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a68fda4a AR |
1 | /* Font back-end driver for the NeXT/Open/GNUstep and MacOSX window system. |
2 | See font.h | |
acaf905b | 3 | Copyright (C) 2006-2012 Free Software Foundation, Inc. |
a68fda4a AR |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
32d235f8 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
a68fda4a | 8 | it under the terms of the GNU General Public License as published by |
32d235f8 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
a68fda4a AR |
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 | |
32d235f8 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
a68fda4a AR |
19 | |
20 | Author: Adrian Robert (arobert@cogsci.ucsd.edu) | |
21 | */ | |
22 | ||
5a06864f AR |
23 | /* This should be the first include, as it may set up #defines affecting |
24 | interpretation of even the system includes. */ | |
08a494a3 | 25 | #include <config.h> |
a68fda4a AR |
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" | |
80417b95 | 39 | #include "termchar.h" |
a68fda4a | 40 | |
6e2f42b4 | 41 | /* TODO: Drop once we can assume gnustep-gui 0.17.1. */ |
4e2f36cf AR |
42 | #ifdef NS_IMPL_GNUSTEP |
43 | #import <AppKit/NSFontDescriptor.h> | |
44 | #endif | |
45 | ||
a68fda4a AR |
46 | #define NSFONT_TRACE 0 |
47 | ||
48 | extern Lisp_Object Qns; | |
49 | extern Lisp_Object Qnormal, Qbold, Qitalic, Qcondensed, Qexpanded; | |
50 | static Lisp_Object Qapple, Qroman, Qmedium; | |
a68fda4a | 51 | extern Lisp_Object Qappend; |
a68fda4a AR |
52 | extern float ns_antialias_threshold; |
53 | extern int ns_tmp_flags; | |
54 | extern struct nsfont_info *ns_tmp_font; | |
55 | ||
56 | /* font glyph and metrics caching functions, implemented at end */ | |
57 | static void ns_uni_to_glyphs (struct nsfont_info *font_info, | |
58 | unsigned char block); | |
59 | static void ns_glyph_metrics (struct nsfont_info *font_info, | |
60 | unsigned char block); | |
61 | ||
62 | ||
63 | /* ========================================================================== | |
64 | ||
65 | Utilities | |
66 | ||
67 | ========================================================================== */ | |
68 | ||
69 | ||
70 | /* Replace spaces w/another character so emacs core font parsing routines | |
71 | aren't thrown off. */ | |
72 | static void | |
8840261a | 73 | ns_escape_name (char *name) |
a68fda4a AR |
74 | { |
75 | int i =0, len =strlen (name); | |
76 | for ( ; i<len; i++) | |
77 | if (name[i] == ' ') | |
78 | name[i] = '_'; | |
79 | } | |
80 | ||
81 | ||
82 | /* Reconstruct spaces in a font family name passed through emacs. */ | |
83 | static void | |
8840261a | 84 | ns_unescape_name (char *name) |
a68fda4a AR |
85 | { |
86 | int i =0, len =strlen (name); | |
87 | for ( ; i<len; i++) | |
88 | if (name[i] == '_') | |
89 | name[i] = ' '; | |
90 | } | |
91 | ||
92 | ||
93 | /* Extract family name from a font spec. */ | |
94 | static NSString * | |
8840261a | 95 | ns_get_family (Lisp_Object font_spec) |
a68fda4a AR |
96 | { |
97 | Lisp_Object tem = AREF (font_spec, FONT_FAMILY_INDEX); | |
98 | if (NILP (tem)) | |
99 | return nil; | |
100 | else | |
101 | { | |
0dc8cf50 | 102 | char *tmp = xstrdup (SSDATA (SYMBOL_NAME (tem))); |
a68fda4a | 103 | NSString *family; |
8840261a | 104 | ns_unescape_name (tmp); |
a68fda4a | 105 | family = [NSString stringWithUTF8String: tmp]; |
613052cd | 106 | xfree (tmp); |
a68fda4a AR |
107 | return family; |
108 | } | |
109 | } | |
110 | ||
111 | ||
4b7f335c AR |
112 | /* Return 0 if attr not set, else value (which might also be 0). |
113 | On Leopard 0 gets returned even on descriptors where the attribute | |
114 | was never set, so there's no way to distinguish between unspecified | |
115 | and set to not have. Callers should assume 0 means unspecified. */ | |
8840261a AR |
116 | static float |
117 | ns_attribute_fvalue (NSFontDescriptor *fdesc, NSString *trait) | |
118 | { | |
4b7f335c AR |
119 | NSDictionary *tdict = [fdesc objectForKey: NSFontTraitsAttribute]; |
120 | NSNumber *val = [tdict objectForKey: trait]; | |
8840261a AR |
121 | return val == nil ? 0.0 : [val floatValue]; |
122 | } | |
a68fda4a | 123 | |
a68fda4a | 124 | |
8840261a AR |
125 | /* Converts FONT_WEIGHT, FONT_SLANT, FONT_WIDTH, plus family and script/lang |
126 | to NSFont descriptor. Information under extra only needed for matching. */ | |
127 | #define STYLE_REF 100 | |
204ee57f JD |
128 | static NSFontDescriptor * |
129 | ns_spec_to_descriptor (Lisp_Object font_spec) | |
8840261a AR |
130 | { |
131 | NSFontDescriptor *fdesc; | |
132 | NSMutableDictionary *fdAttrs = [NSMutableDictionary new]; | |
133 | NSMutableDictionary *tdict = [NSMutableDictionary new]; | |
134 | NSString *family = ns_get_family (font_spec); | |
135 | float n; | |
136 | ||
137 | /* add each attr in font_spec to fdAttrs.. */ | |
138 | n = min (FONT_WEIGHT_NUMERIC (font_spec), 200); | |
139 | if (n != -1 && n != STYLE_REF) | |
140 | [tdict setObject: [NSNumber numberWithFloat: (n - 100.0) / 100.0] | |
141 | forKey: NSFontWeightTrait]; | |
142 | n = min (FONT_SLANT_NUMERIC (font_spec), 200); | |
143 | if (n != -1 && n != STYLE_REF) | |
144 | [tdict setObject: [NSNumber numberWithFloat: (n - 100.0) / 100.0] | |
145 | forKey: NSFontSlantTrait]; | |
146 | n = min (FONT_WIDTH_NUMERIC (font_spec), 200); | |
147 | if (n > -1 && (n > STYLE_REF + 10 || n < STYLE_REF - 10)) | |
148 | [tdict setObject: [NSNumber numberWithFloat: (n - 100.0) / 100.0] | |
149 | forKey: NSFontWidthTrait]; | |
150 | if ([tdict count] > 0) | |
151 | [fdAttrs setObject: tdict forKey: NSFontTraitsAttribute]; | |
152 | ||
153 | fdesc = [NSFontDescriptor fontDescriptorWithFontAttributes: fdAttrs]; | |
38182d90 | 154 | if (family != nil) |
204ee57f | 155 | { |
8840261a | 156 | fdesc = [fdesc fontDescriptorWithFamily: family]; |
204ee57f JD |
157 | } |
158 | ||
159 | [fdAttrs release]; | |
160 | [tdict release]; | |
8840261a | 161 | return fdesc; |
a68fda4a AR |
162 | } |
163 | ||
164 | ||
8840261a | 165 | /* Converts NSFont descriptor to FONT_WEIGHT, FONT_SLANT, FONT_WIDTH, etc.. */ |
a68fda4a | 166 | static Lisp_Object |
9c5bd55a J |
167 | ns_descriptor_to_entity (NSFontDescriptor *desc, |
168 | Lisp_Object extra, | |
169 | const char *style) | |
a68fda4a | 170 | { |
8840261a AR |
171 | Lisp_Object font_entity = font_make_entity (); |
172 | /* NSString *psName = [desc postscriptName]; */ | |
173 | NSString *family = [desc objectForKey: NSFontFamilyAttribute]; | |
8840261a | 174 | unsigned int traits = [desc symbolicTraits]; |
b9173dc2 | 175 | char *escapedFamily; |
8840261a | 176 | |
b9173dc2 AR |
177 | /* Shouldn't happen, but on Tiger fallback desc gets name but no family. */ |
178 | if (family == nil) | |
179 | family = [desc objectForKey: NSFontNameAttribute]; | |
180 | if (family == nil) | |
181 | family = [[NSFont userFixedPitchFontOfSize: 0] familyName]; | |
182 | ||
6ca3801d | 183 | escapedFamily = xstrdup ([family UTF8String]); |
8840261a AR |
184 | ns_escape_name (escapedFamily); |
185 | ||
186 | ASET (font_entity, FONT_TYPE_INDEX, Qns); | |
187 | ASET (font_entity, FONT_FOUNDRY_INDEX, Qapple); | |
188 | ASET (font_entity, FONT_FAMILY_INDEX, intern (escapedFamily)); | |
189 | ASET (font_entity, FONT_ADSTYLE_INDEX, style ? intern (style) : Qnil); | |
190 | ASET (font_entity, FONT_REGISTRY_INDEX, Qiso10646_1); | |
191 | ||
192 | FONT_SET_STYLE (font_entity, FONT_WEIGHT_INDEX, | |
193 | traits & NSFontBoldTrait ? Qbold : Qmedium); | |
194 | /* FONT_SET_STYLE (font_entity, FONT_WEIGHT_INDEX, | |
195 | make_number (100 + 100 | |
196 | * ns_attribute_fvalue (desc, NSFontWeightTrait)));*/ | |
197 | FONT_SET_STYLE (font_entity, FONT_SLANT_INDEX, | |
198 | traits & NSFontItalicTrait ? Qitalic : Qnormal); | |
199 | /* FONT_SET_STYLE (font_entity, FONT_SLANT_INDEX, | |
200 | make_number (100 + 100 | |
201 | * ns_attribute_fvalue (desc, NSFontSlantTrait)));*/ | |
202 | FONT_SET_STYLE (font_entity, FONT_WIDTH_INDEX, | |
203 | traits & NSFontCondensedTrait ? Qcondensed : | |
204 | traits & NSFontExpandedTrait ? Qexpanded : Qnormal); | |
205 | /* FONT_SET_STYLE (font_entity, FONT_WIDTH_INDEX, | |
206 | make_number (100 + 100 | |
207 | * ns_attribute_fvalue (desc, NSFontWidthTrait)));*/ | |
208 | ||
209 | ASET (font_entity, FONT_SIZE_INDEX, make_number (0)); | |
210 | ASET (font_entity, FONT_AVGWIDTH_INDEX, make_number (0)); | |
211 | ASET (font_entity, FONT_SPACING_INDEX, | |
212 | make_number([desc symbolicTraits] & NSFontMonoSpaceTrait | |
213 | ? FONT_SPACING_MONO : FONT_SPACING_PROPORTIONAL)); | |
214 | ||
215 | ASET (font_entity, FONT_EXTRA_INDEX, extra); | |
216 | ASET (font_entity, FONT_OBJLIST_INDEX, Qnil); | |
217 | ||
218 | if (NSFONT_TRACE) | |
219 | { | |
220 | fprintf (stderr, "created font_entity:\n "); | |
221 | debug_print (font_entity); | |
222 | } | |
a68fda4a | 223 | |
613052cd | 224 | xfree (escapedFamily); |
8840261a AR |
225 | return font_entity; |
226 | } | |
a68fda4a | 227 | |
8840261a AR |
228 | |
229 | /* Default font entity. */ | |
230 | static Lisp_Object | |
3d608a86 | 231 | ns_fallback_entity (void) |
8840261a AR |
232 | { |
233 | return ns_descriptor_to_entity ([[NSFont userFixedPitchFontOfSize: 0] | |
234 | fontDescriptor], Qnil, NULL); | |
a68fda4a AR |
235 | } |
236 | ||
237 | ||
179dad8e | 238 | /* Utility: get width of a char c in screen font SFONT */ |
8840261a AR |
239 | static float |
240 | ns_char_width (NSFont *sfont, int c) | |
a68fda4a | 241 | { |
179dad8e CY |
242 | float w = -1.0; |
243 | NSString *cstr = [NSString stringWithFormat: @"%c", c]; | |
244 | ||
8840261a | 245 | #ifdef NS_IMPL_COCOA |
179dad8e CY |
246 | NSGlyph glyph = [sfont glyphWithName: cstr]; |
247 | if (glyph) | |
248 | w = [sfont advancementForGlyph: glyph].width; | |
8840261a | 249 | #endif |
179dad8e CY |
250 | |
251 | if (w < 0.0) | |
e28db5bc AR |
252 | { |
253 | NSDictionary *attrsDictionary = | |
254 | [NSDictionary dictionaryWithObject: sfont forKey: NSFontAttributeName]; | |
255 | w = [cstr sizeWithAttributes: attrsDictionary].width; | |
256 | } | |
179dad8e CY |
257 | |
258 | return max (w, 1.0); | |
259 | } | |
260 | ||
261 | /* Return average width over ASCII printable characters for SFONT. */ | |
262 | ||
263 | static NSString *ascii_printable; | |
264 | ||
265 | static int | |
266 | ns_ascii_average_width (NSFont *sfont) | |
267 | { | |
268 | float w = -1.0; | |
269 | ||
270 | if (!ascii_printable) | |
271 | { | |
d7191076 | 272 | char chars[96]; |
179dad8e CY |
273 | int ch; |
274 | for (ch = 0; ch < 95; ch++) | |
275 | chars[ch] = ' ' + ch; | |
d7191076 | 276 | chars[95] = '\0'; |
179dad8e | 277 | |
93044f7b | 278 | ascii_printable = [[NSString alloc] initWithFormat: @"%s", chars]; |
179dad8e CY |
279 | } |
280 | ||
281 | #ifdef NS_IMPL_COCOA | |
282 | NSGlyph glyph = [sfont glyphWithName: ascii_printable]; | |
283 | if (glyph) | |
284 | w = [sfont advancementForGlyph: glyph].width; | |
285 | #endif | |
286 | ||
287 | if (w < 0.0) | |
288 | { | |
289 | NSDictionary *attrsDictionary = | |
290 | [NSDictionary dictionaryWithObject: sfont forKey: NSFontAttributeName]; | |
291 | w = [ascii_printable sizeWithAttributes: attrsDictionary].width; | |
292 | } | |
293 | ||
294 | return lrint (w / 95.0); | |
8840261a AR |
295 | } |
296 | ||
297 | ||
298 | /* Return whether set1 covers set2 to a reasonable extent given by pct. | |
fe7a3057 | 299 | We check, out of each 16 Unicode char range containing chars in set2, |
8840261a AR |
300 | whether at least one character is present in set1. |
301 | This must be true for pct of the pairs to consider it covering. */ | |
302 | static BOOL | |
303 | ns_charset_covers(NSCharacterSet *set1, NSCharacterSet *set2, float pct) | |
304 | { | |
305 | const unsigned short *bytes1 = [[set1 bitmapRepresentation] bytes]; | |
306 | const unsigned short *bytes2 = [[set2 bitmapRepresentation] bytes]; | |
307 | int i, off = 0, tot = 0; | |
308 | ||
24ef80ae PE |
309 | /* Work around what appears to be a GNUstep bug. |
310 | See <http://bugs.gnu.org/11853>. */ | |
311 | if (! (bytes1 && bytes2)) | |
312 | return NO; | |
313 | ||
8840261a AR |
314 | for (i=0; i<4096; i++, bytes1++, bytes2++) |
315 | if (*bytes2) | |
316 | { | |
317 | tot++; | |
318 | if (*bytes1 == 0) // *bytes1 & *bytes2 != *bytes2 | |
319 | off++; | |
320 | } | |
321 | //fprintf(stderr, "off = %d\ttot = %d\n", off,tot); | |
322 | return (float)off / tot < 1.0 - pct; | |
323 | } | |
324 | ||
325 | ||
326 | /* Convert :lang property to a script. Use of :lang property by font backend | |
327 | seems to be limited for now (2009/05) to ja, zh, and ko. */ | |
328 | static NSString | |
329 | *ns_lang_to_script (Lisp_Object lang) | |
330 | { | |
0dc8cf50 | 331 | if (!strcmp (SSDATA (SYMBOL_NAME (lang)), "ja")) |
8840261a AR |
332 | return @"han"; |
333 | /* NOTE: ja given for any hanzi that's also a kanji, but Chinese fonts | |
334 | have more characters. */ | |
0dc8cf50 | 335 | else if (!strcmp (SSDATA (SYMBOL_NAME (lang)), "zh")) |
8840261a | 336 | return @"han"; |
0dc8cf50 | 337 | else if (!strcmp (SSDATA (SYMBOL_NAME (lang)), "ko")) |
8840261a AR |
338 | return @"hangul"; |
339 | else | |
340 | return @""; | |
341 | } | |
342 | ||
343 | ||
344 | /* Convert OTF 4-letter script code to emacs script name. (Why can't | |
fe7a3057 | 345 | everyone just use some standard Unicode names for these?) */ |
8840261a AR |
346 | static NSString |
347 | *ns_otf_to_script (Lisp_Object otf) | |
348 | { | |
349 | Lisp_Object script = assq_no_quit (XCAR (otf), Votf_script_alist); | |
350 | return CONSP (script) | |
0dc8cf50 | 351 | ? [NSString stringWithUTF8String: SSDATA (SYMBOL_NAME (XCDR ((script))))] |
8840261a AR |
352 | : @""; |
353 | } | |
354 | ||
355 | ||
87f66bd3 AR |
356 | /* Convert a font registry, such as */ |
357 | static NSString | |
358 | *ns_registry_to_script (char *reg) | |
359 | { | |
360 | Lisp_Object script, r, rts = Vns_reg_to_script; | |
361 | while CONSP (rts) | |
362 | { | |
363 | r = XCAR (XCAR (rts)); | |
0dc8cf50 | 364 | if (!strncmp(SSDATA(r), reg, strlen(SSDATA(r)))) |
87f66bd3 AR |
365 | { |
366 | script = XCDR (XCAR (rts)); | |
0dc8cf50 | 367 | return [NSString stringWithUTF8String: SSDATA (SYMBOL_NAME (script))]; |
87f66bd3 AR |
368 | } |
369 | rts = XCDR (rts); | |
370 | } | |
371 | return @""; | |
372 | } | |
373 | ||
374 | ||
375 | /* Searches the :script, :lang, and :otf extra-bundle properties of the spec, | |
376 | plus registry regular property, for something that can be mapped to a | |
fe7a3057 | 377 | Unicode script. Empty string returned if no script spec found. */ |
8840261a AR |
378 | static NSString |
379 | *ns_get_req_script (Lisp_Object font_spec) | |
380 | { | |
87f66bd3 | 381 | Lisp_Object reg = AREF (font_spec, FONT_REGISTRY_INDEX); |
8840261a AR |
382 | Lisp_Object extra = AREF (font_spec, FONT_EXTRA_INDEX); |
383 | ||
87f66bd3 | 384 | /* The extra-bundle properties have priority. */ |
8840261a AR |
385 | for ( ; CONSP (extra); extra = XCDR (extra)) |
386 | { | |
387 | Lisp_Object tmp = XCAR (extra); | |
388 | if (CONSP (tmp)) | |
389 | { | |
390 | Lisp_Object key = XCAR (tmp), val = XCDR (tmp); | |
391 | if (EQ (key, QCscript) && SYMBOLP (val)) | |
392 | return [NSString stringWithUTF8String: | |
0dc8cf50 | 393 | SSDATA (SYMBOL_NAME (val))]; |
8840261a AR |
394 | if (EQ (key, QClang) && SYMBOLP (val)) |
395 | return ns_lang_to_script (val); | |
396 | if (EQ (key, QCotf) && CONSP (val) && SYMBOLP (XCAR (val))) | |
397 | return ns_otf_to_script (val); | |
398 | } | |
399 | } | |
87f66bd3 AR |
400 | |
401 | /* If we get here, check the charset portion of the registry. */ | |
402 | if (! NILP (reg)) | |
403 | { | |
404 | /* XXX: iso10646 is passed in for non-ascii latin-1 characters | |
405 | (which causes box rendering if we don't treat it like iso8858-1) | |
406 | but also for ascii (which causes unnecessary font substitution). */ | |
407 | #if 0 | |
408 | if (EQ (reg, Qiso10646_1)) | |
409 | reg = Qiso8859_1; | |
410 | #endif | |
0dc8cf50 | 411 | return ns_registry_to_script (SSDATA (SYMBOL_NAME (reg))); |
87f66bd3 AR |
412 | } |
413 | ||
8840261a AR |
414 | return @""; |
415 | } | |
416 | ||
417 | ||
418 | /* This small function is static in fontset.c. If it can be made public for | |
419 | all ports, remove this, but otherwise it doesn't seem worth the ifdefs. */ | |
420 | static void | |
421 | accumulate_script_ranges (Lisp_Object arg, Lisp_Object range, Lisp_Object val) | |
422 | { | |
423 | if (EQ (XCAR (arg), val)) | |
424 | { | |
425 | if (CONSP (range)) | |
426 | XSETCDR (arg, Fcons (Fcons (XCAR (range), XCDR (range)), XCDR (arg))); | |
427 | else | |
428 | XSETCDR (arg, Fcons (Fcons (range, range), XCDR (arg))); | |
429 | } | |
430 | } | |
431 | ||
432 | ||
fe7a3057 | 433 | /* Use the Unicode range information in Vchar_script_table to convert a script |
8840261a AR |
434 | name into an NSCharacterSet. */ |
435 | static NSCharacterSet | |
436 | *ns_script_to_charset (NSString *scriptName) | |
437 | { | |
438 | NSMutableCharacterSet *charset = [NSMutableCharacterSet new]; | |
439 | Lisp_Object script = intern ([scriptName UTF8String]); | |
440 | Lisp_Object script_list = XCHAR_TABLE (Vchar_script_table)->extras[0]; | |
441 | ||
442 | if (! NILP (Fmemq (script, script_list))) | |
443 | { | |
444 | Lisp_Object ranges, range_list; | |
445 | ||
446 | ranges = Fcons (script, Qnil); | |
447 | map_char_table (accumulate_script_ranges, Qnil, Vchar_script_table, | |
448 | ranges); | |
449 | range_list = Fnreverse (XCDR (ranges)); | |
450 | if (! NILP (range_list)) | |
451 | { | |
452 | for (; CONSP (range_list); range_list = XCDR (range_list)) | |
453 | { | |
454 | int start = XINT (XCAR (XCAR (range_list))); | |
455 | int end = XINT (XCDR (XCAR (range_list))); | |
456 | if (NSFONT_TRACE) | |
457 | debug_print (XCAR (range_list)); | |
458 | if (end < 0x10000) | |
459 | [charset addCharactersInRange: | |
460 | NSMakeRange (start, end-start)]; | |
461 | } | |
462 | } | |
463 | } | |
464 | return charset; | |
a68fda4a AR |
465 | } |
466 | ||
467 | ||
8840261a AR |
468 | /* Return an array of font families containing characters for the given |
469 | script, for the given coverage criterion, including at least LastResort. | |
470 | Results are cached by script for faster access. | |
471 | If none are found, we reduce the percentage and try again, until 5%. | |
472 | This provides a font with at least some characters if such can be found. | |
473 | We don't use isSupersetOfSet: because (a) it doesn't work on Tiger, and | |
fe7a3057 | 474 | (b) need approximate match as fonts covering full Unicode ranges are rare. */ |
8840261a AR |
475 | static NSSet |
476 | *ns_get_covering_families (NSString *script, float pct) | |
477 | { | |
478 | static NSMutableDictionary *scriptToFamilies = nil; | |
479 | NSMutableSet *families; | |
480 | ||
481 | if (NSFONT_TRACE) | |
482 | NSLog(@"Request covering families for script: '%@'", script); | |
483 | ||
484 | if (scriptToFamilies == nil) | |
e41820ee | 485 | scriptToFamilies = [[NSMutableDictionary alloc] init]; |
8840261a AR |
486 | |
487 | if ((families = [scriptToFamilies objectForKey: script]) == nil) | |
488 | { | |
489 | NSFontManager *fontMgr = [NSFontManager sharedFontManager]; | |
490 | NSArray *allFamilies = [fontMgr availableFontFamilies]; | |
491 | ||
492 | if ([script length] == 0) | |
493 | families = [NSMutableSet setWithArray: allFamilies]; | |
494 | else | |
495 | { | |
496 | NSCharacterSet *charset = ns_script_to_charset (script); | |
497 | NSString *family; | |
498 | families = [NSMutableSet setWithCapacity: 10]; | |
499 | while (1) | |
500 | { | |
501 | NSEnumerator *allFamiliesEnum = [allFamilies objectEnumerator]; | |
0dc8cf50 | 502 | while ((family = [allFamiliesEnum nextObject])) |
8840261a AR |
503 | { |
504 | NSCharacterSet *fset = [[fontMgr fontWithFamily: family | |
505 | traits: 0 weight: 5 size: 12.0] coveredCharacterSet]; | |
506 | /* Some fonts on OS X, maybe many on GNUstep, return nil. */ | |
507 | if (fset == nil) | |
508 | fset = [NSCharacterSet characterSetWithRange: | |
509 | NSMakeRange (0, 127)]; | |
510 | if (ns_charset_covers(fset, charset, pct)) | |
511 | [families addObject: family]; | |
512 | } | |
513 | pct -= 0.2; | |
514 | if ([families count] > 0 || pct < 0.05) | |
515 | break; | |
516 | } | |
204ee57f | 517 | [charset release]; |
8840261a AR |
518 | } |
519 | #ifdef NS_IMPL_COCOA | |
520 | if ([families count] == 0) | |
521 | [families addObject: @"LastResort"]; | |
522 | #endif | |
523 | [scriptToFamilies setObject: families forKey: script]; | |
524 | } | |
525 | ||
526 | if (NSFONT_TRACE) | |
527 | NSLog(@" returning %d families", [families count]); | |
528 | return families; | |
529 | } | |
530 | ||
531 | ||
532 | /* Implementation for list() and match(). List() can return nil, match() | |
533 | must return something. Strategy is to drop family name from attribute | |
534 | matching set for match. */ | |
a68fda4a | 535 | static Lisp_Object |
8840261a | 536 | ns_findfonts (Lisp_Object font_spec, BOOL isMatch) |
a68fda4a | 537 | { |
8840261a AR |
538 | Lisp_Object tem, list = Qnil; |
539 | NSFontDescriptor *fdesc, *desc; | |
540 | NSMutableSet *fkeys; | |
541 | NSArray *matchingDescs; | |
542 | NSEnumerator *dEnum; | |
543 | NSString *family; | |
544 | NSSet *cFamilies; | |
545 | BOOL foundItal = NO; | |
546 | ||
547 | if (NSFONT_TRACE) | |
548 | { | |
549 | fprintf (stderr, "nsfont: %s for fontspec:\n ", | |
550 | (isMatch ? "match" : "list")); | |
551 | debug_print (font_spec); | |
552 | } | |
553 | ||
8840261a AR |
554 | cFamilies = ns_get_covering_families (ns_get_req_script (font_spec), 0.90); |
555 | ||
556 | fdesc = ns_spec_to_descriptor (font_spec); | |
557 | fkeys = [NSMutableSet setWithArray: [[fdesc fontAttributes] allKeys]]; | |
558 | if (isMatch) | |
559 | [fkeys removeObject: NSFontFamilyAttribute]; | |
560 | ||
561 | matchingDescs = [fdesc matchingFontDescriptorsWithMandatoryKeys: fkeys]; | |
562 | if (NSFONT_TRACE) | |
563 | NSLog(@"Got desc %@ and found %d matching fonts from it: ", fdesc, | |
564 | [matchingDescs count]); | |
565 | ||
0dc8cf50 | 566 | for (dEnum = [matchingDescs objectEnumerator]; (desc = [dEnum nextObject]);) |
8840261a AR |
567 | { |
568 | if (![cFamilies containsObject: | |
569 | [desc objectForKey: NSFontFamilyAttribute]]) | |
570 | continue; | |
1586503c | 571 | tem = ns_descriptor_to_entity (desc, |
8840261a | 572 | AREF (font_spec, FONT_EXTRA_INDEX), |
1586503c AR |
573 | NULL); |
574 | if (isMatch) | |
575 | return tem; | |
576 | list = Fcons (tem, list); | |
e4e9c24b | 577 | if (fabs (ns_attribute_fvalue (desc, NSFontSlantTrait)) > 0.05) |
8840261a AR |
578 | foundItal = YES; |
579 | } | |
580 | ||
581 | /* Add synthItal member if needed. */ | |
582 | family = [fdesc objectForKey: NSFontFamilyAttribute]; | |
4b7f335c | 583 | if (family != nil && !foundItal && XINT (Flength (list)) > 0) |
8840261a | 584 | { |
204ee57f JD |
585 | NSFontDescriptor *s1 = [NSFontDescriptor new]; |
586 | NSFontDescriptor *sDesc | |
587 | = [[s1 fontDescriptorWithSymbolicTraits: NSFontItalicTrait] | |
588 | fontDescriptorWithFamily: family]; | |
8840261a AR |
589 | list = Fcons (ns_descriptor_to_entity (sDesc, |
590 | AREF (font_spec, FONT_EXTRA_INDEX), | |
591 | "synthItal"), list); | |
204ee57f | 592 | [s1 release]; |
8840261a AR |
593 | } |
594 | ||
1395c6f5 | 595 | /* Return something if was a match and nothing found. */ |
1586503c AR |
596 | if (isMatch) |
597 | return ns_fallback_entity (); | |
1395c6f5 | 598 | |
8840261a | 599 | if (NSFONT_TRACE) |
d311d28c PE |
600 | fprintf (stderr, " Returning %"pI"d entities.\n", |
601 | XINT (Flength (list))); | |
8840261a AR |
602 | |
603 | return list; | |
a68fda4a AR |
604 | } |
605 | ||
606 | ||
8840261a | 607 | |
a68fda4a AR |
608 | /* ========================================================================== |
609 | ||
610 | Font driver implementation | |
611 | ||
612 | ========================================================================== */ | |
613 | ||
8840261a | 614 | |
a68fda4a AR |
615 | static Lisp_Object nsfont_get_cache (FRAME_PTR frame); |
616 | static Lisp_Object nsfont_list (Lisp_Object frame, Lisp_Object font_spec); | |
617 | static Lisp_Object nsfont_match (Lisp_Object frame, Lisp_Object font_spec); | |
618 | static Lisp_Object nsfont_list_family (Lisp_Object frame); | |
619 | static Lisp_Object nsfont_open (FRAME_PTR f, Lisp_Object font_entity, | |
620 | int pixel_size); | |
621 | static void nsfont_close (FRAME_PTR f, struct font *font); | |
622 | static int nsfont_has_char (Lisp_Object entity, int c); | |
623 | static unsigned int nsfont_encode_char (struct font *font, int c); | |
624 | static int nsfont_text_extents (struct font *font, unsigned int *code, | |
625 | int nglyphs, struct font_metrics *metrics); | |
626 | static int nsfont_draw (struct glyph_string *s, int from, int to, int x, int y, | |
a864ef14 | 627 | bool with_background); |
a68fda4a AR |
628 | |
629 | struct font_driver nsfont_driver = | |
630 | { | |
facfbbbd | 631 | 0, /* Qns */ |
a68fda4a AR |
632 | 1, /* case sensitive */ |
633 | nsfont_get_cache, | |
634 | nsfont_list, | |
635 | nsfont_match, | |
636 | nsfont_list_family, | |
637 | NULL, /*free_entity */ | |
638 | nsfont_open, | |
639 | nsfont_close, | |
640 | NULL, /* prepare_face */ | |
641 | NULL, /* done_face */ | |
642 | nsfont_has_char, | |
643 | nsfont_encode_char, | |
644 | nsfont_text_extents, | |
645 | nsfont_draw, | |
646 | /* excluded: get_bitmap, free_bitmap, get_outline, free_outline, | |
647 | anchor_point, otf_capability, otf_driver, | |
648 | start_for_frame, end_for_frame, shape */ | |
649 | }; | |
650 | ||
651 | ||
652 | /* Return a cache of font-entities on FRAME. The cache must be a | |
653 | cons whose cdr part is the actual cache area. */ | |
654 | static Lisp_Object | |
655 | nsfont_get_cache (FRAME_PTR frame) | |
656 | { | |
657 | Display_Info *dpyinfo = FRAME_NS_DISPLAY_INFO (frame); | |
658 | return (dpyinfo->name_list_element); | |
659 | } | |
660 | ||
661 | ||
8840261a AR |
662 | /* List fonts exactly matching with FONT_SPEC on FRAME. The value is a |
663 | **list** of font-entities. This and match () are sole APIs that allocate | |
664 | font-entities. Properties to be considered (2009/05/19) are: | |
665 | regular: foundry, family, adstyle, registry | |
666 | extended: script, lang, otf | |
667 | "Extended" properties are not part of the vector but get stored as | |
668 | lisp properties under FONT_EXTRA_INDEX. | |
669 | ||
670 | The returned entities should have type set (to 'ns), plus the following: | |
671 | foundry, family, adstyle, registry, | |
672 | weight, slant, width, size (0 if scalable), | |
673 | dpi, spacing, avgwidth (0 if scalable) */ | |
a68fda4a AR |
674 | static Lisp_Object |
675 | nsfont_list (Lisp_Object frame, Lisp_Object font_spec) | |
676 | { | |
8840261a | 677 | return ns_findfonts (font_spec, NO); |
a68fda4a AR |
678 | } |
679 | ||
680 | ||
333f9019 | 681 | /* Return a font entity most closely matching with FONT_SPEC on |
a68fda4a | 682 | FRAME. The closeness is determined by the font backend, thus |
8840261a AR |
683 | `face-font-selection-order' is ignored here. |
684 | Properties to be considered are same as for list(). */ | |
a68fda4a AR |
685 | static Lisp_Object |
686 | nsfont_match (Lisp_Object frame, Lisp_Object font_spec) | |
687 | { | |
8840261a | 688 | return ns_findfonts(font_spec, YES); |
a68fda4a AR |
689 | } |
690 | ||
691 | ||
692 | /* List available families. The value is a list of family names | |
693 | (symbols). */ | |
694 | static Lisp_Object | |
695 | nsfont_list_family (Lisp_Object frame) | |
696 | { | |
697 | Lisp_Object list = Qnil; | |
698 | NSEnumerator *families = | |
699 | [[[NSFontManager sharedFontManager] availableFontFamilies] | |
700 | objectEnumerator]; | |
701 | NSString *family; | |
0dc8cf50 | 702 | while ((family = [families nextObject])) |
a68fda4a | 703 | list = Fcons (intern ([family UTF8String]), list); |
df2142db | 704 | /* FIXME: escape the name? */ |
a68fda4a AR |
705 | |
706 | if (NSFONT_TRACE) | |
d311d28c PE |
707 | fprintf (stderr, "nsfont: list families returning %"pI"d entries\n", |
708 | XINT (Flength (list))); | |
a68fda4a AR |
709 | |
710 | return list; | |
711 | } | |
712 | ||
713 | ||
a68fda4a AR |
714 | /* Open a font specified by FONT_ENTITY on frame F. If the font is |
715 | scalable, open it with PIXEL_SIZE. */ | |
716 | static Lisp_Object | |
717 | nsfont_open (FRAME_PTR f, Lisp_Object font_entity, int pixel_size) | |
718 | { | |
719 | BOOL synthItal; | |
8840261a | 720 | unsigned int traits = 0; |
a68fda4a AR |
721 | struct nsfont_info *font_info; |
722 | struct font *font; | |
8840261a | 723 | NSFontDescriptor *fontDesc = ns_spec_to_descriptor (font_entity); |
a68fda4a AR |
724 | NSFontManager *fontMgr = [NSFontManager sharedFontManager]; |
725 | NSString *family; | |
726 | NSFont *nsfont, *sfont; | |
727 | Lisp_Object tem; | |
728 | NSRect brect; | |
729 | Lisp_Object font_object; | |
a68fda4a | 730 | int fixLeopardBug; |
a68fda4a | 731 | static NSMutableDictionary *fontCache = nil; |
8d0e382e | 732 | NSNumber *cached; |
a68fda4a AR |
733 | |
734 | /* 2008/03/08: The same font may end up being requested for different | |
735 | entities, due to small differences in numeric values or other issues, | |
736 | or for different copies of the same entity. Therefore we cache to | |
737 | avoid creating multiple struct font objects (with metrics cache, etc.) | |
8840261a | 738 | for the same NSFont object. */ |
a68fda4a AR |
739 | if (fontCache == nil) |
740 | fontCache = [[NSMutableDictionary alloc] init]; | |
a68fda4a AR |
741 | |
742 | if (NSFONT_TRACE) | |
743 | { | |
744 | fprintf (stderr, "nsfont: open size %d of fontentity:\n ", pixel_size); | |
745 | debug_print (font_entity); | |
746 | } | |
747 | ||
748 | if (pixel_size <= 0) | |
749 | { | |
750 | /* try to get it out of frame params */ | |
751 | Lisp_Object tem = get_frame_param (f, Qfontsize); | |
752 | pixel_size = NILP (tem) ? 0 : XFASTINT (tem); | |
753 | } | |
754 | ||
755 | tem = AREF (font_entity, FONT_ADSTYLE_INDEX); | |
0dc8cf50 | 756 | synthItal = !NILP (tem) && !strncmp ("synthItal", SSDATA (SYMBOL_NAME (tem)), |
a68fda4a | 757 | 9); |
8840261a | 758 | family = ns_get_family (font_entity); |
b9173dc2 AR |
759 | if (family == nil) |
760 | family = [[NSFont userFixedPitchFontOfSize: 0] familyName]; | |
e4e9c24b AR |
761 | /* Should be > 0.23 as some font descriptors (e.g. Terminus) set to that |
762 | when setting family in ns_spec_to_descriptor(). */ | |
763 | if (ns_attribute_fvalue (fontDesc, NSFontWeightTrait) > 0.50) | |
8840261a | 764 | traits |= NSBoldFontMask; |
e4e9c24b | 765 | if (fabs (ns_attribute_fvalue (fontDesc, NSFontSlantTrait) > 0.05)) |
8840261a | 766 | traits |= NSItalicFontMask; |
a68fda4a | 767 | |
8840261a | 768 | /* see http://cocoadev.com/forums/comments.php?DiscussionID=74 */ |
a68fda4a AR |
769 | fixLeopardBug = traits & NSBoldFontMask ? 10 : 5; |
770 | nsfont = [fontMgr fontWithFamily: family | |
771 | traits: traits weight: fixLeopardBug | |
772 | size: pixel_size]; | |
773 | /* if didn't find, try synthetic italic */ | |
8840261a | 774 | if (nsfont == nil && synthItal) |
a68fda4a AR |
775 | { |
776 | nsfont = [fontMgr fontWithFamily: family | |
777 | traits: traits & ~NSItalicFontMask | |
778 | weight: fixLeopardBug size: pixel_size]; | |
779 | } | |
780 | #ifdef NS_IMPL_COCOA | |
781 | /* LastResort not really a family */ | |
782 | if (nsfont == nil && [@"LastResort" isEqualToString: family]) | |
a68fda4a | 783 | nsfont = [NSFont fontWithName: @"LastResort" size: pixel_size]; |
a68fda4a AR |
784 | #endif |
785 | ||
786 | if (nsfont == nil) | |
787 | { | |
788 | message_with_string ("*** Warning: font in family '%s' not found", | |
789 | build_string ([family UTF8String]), 1); | |
790 | nsfont = [NSFont userFixedPitchFontOfSize: pixel_size]; | |
a68fda4a AR |
791 | } |
792 | ||
8d0e382e AR |
793 | if (NSFONT_TRACE) |
794 | NSLog (@"%@\n", nsfont); | |
1bc98b35 | 795 | |
8d0e382e AR |
796 | /* Check the cache */ |
797 | cached = [fontCache objectForKey: nsfont]; | |
798 | if (cached != nil && !synthItal) | |
799 | { | |
800 | if (NSFONT_TRACE) | |
801 | fprintf(stderr, "*** nsfont_open CACHE HIT!\n"); | |
8840261a | 802 | /* FIXME: Cast from (unsigned long) to Lisp_Object. */ |
86fa089e SM |
803 | XHASH (font_object) = [cached unsignedLongValue]; |
804 | return font_object; | |
8d0e382e AR |
805 | } |
806 | else | |
807 | { | |
808 | font_object = font_make_object (VECSIZE (struct nsfont_info), | |
809 | font_entity, pixel_size); | |
810 | if (!synthItal) | |
8840261a AR |
811 | [fontCache setObject: [NSNumber numberWithUnsignedLong: |
812 | (unsigned long) XHASH (font_object)] | |
813 | forKey: nsfont]; | |
8d0e382e AR |
814 | } |
815 | ||
816 | font_info = (struct nsfont_info *) XFONT_OBJECT (font_object); | |
8840261a | 817 | font = (struct font *) font_info; |
8d0e382e AR |
818 | if (!font) |
819 | return Qnil; /* FIXME: other terms do, but return Qnil causes segfault */ | |
a68fda4a | 820 | |
38182d90 PE |
821 | font_info->glyphs = xzalloc (0x100 * sizeof *font_info->glyphs); |
822 | font_info->metrics = xzalloc (0x100 * sizeof *font_info->metrics); | |
a68fda4a | 823 | |
4d7e6e51 | 824 | block_input (); |
a68fda4a AR |
825 | |
826 | /* for metrics */ | |
827 | sfont = [nsfont screenFont]; | |
828 | if (sfont == nil) | |
829 | sfont = nsfont; | |
830 | ||
831 | /* non-metric backend font struct fields */ | |
832 | font = (struct font *) font_info; | |
833 | font->pixel_size = [sfont pointSize]; | |
834 | font->driver = &nsfont_driver; | |
a68fda4a AR |
835 | font->encoding_charset = -1; |
836 | font->repertory_charset = -1; | |
837 | font->default_ascent = 0; | |
838 | font->vertical_centering = 0; | |
839 | font->baseline_offset = 0; | |
840 | font->relative_compose = 0; | |
841 | font->font_encoder = NULL; | |
842 | ||
a68fda4a AR |
843 | font->props[FONT_FORMAT_INDEX] = Qns; |
844 | font->props[FONT_FILE_INDEX] = Qnil; | |
845 | ||
846 | { | |
a68fda4a | 847 | const char *fontName = [[nsfont fontName] UTF8String]; |
a68fda4a | 848 | |
481ae085 JD |
849 | /* The values specified by fonts are not always exact. For |
850 | * example, a 6x8 font could specify that the descender is | |
851 | * -2.00000405... (represented by 0xc000000220000000). Without | |
852 | * adjustment, the code below would round the descender to -3, | |
853 | * resulting in a font that would be one pixel higher than | |
854 | * intended. */ | |
855 | CGFloat adjusted_descender = [sfont descender] + 0.0001; | |
856 | ||
a68fda4a AR |
857 | #ifdef NS_IMPL_GNUSTEP |
858 | font_info->nsfont = sfont; | |
859 | #else | |
860 | font_info->nsfont = nsfont; | |
861 | #endif | |
862 | [font_info->nsfont retain]; | |
863 | ||
864 | /* set up ns_font (defined in nsgui.h) */ | |
38182d90 | 865 | font_info->name = xstrdup (fontName); |
a68fda4a AR |
866 | font_info->bold = [fontMgr traitsOfFont: nsfont] & NSBoldFontMask; |
867 | font_info->ital = | |
868 | synthItal || ([fontMgr traitsOfFont: nsfont] & NSItalicFontMask); | |
869 | ||
870 | /* Metrics etc.; some fonts return an unusually large max advance, so we | |
871 | only use it for fonts that have wide characters. */ | |
872 | font_info->width = ([sfont numberOfGlyphs] > 2000) ? | |
8840261a | 873 | [sfont maximumAdvancement].width : ns_char_width (sfont, '0'); |
a68fda4a AR |
874 | |
875 | brect = [sfont boundingRectForFont]; | |
a68fda4a | 876 | |
4843aac3 | 877 | font_info->underpos = [sfont underlinePosition]; |
a68fda4a AR |
878 | font_info->underwidth = [sfont underlineThickness]; |
879 | font_info->size = font->pixel_size; | |
a68fda4a AR |
880 | |
881 | /* max bounds */ | |
d55e9c53 | 882 | font_info->max_bounds.ascent = lrint ([sfont ascender]); |
481ae085 | 883 | /* Descender is usually negative. Use floor to avoid |
14a225f9 | 884 | clipping descenders. */ |
d55e9c53 | 885 | font_info->max_bounds.descent = -lrint (floor(adjusted_descender)); |
a68fda4a AR |
886 | font_info->height = |
887 | font_info->max_bounds.ascent + font_info->max_bounds.descent; | |
888 | font_info->max_bounds.width = lrint (font_info->width); | |
889 | font_info->max_bounds.lbearing = lrint (brect.origin.x); | |
890 | font_info->max_bounds.rbearing = | |
891 | lrint (brect.size.width - font_info->width); | |
a68fda4a AR |
892 | |
893 | #ifdef NS_IMPL_COCOA | |
894 | /* set up synthItal and the CG font */ | |
895 | font_info->synthItal = synthItal; | |
896 | { | |
897 | ATSFontRef atsFont = ATSFontFindFromPostScriptName | |
898 | ((CFStringRef)[nsfont fontName], kATSOptionFlagsDefault); | |
899 | ||
900 | if (atsFont == kATSFontRefUnspecified) | |
901 | { | |
902 | /* see if we can get it by dropping italic (then synthesizing) */ | |
903 | atsFont = ATSFontFindFromPostScriptName ((CFStringRef) | |
904 | [[fontMgr convertFont: nsfont toNotHaveTrait: NSItalicFontMask] | |
905 | fontName], kATSOptionFlagsDefault); | |
906 | if (atsFont != kATSFontRefUnspecified) | |
907 | font_info->synthItal = YES; | |
908 | else | |
909 | { | |
910 | /* last resort fallback */ | |
911 | atsFont = ATSFontFindFromPostScriptName | |
912 | ((CFStringRef)@"Monaco", kATSOptionFlagsDefault); | |
913 | } | |
914 | } | |
915 | font_info->cgfont = CGFontCreateWithPlatformFont ((void*)&atsFont); | |
916 | } | |
917 | #endif | |
918 | ||
919 | /* set up metrics portion of font struct */ | |
14a225f9 | 920 | font->ascent = lrint([sfont ascender]); |
481ae085 | 921 | font->descent = -lrint(floor(adjusted_descender)); |
8840261a | 922 | font->space_width = lrint (ns_char_width (sfont, ' ')); |
a68fda4a | 923 | font->max_width = lrint (font_info->max_bounds.width); |
179dad8e CY |
924 | font->min_width = font->space_width; /* Approximate. */ |
925 | font->average_width = ns_ascii_average_width (sfont); | |
926 | ||
a68fda4a AR |
927 | font->height = lrint (font_info->height); |
928 | font->underline_position = lrint (font_info->underpos); | |
929 | font->underline_thickness = lrint (font_info->underwidth); | |
930 | ||
931 | font->props[FONT_NAME_INDEX] = Ffont_xlfd_name (font_object, Qnil); | |
932 | font->props[FONT_FULLNAME_INDEX] = | |
933 | make_unibyte_string (font_info->name, strlen (font_info->name)); | |
934 | } | |
4d7e6e51 | 935 | unblock_input (); |
a68fda4a AR |
936 | |
937 | return font_object; | |
938 | } | |
939 | ||
940 | ||
941 | /* Close FONT on frame F. */ | |
942 | static void | |
943 | nsfont_close (FRAME_PTR f, struct font *font) | |
944 | { | |
945 | struct nsfont_info *font_info = (struct nsfont_info *)font; | |
946 | int i; | |
947 | ||
df2142db | 948 | /* FIXME: this occurs apparently due to same failure to detect same font |
8840261a | 949 | that causes need for cache in nsfont_open () */ |
a68fda4a AR |
950 | if (!font_info) |
951 | return; | |
952 | ||
953 | for (i =0; i<0x100; i++) | |
954 | { | |
5f445726 JM |
955 | xfree (font_info->glyphs[i]); |
956 | xfree (font_info->metrics[i]); | |
a68fda4a AR |
957 | } |
958 | [font_info->nsfont release]; | |
959 | #ifdef NS_IMPL_COCOA | |
8840261a | 960 | CGFontRelease (font_info->cgfont); |
a68fda4a | 961 | #endif |
8840261a AR |
962 | xfree (font_info->name); |
963 | xfree (font_info); | |
a68fda4a AR |
964 | } |
965 | ||
966 | ||
967 | /* If FONT_ENTITY has a glyph for character C (Unicode code point), | |
968 | return 1. If not, return 0. If a font must be opened to check | |
969 | it, return -1. */ | |
970 | static int | |
971 | nsfont_has_char (Lisp_Object entity, int c) | |
972 | { | |
973 | return -1; | |
974 | } | |
975 | ||
976 | ||
977 | /* Return a glyph code of FONT for character C (Unicode code point). | |
978 | If FONT doesn't have such a glyph, return FONT_INVALID_CODE. */ | |
979 | static unsigned int | |
980 | nsfont_encode_char (struct font *font, int c) | |
981 | { | |
982 | struct nsfont_info *font_info = (struct nsfont_info *)font; | |
983 | unsigned char high = (c & 0xff00) >> 8, low = c & 0x00ff; | |
984 | unsigned short g; | |
985 | ||
986 | if (c > 0xFFFF) | |
987 | return FONT_INVALID_CODE; | |
988 | ||
989 | /* did we already cache this block? */ | |
990 | if (!font_info->glyphs[high]) | |
991 | ns_uni_to_glyphs (font_info, high); | |
992 | ||
993 | g = font_info->glyphs[high][low]; | |
a68fda4a AR |
994 | return g == 0xFFFF ? FONT_INVALID_CODE : g; |
995 | } | |
996 | ||
997 | ||
998 | /* Perform the size computation of glyphs of FONT and fill in members | |
999 | of METRICS. The glyphs are specified by their glyph codes in | |
1000 | CODE (length NGLYPHS). */ | |
1001 | static int | |
1002 | nsfont_text_extents (struct font *font, unsigned int *code, int nglyphs, | |
1003 | struct font_metrics *metrics) | |
1004 | { | |
1005 | struct nsfont_info *font_info = (struct nsfont_info *)font; | |
1006 | struct font_metrics *pcm; | |
1007 | unsigned char high, low; | |
1008 | int totalWidth = 0; | |
1009 | int i; | |
1010 | ||
72af86bd | 1011 | memset (metrics, 0, sizeof (struct font_metrics)); |
a68fda4a AR |
1012 | |
1013 | for (i =0; i<nglyphs; i++) | |
1014 | { | |
1015 | /* get metrics for this glyph, filling cache if need be */ | |
df2142db AR |
1016 | /* TODO: get metrics for whole string from an NSLayoutManager |
1017 | (if not too slow) */ | |
a68fda4a AR |
1018 | high = (code[i] & 0xFF00) >> 8; |
1019 | low = code[i] & 0x00FF; | |
1020 | if (!font_info->metrics[high]) | |
1021 | ns_glyph_metrics (font_info, high); | |
1022 | pcm = &(font_info->metrics[high][low]); | |
1023 | ||
1024 | if (metrics->lbearing > totalWidth + pcm->lbearing) | |
1025 | metrics->lbearing = totalWidth + pcm->lbearing; | |
1026 | if (metrics->rbearing < totalWidth + pcm->rbearing) | |
1027 | metrics->rbearing = totalWidth + pcm->rbearing; | |
1028 | if (metrics->ascent < pcm->ascent) | |
1029 | metrics->ascent = pcm->ascent; | |
1030 | if (metrics->descent < pcm->descent) | |
1031 | metrics->descent = pcm->descent; | |
1032 | ||
1033 | totalWidth += pcm->width; | |
1034 | } | |
1035 | ||
1036 | metrics->width = totalWidth; | |
1037 | ||
1038 | return totalWidth; /* not specified in doc, but xfont.c does it */ | |
1039 | } | |
1040 | ||
1041 | ||
1042 | /* Draw glyphs between FROM and TO of S->char2b at (X Y) pixel | |
a864ef14 PE |
1043 | position of frame F with S->FACE and S->GC. If WITH_BACKGROUND, |
1044 | fill the background in advance. It is assured that WITH_BACKGROUND | |
1045 | is false when (FROM > 0 || TO < S->nchars). */ | |
a68fda4a AR |
1046 | static int |
1047 | nsfont_draw (struct glyph_string *s, int from, int to, int x, int y, | |
a864ef14 | 1048 | bool with_background) |
a68fda4a AR |
1049 | /* NOTE: focus and clip must be set |
1050 | also, currently assumed (true in nsterm.m call) from ==0, to ==nchars */ | |
1051 | { | |
1052 | static char cbuf[1024]; | |
1053 | char *c = cbuf; | |
1054 | #ifdef NS_IMPL_GNUSTEP | |
1055 | static float advances[1024]; | |
1056 | float *adv = advances; | |
1057 | #else | |
1058 | static CGSize advances[1024]; | |
1059 | CGSize *adv = advances; | |
1060 | #endif | |
1061 | struct face *face; | |
1062 | NSRect r; | |
1063 | struct nsfont_info *font = ns_tmp_font; | |
1064 | NSColor *col, *bgCol; | |
1065 | unsigned short *t = s->char2b; | |
1066 | int i, len; | |
8840261a AR |
1067 | char isComposite = s->first_glyph->type == COMPOSITE_GLYPH; |
1068 | int end = isComposite ? s->cmp_to : s->nchars; | |
a68fda4a AR |
1069 | |
1070 | /* Select face based on input flags */ | |
1071 | switch (ns_tmp_flags) | |
1072 | { | |
1073 | case NS_DUMPGLYPH_CURSOR: | |
1074 | face = s->face; | |
1075 | break; | |
1076 | case NS_DUMPGLYPH_MOUSEFACE: | |
80417b95 | 1077 | face = FACE_FROM_ID (s->f, MOUSE_HL_INFO (s->f)->mouse_face_face_id); |
a68fda4a AR |
1078 | if (!face) |
1079 | face = FACE_FROM_ID (s->f, MOUSE_FACE_ID); | |
1080 | break; | |
1081 | default: | |
1082 | face = s->face; | |
1083 | } | |
1084 | ||
1085 | r.origin.x = s->x; | |
1086 | if (s->face->box != FACE_NO_BOX && s->first_glyph->left_box_line_p) | |
1087 | r.origin.x += abs (s->face->box_line_width); | |
1088 | ||
1089 | r.origin.y = s->y; | |
1090 | r.size.height = FONT_HEIGHT (font); | |
1091 | ||
1092 | /* Convert UTF-16 (?) to UTF-8 and determine advances. Note if we just ask | |
1093 | NS to render the string, it will come out differently from the individual | |
1094 | character widths added up because of layout processing. */ | |
1095 | { | |
a68fda4a AR |
1096 | int cwidth, twidth = 0; |
1097 | int hi, lo; | |
df2142db | 1098 | /* FIXME: composition: no vertical displacement is considered. */ |
81cfe31c | 1099 | t += s->cmp_from; /* advance into composition */ |
8840261a | 1100 | for (i = s->cmp_from; i < end; i++, t++) |
a68fda4a AR |
1101 | { |
1102 | hi = (*t & 0xFF00) >> 8; | |
1103 | lo = *t & 0x00FF; | |
1104 | if (isComposite) | |
1105 | { | |
8840261a AR |
1106 | if (!s->first_glyph->u.cmp.automatic) |
1107 | cwidth = s->cmp->offsets[i * 2] /* (H offset) */ - twidth; | |
1108 | else | |
1109 | { | |
1110 | Lisp_Object gstring = composition_gstring_from_id (s->cmp_id); | |
1111 | Lisp_Object glyph = LGSTRING_GLYPH (gstring, i); | |
1112 | if (NILP (LGLYPH_ADJUSTMENT (glyph))) | |
1113 | cwidth = LGLYPH_WIDTH (glyph); | |
1114 | else | |
1115 | { | |
1116 | cwidth = LGLYPH_WADJUST (glyph); | |
1117 | #ifdef NS_IMPL_GNUSTEP | |
1118 | *(adv-1) += LGLYPH_XOFF (glyph); | |
1119 | #else | |
1120 | (*(adv-1)).width += LGLYPH_XOFF (glyph); | |
1121 | #endif | |
1122 | } | |
1123 | } | |
a68fda4a AR |
1124 | } |
1125 | else | |
1126 | { | |
df2142db | 1127 | if (!font->metrics[hi]) /* FIXME: why/how can we need this now? */ |
a68fda4a AR |
1128 | ns_glyph_metrics (font, hi); |
1129 | cwidth = font->metrics[hi][lo].width; | |
1130 | } | |
1131 | twidth += cwidth; | |
1132 | #ifdef NS_IMPL_GNUSTEP | |
1133 | *adv++ = cwidth; | |
1134 | CHAR_STRING_ADVANCE (*t, c); /* this converts the char to UTF-8 */ | |
1135 | #else | |
1136 | (*adv++).width = cwidth; | |
1137 | #endif | |
1138 | } | |
1139 | len = adv - advances; | |
1140 | r.size.width = twidth; | |
1141 | *c = 0; | |
1142 | } | |
1143 | ||
1144 | /* fill background if requested */ | |
8840261a | 1145 | if (with_background && !isComposite) |
a68fda4a AR |
1146 | { |
1147 | NSRect br = r; | |
1148 | int fibw = FRAME_INTERNAL_BORDER_WIDTH (s->f); | |
1149 | int mbox_line_width = max (s->face->box_line_width, 0); | |
1150 | ||
1151 | if (s->row->full_width_p) | |
1152 | { | |
1153 | if (br.origin.x <= fibw + 1 + mbox_line_width) | |
1154 | { | |
1155 | br.size.width += br.origin.x - mbox_line_width; | |
1156 | br.origin.x = mbox_line_width; | |
1157 | } | |
1158 | if (FRAME_PIXEL_WIDTH (s->f) - (br.origin.x + br.size.width) | |
1159 | <= fibw+1) | |
1160 | br.size.width += fibw; | |
1161 | } | |
1162 | if (s->face->box == FACE_NO_BOX) | |
1163 | { | |
1164 | /* expand unboxed top row over internal border */ | |
1165 | if (br.origin.y <= fibw + 1 + mbox_line_width) | |
1166 | { | |
1167 | br.size.height += br.origin.y; | |
1168 | br.origin.y = 0; | |
1169 | } | |
1170 | } | |
1171 | else | |
1172 | { | |
1173 | int correction = abs (s->face->box_line_width)+1; | |
1174 | br.origin.y += correction; | |
1175 | br.size.height -= 2*correction; | |
1176 | br.origin.x += correction; | |
1177 | br.size.width -= 2*correction; | |
1178 | } | |
1179 | ||
1180 | if (!s->face->stipple) | |
45d325c4 | 1181 | [(NS_FACE_BACKGROUND (face) != 0 |
a68fda4a AR |
1182 | ? ns_lookup_indexed_color (NS_FACE_BACKGROUND (face), s->f) |
1183 | : FRAME_BACKGROUND_COLOR (s->f)) set]; | |
1184 | else | |
1185 | { | |
1186 | struct ns_display_info *dpyinfo = FRAME_NS_DISPLAY_INFO (s->f); | |
1187 | [[dpyinfo->bitmaps[face->stipple-1].img stippleMask] set]; | |
1188 | } | |
1189 | NSRectFill (br); | |
1190 | } | |
1191 | ||
1192 | ||
1193 | /* set up for character rendering */ | |
d55e9c53 | 1194 | r.origin.y = s->ybase; |
a68fda4a | 1195 | |
15034960 | 1196 | col = (NS_FACE_FOREGROUND (face) != 0 |
a68fda4a AR |
1197 | ? ns_lookup_indexed_color (NS_FACE_FOREGROUND (face), s->f) |
1198 | : FRAME_FOREGROUND_COLOR (s->f)); | |
df2142db | 1199 | /* FIXME: find another way to pass this */ |
a68fda4a | 1200 | bgCol = (ns_tmp_flags != NS_DUMPGLYPH_FOREGROUND ? nil |
45d325c4 | 1201 | : (NS_FACE_BACKGROUND (face) != 0 |
a68fda4a AR |
1202 | ? ns_lookup_indexed_color (NS_FACE_BACKGROUND (face), s->f) |
1203 | : FRAME_BACKGROUND_COLOR (s->f))); | |
1204 | ||
1205 | /* render under GNUstep using DPS */ | |
1206 | #ifdef NS_IMPL_GNUSTEP | |
1207 | { | |
1208 | NSGraphicsContext *context = GSCurrentContext (); | |
1209 | ||
1210 | DPSgsave (context); | |
1211 | [font->nsfont set]; | |
1212 | ||
1213 | /* do erase if "foreground" mode */ | |
1214 | if (bgCol != nil) | |
1215 | { | |
1216 | [bgCol set]; | |
1217 | DPSmoveto (context, r.origin.x, r.origin.y); | |
1218 | /*[context GSSetTextDrawingMode: GSTextFillStroke]; /// not implemented yet */ | |
1219 | DPSxshow (context, cbuf, advances, len); | |
1220 | DPSstroke (context); | |
1221 | [col set]; | |
1222 | /*[context GSSetTextDrawingMode: GSTextFill]; /// not implemented yet */ | |
1223 | } | |
1224 | ||
4843aac3 | 1225 | [col set]; |
a68fda4a AR |
1226 | |
1227 | /* draw with DPSxshow () */ | |
1228 | DPSmoveto (context, r.origin.x, r.origin.y); | |
1229 | DPSxshow (context, cbuf, advances, len); | |
1230 | DPSstroke (context); | |
1231 | ||
1232 | DPSgrestore (context); | |
a68fda4a AR |
1233 | } |
1234 | ||
1235 | #else /* NS_IMPL_COCOA */ | |
1236 | { | |
1237 | CGContextRef gcontext = | |
1238 | [[NSGraphicsContext currentContext] graphicsPort]; | |
1239 | static CGAffineTransform fliptf; | |
1240 | static BOOL firstTime = YES; | |
1241 | ||
1242 | if (firstTime) | |
1243 | { | |
1244 | firstTime = NO; | |
1245 | fliptf = CGAffineTransformMakeScale (1.0, -1.0); | |
1246 | } | |
1247 | ||
1248 | CGContextSaveGState (gcontext); | |
1249 | ||
1250 | fliptf.c = font->synthItal ? Fix2X (kATSItalicQDSkew) : 0.0; | |
1251 | ||
1252 | CGContextSetFont (gcontext, font->cgfont); | |
1253 | CGContextSetFontSize (gcontext, font->size); | |
cf2fdcfb | 1254 | if (NILP (ns_antialias_text) || font->size <= ns_antialias_threshold) |
a68fda4a AR |
1255 | CGContextSetShouldAntialias (gcontext, 0); |
1256 | else | |
1257 | CGContextSetShouldAntialias (gcontext, 1); | |
a68fda4a AR |
1258 | |
1259 | CGContextSetTextMatrix (gcontext, fliptf); | |
1260 | ||
1261 | if (bgCol != nil) | |
1262 | { | |
1263 | /* foreground drawing; erase first to avoid overstrike */ | |
1264 | [bgCol set]; | |
1265 | CGContextSetTextDrawingMode (gcontext, kCGTextFillStroke); | |
1266 | CGContextSetTextPosition (gcontext, r.origin.x, r.origin.y); | |
1267 | CGContextShowGlyphsWithAdvances (gcontext, s->char2b, advances, len); | |
1268 | CGContextSetTextDrawingMode (gcontext, kCGTextFill); | |
1269 | } | |
1270 | ||
4843aac3 | 1271 | [col set]; |
a68fda4a AR |
1272 | |
1273 | CGContextSetTextPosition (gcontext, r.origin.x, r.origin.y); | |
93c7fcf8 | 1274 | CGContextShowGlyphsWithAdvances (gcontext, s->char2b + s->cmp_from, |
a68fda4a AR |
1275 | advances, len); |
1276 | ||
1277 | if (face->overstrike) | |
1278 | { | |
1279 | CGContextSetTextPosition (gcontext, r.origin.x+0.5, r.origin.y); | |
93c7fcf8 | 1280 | CGContextShowGlyphsWithAdvances (gcontext, s->char2b + s->cmp_from, |
a68fda4a AR |
1281 | advances, len); |
1282 | } | |
1283 | ||
1284 | CGContextRestoreGState (gcontext); | |
a68fda4a AR |
1285 | } |
1286 | #endif /* NS_IMPL_COCOA */ | |
4843aac3 AA |
1287 | |
1288 | /* Draw underline, overline, strike-through. */ | |
1289 | ns_draw_text_decoration (s, face, col, r.size.width, r.origin.x); | |
1290 | ||
3fdebbf9 | 1291 | return to-from; |
a68fda4a AR |
1292 | } |
1293 | ||
1294 | ||
a68fda4a AR |
1295 | |
1296 | /* ========================================================================== | |
1297 | ||
1298 | Font glyph and metrics caching functions | |
1299 | ||
1300 | ========================================================================== */ | |
1301 | ||
1302 | /* Find and cache corresponding glyph codes for unicode values in given | |
1303 | hi-byte block of 256. */ | |
1304 | static void | |
1305 | ns_uni_to_glyphs (struct nsfont_info *font_info, unsigned char block) | |
1306 | { | |
1307 | #ifdef NS_IMPL_COCOA | |
1308 | static EmacsGlyphStorage *glyphStorage; | |
1309 | static char firstTime = 1; | |
1310 | #endif | |
1311 | unichar *unichars = xmalloc (0x101 * sizeof (unichar)); | |
1312 | unsigned int i, g, idx; | |
1313 | unsigned short *glyphs; | |
1314 | ||
1315 | if (NSFONT_TRACE) | |
1316 | fprintf (stderr, "%p\tFinding glyphs for glyphs in block %d\n", | |
1317 | font_info, block); | |
1318 | ||
4d7e6e51 | 1319 | block_input (); |
a68fda4a AR |
1320 | |
1321 | #ifdef NS_IMPL_COCOA | |
1322 | if (firstTime) | |
1323 | { | |
1324 | firstTime = 0; | |
1325 | glyphStorage = [[EmacsGlyphStorage alloc] initWithCapacity: 0x100]; | |
1326 | } | |
1327 | #endif | |
1328 | ||
1329 | font_info->glyphs[block] = xmalloc (0x100 * sizeof (unsigned short)); | |
1330 | if (!unichars || !(font_info->glyphs[block])) | |
1088b922 | 1331 | emacs_abort (); |
a68fda4a | 1332 | |
fe7a3057 | 1333 | /* create a string containing all Unicode characters in this block */ |
204ee57f | 1334 | for (idx = block<<8, i = 0; i < 0x100; idx++, i++) |
a68fda4a AR |
1335 | if (idx < 0xD800 || idx > 0xDFFF) |
1336 | unichars[i] = idx; | |
1337 | else | |
1338 | unichars[i] = 0xFEFF; | |
1339 | unichars[0x100] = 0; | |
1340 | ||
1341 | { | |
1342 | #ifdef NS_IMPL_COCOA | |
1343 | NSString *allChars = [[NSString alloc] | |
1344 | initWithCharactersNoCopy: unichars | |
1345 | length: 0x100 | |
1346 | freeWhenDone: NO]; | |
1347 | NSGlyphGenerator *glyphGenerator = [NSGlyphGenerator sharedGlyphGenerator]; | |
1348 | /*NSCharacterSet *coveredChars = [nsfont coveredCharacterSet]; */ | |
1349 | unsigned int numGlyphs = [font_info->nsfont numberOfGlyphs]; | |
204ee57f | 1350 | NSUInteger gInd = 0, cInd = 0; |
a68fda4a AR |
1351 | |
1352 | [glyphStorage setString: allChars font: font_info->nsfont]; | |
1353 | [glyphGenerator generateGlyphsForGlyphStorage: glyphStorage | |
1354 | desiredNumberOfCharacters: glyphStorage->maxChar | |
1355 | glyphIndex: &gInd characterIndex: &cInd]; | |
1356 | #endif | |
1357 | glyphs = font_info->glyphs[block]; | |
204ee57f | 1358 | for (i = 0; i < 0x100; i++, glyphs++) |
a68fda4a AR |
1359 | { |
1360 | #ifdef NS_IMPL_GNUSTEP | |
1361 | g = unichars[i]; | |
1362 | #else | |
1363 | g = glyphStorage->cglyphs[i]; | |
df2142db | 1364 | /* TODO: is this a good check? maybe need to use coveredChars.. */ |
a68fda4a AR |
1365 | if (g > numGlyphs) |
1366 | g = 0xFFFF; /* hopefully unused... */ | |
1367 | #endif | |
1368 | *glyphs = g; | |
1369 | } | |
1370 | ||
1371 | #ifdef NS_IMPL_COCOA | |
1372 | [allChars release]; | |
1373 | #endif | |
1374 | } | |
1375 | ||
4d7e6e51 | 1376 | unblock_input (); |
a68fda4a AR |
1377 | xfree (unichars); |
1378 | } | |
1379 | ||
1380 | ||
1381 | /* Determine and cache metrics for corresponding glyph codes in given | |
1382 | hi-byte block of 256. */ | |
1383 | static void | |
1384 | ns_glyph_metrics (struct nsfont_info *font_info, unsigned char block) | |
1385 | { | |
1386 | unsigned int i, g; | |
1387 | unsigned int numGlyphs = [font_info->nsfont numberOfGlyphs]; | |
1388 | NSFont *sfont; | |
1389 | struct font_metrics *metrics; | |
1390 | ||
1391 | if (NSFONT_TRACE) | |
1392 | fprintf (stderr, "%p\tComputing metrics for glyphs in block %d\n", | |
1393 | font_info, block); | |
1394 | ||
1395 | #ifdef NS_IMPL_GNUSTEP | |
1396 | /* not implemented yet (as of startup 0.18), so punt */ | |
1397 | if (numGlyphs == 0) | |
1398 | numGlyphs = 0x10000; | |
1399 | #endif | |
1400 | ||
4d7e6e51 | 1401 | block_input (); |
a68fda4a AR |
1402 | sfont = [font_info->nsfont screenFont]; |
1403 | ||
38182d90 | 1404 | font_info->metrics[block] = xzalloc (0x100 * sizeof (struct font_metrics)); |
a68fda4a | 1405 | if (!(font_info->metrics[block])) |
1088b922 | 1406 | emacs_abort (); |
a68fda4a AR |
1407 | |
1408 | metrics = font_info->metrics[block]; | |
1409 | for (g = block<<8, i =0; i<0x100 && g < numGlyphs; g++, i++, metrics++) | |
1410 | { | |
1411 | float w, lb, rb; | |
1412 | NSRect r = [sfont boundingRectForGlyph: g]; | |
1413 | ||
6e2f42b4 | 1414 | w = max ([sfont advancementForGlyph: g].width, 2.0); |
a68fda4a AR |
1415 | metrics->width = lrint (w); |
1416 | ||
1417 | lb = r.origin.x; | |
1418 | rb = r.size.width - w; | |
1419 | if (lb < 0) | |
1420 | metrics->lbearing = round (lb); | |
1421 | if (font_info->ital) | |
1422 | rb += 0.22 * font_info->height; | |
1423 | metrics->rbearing = lrint (w + rb); | |
1424 | ||
1425 | metrics->descent = r.origin.y < 0 ? -r.origin.y : 0; | |
1426 | /*lrint (hshrink * [sfont ascender] + expand * hd/2); */ | |
1427 | metrics->ascent = r.size.height - metrics->descent; | |
1428 | /*-lrint (hshrink* [sfont descender] - expand * hd/2); */ | |
1429 | } | |
4d7e6e51 | 1430 | unblock_input (); |
a68fda4a AR |
1431 | } |
1432 | ||
1433 | ||
1434 | #ifdef NS_IMPL_COCOA | |
1435 | /* helper for font glyph setup */ | |
1436 | @implementation EmacsGlyphStorage | |
1437 | ||
1438 | - init | |
1439 | { | |
1440 | return [self initWithCapacity: 1024]; | |
1441 | } | |
1442 | ||
1443 | - initWithCapacity: (unsigned long) c | |
1444 | { | |
1445 | self = [super init]; | |
1446 | maxChar = 0; | |
1447 | maxGlyph = 0; | |
1448 | dict = [NSMutableDictionary new]; | |
38182d90 | 1449 | cglyphs = xmalloc (c * sizeof (CGGlyph)); |
a68fda4a AR |
1450 | return self; |
1451 | } | |
1452 | ||
1453 | - (void) dealloc | |
1454 | { | |
1455 | if (attrStr != nil) | |
1456 | [attrStr release]; | |
1457 | [dict release]; | |
1458 | xfree (cglyphs); | |
1459 | [super dealloc]; | |
1460 | } | |
1461 | ||
1462 | - (void) setString: (NSString *)str font: (NSFont *)font | |
1463 | { | |
1464 | [dict setObject: font forKey: NSFontAttributeName]; | |
204ee57f JD |
1465 | if (attrStr != nil) |
1466 | [attrStr release]; | |
a68fda4a AR |
1467 | attrStr = [[NSAttributedString alloc] initWithString: str attributes: dict]; |
1468 | maxChar = [str length]; | |
1469 | maxGlyph = 0; | |
1470 | } | |
1471 | ||
1472 | /* NSGlyphStorage protocol */ | |
e28db5bc | 1473 | - (NSUInteger)layoutOptions |
a68fda4a AR |
1474 | { |
1475 | return 0; | |
1476 | } | |
1477 | ||
1478 | - (NSAttributedString *)attributedString | |
1479 | { | |
1480 | return attrStr; | |
1481 | } | |
1482 | ||
e28db5bc AR |
1483 | - (void)insertGlyphs: (const NSGlyph *)glyphs length: (NSUInteger)length |
1484 | forStartingGlyphAtIndex: (NSUInteger)glyphIndex | |
1485 | characterIndex: (NSUInteger)charIndex | |
a68fda4a AR |
1486 | { |
1487 | len = glyphIndex+length; | |
1488 | for (i =glyphIndex; i<len; i++) | |
1489 | cglyphs[i] = glyphs[i-glyphIndex]; | |
1490 | if (len > maxGlyph) | |
1491 | maxGlyph = len; | |
1492 | } | |
1493 | ||
e28db5bc AR |
1494 | - (void)setIntAttribute: (NSInteger)attributeTag value: (NSInteger)val |
1495 | forGlyphAtIndex: (NSUInteger)glyphIndex | |
a68fda4a AR |
1496 | { |
1497 | return; | |
1498 | } | |
1499 | ||
1500 | @end | |
1501 | #endif /* NS_IMPL_COCOA */ | |
1502 | ||
1503 | ||
1504 | /* Debugging */ | |
1505 | void | |
8840261a | 1506 | ns_dump_glyphstring (struct glyph_string *s) |
a68fda4a AR |
1507 | { |
1508 | int i; | |
1509 | ||
8840261a AR |
1510 | fprintf (stderr, "Glyph string len = %d at (%d, %d) overhang (%d, %d)," |
1511 | "overlap = %d, bg_filled = %d:", | |
a68fda4a AR |
1512 | s->nchars, s->x, s->y, s->left_overhang, s->right_overhang, |
1513 | s->row->overlapping_p, s->background_filled_p); | |
1514 | for (i =0; i<s->nchars; i++) | |
1515 | fprintf (stderr, "%c", s->first_glyph[i].u.ch); | |
1516 | fprintf (stderr, "\n"); | |
1517 | } | |
1518 | ||
1519 | ||
a68fda4a | 1520 | void |
3d608a86 | 1521 | syms_of_nsfont (void) |
a68fda4a AR |
1522 | { |
1523 | nsfont_driver.type = Qns; | |
1524 | register_font_driver (&nsfont_driver, NULL); | |
1525 | DEFSYM (Qapple, "apple"); | |
1526 | DEFSYM (Qroman, "roman"); | |
1527 | DEFSYM (Qmedium, "medium"); | |
fb9d0f5a | 1528 | DEFVAR_LISP ("ns-reg-to-script", Vns_reg_to_script, |
fe7a3057 | 1529 | doc: /* Internal use: maps font registry to Unicode script. */); |
179dad8e CY |
1530 | |
1531 | ascii_printable = NULL; | |
a68fda4a | 1532 | } |