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a68fda4a AR |
1 | /* Font back-end driver for the NeXT/Open/GNUstep and MacOSX window system. |
2 | See font.h | |
76b6f707 | 3 | Copyright (C) 2006, 2007, 2008, 2009 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. */ | |
a68fda4a AR |
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 | ||
4e2f36cf AR |
40 | /* This header is not included from GNUstep's (0.16.0) AppKit.h. */ |
41 | #ifdef NS_IMPL_GNUSTEP | |
42 | #import <AppKit/NSFontDescriptor.h> | |
43 | #endif | |
44 | ||
a68fda4a AR |
45 | #define NSFONT_TRACE 0 |
46 | ||
47 | extern Lisp_Object Qns; | |
48 | extern Lisp_Object Qnormal, Qbold, Qitalic, Qcondensed, Qexpanded; | |
49 | static Lisp_Object Qapple, Qroman, Qmedium; | |
a68fda4a AR |
50 | extern Lisp_Object Qappend; |
51 | extern int ns_antialias_text, ns_use_qd_smoothing; | |
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 | { | |
102 | char *tmp = strdup (SDATA (SYMBOL_NAME (tem))); | |
103 | NSString *family; | |
8840261a AR |
104 | ns_unescape_name (tmp); |
105 | /* For names hard-coded into emacs, like 'helvetica' for splash. */ | |
106 | tmp[0] = toupper (tmp[0]); | |
a68fda4a AR |
107 | family = [NSString stringWithUTF8String: tmp]; |
108 | free (tmp); | |
109 | return family; | |
110 | } | |
111 | } | |
112 | ||
113 | ||
4b7f335c AR |
114 | /* Return 0 if attr not set, else value (which might also be 0). |
115 | On Leopard 0 gets returned even on descriptors where the attribute | |
116 | was never set, so there's no way to distinguish between unspecified | |
117 | and set to not have. Callers should assume 0 means unspecified. */ | |
8840261a AR |
118 | static float |
119 | ns_attribute_fvalue (NSFontDescriptor *fdesc, NSString *trait) | |
120 | { | |
4b7f335c AR |
121 | NSDictionary *tdict = [fdesc objectForKey: NSFontTraitsAttribute]; |
122 | NSNumber *val = [tdict objectForKey: trait]; | |
8840261a AR |
123 | return val == nil ? 0.0 : [val floatValue]; |
124 | } | |
a68fda4a | 125 | |
a68fda4a | 126 | |
8840261a AR |
127 | /* Converts FONT_WEIGHT, FONT_SLANT, FONT_WIDTH, plus family and script/lang |
128 | to NSFont descriptor. Information under extra only needed for matching. */ | |
129 | #define STYLE_REF 100 | |
130 | static NSFontDescriptor | |
131 | *ns_spec_to_descriptor(Lisp_Object font_spec) | |
132 | { | |
133 | NSFontDescriptor *fdesc; | |
134 | NSMutableDictionary *fdAttrs = [NSMutableDictionary new]; | |
135 | NSMutableDictionary *tdict = [NSMutableDictionary new]; | |
136 | NSString *family = ns_get_family (font_spec); | |
137 | float n; | |
138 | ||
139 | /* add each attr in font_spec to fdAttrs.. */ | |
140 | n = min (FONT_WEIGHT_NUMERIC (font_spec), 200); | |
141 | if (n != -1 && n != STYLE_REF) | |
142 | [tdict setObject: [NSNumber numberWithFloat: (n - 100.0) / 100.0] | |
143 | forKey: NSFontWeightTrait]; | |
144 | n = min (FONT_SLANT_NUMERIC (font_spec), 200); | |
145 | if (n != -1 && n != STYLE_REF) | |
146 | [tdict setObject: [NSNumber numberWithFloat: (n - 100.0) / 100.0] | |
147 | forKey: NSFontSlantTrait]; | |
148 | n = min (FONT_WIDTH_NUMERIC (font_spec), 200); | |
149 | if (n > -1 && (n > STYLE_REF + 10 || n < STYLE_REF - 10)) | |
150 | [tdict setObject: [NSNumber numberWithFloat: (n - 100.0) / 100.0] | |
151 | forKey: NSFontWidthTrait]; | |
152 | if ([tdict count] > 0) | |
153 | [fdAttrs setObject: tdict forKey: NSFontTraitsAttribute]; | |
154 | ||
155 | fdesc = [NSFontDescriptor fontDescriptorWithFontAttributes: fdAttrs]; | |
156 | if (family != nil) | |
157 | fdesc = [fdesc fontDescriptorWithFamily: family]; | |
158 | return fdesc; | |
a68fda4a AR |
159 | } |
160 | ||
161 | ||
8840261a | 162 | /* Converts NSFont descriptor to FONT_WEIGHT, FONT_SLANT, FONT_WIDTH, etc.. */ |
a68fda4a | 163 | static Lisp_Object |
8840261a | 164 | ns_descriptor_to_entity (NSFontDescriptor *desc, Lisp_Object extra, char *style) |
a68fda4a | 165 | { |
8840261a AR |
166 | Lisp_Object font_entity = font_make_entity (); |
167 | /* NSString *psName = [desc postscriptName]; */ | |
168 | NSString *family = [desc objectForKey: NSFontFamilyAttribute]; | |
169 | char *escapedFamily = strdup ([family UTF8String]); | |
170 | unsigned int traits = [desc symbolicTraits]; | |
171 | ||
172 | ns_escape_name (escapedFamily); | |
173 | ||
174 | ASET (font_entity, FONT_TYPE_INDEX, Qns); | |
175 | ASET (font_entity, FONT_FOUNDRY_INDEX, Qapple); | |
176 | ASET (font_entity, FONT_FAMILY_INDEX, intern (escapedFamily)); | |
177 | ASET (font_entity, FONT_ADSTYLE_INDEX, style ? intern (style) : Qnil); | |
178 | ASET (font_entity, FONT_REGISTRY_INDEX, Qiso10646_1); | |
179 | ||
180 | FONT_SET_STYLE (font_entity, FONT_WEIGHT_INDEX, | |
181 | traits & NSFontBoldTrait ? Qbold : Qmedium); | |
182 | /* FONT_SET_STYLE (font_entity, FONT_WEIGHT_INDEX, | |
183 | make_number (100 + 100 | |
184 | * ns_attribute_fvalue (desc, NSFontWeightTrait)));*/ | |
185 | FONT_SET_STYLE (font_entity, FONT_SLANT_INDEX, | |
186 | traits & NSFontItalicTrait ? Qitalic : Qnormal); | |
187 | /* FONT_SET_STYLE (font_entity, FONT_SLANT_INDEX, | |
188 | make_number (100 + 100 | |
189 | * ns_attribute_fvalue (desc, NSFontSlantTrait)));*/ | |
190 | FONT_SET_STYLE (font_entity, FONT_WIDTH_INDEX, | |
191 | traits & NSFontCondensedTrait ? Qcondensed : | |
192 | traits & NSFontExpandedTrait ? Qexpanded : Qnormal); | |
193 | /* FONT_SET_STYLE (font_entity, FONT_WIDTH_INDEX, | |
194 | make_number (100 + 100 | |
195 | * ns_attribute_fvalue (desc, NSFontWidthTrait)));*/ | |
196 | ||
197 | ASET (font_entity, FONT_SIZE_INDEX, make_number (0)); | |
198 | ASET (font_entity, FONT_AVGWIDTH_INDEX, make_number (0)); | |
199 | ASET (font_entity, FONT_SPACING_INDEX, | |
200 | make_number([desc symbolicTraits] & NSFontMonoSpaceTrait | |
201 | ? FONT_SPACING_MONO : FONT_SPACING_PROPORTIONAL)); | |
202 | ||
203 | ASET (font_entity, FONT_EXTRA_INDEX, extra); | |
204 | ASET (font_entity, FONT_OBJLIST_INDEX, Qnil); | |
205 | ||
206 | if (NSFONT_TRACE) | |
207 | { | |
208 | fprintf (stderr, "created font_entity:\n "); | |
209 | debug_print (font_entity); | |
210 | } | |
a68fda4a | 211 | |
8840261a AR |
212 | free (escapedFamily); |
213 | return font_entity; | |
214 | } | |
a68fda4a | 215 | |
8840261a AR |
216 | |
217 | /* Default font entity. */ | |
218 | static Lisp_Object | |
219 | ns_fallback_entity () | |
220 | { | |
221 | return ns_descriptor_to_entity ([[NSFont userFixedPitchFontOfSize: 0] | |
222 | fontDescriptor], Qnil, NULL); | |
a68fda4a AR |
223 | } |
224 | ||
225 | ||
8840261a AR |
226 | /* Utility: get width of a char c in screen font sfont */ |
227 | static float | |
228 | ns_char_width (NSFont *sfont, int c) | |
a68fda4a | 229 | { |
8840261a AR |
230 | float w; |
231 | NSString *cstr = [NSString stringWithFormat: @"%c", c]; | |
232 | #ifdef NS_IMPL_COCOA | |
233 | NSGlyph glyph = [sfont glyphWithName: cstr]; | |
234 | if (glyph) | |
235 | { | |
236 | float w = [sfont advancementForGlyph: glyph].width; | |
237 | if (w >= 1.5) | |
238 | return w; | |
239 | } | |
240 | #endif | |
241 | w = [sfont widthOfString: cstr]; | |
242 | return max (w, 2.0); | |
243 | } | |
244 | ||
245 | ||
246 | /* Return whether set1 covers set2 to a reasonable extent given by pct. | |
247 | We check, out of each 16 unicode char range containing chars in set2, | |
248 | whether at least one character is present in set1. | |
249 | This must be true for pct of the pairs to consider it covering. */ | |
250 | static BOOL | |
251 | ns_charset_covers(NSCharacterSet *set1, NSCharacterSet *set2, float pct) | |
252 | { | |
253 | const unsigned short *bytes1 = [[set1 bitmapRepresentation] bytes]; | |
254 | const unsigned short *bytes2 = [[set2 bitmapRepresentation] bytes]; | |
255 | int i, off = 0, tot = 0; | |
256 | ||
257 | for (i=0; i<4096; i++, bytes1++, bytes2++) | |
258 | if (*bytes2) | |
259 | { | |
260 | tot++; | |
261 | if (*bytes1 == 0) // *bytes1 & *bytes2 != *bytes2 | |
262 | off++; | |
263 | } | |
264 | //fprintf(stderr, "off = %d\ttot = %d\n", off,tot); | |
265 | return (float)off / tot < 1.0 - pct; | |
266 | } | |
267 | ||
268 | ||
269 | /* Convert :lang property to a script. Use of :lang property by font backend | |
270 | seems to be limited for now (2009/05) to ja, zh, and ko. */ | |
271 | static NSString | |
272 | *ns_lang_to_script (Lisp_Object lang) | |
273 | { | |
274 | if (!strcmp (SDATA (SYMBOL_NAME (lang)), "ja")) | |
275 | return @"han"; | |
276 | /* NOTE: ja given for any hanzi that's also a kanji, but Chinese fonts | |
277 | have more characters. */ | |
278 | else if (!strcmp (SDATA (SYMBOL_NAME (lang)), "zh")) | |
279 | return @"han"; | |
280 | else if (!strcmp (SDATA (SYMBOL_NAME (lang)), "ko")) | |
281 | return @"hangul"; | |
282 | else | |
283 | return @""; | |
284 | } | |
285 | ||
286 | ||
287 | /* Convert OTF 4-letter script code to emacs script name. (Why can't | |
288 | everyone just use some standard unicode names for these?) */ | |
289 | static NSString | |
290 | *ns_otf_to_script (Lisp_Object otf) | |
291 | { | |
292 | Lisp_Object script = assq_no_quit (XCAR (otf), Votf_script_alist); | |
293 | return CONSP (script) | |
294 | ? [NSString stringWithUTF8String: SDATA (SYMBOL_NAME XCDR ((script)))] | |
295 | : @""; | |
296 | } | |
297 | ||
298 | ||
299 | /* Searches the :script, :lang, and :otf extra-bundle properties of the spec | |
300 | for something that can be mapped to a unicode script. Empty string returned | |
301 | if no script spec found. | |
302 | TODO: Eventually registry / encoding should be checked and mapped, but for | |
303 | now the font backend will try script/lang/otf if registry fails, so it is | |
304 | not needed. */ | |
305 | static NSString | |
306 | *ns_get_req_script (Lisp_Object font_spec) | |
307 | { | |
308 | Lisp_Object extra = AREF (font_spec, FONT_EXTRA_INDEX); | |
309 | ||
310 | for ( ; CONSP (extra); extra = XCDR (extra)) | |
311 | { | |
312 | Lisp_Object tmp = XCAR (extra); | |
313 | if (CONSP (tmp)) | |
314 | { | |
315 | Lisp_Object key = XCAR (tmp), val = XCDR (tmp); | |
316 | if (EQ (key, QCscript) && SYMBOLP (val)) | |
317 | return [NSString stringWithUTF8String: | |
318 | SDATA (SYMBOL_NAME (val))]; | |
319 | if (EQ (key, QClang) && SYMBOLP (val)) | |
320 | return ns_lang_to_script (val); | |
321 | if (EQ (key, QCotf) && CONSP (val) && SYMBOLP (XCAR (val))) | |
322 | return ns_otf_to_script (val); | |
323 | } | |
324 | } | |
325 | return @""; | |
326 | } | |
327 | ||
328 | ||
329 | /* This small function is static in fontset.c. If it can be made public for | |
330 | all ports, remove this, but otherwise it doesn't seem worth the ifdefs. */ | |
331 | static void | |
332 | accumulate_script_ranges (Lisp_Object arg, Lisp_Object range, Lisp_Object val) | |
333 | { | |
334 | if (EQ (XCAR (arg), val)) | |
335 | { | |
336 | if (CONSP (range)) | |
337 | XSETCDR (arg, Fcons (Fcons (XCAR (range), XCDR (range)), XCDR (arg))); | |
338 | else | |
339 | XSETCDR (arg, Fcons (Fcons (range, range), XCDR (arg))); | |
340 | } | |
341 | } | |
342 | ||
343 | ||
344 | /* Use the unicode range information in Vchar_script_table to convert a script | |
345 | name into an NSCharacterSet. */ | |
346 | static NSCharacterSet | |
347 | *ns_script_to_charset (NSString *scriptName) | |
348 | { | |
349 | NSMutableCharacterSet *charset = [NSMutableCharacterSet new]; | |
350 | Lisp_Object script = intern ([scriptName UTF8String]); | |
351 | Lisp_Object script_list = XCHAR_TABLE (Vchar_script_table)->extras[0]; | |
352 | ||
353 | if (! NILP (Fmemq (script, script_list))) | |
354 | { | |
355 | Lisp_Object ranges, range_list; | |
356 | ||
357 | ranges = Fcons (script, Qnil); | |
358 | map_char_table (accumulate_script_ranges, Qnil, Vchar_script_table, | |
359 | ranges); | |
360 | range_list = Fnreverse (XCDR (ranges)); | |
361 | if (! NILP (range_list)) | |
362 | { | |
363 | for (; CONSP (range_list); range_list = XCDR (range_list)) | |
364 | { | |
365 | int start = XINT (XCAR (XCAR (range_list))); | |
366 | int end = XINT (XCDR (XCAR (range_list))); | |
367 | if (NSFONT_TRACE) | |
368 | debug_print (XCAR (range_list)); | |
369 | if (end < 0x10000) | |
370 | [charset addCharactersInRange: | |
371 | NSMakeRange (start, end-start)]; | |
372 | } | |
373 | } | |
374 | } | |
375 | return charset; | |
a68fda4a AR |
376 | } |
377 | ||
378 | ||
8840261a AR |
379 | /* Return an array of font families containing characters for the given |
380 | script, for the given coverage criterion, including at least LastResort. | |
381 | Results are cached by script for faster access. | |
382 | If none are found, we reduce the percentage and try again, until 5%. | |
383 | This provides a font with at least some characters if such can be found. | |
384 | We don't use isSupersetOfSet: because (a) it doesn't work on Tiger, and | |
385 | (b) need approximate match as fonts covering full unicode ranges are rare. */ | |
386 | static NSSet | |
387 | *ns_get_covering_families (NSString *script, float pct) | |
388 | { | |
389 | static NSMutableDictionary *scriptToFamilies = nil; | |
390 | NSMutableSet *families; | |
391 | ||
392 | if (NSFONT_TRACE) | |
393 | NSLog(@"Request covering families for script: '%@'", script); | |
394 | ||
395 | if (scriptToFamilies == nil) | |
e41820ee | 396 | scriptToFamilies = [[NSMutableDictionary alloc] init]; |
8840261a AR |
397 | |
398 | if ((families = [scriptToFamilies objectForKey: script]) == nil) | |
399 | { | |
400 | NSFontManager *fontMgr = [NSFontManager sharedFontManager]; | |
401 | NSArray *allFamilies = [fontMgr availableFontFamilies]; | |
402 | ||
403 | if ([script length] == 0) | |
404 | families = [NSMutableSet setWithArray: allFamilies]; | |
405 | else | |
406 | { | |
407 | NSCharacterSet *charset = ns_script_to_charset (script); | |
408 | NSString *family; | |
409 | families = [NSMutableSet setWithCapacity: 10]; | |
410 | while (1) | |
411 | { | |
412 | NSEnumerator *allFamiliesEnum = [allFamilies objectEnumerator]; | |
413 | while (family = [allFamiliesEnum nextObject]) | |
414 | { | |
415 | NSCharacterSet *fset = [[fontMgr fontWithFamily: family | |
416 | traits: 0 weight: 5 size: 12.0] coveredCharacterSet]; | |
417 | /* Some fonts on OS X, maybe many on GNUstep, return nil. */ | |
418 | if (fset == nil) | |
419 | fset = [NSCharacterSet characterSetWithRange: | |
420 | NSMakeRange (0, 127)]; | |
421 | if (ns_charset_covers(fset, charset, pct)) | |
422 | [families addObject: family]; | |
423 | } | |
424 | pct -= 0.2; | |
425 | if ([families count] > 0 || pct < 0.05) | |
426 | break; | |
427 | } | |
428 | } | |
429 | #ifdef NS_IMPL_COCOA | |
430 | if ([families count] == 0) | |
431 | [families addObject: @"LastResort"]; | |
432 | #endif | |
433 | [scriptToFamilies setObject: families forKey: script]; | |
434 | } | |
435 | ||
436 | if (NSFONT_TRACE) | |
437 | NSLog(@" returning %d families", [families count]); | |
438 | return families; | |
439 | } | |
440 | ||
441 | ||
442 | /* Implementation for list() and match(). List() can return nil, match() | |
443 | must return something. Strategy is to drop family name from attribute | |
444 | matching set for match. */ | |
a68fda4a | 445 | static Lisp_Object |
8840261a | 446 | ns_findfonts (Lisp_Object font_spec, BOOL isMatch) |
a68fda4a | 447 | { |
8840261a AR |
448 | Lisp_Object tem, list = Qnil; |
449 | NSFontDescriptor *fdesc, *desc; | |
450 | NSMutableSet *fkeys; | |
451 | NSArray *matchingDescs; | |
452 | NSEnumerator *dEnum; | |
453 | NSString *family; | |
454 | NSSet *cFamilies; | |
455 | BOOL foundItal = NO; | |
456 | ||
457 | if (NSFONT_TRACE) | |
458 | { | |
459 | fprintf (stderr, "nsfont: %s for fontspec:\n ", | |
460 | (isMatch ? "match" : "list")); | |
461 | debug_print (font_spec); | |
462 | } | |
463 | ||
464 | /* If has non-unicode registry, give up. */ | |
465 | tem = AREF (font_spec, FONT_REGISTRY_INDEX); | |
466 | if (! NILP (tem) && !EQ (tem, Qiso10646_1) && !EQ (tem, Qunicode_bmp)) | |
1395c6f5 | 467 | return isMatch ? Fcons (ns_fallback_entity (), list) : Qnil; |
8840261a AR |
468 | |
469 | cFamilies = ns_get_covering_families (ns_get_req_script (font_spec), 0.90); | |
470 | ||
471 | fdesc = ns_spec_to_descriptor (font_spec); | |
472 | fkeys = [NSMutableSet setWithArray: [[fdesc fontAttributes] allKeys]]; | |
473 | if (isMatch) | |
474 | [fkeys removeObject: NSFontFamilyAttribute]; | |
475 | ||
476 | matchingDescs = [fdesc matchingFontDescriptorsWithMandatoryKeys: fkeys]; | |
477 | if (NSFONT_TRACE) | |
478 | NSLog(@"Got desc %@ and found %d matching fonts from it: ", fdesc, | |
479 | [matchingDescs count]); | |
480 | ||
481 | for (dEnum = [matchingDescs objectEnumerator]; desc = [dEnum nextObject]; ) | |
482 | { | |
483 | if (![cFamilies containsObject: | |
484 | [desc objectForKey: NSFontFamilyAttribute]]) | |
485 | continue; | |
486 | list = Fcons (ns_descriptor_to_entity (desc, | |
487 | AREF (font_spec, FONT_EXTRA_INDEX), | |
488 | NULL), list); | |
e4e9c24b | 489 | if (fabs (ns_attribute_fvalue (desc, NSFontSlantTrait)) > 0.05) |
8840261a AR |
490 | foundItal = YES; |
491 | } | |
492 | ||
493 | /* Add synthItal member if needed. */ | |
494 | family = [fdesc objectForKey: NSFontFamilyAttribute]; | |
4b7f335c | 495 | if (family != nil && !foundItal && XINT (Flength (list)) > 0) |
8840261a AR |
496 | { |
497 | NSFontDescriptor *sDesc = [[[NSFontDescriptor new] | |
498 | fontDescriptorWithSymbolicTraits: NSFontItalicTrait] | |
499 | fontDescriptorWithFamily: family]; | |
500 | list = Fcons (ns_descriptor_to_entity (sDesc, | |
501 | AREF (font_spec, FONT_EXTRA_INDEX), | |
502 | "synthItal"), list); | |
503 | } | |
504 | ||
1395c6f5 AR |
505 | /* Return something if was a match and nothing found. */ |
506 | if (isMatch && XINT (Flength (list)) == 0) | |
507 | list = Fcons (ns_fallback_entity (), Qnil); | |
508 | ||
8840261a AR |
509 | if (NSFONT_TRACE) |
510 | fprintf (stderr, " Returning %d entities.\n", XINT (Flength (list))); | |
511 | ||
512 | return list; | |
a68fda4a AR |
513 | } |
514 | ||
515 | ||
8840261a | 516 | |
a68fda4a AR |
517 | /* ========================================================================== |
518 | ||
519 | Font driver implementation | |
520 | ||
521 | ========================================================================== */ | |
522 | ||
8840261a | 523 | |
a68fda4a AR |
524 | static Lisp_Object nsfont_get_cache (FRAME_PTR frame); |
525 | static Lisp_Object nsfont_list (Lisp_Object frame, Lisp_Object font_spec); | |
526 | static Lisp_Object nsfont_match (Lisp_Object frame, Lisp_Object font_spec); | |
527 | static Lisp_Object nsfont_list_family (Lisp_Object frame); | |
528 | static Lisp_Object nsfont_open (FRAME_PTR f, Lisp_Object font_entity, | |
529 | int pixel_size); | |
530 | static void nsfont_close (FRAME_PTR f, struct font *font); | |
531 | static int nsfont_has_char (Lisp_Object entity, int c); | |
532 | static unsigned int nsfont_encode_char (struct font *font, int c); | |
533 | static int nsfont_text_extents (struct font *font, unsigned int *code, | |
534 | int nglyphs, struct font_metrics *metrics); | |
535 | static int nsfont_draw (struct glyph_string *s, int from, int to, int x, int y, | |
536 | int with_background); | |
537 | ||
538 | struct font_driver nsfont_driver = | |
539 | { | |
facfbbbd | 540 | 0, /* Qns */ |
a68fda4a AR |
541 | 1, /* case sensitive */ |
542 | nsfont_get_cache, | |
543 | nsfont_list, | |
544 | nsfont_match, | |
545 | nsfont_list_family, | |
546 | NULL, /*free_entity */ | |
547 | nsfont_open, | |
548 | nsfont_close, | |
549 | NULL, /* prepare_face */ | |
550 | NULL, /* done_face */ | |
551 | nsfont_has_char, | |
552 | nsfont_encode_char, | |
553 | nsfont_text_extents, | |
554 | nsfont_draw, | |
555 | /* excluded: get_bitmap, free_bitmap, get_outline, free_outline, | |
556 | anchor_point, otf_capability, otf_driver, | |
557 | start_for_frame, end_for_frame, shape */ | |
558 | }; | |
559 | ||
560 | ||
561 | /* Return a cache of font-entities on FRAME. The cache must be a | |
562 | cons whose cdr part is the actual cache area. */ | |
563 | static Lisp_Object | |
564 | nsfont_get_cache (FRAME_PTR frame) | |
565 | { | |
566 | Display_Info *dpyinfo = FRAME_NS_DISPLAY_INFO (frame); | |
567 | return (dpyinfo->name_list_element); | |
568 | } | |
569 | ||
570 | ||
8840261a AR |
571 | /* List fonts exactly matching with FONT_SPEC on FRAME. The value is a |
572 | **list** of font-entities. This and match () are sole APIs that allocate | |
573 | font-entities. Properties to be considered (2009/05/19) are: | |
574 | regular: foundry, family, adstyle, registry | |
575 | extended: script, lang, otf | |
576 | "Extended" properties are not part of the vector but get stored as | |
577 | lisp properties under FONT_EXTRA_INDEX. | |
578 | ||
579 | The returned entities should have type set (to 'ns), plus the following: | |
580 | foundry, family, adstyle, registry, | |
581 | weight, slant, width, size (0 if scalable), | |
582 | dpi, spacing, avgwidth (0 if scalable) */ | |
a68fda4a AR |
583 | static Lisp_Object |
584 | nsfont_list (Lisp_Object frame, Lisp_Object font_spec) | |
585 | { | |
8840261a | 586 | return ns_findfonts (font_spec, NO); |
a68fda4a AR |
587 | } |
588 | ||
589 | ||
590 | /* Return a font entity most closely maching with FONT_SPEC on | |
591 | FRAME. The closeness is determined by the font backend, thus | |
8840261a AR |
592 | `face-font-selection-order' is ignored here. |
593 | Properties to be considered are same as for list(). */ | |
a68fda4a AR |
594 | static Lisp_Object |
595 | nsfont_match (Lisp_Object frame, Lisp_Object font_spec) | |
596 | { | |
8840261a | 597 | return ns_findfonts(font_spec, YES); |
a68fda4a AR |
598 | } |
599 | ||
600 | ||
601 | /* List available families. The value is a list of family names | |
602 | (symbols). */ | |
603 | static Lisp_Object | |
604 | nsfont_list_family (Lisp_Object frame) | |
605 | { | |
606 | Lisp_Object list = Qnil; | |
607 | NSEnumerator *families = | |
608 | [[[NSFontManager sharedFontManager] availableFontFamilies] | |
609 | objectEnumerator]; | |
610 | NSString *family; | |
611 | while (family = [families nextObject]) | |
612 | list = Fcons (intern ([family UTF8String]), list); | |
df2142db | 613 | /* FIXME: escape the name? */ |
a68fda4a AR |
614 | |
615 | if (NSFONT_TRACE) | |
616 | fprintf (stderr, "nsfont: list families returning %d entries\n", | |
617 | XINT (Flength (list))); | |
618 | ||
619 | return list; | |
620 | } | |
621 | ||
622 | ||
a68fda4a AR |
623 | /* Open a font specified by FONT_ENTITY on frame F. If the font is |
624 | scalable, open it with PIXEL_SIZE. */ | |
625 | static Lisp_Object | |
626 | nsfont_open (FRAME_PTR f, Lisp_Object font_entity, int pixel_size) | |
627 | { | |
628 | BOOL synthItal; | |
8840261a | 629 | unsigned int traits = 0; |
a68fda4a AR |
630 | struct nsfont_info *font_info; |
631 | struct font *font; | |
8840261a | 632 | NSFontDescriptor *fontDesc = ns_spec_to_descriptor (font_entity); |
a68fda4a AR |
633 | NSFontManager *fontMgr = [NSFontManager sharedFontManager]; |
634 | NSString *family; | |
635 | NSFont *nsfont, *sfont; | |
636 | Lisp_Object tem; | |
637 | NSRect brect; | |
638 | Lisp_Object font_object; | |
639 | int i; | |
640 | int fixLeopardBug; | |
a68fda4a | 641 | static NSMutableDictionary *fontCache = nil; |
8d0e382e | 642 | NSNumber *cached; |
a68fda4a AR |
643 | |
644 | /* 2008/03/08: The same font may end up being requested for different | |
645 | entities, due to small differences in numeric values or other issues, | |
646 | or for different copies of the same entity. Therefore we cache to | |
647 | avoid creating multiple struct font objects (with metrics cache, etc.) | |
8840261a | 648 | for the same NSFont object. */ |
a68fda4a AR |
649 | if (fontCache == nil) |
650 | fontCache = [[NSMutableDictionary alloc] init]; | |
a68fda4a AR |
651 | |
652 | if (NSFONT_TRACE) | |
653 | { | |
654 | fprintf (stderr, "nsfont: open size %d of fontentity:\n ", pixel_size); | |
655 | debug_print (font_entity); | |
656 | } | |
657 | ||
658 | if (pixel_size <= 0) | |
659 | { | |
660 | /* try to get it out of frame params */ | |
661 | Lisp_Object tem = get_frame_param (f, Qfontsize); | |
662 | pixel_size = NILP (tem) ? 0 : XFASTINT (tem); | |
663 | } | |
664 | ||
665 | tem = AREF (font_entity, FONT_ADSTYLE_INDEX); | |
666 | synthItal = !NILP (tem) && !strncmp ("synthItal", SDATA (SYMBOL_NAME (tem)), | |
667 | 9); | |
8840261a | 668 | family = ns_get_family (font_entity); |
e4e9c24b AR |
669 | /* Should be > 0.23 as some font descriptors (e.g. Terminus) set to that |
670 | when setting family in ns_spec_to_descriptor(). */ | |
671 | if (ns_attribute_fvalue (fontDesc, NSFontWeightTrait) > 0.50) | |
8840261a | 672 | traits |= NSBoldFontMask; |
e4e9c24b | 673 | if (fabs (ns_attribute_fvalue (fontDesc, NSFontSlantTrait) > 0.05)) |
8840261a | 674 | traits |= NSItalicFontMask; |
a68fda4a | 675 | |
8840261a | 676 | /* see http://cocoadev.com/forums/comments.php?DiscussionID=74 */ |
a68fda4a AR |
677 | fixLeopardBug = traits & NSBoldFontMask ? 10 : 5; |
678 | nsfont = [fontMgr fontWithFamily: family | |
679 | traits: traits weight: fixLeopardBug | |
680 | size: pixel_size]; | |
681 | /* if didn't find, try synthetic italic */ | |
8840261a | 682 | if (nsfont == nil && synthItal) |
a68fda4a AR |
683 | { |
684 | nsfont = [fontMgr fontWithFamily: family | |
685 | traits: traits & ~NSItalicFontMask | |
686 | weight: fixLeopardBug size: pixel_size]; | |
687 | } | |
688 | #ifdef NS_IMPL_COCOA | |
689 | /* LastResort not really a family */ | |
690 | if (nsfont == nil && [@"LastResort" isEqualToString: family]) | |
a68fda4a | 691 | nsfont = [NSFont fontWithName: @"LastResort" size: pixel_size]; |
a68fda4a AR |
692 | #endif |
693 | ||
694 | if (nsfont == nil) | |
695 | { | |
696 | message_with_string ("*** Warning: font in family '%s' not found", | |
697 | build_string ([family UTF8String]), 1); | |
698 | nsfont = [NSFont userFixedPitchFontOfSize: pixel_size]; | |
a68fda4a AR |
699 | } |
700 | ||
8d0e382e AR |
701 | if (NSFONT_TRACE) |
702 | NSLog (@"%@\n", nsfont); | |
1bc98b35 | 703 | |
8d0e382e AR |
704 | /* Check the cache */ |
705 | cached = [fontCache objectForKey: nsfont]; | |
706 | if (cached != nil && !synthItal) | |
707 | { | |
708 | if (NSFONT_TRACE) | |
709 | fprintf(stderr, "*** nsfont_open CACHE HIT!\n"); | |
8840261a | 710 | /* FIXME: Cast from (unsigned long) to Lisp_Object. */ |
86fa089e SM |
711 | XHASH (font_object) = [cached unsignedLongValue]; |
712 | return font_object; | |
8d0e382e AR |
713 | } |
714 | else | |
715 | { | |
716 | font_object = font_make_object (VECSIZE (struct nsfont_info), | |
717 | font_entity, pixel_size); | |
718 | if (!synthItal) | |
8840261a AR |
719 | [fontCache setObject: [NSNumber numberWithUnsignedLong: |
720 | (unsigned long) XHASH (font_object)] | |
721 | forKey: nsfont]; | |
8d0e382e AR |
722 | } |
723 | ||
724 | font_info = (struct nsfont_info *) XFONT_OBJECT (font_object); | |
8840261a | 725 | font = (struct font *) font_info; |
8d0e382e AR |
726 | if (!font) |
727 | return Qnil; /* FIXME: other terms do, but return Qnil causes segfault */ | |
a68fda4a | 728 | |
15034960 | 729 | font_info->glyphs = (unsigned short **) |
a68fda4a | 730 | xmalloc (0x100 * sizeof (unsigned short *)); |
15034960 | 731 | font_info->metrics = (struct font_metrics **) |
a68fda4a AR |
732 | xmalloc (0x100 * sizeof (struct font_metrics *)); |
733 | if (!font_info->glyphs || !font_info->metrics) | |
facfbbbd | 734 | return Qnil; |
a68fda4a AR |
735 | bzero (font_info->glyphs, 0x100 * sizeof (unsigned short *)); |
736 | bzero (font_info->metrics, 0x100 * sizeof (struct font_metrics *)); | |
737 | ||
8d0e382e | 738 | BLOCK_INPUT; |
a68fda4a AR |
739 | |
740 | /* for metrics */ | |
741 | sfont = [nsfont screenFont]; | |
742 | if (sfont == nil) | |
743 | sfont = nsfont; | |
744 | ||
745 | /* non-metric backend font struct fields */ | |
746 | font = (struct font *) font_info; | |
747 | font->pixel_size = [sfont pointSize]; | |
748 | font->driver = &nsfont_driver; | |
749 | font->encoding_type = FONT_ENCODING_NOT_DECIDED; | |
750 | font->encoding_charset = -1; | |
751 | font->repertory_charset = -1; | |
752 | font->default_ascent = 0; | |
753 | font->vertical_centering = 0; | |
754 | font->baseline_offset = 0; | |
755 | font->relative_compose = 0; | |
756 | font->font_encoder = NULL; | |
757 | ||
a68fda4a AR |
758 | font->props[FONT_FORMAT_INDEX] = Qns; |
759 | font->props[FONT_FILE_INDEX] = Qnil; | |
760 | ||
761 | { | |
7fa87f63 | 762 | double expand, hshrink; |
a68fda4a AR |
763 | float full_height, min_height, hd; |
764 | const char *fontName = [[nsfont fontName] UTF8String]; | |
765 | int len = strlen (fontName); | |
766 | ||
767 | #ifdef NS_IMPL_GNUSTEP | |
768 | font_info->nsfont = sfont; | |
769 | #else | |
770 | font_info->nsfont = nsfont; | |
771 | #endif | |
772 | [font_info->nsfont retain]; | |
773 | ||
774 | /* set up ns_font (defined in nsgui.h) */ | |
8840261a AR |
775 | font_info->name = (char *)xmalloc (strlen (fontName) + 1); |
776 | bcopy (fontName, font_info->name, strlen (fontName) + 1); | |
a68fda4a AR |
777 | font_info->bold = [fontMgr traitsOfFont: nsfont] & NSBoldFontMask; |
778 | font_info->ital = | |
779 | synthItal || ([fontMgr traitsOfFont: nsfont] & NSItalicFontMask); | |
780 | ||
781 | /* Metrics etc.; some fonts return an unusually large max advance, so we | |
782 | only use it for fonts that have wide characters. */ | |
783 | font_info->width = ([sfont numberOfGlyphs] > 2000) ? | |
8840261a | 784 | [sfont maximumAdvancement].width : ns_char_width (sfont, '0'); |
a68fda4a AR |
785 | |
786 | brect = [sfont boundingRectForFont]; | |
787 | full_height = brect.size.height; | |
788 | min_height = [sfont ascender] - [sfont descender]; | |
789 | hd = full_height - min_height; | |
790 | ||
c6c62e78 | 791 | /* standard height, similar to Carbon. Emacs.app: was 0.5 by default. */ |
7fa87f63 | 792 | expand = 0.0; |
c6c62e78 | 793 | hshrink = 1.0; |
a68fda4a | 794 | |
a68fda4a AR |
795 | font_info->underpos = 2; /*[sfont underlinePosition] is often clipped out */ |
796 | font_info->underwidth = [sfont underlineThickness]; | |
797 | font_info->size = font->pixel_size; | |
798 | font_info->voffset = lrint (hshrink * [sfont ascender] + expand * hd / 2); | |
799 | ||
800 | /* max bounds */ | |
801 | font_info->max_bounds.ascent = | |
802 | lrint (hshrink * [sfont ascender] + expand * hd/2); | |
803 | font_info->max_bounds.descent = | |
804 | -lrint (hshrink* [sfont descender] - expand*hd/2); | |
805 | font_info->height = | |
806 | font_info->max_bounds.ascent + font_info->max_bounds.descent; | |
807 | font_info->max_bounds.width = lrint (font_info->width); | |
808 | font_info->max_bounds.lbearing = lrint (brect.origin.x); | |
809 | font_info->max_bounds.rbearing = | |
810 | lrint (brect.size.width - font_info->width); | |
a68fda4a AR |
811 | |
812 | #ifdef NS_IMPL_COCOA | |
813 | /* set up synthItal and the CG font */ | |
814 | font_info->synthItal = synthItal; | |
815 | { | |
816 | ATSFontRef atsFont = ATSFontFindFromPostScriptName | |
817 | ((CFStringRef)[nsfont fontName], kATSOptionFlagsDefault); | |
818 | ||
819 | if (atsFont == kATSFontRefUnspecified) | |
820 | { | |
821 | /* see if we can get it by dropping italic (then synthesizing) */ | |
822 | atsFont = ATSFontFindFromPostScriptName ((CFStringRef) | |
823 | [[fontMgr convertFont: nsfont toNotHaveTrait: NSItalicFontMask] | |
824 | fontName], kATSOptionFlagsDefault); | |
825 | if (atsFont != kATSFontRefUnspecified) | |
826 | font_info->synthItal = YES; | |
827 | else | |
828 | { | |
829 | /* last resort fallback */ | |
830 | atsFont = ATSFontFindFromPostScriptName | |
831 | ((CFStringRef)@"Monaco", kATSOptionFlagsDefault); | |
832 | } | |
833 | } | |
834 | font_info->cgfont = CGFontCreateWithPlatformFont ((void*)&atsFont); | |
835 | } | |
836 | #endif | |
837 | ||
838 | /* set up metrics portion of font struct */ | |
839 | font->ascent = [sfont ascender]; | |
840 | font->descent = -[sfont descender]; | |
df2142db | 841 | font->min_width = [sfont widthOfString: @"|"]; /* FIXME */ |
8840261a | 842 | font->space_width = lrint (ns_char_width (sfont, ' ')); |
a68fda4a AR |
843 | font->average_width = lrint (font_info->width); |
844 | font->max_width = lrint (font_info->max_bounds.width); | |
845 | font->height = lrint (font_info->height); | |
846 | font->underline_position = lrint (font_info->underpos); | |
847 | font->underline_thickness = lrint (font_info->underwidth); | |
848 | ||
849 | font->props[FONT_NAME_INDEX] = Ffont_xlfd_name (font_object, Qnil); | |
850 | font->props[FONT_FULLNAME_INDEX] = | |
851 | make_unibyte_string (font_info->name, strlen (font_info->name)); | |
852 | } | |
853 | UNBLOCK_INPUT; | |
854 | ||
855 | return font_object; | |
856 | } | |
857 | ||
858 | ||
859 | /* Close FONT on frame F. */ | |
860 | static void | |
861 | nsfont_close (FRAME_PTR f, struct font *font) | |
862 | { | |
863 | struct nsfont_info *font_info = (struct nsfont_info *)font; | |
864 | int i; | |
865 | ||
df2142db | 866 | /* FIXME: this occurs apparently due to same failure to detect same font |
8840261a | 867 | that causes need for cache in nsfont_open () */ |
a68fda4a AR |
868 | if (!font_info) |
869 | return; | |
870 | ||
871 | for (i =0; i<0x100; i++) | |
872 | { | |
5f445726 JM |
873 | xfree (font_info->glyphs[i]); |
874 | xfree (font_info->metrics[i]); | |
a68fda4a AR |
875 | } |
876 | [font_info->nsfont release]; | |
877 | #ifdef NS_IMPL_COCOA | |
8840261a | 878 | CGFontRelease (font_info->cgfont); |
a68fda4a | 879 | #endif |
8840261a AR |
880 | xfree (font_info->name); |
881 | xfree (font_info); | |
a68fda4a AR |
882 | } |
883 | ||
884 | ||
885 | /* If FONT_ENTITY has a glyph for character C (Unicode code point), | |
886 | return 1. If not, return 0. If a font must be opened to check | |
887 | it, return -1. */ | |
888 | static int | |
889 | nsfont_has_char (Lisp_Object entity, int c) | |
890 | { | |
891 | return -1; | |
892 | } | |
893 | ||
894 | ||
895 | /* Return a glyph code of FONT for character C (Unicode code point). | |
896 | If FONT doesn't have such a glyph, return FONT_INVALID_CODE. */ | |
897 | static unsigned int | |
898 | nsfont_encode_char (struct font *font, int c) | |
899 | { | |
900 | struct nsfont_info *font_info = (struct nsfont_info *)font; | |
901 | unsigned char high = (c & 0xff00) >> 8, low = c & 0x00ff; | |
902 | unsigned short g; | |
903 | ||
904 | if (c > 0xFFFF) | |
905 | return FONT_INVALID_CODE; | |
906 | ||
907 | /* did we already cache this block? */ | |
908 | if (!font_info->glyphs[high]) | |
909 | ns_uni_to_glyphs (font_info, high); | |
910 | ||
911 | g = font_info->glyphs[high][low]; | |
a68fda4a AR |
912 | return g == 0xFFFF ? FONT_INVALID_CODE : g; |
913 | } | |
914 | ||
915 | ||
916 | /* Perform the size computation of glyphs of FONT and fill in members | |
917 | of METRICS. The glyphs are specified by their glyph codes in | |
918 | CODE (length NGLYPHS). */ | |
919 | static int | |
920 | nsfont_text_extents (struct font *font, unsigned int *code, int nglyphs, | |
921 | struct font_metrics *metrics) | |
922 | { | |
923 | struct nsfont_info *font_info = (struct nsfont_info *)font; | |
924 | struct font_metrics *pcm; | |
925 | unsigned char high, low; | |
926 | int totalWidth = 0; | |
927 | int i; | |
928 | ||
929 | bzero (metrics, sizeof (struct font_metrics)); | |
930 | ||
931 | for (i =0; i<nglyphs; i++) | |
932 | { | |
933 | /* get metrics for this glyph, filling cache if need be */ | |
df2142db AR |
934 | /* TODO: get metrics for whole string from an NSLayoutManager |
935 | (if not too slow) */ | |
a68fda4a AR |
936 | high = (code[i] & 0xFF00) >> 8; |
937 | low = code[i] & 0x00FF; | |
938 | if (!font_info->metrics[high]) | |
939 | ns_glyph_metrics (font_info, high); | |
940 | pcm = &(font_info->metrics[high][low]); | |
941 | ||
942 | if (metrics->lbearing > totalWidth + pcm->lbearing) | |
943 | metrics->lbearing = totalWidth + pcm->lbearing; | |
944 | if (metrics->rbearing < totalWidth + pcm->rbearing) | |
945 | metrics->rbearing = totalWidth + pcm->rbearing; | |
946 | if (metrics->ascent < pcm->ascent) | |
947 | metrics->ascent = pcm->ascent; | |
948 | if (metrics->descent < pcm->descent) | |
949 | metrics->descent = pcm->descent; | |
950 | ||
951 | totalWidth += pcm->width; | |
952 | } | |
953 | ||
954 | metrics->width = totalWidth; | |
955 | ||
956 | return totalWidth; /* not specified in doc, but xfont.c does it */ | |
957 | } | |
958 | ||
959 | ||
960 | /* Draw glyphs between FROM and TO of S->char2b at (X Y) pixel | |
961 | position of frame F with S->FACE and S->GC. If WITH_BACKGROUND | |
962 | is nonzero, fill the background in advance. It is assured that | |
963 | WITH_BACKGROUND is zero when (FROM > 0 || TO < S->nchars). */ | |
964 | static int | |
965 | nsfont_draw (struct glyph_string *s, int from, int to, int x, int y, | |
966 | int with_background) | |
967 | /* NOTE: focus and clip must be set | |
968 | also, currently assumed (true in nsterm.m call) from ==0, to ==nchars */ | |
969 | { | |
970 | static char cbuf[1024]; | |
971 | char *c = cbuf; | |
972 | #ifdef NS_IMPL_GNUSTEP | |
973 | static float advances[1024]; | |
974 | float *adv = advances; | |
975 | #else | |
976 | static CGSize advances[1024]; | |
977 | CGSize *adv = advances; | |
978 | #endif | |
979 | struct face *face; | |
980 | NSRect r; | |
981 | struct nsfont_info *font = ns_tmp_font; | |
982 | NSColor *col, *bgCol; | |
983 | unsigned short *t = s->char2b; | |
984 | int i, len; | |
8840261a AR |
985 | char isComposite = s->first_glyph->type == COMPOSITE_GLYPH; |
986 | int end = isComposite ? s->cmp_to : s->nchars; | |
a68fda4a AR |
987 | |
988 | /* Select face based on input flags */ | |
989 | switch (ns_tmp_flags) | |
990 | { | |
991 | case NS_DUMPGLYPH_CURSOR: | |
992 | face = s->face; | |
993 | break; | |
994 | case NS_DUMPGLYPH_MOUSEFACE: | |
995 | face = FACE_FROM_ID (s->f, | |
996 | FRAME_NS_DISPLAY_INFO (s->f)->mouse_face_face_id); | |
997 | if (!face) | |
998 | face = FACE_FROM_ID (s->f, MOUSE_FACE_ID); | |
999 | break; | |
1000 | default: | |
1001 | face = s->face; | |
1002 | } | |
1003 | ||
1004 | r.origin.x = s->x; | |
1005 | if (s->face->box != FACE_NO_BOX && s->first_glyph->left_box_line_p) | |
1006 | r.origin.x += abs (s->face->box_line_width); | |
1007 | ||
1008 | r.origin.y = s->y; | |
1009 | r.size.height = FONT_HEIGHT (font); | |
1010 | ||
1011 | /* Convert UTF-16 (?) to UTF-8 and determine advances. Note if we just ask | |
1012 | NS to render the string, it will come out differently from the individual | |
1013 | character widths added up because of layout processing. */ | |
1014 | { | |
1015 | XCharStruct *cs; | |
1016 | int cwidth, twidth = 0; | |
1017 | int hi, lo; | |
df2142db | 1018 | /* FIXME: composition: no vertical displacement is considered. */ |
81cfe31c | 1019 | t += s->cmp_from; /* advance into composition */ |
8840261a | 1020 | for (i = s->cmp_from; i < end; i++, t++) |
a68fda4a AR |
1021 | { |
1022 | hi = (*t & 0xFF00) >> 8; | |
1023 | lo = *t & 0x00FF; | |
1024 | if (isComposite) | |
1025 | { | |
8840261a AR |
1026 | if (!s->first_glyph->u.cmp.automatic) |
1027 | cwidth = s->cmp->offsets[i * 2] /* (H offset) */ - twidth; | |
1028 | else | |
1029 | { | |
1030 | Lisp_Object gstring = composition_gstring_from_id (s->cmp_id); | |
1031 | Lisp_Object glyph = LGSTRING_GLYPH (gstring, i); | |
1032 | if (NILP (LGLYPH_ADJUSTMENT (glyph))) | |
1033 | cwidth = LGLYPH_WIDTH (glyph); | |
1034 | else | |
1035 | { | |
1036 | cwidth = LGLYPH_WADJUST (glyph); | |
1037 | #ifdef NS_IMPL_GNUSTEP | |
1038 | *(adv-1) += LGLYPH_XOFF (glyph); | |
1039 | #else | |
1040 | (*(adv-1)).width += LGLYPH_XOFF (glyph); | |
1041 | #endif | |
1042 | } | |
1043 | } | |
a68fda4a AR |
1044 | } |
1045 | else | |
1046 | { | |
df2142db | 1047 | if (!font->metrics[hi]) /* FIXME: why/how can we need this now? */ |
a68fda4a AR |
1048 | ns_glyph_metrics (font, hi); |
1049 | cwidth = font->metrics[hi][lo].width; | |
1050 | } | |
1051 | twidth += cwidth; | |
1052 | #ifdef NS_IMPL_GNUSTEP | |
1053 | *adv++ = cwidth; | |
1054 | CHAR_STRING_ADVANCE (*t, c); /* this converts the char to UTF-8 */ | |
1055 | #else | |
1056 | (*adv++).width = cwidth; | |
1057 | #endif | |
1058 | } | |
1059 | len = adv - advances; | |
1060 | r.size.width = twidth; | |
1061 | *c = 0; | |
1062 | } | |
1063 | ||
1064 | /* fill background if requested */ | |
8840261a | 1065 | if (with_background && !isComposite) |
a68fda4a AR |
1066 | { |
1067 | NSRect br = r; | |
1068 | int fibw = FRAME_INTERNAL_BORDER_WIDTH (s->f); | |
1069 | int mbox_line_width = max (s->face->box_line_width, 0); | |
1070 | ||
1071 | if (s->row->full_width_p) | |
1072 | { | |
1073 | if (br.origin.x <= fibw + 1 + mbox_line_width) | |
1074 | { | |
1075 | br.size.width += br.origin.x - mbox_line_width; | |
1076 | br.origin.x = mbox_line_width; | |
1077 | } | |
1078 | if (FRAME_PIXEL_WIDTH (s->f) - (br.origin.x + br.size.width) | |
1079 | <= fibw+1) | |
1080 | br.size.width += fibw; | |
1081 | } | |
1082 | if (s->face->box == FACE_NO_BOX) | |
1083 | { | |
1084 | /* expand unboxed top row over internal border */ | |
1085 | if (br.origin.y <= fibw + 1 + mbox_line_width) | |
1086 | { | |
1087 | br.size.height += br.origin.y; | |
1088 | br.origin.y = 0; | |
1089 | } | |
1090 | } | |
1091 | else | |
1092 | { | |
1093 | int correction = abs (s->face->box_line_width)+1; | |
1094 | br.origin.y += correction; | |
1095 | br.size.height -= 2*correction; | |
1096 | br.origin.x += correction; | |
1097 | br.size.width -= 2*correction; | |
1098 | } | |
1099 | ||
1100 | if (!s->face->stipple) | |
45d325c4 | 1101 | [(NS_FACE_BACKGROUND (face) != 0 |
a68fda4a AR |
1102 | ? ns_lookup_indexed_color (NS_FACE_BACKGROUND (face), s->f) |
1103 | : FRAME_BACKGROUND_COLOR (s->f)) set]; | |
1104 | else | |
1105 | { | |
1106 | struct ns_display_info *dpyinfo = FRAME_NS_DISPLAY_INFO (s->f); | |
1107 | [[dpyinfo->bitmaps[face->stipple-1].img stippleMask] set]; | |
1108 | } | |
1109 | NSRectFill (br); | |
1110 | } | |
1111 | ||
1112 | ||
1113 | /* set up for character rendering */ | |
1114 | r.origin.y += font->voffset + (s->height - font->height)/2; | |
1115 | ||
15034960 | 1116 | col = (NS_FACE_FOREGROUND (face) != 0 |
a68fda4a AR |
1117 | ? ns_lookup_indexed_color (NS_FACE_FOREGROUND (face), s->f) |
1118 | : FRAME_FOREGROUND_COLOR (s->f)); | |
df2142db | 1119 | /* FIXME: find another way to pass this */ |
a68fda4a | 1120 | bgCol = (ns_tmp_flags != NS_DUMPGLYPH_FOREGROUND ? nil |
45d325c4 | 1121 | : (NS_FACE_BACKGROUND (face) != 0 |
a68fda4a AR |
1122 | ? ns_lookup_indexed_color (NS_FACE_BACKGROUND (face), s->f) |
1123 | : FRAME_BACKGROUND_COLOR (s->f))); | |
1124 | ||
1125 | /* render under GNUstep using DPS */ | |
1126 | #ifdef NS_IMPL_GNUSTEP | |
1127 | { | |
1128 | NSGraphicsContext *context = GSCurrentContext (); | |
1129 | ||
1130 | DPSgsave (context); | |
1131 | [font->nsfont set]; | |
1132 | ||
1133 | /* do erase if "foreground" mode */ | |
1134 | if (bgCol != nil) | |
1135 | { | |
1136 | [bgCol set]; | |
1137 | DPSmoveto (context, r.origin.x, r.origin.y); | |
1138 | /*[context GSSetTextDrawingMode: GSTextFillStroke]; /// not implemented yet */ | |
1139 | DPSxshow (context, cbuf, advances, len); | |
1140 | DPSstroke (context); | |
1141 | [col set]; | |
1142 | /*[context GSSetTextDrawingMode: GSTextFill]; /// not implemented yet */ | |
1143 | } | |
1144 | ||
1145 | /* do underline */ | |
1146 | if (face->underline_p) | |
1147 | { | |
f2f7f42c | 1148 | if (face->underline_color != 0) |
a68fda4a AR |
1149 | [ns_lookup_indexed_color (face->underline_color, s->f) set]; |
1150 | else | |
1151 | [col set]; | |
1152 | DPSmoveto (context, r.origin.x, r.origin.y + font->underpos); | |
1153 | DPSlineto (context, r.origin.x+r.size.width, r.origin.y+font->underpos); | |
f2f7f42c | 1154 | if (face->underline_color != 0) |
a68fda4a AR |
1155 | [col set]; |
1156 | } | |
1157 | else | |
1158 | [col set]; | |
1159 | ||
1160 | /* draw with DPSxshow () */ | |
1161 | DPSmoveto (context, r.origin.x, r.origin.y); | |
1162 | DPSxshow (context, cbuf, advances, len); | |
1163 | DPSstroke (context); | |
1164 | ||
1165 | DPSgrestore (context); | |
1166 | return to-from; | |
1167 | } | |
1168 | ||
1169 | #else /* NS_IMPL_COCOA */ | |
1170 | { | |
1171 | CGContextRef gcontext = | |
1172 | [[NSGraphicsContext currentContext] graphicsPort]; | |
1173 | static CGAffineTransform fliptf; | |
1174 | static BOOL firstTime = YES; | |
1175 | ||
1176 | if (firstTime) | |
1177 | { | |
1178 | firstTime = NO; | |
1179 | fliptf = CGAffineTransformMakeScale (1.0, -1.0); | |
1180 | } | |
1181 | ||
1182 | CGContextSaveGState (gcontext); | |
1183 | ||
1184 | fliptf.c = font->synthItal ? Fix2X (kATSItalicQDSkew) : 0.0; | |
1185 | ||
1186 | CGContextSetFont (gcontext, font->cgfont); | |
1187 | CGContextSetFontSize (gcontext, font->size); | |
2f462d73 | 1188 | if (ns_antialias_text == Qnil || font->size <= ns_antialias_threshold) |
a68fda4a AR |
1189 | CGContextSetShouldAntialias (gcontext, 0); |
1190 | else | |
1191 | CGContextSetShouldAntialias (gcontext, 1); | |
5c976973 | 1192 | if (EQ (ns_use_qd_smoothing, Qt)) |
a68fda4a AR |
1193 | CGContextSetFontRenderingMode (gcontext, 2); /* 0 is Cocoa, 2 is QD */ |
1194 | ||
1195 | CGContextSetTextMatrix (gcontext, fliptf); | |
1196 | ||
1197 | if (bgCol != nil) | |
1198 | { | |
1199 | /* foreground drawing; erase first to avoid overstrike */ | |
1200 | [bgCol set]; | |
1201 | CGContextSetTextDrawingMode (gcontext, kCGTextFillStroke); | |
1202 | CGContextSetTextPosition (gcontext, r.origin.x, r.origin.y); | |
1203 | CGContextShowGlyphsWithAdvances (gcontext, s->char2b, advances, len); | |
1204 | CGContextSetTextDrawingMode (gcontext, kCGTextFill); | |
1205 | } | |
1206 | ||
1207 | if (face->underline_p) | |
1208 | { | |
15034960 | 1209 | if (face->underline_color != 0) |
a68fda4a AR |
1210 | [ns_lookup_indexed_color (face->underline_color, s->f) set]; |
1211 | else | |
1212 | [col set]; | |
1213 | CGContextBeginPath (gcontext); | |
1214 | CGContextMoveToPoint (gcontext, | |
1215 | r.origin.x, r.origin.y + font->underpos); | |
1216 | CGContextAddLineToPoint (gcontext, r.origin.x + r.size.width, | |
1217 | r.origin.y + font->underpos); | |
1218 | CGContextStrokePath (gcontext); | |
15034960 | 1219 | if (face->underline_color != 0) |
a68fda4a AR |
1220 | [col set]; |
1221 | } | |
1222 | else | |
1223 | [col set]; | |
1224 | ||
1225 | CGContextSetTextPosition (gcontext, r.origin.x, r.origin.y); | |
93c7fcf8 | 1226 | CGContextShowGlyphsWithAdvances (gcontext, s->char2b + s->cmp_from, |
a68fda4a AR |
1227 | advances, len); |
1228 | ||
1229 | if (face->overstrike) | |
1230 | { | |
1231 | CGContextSetTextPosition (gcontext, r.origin.x+0.5, r.origin.y); | |
93c7fcf8 | 1232 | CGContextShowGlyphsWithAdvances (gcontext, s->char2b + s->cmp_from, |
a68fda4a AR |
1233 | advances, len); |
1234 | } | |
1235 | ||
1236 | CGContextRestoreGState (gcontext); | |
1237 | return; | |
1238 | } | |
1239 | #endif /* NS_IMPL_COCOA */ | |
1240 | ||
1241 | } | |
1242 | ||
1243 | ||
a68fda4a AR |
1244 | |
1245 | /* ========================================================================== | |
1246 | ||
1247 | Font glyph and metrics caching functions | |
1248 | ||
1249 | ========================================================================== */ | |
1250 | ||
1251 | /* Find and cache corresponding glyph codes for unicode values in given | |
1252 | hi-byte block of 256. */ | |
1253 | static void | |
1254 | ns_uni_to_glyphs (struct nsfont_info *font_info, unsigned char block) | |
1255 | { | |
1256 | #ifdef NS_IMPL_COCOA | |
1257 | static EmacsGlyphStorage *glyphStorage; | |
1258 | static char firstTime = 1; | |
1259 | #endif | |
1260 | unichar *unichars = xmalloc (0x101 * sizeof (unichar)); | |
1261 | unsigned int i, g, idx; | |
1262 | unsigned short *glyphs; | |
1263 | ||
1264 | if (NSFONT_TRACE) | |
1265 | fprintf (stderr, "%p\tFinding glyphs for glyphs in block %d\n", | |
1266 | font_info, block); | |
1267 | ||
1268 | BLOCK_INPUT; | |
1269 | ||
1270 | #ifdef NS_IMPL_COCOA | |
1271 | if (firstTime) | |
1272 | { | |
1273 | firstTime = 0; | |
1274 | glyphStorage = [[EmacsGlyphStorage alloc] initWithCapacity: 0x100]; | |
1275 | } | |
1276 | #endif | |
1277 | ||
1278 | font_info->glyphs[block] = xmalloc (0x100 * sizeof (unsigned short)); | |
1279 | if (!unichars || !(font_info->glyphs[block])) | |
1280 | abort (); | |
1281 | ||
1282 | /* create a string containing all unicode characters in this block */ | |
1283 | for (idx = block<<8, i =0; i<0x100; idx++, i++) | |
1284 | if (idx < 0xD800 || idx > 0xDFFF) | |
1285 | unichars[i] = idx; | |
1286 | else | |
1287 | unichars[i] = 0xFEFF; | |
1288 | unichars[0x100] = 0; | |
1289 | ||
1290 | { | |
1291 | #ifdef NS_IMPL_COCOA | |
1292 | NSString *allChars = [[NSString alloc] | |
1293 | initWithCharactersNoCopy: unichars | |
1294 | length: 0x100 | |
1295 | freeWhenDone: NO]; | |
1296 | NSGlyphGenerator *glyphGenerator = [NSGlyphGenerator sharedGlyphGenerator]; | |
1297 | /*NSCharacterSet *coveredChars = [nsfont coveredCharacterSet]; */ | |
1298 | unsigned int numGlyphs = [font_info->nsfont numberOfGlyphs]; | |
1299 | unsigned int gInd =0, cInd =0; | |
1300 | ||
1301 | [glyphStorage setString: allChars font: font_info->nsfont]; | |
1302 | [glyphGenerator generateGlyphsForGlyphStorage: glyphStorage | |
1303 | desiredNumberOfCharacters: glyphStorage->maxChar | |
1304 | glyphIndex: &gInd characterIndex: &cInd]; | |
1305 | #endif | |
1306 | glyphs = font_info->glyphs[block]; | |
1307 | for (i =0; i<0x100; i++, glyphs++) | |
1308 | { | |
1309 | #ifdef NS_IMPL_GNUSTEP | |
1310 | g = unichars[i]; | |
1311 | #else | |
1312 | g = glyphStorage->cglyphs[i]; | |
df2142db | 1313 | /* TODO: is this a good check? maybe need to use coveredChars.. */ |
a68fda4a AR |
1314 | if (g > numGlyphs) |
1315 | g = 0xFFFF; /* hopefully unused... */ | |
1316 | #endif | |
1317 | *glyphs = g; | |
1318 | } | |
1319 | ||
1320 | #ifdef NS_IMPL_COCOA | |
1321 | [allChars release]; | |
1322 | #endif | |
1323 | } | |
1324 | ||
1325 | UNBLOCK_INPUT; | |
1326 | xfree (unichars); | |
1327 | } | |
1328 | ||
1329 | ||
1330 | /* Determine and cache metrics for corresponding glyph codes in given | |
1331 | hi-byte block of 256. */ | |
1332 | static void | |
1333 | ns_glyph_metrics (struct nsfont_info *font_info, unsigned char block) | |
1334 | { | |
1335 | unsigned int i, g; | |
1336 | unsigned int numGlyphs = [font_info->nsfont numberOfGlyphs]; | |
1337 | NSFont *sfont; | |
1338 | struct font_metrics *metrics; | |
1339 | ||
1340 | if (NSFONT_TRACE) | |
1341 | fprintf (stderr, "%p\tComputing metrics for glyphs in block %d\n", | |
1342 | font_info, block); | |
1343 | ||
1344 | #ifdef NS_IMPL_GNUSTEP | |
1345 | /* not implemented yet (as of startup 0.18), so punt */ | |
1346 | if (numGlyphs == 0) | |
1347 | numGlyphs = 0x10000; | |
1348 | #endif | |
1349 | ||
1350 | BLOCK_INPUT; | |
1351 | sfont = [font_info->nsfont screenFont]; | |
1352 | ||
1353 | font_info->metrics[block] = xmalloc (0x100 * sizeof (struct font_metrics)); | |
1354 | bzero (font_info->metrics[block], 0x100 * sizeof (struct font_metrics)); | |
1355 | if (!(font_info->metrics[block])) | |
1356 | abort (); | |
1357 | ||
1358 | metrics = font_info->metrics[block]; | |
1359 | for (g = block<<8, i =0; i<0x100 && g < numGlyphs; g++, i++, metrics++) | |
1360 | { | |
1361 | float w, lb, rb; | |
1362 | NSRect r = [sfont boundingRectForGlyph: g]; | |
1363 | ||
1364 | #ifdef NS_IMPL_GNUSTEP | |
1365 | { | |
1366 | /* lord help us */ | |
1367 | NSString *s = [NSString stringWithFormat: @"%c", g]; | |
1368 | w = [sfont widthOfString: s]; | |
1369 | } | |
1370 | #else | |
1371 | w = [sfont advancementForGlyph: g].width; | |
1372 | #endif | |
1373 | w = max (w, 2.0); | |
1374 | metrics->width = lrint (w); | |
1375 | ||
1376 | lb = r.origin.x; | |
1377 | rb = r.size.width - w; | |
1378 | if (lb < 0) | |
1379 | metrics->lbearing = round (lb); | |
1380 | if (font_info->ital) | |
1381 | rb += 0.22 * font_info->height; | |
1382 | metrics->rbearing = lrint (w + rb); | |
1383 | ||
1384 | metrics->descent = r.origin.y < 0 ? -r.origin.y : 0; | |
1385 | /*lrint (hshrink * [sfont ascender] + expand * hd/2); */ | |
1386 | metrics->ascent = r.size.height - metrics->descent; | |
1387 | /*-lrint (hshrink* [sfont descender] - expand * hd/2); */ | |
1388 | } | |
1389 | UNBLOCK_INPUT; | |
1390 | } | |
1391 | ||
1392 | ||
1393 | #ifdef NS_IMPL_COCOA | |
1394 | /* helper for font glyph setup */ | |
1395 | @implementation EmacsGlyphStorage | |
1396 | ||
1397 | - init | |
1398 | { | |
1399 | return [self initWithCapacity: 1024]; | |
1400 | } | |
1401 | ||
1402 | - initWithCapacity: (unsigned long) c | |
1403 | { | |
1404 | self = [super init]; | |
1405 | maxChar = 0; | |
1406 | maxGlyph = 0; | |
1407 | dict = [NSMutableDictionary new]; | |
1408 | cglyphs = (CGGlyph *)xmalloc (c * sizeof (CGGlyph)); | |
1409 | return self; | |
1410 | } | |
1411 | ||
1412 | - (void) dealloc | |
1413 | { | |
1414 | if (attrStr != nil) | |
1415 | [attrStr release]; | |
1416 | [dict release]; | |
1417 | xfree (cglyphs); | |
1418 | [super dealloc]; | |
1419 | } | |
1420 | ||
1421 | - (void) setString: (NSString *)str font: (NSFont *)font | |
1422 | { | |
1423 | [dict setObject: font forKey: NSFontAttributeName]; | |
1424 | attrStr = [[NSAttributedString alloc] initWithString: str attributes: dict]; | |
1425 | maxChar = [str length]; | |
1426 | maxGlyph = 0; | |
1427 | } | |
1428 | ||
1429 | /* NSGlyphStorage protocol */ | |
1430 | - (unsigned int)layoutOptions | |
1431 | { | |
1432 | return 0; | |
1433 | } | |
1434 | ||
1435 | - (NSAttributedString *)attributedString | |
1436 | { | |
1437 | return attrStr; | |
1438 | } | |
1439 | ||
1440 | - (void)insertGlyphs: (const NSGlyph *)glyphs length: (unsigned int)length | |
1441 | forStartingGlyphAtIndex: (unsigned int)glyphIndex | |
1442 | characterIndex: (unsigned int)charIndex | |
1443 | { | |
1444 | len = glyphIndex+length; | |
1445 | for (i =glyphIndex; i<len; i++) | |
1446 | cglyphs[i] = glyphs[i-glyphIndex]; | |
1447 | if (len > maxGlyph) | |
1448 | maxGlyph = len; | |
1449 | } | |
1450 | ||
1451 | - (void)setIntAttribute: (int)attributeTag value: (int)val | |
1452 | forGlyphAtIndex: (unsigned)glyphIndex | |
1453 | { | |
1454 | return; | |
1455 | } | |
1456 | ||
1457 | @end | |
1458 | #endif /* NS_IMPL_COCOA */ | |
1459 | ||
1460 | ||
1461 | /* Debugging */ | |
1462 | void | |
8840261a | 1463 | ns_dump_glyphstring (struct glyph_string *s) |
a68fda4a AR |
1464 | { |
1465 | int i; | |
1466 | ||
8840261a AR |
1467 | fprintf (stderr, "Glyph string len = %d at (%d, %d) overhang (%d, %d)," |
1468 | "overlap = %d, bg_filled = %d:", | |
a68fda4a AR |
1469 | s->nchars, s->x, s->y, s->left_overhang, s->right_overhang, |
1470 | s->row->overlapping_p, s->background_filled_p); | |
1471 | for (i =0; i<s->nchars; i++) | |
1472 | fprintf (stderr, "%c", s->first_glyph[i].u.ch); | |
1473 | fprintf (stderr, "\n"); | |
1474 | } | |
1475 | ||
1476 | ||
a68fda4a AR |
1477 | void |
1478 | syms_of_nsfont () | |
1479 | { | |
1480 | nsfont_driver.type = Qns; | |
1481 | register_font_driver (&nsfont_driver, NULL); | |
1482 | DEFSYM (Qapple, "apple"); | |
1483 | DEFSYM (Qroman, "roman"); | |
1484 | DEFSYM (Qmedium, "medium"); | |
1485 | } | |
0ae1e5e5 | 1486 | |
2f8e74bb | 1487 | // arch-tag: d6c3c6f0-62de-4978-8b1e-b7966fe02cae |