Commit | Line | Data |
---|---|---|
a68fda4a AR |
1 | /* Font back-end driver for the NeXT/Open/GNUstep and MacOSX window system. |
2 | See font.h | |
ab422c4d | 3 | Copyright (C) 2006-2013 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" | |
a68fda4a AR |
36 | #include "character.h" |
37 | #include "font.h" | |
80417b95 | 38 | #include "termchar.h" |
a68fda4a | 39 | |
6e2f42b4 | 40 | /* TODO: Drop once we can assume gnustep-gui 0.17.1. */ |
4e2f36cf AR |
41 | #ifdef NS_IMPL_GNUSTEP |
42 | #import <AppKit/NSFontDescriptor.h> | |
43 | #endif | |
44 | ||
a68fda4a | 45 | #define NSFONT_TRACE 0 |
b826986f | 46 | #define LCD_SMOOTHING_MARGIN 2 |
a68fda4a AR |
47 | |
48 | extern Lisp_Object Qns; | |
7ad27466 | 49 | extern Lisp_Object Qnormal, Qbold, Qitalic; |
a68fda4a | 50 | static Lisp_Object Qapple, Qroman, Qmedium; |
719b0aa5 | 51 | static Lisp_Object Qcondensed, Qexpanded; |
a68fda4a | 52 | extern Lisp_Object Qappend; |
a68fda4a AR |
53 | extern float ns_antialias_threshold; |
54 | extern int ns_tmp_flags; | |
55 | extern struct nsfont_info *ns_tmp_font; | |
56 | ||
62c480c9 | 57 | |
a68fda4a AR |
58 | /* font glyph and metrics caching functions, implemented at end */ |
59 | static void ns_uni_to_glyphs (struct nsfont_info *font_info, | |
60 | unsigned char block); | |
61 | static void ns_glyph_metrics (struct nsfont_info *font_info, | |
62 | unsigned char block); | |
63 | ||
0ce9f6de | 64 | #define INVALID_GLYPH 0xFFFF |
a68fda4a AR |
65 | |
66 | /* ========================================================================== | |
67 | ||
68 | Utilities | |
69 | ||
70 | ========================================================================== */ | |
71 | ||
72 | ||
73 | /* Replace spaces w/another character so emacs core font parsing routines | |
74 | aren't thrown off. */ | |
75 | static void | |
8840261a | 76 | ns_escape_name (char *name) |
a68fda4a | 77 | { |
fd3ceb09 DA |
78 | for (; *name; name++) |
79 | if (*name == ' ') | |
80 | *name = '_'; | |
a68fda4a AR |
81 | } |
82 | ||
83 | ||
84 | /* Reconstruct spaces in a font family name passed through emacs. */ | |
85 | static void | |
8840261a | 86 | ns_unescape_name (char *name) |
a68fda4a | 87 | { |
fd3ceb09 DA |
88 | for (; *name; name++) |
89 | if (*name == '_') | |
90 | *name = ' '; | |
a68fda4a AR |
91 | } |
92 | ||
93 | ||
94 | /* Extract family name from a font spec. */ | |
95 | static NSString * | |
8840261a | 96 | ns_get_family (Lisp_Object font_spec) |
a68fda4a AR |
97 | { |
98 | Lisp_Object tem = AREF (font_spec, FONT_FAMILY_INDEX); | |
99 | if (NILP (tem)) | |
100 | return nil; | |
101 | else | |
102 | { | |
0dc8cf50 | 103 | char *tmp = xstrdup (SSDATA (SYMBOL_NAME (tem))); |
a68fda4a | 104 | NSString *family; |
8840261a | 105 | ns_unescape_name (tmp); |
a68fda4a | 106 | family = [NSString stringWithUTF8String: tmp]; |
613052cd | 107 | xfree (tmp); |
a68fda4a AR |
108 | return family; |
109 | } | |
110 | } | |
111 | ||
112 | ||
4b7f335c AR |
113 | /* Return 0 if attr not set, else value (which might also be 0). |
114 | On Leopard 0 gets returned even on descriptors where the attribute | |
115 | was never set, so there's no way to distinguish between unspecified | |
116 | and set to not have. Callers should assume 0 means unspecified. */ | |
8840261a AR |
117 | static float |
118 | ns_attribute_fvalue (NSFontDescriptor *fdesc, NSString *trait) | |
119 | { | |
4b7f335c AR |
120 | NSDictionary *tdict = [fdesc objectForKey: NSFontTraitsAttribute]; |
121 | NSNumber *val = [tdict objectForKey: trait]; | |
c0342369 | 122 | return val == nil ? 0.0F : [val floatValue]; |
8840261a | 123 | } |
a68fda4a | 124 | |
a68fda4a | 125 | |
8840261a AR |
126 | /* Converts FONT_WEIGHT, FONT_SLANT, FONT_WIDTH, plus family and script/lang |
127 | to NSFont descriptor. Information under extra only needed for matching. */ | |
128 | #define STYLE_REF 100 | |
204ee57f JD |
129 | static NSFontDescriptor * |
130 | ns_spec_to_descriptor (Lisp_Object font_spec) | |
8840261a AR |
131 | { |
132 | NSFontDescriptor *fdesc; | |
133 | NSMutableDictionary *fdAttrs = [NSMutableDictionary new]; | |
134 | NSMutableDictionary *tdict = [NSMutableDictionary new]; | |
135 | NSString *family = ns_get_family (font_spec); | |
136 | float n; | |
137 | ||
138 | /* add each attr in font_spec to fdAttrs.. */ | |
139 | n = min (FONT_WEIGHT_NUMERIC (font_spec), 200); | |
140 | if (n != -1 && n != STYLE_REF) | |
c0342369 | 141 | [tdict setObject: [NSNumber numberWithFloat: (n - 100.0F) / 100.0F] |
8840261a AR |
142 | forKey: NSFontWeightTrait]; |
143 | n = min (FONT_SLANT_NUMERIC (font_spec), 200); | |
144 | if (n != -1 && n != STYLE_REF) | |
c0342369 | 145 | [tdict setObject: [NSNumber numberWithFloat: (n - 100.0F) / 100.0F] |
8840261a AR |
146 | forKey: NSFontSlantTrait]; |
147 | n = min (FONT_WIDTH_NUMERIC (font_spec), 200); | |
148 | if (n > -1 && (n > STYLE_REF + 10 || n < STYLE_REF - 10)) | |
c0342369 | 149 | [tdict setObject: [NSNumber numberWithFloat: (n - 100.0F) / 100.0F] |
8840261a AR |
150 | forKey: NSFontWidthTrait]; |
151 | if ([tdict count] > 0) | |
152 | [fdAttrs setObject: tdict forKey: NSFontTraitsAttribute]; | |
153 | ||
8fdeaad5 JD |
154 | fdesc = [[[NSFontDescriptor fontDescriptorWithFontAttributes: fdAttrs] |
155 | retain] autorelease]; | |
156 | ||
38182d90 | 157 | if (family != nil) |
204ee57f | 158 | { |
8fdeaad5 JD |
159 | NSFontDescriptor *fdesc2 = [fdesc fontDescriptorWithFamily: family]; |
160 | fdesc = [[fdesc2 retain] autorelease]; | |
204ee57f JD |
161 | } |
162 | ||
163 | [fdAttrs release]; | |
164 | [tdict release]; | |
8840261a | 165 | return fdesc; |
a68fda4a AR |
166 | } |
167 | ||
168 | ||
8840261a | 169 | /* Converts NSFont descriptor to FONT_WEIGHT, FONT_SLANT, FONT_WIDTH, etc.. */ |
a68fda4a | 170 | static Lisp_Object |
9c5bd55a J |
171 | ns_descriptor_to_entity (NSFontDescriptor *desc, |
172 | Lisp_Object extra, | |
173 | const char *style) | |
a68fda4a | 174 | { |
8840261a AR |
175 | Lisp_Object font_entity = font_make_entity (); |
176 | /* NSString *psName = [desc postscriptName]; */ | |
177 | NSString *family = [desc objectForKey: NSFontFamilyAttribute]; | |
8840261a | 178 | unsigned int traits = [desc symbolicTraits]; |
b9173dc2 | 179 | char *escapedFamily; |
8840261a | 180 | |
b9173dc2 AR |
181 | /* Shouldn't happen, but on Tiger fallback desc gets name but no family. */ |
182 | if (family == nil) | |
183 | family = [desc objectForKey: NSFontNameAttribute]; | |
184 | if (family == nil) | |
185 | family = [[NSFont userFixedPitchFontOfSize: 0] familyName]; | |
186 | ||
6ca3801d | 187 | escapedFamily = xstrdup ([family UTF8String]); |
8840261a AR |
188 | ns_escape_name (escapedFamily); |
189 | ||
190 | ASET (font_entity, FONT_TYPE_INDEX, Qns); | |
191 | ASET (font_entity, FONT_FOUNDRY_INDEX, Qapple); | |
192 | ASET (font_entity, FONT_FAMILY_INDEX, intern (escapedFamily)); | |
193 | ASET (font_entity, FONT_ADSTYLE_INDEX, style ? intern (style) : Qnil); | |
194 | ASET (font_entity, FONT_REGISTRY_INDEX, Qiso10646_1); | |
195 | ||
196 | FONT_SET_STYLE (font_entity, FONT_WEIGHT_INDEX, | |
197 | traits & NSFontBoldTrait ? Qbold : Qmedium); | |
198 | /* FONT_SET_STYLE (font_entity, FONT_WEIGHT_INDEX, | |
199 | make_number (100 + 100 | |
200 | * ns_attribute_fvalue (desc, NSFontWeightTrait)));*/ | |
201 | FONT_SET_STYLE (font_entity, FONT_SLANT_INDEX, | |
202 | traits & NSFontItalicTrait ? Qitalic : Qnormal); | |
203 | /* FONT_SET_STYLE (font_entity, FONT_SLANT_INDEX, | |
204 | make_number (100 + 100 | |
205 | * ns_attribute_fvalue (desc, NSFontSlantTrait)));*/ | |
719b0aa5 JD |
206 | FONT_SET_STYLE (font_entity, FONT_WIDTH_INDEX, |
207 | traits & NSFontCondensedTrait ? Qcondensed : | |
208 | traits & NSFontExpandedTrait ? Qexpanded : Qnormal); | |
8840261a AR |
209 | /* FONT_SET_STYLE (font_entity, FONT_WIDTH_INDEX, |
210 | make_number (100 + 100 | |
211 | * ns_attribute_fvalue (desc, NSFontWidthTrait)));*/ | |
212 | ||
213 | ASET (font_entity, FONT_SIZE_INDEX, make_number (0)); | |
214 | ASET (font_entity, FONT_AVGWIDTH_INDEX, make_number (0)); | |
215 | ASET (font_entity, FONT_SPACING_INDEX, | |
216 | make_number([desc symbolicTraits] & NSFontMonoSpaceTrait | |
217 | ? FONT_SPACING_MONO : FONT_SPACING_PROPORTIONAL)); | |
218 | ||
219 | ASET (font_entity, FONT_EXTRA_INDEX, extra); | |
220 | ASET (font_entity, FONT_OBJLIST_INDEX, Qnil); | |
221 | ||
222 | if (NSFONT_TRACE) | |
223 | { | |
224 | fprintf (stderr, "created font_entity:\n "); | |
225 | debug_print (font_entity); | |
226 | } | |
a68fda4a | 227 | |
613052cd | 228 | xfree (escapedFamily); |
8840261a AR |
229 | return font_entity; |
230 | } | |
a68fda4a | 231 | |
8840261a AR |
232 | |
233 | /* Default font entity. */ | |
234 | static Lisp_Object | |
3d608a86 | 235 | ns_fallback_entity (void) |
8840261a AR |
236 | { |
237 | return ns_descriptor_to_entity ([[NSFont userFixedPitchFontOfSize: 0] | |
238 | fontDescriptor], Qnil, NULL); | |
a68fda4a AR |
239 | } |
240 | ||
241 | ||
179dad8e | 242 | /* Utility: get width of a char c in screen font SFONT */ |
c0342369 | 243 | static CGFloat |
8840261a | 244 | ns_char_width (NSFont *sfont, int c) |
a68fda4a | 245 | { |
c0342369 | 246 | CGFloat w = -1.0; |
179dad8e CY |
247 | NSString *cstr = [NSString stringWithFormat: @"%c", c]; |
248 | ||
8840261a | 249 | #ifdef NS_IMPL_COCOA |
179dad8e CY |
250 | NSGlyph glyph = [sfont glyphWithName: cstr]; |
251 | if (glyph) | |
252 | w = [sfont advancementForGlyph: glyph].width; | |
8840261a | 253 | #endif |
179dad8e CY |
254 | |
255 | if (w < 0.0) | |
e28db5bc AR |
256 | { |
257 | NSDictionary *attrsDictionary = | |
258 | [NSDictionary dictionaryWithObject: sfont forKey: NSFontAttributeName]; | |
259 | w = [cstr sizeWithAttributes: attrsDictionary].width; | |
260 | } | |
179dad8e CY |
261 | |
262 | return max (w, 1.0); | |
263 | } | |
264 | ||
265 | /* Return average width over ASCII printable characters for SFONT. */ | |
266 | ||
267 | static NSString *ascii_printable; | |
268 | ||
269 | static int | |
270 | ns_ascii_average_width (NSFont *sfont) | |
271 | { | |
c0342369 | 272 | CGFloat w = -1.0; |
179dad8e CY |
273 | |
274 | if (!ascii_printable) | |
275 | { | |
d7191076 | 276 | char chars[96]; |
179dad8e CY |
277 | int ch; |
278 | for (ch = 0; ch < 95; ch++) | |
279 | chars[ch] = ' ' + ch; | |
d7191076 | 280 | chars[95] = '\0'; |
179dad8e | 281 | |
93044f7b | 282 | ascii_printable = [[NSString alloc] initWithFormat: @"%s", chars]; |
179dad8e CY |
283 | } |
284 | ||
285 | #ifdef NS_IMPL_COCOA | |
286 | NSGlyph glyph = [sfont glyphWithName: ascii_printable]; | |
287 | if (glyph) | |
288 | w = [sfont advancementForGlyph: glyph].width; | |
289 | #endif | |
290 | ||
c0342369 | 291 | if (w < (CGFloat) 0.0) |
179dad8e CY |
292 | { |
293 | NSDictionary *attrsDictionary = | |
294 | [NSDictionary dictionaryWithObject: sfont forKey: NSFontAttributeName]; | |
295 | w = [ascii_printable sizeWithAttributes: attrsDictionary].width; | |
296 | } | |
297 | ||
c0342369 | 298 | return lrint (w / (CGFloat) 95.0); |
8840261a AR |
299 | } |
300 | ||
301 | ||
302 | /* Return whether set1 covers set2 to a reasonable extent given by pct. | |
fe7a3057 | 303 | We check, out of each 16 Unicode char range containing chars in set2, |
8840261a AR |
304 | whether at least one character is present in set1. |
305 | This must be true for pct of the pairs to consider it covering. */ | |
306 | static BOOL | |
307 | ns_charset_covers(NSCharacterSet *set1, NSCharacterSet *set2, float pct) | |
308 | { | |
309 | const unsigned short *bytes1 = [[set1 bitmapRepresentation] bytes]; | |
310 | const unsigned short *bytes2 = [[set2 bitmapRepresentation] bytes]; | |
311 | int i, off = 0, tot = 0; | |
312 | ||
24ef80ae PE |
313 | /* Work around what appears to be a GNUstep bug. |
314 | See <http://bugs.gnu.org/11853>. */ | |
315 | if (! (bytes1 && bytes2)) | |
316 | return NO; | |
317 | ||
8840261a AR |
318 | for (i=0; i<4096; i++, bytes1++, bytes2++) |
319 | if (*bytes2) | |
320 | { | |
321 | tot++; | |
322 | if (*bytes1 == 0) // *bytes1 & *bytes2 != *bytes2 | |
323 | off++; | |
324 | } | |
325 | //fprintf(stderr, "off = %d\ttot = %d\n", off,tot); | |
c0342369 | 326 | return (float)off / tot < 1.0F - pct; |
8840261a AR |
327 | } |
328 | ||
329 | ||
330 | /* Convert :lang property to a script. Use of :lang property by font backend | |
331 | seems to be limited for now (2009/05) to ja, zh, and ko. */ | |
332 | static NSString | |
333 | *ns_lang_to_script (Lisp_Object lang) | |
334 | { | |
0dc8cf50 | 335 | if (!strcmp (SSDATA (SYMBOL_NAME (lang)), "ja")) |
8840261a AR |
336 | return @"han"; |
337 | /* NOTE: ja given for any hanzi that's also a kanji, but Chinese fonts | |
338 | have more characters. */ | |
0dc8cf50 | 339 | else if (!strcmp (SSDATA (SYMBOL_NAME (lang)), "zh")) |
8840261a | 340 | return @"han"; |
0dc8cf50 | 341 | else if (!strcmp (SSDATA (SYMBOL_NAME (lang)), "ko")) |
8840261a AR |
342 | return @"hangul"; |
343 | else | |
344 | return @""; | |
345 | } | |
346 | ||
347 | ||
348 | /* Convert OTF 4-letter script code to emacs script name. (Why can't | |
fe7a3057 | 349 | everyone just use some standard Unicode names for these?) */ |
8840261a AR |
350 | static NSString |
351 | *ns_otf_to_script (Lisp_Object otf) | |
352 | { | |
353 | Lisp_Object script = assq_no_quit (XCAR (otf), Votf_script_alist); | |
354 | return CONSP (script) | |
0dc8cf50 | 355 | ? [NSString stringWithUTF8String: SSDATA (SYMBOL_NAME (XCDR ((script))))] |
8840261a AR |
356 | : @""; |
357 | } | |
358 | ||
359 | ||
87f66bd3 AR |
360 | /* Convert a font registry, such as */ |
361 | static NSString | |
362 | *ns_registry_to_script (char *reg) | |
363 | { | |
364 | Lisp_Object script, r, rts = Vns_reg_to_script; | |
0a4df6a5 | 365 | while (CONSP (rts)) |
87f66bd3 AR |
366 | { |
367 | r = XCAR (XCAR (rts)); | |
fd3ceb09 | 368 | if (!strncmp (SSDATA (r), reg, SBYTES (r))) |
87f66bd3 AR |
369 | { |
370 | script = XCDR (XCAR (rts)); | |
0dc8cf50 | 371 | return [NSString stringWithUTF8String: SSDATA (SYMBOL_NAME (script))]; |
87f66bd3 AR |
372 | } |
373 | rts = XCDR (rts); | |
374 | } | |
375 | return @""; | |
376 | } | |
377 | ||
378 | ||
379 | /* Searches the :script, :lang, and :otf extra-bundle properties of the spec, | |
380 | plus registry regular property, for something that can be mapped to a | |
fe7a3057 | 381 | Unicode script. Empty string returned if no script spec found. */ |
8840261a AR |
382 | static NSString |
383 | *ns_get_req_script (Lisp_Object font_spec) | |
384 | { | |
87f66bd3 | 385 | Lisp_Object reg = AREF (font_spec, FONT_REGISTRY_INDEX); |
8840261a AR |
386 | Lisp_Object extra = AREF (font_spec, FONT_EXTRA_INDEX); |
387 | ||
87f66bd3 | 388 | /* The extra-bundle properties have priority. */ |
8840261a AR |
389 | for ( ; CONSP (extra); extra = XCDR (extra)) |
390 | { | |
391 | Lisp_Object tmp = XCAR (extra); | |
392 | if (CONSP (tmp)) | |
393 | { | |
394 | Lisp_Object key = XCAR (tmp), val = XCDR (tmp); | |
395 | if (EQ (key, QCscript) && SYMBOLP (val)) | |
396 | return [NSString stringWithUTF8String: | |
0dc8cf50 | 397 | SSDATA (SYMBOL_NAME (val))]; |
8840261a AR |
398 | if (EQ (key, QClang) && SYMBOLP (val)) |
399 | return ns_lang_to_script (val); | |
400 | if (EQ (key, QCotf) && CONSP (val) && SYMBOLP (XCAR (val))) | |
401 | return ns_otf_to_script (val); | |
402 | } | |
403 | } | |
87f66bd3 AR |
404 | |
405 | /* If we get here, check the charset portion of the registry. */ | |
406 | if (! NILP (reg)) | |
407 | { | |
408 | /* XXX: iso10646 is passed in for non-ascii latin-1 characters | |
409 | (which causes box rendering if we don't treat it like iso8858-1) | |
410 | but also for ascii (which causes unnecessary font substitution). */ | |
411 | #if 0 | |
412 | if (EQ (reg, Qiso10646_1)) | |
413 | reg = Qiso8859_1; | |
414 | #endif | |
0dc8cf50 | 415 | return ns_registry_to_script (SSDATA (SYMBOL_NAME (reg))); |
87f66bd3 AR |
416 | } |
417 | ||
8840261a AR |
418 | return @""; |
419 | } | |
420 | ||
421 | ||
422 | /* This small function is static in fontset.c. If it can be made public for | |
423 | all ports, remove this, but otherwise it doesn't seem worth the ifdefs. */ | |
424 | static void | |
425 | accumulate_script_ranges (Lisp_Object arg, Lisp_Object range, Lisp_Object val) | |
426 | { | |
427 | if (EQ (XCAR (arg), val)) | |
428 | { | |
429 | if (CONSP (range)) | |
430 | XSETCDR (arg, Fcons (Fcons (XCAR (range), XCDR (range)), XCDR (arg))); | |
431 | else | |
432 | XSETCDR (arg, Fcons (Fcons (range, range), XCDR (arg))); | |
433 | } | |
434 | } | |
435 | ||
436 | ||
fe7a3057 | 437 | /* Use the Unicode range information in Vchar_script_table to convert a script |
8840261a AR |
438 | name into an NSCharacterSet. */ |
439 | static NSCharacterSet | |
440 | *ns_script_to_charset (NSString *scriptName) | |
441 | { | |
442 | NSMutableCharacterSet *charset = [NSMutableCharacterSet new]; | |
443 | Lisp_Object script = intern ([scriptName UTF8String]); | |
444 | Lisp_Object script_list = XCHAR_TABLE (Vchar_script_table)->extras[0]; | |
445 | ||
446 | if (! NILP (Fmemq (script, script_list))) | |
447 | { | |
448 | Lisp_Object ranges, range_list; | |
449 | ||
6c6f1994 | 450 | ranges = list1 (script); |
8840261a AR |
451 | map_char_table (accumulate_script_ranges, Qnil, Vchar_script_table, |
452 | ranges); | |
453 | range_list = Fnreverse (XCDR (ranges)); | |
454 | if (! NILP (range_list)) | |
455 | { | |
456 | for (; CONSP (range_list); range_list = XCDR (range_list)) | |
457 | { | |
458 | int start = XINT (XCAR (XCAR (range_list))); | |
459 | int end = XINT (XCDR (XCAR (range_list))); | |
460 | if (NSFONT_TRACE) | |
461 | debug_print (XCAR (range_list)); | |
462 | if (end < 0x10000) | |
463 | [charset addCharactersInRange: | |
464 | NSMakeRange (start, end-start)]; | |
465 | } | |
466 | } | |
467 | } | |
468 | return charset; | |
a68fda4a AR |
469 | } |
470 | ||
471 | ||
8840261a AR |
472 | /* Return an array of font families containing characters for the given |
473 | script, for the given coverage criterion, including at least LastResort. | |
474 | Results are cached by script for faster access. | |
475 | If none are found, we reduce the percentage and try again, until 5%. | |
476 | This provides a font with at least some characters if such can be found. | |
477 | We don't use isSupersetOfSet: because (a) it doesn't work on Tiger, and | |
fe7a3057 | 478 | (b) need approximate match as fonts covering full Unicode ranges are rare. */ |
8840261a AR |
479 | static NSSet |
480 | *ns_get_covering_families (NSString *script, float pct) | |
481 | { | |
482 | static NSMutableDictionary *scriptToFamilies = nil; | |
483 | NSMutableSet *families; | |
484 | ||
485 | if (NSFONT_TRACE) | |
486 | NSLog(@"Request covering families for script: '%@'", script); | |
487 | ||
488 | if (scriptToFamilies == nil) | |
e41820ee | 489 | scriptToFamilies = [[NSMutableDictionary alloc] init]; |
8840261a AR |
490 | |
491 | if ((families = [scriptToFamilies objectForKey: script]) == nil) | |
492 | { | |
493 | NSFontManager *fontMgr = [NSFontManager sharedFontManager]; | |
494 | NSArray *allFamilies = [fontMgr availableFontFamilies]; | |
495 | ||
496 | if ([script length] == 0) | |
497 | families = [NSMutableSet setWithArray: allFamilies]; | |
498 | else | |
499 | { | |
500 | NSCharacterSet *charset = ns_script_to_charset (script); | |
501 | NSString *family; | |
502 | families = [NSMutableSet setWithCapacity: 10]; | |
503 | while (1) | |
504 | { | |
505 | NSEnumerator *allFamiliesEnum = [allFamilies objectEnumerator]; | |
0dc8cf50 | 506 | while ((family = [allFamiliesEnum nextObject])) |
8840261a AR |
507 | { |
508 | NSCharacterSet *fset = [[fontMgr fontWithFamily: family | |
509 | traits: 0 weight: 5 size: 12.0] coveredCharacterSet]; | |
510 | /* Some fonts on OS X, maybe many on GNUstep, return nil. */ | |
511 | if (fset == nil) | |
512 | fset = [NSCharacterSet characterSetWithRange: | |
513 | NSMakeRange (0, 127)]; | |
514 | if (ns_charset_covers(fset, charset, pct)) | |
515 | [families addObject: family]; | |
516 | } | |
c0342369 JD |
517 | pct -= 0.2F; |
518 | if ([families count] > 0 || pct < 0.05F) | |
8840261a AR |
519 | break; |
520 | } | |
204ee57f | 521 | [charset release]; |
8840261a AR |
522 | } |
523 | #ifdef NS_IMPL_COCOA | |
524 | if ([families count] == 0) | |
525 | [families addObject: @"LastResort"]; | |
526 | #endif | |
527 | [scriptToFamilies setObject: families forKey: script]; | |
528 | } | |
529 | ||
530 | if (NSFONT_TRACE) | |
531 | NSLog(@" returning %d families", [families count]); | |
532 | return families; | |
533 | } | |
534 | ||
535 | ||
536 | /* Implementation for list() and match(). List() can return nil, match() | |
537 | must return something. Strategy is to drop family name from attribute | |
538 | matching set for match. */ | |
a68fda4a | 539 | static Lisp_Object |
8840261a | 540 | ns_findfonts (Lisp_Object font_spec, BOOL isMatch) |
a68fda4a | 541 | { |
8840261a AR |
542 | Lisp_Object tem, list = Qnil; |
543 | NSFontDescriptor *fdesc, *desc; | |
544 | NSMutableSet *fkeys; | |
545 | NSArray *matchingDescs; | |
546 | NSEnumerator *dEnum; | |
547 | NSString *family; | |
548 | NSSet *cFamilies; | |
549 | BOOL foundItal = NO; | |
550 | ||
7bc916b4 | 551 | block_input (); |
8840261a AR |
552 | if (NSFONT_TRACE) |
553 | { | |
554 | fprintf (stderr, "nsfont: %s for fontspec:\n ", | |
555 | (isMatch ? "match" : "list")); | |
556 | debug_print (font_spec); | |
557 | } | |
558 | ||
8840261a AR |
559 | cFamilies = ns_get_covering_families (ns_get_req_script (font_spec), 0.90); |
560 | ||
561 | fdesc = ns_spec_to_descriptor (font_spec); | |
562 | fkeys = [NSMutableSet setWithArray: [[fdesc fontAttributes] allKeys]]; | |
563 | if (isMatch) | |
564 | [fkeys removeObject: NSFontFamilyAttribute]; | |
565 | ||
7bc916b4 | 566 | matchingDescs = [fdesc matchingFontDescriptorsWithMandatoryKeys: fkeys]; |
074d7bb0 | 567 | |
8840261a AR |
568 | if (NSFONT_TRACE) |
569 | NSLog(@"Got desc %@ and found %d matching fonts from it: ", fdesc, | |
570 | [matchingDescs count]); | |
571 | ||
0dc8cf50 | 572 | for (dEnum = [matchingDescs objectEnumerator]; (desc = [dEnum nextObject]);) |
8840261a AR |
573 | { |
574 | if (![cFamilies containsObject: | |
575 | [desc objectForKey: NSFontFamilyAttribute]]) | |
576 | continue; | |
1586503c | 577 | tem = ns_descriptor_to_entity (desc, |
8840261a | 578 | AREF (font_spec, FONT_EXTRA_INDEX), |
1586503c AR |
579 | NULL); |
580 | if (isMatch) | |
581 | return tem; | |
582 | list = Fcons (tem, list); | |
e4e9c24b | 583 | if (fabs (ns_attribute_fvalue (desc, NSFontSlantTrait)) > 0.05) |
8840261a AR |
584 | foundItal = YES; |
585 | } | |
586 | ||
587 | /* Add synthItal member if needed. */ | |
588 | family = [fdesc objectForKey: NSFontFamilyAttribute]; | |
4b7f335c | 589 | if (family != nil && !foundItal && XINT (Flength (list)) > 0) |
8840261a | 590 | { |
204ee57f JD |
591 | NSFontDescriptor *s1 = [NSFontDescriptor new]; |
592 | NSFontDescriptor *sDesc | |
593 | = [[s1 fontDescriptorWithSymbolicTraits: NSFontItalicTrait] | |
594 | fontDescriptorWithFamily: family]; | |
8840261a AR |
595 | list = Fcons (ns_descriptor_to_entity (sDesc, |
596 | AREF (font_spec, FONT_EXTRA_INDEX), | |
597 | "synthItal"), list); | |
204ee57f | 598 | [s1 release]; |
8840261a AR |
599 | } |
600 | ||
7bc916b4 JD |
601 | unblock_input (); |
602 | ||
1395c6f5 | 603 | /* Return something if was a match and nothing found. */ |
1586503c AR |
604 | if (isMatch) |
605 | return ns_fallback_entity (); | |
1395c6f5 | 606 | |
8840261a | 607 | if (NSFONT_TRACE) |
d311d28c PE |
608 | fprintf (stderr, " Returning %"pI"d entities.\n", |
609 | XINT (Flength (list))); | |
8840261a AR |
610 | |
611 | return list; | |
a68fda4a AR |
612 | } |
613 | ||
614 | ||
8840261a | 615 | |
a68fda4a AR |
616 | /* ========================================================================== |
617 | ||
618 | Font driver implementation | |
619 | ||
620 | ========================================================================== */ | |
621 | ||
8840261a | 622 | |
a10c8269 | 623 | static Lisp_Object nsfont_get_cache (struct frame *frame); |
fdb396e2 DA |
624 | static Lisp_Object nsfont_list (struct frame *, Lisp_Object); |
625 | static Lisp_Object nsfont_match (struct frame *, Lisp_Object); | |
626 | static Lisp_Object nsfont_list_family (struct frame *); | |
a10c8269 | 627 | static Lisp_Object nsfont_open (struct frame *f, Lisp_Object font_entity, |
a68fda4a | 628 | int pixel_size); |
a10c8269 | 629 | static void nsfont_close (struct frame *f, struct font *font); |
a68fda4a AR |
630 | static int nsfont_has_char (Lisp_Object entity, int c); |
631 | static unsigned int nsfont_encode_char (struct font *font, int c); | |
632 | static int nsfont_text_extents (struct font *font, unsigned int *code, | |
633 | int nglyphs, struct font_metrics *metrics); | |
634 | static int nsfont_draw (struct glyph_string *s, int from, int to, int x, int y, | |
a864ef14 | 635 | bool with_background); |
a68fda4a AR |
636 | |
637 | struct font_driver nsfont_driver = | |
638 | { | |
facfbbbd | 639 | 0, /* Qns */ |
a68fda4a AR |
640 | 1, /* case sensitive */ |
641 | nsfont_get_cache, | |
642 | nsfont_list, | |
643 | nsfont_match, | |
644 | nsfont_list_family, | |
645 | NULL, /*free_entity */ | |
646 | nsfont_open, | |
647 | nsfont_close, | |
648 | NULL, /* prepare_face */ | |
649 | NULL, /* done_face */ | |
650 | nsfont_has_char, | |
651 | nsfont_encode_char, | |
652 | nsfont_text_extents, | |
653 | nsfont_draw, | |
654 | /* excluded: get_bitmap, free_bitmap, get_outline, free_outline, | |
655 | anchor_point, otf_capability, otf_driver, | |
656 | start_for_frame, end_for_frame, shape */ | |
657 | }; | |
658 | ||
659 | ||
660 | /* Return a cache of font-entities on FRAME. The cache must be a | |
661 | cons whose cdr part is the actual cache area. */ | |
662 | static Lisp_Object | |
a10c8269 | 663 | nsfont_get_cache (struct frame *frame) |
a68fda4a AR |
664 | { |
665 | Display_Info *dpyinfo = FRAME_NS_DISPLAY_INFO (frame); | |
666 | return (dpyinfo->name_list_element); | |
667 | } | |
668 | ||
669 | ||
8840261a AR |
670 | /* List fonts exactly matching with FONT_SPEC on FRAME. The value is a |
671 | **list** of font-entities. This and match () are sole APIs that allocate | |
672 | font-entities. Properties to be considered (2009/05/19) are: | |
673 | regular: foundry, family, adstyle, registry | |
674 | extended: script, lang, otf | |
675 | "Extended" properties are not part of the vector but get stored as | |
676 | lisp properties under FONT_EXTRA_INDEX. | |
677 | ||
678 | The returned entities should have type set (to 'ns), plus the following: | |
679 | foundry, family, adstyle, registry, | |
680 | weight, slant, width, size (0 if scalable), | |
681 | dpi, spacing, avgwidth (0 if scalable) */ | |
a68fda4a | 682 | static Lisp_Object |
fdb396e2 | 683 | nsfont_list (struct frame *f, Lisp_Object font_spec) |
a68fda4a | 684 | { |
fdb396e2 | 685 | return ns_findfonts (font_spec, NO); |
a68fda4a AR |
686 | } |
687 | ||
688 | ||
333f9019 | 689 | /* Return a font entity most closely matching with FONT_SPEC on |
a68fda4a | 690 | FRAME. The closeness is determined by the font backend, thus |
8840261a AR |
691 | `face-font-selection-order' is ignored here. |
692 | Properties to be considered are same as for list(). */ | |
a68fda4a | 693 | static Lisp_Object |
fdb396e2 | 694 | nsfont_match (struct frame *f, Lisp_Object font_spec) |
a68fda4a | 695 | { |
fdb396e2 | 696 | return ns_findfonts (font_spec, YES); |
a68fda4a AR |
697 | } |
698 | ||
699 | ||
700 | /* List available families. The value is a list of family names | |
701 | (symbols). */ | |
702 | static Lisp_Object | |
fdb396e2 | 703 | nsfont_list_family (struct frame *f) |
a68fda4a AR |
704 | { |
705 | Lisp_Object list = Qnil; | |
7bc916b4 | 706 | NSEnumerator *families; |
a68fda4a | 707 | NSString *family; |
7bc916b4 JD |
708 | |
709 | block_input (); | |
710 | families = [[[NSFontManager sharedFontManager] availableFontFamilies] | |
711 | objectEnumerator]; | |
0dc8cf50 | 712 | while ((family = [families nextObject])) |
a68fda4a | 713 | list = Fcons (intern ([family UTF8String]), list); |
df2142db | 714 | /* FIXME: escape the name? */ |
a68fda4a AR |
715 | |
716 | if (NSFONT_TRACE) | |
d311d28c PE |
717 | fprintf (stderr, "nsfont: list families returning %"pI"d entries\n", |
718 | XINT (Flength (list))); | |
a68fda4a | 719 | |
7bc916b4 | 720 | unblock_input (); |
a68fda4a AR |
721 | return list; |
722 | } | |
723 | ||
724 | ||
a68fda4a AR |
725 | /* Open a font specified by FONT_ENTITY on frame F. If the font is |
726 | scalable, open it with PIXEL_SIZE. */ | |
727 | static Lisp_Object | |
a10c8269 | 728 | nsfont_open (struct frame *f, Lisp_Object font_entity, int pixel_size) |
a68fda4a AR |
729 | { |
730 | BOOL synthItal; | |
8840261a | 731 | unsigned int traits = 0; |
a68fda4a AR |
732 | struct nsfont_info *font_info; |
733 | struct font *font; | |
8840261a | 734 | NSFontDescriptor *fontDesc = ns_spec_to_descriptor (font_entity); |
a68fda4a AR |
735 | NSFontManager *fontMgr = [NSFontManager sharedFontManager]; |
736 | NSString *family; | |
737 | NSFont *nsfont, *sfont; | |
738 | Lisp_Object tem; | |
739 | NSRect brect; | |
740 | Lisp_Object font_object; | |
a68fda4a | 741 | int fixLeopardBug; |
a68fda4a | 742 | |
7bc916b4 JD |
743 | block_input (); |
744 | ||
a68fda4a AR |
745 | if (NSFONT_TRACE) |
746 | { | |
747 | fprintf (stderr, "nsfont: open size %d of fontentity:\n ", pixel_size); | |
748 | debug_print (font_entity); | |
749 | } | |
750 | ||
751 | if (pixel_size <= 0) | |
752 | { | |
753 | /* try to get it out of frame params */ | |
754 | Lisp_Object tem = get_frame_param (f, Qfontsize); | |
755 | pixel_size = NILP (tem) ? 0 : XFASTINT (tem); | |
756 | } | |
757 | ||
758 | tem = AREF (font_entity, FONT_ADSTYLE_INDEX); | |
0dc8cf50 | 759 | synthItal = !NILP (tem) && !strncmp ("synthItal", SSDATA (SYMBOL_NAME (tem)), |
a68fda4a | 760 | 9); |
8840261a | 761 | family = ns_get_family (font_entity); |
b9173dc2 AR |
762 | if (family == nil) |
763 | family = [[NSFont userFixedPitchFontOfSize: 0] familyName]; | |
e4e9c24b AR |
764 | /* Should be > 0.23 as some font descriptors (e.g. Terminus) set to that |
765 | when setting family in ns_spec_to_descriptor(). */ | |
c0342369 | 766 | if (ns_attribute_fvalue (fontDesc, NSFontWeightTrait) > 0.50F) |
8840261a | 767 | traits |= NSBoldFontMask; |
c0342369 | 768 | if (fabs (ns_attribute_fvalue (fontDesc, NSFontSlantTrait) > 0.05F)) |
8840261a | 769 | traits |= NSItalicFontMask; |
a68fda4a | 770 | |
8840261a | 771 | /* see http://cocoadev.com/forums/comments.php?DiscussionID=74 */ |
a68fda4a AR |
772 | fixLeopardBug = traits & NSBoldFontMask ? 10 : 5; |
773 | nsfont = [fontMgr fontWithFamily: family | |
774 | traits: traits weight: fixLeopardBug | |
775 | size: pixel_size]; | |
776 | /* if didn't find, try synthetic italic */ | |
8840261a | 777 | if (nsfont == nil && synthItal) |
a68fda4a AR |
778 | { |
779 | nsfont = [fontMgr fontWithFamily: family | |
780 | traits: traits & ~NSItalicFontMask | |
781 | weight: fixLeopardBug size: pixel_size]; | |
782 | } | |
783 | #ifdef NS_IMPL_COCOA | |
784 | /* LastResort not really a family */ | |
785 | if (nsfont == nil && [@"LastResort" isEqualToString: family]) | |
a68fda4a | 786 | nsfont = [NSFont fontWithName: @"LastResort" size: pixel_size]; |
a68fda4a AR |
787 | #endif |
788 | ||
789 | if (nsfont == nil) | |
790 | { | |
791 | message_with_string ("*** Warning: font in family '%s' not found", | |
792 | build_string ([family UTF8String]), 1); | |
793 | nsfont = [NSFont userFixedPitchFontOfSize: pixel_size]; | |
a68fda4a AR |
794 | } |
795 | ||
8d0e382e AR |
796 | if (NSFONT_TRACE) |
797 | NSLog (@"%@\n", nsfont); | |
1bc98b35 | 798 | |
2b9c2e68 JD |
799 | font_object = font_make_object (VECSIZE (struct nsfont_info), |
800 | font_entity, pixel_size); | |
8d0e382e | 801 | font_info = (struct nsfont_info *) XFONT_OBJECT (font_object); |
8840261a | 802 | font = (struct font *) font_info; |
8d0e382e | 803 | if (!font) |
7bc916b4 JD |
804 | { |
805 | unblock_input (); | |
806 | return Qnil; /* FIXME: other terms do, but return Qnil causes segfault */ | |
807 | } | |
a68fda4a | 808 | |
38182d90 PE |
809 | font_info->glyphs = xzalloc (0x100 * sizeof *font_info->glyphs); |
810 | font_info->metrics = xzalloc (0x100 * sizeof *font_info->metrics); | |
a68fda4a | 811 | |
a68fda4a | 812 | /* for metrics */ |
ef446959 JD |
813 | #ifdef NS_IMPL_COCOA |
814 | sfont = [nsfont screenFontWithRenderingMode: | |
815 | NSFontAntialiasedIntegerAdvancementsRenderingMode]; | |
816 | #else | |
a68fda4a | 817 | sfont = [nsfont screenFont]; |
ef446959 JD |
818 | #endif |
819 | ||
a68fda4a AR |
820 | if (sfont == nil) |
821 | sfont = nsfont; | |
822 | ||
823 | /* non-metric backend font struct fields */ | |
824 | font = (struct font *) font_info; | |
825 | font->pixel_size = [sfont pointSize]; | |
826 | font->driver = &nsfont_driver; | |
a68fda4a AR |
827 | font->encoding_charset = -1; |
828 | font->repertory_charset = -1; | |
829 | font->default_ascent = 0; | |
830 | font->vertical_centering = 0; | |
831 | font->baseline_offset = 0; | |
832 | font->relative_compose = 0; | |
833 | font->font_encoder = NULL; | |
834 | ||
a68fda4a AR |
835 | font->props[FONT_FORMAT_INDEX] = Qns; |
836 | font->props[FONT_FILE_INDEX] = Qnil; | |
837 | ||
838 | { | |
a68fda4a | 839 | const char *fontName = [[nsfont fontName] UTF8String]; |
a68fda4a | 840 | |
481ae085 JD |
841 | /* The values specified by fonts are not always exact. For |
842 | * example, a 6x8 font could specify that the descender is | |
843 | * -2.00000405... (represented by 0xc000000220000000). Without | |
844 | * adjustment, the code below would round the descender to -3, | |
845 | * resulting in a font that would be one pixel higher than | |
846 | * intended. */ | |
847 | CGFloat adjusted_descender = [sfont descender] + 0.0001; | |
848 | ||
a68fda4a AR |
849 | #ifdef NS_IMPL_GNUSTEP |
850 | font_info->nsfont = sfont; | |
851 | #else | |
852 | font_info->nsfont = nsfont; | |
853 | #endif | |
854 | [font_info->nsfont retain]; | |
855 | ||
856 | /* set up ns_font (defined in nsgui.h) */ | |
38182d90 | 857 | font_info->name = xstrdup (fontName); |
a68fda4a AR |
858 | font_info->bold = [fontMgr traitsOfFont: nsfont] & NSBoldFontMask; |
859 | font_info->ital = | |
860 | synthItal || ([fontMgr traitsOfFont: nsfont] & NSItalicFontMask); | |
861 | ||
862 | /* Metrics etc.; some fonts return an unusually large max advance, so we | |
863 | only use it for fonts that have wide characters. */ | |
864 | font_info->width = ([sfont numberOfGlyphs] > 2000) ? | |
8840261a | 865 | [sfont maximumAdvancement].width : ns_char_width (sfont, '0'); |
a68fda4a AR |
866 | |
867 | brect = [sfont boundingRectForFont]; | |
a68fda4a | 868 | |
4843aac3 | 869 | font_info->underpos = [sfont underlinePosition]; |
a68fda4a AR |
870 | font_info->underwidth = [sfont underlineThickness]; |
871 | font_info->size = font->pixel_size; | |
a68fda4a AR |
872 | |
873 | /* max bounds */ | |
d55e9c53 | 874 | font_info->max_bounds.ascent = lrint ([sfont ascender]); |
481ae085 | 875 | /* Descender is usually negative. Use floor to avoid |
14a225f9 | 876 | clipping descenders. */ |
d55e9c53 | 877 | font_info->max_bounds.descent = -lrint (floor(adjusted_descender)); |
a68fda4a AR |
878 | font_info->height = |
879 | font_info->max_bounds.ascent + font_info->max_bounds.descent; | |
880 | font_info->max_bounds.width = lrint (font_info->width); | |
881 | font_info->max_bounds.lbearing = lrint (brect.origin.x); | |
882 | font_info->max_bounds.rbearing = | |
c0342369 | 883 | lrint (brect.size.width - (CGFloat) font_info->width); |
a68fda4a AR |
884 | |
885 | #ifdef NS_IMPL_COCOA | |
886 | /* set up synthItal and the CG font */ | |
887 | font_info->synthItal = synthItal; | |
888 | { | |
889 | ATSFontRef atsFont = ATSFontFindFromPostScriptName | |
890 | ((CFStringRef)[nsfont fontName], kATSOptionFlagsDefault); | |
891 | ||
892 | if (atsFont == kATSFontRefUnspecified) | |
893 | { | |
894 | /* see if we can get it by dropping italic (then synthesizing) */ | |
895 | atsFont = ATSFontFindFromPostScriptName ((CFStringRef) | |
896 | [[fontMgr convertFont: nsfont toNotHaveTrait: NSItalicFontMask] | |
897 | fontName], kATSOptionFlagsDefault); | |
898 | if (atsFont != kATSFontRefUnspecified) | |
899 | font_info->synthItal = YES; | |
900 | else | |
901 | { | |
902 | /* last resort fallback */ | |
903 | atsFont = ATSFontFindFromPostScriptName | |
904 | ((CFStringRef)@"Monaco", kATSOptionFlagsDefault); | |
905 | } | |
906 | } | |
907 | font_info->cgfont = CGFontCreateWithPlatformFont ((void*)&atsFont); | |
908 | } | |
909 | #endif | |
910 | ||
911 | /* set up metrics portion of font struct */ | |
14a225f9 | 912 | font->ascent = lrint([sfont ascender]); |
481ae085 | 913 | font->descent = -lrint(floor(adjusted_descender)); |
8840261a | 914 | font->space_width = lrint (ns_char_width (sfont, ' ')); |
a68fda4a | 915 | font->max_width = lrint (font_info->max_bounds.width); |
179dad8e CY |
916 | font->min_width = font->space_width; /* Approximate. */ |
917 | font->average_width = ns_ascii_average_width (sfont); | |
918 | ||
a68fda4a AR |
919 | font->height = lrint (font_info->height); |
920 | font->underline_position = lrint (font_info->underpos); | |
921 | font->underline_thickness = lrint (font_info->underwidth); | |
922 | ||
923 | font->props[FONT_NAME_INDEX] = Ffont_xlfd_name (font_object, Qnil); | |
309f24d1 | 924 | font->props[FONT_FULLNAME_INDEX] = build_unibyte_string (font_info->name); |
a68fda4a | 925 | } |
4d7e6e51 | 926 | unblock_input (); |
a68fda4a AR |
927 | |
928 | return font_object; | |
929 | } | |
930 | ||
931 | ||
932 | /* Close FONT on frame F. */ | |
933 | static void | |
a10c8269 | 934 | nsfont_close (struct frame *f, struct font *font) |
a68fda4a AR |
935 | { |
936 | struct nsfont_info *font_info = (struct nsfont_info *)font; | |
937 | int i; | |
938 | ||
df2142db | 939 | /* FIXME: this occurs apparently due to same failure to detect same font |
8840261a | 940 | that causes need for cache in nsfont_open () */ |
a68fda4a AR |
941 | if (!font_info) |
942 | return; | |
943 | ||
944 | for (i =0; i<0x100; i++) | |
945 | { | |
5f445726 JM |
946 | xfree (font_info->glyphs[i]); |
947 | xfree (font_info->metrics[i]); | |
a68fda4a AR |
948 | } |
949 | [font_info->nsfont release]; | |
950 | #ifdef NS_IMPL_COCOA | |
8840261a | 951 | CGFontRelease (font_info->cgfont); |
a68fda4a | 952 | #endif |
8840261a AR |
953 | xfree (font_info->name); |
954 | xfree (font_info); | |
a68fda4a AR |
955 | } |
956 | ||
957 | ||
958 | /* If FONT_ENTITY has a glyph for character C (Unicode code point), | |
959 | return 1. If not, return 0. If a font must be opened to check | |
960 | it, return -1. */ | |
961 | static int | |
962 | nsfont_has_char (Lisp_Object entity, int c) | |
963 | { | |
964 | return -1; | |
965 | } | |
966 | ||
967 | ||
968 | /* Return a glyph code of FONT for character C (Unicode code point). | |
969 | If FONT doesn't have such a glyph, return FONT_INVALID_CODE. */ | |
970 | static unsigned int | |
971 | nsfont_encode_char (struct font *font, int c) | |
972 | { | |
973 | struct nsfont_info *font_info = (struct nsfont_info *)font; | |
974 | unsigned char high = (c & 0xff00) >> 8, low = c & 0x00ff; | |
975 | unsigned short g; | |
976 | ||
977 | if (c > 0xFFFF) | |
978 | return FONT_INVALID_CODE; | |
979 | ||
980 | /* did we already cache this block? */ | |
981 | if (!font_info->glyphs[high]) | |
982 | ns_uni_to_glyphs (font_info, high); | |
983 | ||
984 | g = font_info->glyphs[high][low]; | |
0ce9f6de | 985 | return g == INVALID_GLYPH ? FONT_INVALID_CODE : g; |
a68fda4a AR |
986 | } |
987 | ||
988 | ||
989 | /* Perform the size computation of glyphs of FONT and fill in members | |
990 | of METRICS. The glyphs are specified by their glyph codes in | |
991 | CODE (length NGLYPHS). */ | |
992 | static int | |
993 | nsfont_text_extents (struct font *font, unsigned int *code, int nglyphs, | |
994 | struct font_metrics *metrics) | |
995 | { | |
996 | struct nsfont_info *font_info = (struct nsfont_info *)font; | |
997 | struct font_metrics *pcm; | |
998 | unsigned char high, low; | |
999 | int totalWidth = 0; | |
1000 | int i; | |
1001 | ||
72af86bd | 1002 | memset (metrics, 0, sizeof (struct font_metrics)); |
a68fda4a AR |
1003 | |
1004 | for (i =0; i<nglyphs; i++) | |
1005 | { | |
1006 | /* get metrics for this glyph, filling cache if need be */ | |
df2142db AR |
1007 | /* TODO: get metrics for whole string from an NSLayoutManager |
1008 | (if not too slow) */ | |
a68fda4a AR |
1009 | high = (code[i] & 0xFF00) >> 8; |
1010 | low = code[i] & 0x00FF; | |
1011 | if (!font_info->metrics[high]) | |
1012 | ns_glyph_metrics (font_info, high); | |
1013 | pcm = &(font_info->metrics[high][low]); | |
1014 | ||
1015 | if (metrics->lbearing > totalWidth + pcm->lbearing) | |
1016 | metrics->lbearing = totalWidth + pcm->lbearing; | |
1017 | if (metrics->rbearing < totalWidth + pcm->rbearing) | |
1018 | metrics->rbearing = totalWidth + pcm->rbearing; | |
1019 | if (metrics->ascent < pcm->ascent) | |
1020 | metrics->ascent = pcm->ascent; | |
1021 | if (metrics->descent < pcm->descent) | |
1022 | metrics->descent = pcm->descent; | |
1023 | ||
1024 | totalWidth += pcm->width; | |
1025 | } | |
1026 | ||
1027 | metrics->width = totalWidth; | |
1028 | ||
1029 | return totalWidth; /* not specified in doc, but xfont.c does it */ | |
1030 | } | |
1031 | ||
1032 | ||
1033 | /* Draw glyphs between FROM and TO of S->char2b at (X Y) pixel | |
a864ef14 PE |
1034 | position of frame F with S->FACE and S->GC. If WITH_BACKGROUND, |
1035 | fill the background in advance. It is assured that WITH_BACKGROUND | |
1036 | is false when (FROM > 0 || TO < S->nchars). */ | |
a68fda4a AR |
1037 | static int |
1038 | nsfont_draw (struct glyph_string *s, int from, int to, int x, int y, | |
a864ef14 | 1039 | bool with_background) |
a68fda4a AR |
1040 | /* NOTE: focus and clip must be set |
1041 | also, currently assumed (true in nsterm.m call) from ==0, to ==nchars */ | |
1042 | { | |
c0342369 JD |
1043 | static unsigned char cbuf[1024]; |
1044 | unsigned char *c = cbuf; | |
a68fda4a AR |
1045 | #ifdef NS_IMPL_GNUSTEP |
1046 | static float advances[1024]; | |
1047 | float *adv = advances; | |
1048 | #else | |
1049 | static CGSize advances[1024]; | |
1050 | CGSize *adv = advances; | |
1051 | #endif | |
1052 | struct face *face; | |
1053 | NSRect r; | |
1054 | struct nsfont_info *font = ns_tmp_font; | |
1055 | NSColor *col, *bgCol; | |
1056 | unsigned short *t = s->char2b; | |
1057 | int i, len; | |
8840261a AR |
1058 | char isComposite = s->first_glyph->type == COMPOSITE_GLYPH; |
1059 | int end = isComposite ? s->cmp_to : s->nchars; | |
a68fda4a | 1060 | |
7bc916b4 | 1061 | block_input (); |
a68fda4a AR |
1062 | /* Select face based on input flags */ |
1063 | switch (ns_tmp_flags) | |
1064 | { | |
1065 | case NS_DUMPGLYPH_CURSOR: | |
1066 | face = s->face; | |
1067 | break; | |
1068 | case NS_DUMPGLYPH_MOUSEFACE: | |
80417b95 | 1069 | face = FACE_FROM_ID (s->f, MOUSE_HL_INFO (s->f)->mouse_face_face_id); |
a68fda4a AR |
1070 | if (!face) |
1071 | face = FACE_FROM_ID (s->f, MOUSE_FACE_ID); | |
1072 | break; | |
1073 | default: | |
1074 | face = s->face; | |
1075 | } | |
1076 | ||
1077 | r.origin.x = s->x; | |
1078 | if (s->face->box != FACE_NO_BOX && s->first_glyph->left_box_line_p) | |
1079 | r.origin.x += abs (s->face->box_line_width); | |
1080 | ||
1081 | r.origin.y = s->y; | |
1082 | r.size.height = FONT_HEIGHT (font); | |
1083 | ||
1084 | /* Convert UTF-16 (?) to UTF-8 and determine advances. Note if we just ask | |
1085 | NS to render the string, it will come out differently from the individual | |
1086 | character widths added up because of layout processing. */ | |
1087 | { | |
a68fda4a AR |
1088 | int cwidth, twidth = 0; |
1089 | int hi, lo; | |
df2142db | 1090 | /* FIXME: composition: no vertical displacement is considered. */ |
81cfe31c | 1091 | t += s->cmp_from; /* advance into composition */ |
8840261a | 1092 | for (i = s->cmp_from; i < end; i++, t++) |
a68fda4a AR |
1093 | { |
1094 | hi = (*t & 0xFF00) >> 8; | |
1095 | lo = *t & 0x00FF; | |
1096 | if (isComposite) | |
1097 | { | |
8840261a AR |
1098 | if (!s->first_glyph->u.cmp.automatic) |
1099 | cwidth = s->cmp->offsets[i * 2] /* (H offset) */ - twidth; | |
1100 | else | |
1101 | { | |
1102 | Lisp_Object gstring = composition_gstring_from_id (s->cmp_id); | |
1103 | Lisp_Object glyph = LGSTRING_GLYPH (gstring, i); | |
1104 | if (NILP (LGLYPH_ADJUSTMENT (glyph))) | |
1105 | cwidth = LGLYPH_WIDTH (glyph); | |
1106 | else | |
1107 | { | |
1108 | cwidth = LGLYPH_WADJUST (glyph); | |
1109 | #ifdef NS_IMPL_GNUSTEP | |
1110 | *(adv-1) += LGLYPH_XOFF (glyph); | |
1111 | #else | |
1112 | (*(adv-1)).width += LGLYPH_XOFF (glyph); | |
1113 | #endif | |
1114 | } | |
1115 | } | |
a68fda4a AR |
1116 | } |
1117 | else | |
1118 | { | |
df2142db | 1119 | if (!font->metrics[hi]) /* FIXME: why/how can we need this now? */ |
a68fda4a AR |
1120 | ns_glyph_metrics (font, hi); |
1121 | cwidth = font->metrics[hi][lo].width; | |
1122 | } | |
1123 | twidth += cwidth; | |
1124 | #ifdef NS_IMPL_GNUSTEP | |
1125 | *adv++ = cwidth; | |
1126 | CHAR_STRING_ADVANCE (*t, c); /* this converts the char to UTF-8 */ | |
1127 | #else | |
1128 | (*adv++).width = cwidth; | |
1129 | #endif | |
1130 | } | |
1131 | len = adv - advances; | |
1132 | r.size.width = twidth; | |
1133 | *c = 0; | |
1134 | } | |
1135 | ||
1136 | /* fill background if requested */ | |
8840261a | 1137 | if (with_background && !isComposite) |
a68fda4a AR |
1138 | { |
1139 | NSRect br = r; | |
1140 | int fibw = FRAME_INTERNAL_BORDER_WIDTH (s->f); | |
1141 | int mbox_line_width = max (s->face->box_line_width, 0); | |
1142 | ||
1143 | if (s->row->full_width_p) | |
1144 | { | |
1145 | if (br.origin.x <= fibw + 1 + mbox_line_width) | |
1146 | { | |
1147 | br.size.width += br.origin.x - mbox_line_width; | |
1148 | br.origin.x = mbox_line_width; | |
1149 | } | |
1150 | if (FRAME_PIXEL_WIDTH (s->f) - (br.origin.x + br.size.width) | |
1151 | <= fibw+1) | |
1152 | br.size.width += fibw; | |
1153 | } | |
1154 | if (s->face->box == FACE_NO_BOX) | |
1155 | { | |
1156 | /* expand unboxed top row over internal border */ | |
1157 | if (br.origin.y <= fibw + 1 + mbox_line_width) | |
1158 | { | |
1159 | br.size.height += br.origin.y; | |
1160 | br.origin.y = 0; | |
1161 | } | |
1162 | } | |
1163 | else | |
1164 | { | |
1165 | int correction = abs (s->face->box_line_width)+1; | |
1166 | br.origin.y += correction; | |
1167 | br.size.height -= 2*correction; | |
1168 | br.origin.x += correction; | |
1169 | br.size.width -= 2*correction; | |
1170 | } | |
1171 | ||
1172 | if (!s->face->stipple) | |
45d325c4 | 1173 | [(NS_FACE_BACKGROUND (face) != 0 |
a68fda4a AR |
1174 | ? ns_lookup_indexed_color (NS_FACE_BACKGROUND (face), s->f) |
1175 | : FRAME_BACKGROUND_COLOR (s->f)) set]; | |
1176 | else | |
1177 | { | |
1178 | struct ns_display_info *dpyinfo = FRAME_NS_DISPLAY_INFO (s->f); | |
1179 | [[dpyinfo->bitmaps[face->stipple-1].img stippleMask] set]; | |
1180 | } | |
1181 | NSRectFill (br); | |
1182 | } | |
1183 | ||
1184 | ||
1185 | /* set up for character rendering */ | |
d55e9c53 | 1186 | r.origin.y = s->ybase; |
a68fda4a | 1187 | |
15034960 | 1188 | col = (NS_FACE_FOREGROUND (face) != 0 |
a68fda4a AR |
1189 | ? ns_lookup_indexed_color (NS_FACE_FOREGROUND (face), s->f) |
1190 | : FRAME_FOREGROUND_COLOR (s->f)); | |
df2142db | 1191 | /* FIXME: find another way to pass this */ |
a68fda4a | 1192 | bgCol = (ns_tmp_flags != NS_DUMPGLYPH_FOREGROUND ? nil |
45d325c4 | 1193 | : (NS_FACE_BACKGROUND (face) != 0 |
a68fda4a AR |
1194 | ? ns_lookup_indexed_color (NS_FACE_BACKGROUND (face), s->f) |
1195 | : FRAME_BACKGROUND_COLOR (s->f))); | |
1196 | ||
1197 | /* render under GNUstep using DPS */ | |
1198 | #ifdef NS_IMPL_GNUSTEP | |
1199 | { | |
1200 | NSGraphicsContext *context = GSCurrentContext (); | |
1201 | ||
1202 | DPSgsave (context); | |
1203 | [font->nsfont set]; | |
1204 | ||
1205 | /* do erase if "foreground" mode */ | |
1206 | if (bgCol != nil) | |
1207 | { | |
1208 | [bgCol set]; | |
1209 | DPSmoveto (context, r.origin.x, r.origin.y); | |
1210 | /*[context GSSetTextDrawingMode: GSTextFillStroke]; /// not implemented yet */ | |
c0342369 | 1211 | DPSxshow (context, (const char *) cbuf, advances, len); |
a68fda4a AR |
1212 | DPSstroke (context); |
1213 | [col set]; | |
1214 | /*[context GSSetTextDrawingMode: GSTextFill]; /// not implemented yet */ | |
1215 | } | |
1216 | ||
4843aac3 | 1217 | [col set]; |
a68fda4a AR |
1218 | |
1219 | /* draw with DPSxshow () */ | |
1220 | DPSmoveto (context, r.origin.x, r.origin.y); | |
c0342369 | 1221 | DPSxshow (context, (const char *) cbuf, advances, len); |
a68fda4a AR |
1222 | DPSstroke (context); |
1223 | ||
1224 | DPSgrestore (context); | |
a68fda4a AR |
1225 | } |
1226 | ||
1227 | #else /* NS_IMPL_COCOA */ | |
1228 | { | |
1229 | CGContextRef gcontext = | |
1230 | [[NSGraphicsContext currentContext] graphicsPort]; | |
1231 | static CGAffineTransform fliptf; | |
1232 | static BOOL firstTime = YES; | |
1233 | ||
1234 | if (firstTime) | |
1235 | { | |
1236 | firstTime = NO; | |
1237 | fliptf = CGAffineTransformMakeScale (1.0, -1.0); | |
1238 | } | |
1239 | ||
1240 | CGContextSaveGState (gcontext); | |
1241 | ||
1242 | fliptf.c = font->synthItal ? Fix2X (kATSItalicQDSkew) : 0.0; | |
1243 | ||
1244 | CGContextSetFont (gcontext, font->cgfont); | |
1245 | CGContextSetFontSize (gcontext, font->size); | |
cf2fdcfb | 1246 | if (NILP (ns_antialias_text) || font->size <= ns_antialias_threshold) |
a68fda4a AR |
1247 | CGContextSetShouldAntialias (gcontext, 0); |
1248 | else | |
1249 | CGContextSetShouldAntialias (gcontext, 1); | |
a68fda4a AR |
1250 | |
1251 | CGContextSetTextMatrix (gcontext, fliptf); | |
1252 | ||
1253 | if (bgCol != nil) | |
1254 | { | |
1255 | /* foreground drawing; erase first to avoid overstrike */ | |
1256 | [bgCol set]; | |
1257 | CGContextSetTextDrawingMode (gcontext, kCGTextFillStroke); | |
1258 | CGContextSetTextPosition (gcontext, r.origin.x, r.origin.y); | |
1259 | CGContextShowGlyphsWithAdvances (gcontext, s->char2b, advances, len); | |
1260 | CGContextSetTextDrawingMode (gcontext, kCGTextFill); | |
1261 | } | |
1262 | ||
4843aac3 | 1263 | [col set]; |
a68fda4a AR |
1264 | |
1265 | CGContextSetTextPosition (gcontext, r.origin.x, r.origin.y); | |
93c7fcf8 | 1266 | CGContextShowGlyphsWithAdvances (gcontext, s->char2b + s->cmp_from, |
a68fda4a AR |
1267 | advances, len); |
1268 | ||
1269 | if (face->overstrike) | |
1270 | { | |
1271 | CGContextSetTextPosition (gcontext, r.origin.x+0.5, r.origin.y); | |
93c7fcf8 | 1272 | CGContextShowGlyphsWithAdvances (gcontext, s->char2b + s->cmp_from, |
a68fda4a AR |
1273 | advances, len); |
1274 | } | |
1275 | ||
1276 | CGContextRestoreGState (gcontext); | |
a68fda4a AR |
1277 | } |
1278 | #endif /* NS_IMPL_COCOA */ | |
4843aac3 AA |
1279 | |
1280 | /* Draw underline, overline, strike-through. */ | |
1281 | ns_draw_text_decoration (s, face, col, r.size.width, r.origin.x); | |
1282 | ||
7bc916b4 | 1283 | unblock_input (); |
3fdebbf9 | 1284 | return to-from; |
a68fda4a AR |
1285 | } |
1286 | ||
1287 | ||
a68fda4a AR |
1288 | |
1289 | /* ========================================================================== | |
1290 | ||
1291 | Font glyph and metrics caching functions | |
1292 | ||
1293 | ========================================================================== */ | |
1294 | ||
1295 | /* Find and cache corresponding glyph codes for unicode values in given | |
1296 | hi-byte block of 256. */ | |
1297 | static void | |
1298 | ns_uni_to_glyphs (struct nsfont_info *font_info, unsigned char block) | |
1299 | { | |
1300 | #ifdef NS_IMPL_COCOA | |
1301 | static EmacsGlyphStorage *glyphStorage; | |
1302 | static char firstTime = 1; | |
1303 | #endif | |
1304 | unichar *unichars = xmalloc (0x101 * sizeof (unichar)); | |
1305 | unsigned int i, g, idx; | |
1306 | unsigned short *glyphs; | |
1307 | ||
1308 | if (NSFONT_TRACE) | |
1309 | fprintf (stderr, "%p\tFinding glyphs for glyphs in block %d\n", | |
1310 | font_info, block); | |
1311 | ||
4d7e6e51 | 1312 | block_input (); |
a68fda4a AR |
1313 | |
1314 | #ifdef NS_IMPL_COCOA | |
1315 | if (firstTime) | |
1316 | { | |
1317 | firstTime = 0; | |
1318 | glyphStorage = [[EmacsGlyphStorage alloc] initWithCapacity: 0x100]; | |
1319 | } | |
1320 | #endif | |
1321 | ||
1322 | font_info->glyphs[block] = xmalloc (0x100 * sizeof (unsigned short)); | |
1323 | if (!unichars || !(font_info->glyphs[block])) | |
1088b922 | 1324 | emacs_abort (); |
a68fda4a | 1325 | |
fe7a3057 | 1326 | /* create a string containing all Unicode characters in this block */ |
204ee57f | 1327 | for (idx = block<<8, i = 0; i < 0x100; idx++, i++) |
a68fda4a AR |
1328 | if (idx < 0xD800 || idx > 0xDFFF) |
1329 | unichars[i] = idx; | |
1330 | else | |
1331 | unichars[i] = 0xFEFF; | |
1332 | unichars[0x100] = 0; | |
1333 | ||
1334 | { | |
1335 | #ifdef NS_IMPL_COCOA | |
1336 | NSString *allChars = [[NSString alloc] | |
1337 | initWithCharactersNoCopy: unichars | |
1338 | length: 0x100 | |
1339 | freeWhenDone: NO]; | |
1340 | NSGlyphGenerator *glyphGenerator = [NSGlyphGenerator sharedGlyphGenerator]; | |
1341 | /*NSCharacterSet *coveredChars = [nsfont coveredCharacterSet]; */ | |
1342 | unsigned int numGlyphs = [font_info->nsfont numberOfGlyphs]; | |
204ee57f | 1343 | NSUInteger gInd = 0, cInd = 0; |
a68fda4a AR |
1344 | |
1345 | [glyphStorage setString: allChars font: font_info->nsfont]; | |
1346 | [glyphGenerator generateGlyphsForGlyphStorage: glyphStorage | |
1347 | desiredNumberOfCharacters: glyphStorage->maxChar | |
1348 | glyphIndex: &gInd characterIndex: &cInd]; | |
1349 | #endif | |
1350 | glyphs = font_info->glyphs[block]; | |
204ee57f | 1351 | for (i = 0; i < 0x100; i++, glyphs++) |
a68fda4a AR |
1352 | { |
1353 | #ifdef NS_IMPL_GNUSTEP | |
1354 | g = unichars[i]; | |
1355 | #else | |
1356 | g = glyphStorage->cglyphs[i]; | |
df2142db | 1357 | /* TODO: is this a good check? maybe need to use coveredChars.. */ |
0ce9f6de JD |
1358 | if (g > numGlyphs || g == NSNullGlyph) |
1359 | g = INVALID_GLYPH; /* hopefully unused... */ | |
a68fda4a AR |
1360 | #endif |
1361 | *glyphs = g; | |
1362 | } | |
1363 | ||
1364 | #ifdef NS_IMPL_COCOA | |
1365 | [allChars release]; | |
1366 | #endif | |
1367 | } | |
1368 | ||
4d7e6e51 | 1369 | unblock_input (); |
a68fda4a AR |
1370 | xfree (unichars); |
1371 | } | |
1372 | ||
1373 | ||
1374 | /* Determine and cache metrics for corresponding glyph codes in given | |
1375 | hi-byte block of 256. */ | |
1376 | static void | |
1377 | ns_glyph_metrics (struct nsfont_info *font_info, unsigned char block) | |
1378 | { | |
1379 | unsigned int i, g; | |
1380 | unsigned int numGlyphs = [font_info->nsfont numberOfGlyphs]; | |
1381 | NSFont *sfont; | |
1382 | struct font_metrics *metrics; | |
1383 | ||
1384 | if (NSFONT_TRACE) | |
1385 | fprintf (stderr, "%p\tComputing metrics for glyphs in block %d\n", | |
1386 | font_info, block); | |
1387 | ||
1388 | #ifdef NS_IMPL_GNUSTEP | |
1389 | /* not implemented yet (as of startup 0.18), so punt */ | |
1390 | if (numGlyphs == 0) | |
1391 | numGlyphs = 0x10000; | |
1392 | #endif | |
1393 | ||
4d7e6e51 | 1394 | block_input (); |
ef446959 JD |
1395 | #ifdef NS_IMPL_COCOA |
1396 | sfont = [font_info->nsfont screenFontWithRenderingMode: | |
1397 | NSFontAntialiasedIntegerAdvancementsRenderingMode]; | |
1398 | #else | |
1399 | sfont = [font_info->nsfont screenFont]; | |
1400 | #endif | |
a68fda4a | 1401 | |
38182d90 | 1402 | font_info->metrics[block] = xzalloc (0x100 * sizeof (struct font_metrics)); |
a68fda4a | 1403 | if (!(font_info->metrics[block])) |
1088b922 | 1404 | emacs_abort (); |
a68fda4a AR |
1405 | |
1406 | metrics = font_info->metrics[block]; | |
1407 | for (g = block<<8, i =0; i<0x100 && g < numGlyphs; g++, i++, metrics++) | |
1408 | { | |
c0342369 | 1409 | CGFloat w, lb, rb; |
a68fda4a AR |
1410 | NSRect r = [sfont boundingRectForGlyph: g]; |
1411 | ||
6e2f42b4 | 1412 | w = max ([sfont advancementForGlyph: g].width, 2.0); |
a68fda4a AR |
1413 | metrics->width = lrint (w); |
1414 | ||
1415 | lb = r.origin.x; | |
1416 | rb = r.size.width - w; | |
b826986f | 1417 | // Add to bearing for LCD smoothing. We don't know if it is there. |
a68fda4a | 1418 | if (lb < 0) |
b826986f | 1419 | metrics->lbearing = round (lb - LCD_SMOOTHING_MARGIN); |
a68fda4a | 1420 | if (font_info->ital) |
c0342369 | 1421 | rb += (CGFloat) (0.22F * font_info->height); |
b826986f | 1422 | metrics->rbearing = lrint (w + rb + LCD_SMOOTHING_MARGIN); |
a68fda4a AR |
1423 | |
1424 | metrics->descent = r.origin.y < 0 ? -r.origin.y : 0; | |
1425 | /*lrint (hshrink * [sfont ascender] + expand * hd/2); */ | |
1426 | metrics->ascent = r.size.height - metrics->descent; | |
1427 | /*-lrint (hshrink* [sfont descender] - expand * hd/2); */ | |
1428 | } | |
4d7e6e51 | 1429 | unblock_input (); |
a68fda4a AR |
1430 | } |
1431 | ||
1432 | ||
1433 | #ifdef NS_IMPL_COCOA | |
1434 | /* helper for font glyph setup */ | |
1435 | @implementation EmacsGlyphStorage | |
1436 | ||
1437 | - init | |
1438 | { | |
1439 | return [self initWithCapacity: 1024]; | |
1440 | } | |
1441 | ||
1442 | - initWithCapacity: (unsigned long) c | |
1443 | { | |
1444 | self = [super init]; | |
1445 | maxChar = 0; | |
1446 | maxGlyph = 0; | |
1447 | dict = [NSMutableDictionary new]; | |
38182d90 | 1448 | cglyphs = xmalloc (c * sizeof (CGGlyph)); |
a68fda4a AR |
1449 | return self; |
1450 | } | |
1451 | ||
1452 | - (void) dealloc | |
1453 | { | |
1454 | if (attrStr != nil) | |
1455 | [attrStr release]; | |
1456 | [dict release]; | |
1457 | xfree (cglyphs); | |
1458 | [super dealloc]; | |
1459 | } | |
1460 | ||
1461 | - (void) setString: (NSString *)str font: (NSFont *)font | |
1462 | { | |
1463 | [dict setObject: font forKey: NSFontAttributeName]; | |
204ee57f JD |
1464 | if (attrStr != nil) |
1465 | [attrStr release]; | |
a68fda4a AR |
1466 | attrStr = [[NSAttributedString alloc] initWithString: str attributes: dict]; |
1467 | maxChar = [str length]; | |
1468 | maxGlyph = 0; | |
1469 | } | |
1470 | ||
1471 | /* NSGlyphStorage protocol */ | |
e28db5bc | 1472 | - (NSUInteger)layoutOptions |
a68fda4a AR |
1473 | { |
1474 | return 0; | |
1475 | } | |
1476 | ||
1477 | - (NSAttributedString *)attributedString | |
1478 | { | |
1479 | return attrStr; | |
1480 | } | |
1481 | ||
e28db5bc AR |
1482 | - (void)insertGlyphs: (const NSGlyph *)glyphs length: (NSUInteger)length |
1483 | forStartingGlyphAtIndex: (NSUInteger)glyphIndex | |
1484 | characterIndex: (NSUInteger)charIndex | |
a68fda4a AR |
1485 | { |
1486 | len = glyphIndex+length; | |
0ce9f6de | 1487 | for (i =glyphIndex; i<len; i++) |
a68fda4a AR |
1488 | cglyphs[i] = glyphs[i-glyphIndex]; |
1489 | if (len > maxGlyph) | |
1490 | maxGlyph = len; | |
1491 | } | |
1492 | ||
e28db5bc AR |
1493 | - (void)setIntAttribute: (NSInteger)attributeTag value: (NSInteger)val |
1494 | forGlyphAtIndex: (NSUInteger)glyphIndex | |
a68fda4a AR |
1495 | { |
1496 | return; | |
1497 | } | |
1498 | ||
1499 | @end | |
1500 | #endif /* NS_IMPL_COCOA */ | |
1501 | ||
1502 | ||
1503 | /* Debugging */ | |
1504 | void | |
8840261a | 1505 | ns_dump_glyphstring (struct glyph_string *s) |
a68fda4a AR |
1506 | { |
1507 | int i; | |
1508 | ||
8840261a AR |
1509 | fprintf (stderr, "Glyph string len = %d at (%d, %d) overhang (%d, %d)," |
1510 | "overlap = %d, bg_filled = %d:", | |
a68fda4a AR |
1511 | s->nchars, s->x, s->y, s->left_overhang, s->right_overhang, |
1512 | s->row->overlapping_p, s->background_filled_p); | |
1513 | for (i =0; i<s->nchars; i++) | |
1514 | fprintf (stderr, "%c", s->first_glyph[i].u.ch); | |
1515 | fprintf (stderr, "\n"); | |
1516 | } | |
1517 | ||
1518 | ||
a68fda4a | 1519 | void |
3d608a86 | 1520 | syms_of_nsfont (void) |
a68fda4a AR |
1521 | { |
1522 | nsfont_driver.type = Qns; | |
1523 | register_font_driver (&nsfont_driver, NULL); | |
719b0aa5 JD |
1524 | DEFSYM (Qcondensed, "condensed"); |
1525 | DEFSYM (Qexpanded, "expanded"); | |
a68fda4a AR |
1526 | DEFSYM (Qapple, "apple"); |
1527 | DEFSYM (Qroman, "roman"); | |
1528 | DEFSYM (Qmedium, "medium"); | |
fb9d0f5a | 1529 | DEFVAR_LISP ("ns-reg-to-script", Vns_reg_to_script, |
fe7a3057 | 1530 | doc: /* Internal use: maps font registry to Unicode script. */); |
179dad8e CY |
1531 | |
1532 | ascii_printable = NULL; | |
a68fda4a | 1533 | } |