
324 | { | |
325 | mtraits = [[fmember objectAtIndex: 3] unsignedIntValue]; | |
326 | if ((mtraits & traits) == traits) | |
327 | { | |
328 | list = Fcons (nsfont_fmember_to_entity (family, fmember), list); | |
329 | if (mtraits & NSItalicFontMask) | |
330 | foundItal = YES; | |
331 | if (firstMember == nil) | |
332 | firstMember = fmember; | |
333 | } | |
334 | } | |
335 | if (foundItal == NO && firstMember != nil) | |
336 | { | |
337 | /* no italic member found; add a synthesized one */ | |
338 | NSMutableArray *smember = [firstMember mutableCopy]; | |
339 | [smember replaceObjectAtIndex: 1 withObject: @"synthItal" ]; | |
340 | mtraits = [[fmember objectAtIndex: 3] unsignedIntValue]; | |
341 | mtraits |= NSItalicFontMask; | |
342 | [smember replaceObjectAtIndex: 3 | |
343 | withObject: [NSNumber numberWithUnsignedInt: mtraits]]; | |
344 | /*NSLog (@"-- adding synthItal member: %@", smember); */ | |
345 | list = Fcons (nsfont_fmember_to_entity (family, smember), list); | |
346 | [smember release]; | |
347 | } | |
348 | } | |
349 | ||
350 | if (NSFONT_TRACE) | |
351 | fprintf (stderr, " Returning %d entities.\n", XINT (Flength (list))); | |
352 | ||
353 | return (NILP (list) ? Qnil : Fvconcat (1, &list));/* Qnil was null_vector */ | |
354 | } | |
355 | ||
356 | ||
357 | /* Return a font entity most closely maching with FONT_SPEC on | |
358 | FRAME. The closeness is determined by the font backend, thus | |
359 | `face-font-selection-order' is ignored here. */ | |
360 | static Lisp_Object | |
361 | nsfont_match (Lisp_Object frame, Lisp_Object font_spec) | |
362 | { | |
363 | long traits = nsfont_spec_to_traits (font_spec); | |
364 | NSFontManager *fontMgr = [NSFontManager sharedFontManager]; | |
365 | NSString *family; | |
366 | Lisp_Object tem; | |
367 | ||
368 | if (NSFONT_TRACE) | |
369 | { | |
370 | fprintf (stderr, "nsfont: match for fontspec:\n "); | |
371 | debug_print (font_spec); | |
372 | } | |
373 | ||
374 | /* if has non-unicode registry, just return fallback */ | |
375 | #if 0 | |
376 | tem = AREF (font_spec, FONT_ADSTYLE_INDEX); | |
377 | if (!NILP (tem)) | |
378 | fprintf (stderr, "adstyle: '%s'\n", SDATA (tem)); | |
379 | #endif | |
380 | tem = AREF (font_spec, FONT_REGISTRY_INDEX); | |
381 | if (!EQ (tem, Qiso10646_1) && !EQ (tem, Qunicode_bmp)) | |
382 | return nsfont_fallback_entity (); | |
383 | ||
384 | family = nsfont_get_family (font_spec); | |
385 | ||
386 | if (family != nil) | |
387 | { | |
388 | /* try to find close font in family */ | |
389 | NSArray *famMembers = [fontMgr availableMembersOfFontFamily: family]; | |
390 | NSEnumerator *fm = [famMembers objectEnumerator]; | |
391 | NSArray *fmember; | |
392 | int minDist = sizeof (unsigned int) * 8 + 1; | |
393 | int bestMatchIdx = -1; | |
394 | int i; | |
395 | ||
396 | for (i =0; fmember = [fm nextObject]; i++) | |
397 | { | |
398 | unsigned int mtraits = [[fmember objectAtIndex: 3] unsignedIntValue]; | |
399 | int dist = nsfont_trait_distance ((mtraits & traits), traits); | |
400 | if (dist < minDist) | |
401 | { | |
402 | bestMatchIdx = i; | |
403 | minDist = dist; | |
404 | } | |
405 | } | |
406 | if (bestMatchIdx != -1) | |
407 | return nsfont_fmember_to_entity | |
408 | (family, [famMembers objectAtIndex: bestMatchIdx]); | |
409 | } | |
410 | ||
411 | /* no family that had members was given; find any font matching traits */ | |
412 | { | |
413 | NSArray *fontNames = [fontMgr availableFontNamesWithTraits: traits]; | |
414 | if (fontNames && [fontNames count] > 0) | |
415 | { | |
416 | NSString *fontName = [fontNames objectAtIndex: 0]; | |
417 | /*PENDING: is there a more efficient way to get family name? */ | |
418 | NSFont *font = [NSFont fontWithName: fontName size: 0]; | |
419 | if (font != nil) | |
420 | { | |
421 | /* now need to get suffix part of name.. */ | |
422 | NSString *family = [font familyName]; | |
423 | NSEnumerator *fm = [[fontMgr availableMembersOfFontFamily: family] | |
424 | objectEnumerator]; | |
425 | NSArray *fmember; | |
426 | while (fmember = [fm nextObject]) | |
427 | { | |
428 | unsigned int mtraits = | |
429 | [[fmember objectAtIndex: 3] unsignedIntValue]; | |
430 | if (mtraits & traits == traits) | |
431 | return nsfont_fmember_to_entity (family, fmember); | |
432 | } | |
433 | } | |
434 | } | |
435 | } | |
436 | ||
437 | /* if we get here, return the fallback */ | |
438 | if (NSFONT_TRACE) | |
439 | fprintf (stderr, " *** returning fallback\n"); | |
440 | ||
441 | return nsfont_fallback_entity (); | |
442 | } | |
443 | ||
444 | ||
445 | /* List available families. The value is a list of family names | |
446 | (symbols). */ | |
447 | static Lisp_Object | |
448 | nsfont_list_family (Lisp_Object frame) | |
449 | { | |
450 | Lisp_Object list = Qnil; | |
451 | NSEnumerator *families = | |
452 | [[[NSFontManager sharedFontManager] availableFontFamilies] | |
453 | objectEnumerator]; | |
454 | NSString *family; | |
455 | while (family = [families nextObject]) | |
456 | list = Fcons (intern ([family UTF8String]), list); | |
457 | /*PENDING: escape the name? */ | |
458 | ||
459 | if (NSFONT_TRACE) | |
460 | fprintf (stderr, "nsfont: list families returning %d entries\n", | |
461 | XINT (Flength (list))); | |
462 | ||
463 | return list; | |
464 | } | |
465 | ||
466 | ||
467 | /* utility: get width of a char c in screen font sfont */ | |
468 | static float | |
469 | nsfont_char_width (NSFont *sfont, int c) | |
470 | { | |
471 | float w; | |
472 | NSString *cstr = [NSString stringWithFormat: @"%c", c]; | |
473 | #ifdef NS_IMPL_COCOA | |
474 | NSGlyph glyph = [sfont glyphWithName: cstr]; | |
475 | if (glyph) | |
476 | { | |
477 | float w = [sfont advancementForGlyph: glyph].width; | |
478 | if (w >= 1.5) | |
479 | return w; | |
480 | } | |
481 | #endif | |
482 | w = [sfont widthOfString: cstr]; | |
483 | return max (w, 2.0); | |
484 | } | |
485 | ||
486 | ||
487 | /* Open a font specified by FONT_ENTITY on frame F. If the font is | |
488 | scalable, open it with PIXEL_SIZE. */ | |
489 | static Lisp_Object | |
490 | nsfont_open (FRAME_PTR f, Lisp_Object font_entity, int pixel_size) | |
491 | { | |
492 | BOOL synthItal; | |
493 | struct nsfont_info *font_info; | |
494 | struct font *font; | |
495 | unsigned int traits = nsfont_spec_to_traits (font_entity); | |
496 | NSFontManager *fontMgr = [NSFontManager sharedFontManager]; | |
497 | NSString *family; | |
498 | NSFont *nsfont, *sfont; | |
499 | Lisp_Object tem; | |
500 | NSRect brect; | |
501 | Lisp_Object font_object; | |
502 | int i; | |
503 | int fixLeopardBug; | |
504 | #if 0 | |
505 | static NSMutableDictionary *fontCache = nil; | |
506 | ||
507 | /* 2008/03/08: The same font may end up being requested for different | |
508 | entities, due to small differences in numeric values or other issues, | |
509 | or for different copies of the same entity. Therefore we cache to | |
510 | avoid creating multiple struct font objects (with metrics cache, etc.) | |
511 | for the same NSFont object. | |
512 | 2008/06/01: This is still an issue, but after font backend refactoring | |
513 | caching will be more difficult, needs to be reworked before enabling. */ | |
514 | if (fontCache == nil) | |
515 | fontCache = [[NSMutableDictionary alloc] init]; | |
516 | #endif | |
517 | ||
518 | font_object = font_make_object (VECSIZE (struct nsfont_info), font_entity, | |
519 | pixel_size); | |
520 | font_info = (struct nsfont_info *) XFONT_OBJECT (font_object); | |
521 | font = (struct font *)font_info; | |
522 | if (!font) | |
523 | return NULL; /*PENDING: this copies w32, but causes a segfault */ | |
524 | ||
525 | if (NSFONT_TRACE) | |
526 | { | |
527 | fprintf (stderr, "nsfont: open size %d of fontentity:\n ", pixel_size); | |
528 | debug_print (font_entity); | |
529 | } | |
530 | ||
531 | if (pixel_size <= 0) | |
532 | { | |
533 | /* try to get it out of frame params */ | |
534 | Lisp_Object tem = get_frame_param (f, Qfontsize); | |
535 | pixel_size = NILP (tem) ? 0 : XFASTINT (tem); | |
536 | } | |
537 | ||
538 | tem = AREF (font_entity, FONT_ADSTYLE_INDEX); | |
539 | synthItal = !NILP (tem) && !strncmp ("synthItal", SDATA (SYMBOL_NAME (tem)), | |
540 | 9); | |
541 | family = nsfont_get_family (font_entity); | |
542 | if (NSFONT_TRACE) | |
543 | { | |
544 | fprintf (stderr, "family: '%s'\ttraits = %ld\tbold = %d\n", | |
545 | [family UTF8String], traits, traits & NSBoldFontMask); | |
546 | } | |
547 | ||
548 | /* see http://cocoadev.com/forums/comments.php?DiscussionID =74 */ | |
549 | fixLeopardBug = traits & NSBoldFontMask ? 10 : 5; | |
550 | nsfont = [fontMgr fontWithFamily: family | |
551 | traits: traits weight: fixLeopardBug | |
552 | size: pixel_size]; | |
553 | /* if didn't find, try synthetic italic */ | |
554 | if (nsfont == nil && synthItal && (traits & NSItalicFontMask)) | |
555 | { | |
556 | nsfont = [fontMgr fontWithFamily: family | |
557 | traits: traits & ~NSItalicFontMask | |
558 | weight: fixLeopardBug size: pixel_size]; | |
559 | } | |
560 | #ifdef NS_IMPL_COCOA | |
561 | /* LastResort not really a family */ | |
562 | if (nsfont == nil && [@"LastResort" isEqualToString: family]) | |
563 | { | |
564 | nsfont = [NSFont fontWithName: @"LastResort" size: pixel_size]; | |
565 | } | |
566 | #endif | |
567 | ||
568 | if (nsfont == nil) | |
569 | { | |
570 | message_with_string ("*** Warning: font in family '%s' not found", | |
571 | build_string ([family UTF8String]), 1); | |
572 | nsfont = [NSFont userFixedPitchFontOfSize: pixel_size]; | |
573 | if (!nsfont) | |
574 | { | |
575 | fprintf (stderr, "*** Emacs.app: unable to load backup font\n"); | |
576 | return NULL; | |
577 | } | |
578 | } | |
579 | ||
580 | #if 0 | |
581 | { | |
582 | NSNumber *cached = [fontCache objectForKey: nsfont]; | |
583 | if (cached != nil && !synthItal) | |
584 | { | |
585 | fprintf (stderr, "*** CACHE HIT!\n"); | |
586 | struct font_info *existing = | |
587 | (struct nsfont_info *)[cached unsignedLongValue]; | |
588 | /* ... */ | |
589 | } | |
590 | else | |
591 | { | |
592 | if (!synthItal) | |
593 | [fontCache | |
594 | setObject: [NSNumber numberWithUnsignedLong: | |
595 | (unsigned long)font_info] | |
596 | forKey: nsfont]; | |
597 | } | |
598 | } | |
599 | #endif | |
600 | ||
601 | font_info->glyphs = (unsigned short *) | |
602 | xmalloc (0x100 * sizeof (unsigned short *)); | |
603 | font_info->metrics = (struct font_metrics *) | |
604 | xmalloc (0x100 * sizeof (struct font_metrics *)); | |
605 | if (!font_info->glyphs || !font_info->metrics) | |
606 | return NULL; | |
607 | bzero (font_info->glyphs, 0x100 * sizeof (unsigned short *)); | |
608 | bzero (font_info->metrics, 0x100 * sizeof (struct font_metrics *)); | |
609 | ||
610 | ||
611 | BLOCK_INPUT; | |
612 | ||
613 | /* for metrics */ | |
614 | sfont = [nsfont screenFont]; | |
615 | if (sfont == nil) | |
616 | sfont = nsfont; | |
617 | ||
618 | /* non-metric backend font struct fields */ | |
619 | font = (struct font *) font_info; | |
620 | font->pixel_size = [sfont pointSize]; | |
621 | font->driver = &nsfont_driver; | |
622 | font->encoding_type = FONT_ENCODING_NOT_DECIDED; | |
623 | font->encoding_charset = -1; | |
624 | font->repertory_charset = -1; | |
625 | font->default_ascent = 0; | |
626 | font->vertical_centering = 0; | |
627 | font->baseline_offset = 0; | |
628 | font->relative_compose = 0; | |
629 | font->font_encoder = NULL; | |
630 | ||
631 | /*PENDING: does anything care about this? */ | |
632 | font->props[FONT_FORMAT_INDEX] = Qns; | |
633 | font->props[FONT_FILE_INDEX] = Qnil; | |
634 | ||
635 | { | |
636 | double expand, shrink, hshrink; | |
637 | float full_height, min_height, hd; | |
638 | const char *fontName = [[nsfont fontName] UTF8String]; | |
639 | int len = strlen (fontName); | |
640 | ||
641 | #ifdef NS_IMPL_GNUSTEP | |
642 | font_info->nsfont = sfont; | |
643 | #else | |
644 | font_info->nsfont = nsfont; | |
645 | #endif | |
646 | [font_info->nsfont retain]; | |
647 | ||
648 | /* set up ns_font (defined in nsgui.h) */ | |
649 | font_info->name = (char *)xmalloc (strlen (fontName)+1); | |
650 | bcopy (fontName, font_info->name, strlen (fontName)+1); | |
651 | font_info->bold = [fontMgr traitsOfFont: nsfont] & NSBoldFontMask; | |
652 | font_info->ital = | |
653 | synthItal || ([fontMgr traitsOfFont: nsfont] & NSItalicFontMask); | |
654 | ||
655 | /* Metrics etc.; some fonts return an unusually large max advance, so we | |
656 | only use it for fonts that have wide characters. */ | |
657 | font_info->width = ([sfont numberOfGlyphs] > 2000) ? | |
658 | [sfont maximumAdvancement].width : nsfont_char_width (sfont, '0'); | |
659 | ||
660 | brect = [sfont boundingRectForFont]; | |
661 | full_height = brect.size.height; | |
662 | min_height = [sfont ascender] - [sfont descender]; | |
663 | hd = full_height - min_height; | |
664 | ||
665 | if (!NUMBERP (ns_expand_space)) | |
666 | error ("No expand space defined"); | |
667 | ||
668 | /* ns_expand_space = 0.0 is use standard height; less shrink, more expand */ | |
669 | expand = XFLOATINT (ns_expand_space) + 0.5; | |
670 | ||
671 | if (expand < 0.0) | |
672 | { | |
673 | shrink = 1 + expand; | |
674 | hshrink = 1 + expand / 2.0; | |
675 | expand = 0.0; | |
676 | } | |
677 | else | |
678 | shrink = hshrink = 1.0; | |
679 | ||
680 | font_info->underpos = 2; /*[sfont underlinePosition] is often clipped out */ | |
681 | font_info->underwidth = [sfont underlineThickness]; | |
682 | font_info->size = font->pixel_size; | |
683 | font_info->voffset = lrint (hshrink * [sfont ascender] + expand * hd / 2); | |
684 | ||
685 | /* max bounds */ | |
686 | font_info->max_bounds.ascent = | |
687 | lrint (hshrink * [sfont ascender] + expand * hd/2); | |
688 | font_info->max_bounds.descent = | |
689 | -lrint (hshrink* [sfont descender] - expand*hd/2); | |
690 | font_info->height = | |
691 | font_info->max_bounds.ascent + font_info->max_bounds.descent; | |
692 | font_info->max_bounds.width = lrint (font_info->width); | |
693 | font_info->max_bounds.lbearing = lrint (brect.origin.x); | |
694 | font_info->max_bounds.rbearing = | |
695 | lrint (brect.size.width - font_info->width); | |
696 | /*font_info->width + (font_info->ital ? 0.2 * font_info->height : 0); */ | |
697 | ||
698 | #ifdef NS_IMPL_COCOA | |
699 | /* set up synthItal and the CG font */ | |
700 | font_info->synthItal = synthItal; | |
701 | { | |
702 | ATSFontRef atsFont = ATSFontFindFromPostScriptName | |
703 | ((CFStringRef)[nsfont fontName], kATSOptionFlagsDefault); | |
704 | ||
705 | if (atsFont == kATSFontRefUnspecified) | |
706 | { | |
707 | /* see if we can get it by dropping italic (then synthesizing) */ | |
708 | atsFont = ATSFontFindFromPostScriptName ((CFStringRef) | |
709 | [[fontMgr convertFont: nsfont toNotHaveTrait: NSItalicFontMask] | |
710 | fontName], kATSOptionFlagsDefault); | |
711 | if (atsFont != kATSFontRefUnspecified) | |
712 | font_info->synthItal = YES; | |
713 | else | |
714 | { | |
715 | /* last resort fallback */ | |
716 | atsFont = ATSFontFindFromPostScriptName | |
717 | ((CFStringRef)@"Monaco", kATSOptionFlagsDefault); | |
718 | } | |
719 | } | |
720 | font_info->cgfont = CGFontCreateWithPlatformFont ((void*)&atsFont); | |
721 | } | |
722 | #endif | |
723 | ||
724 | /* set up metrics portion of font struct */ | |
725 | font->ascent = [sfont ascender]; | |
726 | font->descent = -[sfont descender]; | |
727 | font->min_width = [sfont widthOfString: @"|"]; /* PENDING */ | |
728 | font->space_width = lrint (nsfont_char_width (sfont, ' ')); | |
729 | font->average_width = lrint (font_info->width); | |
730 | font->max_width = lrint (font_info->max_bounds.width); | |
731 | font->height = lrint (font_info->height); | |
732 | font->underline_position = lrint (font_info->underpos); | |
733 | font->underline_thickness = lrint (font_info->underwidth); | |
734 | ||
735 | font->props[FONT_NAME_INDEX] = Ffont_xlfd_name (font_object, Qnil); | |
736 | font->props[FONT_FULLNAME_INDEX] = | |
737 | make_unibyte_string (font_info->name, strlen (font_info->name)); | |
738 | } | |
739 | UNBLOCK_INPUT; | |
740 | ||
741 | return font_object; | |
742 | } | |
743 | ||
744 | ||
745 | /* Close FONT on frame F. */ | |
746 | static void | |
747 | nsfont_close (FRAME_PTR f, struct font *font) | |
748 | { | |
749 | struct nsfont_info *font_info = (struct nsfont_info *)font; | |
750 | int i; | |
751 | ||
752 | /* PENDING: this occurs apparently due to same failure to detect same font | |
753 | that causes need for cache in nsfont_open () | |
754 | (came after unicode-2 -> trunk) */ | |
755 | if (!font_info) | |
756 | return; | |
757 | ||
758 | for (i =0; i<0x100; i++) | |
759 | { | |
760 | if (font_info->glyphs[i]) | |
761 | xfree (font_info->glyphs[i]); | |
762 | if (font_info->metrics[i]) | |
763 | xfree (font_info->metrics[i]); | |
764 | } | |
765 | [font_info->nsfont release]; | |
766 | #ifdef NS_IMPL_COCOA | |
767 | CGFontRelease (font_info->cgfont); | |
768 | #endif | |
769 | xfree (font_info->name); | |
770 | xfree (font_info); | |
771 | } | |
772 | ||
773 | ||
774 | /* If FONT_ENTITY has a glyph for character C (Unicode code point), | |
775 | return 1. If not, return 0. If a font must be opened to check | |
776 | it, return -1. */ | |
777 | static int | |
778 | nsfont_has_char (Lisp_Object entity, int c) | |
779 | { | |
780 | return -1; | |
781 | } | |
782 | ||
783 | ||
784 | /* Return a glyph code of FONT for character C (Unicode code point). | |
785 | If FONT doesn't have such a glyph, return FONT_INVALID_CODE. */ | |
786 | static unsigned int | |
787 | nsfont_encode_char (struct font *font, int c) | |
788 | { | |
789 | struct nsfont_info *font_info = (struct nsfont_info *)font; | |
790 | unsigned char high = (c & 0xff00) >> 8, low = c & 0x00ff; | |
791 | unsigned short g; | |
792 | ||
793 | if (c > 0xFFFF) | |
794 | return FONT_INVALID_CODE; | |
795 | ||
796 | /* did we already cache this block? */ | |
797 | if (!font_info->glyphs[high]) | |
798 | ns_uni_to_glyphs (font_info, high); | |
799 | ||
800 | g = font_info->glyphs[high][low]; | |
801 | /*fprintf (stderr, "mapping char %d -> %d\n", c, g); */ | |
802 | return g == 0xFFFF ? FONT_INVALID_CODE : g; | |
803 | } | |
804 | ||
805 | ||
806 | /* Perform the size computation of glyphs of FONT and fill in members | |
807 | of METRICS. The glyphs are specified by their glyph codes in | |
808 | CODE (length NGLYPHS). */ | |
809 | static int | |
810 | nsfont_text_extents (struct font *font, unsigned int *code, int nglyphs, | |
811 | struct font_metrics *metrics) | |
812 | { | |
813 | struct nsfont_info *font_info = (struct nsfont_info *)font; | |
814 | struct font_metrics *pcm; | |
815 | unsigned char high, low; | |
816 | int totalWidth = 0; | |
817 | int i; | |
818 | ||
819 | bzero (metrics, sizeof (struct font_metrics)); | |
820 | ||
821 | for (i =0; i<nglyphs; i++) | |
822 | { | |
823 | /* get metrics for this glyph, filling cache if need be */ | |
824 | /* PENDING: get metrics for whole string from an NSLayoutManager | |
825 | (if not too slow) */ | |
826 | high = (code[i] & 0xFF00) >> 8; | |
827 | low = code[i] & 0x00FF; | |
828 | if (!font_info->metrics[high]) | |
829 | ns_glyph_metrics (font_info, high); | |
830 | pcm = &(font_info->metrics[high][low]); | |
831 | ||
832 | if (metrics->lbearing > totalWidth + pcm->lbearing) | |
833 | metrics->lbearing = totalWidth + pcm->lbearing; | |
834 | if (metrics->rbearing < totalWidth + pcm->rbearing) | |
835 | metrics->rbearing = totalWidth + pcm->rbearing; | |
836 | if (metrics->ascent < pcm->ascent) | |
837 | metrics->ascent = pcm->ascent; | |
838 | if (metrics->descent < pcm->descent) | |
839 | metrics->descent = pcm->descent; | |
840 | ||
841 | totalWidth += pcm->width; | |
842 | } | |
843 | ||
844 | metrics->width = totalWidth; | |
845 | ||
846 | return totalWidth; /* not specified in doc, but xfont.c does it */ | |
847 | } | |
848 | ||
849 | ||
850 | /* Draw glyphs between FROM and TO of S->char2b at (X Y) pixel | |
851 | position of frame F with S->FACE and S->GC. If WITH_BACKGROUND | |
852 | is nonzero, fill the background in advance. It is assured that | |
853 | WITH_BACKGROUND is zero when (FROM > 0 || TO < S->nchars). */ | |
854 | static int | |
855 | nsfont_draw (struct glyph_string *s, int from, int to, int x, int y, | |
856 | int with_background) | |
857 | /* NOTE: focus and clip must be set | |
858 | also, currently assumed (true in nsterm.m call) from ==0, to ==nchars */ | |
859 | { | |
860 | static char cbuf[1024]; | |
861 | char *c = cbuf; | |
862 | #ifdef NS_IMPL_GNUSTEP | |
863 | static float advances[1024]; | |
864 | float *adv = advances; | |
865 | #else | |
866 | static CGSize advances[1024]; | |
867 | CGSize *adv = advances; | |
868 | #endif | |
869 | struct face *face; | |
870 | NSRect r; | |
871 | struct nsfont_info *font = ns_tmp_font; | |
872 | NSColor *col, *bgCol; | |
873 | unsigned short *t = s->char2b; | |
874 | int i, len; | |
875 | ||
876 | /* Select face based on input flags */ | |
877 | switch (ns_tmp_flags) | |
878 | { | |
879 | case NS_DUMPGLYPH_CURSOR: | |
880 | face = s->face; | |
881 | break; | |
882 | case NS_DUMPGLYPH_MOUSEFACE: | |
883 | face = FACE_FROM_ID (s->f, | |
884 | FRAME_NS_DISPLAY_INFO (s->f)->mouse_face_face_id); | |
885 | if (!face) | |
886 | face = FACE_FROM_ID (s->f, MOUSE_FACE_ID); | |
887 | break; | |
888 | default: | |
889 | face = s->face; | |
890 | } | |
891 | ||
892 | r.origin.x = s->x; | |
893 | if (s->face->box != FACE_NO_BOX && s->first_glyph->left_box_line_p) | |
894 | r.origin.x += abs (s->face->box_line_width); | |
895 | ||
896 | r.origin.y = s->y; | |
897 | r.size.height = FONT_HEIGHT (font); | |
898 | ||
899 | /* Convert UTF-16 (?) to UTF-8 and determine advances. Note if we just ask | |
900 | NS to render the string, it will come out differently from the individual | |
901 | character widths added up because of layout processing. */ | |
902 | { | |
903 | XCharStruct *cs; | |
904 | int cwidth, twidth = 0; | |
905 | int hi, lo; | |
906 | char isComposite = 0; /* s->first_glyph->type == COMPOSITE_GLYPH; */ | |
907 | /* PENDING: composition: no vertical displacement is considered. */ | |
908 | t+= s->gidx; /* advance into composition */ | |
909 | for (i =0; i<s->nchars - s->gidx; i++, t++) | |
910 | { | |
911 | hi = (*t & 0xFF00) >> 8; | |
912 | lo = *t & 0x00FF; | |
913 | if (isComposite) | |
914 | { | |
915 | cwidth = s->cmp->offsets[s->gidx++ * 2] - twidth; | |
916 | } | |
917 | else | |
918 | { | |
919 | if (!font->metrics[hi]) /*PENDING: why/how can we need this now? */ | |
920 | ns_glyph_metrics (font, hi); | |
921 | cwidth = font->metrics[hi][lo].width; | |
922 | } | |
923 | twidth += cwidth; | |
924 | #ifdef NS_IMPL_GNUSTEP | |
925 | *adv++ = cwidth; | |
926 | CHAR_STRING_ADVANCE (*t, c); /* this converts the char to UTF-8 */ | |
927 | #else | |
928 | (*adv++).width = cwidth; | |
929 | #endif | |
930 | } | |
931 | len = adv - advances; | |
932 | r.size.width = twidth; | |
933 | *c = 0; | |
934 | } | |
935 | ||
936 | /* fill background if requested */ | |
937 | if (with_background) | |
938 | { | |
939 | NSRect br = r; | |
940 | int fibw = FRAME_INTERNAL_BORDER_WIDTH (s->f); | |
941 | int mbox_line_width = max (s->face->box_line_width, 0); | |
942 | ||
943 | if (s->row->full_width_p) | |
944 | { | |
945 | if (br.origin.x <= fibw + 1 + mbox_line_width) | |
946 | { | |
947 | br.size.width += br.origin.x - mbox_line_width; | |
948 | br.origin.x = mbox_line_width; | |
949 | } | |
950 | if (FRAME_PIXEL_WIDTH (s->f) - (br.origin.x + br.size.width) | |
951 | <= fibw+1) | |
952 | br.size.width += fibw; | |
953 | } | |
954 | if (s->face->box == FACE_NO_BOX) | |
955 | { | |
956 | /* expand unboxed top row over internal border */ | |
957 | if (br.origin.y <= fibw + 1 + mbox_line_width) | |
958 | { | |
959 | br.size.height += br.origin.y; | |
960 | br.origin.y = 0; | |
961 | } | |
962 | } | |
963 | else | |
964 | { | |
965 | int correction = abs (s->face->box_line_width)+1; | |
966 | br.origin.y += correction; | |
967 | br.size.height -= 2*correction; | |
968 | br.origin.x += correction; | |
969 | br.size.width -= 2*correction; | |
970 | } | |
971 | ||
972 | if (!s->face->stipple) | |
973 | [(NS_FACE_BACKGROUND (face) != nil | |
974 | ? ns_lookup_indexed_color (NS_FACE_BACKGROUND (face), s->f) | |
975 | : FRAME_BACKGROUND_COLOR (s->f)) set]; | |
976 | else | |
977 | { | |
978 | struct ns_display_info *dpyinfo = FRAME_NS_DISPLAY_INFO (s->f); | |
979 | [[dpyinfo->bitmaps[face->stipple-1].img stippleMask] set]; | |
980 | } | |
981 | NSRectFill (br); | |
982 | } | |
983 | ||
984 | ||
985 | /* set up for character rendering */ | |
986 | r.origin.y += font->voffset + (s->height - font->height)/2; | |
987 | ||
988 | col = (NS_FACE_FOREGROUND (face) != nil | |
989 | ? ns_lookup_indexed_color (NS_FACE_FOREGROUND (face), s->f) | |
990 | : FRAME_FOREGROUND_COLOR (s->f)); | |
991 | /*PENDING: find another way to pass this */ | |
992 | bgCol = (ns_tmp_flags != NS_DUMPGLYPH_FOREGROUND ? nil | |
993 | : (NS_FACE_BACKGROUND (face) != nil | |
994 | ? ns_lookup_indexed_color (NS_FACE_BACKGROUND (face), s->f) | |
995 | : FRAME_BACKGROUND_COLOR (s->f))); | |
996 | ||
997 | /* render under GNUstep using DPS */ | |
998 | #ifdef NS_IMPL_GNUSTEP | |
999 | { | |
1000 | NSGraphicsContext *context = GSCurrentContext (); | |
1001 | ||
1002 | DPSgsave (context); | |
1003 | [font->nsfont set]; | |
1004 | ||
1005 | /* do erase if "foreground" mode */ | |
1006 | if (bgCol != nil) | |
1007 | { | |
1008 | [bgCol set]; | |
1009 | DPSmoveto (context, r.origin.x, r.origin.y); | |
1010 | /*[context GSSetTextDrawingMode: GSTextFillStroke]; /// not implemented yet */ | |
1011 | DPSxshow (context, cbuf, advances, len); | |
1012 | DPSstroke (context); | |
1013 | [col set]; | |
1014 | /*[context GSSetTextDrawingMode: GSTextFill]; /// not implemented yet */ | |
1015 | } | |
1016 | ||
1017 | /* do underline */ | |
1018 | if (face->underline_p) | |
1019 | { | |
1020 | if (face->underline_color != nil) | |
1021 | [ns_lookup_indexed_color (face->underline_color, s->f) set]; | |
1022 | else | |
1023 | [col set]; | |
1024 | DPSmoveto (context, r.origin.x, r.origin.y + font->underpos); | |
1025 | DPSlineto (context, r.origin.x+r.size.width, r.origin.y+font->underpos); | |
1026 | if (face->underline_color != nil) | |
1027 | [col set]; | |
1028 | } | |
1029 | else | |
1030 | [col set]; | |
1031 | ||
1032 | /* draw with DPSxshow () */ | |
1033 | DPSmoveto (context, r.origin.x, r.origin.y); | |
1034 | DPSxshow (context, cbuf, advances, len); | |
1035 | DPSstroke (context); | |
1036 | ||
1037 | DPSgrestore (context); | |
1038 | return to-from; | |
1039 | } | |
1040 | ||
1041 | #else /* NS_IMPL_COCOA */ | |
1042 | { | |
1043 | CGContextRef gcontext = | |
1044 | [[NSGraphicsContext currentContext] graphicsPort]; | |
1045 | static CGAffineTransform fliptf; | |
1046 | static BOOL firstTime = YES; | |
1047 | ||
1048 | if (firstTime) | |
1049 | { | |
1050 | firstTime = NO; | |
1051 | fliptf = CGAffineTransformMakeScale (1.0, -1.0); | |
1052 | } | |
1053 | ||
1054 | CGContextSaveGState (gcontext); | |
1055 | ||
1056 | fliptf.c = font->synthItal ? Fix2X (kATSItalicQDSkew) : 0.0; | |
1057 | ||
1058 | CGContextSetFont (gcontext, font->cgfont); | |
1059 | CGContextSetFontSize (gcontext, font->size); | |
1060 | if (ns_antialias_text == NO || font->size <= ns_antialias_threshold) | |
1061 | CGContextSetShouldAntialias (gcontext, 0); | |
1062 | else | |
1063 | CGContextSetShouldAntialias (gcontext, 1); | |
1064 | if (ns_use_qd_smoothing) | |
1065 | CGContextSetFontRenderingMode (gcontext, 2); /* 0 is Cocoa, 2 is QD */ | |
1066 | ||
1067 | CGContextSetTextMatrix (gcontext, fliptf); | |
1068 | ||
1069 | if (bgCol != nil) | |
1070 | { | |
1071 | /* foreground drawing; erase first to avoid overstrike */ | |
1072 | [bgCol set]; | |
1073 | CGContextSetTextDrawingMode (gcontext, kCGTextFillStroke); | |
1074 | CGContextSetTextPosition (gcontext, r.origin.x, r.origin.y); | |
1075 | CGContextShowGlyphsWithAdvances (gcontext, s->char2b, advances, len); | |
1076 | CGContextSetTextDrawingMode (gcontext, kCGTextFill); | |
1077 | } | |
1078 | ||
1079 | if (face->underline_p) | |
1080 | { | |
1081 | if (face->underline_color != nil) | |
1082 | [ns_lookup_indexed_color (face->underline_color, s->f) set]; | |
1083 | else | |
1084 | [col set]; | |
1085 | CGContextBeginPath (gcontext); | |
1086 | CGContextMoveToPoint (gcontext, | |
1087 | r.origin.x, r.origin.y + font->underpos); | |
1088 | CGContextAddLineToPoint (gcontext, r.origin.x + r.size.width, | |
1089 | r.origin.y + font->underpos); | |
1090 | CGContextStrokePath (gcontext); | |
1091 | if (face->underline_color != nil) | |
1092 | [col set]; | |
1093 | } | |
1094 | else | |
1095 | [col set]; | |
1096 | ||
1097 | CGContextSetTextPosition (gcontext, r.origin.x, r.origin.y); | |
1098 | CGContextShowGlyphsWithAdvances (gcontext, s->char2b + s->gidx, | |
1099 | advances, len); | |
1100 | ||
1101 | if (face->overstrike) | |
1102 | { | |
1103 | CGContextSetTextPosition (gcontext, r.origin.x+0.5, r.origin.y); | |
1104 | CGContextShowGlyphsWithAdvances (gcontext, s->char2b + s->gidx, | |
1105 | advances, len); | |
1106 | } | |
1107 | ||
1108 | CGContextRestoreGState (gcontext); | |
1109 | return; | |
1110 | } | |
1111 | #endif /* NS_IMPL_COCOA */ | |
1112 | ||
1113 | } | |
1114 | ||
1115 | ||
1116 | /* Auto-creates a fontset built around the font in font_object, | |
1117 | by creating an attributed string with characters from each | |
1118 | script, then requesting the NS text system to fix attributes | |
1119 | in range. */ | |
1120 | void nsfont_make_fontset_for_font (Lisp_Object name, Lisp_Object font_object) | |
1121 | { | |
1122 | Lisp_Object script, famAndReg; | |
1123 | struct nsfont_info *font_info = | |
1124 | (struct nsfont_info *)XFONT_OBJECT (font_object); | |
1125 | ||
1126 | /* NS text system (and char buf) init */ | |
1127 | static NSTextStorage *store; | |
1128 | static NSLayoutManager *layout; | |
1129 | static NSRange range; | |
1130 | static NSMutableDictionary *attribs; | |
1131 | static Lisp_Object *scripts; | |
1132 | static int nscripts; | |
1133 | static int *scriptsNchars; | |
1134 | static BOOL firstTime = YES; | |
1135 | Lisp_Object regString = build_string ("iso10646-1"); | |
1136 | int i, j; | |
1137 | ||
1138 | if (firstTime == YES) | |
1139 | { | |
1140 | nscripts = XINT (Flength (Vscript_representative_chars)); | |
1141 | scriptsNchars = (int *) malloc (nscripts * sizeof (int)); | |
1142 | unsigned char *buf = malloc (4*nscripts*sizeof (char)); | |
1143 | Lisp_Object scriptsChars = Vscript_representative_chars; | |
1144 | unsigned char *tpos = buf; | |
1145 | ||
1146 | scripts = (Lisp_Object *) malloc (nscripts * sizeof (Lisp_Object)); | |
1147 | ||
1148 | for (i =0; i<nscripts; i++) | |
1149 | { | |
1150 | Lisp_Object sChars = XCAR (scriptsChars); | |
1151 | Lisp_Object chars = XCDR (sChars); | |
1152 | unsigned int ch, c =0; | |
1153 | scripts[i] = XCAR (sChars); | |
1154 | ||
1155 | while (CONSP (chars)) | |
1156 | { | |
1157 | ch = XUINT (XCAR (chars)); | |
1158 | chars = XCDR (chars); | |
1159 | CHAR_STRING_ADVANCE (ch, tpos); | |
1160 | c++; | |
1161 | } | |
1162 | scriptsNchars[i] = c; | |
1163 | ||
1164 | scriptsChars = XCDR (scriptsChars); | |
1165 | } | |
1166 | *tpos = '\0'; | |
1167 | ||
1168 | store = [[NSTextStorage alloc] init]; | |
1169 | layout = [[NSLayoutManager alloc] init]; | |
1170 | [store addLayoutManager: layout]; | |
1171 | [layout release]; | |
1172 | ||
1173 | [store beginEditing]; | |
1174 | [[store mutableString] appendString: | |
1175 | [NSString stringWithUTF8String: buf]]; | |
1176 | [store endEditing]; | |
1177 | ||
1178 | free (buf); | |
1179 | range = NSMakeRange (0, [store length]); | |
1180 | ||
1181 | attribs = [[NSMutableDictionary alloc] init]; | |
1182 | firstTime = NO; | |
1183 | } | |
1184 | ||
1185 | /* set the fonts */ | |
1186 | [store beginEditing]; | |
1187 | [store removeAttribute: NSFontAttributeName range: range]; | |
1188 | [attribs setObject: font_info->nsfont forKey: NSFontAttributeName]; | |
1189 | [store addAttributes: attribs range: range]; | |
1190 | [store endEditing]; | |
1191 | ||
1192 | /* read them out */ | |
1193 | { | |
1194 | NSMutableDictionary *map = | |
1195 | [NSMutableDictionary dictionaryWithCapacity: nscripts * 4]; | |
1196 | NSEnumerator *fonts; | |
1197 | NSFont *cfont = nil, *tfont; | |
1198 | NSNumber *n; | |
1199 | int idx = 0; | |
1200 | int max; | |
1201 | for (i =0; i<nscripts; i++) | |
1202 | { | |
1203 | [map removeAllObjects]; | |
1204 | for (j =0; j<scriptsNchars[i]; j++) | |
1205 | { | |
1206 | cfont = [store attribute: NSFontAttributeName atIndex: idx++ | |
1207 | effectiveRange: NULL]; | |
1208 | n = [map objectForKey: cfont]; | |
1209 | if (n == nil) | |
1210 | n = [NSNumber numberWithInt: 1]; | |
1211 | else | |
1212 | n = [NSNumber numberWithInt: [n intValue] + 1]; | |
1213 | [map setObject: n forKey: cfont]; | |
1214 | } | |
1215 | ||
1216 | /* majority rules */ | |
1217 | max = 0; | |
1218 | fonts = [map keyEnumerator]; | |
1219 | while (tfont = [fonts nextObject]) | |
1220 | { | |
1221 | n = [map objectForKey: tfont]; | |
1222 | if ([n intValue] > max) | |
1223 | { | |
1224 | cfont = tfont; | |
1225 | max = [n intValue]; | |
1226 | } | |
1227 | } | |
1228 | ||
1229 | if (cfont != nil) | |
1230 | { | |
1231 | char *family = [[cfont familyName] UTF8String]; | |
1232 | Lisp_Object famAndReg; | |
1233 | ||
1234 | nsfont_escape_name (family); | |
1235 | famAndReg = Fcons (build_string (family), regString); | |
1236 | ||
1237 | if (NSFONT_TRACE) | |
1238 | fprintf (stderr, "%s fontset: use '%s' for script '%s'\n", | |
1239 | font_info->name, family, | |
1240 | SDATA (SYMBOL_NAME (scripts[i]))); | |
1241 | ||
1242 | Fset_fontset_font (name, scripts[i], famAndReg, Qnil, Qnil); | |
1243 | } | |
1244 | else | |
1245 | { | |
1246 | fprintf (stderr, "%s fontset: none found for script '%s'\n", | |
1247 | font_info->name, SDATA (SYMBOL_NAME (scripts[i]))); | |
1248 | } | |
1249 | } /* for i = script */ | |
1250 | } | |
1251 | } | |
1252 | ||
1253 | ||
1254 | ||
1255 | /* ========================================================================== | |
1256 | ||
1257 | Font glyph and metrics caching functions | |
1258 | ||
1259 | ========================================================================== */ | |
1260 | ||
1261 | /* Find and cache corresponding glyph codes for unicode values in given | |
1262 | hi-byte block of 256. */ | |
1263 | static void | |
1264 | ns_uni_to_glyphs (struct nsfont_info *font_info, unsigned char block) | |
1265 | { | |
1266 | #ifdef NS_IMPL_COCOA | |
1267 | static EmacsGlyphStorage *glyphStorage; | |
1268 | static char firstTime = 1; | |
1269 | #endif | |
1270 | unichar *unichars = xmalloc (0x101 * sizeof (unichar)); | |
1271 | unsigned int i, g, idx; | |
1272 | unsigned short *glyphs; | |
1273 | ||
1274 | if (NSFONT_TRACE) | |
1275 | fprintf (stderr, "%p\tFinding glyphs for glyphs in block %d\n", | |
1276 | font_info, block); | |
1277 | ||
1278 | BLOCK_INPUT; | |
1279 | ||
1280 | #ifdef NS_IMPL_COCOA | |
1281 | if (firstTime) | |
1282 | { | |
1283 | firstTime = 0; | |
1284 | glyphStorage = [[EmacsGlyphStorage alloc] initWithCapacity: 0x100]; | |
1285 | } | |
1286 | #endif | |
1287 | ||
1288 | font_info->glyphs[block] = xmalloc (0x100 * sizeof (unsigned short)); | |
1289 | if (!unichars || !(font_info->glyphs[block])) | |
1290 | abort (); | |
1291 | ||
1292 | /* create a string containing all unicode characters in this block */ | |
1293 | for (idx = block<<8, i =0; i<0x100; idx++, i++) | |
1294 | if (idx < 0xD800 || idx > 0xDFFF) | |
1295 | unichars[i] = idx; | |
1296 | else | |
1297 | unichars[i] = 0xFEFF; | |
1298 | unichars[0x100] = 0; | |
1299 | ||
1300 | { | |
1301 | #ifdef NS_IMPL_COCOA | |
1302 | NSString *allChars = [[NSString alloc] | |
1303 | initWithCharactersNoCopy: unichars | |
1304 | length: 0x100 | |
1305 | freeWhenDone: NO]; | |
1306 | NSGlyphGenerator *glyphGenerator = [NSGlyphGenerator sharedGlyphGenerator]; | |
1307 | /*NSCharacterSet *coveredChars = [nsfont coveredCharacterSet]; */ | |
1308 | unsigned int numGlyphs = [font_info->nsfont numberOfGlyphs]; | |
1309 | unsigned int gInd =0, cInd =0; | |
1310 | ||
1311 | [glyphStorage setString: allChars font: font_info->nsfont]; | |
1312 | [glyphGenerator generateGlyphsForGlyphStorage: glyphStorage | |
1313 | desiredNumberOfCharacters: glyphStorage->maxChar | |
1314 | glyphIndex: &gInd characterIndex: &cInd]; | |
1315 | #endif | |
1316 | glyphs = font_info->glyphs[block]; | |
1317 | for (i =0; i<0x100; i++, glyphs++) | |
1318 | { | |
1319 | #ifdef NS_IMPL_GNUSTEP | |
1320 | g = unichars[i]; | |
1321 | #else | |
1322 | g = glyphStorage->cglyphs[i]; | |
1323 | /*PENDING: is this a good check? maybe need to use coveredChars.. */ | |
1324 | if (g > numGlyphs) | |
1325 | g = 0xFFFF; /* hopefully unused... */ | |
1326 | #endif | |
1327 | *glyphs = g; | |
1328 | } | |
1329 | ||
1330 | #ifdef NS_IMPL_COCOA | |
1331 | [allChars release]; | |
1332 | #endif | |
1333 | } | |
1334 | ||
1335 | UNBLOCK_INPUT; | |
1336 | xfree (unichars); | |
1337 | } | |
1338 | ||
1339 | ||
1340 | /* Determine and cache metrics for corresponding glyph codes in given | |
1341 | hi-byte block of 256. */ | |
1342 | static void | |
1343 | ns_glyph_metrics (struct nsfont_info *font_info, unsigned char block) | |
1344 | { | |
1345 | unsigned int i, g; | |
1346 | unsigned int numGlyphs = [font_info->nsfont numberOfGlyphs]; | |
1347 | NSFont *sfont; | |
1348 | struct font_metrics *metrics; | |
1349 | ||
1350 | if (NSFONT_TRACE) | |
1351 | fprintf (stderr, "%p\tComputing metrics for glyphs in block %d\n", | |
1352 | font_info, block); | |
1353 | ||
1354 | #ifdef NS_IMPL_GNUSTEP | |
1355 | /* not implemented yet (as of startup 0.18), so punt */ | |
1356 | if (numGlyphs == 0) | |
1357 | numGlyphs = 0x10000; | |
1358 | #endif | |
1359 | ||
1360 | BLOCK_INPUT; | |
1361 | sfont = [font_info->nsfont screenFont]; | |
1362 | ||
1363 | font_info->metrics[block] = xmalloc (0x100 * sizeof (struct font_metrics)); | |
1364 | bzero (font_info->metrics[block], 0x100 * sizeof (struct font_metrics)); | |
1365 | if (!(font_info->metrics[block])) | |
1366 | abort (); | |
1367 | ||
1368 | metrics = font_info->metrics[block]; | |
1369 | for (g = block<<8, i =0; i<0x100 && g < numGlyphs; g++, i++, metrics++) | |
1370 | { | |
1371 | float w, lb, rb; | |
1372 | NSRect r = [sfont boundingRectForGlyph: g]; | |
1373 | ||
1374 | #ifdef NS_IMPL_GNUSTEP | |
1375 | { | |
1376 | /* lord help us */ | |
1377 | NSString *s = [NSString stringWithFormat: @"%c", g]; | |
1378 | w = [sfont widthOfString: s]; | |
1379 | } | |
1380 | #else | |
1381 | w = [sfont advancementForGlyph: g].width; | |
1382 | #endif | |
1383 | w = max (w, 2.0); | |
1384 | metrics->width = lrint (w); | |
1385 | ||
1386 | lb = r.origin.x; | |
1387 | rb = r.size.width - w; | |
1388 | if (lb < 0) | |
1389 | metrics->lbearing = round (lb); | |
1390 | if (font_info->ital) | |
1391 | rb += 0.22 * font_info->height; | |
1392 | metrics->rbearing = lrint (w + rb); | |
1393 | ||
1394 | metrics->descent = r.origin.y < 0 ? -r.origin.y : 0; | |
1395 | /*lrint (hshrink * [sfont ascender] + expand * hd/2); */ | |
1396 | metrics->ascent = r.size.height - metrics->descent; | |
1397 | /*-lrint (hshrink* [sfont descender] - expand * hd/2); */ | |
1398 | } | |
1399 | UNBLOCK_INPUT; | |
1400 | } | |
1401 | ||
1402 | ||
1403 | #ifdef NS_IMPL_COCOA | |
1404 | /* helper for font glyph setup */ | |
1405 | @implementation EmacsGlyphStorage | |
1406 | ||
1407 | - init | |
1408 | { | |
1409 | return [self initWithCapacity: 1024]; | |
1410 | } | |
1411 | ||
1412 | - initWithCapacity: (unsigned long) c | |
1413 | { | |
1414 | self = [super init]; | |
1415 | maxChar = 0; | |
1416 | maxGlyph = 0; | |
1417 | dict = [NSMutableDictionary new]; | |
1418 | cglyphs = (CGGlyph *)xmalloc (c * sizeof (CGGlyph)); | |
1419 | return self; | |
1420 | } | |
1421 | ||
1422 | - (void) dealloc | |
1423 | { | |
1424 | if (attrStr != nil) | |
1425 | [attrStr release]; | |
1426 | [dict release]; | |
1427 | xfree (cglyphs); | |
1428 | [super dealloc]; | |
1429 | } | |
1430 | ||
1431 | - (void) setString: (NSString *)str font: (NSFont *)font | |
1432 | { | |
1433 | [dict setObject: font forKey: NSFontAttributeName]; | |
1434 | attrStr = [[NSAttributedString alloc] initWithString: str attributes: dict]; | |
1435 | maxChar = [str length]; | |
1436 | maxGlyph = 0; | |
1437 | } | |
1438 | ||
1439 | /* NSGlyphStorage protocol */ | |
1440 | - (unsigned int)layoutOptions | |
1441 | { | |
1442 | return 0; | |
1443 | } | |
1444 | ||
1445 | - (NSAttributedString *)attributedString | |
1446 | { | |
1447 | return attrStr; | |
1448 | } | |
1449 | ||
1450 | - (void)insertGlyphs: (const NSGlyph *)glyphs length: (unsigned int)length | |
1451 | forStartingGlyphAtIndex: (unsigned int)glyphIndex | |
1452 | characterIndex: (unsigned int)charIndex | |
1453 | { | |
1454 | len = glyphIndex+length; | |
1455 | for (i =glyphIndex; i<len; i++) | |
1456 | cglyphs[i] = glyphs[i-glyphIndex]; | |
1457 | if (len > maxGlyph) | |
1458 | maxGlyph = len; | |
1459 | } | |
1460 | ||
1461 | - (void)setIntAttribute: (int)attributeTag value: (int)val | |
1462 | forGlyphAtIndex: (unsigned)glyphIndex | |
1463 | { | |
1464 | return; | |
1465 | } | |
1466 | ||
1467 | @end | |
1468 | #endif /* NS_IMPL_COCOA */ | |
1469 | ||
1470 | ||
1471 | /* Debugging */ | |
1472 | void | |
1473 | dump_glyphstring (struct glyph_string *s) | |
1474 | { | |
1475 | int i; | |
1476 | ||
1477 | fprintf (stderr, "Glyph string len = %d at (%d, %d) overhang (%d, %d), overlap = %d, bg_filled = %d:", | |
1478 | s->nchars, s->x, s->y, s->left_overhang, s->right_overhang, | |
1479 | s->row->overlapping_p, s->background_filled_p); | |
1480 | for (i =0; i<s->nchars; i++) | |
1481 | fprintf (stderr, "%c", s->first_glyph[i].u.ch); | |
1482 | fprintf (stderr, "\n"); | |
1483 | } | |
1484 | ||
1485 | ||
1486 | ||
1487 | void | |
1488 | syms_of_nsfont () | |
1489 | { | |
1490 | nsfont_driver.type = Qns; | |
1491 | register_font_driver (&nsfont_driver, NULL); | |
1492 | DEFSYM (Qapple, "apple"); | |
1493 | DEFSYM (Qroman, "roman"); | |
1494 | DEFSYM (Qmedium, "medium"); | |
1495 | } | |
0ae1e5e5 | 1496 | |
2f8e74bb | 1497 | // arch-tag: d6c3c6f0-62de-4978-8b1e-b7966fe02cae |