Commit | Line | Data |
---|---|---|
82641697 GM |
1 | /* xfaces.c -- "Face" primitives. |
2 | Copyright (C) 1993, 1994, 1998, 1999 Free Software Foundation. | |
7b7739b1 | 3 | |
c115973b JB |
4 | This file is part of GNU Emacs. |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
7b7739b1 | 8 | the Free Software Foundation; either version 2, or (at your option) |
c115973b JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
c115973b | 20 | |
82641697 GM |
21 | /* New face implementation by Gerd Moellmann <gerd@gnu.org>. */ |
22 | ||
23 | /* Faces. | |
24 | ||
25 | When using Emacs with X, the display style of characters can be | |
26 | changed by defining `faces'. Each face can specify the following | |
27 | display attributes: | |
28 | ||
29 | 1. Font family or fontset alias name. | |
30 | ||
31 | 2. Relative proportionate width, aka character set width or set | |
32 | width (swidth), e.g. `semi-compressed'. | |
33 | ||
34 | 3. Font height in 1/10pt | |
35 | ||
36 | 4. Font weight, e.g. `bold'. | |
37 | ||
38 | 5. Font slant, e.g. `italic'. | |
39 | ||
40 | 6. Foreground color. | |
41 | ||
42 | 7. Background color. | |
43 | ||
44 | 8. Whether or not characters should be underlined, and in what color. | |
45 | ||
46 | 9. Whether or not characters should be displayed in inverse video. | |
47 | ||
48 | 10. A background stipple, a bitmap. | |
49 | ||
50 | 11. Whether or not characters should be overlined, and in what color. | |
51 | ||
52 | 12. Whether or not characters should be strike-through, and in what | |
53 | color. | |
54 | ||
55 | 13. Whether or not a box should be drawn around characters, the box | |
56 | type, and, for simple boxes, in what color. | |
57 | ||
58 | Faces are frame-local by nature because Emacs allows to define the | |
59 | same named face (face names are symbols) differently for different | |
60 | frames. Each frame has an alist of face definitions for all named | |
61 | faces. The value of a named face in such an alist is a Lisp vector | |
62 | with the symbol `face' in slot 0, and a slot for each each of the | |
63 | face attributes mentioned above. | |
64 | ||
65 | There is also a global face alist `Vface_new_frame_defaults'. Face | |
66 | definitions from this list are used to initialize faces of newly | |
67 | created frames. | |
68 | ||
69 | A face doesn't have to specify all attributes. Those not specified | |
70 | have a value of `unspecified'. Faces specifying all attributes are | |
71 | called `fully-specified'. | |
72 | ||
73 | ||
74 | Face merging. | |
75 | ||
76 | The display style of a given character in the text is determined by | |
77 | combining several faces. This process is called `face merging'. | |
78 | Any aspect of the display style that isn't specified by overlays or | |
79 | text properties is taken from the `default' face. Since it is made | |
80 | sure that the default face is always fully-specified, face merging | |
81 | always results in a fully-specified face. | |
82 | ||
83 | ||
84 | Face realization. | |
85 | ||
86 | After all face attributes for a character have been determined by | |
87 | merging faces of that character, that face is `realized'. The | |
88 | realization process maps face attributes to what is physically | |
89 | available on the system where Emacs runs. The result is a | |
90 | `realized face' in form of a struct face which is stored in the | |
91 | face cache of the frame on which it was realized. | |
92 | ||
93 | Face realization is done in the context of the charset of the | |
94 | character to display because different fonts and encodings are used | |
95 | for different charsets. In other words, for characters of | |
96 | different charsets, different realized faces are needed to display | |
97 | them. | |
98 | ||
99 | Except for composite characters (CHARSET_COMPOSITION), faces are | |
100 | always realized for a specific character set and contain a specific | |
101 | font, even if the face being realized specifies a fontset (see | |
102 | `font selection' below). The reason is that the result of the new | |
103 | font selection stage is better than what can be done with | |
104 | statically defined font name patterns in fontsets. | |
105 | ||
106 | ||
107 | Unibyte text. | |
108 | ||
109 | In unibyte text, Emacs' charsets aren't applicable; function | |
110 | `char-charset' reports CHARSET_ASCII for all characters, including | |
111 | those > 0x7f. The X registry and encoding of fonts to use is | |
112 | determined from the variable `x-unibyte-registry-and-encoding' in | |
113 | this case. The variable is initialized at Emacs startup time from | |
114 | the font the user specified for Emacs. | |
115 | ||
116 | Currently all unibyte text, i.e. all buffers with | |
117 | enable_multibyte_characters nil are displayed with fonts of the | |
118 | same registry and encoding `x-unibyte-registry-and-encoding'. This | |
119 | is consistent with the fact that languages can also be set | |
120 | globally, only. | |
121 | ||
122 | ||
123 | Font selection. | |
124 | ||
125 | Font selection tries to find the best available matching font for a | |
126 | given (charset, face) combination. This is done slightly | |
127 | differently for faces specifying a fontset, or a font family name. | |
128 | ||
129 | If the face specifies a fontset alias name, that fontset determines | |
130 | a pattern for fonts of the given charset. If the face specifies a | |
131 | font family, a font pattern is constructed. Charset symbols have a | |
132 | property `x-charset-registry' for that purpose that maps a charset | |
133 | to an XLFD registry and encoding in the font pattern constructed. | |
134 | ||
135 | Available fonts on the system on which Emacs runs are then matched | |
136 | against the font pattern. The result of font selection is the best | |
137 | match for the given face attributes in this font list. | |
138 | ||
139 | Font selection can be influenced by the user. | |
140 | ||
141 | 1. The user can specify the relative importance he gives the face | |
142 | attributes width, height, weight, and slant by setting | |
143 | face-font-selection-order (faces.el) to a list of face attribute | |
144 | names. The default is '(:width :height :weight :slant), and means | |
145 | that font selection first tries to find a good match for the font | |
146 | width specified by a face, then---within fonts with that | |
147 | width---tries to find a best match for the specified font height, | |
148 | etc. | |
149 | ||
150 | 2. Setting face-alternative-font-family-alist allows the user to | |
151 | specify alternative font families to try if a family specified by a | |
152 | face doesn't exist. | |
153 | ||
154 | ||
155 | Composite characters. | |
156 | ||
157 | Realized faces for composite characters are the only ones having a | |
158 | fontset id >= 0. When a composite character is encoded into a | |
159 | sequence of non-composite characters (in xterm.c), a suitable font | |
160 | for the non-composite characters is then selected and realized, | |
161 | i.e. the realization process is delayed but in principle the same. | |
162 | ||
163 | ||
164 | Initialization of basic faces. | |
165 | ||
166 | The faces `default', `modeline' are considered `basic faces'. | |
167 | When redisplay happens the first time for a newly created frame, | |
168 | basic faces are realized for CHARSET_ASCII. Frame parameters are | |
169 | used to fill in unspecified attributes of the default face. */ | |
170 | ||
171 | /* Define SCALABLE_FONTS to a non-zero value to enable scalable | |
172 | font use. Define it to zero to disable scalable font use. | |
173 | ||
174 | Use of too many or too large scalable fonts can crash XFree86 | |
175 | servers. That's why I've put the code dealing with scalable fonts | |
176 | in #if's. */ | |
177 | ||
178 | #define SCALABLE_FONTS 1 | |
7b7739b1 | 179 | |
c115973b JB |
180 | #include <sys/types.h> |
181 | #include <sys/stat.h> | |
18160b98 | 182 | #include <config.h> |
c115973b | 183 | #include "lisp.h" |
a8517066 | 184 | #include "charset.h" |
b5c53576 RS |
185 | #include "frame.h" |
186 | ||
87485d6f | 187 | #ifdef HAVE_X_WINDOWS |
c115973b | 188 | #include "xterm.h" |
a8517066 | 189 | #include "fontset.h" |
87485d6f | 190 | #endif |
82641697 | 191 | |
87485d6f MW |
192 | #ifdef MSDOS |
193 | #include "dosfns.h" | |
194 | #endif | |
82641697 | 195 | |
c115973b | 196 | #include "buffer.h" |
f211082d | 197 | #include "dispextern.h" |
357f32fc | 198 | #include "blockinput.h" |
b6d40e46 | 199 | #include "window.h" |
bde7c500 | 200 | #include "intervals.h" |
c115973b | 201 | |
87485d6f | 202 | #ifdef HAVE_X_WINDOWS |
82641697 GM |
203 | |
204 | /* Compensate for a bug in Xos.h on some systems, on which it requires | |
657070ac JB |
205 | time.h. On some such systems, Xos.h tries to redefine struct |
206 | timeval and struct timezone if USG is #defined while it is | |
207 | #included. */ | |
657070ac | 208 | |
82641697 | 209 | #ifdef XOS_NEEDS_TIME_H |
e11d186d | 210 | #include <time.h> |
657070ac JB |
211 | #undef USG |
212 | #include <X11/Xos.h> | |
213 | #define USG | |
e11d186d | 214 | #define __TIMEVAL__ |
82641697 GM |
215 | #else /* not XOS_NEEDS_TIME_H */ |
216 | #include <X11/Xos.h> | |
217 | #endif /* not XOS_NEEDS_TIME_H */ | |
e11d186d | 218 | |
82641697 | 219 | #endif /* HAVE_X_WINDOWS */ |
7a4d2269 | 220 | |
82641697 GM |
221 | #include <stdio.h> |
222 | #include <stdlib.h> | |
223 | #include <ctype.h> | |
224 | #include "keyboard.h" | |
c115973b | 225 | |
82641697 GM |
226 | #ifndef max |
227 | #define max(A, B) ((A) > (B) ? (A) : (B)) | |
228 | #define min(A, B) ((A) < (B) ? (A) : (B)) | |
229 | #define abs(X) ((X) < 0 ? -(X) : (X)) | |
657070ac | 230 | #endif |
cb637678 | 231 | |
82641697 GM |
232 | /* Non-zero if face attribute ATTR is unspecified. */ |
233 | ||
234 | #define UNSPECIFIEDP(ATTR) EQ ((ATTR), Qunspecified) | |
235 | ||
236 | /* Value is the number of elements of VECTOR. */ | |
237 | ||
238 | #define DIM(VECTOR) (sizeof (VECTOR) / sizeof *(VECTOR)) | |
239 | ||
240 | /* Make a copy of string S on the stack using alloca. Value is a pointer | |
241 | to the copy. */ | |
242 | ||
243 | #define STRDUPA(S) strcpy ((char *) alloca (strlen ((S)) + 1), (S)) | |
bc0db68d | 244 | |
82641697 GM |
245 | /* Make a copy of the contents of Lisp string S on the stack using |
246 | alloca. Value is a pointer to the copy. */ | |
247 | ||
248 | #define LSTRDUPA(S) STRDUPA (XSTRING ((S))->data) | |
249 | ||
250 | /* Size of hash table of realized faces in face caches (should be a | |
251 | prime number). */ | |
252 | ||
253 | #define FACE_CACHE_BUCKETS_SIZE 1001 | |
254 | ||
255 | /* Keyword symbols used for face attribute names. */ | |
256 | ||
257 | Lisp_Object QCfamily, QCheight, QCweight, QCslant, QCunderline; | |
258 | Lisp_Object QCinverse_video, QCforeground, QCbackground, QCstipple; | |
259 | Lisp_Object QCwidth, QCfont, QCbold, QCitalic; | |
260 | Lisp_Object QCreverse_video; | |
261 | Lisp_Object QCoverline, QCstrike_through, QCbox; | |
262 | ||
263 | /* Symbols used for attribute values. */ | |
264 | ||
265 | Lisp_Object Qnormal, Qbold, Qultra_light, Qextra_light, Qlight; | |
266 | Lisp_Object Qsemi_light, Qsemi_bold, Qextra_bold, Qultra_bold; | |
267 | Lisp_Object Qoblique, Qitalic, Qreverse_oblique, Qreverse_italic; | |
268 | Lisp_Object Qultra_condensed, Qextra_condensed, Qcondensed; | |
269 | Lisp_Object Qsemi_condensed, Qsemi_expanded, Qexpanded, Qextra_expanded; | |
270 | Lisp_Object Qultra_expanded; | |
271 | Lisp_Object Qreleased_button, Qpressed_button; | |
272 | Lisp_Object QCstyle, QCcolor, QCline_width; | |
273 | Lisp_Object Qunspecified; | |
274 | ||
275 | /* The symbol `x-charset-registry'. This property of charsets defines | |
276 | the X registry and encoding that fonts should have that are used to | |
277 | display characters of that charset. */ | |
278 | ||
279 | Lisp_Object Qx_charset_registry; | |
280 | ||
281 | /* Names of basic faces. */ | |
282 | ||
283 | Lisp_Object Qdefault, Qmodeline, Qtoolbar, Qregion, Qbitmap_area; | |
284 | Lisp_Object Qtop_line; | |
285 | ||
286 | /* Default stipple pattern used on monochrome displays. This stipple | |
287 | pattern is used on monochrome displays instead of shades of gray | |
288 | for a face background color. See `set-face-stipple' for possible | |
289 | values for this variable. */ | |
290 | ||
291 | Lisp_Object Vface_default_stipple; | |
292 | ||
293 | /* Default registry and encoding to use for charsets whose charset | |
294 | symbols don't specify one. */ | |
295 | ||
296 | Lisp_Object Vface_default_registry; | |
297 | ||
298 | /* Alist of alternative font families. Each element is of the form | |
299 | (FAMILY FAMILY1 FAMILY2 ...). If fonts of FAMILY can't be loaded, | |
300 | try FAMILY1, then FAMILY2, ... */ | |
301 | ||
302 | Lisp_Object Vface_alternative_font_family_alist; | |
303 | ||
304 | /* Allowed scalable fonts. A value of nil means don't allow any | |
305 | scalable fonts. A value of t means allow the use of any scalable | |
306 | font. Otherwise, value must be a list of regular expressions. A | |
307 | font may be scaled if its name matches a regular expression in the | |
308 | list. */ | |
309 | ||
310 | #if SCALABLE_FONTS | |
311 | Lisp_Object Vscalable_fonts_allowed; | |
312 | #endif | |
313 | ||
314 | /* The symbols `foreground-color' and `background-color' which can be | |
315 | used as part of a `face' property. This is for compatibility with | |
316 | Emacs 20.2. */ | |
317 | ||
318 | Lisp_Object Qforeground_color, Qbackground_color; | |
319 | ||
320 | /* The symbols `face' and `mouse-face' used as text properties. */ | |
7b7739b1 | 321 | |
ff83dbb1 | 322 | Lisp_Object Qface; |
82641697 GM |
323 | extern Lisp_Object Qmouse_face; |
324 | ||
325 | /* Error symbol for wrong_type_argument in load_pixmap. */ | |
326 | ||
cd0bb842 | 327 | Lisp_Object Qpixmap_spec_p; |
f211082d | 328 | |
82641697 GM |
329 | /* Alist of global face definitions. Each element is of the form |
330 | (FACE . LFACE) where FACE is a symbol naming a face and LFACE | |
331 | is a Lisp vector of face attributes. These faces are used | |
332 | to initialize faces for new frames. */ | |
cb637678 | 333 | |
82641697 | 334 | Lisp_Object Vface_new_frame_defaults; |
18195655 | 335 | |
82641697 | 336 | /* The next ID to assign to Lisp faces. */ |
cb637678 | 337 | |
82641697 | 338 | static int next_lface_id; |
c115973b | 339 | |
82641697 | 340 | /* A vector mapping Lisp face Id's to face names. */ |
c115973b | 341 | |
82641697 GM |
342 | static Lisp_Object *lface_id_to_name; |
343 | static int lface_id_to_name_size; | |
c115973b | 344 | |
82641697 GM |
345 | /* An alist of elements (COLOR-NAME . INDEX) mapping color names |
346 | to color indices for tty frames. */ | |
347 | ||
348 | Lisp_Object Vface_tty_color_alist; | |
349 | ||
350 | /* Counter for calls to clear_face_cache. If this counter reaches | |
351 | CLEAR_FONT_TABLE_COUNT, and a frame has more than | |
352 | CLEAR_FONT_TABLE_NFONTS load, unused fonts are freed. */ | |
353 | ||
354 | static int clear_font_table_count; | |
355 | #define CLEAR_FONT_TABLE_COUNT 100 | |
356 | #define CLEAR_FONT_TABLE_NFONTS 10 | |
357 | ||
358 | /* Non-zero means face attributes have been changed since the last | |
359 | redisplay. Used in redisplay_internal. */ | |
360 | ||
361 | int face_change_count; | |
362 | ||
363 | /* The total number of colors currently allocated. */ | |
364 | ||
365 | #if GLYPH_DEBUG | |
366 | static int ncolors_allocated; | |
367 | static int npixmaps_allocated; | |
368 | static int ngcs; | |
369 | #endif | |
370 | ||
371 | ||
372 | \f | |
373 | /* Function prototypes. */ | |
374 | ||
375 | struct font_name; | |
376 | struct table_entry; | |
377 | ||
378 | static int may_use_scalable_font_p P_ ((struct font_name *, char *)); | |
379 | static void set_font_frame_param P_ ((Lisp_Object, Lisp_Object)); | |
380 | static int better_font_p P_ ((int *, struct font_name *, struct font_name *, | |
381 | int)); | |
382 | static int first_font_matching P_ ((struct frame *f, char *, | |
383 | struct font_name *)); | |
384 | static int x_face_list_fonts P_ ((struct frame *, char *, | |
385 | struct font_name *, int, int, int)); | |
386 | static int font_scalable_p P_ ((struct font_name *)); | |
387 | static Lisp_Object deduce_unibyte_registry P_ ((struct frame *, char *)); | |
388 | static int get_lface_attributes P_ ((struct frame *, Lisp_Object, Lisp_Object *, int)); | |
389 | static int load_pixmap P_ ((struct frame *, Lisp_Object, unsigned *, unsigned *)); | |
390 | static char *xstrdup P_ ((char *)); | |
391 | static unsigned char *xstrlwr P_ ((unsigned char *)); | |
392 | static void signal_error P_ ((char *, Lisp_Object)); | |
393 | static void display_message P_ ((struct frame *, char *, Lisp_Object, Lisp_Object)); | |
394 | static struct frame *frame_or_selected_frame P_ ((Lisp_Object, int)); | |
395 | static void load_face_font_or_fontset P_ ((struct frame *, struct face *, char *, int)); | |
82641697 GM |
396 | static void load_face_colors P_ ((struct frame *, struct face *, Lisp_Object *)); |
397 | static void free_face_colors P_ ((struct frame *, struct face *)); | |
398 | static int face_color_gray_p P_ ((struct frame *, char *)); | |
399 | static char *build_font_name P_ ((struct font_name *)); | |
400 | static void free_font_names P_ ((struct font_name *, int)); | |
401 | static int sorted_font_list P_ ((struct frame *, char *, | |
402 | int (*cmpfn) P_ ((const void *, const void *)), | |
403 | struct font_name **)); | |
404 | static int font_list P_ ((struct frame *, char *, char *, char *, struct font_name **)); | |
405 | static int try_font_list P_ ((struct frame *, Lisp_Object *, char *, char *, char *, | |
406 | struct font_name **)); | |
407 | static int cmp_font_names P_ ((const void *, const void *)); | |
408 | static struct face *realize_face P_ ((struct face_cache *, | |
409 | Lisp_Object *, int)); | |
410 | static struct face *realize_x_face P_ ((struct face_cache *, | |
411 | Lisp_Object *, int)); | |
412 | static struct face *realize_tty_face P_ ((struct face_cache *, | |
413 | Lisp_Object *, int)); | |
414 | static int realize_basic_faces P_ ((struct frame *)); | |
415 | static int realize_default_face P_ ((struct frame *)); | |
416 | static void realize_named_face P_ ((struct frame *, Lisp_Object, int)); | |
417 | static int lface_fully_specified_p P_ ((Lisp_Object *)); | |
418 | static int lface_equal_p P_ ((Lisp_Object *, Lisp_Object *)); | |
419 | static unsigned hash_string_case_insensitive P_ ((Lisp_Object)); | |
420 | static unsigned lface_hash P_ ((Lisp_Object *)); | |
421 | static int lface_same_font_attributes_p P_ ((Lisp_Object *, Lisp_Object *)); | |
422 | static struct face_cache *make_face_cache P_ ((struct frame *)); | |
423 | static void free_realized_face P_ ((struct frame *, struct face *)); | |
424 | static void clear_face_gcs P_ ((struct face_cache *)); | |
425 | static void free_face_cache P_ ((struct face_cache *)); | |
426 | static int face_numeric_weight P_ ((Lisp_Object)); | |
427 | static int face_numeric_slant P_ ((Lisp_Object)); | |
428 | static int face_numeric_swidth P_ ((Lisp_Object)); | |
429 | static int face_fontset P_ ((struct frame *, Lisp_Object *)); | |
430 | static char *choose_face_font P_ ((struct frame *, Lisp_Object *, int, | |
431 | Lisp_Object)); | |
432 | static char *choose_face_fontset_font P_ ((struct frame *, Lisp_Object *, | |
433 | int, int)); | |
434 | static void merge_face_vectors P_ ((Lisp_Object *from, Lisp_Object *)); | |
435 | static void merge_face_vector_with_property P_ ((struct frame *, Lisp_Object *, | |
436 | Lisp_Object)); | |
437 | static int set_lface_from_font_name P_ ((struct frame *, Lisp_Object, char *, | |
438 | int)); | |
439 | static Lisp_Object lface_from_face_name P_ ((struct frame *, Lisp_Object, int)); | |
440 | static struct face *make_realized_face P_ ((Lisp_Object *, int, Lisp_Object)); | |
441 | static void free_realized_faces P_ ((struct face_cache *)); | |
442 | static char *best_matching_font P_ ((struct frame *, Lisp_Object *, | |
443 | struct font_name *, int)); | |
444 | static void cache_face P_ ((struct face_cache *, struct face *, unsigned)); | |
445 | static void uncache_face P_ ((struct face_cache *, struct face *)); | |
446 | static int xlfd_numeric_slant P_ ((struct font_name *)); | |
447 | static int xlfd_numeric_weight P_ ((struct font_name *)); | |
448 | static int xlfd_numeric_swidth P_ ((struct font_name *)); | |
449 | static Lisp_Object xlfd_symbolic_slant P_ ((struct font_name *)); | |
450 | static Lisp_Object xlfd_symbolic_weight P_ ((struct font_name *)); | |
451 | static Lisp_Object xlfd_symbolic_swidth P_ ((struct font_name *)); | |
452 | static int xlfd_fixed_p P_ ((struct font_name *)); | |
453 | static int xlfd_numeric_value P_ ((struct table_entry *, int, struct font_name *, | |
454 | int, int)); | |
455 | static Lisp_Object xlfd_symbolic_value P_ ((struct table_entry *, int, | |
456 | struct font_name *, int, int)); | |
457 | static struct table_entry *xlfd_lookup_field_contents P_ ((struct table_entry *, int, | |
458 | struct font_name *, int)); | |
459 | ||
460 | #ifdef HAVE_X_WINDOWS | |
461 | ||
462 | static int split_font_name P_ ((struct frame *, struct font_name *, int)); | |
463 | static int xlfd_point_size P_ ((struct frame *, struct font_name *)); | |
464 | static void sort_fonts P_ ((struct frame *, struct font_name *, int, | |
465 | int (*cmpfn) P_ ((const void *, const void *)))); | |
466 | static GC x_create_gc P_ ((struct frame *, unsigned long, XGCValues *)); | |
467 | static void x_free_gc P_ ((struct frame *, GC)); | |
468 | static void clear_font_table P_ ((struct frame *)); | |
469 | ||
470 | #endif /* HAVE_X_WINDOWS */ | |
c115973b | 471 | |
cb637678 | 472 | \f |
82641697 GM |
473 | /*********************************************************************** |
474 | Utilities | |
475 | ***********************************************************************/ | |
c115973b | 476 | |
87485d6f | 477 | #ifdef HAVE_X_WINDOWS |
cb637678 | 478 | |
82641697 GM |
479 | /* Create and return a GC for use on frame F. GC values and mask |
480 | are given by XGCV and MASK. */ | |
481 | ||
482 | static INLINE GC | |
483 | x_create_gc (f, mask, xgcv) | |
cb637678 | 484 | struct frame *f; |
82641697 GM |
485 | unsigned long mask; |
486 | XGCValues *xgcv; | |
c115973b JB |
487 | { |
488 | GC gc; | |
82641697 GM |
489 | BLOCK_INPUT; |
490 | gc = XCreateGC (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), mask, xgcv); | |
491 | UNBLOCK_INPUT; | |
492 | IF_DEBUG (++ngcs); | |
493 | return gc; | |
494 | } | |
c115973b | 495 | |
42120bc7 | 496 | |
82641697 GM |
497 | /* Free GC which was used on frame F. */ |
498 | ||
499 | static INLINE void | |
500 | x_free_gc (f, gc) | |
501 | struct frame *f; | |
502 | GC gc; | |
503 | { | |
660ed669 | 504 | BLOCK_INPUT; |
82641697 GM |
505 | xassert (--ngcs >= 0); |
506 | XFreeGC (FRAME_X_DISPLAY (f), gc); | |
507 | UNBLOCK_INPUT; | |
508 | } | |
660ed669 | 509 | |
82641697 | 510 | #endif /* HAVE_X_WINDOWS */ |
660ed669 | 511 | |
660ed669 | 512 | |
82641697 GM |
513 | /* Like strdup, but uses xmalloc. */ |
514 | ||
515 | static char * | |
516 | xstrdup (s) | |
517 | char *s; | |
518 | { | |
519 | int len = strlen (s) + 1; | |
520 | char *p = (char *) xmalloc (len); | |
521 | bcopy (s, p, len); | |
522 | return p; | |
523 | } | |
660ed669 | 524 | |
660ed669 | 525 | |
82641697 GM |
526 | /* Like stricmp. Used to compare parts of font names which are in |
527 | ISO8859-1. */ | |
528 | ||
529 | int | |
530 | xstricmp (s1, s2) | |
531 | unsigned char *s1, *s2; | |
532 | { | |
533 | while (*s1 && *s2) | |
95887807 | 534 | { |
82641697 GM |
535 | unsigned char c1 = tolower (*s1); |
536 | unsigned char c2 = tolower (*s2); | |
537 | if (c1 != c2) | |
538 | return c1 < c2 ? -1 : 1; | |
539 | ++s1, ++s2; | |
95887807 | 540 | } |
cd0bb842 | 541 | |
82641697 GM |
542 | if (*s1 == 0) |
543 | return *s2 == 0 ? 0 : -1; | |
544 | return 1; | |
545 | } | |
660ed669 | 546 | |
660ed669 | 547 | |
82641697 | 548 | /* Like strlwr, which might not always be available. */ |
42120bc7 | 549 | |
82641697 GM |
550 | static unsigned char * |
551 | xstrlwr (s) | |
552 | unsigned char *s; | |
553 | { | |
554 | unsigned char *p = s; | |
555 | ||
556 | for (p = s; *p; ++p) | |
557 | *p = tolower (*p); | |
558 | ||
559 | return s; | |
c115973b | 560 | } |
cb637678 | 561 | |
42120bc7 | 562 | |
82641697 GM |
563 | /* Signal `error' with message S, and additional argument ARG. */ |
564 | ||
565 | static void | |
566 | signal_error (s, arg) | |
567 | char *s; | |
568 | Lisp_Object arg; | |
42120bc7 | 569 | { |
82641697 GM |
570 | Fsignal (Qerror, Fcons (build_string (s), Fcons (arg, Qnil))); |
571 | } | |
42120bc7 | 572 | |
82641697 GM |
573 | |
574 | /* Display a message with format string FORMAT and arguments ARG1 and | |
575 | ARG2 on frame F. Used to display errors if fonts, bitmaps, colors | |
576 | etc. for a realized face on frame F cannot be loaded. (If we would | |
577 | signal an error in these cases, we would end up in an infinite | |
578 | recursion because this would stop realization, and the redisplay | |
579 | triggered by the signal would try to realize that same face again.) | |
580 | ||
581 | If basic faces of F are not realized, just add the message to the | |
582 | messages buffer "*Messages*". Because Fmessage calls | |
583 | echo_area_display which tries to realize basic faces again, we would | |
584 | otherwise also end in an infinite recursion. */ | |
585 | ||
586 | static void | |
587 | display_message (f, format, arg1, arg2) | |
588 | struct frame *f; | |
589 | char *format; | |
590 | Lisp_Object arg1, arg2; | |
591 | { | |
592 | Lisp_Object args[3]; | |
593 | Lisp_Object nargs; | |
594 | extern int waiting_for_input; | |
595 | ||
596 | /* Function note_mouse_highlight calls face_at_buffer_position which | |
597 | may realize a face. If some attribute of that face is invalid, | |
598 | say an invalid color, don't display an error to avoid calling | |
599 | Lisp from XTread_socket. */ | |
600 | if (waiting_for_input) | |
601 | return; | |
602 | ||
603 | nargs = make_number (DIM (args)); | |
604 | args[0] = build_string (format); | |
605 | args[1] = arg1; | |
606 | args[2] = arg2; | |
607 | ||
608 | if (f->face_cache->used >= BASIC_FACE_ID_SENTINEL) | |
609 | Fmessage (nargs, args); | |
610 | else | |
42120bc7 | 611 | { |
82641697 GM |
612 | Lisp_Object msg = Fformat (nargs, args); |
613 | char *buffer = LSTRDUPA (msg); | |
614 | message_dolog (buffer, strlen (buffer), 1, 0); | |
615 | } | |
616 | } | |
42120bc7 | 617 | |
82641697 GM |
618 | |
619 | /* If FRAME is nil, return selected_frame. Otherwise, check that | |
620 | FRAME is a live frame, and return a pointer to it. NPARAM | |
621 | is the parameter number of FRAME, for CHECK_LIVE_FRAME. This is | |
622 | here because it's a frequent pattern in Lisp function definitions. */ | |
623 | ||
624 | static INLINE struct frame * | |
625 | frame_or_selected_frame (frame, nparam) | |
626 | Lisp_Object frame; | |
627 | int nparam; | |
628 | { | |
629 | struct frame *f; | |
630 | ||
631 | if (NILP (frame)) | |
632 | f = selected_frame; | |
633 | else | |
634 | { | |
635 | CHECK_LIVE_FRAME (frame, nparam); | |
636 | f = XFRAME (frame); | |
42120bc7 RS |
637 | } |
638 | ||
82641697 | 639 | return f; |
42120bc7 | 640 | } |
82641697 | 641 | |
42120bc7 | 642 | \f |
82641697 GM |
643 | /*********************************************************************** |
644 | Frames and faces | |
645 | ***********************************************************************/ | |
cd0bb842 | 646 | |
82641697 | 647 | /* Initialize face cache and basic faces for frame F. */ |
cb637678 | 648 | |
82641697 GM |
649 | void |
650 | init_frame_faces (f) | |
cb637678 | 651 | struct frame *f; |
cb637678 | 652 | { |
82641697 GM |
653 | /* Make a face cache, if F doesn't have one. */ |
654 | if (FRAME_FACE_CACHE (f) == NULL) | |
655 | FRAME_FACE_CACHE (f) = make_face_cache (f); | |
656 | ||
657 | #ifdef HAVE_X_WINDOWS | |
658 | /* Make the image cache. */ | |
659 | if (FRAME_X_P (f)) | |
660 | { | |
661 | if (FRAME_X_IMAGE_CACHE (f) == NULL) | |
662 | FRAME_X_IMAGE_CACHE (f) = make_image_cache (); | |
663 | ++FRAME_X_IMAGE_CACHE (f)->refcount; | |
664 | } | |
665 | #endif /* HAVE_X_WINDOWS */ | |
cb637678 | 666 | |
82641697 GM |
667 | /* Realize basic faces. Must have enough information in frame |
668 | parameters to realize basic faces at this point. */ | |
669 | #ifdef HAVE_X_WINDOWS | |
670 | if (!FRAME_X_P (f) || FRAME_X_WINDOW (f)) | |
671 | #endif | |
672 | if (!realize_basic_faces (f)) | |
673 | abort (); | |
674 | } | |
cb637678 | 675 | |
cb637678 | 676 | |
82641697 | 677 | /* Free face cache of frame F. Called from Fdelete_frame. */ |
cb637678 | 678 | |
82641697 GM |
679 | void |
680 | free_frame_faces (f) | |
cb637678 | 681 | struct frame *f; |
cb637678 | 682 | { |
82641697 GM |
683 | struct face_cache *face_cache = FRAME_FACE_CACHE (f); |
684 | ||
685 | if (face_cache) | |
686 | { | |
687 | free_face_cache (face_cache); | |
688 | FRAME_FACE_CACHE (f) = NULL; | |
689 | } | |
660ed669 | 690 | |
82641697 GM |
691 | #ifdef HAVE_X_WINDOWS |
692 | if (FRAME_X_P (f)) | |
195f798e | 693 | { |
82641697 GM |
694 | struct image_cache *image_cache = FRAME_X_IMAGE_CACHE (f); |
695 | if (image_cache) | |
195f798e | 696 | { |
82641697 GM |
697 | --image_cache->refcount; |
698 | if (image_cache->refcount == 0) | |
699 | free_image_cache (f); | |
195f798e RS |
700 | } |
701 | } | |
82641697 | 702 | #endif /* HAVE_X_WINDOWS */ |
cb637678 JB |
703 | } |
704 | ||
82641697 GM |
705 | |
706 | /* Recompute basic faces for frame F. Call this after changing frame | |
707 | parameters on which those faces depend, or when realized faces have | |
708 | been freed due to changing attributes of named faces. */ | |
709 | ||
710 | void | |
711 | recompute_basic_faces (f) | |
cb637678 | 712 | struct frame *f; |
cb637678 | 713 | { |
82641697 GM |
714 | if (FRAME_FACE_CACHE (f)) |
715 | { | |
716 | int realized_p = realize_basic_faces (f); | |
717 | xassert (realized_p); | |
718 | } | |
719 | } | |
cb637678 | 720 | |
cb637678 | 721 | |
82641697 GM |
722 | /* Clear the face caches of all frames. CLEAR_FONTS_P non-zero means |
723 | try to free unused fonts, too. */ | |
cb637678 | 724 | |
adfea139 | 725 | void |
82641697 GM |
726 | clear_face_cache (clear_fonts_p) |
727 | int clear_fonts_p; | |
cb637678 | 728 | { |
82641697 GM |
729 | #ifdef HAVE_X_WINDOWS |
730 | Lisp_Object tail, frame; | |
731 | struct frame *f; | |
828e66d1 | 732 | |
82641697 GM |
733 | if (clear_fonts_p |
734 | || ++clear_font_table_count == CLEAR_FONT_TABLE_COUNT) | |
828e66d1 | 735 | { |
82641697 GM |
736 | /* From time to time see if we can unload some fonts. This also |
737 | frees all realized faces on all frames. Fonts needed by | |
738 | faces will be loaded again when faces are realized again. */ | |
739 | clear_font_table_count = 0; | |
195f798e | 740 | |
82641697 | 741 | FOR_EACH_FRAME (tail, frame) |
195f798e | 742 | { |
82641697 GM |
743 | f = XFRAME (frame); |
744 | if (FRAME_X_P (f) | |
745 | && FRAME_X_DISPLAY_INFO (f)->n_fonts > CLEAR_FONT_TABLE_NFONTS) | |
195f798e | 746 | { |
82641697 GM |
747 | free_all_realized_faces (frame); |
748 | clear_font_table (f); | |
749 | } | |
750 | } | |
751 | } | |
752 | else | |
753 | { | |
754 | /* Clear GCs of realized faces. */ | |
755 | FOR_EACH_FRAME (tail, frame) | |
756 | { | |
757 | f = XFRAME (frame); | |
758 | if (FRAME_X_P (f)) | |
759 | { | |
760 | clear_face_gcs (FRAME_FACE_CACHE (f)); | |
761 | clear_image_cache (f, 0); | |
195f798e RS |
762 | } |
763 | } | |
828e66d1 | 764 | } |
82641697 | 765 | #endif /* HAVE_X_WINDOWS */ |
cd0bb842 RS |
766 | } |
767 | ||
82641697 GM |
768 | |
769 | DEFUN ("clear-face-cache", Fclear_face_cache, Sclear_face_cache, 0, 1, 0, | |
770 | "Clear face caches on all frames.\n\ | |
771 | Optional THOROUGHLY non-nil means try to free unused fonts, too.") | |
772 | (thorougly) | |
773 | Lisp_Object thorougly; | |
cd0bb842 | 774 | { |
82641697 GM |
775 | clear_face_cache (!NILP (thorougly)); |
776 | return Qnil; | |
777 | } | |
778 | ||
779 | ||
780 | ||
781 | #ifdef HAVE_X_WINDOWS | |
782 | ||
783 | ||
784 | /* Remove those fonts from the font table of frame F that are not used | |
785 | by fontsets. Called from clear_face_cache from time to time. */ | |
786 | ||
787 | static void | |
788 | clear_font_table (f) | |
789 | struct frame *f; | |
790 | { | |
791 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
792 | char *used; | |
793 | Lisp_Object rest, frame; | |
794 | int i; | |
795 | ||
796 | xassert (FRAME_X_P (f)); | |
797 | ||
798 | used = (char *) alloca (dpyinfo->n_fonts * sizeof *used); | |
799 | bzero (used, dpyinfo->n_fonts * sizeof *used); | |
800 | ||
801 | /* For all frames with the same x_display_info as F, record | |
802 | in `used' those fonts that are in use by fontsets. */ | |
803 | FOR_EACH_FRAME (rest, frame) | |
804 | if (FRAME_X_DISPLAY_INFO (XFRAME (frame)) == dpyinfo) | |
805 | { | |
806 | struct frame *f = XFRAME (frame); | |
807 | struct fontset_data *fontset_data = FRAME_FONTSET_DATA (f); | |
808 | ||
809 | for (i = 0; i < fontset_data->n_fontsets; ++i) | |
810 | { | |
811 | struct fontset_info *info = fontset_data->fontset_table[i]; | |
812 | int j; | |
813 | ||
814 | for (j = 0; j <= MAX_CHARSET; ++j) | |
815 | { | |
816 | int idx = info->font_indexes[j]; | |
817 | if (idx >= 0) | |
818 | used[idx] = 1; | |
819 | } | |
820 | } | |
821 | } | |
822 | ||
823 | /* Free those fonts that are not used by fontsets. */ | |
824 | for (i = 0; i < dpyinfo->n_fonts; ++i) | |
825 | if (used[i] == 0 && dpyinfo->font_table[i].name) | |
826 | { | |
827 | struct font_info *font_info = dpyinfo->font_table + i; | |
828 | ||
829 | /* Free names. In xfns.c there is a comment that full_name | |
830 | should never be freed because it is always shared with | |
831 | something else. I don't think this is true anymore---see | |
832 | x_load_font. It's either equal to font_info->name or | |
833 | allocated via xmalloc, and there seems to be no place in | |
834 | the source files where full_name is transferred to another | |
835 | data structure. */ | |
836 | if (font_info->full_name != font_info->name) | |
837 | xfree (font_info->full_name); | |
838 | xfree (font_info->name); | |
839 | ||
840 | /* Free the font. */ | |
841 | BLOCK_INPUT; | |
842 | XFreeFont (dpyinfo->display, font_info->font); | |
843 | UNBLOCK_INPUT; | |
844 | ||
845 | /* Mark font table slot free. */ | |
846 | font_info->font = NULL; | |
847 | font_info->name = font_info->full_name = NULL; | |
848 | } | |
849 | } | |
850 | ||
851 | ||
852 | #endif /* HAVE_X_WINDOWS */ | |
853 | ||
854 | ||
855 | \f | |
856 | /*********************************************************************** | |
857 | X Pixmaps | |
858 | ***********************************************************************/ | |
859 | ||
860 | #ifdef HAVE_X_WINDOWS | |
861 | ||
862 | DEFUN ("pixmap-spec-p", Fpixmap_spec_p, Spixmap_spec_p, 1, 1, 0, | |
863 | "Non-nil if OBJECT is a valid pixmap specification.\n\ | |
864 | A pixmap specification is either a string, or a list (WIDTH HEIGHT DATA)\n\ | |
865 | where WIDTH is the pixel width of the pixmap, HEIGHT is its height,\n\ | |
866 | and DATA contains the bits of the pixmap.") | |
867 | (object) | |
868 | Lisp_Object object; | |
869 | { | |
870 | Lisp_Object height, width; | |
cd0bb842 | 871 | |
ed791d5b EN |
872 | return ((STRINGP (object) |
873 | || (CONSP (object) | |
874 | && CONSP (XCONS (object)->cdr) | |
875 | && CONSP (XCONS (XCONS (object)->cdr)->cdr) | |
876 | && NILP (XCONS (XCONS (XCONS (object)->cdr)->cdr)->cdr) | |
877 | && (width = XCONS (object)->car, INTEGERP (width)) | |
82641697 GM |
878 | && (height = XCONS (XCONS (object)->cdr)->car, |
879 | INTEGERP (height)) | |
ed791d5b | 880 | && STRINGP (XCONS (XCONS (XCONS (object)->cdr)->cdr)->car) |
cd0bb842 RS |
881 | && XINT (width) > 0 |
882 | && XINT (height) > 0 | |
883 | /* The string must have enough bits for width * height. */ | |
ed791d5b | 884 | && ((XSTRING (XCONS (XCONS (XCONS (object)->cdr)->cdr)->car)->size |
68be917d | 885 | * (BITS_PER_INT / sizeof (int))) |
e1befa75 | 886 | >= XFASTINT (width) * XFASTINT (height)))) |
cd0bb842 RS |
887 | ? Qt : Qnil); |
888 | } | |
889 | ||
cd0bb842 | 890 | |
82641697 GM |
891 | /* Load a bitmap according to NAME (which is either a file name or a |
892 | pixmap spec) for use on frame F. Value is the bitmap_id (see | |
893 | xfns.c). If NAME is nil, return with a bitmap id of zero. If | |
894 | bitmap cannot be loaded, display a message saying so, and return | |
895 | zero. Store the bitmap width in *W_PTR and its height in *H_PTR, | |
896 | if these pointers are not null. */ | |
cd0bb842 | 897 | |
82641697 | 898 | static int |
cd0bb842 | 899 | load_pixmap (f, name, w_ptr, h_ptr) |
7812a96f | 900 | FRAME_PTR f; |
cd0bb842 RS |
901 | Lisp_Object name; |
902 | unsigned int *w_ptr, *h_ptr; | |
903 | { | |
904 | int bitmap_id; | |
905 | Lisp_Object tem; | |
906 | ||
907 | if (NILP (name)) | |
82641697 | 908 | return 0; |
cd0bb842 RS |
909 | |
910 | tem = Fpixmap_spec_p (name); | |
911 | if (NILP (tem)) | |
912 | wrong_type_argument (Qpixmap_spec_p, name); | |
913 | ||
914 | BLOCK_INPUT; | |
cd0bb842 RS |
915 | if (CONSP (name)) |
916 | { | |
917 | /* Decode a bitmap spec into a bitmap. */ | |
918 | ||
919 | int h, w; | |
920 | Lisp_Object bits; | |
921 | ||
922 | w = XINT (Fcar (name)); | |
923 | h = XINT (Fcar (Fcdr (name))); | |
924 | bits = Fcar (Fcdr (Fcdr (name))); | |
925 | ||
926 | bitmap_id = x_create_bitmap_from_data (f, XSTRING (bits)->data, | |
927 | w, h); | |
928 | } | |
929 | else | |
930 | { | |
931 | /* It must be a string -- a file name. */ | |
932 | bitmap_id = x_create_bitmap_from_file (f, name); | |
933 | } | |
934 | UNBLOCK_INPUT; | |
935 | ||
7812a96f | 936 | if (bitmap_id < 0) |
82641697 GM |
937 | { |
938 | display_message (f, "Invalid or undefined bitmap %s", name, Qnil); | |
939 | bitmap_id = 0; | |
cd0bb842 | 940 | |
82641697 GM |
941 | if (w_ptr) |
942 | *w_ptr = 0; | |
943 | if (h_ptr) | |
944 | *h_ptr = 0; | |
945 | } | |
946 | else | |
947 | { | |
948 | #if GLYPH_DEBUG | |
949 | ++npixmaps_allocated; | |
950 | #endif | |
951 | if (w_ptr) | |
952 | *w_ptr = x_bitmap_width (f, bitmap_id); | |
953 | ||
954 | if (h_ptr) | |
955 | *h_ptr = x_bitmap_height (f, bitmap_id); | |
956 | } | |
cd0bb842 RS |
957 | |
958 | return bitmap_id; | |
cb637678 | 959 | } |
87485d6f | 960 | |
82641697 GM |
961 | #endif /* HAVE_X_WINDOWS */ |
962 | ||
87485d6f | 963 | |
82641697 GM |
964 | \f |
965 | /*********************************************************************** | |
966 | Minimum font bounds | |
967 | ***********************************************************************/ | |
968 | ||
969 | #ifdef HAVE_X_WINDOWS | |
970 | ||
d6fc0a22 GM |
971 | /* Update the line_height of frame F. Return non-zero if line height |
972 | changes. */ | |
87485d6f | 973 | |
82641697 GM |
974 | int |
975 | frame_update_line_height (f) | |
87485d6f | 976 | struct frame *f; |
87485d6f | 977 | { |
d6fc0a22 GM |
978 | int fontset, line_height, changed_p; |
979 | ||
980 | fontset = f->output_data.x->fontset; | |
981 | if (fontset > 0) | |
982 | line_height = FRAME_FONTSET_DATA (f)->fontset_table[fontset]->height; | |
983 | else | |
984 | line_height = FONT_HEIGHT (f->output_data.x->font); | |
985 | ||
986 | changed_p = line_height != f->output_data.x->line_height; | |
987 | f->output_data.x->line_height = line_height; | |
82641697 | 988 | return changed_p; |
87485d6f MW |
989 | } |
990 | ||
82641697 GM |
991 | #endif /* HAVE_X_WINDOWS */ |
992 | ||
993 | \f | |
994 | /*********************************************************************** | |
995 | Fonts | |
996 | ***********************************************************************/ | |
997 | ||
998 | #ifdef HAVE_X_WINDOWS | |
999 | ||
1000 | /* Load font or fontset of face FACE which is used on frame F. | |
1001 | FONTSET is the fontset FACE should use or -1, if FACE doesn't use a | |
1002 | fontset. FONT_NAME is the name of the font to load, if no fontset | |
1003 | is used. It is null if no suitable font name could be determined | |
1004 | for the face. */ | |
1005 | ||
1006 | static void | |
1007 | load_face_font_or_fontset (f, face, font_name, fontset) | |
1008 | struct frame *f; | |
1009 | struct face *face; | |
1010 | char *font_name; | |
1011 | int fontset; | |
87485d6f | 1012 | { |
82641697 GM |
1013 | struct font_info *font_info = NULL; |
1014 | ||
1015 | face->font_info_id = -1; | |
1016 | face->fontset = fontset; | |
1017 | face->font = NULL; | |
1018 | ||
1019 | BLOCK_INPUT; | |
1020 | if (fontset >= 0) | |
1021 | font_info = FS_LOAD_FONT (f, FRAME_X_FONT_TABLE (f), CHARSET_ASCII, | |
1022 | NULL, fontset); | |
1023 | else if (font_name) | |
1024 | font_info = FS_LOAD_FONT (f, FRAME_X_FONT_TABLE (f), face->charset, | |
1025 | font_name, -1); | |
1026 | UNBLOCK_INPUT; | |
1027 | ||
1028 | if (font_info) | |
1029 | { | |
1030 | char *s; | |
1031 | int i; | |
1032 | ||
1033 | face->font_info_id = FONT_INFO_ID (f, font_info); | |
1034 | face->font = font_info->font; | |
1035 | face->font_name = font_info->full_name; | |
1036 | ||
1037 | /* Make the registry part of the font name readily accessible. | |
1038 | The registry is used to find suitable faces for unibyte text. */ | |
1039 | s = font_info->full_name + strlen (font_info->full_name); | |
1040 | i = 0; | |
1041 | while (i < 2 && --s >= font_info->full_name) | |
1042 | if (*s == '-') | |
1043 | ++i; | |
1044 | ||
1045 | if (!STRINGP (face->registry) | |
1046 | || xstricmp (XSTRING (face->registry)->data, s + 1) != 0) | |
1047 | { | |
1048 | if (STRINGP (Vface_default_registry) | |
1049 | && !xstricmp (XSTRING (Vface_default_registry)->data, s + 1)) | |
1050 | face->registry = Vface_default_registry; | |
1051 | else | |
1052 | face->registry = build_string (s + 1); | |
1053 | } | |
1054 | } | |
1055 | else if (fontset >= 0) | |
1056 | display_message (f, "Unable to load ASCII font of fontset %d", | |
1057 | make_number (fontset), Qnil); | |
1058 | else if (font_name) | |
1059 | display_message (f, "Unable to load font %s", | |
1060 | build_string (font_name), Qnil); | |
87485d6f MW |
1061 | } |
1062 | ||
82641697 | 1063 | #endif /* HAVE_X_WINDOWS */ |
87485d6f | 1064 | |
87485d6f | 1065 | |
82641697 GM |
1066 | \f |
1067 | /*********************************************************************** | |
1068 | X Colors | |
1069 | ***********************************************************************/ | |
1070 | ||
1071 | #ifdef HAVE_X_WINDOWS | |
1072 | ||
1073 | /* Return non-zero if COLOR_NAME is a shade of gray (or white or | |
1074 | black) on frame F. The algorithm is taken from 20.2 faces.el. */ | |
1075 | ||
1076 | static int | |
1077 | face_color_gray_p (f, color_name) | |
1078 | struct frame *f; | |
1079 | char *color_name; | |
1080 | { | |
1081 | XColor color; | |
1082 | int gray_p; | |
1083 | ||
1084 | if (defined_color (f, color_name, &color, 0)) | |
1085 | gray_p = ((abs (color.red - color.green) | |
1086 | < max (color.red, color.green) / 20) | |
1087 | && (abs (color.green - color.blue) | |
1088 | < max (color.green, color.blue) / 20) | |
1089 | && (abs (color.blue - color.red) | |
1090 | < max (color.blue, color.red) / 20)); | |
87485d6f | 1091 | else |
82641697 GM |
1092 | gray_p = 0; |
1093 | ||
1094 | return gray_p; | |
87485d6f | 1095 | } |
87485d6f | 1096 | |
cb637678 | 1097 | |
82641697 GM |
1098 | /* Return non-zero if color COLOR_NAME can be displayed on frame F. |
1099 | BACKGROUND_P non-zero means the color will be used as background | |
1100 | color. */ | |
1101 | ||
1102 | static int | |
1103 | face_color_supported_p (f, color_name, background_p) | |
1104 | struct frame *f; | |
1105 | char *color_name; | |
1106 | int background_p; | |
1107 | { | |
1108 | Lisp_Object frame; | |
1109 | ||
1110 | XSETFRAME (frame, f); | |
1111 | return (!NILP (Vwindow_system) | |
1112 | && (!NILP (Fx_display_color_p (frame)) | |
1113 | || xstricmp (color_name, "black") == 0 | |
1114 | || xstricmp (color_name, "white") == 0 | |
1115 | || (background_p | |
1116 | && face_color_gray_p (f, color_name)) | |
1117 | || (!NILP (Fx_display_grayscale_p (frame)) | |
1118 | && face_color_gray_p (f, color_name)))); | |
1119 | } | |
1120 | ||
1121 | ||
1122 | DEFUN ("face-color-gray-p", Fface_color_gray_p, Sface_color_gray_p, 1, 2, 0, | |
1123 | "Return non-nil if COLOR is a shade of gray (or white or black).\n\ | |
1124 | FRAME specifies the frame and thus the display for interpreting COLOR.\n\ | |
1125 | If FRAME is nil or omitted, use the selected frame.") | |
1126 | (color, frame) | |
1127 | Lisp_Object color, frame; | |
cb637678 | 1128 | { |
82641697 GM |
1129 | struct frame *f = check_x_frame (frame); |
1130 | CHECK_STRING (color, 0); | |
1131 | return face_color_gray_p (f, XSTRING (color)->data) ? Qt : Qnil; | |
1132 | } | |
660ed669 | 1133 | |
fffc2367 | 1134 | |
82641697 GM |
1135 | DEFUN ("face-color-supported-p", Fface_color_supported_p, |
1136 | Sface_color_supported_p, 2, 3, 0, | |
1137 | "Return non-nil if COLOR can be displayed on FRAME.\n\ | |
1138 | BACKGROUND-P non-nil means COLOR is used as a background.\n\ | |
1139 | If FRAME is nil or omitted, use the selected frame.\n\ | |
1140 | COLOR must be a valid color name.") | |
1141 | (frame, color, background_p) | |
1142 | Lisp_Object frame, color, background_p; | |
1143 | { | |
1144 | struct frame *f = check_x_frame (frame); | |
1145 | CHECK_STRING (color, 0); | |
1146 | if (face_color_supported_p (f, XSTRING (color)->data, !NILP (background_p))) | |
1147 | return Qt; | |
1148 | return Qnil; | |
1149 | } | |
7b37f67b | 1150 | |
82641697 GM |
1151 | /* Load color with name NAME for use by face FACE on frame F. |
1152 | TARGET_INDEX must be one of LFACE_FOREGROUND_INDEX, | |
1153 | LFACE_BACKGROUND_INDEX, LFACE_UNDERLINE_INDEX, LFACE_OVERLINE_INDEX, | |
1154 | LFACE_STRIKE_THROUGH_INDEX, or LFACE_BOX_INDEX. Value is the | |
1155 | pixel color. If color cannot be loaded, display a message, and | |
1156 | return the foreground, background or underline color of F, but | |
1157 | record that fact in flags of the face so that we don't try to free | |
1158 | these colors. */ | |
1159 | ||
44747bd0 | 1160 | unsigned long |
82641697 GM |
1161 | load_color (f, face, name, target_index) |
1162 | struct frame *f; | |
1163 | struct face *face; | |
1164 | Lisp_Object name; | |
1165 | enum lface_attribute_index target_index; | |
1166 | { | |
1167 | XColor color; | |
1168 | ||
1169 | xassert (STRINGP (name)); | |
1170 | xassert (target_index == LFACE_FOREGROUND_INDEX | |
1171 | || target_index == LFACE_BACKGROUND_INDEX | |
1172 | || target_index == LFACE_UNDERLINE_INDEX | |
1173 | || target_index == LFACE_OVERLINE_INDEX | |
1174 | || target_index == LFACE_STRIKE_THROUGH_INDEX | |
1175 | || target_index == LFACE_BOX_INDEX); | |
1176 | ||
1177 | /* if the color map is full, defined_color will return a best match | |
1178 | to the values in an existing cell. */ | |
1179 | if (!defined_color (f, XSTRING (name)->data, &color, 1)) | |
1180 | { | |
1181 | display_message (f, "Unable to load color %s", name, Qnil); | |
1182 | ||
1183 | switch (target_index) | |
1120eb5e | 1184 | { |
82641697 GM |
1185 | case LFACE_FOREGROUND_INDEX: |
1186 | face->foreground_defaulted_p = 1; | |
1187 | color.pixel = FRAME_FOREGROUND_PIXEL (f); | |
1188 | break; | |
1189 | ||
1190 | case LFACE_BACKGROUND_INDEX: | |
1191 | face->background_defaulted_p = 1; | |
1192 | color.pixel = FRAME_BACKGROUND_PIXEL (f); | |
1193 | break; | |
1194 | ||
1195 | case LFACE_UNDERLINE_INDEX: | |
1196 | face->underline_defaulted_p = 1; | |
1197 | color.pixel = FRAME_FOREGROUND_PIXEL (f); | |
1198 | break; | |
1199 | ||
1200 | case LFACE_OVERLINE_INDEX: | |
1201 | face->overline_color_defaulted_p = 1; | |
1202 | color.pixel = FRAME_FOREGROUND_PIXEL (f); | |
1120eb5e | 1203 | break; |
82641697 GM |
1204 | |
1205 | case LFACE_STRIKE_THROUGH_INDEX: | |
1206 | face->strike_through_color_defaulted_p = 1; | |
1207 | color.pixel = FRAME_FOREGROUND_PIXEL (f); | |
1208 | break; | |
1209 | ||
1210 | case LFACE_BOX_INDEX: | |
1211 | face->box_color_defaulted_p = 1; | |
1212 | color.pixel = FRAME_FOREGROUND_PIXEL (f); | |
1213 | break; | |
1214 | ||
1215 | default: | |
1216 | abort (); | |
1120eb5e | 1217 | } |
82641697 GM |
1218 | } |
1219 | #if GLYPH_DEBUG | |
1220 | else | |
1221 | ++ncolors_allocated; | |
1222 | #endif | |
1223 | ||
1224 | return color.pixel; | |
1225 | } | |
1120eb5e | 1226 | |
1120eb5e | 1227 | |
82641697 GM |
1228 | /* Load colors for face FACE which is used on frame F. Colors are |
1229 | specified by slots LFACE_BACKGROUND_INDEX and LFACE_FOREGROUND_INDEX | |
1230 | of ATTRS. If the background color specified is not supported on F, | |
1231 | try to emulate gray colors with a stipple from Vface_default_stipple. */ | |
1232 | ||
1233 | static void | |
1234 | load_face_colors (f, face, attrs) | |
1235 | struct frame *f; | |
1236 | struct face *face; | |
1237 | Lisp_Object *attrs; | |
1238 | { | |
1239 | Lisp_Object fg, bg; | |
1240 | ||
1241 | bg = attrs[LFACE_BACKGROUND_INDEX]; | |
1242 | fg = attrs[LFACE_FOREGROUND_INDEX]; | |
1243 | ||
1244 | /* Swap colors if face is inverse-video. */ | |
1245 | if (EQ (attrs[LFACE_INVERSE_INDEX], Qt)) | |
1246 | { | |
1247 | Lisp_Object tmp; | |
1248 | tmp = fg; | |
1249 | fg = bg; | |
1250 | bg = tmp; | |
1251 | } | |
1252 | ||
1253 | /* Check for support for foreground, not for background because | |
1254 | face_color_supported_p is smart enough to know that grays are | |
1255 | "supported" as background because we are supposed to use stipple | |
1256 | for them. */ | |
1257 | if (!face_color_supported_p (f, XSTRING (bg)->data, 0) | |
1258 | && !NILP (Fpixmap_spec_p (Vface_default_stipple))) | |
1259 | { | |
1260 | x_destroy_bitmap (f, face->stipple); | |
1261 | face->stipple = load_pixmap (f, Vface_default_stipple, | |
1262 | &face->pixmap_w, &face->pixmap_h); | |
1263 | } | |
82641697 | 1264 | |
be8a72f4 | 1265 | face->background = load_color (f, face, bg, LFACE_BACKGROUND_INDEX); |
82641697 | 1266 | face->foreground = load_color (f, face, fg, LFACE_FOREGROUND_INDEX); |
cb637678 JB |
1267 | } |
1268 | ||
660ed669 | 1269 | |
82641697 | 1270 | /* Free color PIXEL on frame F. */ |
cd0bb842 | 1271 | |
cb637678 | 1272 | void |
82641697 | 1273 | unload_color (f, pixel) |
cb637678 | 1274 | struct frame *f; |
82641697 | 1275 | unsigned long pixel; |
cb637678 | 1276 | { |
42120bc7 | 1277 | Display *dpy = FRAME_X_DISPLAY (f); |
82641697 GM |
1278 | int class = FRAME_X_DISPLAY_INFO (f)->visual->class; |
1279 | ||
1280 | if (pixel == BLACK_PIX_DEFAULT (f) | |
1281 | || pixel == WHITE_PIX_DEFAULT (f)) | |
1282 | return; | |
cb637678 | 1283 | |
660ed669 | 1284 | BLOCK_INPUT; |
82641697 GM |
1285 | |
1286 | /* If display has an immutable color map, freeing colors is not | |
1287 | necessary and some servers don't allow it. So don't do it. */ | |
1288 | if (! (class == StaticColor || class == StaticGray || class == TrueColor)) | |
1289 | { | |
1290 | Colormap cmap = DefaultColormapOfScreen (FRAME_X_SCREEN (f)); | |
1291 | XFreeColors (dpy, cmap, &pixel, 1, 0); | |
1292 | } | |
1293 | ||
1294 | UNBLOCK_INPUT; | |
1295 | } | |
1296 | ||
1297 | ||
1298 | /* Free colors allocated for FACE. */ | |
1299 | ||
1300 | static void | |
1301 | free_face_colors (f, face) | |
1302 | struct frame *f; | |
1303 | struct face *face; | |
1304 | { | |
1305 | int class = FRAME_X_DISPLAY_INFO (f)->visual->class; | |
1306 | ||
1307 | /* If display has an immutable color map, freeing colors is not | |
1308 | necessary and some servers don't allow it. So don't do it. */ | |
1309 | if (class != StaticColor | |
1310 | && class != StaticGray | |
1311 | && class != TrueColor) | |
1312 | { | |
1313 | Display *dpy; | |
1314 | Colormap cmap; | |
1315 | ||
1316 | BLOCK_INPUT; | |
1317 | dpy = FRAME_X_DISPLAY (f); | |
1318 | cmap = DefaultColormapOfScreen (FRAME_X_SCREEN (f)); | |
1319 | ||
1320 | if (face->foreground != BLACK_PIX_DEFAULT (f) | |
1321 | && face->foreground != WHITE_PIX_DEFAULT (f) | |
1322 | && !face->foreground_defaulted_p) | |
1323 | { | |
1324 | XFreeColors (dpy, cmap, &face->foreground, 1, 0); | |
1325 | IF_DEBUG (--ncolors_allocated); | |
1326 | } | |
1327 | ||
1328 | if (face->background != BLACK_PIX_DEFAULT (f) | |
1329 | && face->background != WHITE_PIX_DEFAULT (f) | |
1330 | && !face->background_defaulted_p) | |
1331 | { | |
1332 | XFreeColors (dpy, cmap, &face->background, 1, 0); | |
1333 | IF_DEBUG (--ncolors_allocated); | |
1334 | } | |
1335 | ||
1336 | if (face->underline_p | |
1337 | && !face->underline_defaulted_p | |
1338 | && face->underline_color != BLACK_PIX_DEFAULT (f) | |
1339 | && face->underline_color != WHITE_PIX_DEFAULT (f)) | |
1340 | { | |
1341 | XFreeColors (dpy, cmap, &face->underline_color, 1, 0); | |
1342 | IF_DEBUG (--ncolors_allocated); | |
1343 | } | |
1344 | ||
1345 | if (face->overline_p | |
1346 | && !face->overline_color_defaulted_p | |
1347 | && face->overline_color != BLACK_PIX_DEFAULT (f) | |
1348 | && face->overline_color != WHITE_PIX_DEFAULT (f)) | |
1349 | { | |
1350 | XFreeColors (dpy, cmap, &face->overline_color, 1, 0); | |
1351 | IF_DEBUG (--ncolors_allocated); | |
1352 | } | |
1353 | ||
1354 | if (face->strike_through_p | |
1355 | && !face->strike_through_color_defaulted_p | |
1356 | && face->strike_through_color != BLACK_PIX_DEFAULT (f) | |
1357 | && face->strike_through_color != WHITE_PIX_DEFAULT (f)) | |
1358 | { | |
1359 | XFreeColors (dpy, cmap, &face->strike_through_color, 1, 0); | |
1360 | IF_DEBUG (--ncolors_allocated); | |
1361 | } | |
1362 | ||
1363 | if (face->box != FACE_NO_BOX | |
1364 | && !face->box_color_defaulted_p | |
1365 | && face->box_color != BLACK_PIX_DEFAULT (f) | |
1366 | && face->box_color != WHITE_PIX_DEFAULT (f)) | |
1367 | { | |
1368 | XFreeColors (dpy, cmap, &face->box_color, 1, 0); | |
1369 | IF_DEBUG (--ncolors_allocated); | |
1370 | } | |
1371 | ||
1372 | UNBLOCK_INPUT; | |
1373 | } | |
1374 | } | |
1375 | ||
44747bd0 EZ |
1376 | #else /* ! HAVE_X_WINDOWS */ |
1377 | ||
1378 | #ifdef MSDOS | |
1379 | unsigned long | |
1380 | load_color (f, face, name, target_index) | |
1381 | struct frame *f; | |
1382 | struct face *face; | |
1383 | Lisp_Object name; | |
1384 | enum lface_attribute_index target_index; | |
1385 | { | |
1386 | Lisp_Object color; | |
1387 | int color_idx = FACE_TTY_DEFAULT_COLOR; | |
1388 | ||
1389 | if (NILP (name)) | |
1390 | return (unsigned long)FACE_TTY_DEFAULT_COLOR; | |
1391 | ||
1392 | CHECK_STRING (name, 0); | |
1393 | ||
1394 | color = Qnil; | |
1395 | if (XSTRING (name)->size && !NILP (Ffboundp (Qmsdos_color_translate))) | |
1396 | { | |
1397 | color = call1 (Qmsdos_color_translate, name); | |
1398 | ||
1399 | if (INTEGERP (color)) | |
1400 | return (unsigned long)XINT (color); | |
1401 | ||
1402 | display_message (f, "Unable to load color %s", name, Qnil); | |
1403 | ||
1404 | switch (target_index) | |
1405 | { | |
1406 | case LFACE_FOREGROUND_INDEX: | |
1407 | face->foreground_defaulted_p = 1; | |
1408 | color_idx = FRAME_FOREGROUND_PIXEL (f); | |
1409 | break; | |
1410 | ||
1411 | case LFACE_BACKGROUND_INDEX: | |
1412 | face->background_defaulted_p = 1; | |
1413 | color_idx = FRAME_BACKGROUND_PIXEL (f); | |
1414 | break; | |
1415 | ||
1416 | case LFACE_UNDERLINE_INDEX: | |
1417 | face->underline_defaulted_p = 1; | |
1418 | color_idx = FRAME_FOREGROUND_PIXEL (f); | |
1419 | break; | |
1420 | ||
1421 | case LFACE_OVERLINE_INDEX: | |
1422 | face->overline_color_defaulted_p = 1; | |
1423 | color_idx = FRAME_FOREGROUND_PIXEL (f); | |
1424 | break; | |
1425 | ||
1426 | case LFACE_STRIKE_THROUGH_INDEX: | |
1427 | face->strike_through_color_defaulted_p = 1; | |
1428 | color_idx = FRAME_FOREGROUND_PIXEL (f); | |
1429 | break; | |
1430 | ||
1431 | case LFACE_BOX_INDEX: | |
1432 | face->box_color_defaulted_p = 1; | |
1433 | color_idx = FRAME_FOREGROUND_PIXEL (f); | |
1434 | break; | |
1435 | } | |
1436 | } | |
1437 | else | |
1438 | color_idx = msdos_stdcolor_idx (XSTRING (name)->data); | |
1439 | ||
1440 | return (unsigned long)color_idx; | |
1441 | } | |
1442 | #endif /* MSDOS */ | |
1443 | #endif /* ! HAVE_X_WINDOWS */ | |
82641697 GM |
1444 | |
1445 | ||
1446 | \f | |
1447 | /*********************************************************************** | |
1448 | XLFD Font Names | |
1449 | ***********************************************************************/ | |
1450 | ||
1451 | /* An enumerator for each field of an XLFD font name. */ | |
1452 | ||
1453 | enum xlfd_field | |
1454 | { | |
1455 | XLFD_FOUNDRY, | |
1456 | XLFD_FAMILY, | |
1457 | XLFD_WEIGHT, | |
1458 | XLFD_SLANT, | |
1459 | XLFD_SWIDTH, | |
1460 | XLFD_ADSTYLE, | |
1461 | XLFD_PIXEL_SIZE, | |
1462 | XLFD_POINT_SIZE, | |
1463 | XLFD_RESX, | |
1464 | XLFD_RESY, | |
1465 | XLFD_SPACING, | |
1466 | XLFD_AVGWIDTH, | |
1467 | XLFD_REGISTRY, | |
1468 | XLFD_ENCODING, | |
1469 | XLFD_LAST | |
1470 | }; | |
1471 | ||
1472 | /* An enumerator for each possible slant value of a font. Taken from | |
1473 | the XLFD specification. */ | |
1474 | ||
1475 | enum xlfd_slant | |
1476 | { | |
1477 | XLFD_SLANT_UNKNOWN, | |
1478 | XLFD_SLANT_ROMAN, | |
1479 | XLFD_SLANT_ITALIC, | |
1480 | XLFD_SLANT_OBLIQUE, | |
1481 | XLFD_SLANT_REVERSE_ITALIC, | |
1482 | XLFD_SLANT_REVERSE_OBLIQUE, | |
1483 | XLFD_SLANT_OTHER | |
1484 | }; | |
1485 | ||
1486 | /* Relative font weight according to XLFD documentation. */ | |
1487 | ||
1488 | enum xlfd_weight | |
1489 | { | |
1490 | XLFD_WEIGHT_UNKNOWN, | |
1491 | XLFD_WEIGHT_ULTRA_LIGHT, /* 10 */ | |
1492 | XLFD_WEIGHT_EXTRA_LIGHT, /* 20 */ | |
1493 | XLFD_WEIGHT_LIGHT, /* 30 */ | |
1494 | XLFD_WEIGHT_SEMI_LIGHT, /* 40: SemiLight, Book, ... */ | |
1495 | XLFD_WEIGHT_MEDIUM, /* 50: Medium, Normal, Regular, ... */ | |
1496 | XLFD_WEIGHT_SEMI_BOLD, /* 60: SemiBold, DemiBold, ... */ | |
1497 | XLFD_WEIGHT_BOLD, /* 70: Bold, ... */ | |
1498 | XLFD_WEIGHT_EXTRA_BOLD, /* 80: ExtraBold, Heavy, ... */ | |
1499 | XLFD_WEIGHT_ULTRA_BOLD /* 90: UltraBold, Black, ... */ | |
1500 | }; | |
1501 | ||
1502 | /* Relative proportionate width. */ | |
1503 | ||
1504 | enum xlfd_swidth | |
1505 | { | |
1506 | XLFD_SWIDTH_UNKNOWN, | |
1507 | XLFD_SWIDTH_ULTRA_CONDENSED, /* 10 */ | |
1508 | XLFD_SWIDTH_EXTRA_CONDENSED, /* 20 */ | |
1509 | XLFD_SWIDTH_CONDENSED, /* 30: Condensed, Narrow, Compressed, ... */ | |
1510 | XLFD_SWIDTH_SEMI_CONDENSED, /* 40: semicondensed */ | |
1511 | XLFD_SWIDTH_MEDIUM, /* 50: Medium, Normal, Regular, ... */ | |
1512 | XLFD_SWIDTH_SEMI_EXPANDED, /* 60: SemiExpanded, DemiExpanded, ... */ | |
1513 | XLFD_SWIDTH_EXPANDED, /* 70: Expanded... */ | |
1514 | XLFD_SWIDTH_EXTRA_EXPANDED, /* 80: ExtraExpanded, Wide... */ | |
1515 | XLFD_SWIDTH_ULTRA_EXPANDED /* 90: UltraExpanded... */ | |
1516 | }; | |
1517 | ||
1518 | /* Structure used for tables mapping XLFD weight, slant, and width | |
1519 | names to numeric and symbolic values. */ | |
1520 | ||
1521 | struct table_entry | |
1522 | { | |
1523 | char *name; | |
1524 | int numeric; | |
1525 | Lisp_Object *symbol; | |
1526 | }; | |
1527 | ||
1528 | /* Table of XLFD slant names and their numeric and symbolic | |
1529 | representations. This table must be sorted by slant names in | |
1530 | ascending order. */ | |
1531 | ||
1532 | static struct table_entry slant_table[] = | |
1533 | { | |
1534 | {"i", XLFD_SLANT_ITALIC, &Qitalic}, | |
1535 | {"o", XLFD_SLANT_OBLIQUE, &Qoblique}, | |
1536 | {"ot", XLFD_SLANT_OTHER, &Qitalic}, | |
1537 | {"r", XLFD_SLANT_ROMAN, &Qnormal}, | |
1538 | {"ri", XLFD_SLANT_REVERSE_ITALIC, &Qreverse_italic}, | |
1539 | {"ro", XLFD_SLANT_REVERSE_OBLIQUE, &Qreverse_oblique} | |
1540 | }; | |
1541 | ||
1542 | /* Table of XLFD weight names. This table must be sorted by weight | |
1543 | names in ascending order. */ | |
1544 | ||
1545 | static struct table_entry weight_table[] = | |
1546 | { | |
1547 | {"black", XLFD_WEIGHT_ULTRA_BOLD, &Qultra_bold}, | |
1548 | {"bold", XLFD_WEIGHT_BOLD, &Qbold}, | |
1549 | {"book", XLFD_WEIGHT_SEMI_LIGHT, &Qsemi_light}, | |
1550 | {"demibold", XLFD_WEIGHT_SEMI_BOLD, &Qsemi_bold}, | |
1551 | {"extralight", XLFD_WEIGHT_EXTRA_LIGHT, &Qextra_light}, | |
1552 | {"extrabold", XLFD_WEIGHT_EXTRA_BOLD, &Qextra_bold}, | |
1553 | {"heavy", XLFD_WEIGHT_EXTRA_BOLD, &Qextra_bold}, | |
1554 | {"light", XLFD_WEIGHT_LIGHT, &Qlight}, | |
1555 | {"medium", XLFD_WEIGHT_MEDIUM, &Qnormal}, | |
1556 | {"normal", XLFD_WEIGHT_MEDIUM, &Qnormal}, | |
1557 | {"regular", XLFD_WEIGHT_MEDIUM, &Qnormal}, | |
1558 | {"semibold", XLFD_WEIGHT_SEMI_BOLD, &Qsemi_bold}, | |
1559 | {"semilight", XLFD_WEIGHT_SEMI_LIGHT, &Qsemi_light}, | |
1560 | {"ultralight", XLFD_WEIGHT_ULTRA_LIGHT, &Qultra_light}, | |
1561 | {"ultrabold", XLFD_WEIGHT_ULTRA_BOLD, &Qultra_bold} | |
1562 | }; | |
1563 | ||
1564 | /* Table of XLFD width names. This table must be sorted by width | |
1565 | names in ascending order. */ | |
1566 | ||
1567 | static struct table_entry swidth_table[] = | |
1568 | { | |
1569 | {"compressed", XLFD_SWIDTH_CONDENSED, &Qcondensed}, | |
1570 | {"condensed", XLFD_SWIDTH_CONDENSED, &Qcondensed}, | |
1571 | {"demiexpanded", XLFD_SWIDTH_SEMI_EXPANDED, &Qsemi_expanded}, | |
1572 | {"expanded", XLFD_SWIDTH_EXPANDED, &Qexpanded}, | |
1573 | {"extracondensed", XLFD_SWIDTH_EXTRA_CONDENSED, &Qextra_condensed}, | |
1574 | {"extraexpanded", XLFD_SWIDTH_EXTRA_EXPANDED, &Qextra_expanded}, | |
1575 | {"medium", XLFD_SWIDTH_MEDIUM, &Qnormal}, | |
1576 | {"narrow", XLFD_SWIDTH_CONDENSED, &Qcondensed}, | |
1577 | {"normal", XLFD_SWIDTH_MEDIUM, &Qnormal}, | |
1578 | {"regular", XLFD_SWIDTH_MEDIUM, &Qnormal}, | |
1579 | {"semicondensed", XLFD_SWIDTH_SEMI_CONDENSED, &Qsemi_condensed}, | |
1580 | {"semiexpanded", XLFD_SWIDTH_SEMI_EXPANDED, &Qsemi_expanded}, | |
1581 | {"ultracondensed", XLFD_SWIDTH_ULTRA_CONDENSED, &Qultra_condensed}, | |
1582 | {"ultraexpanded", XLFD_SWIDTH_ULTRA_EXPANDED, &Qultra_expanded}, | |
1583 | {"wide", XLFD_SWIDTH_EXTRA_EXPANDED, &Qextra_expanded} | |
1584 | }; | |
1585 | ||
1586 | /* Structure used to hold the result of splitting font names in XLFD | |
1587 | format into their fields. */ | |
1588 | ||
1589 | struct font_name | |
1590 | { | |
1591 | /* The original name which is modified destructively by | |
1592 | split_font_name. The pointer is kept here to be able to free it | |
1593 | if it was allocated from the heap. */ | |
1594 | char *name; | |
1595 | ||
1596 | /* Font name fields. Each vector element points into `name' above. | |
1597 | Fields are NUL-terminated. */ | |
1598 | char *fields[XLFD_LAST]; | |
1599 | ||
1600 | /* Numeric values for those fields that interest us. See | |
1601 | split_font_name for which these are. */ | |
1602 | int numeric[XLFD_LAST]; | |
1603 | }; | |
1604 | ||
1605 | /* The frame in effect when sorting font names. Set temporarily in | |
1606 | sort_fonts so that it is available in font comparison functions. */ | |
1607 | ||
1608 | static struct frame *font_frame; | |
1609 | ||
1610 | /* Order by which font selection chooses fonts. The default values | |
1611 | mean `first, find a best match for the font width, then for the | |
1612 | font height, then for weight, then for slant.' This variable can be | |
1613 | set via set-face-font-sort-order. */ | |
1614 | ||
1615 | static int font_sort_order[4]; | |
1616 | ||
1617 | ||
1618 | /* Look up FONT.fields[FIELD_INDEX] in TABLE which has DIM entries. | |
1619 | TABLE must be sorted by TABLE[i]->name in ascending order. Value | |
1620 | is a pointer to the matching table entry or null if no table entry | |
1621 | matches. */ | |
1622 | ||
1623 | static struct table_entry * | |
1624 | xlfd_lookup_field_contents (table, dim, font, field_index) | |
1625 | struct table_entry *table; | |
1626 | int dim; | |
1627 | struct font_name *font; | |
1628 | int field_index; | |
1629 | { | |
1630 | /* Function split_font_name converts fields to lower-case, so there | |
1631 | is no need to use xstrlwr or xstricmp here. */ | |
1632 | char *s = font->fields[field_index]; | |
1633 | int low, mid, high, cmp; | |
1634 | ||
1635 | low = 0; | |
1636 | high = dim - 1; | |
1637 | ||
1638 | while (low <= high) | |
1639 | { | |
1640 | mid = (low + high) / 2; | |
1641 | cmp = strcmp (table[mid].name, s); | |
1642 | ||
1643 | if (cmp < 0) | |
1644 | low = mid + 1; | |
1645 | else if (cmp > 0) | |
1646 | high = mid - 1; | |
1647 | else | |
1648 | return table + mid; | |
1649 | } | |
1650 | ||
1651 | return NULL; | |
1652 | } | |
1653 | ||
1654 | ||
1655 | /* Return a numeric representation for font name field | |
1656 | FONT.fields[FIELD_INDEX]. The field is looked up in TABLE which | |
1657 | has DIM entries. Value is the numeric value found or DFLT if no | |
1658 | table entry matches. This function is used to translate weight, | |
1659 | slant, and swidth names of XLFD font names to numeric values. */ | |
1660 | ||
1661 | static INLINE int | |
1662 | xlfd_numeric_value (table, dim, font, field_index, dflt) | |
1663 | struct table_entry *table; | |
1664 | int dim; | |
1665 | struct font_name *font; | |
1666 | int field_index; | |
1667 | int dflt; | |
1668 | { | |
1669 | struct table_entry *p; | |
1670 | p = xlfd_lookup_field_contents (table, dim, font, field_index); | |
1671 | return p ? p->numeric : dflt; | |
1672 | } | |
1673 | ||
1674 | ||
1675 | /* Return a symbolic representation for font name field | |
1676 | FONT.fields[FIELD_INDEX]. The field is looked up in TABLE which | |
1677 | has DIM entries. Value is the symbolic value found or DFLT if no | |
1678 | table entry matches. This function is used to translate weight, | |
1679 | slant, and swidth names of XLFD font names to symbols. */ | |
1680 | ||
1681 | static INLINE Lisp_Object | |
1682 | xlfd_symbolic_value (table, dim, font, field_index, dflt) | |
1683 | struct table_entry *table; | |
1684 | int dim; | |
1685 | struct font_name *font; | |
1686 | int field_index; | |
1687 | int dflt; | |
1688 | { | |
1689 | struct table_entry *p; | |
1690 | p = xlfd_lookup_field_contents (table, dim, font, field_index); | |
1691 | return p ? *p->symbol : dflt; | |
1692 | } | |
1693 | ||
1694 | ||
1695 | /* Return a numeric value for the slant of the font given by FONT. */ | |
1696 | ||
1697 | static INLINE int | |
1698 | xlfd_numeric_slant (font) | |
1699 | struct font_name *font; | |
1700 | { | |
1701 | return xlfd_numeric_value (slant_table, DIM (slant_table), | |
1702 | font, XLFD_SLANT, XLFD_SLANT_ROMAN); | |
1703 | } | |
1704 | ||
1705 | ||
1706 | /* Return a symbol representing the weight of the font given by FONT. */ | |
1707 | ||
1708 | static INLINE Lisp_Object | |
1709 | xlfd_symbolic_slant (font) | |
1710 | struct font_name *font; | |
1711 | { | |
1712 | return xlfd_symbolic_value (slant_table, DIM (slant_table), | |
1713 | font, XLFD_SLANT, Qnormal); | |
1714 | } | |
1715 | ||
1716 | ||
1717 | /* Return a numeric value for the weight of the font given by FONT. */ | |
1718 | ||
1719 | static INLINE int | |
1720 | xlfd_numeric_weight (font) | |
1721 | struct font_name *font; | |
1722 | { | |
1723 | return xlfd_numeric_value (weight_table, DIM (weight_table), | |
1724 | font, XLFD_WEIGHT, XLFD_WEIGHT_MEDIUM); | |
1725 | } | |
1726 | ||
1727 | ||
1728 | /* Return a symbol representing the slant of the font given by FONT. */ | |
1729 | ||
1730 | static INLINE Lisp_Object | |
1731 | xlfd_symbolic_weight (font) | |
1732 | struct font_name *font; | |
1733 | { | |
1734 | return xlfd_symbolic_value (weight_table, DIM (weight_table), | |
1735 | font, XLFD_WEIGHT, Qnormal); | |
1736 | } | |
1737 | ||
1738 | ||
1739 | /* Return a numeric value for the swidth of the font whose XLFD font | |
1740 | name fields are found in FONT. */ | |
1741 | ||
1742 | static INLINE int | |
1743 | xlfd_numeric_swidth (font) | |
1744 | struct font_name *font; | |
1745 | { | |
1746 | return xlfd_numeric_value (swidth_table, DIM (swidth_table), | |
1747 | font, XLFD_SWIDTH, XLFD_SWIDTH_MEDIUM); | |
1748 | } | |
1749 | ||
1750 | ||
1751 | /* Return a symbolic value for the swidth of FONT. */ | |
1752 | ||
1753 | static INLINE Lisp_Object | |
1754 | xlfd_symbolic_swidth (font) | |
1755 | struct font_name *font; | |
1756 | { | |
1757 | return xlfd_symbolic_value (swidth_table, DIM (swidth_table), | |
1758 | font, XLFD_SWIDTH, Qnormal); | |
1759 | } | |
1760 | ||
1761 | ||
1762 | /* Look up the entry of SYMBOL in the vector TABLE which has DIM | |
1763 | entries. Value is a pointer to the matching table entry or null if | |
1764 | no element of TABLE contains SYMBOL. */ | |
1765 | ||
1766 | static struct table_entry * | |
1767 | face_value (table, dim, symbol) | |
1768 | struct table_entry *table; | |
1769 | int dim; | |
1770 | Lisp_Object symbol; | |
1771 | { | |
1772 | int i; | |
1773 | ||
1774 | xassert (SYMBOLP (symbol)); | |
1775 | ||
1776 | for (i = 0; i < dim; ++i) | |
1777 | if (EQ (*table[i].symbol, symbol)) | |
1778 | break; | |
1779 | ||
1780 | return i < dim ? table + i : NULL; | |
1781 | } | |
1782 | ||
1783 | ||
1784 | /* Return a numeric value for SYMBOL in the vector TABLE which has DIM | |
1785 | entries. Value is -1 if SYMBOL is not found in TABLE. */ | |
1786 | ||
1787 | static INLINE int | |
1788 | face_numeric_value (table, dim, symbol) | |
1789 | struct table_entry *table; | |
1790 | int dim; | |
1791 | Lisp_Object symbol; | |
1792 | { | |
1793 | struct table_entry *p = face_value (table, dim, symbol); | |
1794 | return p ? p->numeric : -1; | |
1795 | } | |
1796 | ||
1797 | ||
1798 | /* Return a numeric value representing the weight specified by Lisp | |
1799 | symbol WEIGHT. Value is one of the enumerators of enum | |
1800 | xlfd_weight. */ | |
1801 | ||
1802 | static INLINE int | |
1803 | face_numeric_weight (weight) | |
1804 | Lisp_Object weight; | |
1805 | { | |
1806 | return face_numeric_value (weight_table, DIM (weight_table), weight); | |
1807 | } | |
1808 | ||
1809 | ||
1810 | /* Return a numeric value representing the slant specified by Lisp | |
1811 | symbol SLANT. Value is one of the enumerators of enum xlfd_slant. */ | |
1812 | ||
1813 | static INLINE int | |
1814 | face_numeric_slant (slant) | |
1815 | Lisp_Object slant; | |
1816 | { | |
1817 | return face_numeric_value (slant_table, DIM (slant_table), slant); | |
1818 | } | |
1819 | ||
1820 | ||
1821 | /* Return a numeric value representing the swidth specified by Lisp | |
1822 | symbol WIDTH. Value is one of the enumerators of enum xlfd_swidth. */ | |
1823 | ||
1824 | static int | |
1825 | face_numeric_swidth (width) | |
1826 | Lisp_Object width; | |
1827 | { | |
1828 | return face_numeric_value (swidth_table, DIM (swidth_table), width); | |
1829 | } | |
1830 | ||
1831 | ||
1832 | #ifdef HAVE_X_WINDOWS | |
1833 | ||
1834 | /* Return non-zero if FONT is the name of a fixed-pitch font. */ | |
1835 | ||
1836 | static INLINE int | |
1837 | xlfd_fixed_p (font) | |
1838 | struct font_name *font; | |
1839 | { | |
1840 | /* Function split_font_name converts fields to lower-case, so there | |
1841 | is no need to use tolower here. */ | |
1842 | return *font->fields[XLFD_SPACING] != 'p'; | |
1843 | } | |
1844 | ||
1845 | ||
1846 | /* Return the point size of FONT on frame F, measured in 1/10 pt. | |
1847 | ||
1848 | The actual height of the font when displayed on F depends on the | |
1849 | resolution of both the font and frame. For example, a 10pt font | |
1850 | designed for a 100dpi display will display larger than 10pt on a | |
1851 | 75dpi display. (It's not unusual to use fonts not designed for the | |
1852 | display one is using. For example, some intlfonts are available in | |
1853 | 72dpi versions, only.) | |
1854 | ||
1855 | Value is the real point size of FONT on frame F, or 0 if it cannot | |
1856 | be determined. */ | |
1857 | ||
1858 | static INLINE int | |
1859 | xlfd_point_size (f, font) | |
1860 | struct frame *f; | |
1861 | struct font_name *font; | |
1862 | { | |
1863 | double resy = FRAME_X_DISPLAY_INFO (f)->resy; | |
1864 | double font_resy = atoi (font->fields[XLFD_RESY]); | |
1865 | double font_pt = atoi (font->fields[XLFD_POINT_SIZE]); | |
1866 | int real_pt; | |
1867 | ||
1868 | if (font_resy == 0 || font_pt == 0) | |
1869 | real_pt = 0; | |
1870 | else | |
1871 | real_pt = (font_resy / resy) * font_pt + 0.5; | |
1872 | ||
1873 | return real_pt; | |
1874 | } | |
1875 | ||
1876 | ||
1877 | /* Split XLFD font name FONT->name destructively into NUL-terminated, | |
1878 | lower-case fields in FONT->fields. NUMERIC_P non-zero means | |
1879 | compute numeric values for fields XLFD_POINT_SIZE, XLFD_SWIDTH, | |
1880 | XLFD_RESY, XLFD_SLANT, and XLFD_WEIGHT in FONT->numeric. Value is | |
1881 | zero if the font name doesn't have the format we expect. The | |
1882 | expected format is a font name that starts with a `-' and has | |
1883 | XLFD_LAST fields separated by `-'. (The XLFD specification allows | |
1884 | forms of font names where certain field contents are enclosed in | |
1885 | square brackets. We don't support that, for now. */ | |
1886 | ||
1887 | static int | |
1888 | split_font_name (f, font, numeric_p) | |
1889 | struct frame *f; | |
1890 | struct font_name *font; | |
1891 | int numeric_p; | |
1892 | { | |
1893 | int i = 0; | |
1894 | int success_p; | |
1895 | ||
1896 | if (*font->name == '-') | |
1897 | { | |
1898 | char *p = xstrlwr (font->name) + 1; | |
1899 | ||
1900 | while (i < XLFD_LAST) | |
1901 | { | |
1902 | font->fields[i] = p; | |
1903 | ++i; | |
1904 | ||
1905 | while (*p && *p != '-') | |
1906 | ++p; | |
1907 | ||
1908 | if (*p != '-') | |
1909 | break; | |
1910 | ||
1911 | *p++ = 0; | |
1912 | } | |
1913 | } | |
1914 | ||
1915 | success_p = i == XLFD_LAST; | |
1916 | ||
1917 | /* If requested, and font name was in the expected format, | |
1918 | compute numeric values for some fields. */ | |
1919 | if (numeric_p && success_p) | |
1920 | { | |
1921 | font->numeric[XLFD_POINT_SIZE] = xlfd_point_size (f, font); | |
1922 | font->numeric[XLFD_RESY] = atoi (font->fields[XLFD_RESY]); | |
1923 | font->numeric[XLFD_SLANT] = xlfd_numeric_slant (font); | |
1924 | font->numeric[XLFD_WEIGHT] = xlfd_numeric_weight (font); | |
1925 | font->numeric[XLFD_SWIDTH] = xlfd_numeric_swidth (font); | |
1926 | } | |
1927 | ||
1928 | return success_p; | |
1929 | } | |
1930 | ||
1931 | ||
1932 | /* Build an XLFD font name from font name fields in FONT. Value is a | |
1933 | pointer to the font name, which is allocated via xmalloc. */ | |
1934 | ||
1935 | static char * | |
1936 | build_font_name (font) | |
1937 | struct font_name *font; | |
1938 | { | |
1939 | int i; | |
1940 | int size = 100; | |
1941 | char *font_name = (char *) xmalloc (size); | |
1942 | int total_length = 0; | |
1943 | ||
1944 | for (i = 0; i < XLFD_LAST; ++i) | |
1945 | { | |
1946 | /* Add 1 because of the leading `-'. */ | |
1947 | int len = strlen (font->fields[i]) + 1; | |
1948 | ||
1949 | /* Reallocate font_name if necessary. Add 1 for the final | |
1950 | NUL-byte. */ | |
1951 | if (total_length + len + 1 >= size) | |
1952 | { | |
1953 | int new_size = max (2 * size, size + len + 1); | |
1954 | int sz = new_size * sizeof *font_name; | |
1955 | font_name = (char *) xrealloc (font_name, sz); | |
1956 | size = new_size; | |
1957 | } | |
1958 | ||
1959 | font_name[total_length] = '-'; | |
1960 | bcopy (font->fields[i], font_name + total_length + 1, len - 1); | |
1961 | total_length += len; | |
1962 | } | |
1963 | ||
1964 | font_name[total_length] = 0; | |
1965 | return font_name; | |
1966 | } | |
1967 | ||
1968 | ||
1969 | /* Free an array FONTS of N font_name structures. This frees FONTS | |
1970 | itself and all `name' fields in its elements. */ | |
1971 | ||
1972 | static INLINE void | |
1973 | free_font_names (fonts, n) | |
1974 | struct font_name *fonts; | |
1975 | int n; | |
1976 | { | |
1977 | while (n) | |
1978 | xfree (fonts[--n].name); | |
1979 | xfree (fonts); | |
1980 | } | |
1981 | ||
1982 | ||
1983 | /* Sort vector FONTS of font_name structures which contains NFONTS | |
1984 | elements using qsort and comparison function CMPFN. F is the frame | |
1985 | on which the fonts will be used. The global variable font_frame | |
1986 | is temporarily set to F to make it available in CMPFN. */ | |
1987 | ||
1988 | static INLINE void | |
1989 | sort_fonts (f, fonts, nfonts, cmpfn) | |
1990 | struct frame *f; | |
1991 | struct font_name *fonts; | |
1992 | int nfonts; | |
1993 | int (*cmpfn) P_ ((const void *, const void *)); | |
1994 | { | |
1995 | font_frame = f; | |
1996 | qsort (fonts, nfonts, sizeof *fonts, cmpfn); | |
1997 | font_frame = NULL; | |
1998 | } | |
1999 | ||
2000 | ||
2001 | /* Get fonts matching PATTERN on frame F. If F is null, use the first | |
2002 | display in x_display_list. FONTS is a pointer to a vector of | |
2003 | NFONTS font_name structures. TRY_ALTERNATIVES_P non-zero means try | |
2004 | alternative patterns from Valternate_fontname_alist if no fonts are | |
2005 | found matching PATTERN. SCALABLE_FONTS_P non-zero means include | |
2006 | scalable fonts. | |
2007 | ||
2008 | For all fonts found, set FONTS[i].name to the name of the font, | |
2009 | allocated via xmalloc, and split font names into fields. Ignore | |
2010 | fonts that we can't parse. Value is the number of fonts found. | |
2011 | ||
2012 | This is similar to x_list_fonts. The differences are: | |
2013 | ||
2014 | 1. It avoids consing. | |
2015 | 2. It never calls XLoadQueryFont. */ | |
2016 | ||
2017 | static int | |
2018 | x_face_list_fonts (f, pattern, fonts, nfonts, try_alternatives_p, | |
2019 | scalable_fonts_p) | |
2020 | struct frame *f; | |
2021 | char *pattern; | |
2022 | struct font_name *fonts; | |
2023 | int nfonts, try_alternatives_p; | |
2024 | int scalable_fonts_p; | |
2025 | { | |
2026 | Display *dpy = f ? FRAME_X_DISPLAY (f) : x_display_list->display; | |
2027 | int n, i, j; | |
2028 | char **names; | |
2029 | ||
2030 | /* Get the list of fonts matching PATTERN from the X server. */ | |
2031 | BLOCK_INPUT; | |
2032 | names = XListFonts (dpy, pattern, nfonts, &n); | |
2033 | UNBLOCK_INPUT; | |
2034 | ||
2035 | if (names) | |
2036 | { | |
2037 | /* Make a copy of the font names we got from X, and | |
2038 | split them into fields. */ | |
2039 | for (i = j = 0; i < n; ++i) | |
2040 | { | |
2041 | /* Make a copy of the font name. */ | |
2042 | fonts[j].name = xstrdup (names[i]); | |
2043 | ||
2044 | /* Ignore fonts having a name that we can't parse. */ | |
2045 | if (!split_font_name (f, fonts + j, 1)) | |
2046 | xfree (fonts[j].name); | |
2047 | else if (font_scalable_p (fonts + j)) | |
2048 | { | |
2049 | #if SCALABLE_FONTS | |
2050 | if (!scalable_fonts_p | |
2051 | || !may_use_scalable_font_p (fonts + j, names[i])) | |
2052 | xfree (fonts[j].name); | |
2053 | else | |
2054 | ++j; | |
2055 | #else /* !SCALABLE_FONTS */ | |
2056 | /* Always ignore scalable fonts. */ | |
2057 | xfree (fonts[j].name); | |
2058 | #endif /* !SCALABLE_FONTS */ | |
2059 | } | |
2060 | else | |
2061 | ++j; | |
2062 | } | |
2063 | ||
2064 | n = j; | |
2065 | ||
2066 | /* Free font names. */ | |
2067 | BLOCK_INPUT; | |
2068 | XFreeFontNames (names); | |
2069 | UNBLOCK_INPUT; | |
2070 | } | |
2071 | ||
2072 | ||
2073 | /* If no fonts found, try patterns from Valternate_fontname_alist. */ | |
2074 | if (n == 0 && try_alternatives_p) | |
2075 | { | |
2076 | Lisp_Object list = Valternate_fontname_alist; | |
2077 | ||
2078 | while (CONSP (list)) | |
2079 | { | |
2080 | Lisp_Object entry = XCAR (list); | |
2081 | if (CONSP (entry) | |
2082 | && STRINGP (XCAR (entry)) | |
2083 | && strcmp (XSTRING (XCAR (entry))->data, pattern) == 0) | |
2084 | break; | |
2085 | list = XCDR (list); | |
2086 | } | |
2087 | ||
2088 | if (CONSP (list)) | |
2089 | { | |
2090 | Lisp_Object patterns = XCAR (list); | |
2091 | Lisp_Object name; | |
2092 | ||
2093 | while (CONSP (patterns) | |
2094 | /* If list is screwed up, give up. */ | |
2095 | && (name = XCAR (patterns), | |
2096 | STRINGP (name)) | |
2097 | /* Ignore patterns equal to PATTERN because we tried that | |
2098 | already with no success. */ | |
2099 | && (strcmp (XSTRING (name)->data, pattern) == 0 | |
2100 | || (n = x_face_list_fonts (f, XSTRING (name)->data, | |
2101 | fonts, nfonts, 0, | |
2102 | scalable_fonts_p), | |
2103 | n == 0))) | |
2104 | patterns = XCDR (patterns); | |
2105 | } | |
2106 | } | |
2107 | ||
2108 | return n; | |
2109 | } | |
2110 | ||
2111 | ||
2112 | /* Determine the first font matching PATTERN on frame F. Return in | |
2113 | *FONT the matching font name, split into fields. Value is non-zero | |
2114 | if a match was found. */ | |
2115 | ||
2116 | static int | |
2117 | first_font_matching (f, pattern, font) | |
2118 | struct frame *f; | |
2119 | char *pattern; | |
2120 | struct font_name *font; | |
2121 | { | |
2122 | int nfonts = 100; | |
2123 | struct font_name *fonts; | |
2124 | ||
2125 | fonts = (struct font_name *) xmalloc (nfonts * sizeof *fonts); | |
2126 | nfonts = x_face_list_fonts (f, pattern, fonts, nfonts, 1, 0); | |
2127 | ||
2128 | if (nfonts > 0) | |
2129 | { | |
2130 | bcopy (&fonts[0], font, sizeof *font); | |
2131 | ||
2132 | fonts[0].name = NULL; | |
2133 | free_font_names (fonts, nfonts); | |
2134 | } | |
2135 | ||
2136 | return nfonts > 0; | |
2137 | } | |
2138 | ||
2139 | ||
2140 | /* Determine fonts matching PATTERN on frame F. Sort resulting fonts | |
2141 | using comparison function CMPFN. Value is the number of fonts | |
2142 | found. If value is non-zero, *FONTS is set to a vector of | |
2143 | font_name structures allocated from the heap containing matching | |
2144 | fonts. Each element of *FONTS contains a name member that is also | |
2145 | allocated from the heap. Font names in these structures are split | |
2146 | into fields. Use free_font_names to free such an array. */ | |
2147 | ||
2148 | static int | |
2149 | sorted_font_list (f, pattern, cmpfn, fonts) | |
2150 | struct frame *f; | |
2151 | char *pattern; | |
2152 | int (*cmpfn) P_ ((const void *, const void *)); | |
2153 | struct font_name **fonts; | |
2154 | { | |
2155 | int nfonts; | |
2156 | ||
2157 | /* Get the list of fonts matching pattern. 100 should suffice. */ | |
2158 | nfonts = 100; | |
2159 | *fonts = (struct font_name *) xmalloc (nfonts * sizeof **fonts); | |
2160 | #if SCALABLE_FONTS | |
2161 | nfonts = x_face_list_fonts (f, pattern, *fonts, nfonts, 1, 1); | |
2162 | #else | |
2163 | nfonts = x_face_list_fonts (f, pattern, *fonts, nfonts, 1, 0); | |
2164 | #endif | |
2165 | ||
2166 | /* Sort the resulting array and return it in *FONTS. If no | |
2167 | fonts were found, make sure to set *FONTS to null. */ | |
2168 | if (nfonts) | |
2169 | sort_fonts (f, *fonts, nfonts, cmpfn); | |
2170 | else | |
2171 | { | |
2172 | xfree (*fonts); | |
2173 | *fonts = NULL; | |
2174 | } | |
2175 | ||
2176 | return nfonts; | |
2177 | } | |
2178 | ||
2179 | ||
2180 | /* Compare two font_name structures *A and *B. Value is analogous to | |
2181 | strcmp. Sort order is given by the global variable | |
2182 | font_sort_order. Font names are sorted so that, everything else | |
2183 | being equal, fonts with a resolution closer to that of the frame on | |
2184 | which they are used are listed first. The global variable | |
2185 | font_frame is the frame on which we operate. */ | |
2186 | ||
2187 | static int | |
2188 | cmp_font_names (a, b) | |
2189 | const void *a, *b; | |
2190 | { | |
2191 | struct font_name *x = (struct font_name *) a; | |
2192 | struct font_name *y = (struct font_name *) b; | |
2193 | int cmp; | |
2194 | ||
2195 | /* All strings have been converted to lower-case by split_font_name, | |
2196 | so we can use strcmp here. */ | |
2197 | cmp = strcmp (x->fields[XLFD_FAMILY], y->fields[XLFD_FAMILY]); | |
2198 | if (cmp == 0) | |
2199 | { | |
2200 | int i; | |
2201 | ||
2202 | for (i = 0; i < DIM (font_sort_order) && cmp == 0; ++i) | |
2203 | { | |
2204 | int j = font_sort_order[i]; | |
2205 | cmp = x->numeric[j] - y->numeric[j]; | |
2206 | } | |
2207 | ||
2208 | if (cmp == 0) | |
2209 | { | |
2210 | /* Everything else being equal, we prefer fonts with an | |
2211 | y-resolution closer to that of the frame. */ | |
2212 | int resy = FRAME_X_DISPLAY_INFO (font_frame)->resy; | |
2213 | int x_resy = x->numeric[XLFD_RESY]; | |
2214 | int y_resy = y->numeric[XLFD_RESY]; | |
2215 | cmp = abs (resy - x_resy) - abs (resy - y_resy); | |
2216 | } | |
2217 | } | |
2218 | ||
2219 | return cmp; | |
2220 | } | |
2221 | ||
2222 | ||
2223 | /* Get a sorted list of fonts of family FAMILY on frame F. If PATTERN | |
2224 | is non-null list fonts matching that pattern. Otherwise, if | |
2225 | REGISTRY_AND_ENCODING is non-null return only fonts with that | |
2226 | registry and encoding, otherwise return fonts of any registry and | |
2227 | encoding. Set *FONTS to a vector of font_name structures allocated | |
2228 | from the heap containing the fonts found. Value is the number of | |
2229 | fonts found. */ | |
2230 | ||
2231 | static int | |
2232 | font_list (f, pattern, family, registry_and_encoding, fonts) | |
2233 | struct frame *f; | |
2234 | char *pattern; | |
2235 | char *family; | |
2236 | char *registry_and_encoding; | |
2237 | struct font_name **fonts; | |
2238 | { | |
2239 | if (pattern == NULL) | |
2240 | { | |
2241 | if (family == NULL) | |
2242 | family = "*"; | |
2243 | ||
2244 | if (registry_and_encoding == NULL) | |
2245 | registry_and_encoding = "*"; | |
2246 | ||
2247 | pattern = (char *) alloca (strlen (family) | |
2248 | + strlen (registry_and_encoding) | |
2249 | + 10); | |
2250 | if (index (family, '-')) | |
2251 | sprintf (pattern, "-%s-*-%s", family, registry_and_encoding); | |
2252 | else | |
2253 | sprintf (pattern, "-*-%s-*-%s", family, registry_and_encoding); | |
2254 | } | |
2255 | ||
2256 | return sorted_font_list (f, pattern, cmp_font_names, fonts); | |
2257 | } | |
2258 | ||
2259 | ||
2260 | /* Remove elements from LIST whose cars are `equal'. Called from | |
2261 | x-font-list and x-font-family-list to remove duplicate font | |
2262 | entries. */ | |
2263 | ||
2264 | static void | |
2265 | remove_duplicates (list) | |
2266 | Lisp_Object list; | |
2267 | { | |
2268 | Lisp_Object tail = list; | |
2269 | ||
2270 | while (!NILP (tail) && !NILP (XCDR (tail))) | |
2271 | { | |
2272 | Lisp_Object next = XCDR (tail); | |
2273 | if (!NILP (Fequal (XCAR (next), XCAR (tail)))) | |
2274 | XCDR (tail) = XCDR (next); | |
2275 | else | |
2276 | tail = XCDR (tail); | |
2277 | } | |
2278 | } | |
2279 | ||
2280 | ||
2281 | DEFUN ("x-font-list", Fxfont_list, Sx_font_list, 0, 2, 0, | |
2282 | "Return a list of available fonts of family FAMILY on FRAME.\n\ | |
2283 | If FAMILY is omitted or nil, list all families.\n\ | |
2284 | Otherwise, FAMILY must be a string, possibly containing wildcards\n\ | |
2285 | `?' and `*'.\n\ | |
2286 | If FRAME is omitted or nil, use the selected frame.\n\ | |
2287 | Each element of the result is a vector [FAMILY WIDTH POINT-SIZE WEIGHT\n\ | |
2288 | SLANT FIXED-P].\n\ | |
2289 | FAMILY is the font family name. POINT-SIZE is the size of the\n\ | |
2290 | font in 1/10 pt. WIDTH, WEIGHT, and SLANT are symbols describing the\n\ | |
2291 | width, weight and slant of the font. These symbols are the same as for\n\ | |
2292 | face attributes. FIXED-P is non-nil if the font is fixed-pitch.\n\ | |
2293 | The result list is sorted according to the current setting of\n\ | |
2294 | the face font sort order.") | |
2295 | (family, frame) | |
2296 | Lisp_Object family, frame; | |
2297 | { | |
2298 | struct frame *f = check_x_frame (frame); | |
2299 | struct font_name *fonts; | |
2300 | int i, nfonts; | |
2301 | Lisp_Object result; | |
2302 | struct gcpro gcpro1; | |
2303 | char *family_pattern; | |
2304 | ||
2305 | if (NILP (family)) | |
2306 | family_pattern = "*"; | |
2307 | else | |
2308 | { | |
2309 | CHECK_STRING (family, 1); | |
2310 | family_pattern = LSTRDUPA (family); | |
2311 | } | |
2312 | ||
2313 | result = Qnil; | |
2314 | GCPRO1 (result); | |
2315 | nfonts = font_list (f, NULL, family_pattern, NULL, &fonts); | |
2316 | for (i = nfonts - 1; i >= 0; --i) | |
2317 | { | |
2318 | Lisp_Object v = Fmake_vector (make_number (6), Qnil); | |
2319 | ||
2320 | #define ASET(VECTOR, IDX, VAL) (XVECTOR (VECTOR)->contents[IDX] = (VAL)) | |
2321 | ||
2322 | ASET (v, 0, build_string (fonts[i].fields[XLFD_FAMILY])); | |
2323 | ASET (v, 1, xlfd_symbolic_swidth (fonts + i)); | |
2324 | ASET (v, 2, make_number (xlfd_point_size (f, fonts + i))); | |
2325 | ASET (v, 3, xlfd_symbolic_weight (fonts + i)); | |
2326 | ASET (v, 4, xlfd_symbolic_slant (fonts + i)); | |
2327 | ASET (v, 5, xlfd_fixed_p (fonts + i) ? Qt : Qnil); | |
2328 | result = Fcons (v, result); | |
2329 | ||
2330 | #undef ASET | |
2331 | } | |
2332 | ||
2333 | remove_duplicates (result); | |
2334 | free_font_names (fonts, nfonts); | |
2335 | UNGCPRO; | |
2336 | return result; | |
2337 | } | |
2338 | ||
2339 | ||
2340 | DEFUN ("x-font-family-list", Fx_font_family_list, Sx_font_family_list, | |
2341 | 0, 1, 0, | |
2342 | "Return a list of available font families on FRAME.\n\ | |
2343 | If FRAME is omitted or nil, use the selected frame.\n\ | |
2344 | Value is a list of conses (FAMILY . FIXED-P) where FAMILY\n\ | |
2345 | is a font family, and FIXED-P is non-nil if fonts of that family\n\ | |
2346 | are fixed-pitch.") | |
2347 | (frame) | |
2348 | Lisp_Object frame; | |
2349 | { | |
2350 | struct frame *f = check_x_frame (frame); | |
2351 | int nfonts, i; | |
2352 | struct font_name *fonts; | |
2353 | Lisp_Object result; | |
2354 | struct gcpro gcpro1; | |
2355 | ||
2356 | nfonts = font_list (f, NULL, "*", NULL, &fonts); | |
2357 | result = Qnil; | |
2358 | GCPRO1 (result); | |
2359 | for (i = nfonts - 1; i >= 0; --i) | |
2360 | result = Fcons (Fcons (build_string (fonts[i].fields[XLFD_FAMILY]), | |
2361 | xlfd_fixed_p (fonts + i) ? Qt : Qnil), | |
2362 | result); | |
2363 | ||
2364 | remove_duplicates (result); | |
2365 | free_font_names (fonts, nfonts); | |
2366 | UNGCPRO; | |
2367 | return result; | |
2368 | } | |
2369 | ||
2370 | ||
2371 | DEFUN ("x-list-fonts", Fx_list_fonts, Sx_list_fonts, 1, 5, 0, | |
2372 | "Return a list of the names of available fonts matching PATTERN.\n\ | |
2373 | If optional arguments FACE and FRAME are specified, return only fonts\n\ | |
2374 | the same size as FACE on FRAME.\n\ | |
2375 | PATTERN is a string, perhaps with wildcard characters;\n\ | |
2376 | the * character matches any substring, and\n\ | |
2377 | the ? character matches any single character.\n\ | |
2378 | PATTERN is case-insensitive.\n\ | |
2379 | FACE is a face name--a symbol.\n\ | |
2380 | \n\ | |
2381 | The return value is a list of strings, suitable as arguments to\n\ | |
2382 | set-face-font.\n\ | |
2383 | \n\ | |
2384 | Fonts Emacs can't use may or may not be excluded\n\ | |
2385 | even if they match PATTERN and FACE.\n\ | |
2386 | The optional fourth argument MAXIMUM sets a limit on how many\n\ | |
2387 | fonts to match. The first MAXIMUM fonts are reported.\n\ | |
2388 | The optional fifth argument WIDTH, if specified, is a number of columns\n\ | |
2389 | occupied by a character of a font. In that case, return only fonts\n\ | |
2390 | the WIDTH times as wide as FACE on FRAME.") | |
2391 | (pattern, face, frame, maximum, width) | |
2392 | Lisp_Object pattern, face, frame, maximum, width; | |
2393 | { | |
2394 | struct frame *f; | |
2395 | int size; | |
2396 | int maxnames; | |
2397 | ||
2398 | check_x (); | |
2399 | CHECK_STRING (pattern, 0); | |
2400 | ||
2401 | if (NILP (maximum)) | |
2402 | maxnames = 2000; | |
2403 | else | |
2404 | { | |
2405 | CHECK_NATNUM (maximum, 0); | |
2406 | maxnames = XINT (maximum); | |
2407 | } | |
2408 | ||
2409 | if (!NILP (width)) | |
2410 | CHECK_NUMBER (width, 4); | |
2411 | ||
2412 | /* We can't simply call check_x_frame because this function may be | |
2413 | called before any frame is created. */ | |
2414 | f = frame_or_selected_frame (frame, 2); | |
2415 | if (!FRAME_X_P (f)) | |
2416 | { | |
2417 | /* Perhaps we have not yet created any frame. */ | |
2418 | f = NULL; | |
2419 | face = Qnil; | |
2420 | } | |
2421 | ||
2422 | /* Determine the width standard for comparison with the fonts we find. */ | |
2423 | ||
2424 | if (NILP (face)) | |
2425 | size = 0; | |
2426 | else | |
2427 | { | |
2428 | /* This is of limited utility since it works with character | |
2429 | widths. Keep it for compatibility. --gerd. */ | |
2430 | int face_id = lookup_named_face (f, face, CHARSET_ASCII); | |
2431 | struct face *face = FACE_FROM_ID (f, face_id); | |
2432 | ||
2433 | if (face->font) | |
2434 | size = face->font->max_bounds.width; | |
2435 | else | |
2436 | size = FRAME_FONT (f)->max_bounds.width; | |
2437 | ||
2438 | if (!NILP (width)) | |
2439 | size *= XINT (width); | |
2440 | } | |
2441 | ||
2442 | { | |
2443 | Lisp_Object args[2]; | |
2444 | ||
2445 | args[0] = x_list_fonts (f, pattern, size, maxnames); | |
2446 | if (f == NULL) | |
2447 | /* We don't have to check fontsets. */ | |
2448 | return args[0]; | |
2449 | args[1] = list_fontsets (f, pattern, size); | |
2450 | return Fnconc (2, args); | |
2451 | } | |
2452 | } | |
2453 | ||
2454 | #endif /* HAVE_X_WINDOWS */ | |
2455 | ||
2456 | ||
2457 | \f | |
2458 | /*********************************************************************** | |
2459 | Lisp Faces | |
2460 | ***********************************************************************/ | |
2461 | ||
2462 | /* Access face attributes of face FACE, a Lisp vector. */ | |
2463 | ||
2464 | #define LFACE_FAMILY(LFACE) \ | |
2465 | XVECTOR (LFACE)->contents[LFACE_FAMILY_INDEX] | |
2466 | #define LFACE_HEIGHT(LFACE) \ | |
2467 | XVECTOR (LFACE)->contents[LFACE_HEIGHT_INDEX] | |
2468 | #define LFACE_WEIGHT(LFACE) \ | |
2469 | XVECTOR (LFACE)->contents[LFACE_WEIGHT_INDEX] | |
2470 | #define LFACE_SLANT(LFACE) \ | |
2471 | XVECTOR (LFACE)->contents[LFACE_SLANT_INDEX] | |
2472 | #define LFACE_UNDERLINE(LFACE) \ | |
2473 | XVECTOR (LFACE)->contents[LFACE_UNDERLINE_INDEX] | |
2474 | #define LFACE_INVERSE(LFACE) \ | |
2475 | XVECTOR (LFACE)->contents[LFACE_INVERSE_INDEX] | |
2476 | #define LFACE_FOREGROUND(LFACE) \ | |
2477 | XVECTOR (LFACE)->contents[LFACE_FOREGROUND_INDEX] | |
2478 | #define LFACE_BACKGROUND(LFACE) \ | |
2479 | XVECTOR (LFACE)->contents[LFACE_BACKGROUND_INDEX] | |
2480 | #define LFACE_STIPPLE(LFACE) \ | |
2481 | XVECTOR (LFACE)->contents[LFACE_STIPPLE_INDEX] | |
2482 | #define LFACE_SWIDTH(LFACE) \ | |
2483 | XVECTOR (LFACE)->contents[LFACE_SWIDTH_INDEX] | |
2484 | #define LFACE_OVERLINE(LFACE) \ | |
2485 | XVECTOR (LFACE)->contents[LFACE_OVERLINE_INDEX] | |
2486 | #define LFACE_STRIKE_THROUGH(LFACE) \ | |
2487 | XVECTOR (LFACE)->contents[LFACE_STRIKE_THROUGH_INDEX] | |
2488 | #define LFACE_BOX(LFACE) \ | |
2489 | XVECTOR (LFACE)->contents[LFACE_BOX_INDEX] | |
2490 | ||
2491 | /* Non-zero if LFACE is a Lisp face. A Lisp face is a vector of size | |
2492 | LFACE_VECTOR_SIZE which has the symbol `face' in slot 0. */ | |
2493 | ||
2494 | #define LFACEP(LFACE) \ | |
2495 | (VECTORP (LFACE) \ | |
2496 | && XVECTOR (LFACE)->size == LFACE_VECTOR_SIZE \ | |
2497 | && EQ (XVECTOR (LFACE)->contents[0], Qface)) | |
2498 | ||
2499 | ||
2500 | #if GLYPH_DEBUG | |
2501 | ||
2502 | /* Check consistency of Lisp face attribute vector ATTRS. */ | |
2503 | ||
2504 | static void | |
2505 | check_lface_attrs (attrs) | |
2506 | Lisp_Object *attrs; | |
2507 | { | |
2508 | xassert (UNSPECIFIEDP (attrs[LFACE_FAMILY_INDEX]) | |
2509 | || STRINGP (attrs[LFACE_FAMILY_INDEX])); | |
2510 | xassert (UNSPECIFIEDP (attrs[LFACE_SWIDTH_INDEX]) | |
2511 | || SYMBOLP (attrs[LFACE_SWIDTH_INDEX])); | |
2512 | xassert (UNSPECIFIEDP (attrs[LFACE_HEIGHT_INDEX]) | |
2513 | || INTEGERP (attrs[LFACE_HEIGHT_INDEX])); | |
2514 | xassert (UNSPECIFIEDP (attrs[LFACE_WEIGHT_INDEX]) | |
2515 | || SYMBOLP (attrs[LFACE_WEIGHT_INDEX])); | |
2516 | xassert (UNSPECIFIEDP (attrs[LFACE_SLANT_INDEX]) | |
2517 | || SYMBOLP (attrs[LFACE_SLANT_INDEX])); | |
2518 | xassert (UNSPECIFIEDP (attrs[LFACE_UNDERLINE_INDEX]) | |
2519 | || SYMBOLP (attrs[LFACE_UNDERLINE_INDEX]) | |
2520 | || STRINGP (attrs[LFACE_UNDERLINE_INDEX])); | |
2521 | xassert (UNSPECIFIEDP (attrs[LFACE_OVERLINE_INDEX]) | |
2522 | || SYMBOLP (attrs[LFACE_OVERLINE_INDEX]) | |
2523 | || STRINGP (attrs[LFACE_OVERLINE_INDEX])); | |
2524 | xassert (UNSPECIFIEDP (attrs[LFACE_STRIKE_THROUGH_INDEX]) | |
2525 | || SYMBOLP (attrs[LFACE_STRIKE_THROUGH_INDEX]) | |
2526 | || STRINGP (attrs[LFACE_STRIKE_THROUGH_INDEX])); | |
2527 | xassert (UNSPECIFIEDP (attrs[LFACE_BOX_INDEX]) | |
2528 | || SYMBOLP (attrs[LFACE_BOX_INDEX]) | |
2529 | || STRINGP (attrs[LFACE_BOX_INDEX]) | |
2530 | || INTEGERP (attrs[LFACE_BOX_INDEX]) | |
2531 | || CONSP (attrs[LFACE_BOX_INDEX])); | |
2532 | xassert (UNSPECIFIEDP (attrs[LFACE_INVERSE_INDEX]) | |
2533 | || SYMBOLP (attrs[LFACE_INVERSE_INDEX])); | |
2534 | xassert (UNSPECIFIEDP (attrs[LFACE_FOREGROUND_INDEX]) | |
2535 | || STRINGP (attrs[LFACE_FOREGROUND_INDEX])); | |
2536 | xassert (UNSPECIFIEDP (attrs[LFACE_BACKGROUND_INDEX]) | |
2537 | || STRINGP (attrs[LFACE_BACKGROUND_INDEX])); | |
2538 | #ifdef HAVE_WINDOW_SYSTEM | |
2539 | xassert (UNSPECIFIEDP (attrs[LFACE_STIPPLE_INDEX]) | |
2540 | || SYMBOLP (attrs[LFACE_STIPPLE_INDEX]) | |
2541 | || !NILP (Fpixmap_spec_p (attrs[LFACE_STIPPLE_INDEX]))); | |
2542 | #endif | |
2543 | } | |
2544 | ||
2545 | ||
2546 | /* Check consistency of attributes of Lisp face LFACE (a Lisp vector). */ | |
2547 | ||
2548 | static void | |
2549 | check_lface (lface) | |
2550 | Lisp_Object lface; | |
2551 | { | |
2552 | if (!NILP (lface)) | |
2553 | { | |
2554 | xassert (LFACEP (lface)); | |
2555 | check_lface_attrs (XVECTOR (lface)->contents); | |
2556 | } | |
2557 | } | |
2558 | ||
2559 | #else /* GLYPH_DEBUG == 0 */ | |
2560 | ||
2561 | #define check_lface_attrs(attrs) (void) 0 | |
2562 | #define check_lface(lface) (void) 0 | |
2563 | ||
2564 | #endif /* GLYPH_DEBUG == 0 */ | |
2565 | ||
2566 | ||
2567 | /* Return the face definition of FACE_NAME on frame F. F null means | |
2568 | return the global definition. FACE_NAME may be a string or a | |
2569 | symbol (apparently Emacs 20.2 allows strings as face names in face | |
2570 | text properties; ediff uses that). If SIGNAL_P is non-zero, signal | |
2571 | an error if FACE_NAME is not a valid face name. If SIGNAL_P is | |
2572 | zero, value is nil if FACE_NAME is not a valid face name. */ | |
2573 | ||
2574 | static INLINE Lisp_Object | |
2575 | lface_from_face_name (f, face_name, signal_p) | |
2576 | struct frame *f; | |
2577 | Lisp_Object face_name; | |
2578 | int signal_p; | |
2579 | { | |
2580 | Lisp_Object lface; | |
2581 | ||
2582 | if (STRINGP (face_name)) | |
2583 | face_name = intern (XSTRING (face_name)->data); | |
2584 | ||
2585 | if (f) | |
2586 | lface = assq_no_quit (face_name, f->face_alist); | |
2587 | else | |
2588 | lface = assq_no_quit (face_name, Vface_new_frame_defaults); | |
2589 | ||
2590 | if (CONSP (lface)) | |
2591 | lface = XCDR (lface); | |
2592 | else if (signal_p) | |
2593 | signal_error ("Invalid face", face_name); | |
2594 | ||
2595 | check_lface (lface); | |
2596 | return lface; | |
2597 | } | |
2598 | ||
2599 | ||
2600 | /* Get face attributes of face FACE_NAME from frame-local faces on | |
2601 | frame F. Store the resulting attributes in ATTRS which must point | |
2602 | to a vector of Lisp_Objects of size LFACE_VECTOR_SIZE. If SIGNAL_P | |
2603 | is non-zero, signal an error if FACE_NAME does not name a face. | |
2604 | Otherwise, value is zero if FACE_NAME is not a face. */ | |
2605 | ||
2606 | static INLINE int | |
2607 | get_lface_attributes (f, face_name, attrs, signal_p) | |
2608 | struct frame *f; | |
2609 | Lisp_Object face_name; | |
2610 | Lisp_Object *attrs; | |
2611 | int signal_p; | |
2612 | { | |
2613 | Lisp_Object lface; | |
2614 | int success_p; | |
2615 | ||
2616 | lface = lface_from_face_name (f, face_name, signal_p); | |
2617 | if (!NILP (lface)) | |
2618 | { | |
2619 | bcopy (XVECTOR (lface)->contents, attrs, | |
2620 | LFACE_VECTOR_SIZE * sizeof *attrs); | |
2621 | success_p = 1; | |
2622 | } | |
2623 | else | |
2624 | success_p = 0; | |
2625 | ||
2626 | return success_p; | |
2627 | } | |
2628 | ||
2629 | ||
2630 | /* Non-zero if all attributes in face attribute vector ATTRS are | |
2631 | specified, i.e. are non-nil. */ | |
2632 | ||
2633 | static int | |
2634 | lface_fully_specified_p (attrs) | |
2635 | Lisp_Object *attrs; | |
2636 | { | |
2637 | int i; | |
2638 | ||
2639 | for (i = 1; i < LFACE_VECTOR_SIZE; ++i) | |
2640 | if (UNSPECIFIEDP (attrs[i])) | |
2641 | break; | |
2642 | ||
2643 | return i == LFACE_VECTOR_SIZE; | |
2644 | } | |
2645 | ||
2646 | ||
2647 | #ifdef HAVE_X_WINDOWS | |
2648 | ||
2649 | /* Set font-related attributes of Lisp face LFACE from XLFD font name | |
2650 | FONT_NAME. If FORCE_P is zero, set only unspecified attributes of | |
2651 | LFACE. Ignore fields of FONT_NAME containing wildcards. Value is | |
2652 | zero if not successful because FONT_NAME was not in a valid format. | |
2653 | A valid format is one that is suitable for split_font_name, see the | |
2654 | comment there. */ | |
2655 | ||
2656 | static int | |
2657 | set_lface_from_font_name (f, lface, font_name, force_p) | |
2658 | struct frame *f; | |
2659 | Lisp_Object lface; | |
2660 | char *font_name; | |
2661 | int force_p; | |
2662 | { | |
2663 | struct font_name font; | |
2664 | char *buffer; | |
2665 | int pt; | |
2666 | int free_font_name_p = 0; | |
2667 | ||
2668 | /* If FONT_NAME contains wildcards, use the first matching font. */ | |
2669 | if (index (font_name, '*') || index (font_name, '?')) | |
2670 | { | |
2671 | if (!first_font_matching (f, font_name, &font)) | |
2672 | return 0; | |
2673 | free_font_name_p = 1; | |
2674 | } | |
2675 | else | |
2676 | { | |
2677 | font.name = STRDUPA (font_name); | |
2678 | if (!split_font_name (f, &font, 1)) | |
2679 | { | |
2680 | /* The font name may be something like `6x13'. Make | |
2681 | sure we use the full name. */ | |
2682 | struct font_info *font_info; | |
2683 | ||
2684 | BLOCK_INPUT; | |
2685 | font_info = fs_load_font (f, FRAME_X_FONT_TABLE (f), | |
2686 | CHARSET_ASCII, font_name, -1); | |
2687 | UNBLOCK_INPUT; | |
2688 | ||
2689 | if (!font_info) | |
2690 | return 0; | |
2691 | ||
2692 | font.name = STRDUPA (font_info->full_name); | |
2693 | split_font_name (f, &font, 1); | |
2694 | } | |
2695 | ||
2696 | /* FONT_NAME should not be a fontset name, here. */ | |
2697 | xassert (xstricmp (font.fields[XLFD_REGISTRY], "fontset") != 0); | |
2698 | } | |
2699 | ||
2700 | /* Set attributes only if unspecified, otherwise face defaults for | |
2701 | new frames would never take effect. */ | |
2702 | ||
2703 | if (force_p || UNSPECIFIEDP (LFACE_FAMILY (lface))) | |
2704 | { | |
2705 | buffer = (char *) alloca (strlen (font.fields[XLFD_FAMILY]) | |
2706 | + strlen (font.fields[XLFD_FOUNDRY]) | |
2707 | + 2); | |
2708 | sprintf (buffer, "%s-%s", font.fields[XLFD_FOUNDRY], | |
2709 | font.fields[XLFD_FAMILY]); | |
2710 | LFACE_FAMILY (lface) = build_string (buffer); | |
2711 | } | |
2712 | ||
2713 | if (force_p || UNSPECIFIEDP (LFACE_HEIGHT (lface))) | |
2714 | { | |
2715 | pt = xlfd_point_size (f, &font); | |
2716 | xassert (pt > 0); | |
2717 | LFACE_HEIGHT (lface) = make_number (pt); | |
2718 | } | |
2719 | ||
2720 | if (force_p || UNSPECIFIEDP (LFACE_SWIDTH (lface))) | |
2721 | LFACE_SWIDTH (lface) = xlfd_symbolic_swidth (&font); | |
2722 | ||
2723 | if (force_p || UNSPECIFIEDP (LFACE_WEIGHT (lface))) | |
2724 | LFACE_WEIGHT (lface) = xlfd_symbolic_weight (&font); | |
2725 | ||
2726 | if (force_p || UNSPECIFIEDP (LFACE_SLANT (lface))) | |
2727 | LFACE_SLANT (lface) = xlfd_symbolic_slant (&font); | |
2728 | ||
2729 | if (free_font_name_p) | |
2730 | xfree (font.name); | |
2731 | ||
2732 | return 1; | |
2733 | } | |
2734 | ||
2735 | #endif /* HAVE_X_WINDOWS */ | |
2736 | ||
2737 | ||
2738 | /* Merge two Lisp face attribute vectors FROM and TO and store the | |
2739 | resulting attributes in TO. Every non-nil attribute of FROM | |
2740 | overrides the corresponding attribute of TO. */ | |
2741 | ||
2742 | static INLINE void | |
2743 | merge_face_vectors (from, to) | |
2744 | Lisp_Object *from, *to; | |
2745 | { | |
2746 | int i; | |
2747 | for (i = 1; i < LFACE_VECTOR_SIZE; ++i) | |
2748 | if (!UNSPECIFIEDP (from[i])) | |
2749 | to[i] = from[i]; | |
2750 | } | |
2751 | ||
2752 | ||
2753 | /* Given a Lisp face attribute vector TO and a Lisp object PROP that | |
2754 | is a face property, determine the resulting face attributes on | |
2755 | frame F, and store them in TO. PROP may be a single face | |
2756 | specification or a list of such specifications. Each face | |
2757 | specification can be | |
2758 | ||
2759 | 1. A symbol or string naming a Lisp face. | |
2760 | ||
2761 | 2. A property list of the form (KEYWORD VALUE ...) where each | |
2762 | KEYWORD is a face attribute name, and value is an appropriate value | |
2763 | for that attribute. | |
2764 | ||
2765 | 3. Conses or the form (FOREGROUND-COLOR . COLOR) or | |
2766 | (BACKGROUND-COLOR . COLOR) where COLOR is a color name. This is | |
2767 | for compatibility with 20.2. | |
2768 | ||
2769 | Face specifications earlier in lists take precedence over later | |
2770 | specifications. */ | |
2771 | ||
2772 | static void | |
2773 | merge_face_vector_with_property (f, to, prop) | |
2774 | struct frame *f; | |
2775 | Lisp_Object *to; | |
2776 | Lisp_Object prop; | |
2777 | { | |
2778 | if (CONSP (prop)) | |
2779 | { | |
2780 | Lisp_Object first = XCAR (prop); | |
2781 | ||
2782 | if (EQ (first, Qforeground_color) | |
2783 | || EQ (first, Qbackground_color)) | |
2784 | { | |
2785 | /* One of (FOREGROUND-COLOR . COLOR) or (BACKGROUND-COLOR | |
2786 | . COLOR). COLOR must be a string. */ | |
2787 | Lisp_Object color_name = XCDR (prop); | |
2788 | Lisp_Object color = first; | |
2789 | ||
2790 | if (STRINGP (color_name)) | |
2791 | { | |
2792 | if (EQ (color, Qforeground_color)) | |
2793 | to[LFACE_FOREGROUND_INDEX] = color_name; | |
2794 | else | |
2795 | to[LFACE_BACKGROUND_INDEX] = color_name; | |
2796 | } | |
2797 | else | |
2798 | display_message (f, "Invalid face color", color_name, Qnil); | |
2799 | } | |
2800 | else if (SYMBOLP (first) | |
2801 | && *XSYMBOL (first)->name->data == ':') | |
2802 | { | |
2803 | /* Assume this is the property list form. */ | |
2804 | while (CONSP (prop) && CONSP (XCDR (prop))) | |
2805 | { | |
2806 | Lisp_Object keyword = XCAR (prop); | |
2807 | Lisp_Object value = XCAR (XCDR (prop)); | |
2808 | ||
2809 | if (EQ (keyword, QCfamily)) | |
2810 | { | |
2811 | if (STRINGP (value)) | |
2812 | to[LFACE_FAMILY_INDEX] = value; | |
2813 | else | |
2814 | display_message (f, "Illegal face font family", | |
2815 | value, Qnil); | |
2816 | } | |
2817 | else if (EQ (keyword, QCheight)) | |
2818 | { | |
2819 | if (INTEGERP (value)) | |
2820 | to[LFACE_HEIGHT_INDEX] = value; | |
2821 | else | |
2822 | display_message (f, "Illegal face font height", | |
2823 | value, Qnil); | |
2824 | } | |
2825 | else if (EQ (keyword, QCweight)) | |
2826 | { | |
2827 | if (SYMBOLP (value) | |
2828 | && face_numeric_weight (value) >= 0) | |
2829 | to[LFACE_WEIGHT_INDEX] = value; | |
2830 | else | |
2831 | display_message (f, "Illegal face weight", value, Qnil); | |
2832 | } | |
2833 | else if (EQ (keyword, QCslant)) | |
2834 | { | |
2835 | if (SYMBOLP (value) | |
2836 | && face_numeric_slant (value) >= 0) | |
2837 | to[LFACE_SLANT_INDEX] = value; | |
2838 | else | |
2839 | display_message (f, "Illegal face slant", value, Qnil); | |
2840 | } | |
2841 | else if (EQ (keyword, QCunderline)) | |
2842 | { | |
2843 | if (EQ (value, Qt) | |
2844 | || NILP (value) | |
2845 | || STRINGP (value)) | |
2846 | to[LFACE_UNDERLINE_INDEX] = value; | |
2847 | else | |
2848 | display_message (f, "Illegal face underline", value, Qnil); | |
2849 | } | |
2850 | else if (EQ (keyword, QCoverline)) | |
2851 | { | |
2852 | if (EQ (value, Qt) | |
2853 | || NILP (value) | |
2854 | || STRINGP (value)) | |
2855 | to[LFACE_OVERLINE_INDEX] = value; | |
2856 | else | |
2857 | display_message (f, "Illegal face overline", value, Qnil); | |
2858 | } | |
2859 | else if (EQ (keyword, QCstrike_through)) | |
2860 | { | |
2861 | if (EQ (value, Qt) | |
2862 | || NILP (value) | |
2863 | || STRINGP (value)) | |
2864 | to[LFACE_STRIKE_THROUGH_INDEX] = value; | |
2865 | else | |
2866 | display_message (f, "Illegal face strike-through", | |
2867 | value, Qnil); | |
2868 | } | |
2869 | else if (EQ (keyword, QCbox)) | |
2870 | { | |
2871 | if (EQ (value, Qt)) | |
2872 | value = make_number (1); | |
2873 | if (INTEGERP (value) | |
2874 | || STRINGP (value) | |
2875 | || CONSP (value) | |
2876 | || NILP (value)) | |
2877 | to[LFACE_BOX_INDEX] = value; | |
2878 | else | |
2879 | display_message (f, "Illegal face box", value, Qnil); | |
2880 | } | |
2881 | else if (EQ (keyword, QCinverse_video) | |
2882 | || EQ (keyword, QCreverse_video)) | |
2883 | { | |
2884 | if (EQ (value, Qt) || NILP (value)) | |
2885 | to[LFACE_INVERSE_INDEX] = value; | |
2886 | else | |
2887 | display_message (f, "Illegal face inverse-video", | |
2888 | value, Qnil); | |
2889 | } | |
2890 | else if (EQ (keyword, QCforeground)) | |
2891 | { | |
2892 | if (STRINGP (value)) | |
2893 | to[LFACE_FOREGROUND_INDEX] = value; | |
2894 | else | |
2895 | display_message (f, "Illegal face foreground", | |
2896 | value, Qnil); | |
2897 | } | |
2898 | else if (EQ (keyword, QCbackground)) | |
2899 | { | |
2900 | if (STRINGP (value)) | |
2901 | to[LFACE_BACKGROUND_INDEX] = value; | |
2902 | else | |
2903 | display_message (f, "Illegal face background", | |
2904 | value, Qnil); | |
2905 | } | |
2906 | else if (EQ (keyword, QCstipple)) | |
2907 | { | |
2908 | #ifdef HAVE_X_WINDOWS | |
2909 | Lisp_Object pixmap_p = Fpixmap_spec_p (value); | |
2910 | if (!NILP (pixmap_p)) | |
2911 | to[LFACE_STIPPLE_INDEX] = value; | |
2912 | else | |
2913 | display_message (f, "Illegal face stipple", value, Qnil); | |
2914 | #endif | |
2915 | } | |
2916 | else if (EQ (keyword, QCwidth)) | |
2917 | { | |
2918 | if (SYMBOLP (value) | |
2919 | && face_numeric_swidth (value) >= 0) | |
2920 | to[LFACE_SWIDTH_INDEX] = value; | |
2921 | else | |
2922 | display_message (f, "Illegal face width", value, Qnil); | |
2923 | } | |
2924 | else | |
2925 | display_message (f, "Invalid attribute %s in face property", | |
2926 | keyword, Qnil); | |
2927 | ||
2928 | prop = XCDR (XCDR (prop)); | |
2929 | } | |
2930 | } | |
2931 | else | |
2932 | { | |
2933 | /* This is a list of face specs. Specifications at the | |
2934 | beginning of the list take precedence over later | |
2935 | specifications, so we have to merge starting with the | |
2936 | last specification. */ | |
2937 | Lisp_Object next = XCDR (prop); | |
2938 | if (!NILP (next)) | |
2939 | merge_face_vector_with_property (f, to, next); | |
2940 | merge_face_vector_with_property (f, to, first); | |
2941 | } | |
2942 | } | |
2943 | else | |
2944 | { | |
2945 | /* PROP ought to be a face name. */ | |
2946 | Lisp_Object lface = lface_from_face_name (f, prop, 0); | |
2947 | if (NILP (lface)) | |
2948 | display_message (f, "Invalid face text property value: %s", | |
2949 | prop, Qnil); | |
2950 | else | |
2951 | merge_face_vectors (XVECTOR (lface)->contents, to); | |
2952 | } | |
2953 | } | |
2954 | ||
2955 | ||
2956 | DEFUN ("internal-make-lisp-face", Finternal_make_lisp_face, | |
2957 | Sinternal_make_lisp_face, 1, 2, 0, | |
2958 | "Make FACE, a symbol, a Lisp face with all attributes nil.\n\ | |
2959 | If FACE was not known as a face before, create a new one.\n\ | |
2960 | If optional argument FRAME is specified, make a frame-local face\n\ | |
2961 | for that frame. Otherwise operate on the global face definition.\n\ | |
2962 | Value is a vector of face attributes.") | |
2963 | (face, frame) | |
2964 | Lisp_Object face, frame; | |
2965 | { | |
2966 | Lisp_Object global_lface, lface; | |
2967 | struct frame *f; | |
2968 | int i; | |
2969 | ||
2970 | CHECK_SYMBOL (face, 0); | |
2971 | global_lface = lface_from_face_name (NULL, face, 0); | |
2972 | ||
2973 | if (!NILP (frame)) | |
2974 | { | |
2975 | CHECK_LIVE_FRAME (frame, 1); | |
2976 | f = XFRAME (frame); | |
2977 | lface = lface_from_face_name (f, face, 0); | |
2978 | } | |
2979 | else | |
2980 | f = NULL, lface = Qnil; | |
2981 | ||
2982 | /* Add a global definition if there is none. */ | |
2983 | if (NILP (global_lface)) | |
2984 | { | |
2985 | global_lface = Fmake_vector (make_number (LFACE_VECTOR_SIZE), | |
2986 | Qunspecified); | |
2987 | XVECTOR (global_lface)->contents[0] = Qface; | |
2988 | Vface_new_frame_defaults = Fcons (Fcons (face, global_lface), | |
2989 | Vface_new_frame_defaults); | |
2990 | ||
2991 | /* Assign the new Lisp face a unique ID. The mapping from Lisp | |
2992 | face id to Lisp face is given by the vector lface_id_to_name. | |
2993 | The mapping from Lisp face to Lisp face id is given by the | |
2994 | property `face' of the Lisp face name. */ | |
2995 | if (next_lface_id == lface_id_to_name_size) | |
2996 | { | |
2997 | int new_size = max (50, 2 * lface_id_to_name_size); | |
2998 | int sz = new_size * sizeof *lface_id_to_name; | |
2999 | lface_id_to_name = (Lisp_Object *) xrealloc (lface_id_to_name, sz); | |
3000 | lface_id_to_name_size = new_size; | |
3001 | } | |
3002 | ||
3003 | lface_id_to_name[next_lface_id] = face; | |
3004 | Fput (face, Qface, make_number (next_lface_id)); | |
3005 | ++next_lface_id; | |
3006 | } | |
3007 | else if (f == NULL) | |
3008 | for (i = 1; i < LFACE_VECTOR_SIZE; ++i) | |
3009 | XVECTOR (global_lface)->contents[i] = Qunspecified; | |
3010 | ||
3011 | /* Add a frame-local definition. */ | |
3012 | if (f) | |
3013 | { | |
3014 | if (NILP (lface)) | |
3015 | { | |
3016 | lface = Fmake_vector (make_number (LFACE_VECTOR_SIZE), | |
3017 | Qunspecified); | |
3018 | XVECTOR (lface)->contents[0] = Qface; | |
3019 | f->face_alist = Fcons (Fcons (face, lface), f->face_alist); | |
3020 | } | |
3021 | else | |
3022 | for (i = 1; i < LFACE_VECTOR_SIZE; ++i) | |
3023 | XVECTOR (lface)->contents[i] = Qunspecified; | |
3024 | } | |
3025 | else | |
3026 | lface = global_lface; | |
3027 | ||
3028 | xassert (LFACEP (lface)); | |
3029 | check_lface (lface); | |
3030 | return lface; | |
3031 | } | |
3032 | ||
3033 | ||
3034 | DEFUN ("internal-lisp-face-p", Finternal_lisp_face_p, | |
3035 | Sinternal_lisp_face_p, 1, 2, 0, | |
3036 | "Return non-nil if FACE names a face.\n\ | |
3037 | If optional second parameter FRAME is non-nil, check for the\n\ | |
3038 | existence of a frame-local face with name FACE on that frame.\n\ | |
3039 | Otherwise check for the existence of a global face.") | |
3040 | (face, frame) | |
3041 | Lisp_Object face, frame; | |
3042 | { | |
3043 | Lisp_Object lface; | |
3044 | ||
3045 | if (!NILP (frame)) | |
3046 | { | |
3047 | CHECK_LIVE_FRAME (frame, 1); | |
3048 | lface = lface_from_face_name (XFRAME (frame), face, 0); | |
3049 | } | |
3050 | else | |
3051 | lface = lface_from_face_name (NULL, face, 0); | |
3052 | ||
3053 | return lface; | |
3054 | } | |
3055 | ||
3056 | ||
3057 | DEFUN ("internal-copy-lisp-face", Finternal_copy_lisp_face, | |
3058 | Sinternal_copy_lisp_face, 4, 4, 0, | |
3059 | "Copy face FROM to TO.\n\ | |
3060 | If FRAME it t, copy the global face definition of FROM to the\n\ | |
3061 | global face definition of TO. Otherwise, copy the frame-local\n\ | |
3062 | definition of FROM on FRAME to the frame-local definition of TO\n\ | |
3063 | on NEW-FRAME, or FRAME if NEW-FRAME is nil.\n\ | |
3064 | \n\ | |
3065 | Value is TO.") | |
3066 | (from, to, frame, new_frame) | |
3067 | Lisp_Object from, to, frame, new_frame; | |
3068 | { | |
3069 | Lisp_Object lface, copy; | |
3070 | ||
3071 | CHECK_SYMBOL (from, 0); | |
3072 | CHECK_SYMBOL (to, 1); | |
3073 | if (NILP (new_frame)) | |
3074 | new_frame = frame; | |
3075 | ||
3076 | if (EQ (frame, Qt)) | |
3077 | { | |
3078 | /* Copy global definition of FROM. We don't make copies of | |
3079 | strings etc. because 20.2 didn't do it either. */ | |
3080 | lface = lface_from_face_name (NULL, from, 1); | |
3081 | copy = Finternal_make_lisp_face (to, Qnil); | |
3082 | } | |
3083 | else | |
3084 | { | |
3085 | /* Copy frame-local definition of FROM. */ | |
3086 | CHECK_LIVE_FRAME (frame, 2); | |
3087 | CHECK_LIVE_FRAME (new_frame, 3); | |
3088 | lface = lface_from_face_name (XFRAME (frame), from, 1); | |
3089 | copy = Finternal_make_lisp_face (to, new_frame); | |
3090 | } | |
3091 | ||
3092 | bcopy (XVECTOR (lface)->contents, XVECTOR (copy)->contents, | |
3093 | LFACE_VECTOR_SIZE * sizeof (Lisp_Object)); | |
3094 | ||
3095 | return to; | |
3096 | } | |
3097 | ||
3098 | ||
3099 | DEFUN ("internal-set-lisp-face-attribute", Finternal_set_lisp_face_attribute, | |
3100 | Sinternal_set_lisp_face_attribute, 3, 4, 0, | |
3101 | "Set attribute ATTR of FACE to VALUE.\n\ | |
3102 | If optional argument FRAME is given, set the face attribute of face FACE\n\ | |
3103 | on that frame. If FRAME is t, set the attribute of the default for face\n\ | |
3104 | FACE (for new frames). If FRAME is omitted or nil, use the selected\n\ | |
3105 | frame.") | |
3106 | (face, attr, value, frame) | |
3107 | Lisp_Object face, attr, value, frame; | |
3108 | { | |
3109 | Lisp_Object lface; | |
3110 | Lisp_Object old_value = Qnil; | |
3111 | int font_related_attr_p = 0; | |
3112 | ||
3113 | CHECK_SYMBOL (face, 0); | |
3114 | CHECK_SYMBOL (attr, 1); | |
3115 | ||
3116 | /* Set lface to the Lisp attribute vector of FACE. */ | |
3117 | if (EQ (frame, Qt)) | |
3118 | lface = lface_from_face_name (NULL, face, 1); | |
3119 | else | |
3120 | { | |
3121 | if (NILP (frame)) | |
3122 | XSETFRAME (frame, selected_frame); | |
3123 | ||
3124 | CHECK_LIVE_FRAME (frame, 3); | |
3125 | lface = lface_from_face_name (XFRAME (frame), face, 0); | |
3126 | ||
3127 | /* If a frame-local face doesn't exist yet, create one. */ | |
3128 | if (NILP (lface)) | |
3129 | lface = Finternal_make_lisp_face (face, frame); | |
3130 | } | |
3131 | ||
3132 | if (EQ (attr, QCfamily)) | |
3133 | { | |
3134 | if (!UNSPECIFIEDP (value)) | |
3135 | { | |
3136 | CHECK_STRING (value, 3); | |
3137 | if (XSTRING (value)->size == 0) | |
3138 | signal_error ("Invalid face family", value); | |
3139 | } | |
3140 | old_value = LFACE_FAMILY (lface); | |
3141 | LFACE_FAMILY (lface) = value; | |
3142 | font_related_attr_p = 1; | |
3143 | } | |
3144 | else if (EQ (attr, QCheight)) | |
3145 | { | |
3146 | if (!UNSPECIFIEDP (value)) | |
3147 | { | |
3148 | CHECK_NUMBER (value, 3); | |
3149 | if (XINT (value) <= 0) | |
3150 | signal_error ("Invalid face height", value); | |
3151 | } | |
3152 | old_value = LFACE_HEIGHT (lface); | |
3153 | LFACE_HEIGHT (lface) = value; | |
3154 | font_related_attr_p = 1; | |
3155 | } | |
3156 | else if (EQ (attr, QCweight)) | |
3157 | { | |
3158 | if (!UNSPECIFIEDP (value)) | |
3159 | { | |
3160 | CHECK_SYMBOL (value, 3); | |
3161 | if (face_numeric_weight (value) < 0) | |
3162 | signal_error ("Invalid face weight", value); | |
3163 | } | |
3164 | old_value = LFACE_WEIGHT (lface); | |
3165 | LFACE_WEIGHT (lface) = value; | |
3166 | font_related_attr_p = 1; | |
3167 | } | |
3168 | else if (EQ (attr, QCslant)) | |
3169 | { | |
3170 | if (!UNSPECIFIEDP (value)) | |
3171 | { | |
3172 | CHECK_SYMBOL (value, 3); | |
3173 | if (face_numeric_slant (value) < 0) | |
3174 | signal_error ("Invalid face slant", value); | |
3175 | } | |
3176 | old_value = LFACE_SLANT (lface); | |
3177 | LFACE_SLANT (lface) = value; | |
3178 | font_related_attr_p = 1; | |
3179 | } | |
3180 | else if (EQ (attr, QCunderline)) | |
3181 | { | |
3182 | if (!UNSPECIFIEDP (value)) | |
3183 | if ((SYMBOLP (value) | |
3184 | && !EQ (value, Qt) | |
3185 | && !EQ (value, Qnil)) | |
3186 | /* Underline color. */ | |
3187 | || (STRINGP (value) | |
3188 | && XSTRING (value)->size == 0)) | |
3189 | signal_error ("Invalid face underline", value); | |
3190 | ||
3191 | old_value = LFACE_UNDERLINE (lface); | |
3192 | LFACE_UNDERLINE (lface) = value; | |
3193 | } | |
3194 | else if (EQ (attr, QCoverline)) | |
3195 | { | |
3196 | if (!UNSPECIFIEDP (value)) | |
3197 | if ((SYMBOLP (value) | |
3198 | && !EQ (value, Qt) | |
3199 | && !EQ (value, Qnil)) | |
3200 | /* Overline color. */ | |
3201 | || (STRINGP (value) | |
3202 | && XSTRING (value)->size == 0)) | |
3203 | signal_error ("Invalid face overline", value); | |
3204 | ||
3205 | old_value = LFACE_OVERLINE (lface); | |
3206 | LFACE_OVERLINE (lface) = value; | |
3207 | } | |
3208 | else if (EQ (attr, QCstrike_through)) | |
3209 | { | |
3210 | if (!UNSPECIFIEDP (value)) | |
3211 | if ((SYMBOLP (value) | |
3212 | && !EQ (value, Qt) | |
3213 | && !EQ (value, Qnil)) | |
3214 | /* Strike-through color. */ | |
3215 | || (STRINGP (value) | |
3216 | && XSTRING (value)->size == 0)) | |
3217 | signal_error ("Invalid face strike-through", value); | |
3218 | ||
3219 | old_value = LFACE_STRIKE_THROUGH (lface); | |
3220 | LFACE_STRIKE_THROUGH (lface) = value; | |
3221 | } | |
3222 | else if (EQ (attr, QCbox)) | |
3223 | { | |
3224 | int valid_p; | |
3225 | ||
3226 | /* Allow t meaning a simple box of width 1 in foreground color | |
3227 | of the face. */ | |
3228 | if (EQ (value, Qt)) | |
3229 | value = make_number (1); | |
3230 | ||
3231 | if (UNSPECIFIEDP (value)) | |
3232 | valid_p = 1; | |
3233 | else if (NILP (value)) | |
3234 | valid_p = 1; | |
3235 | else if (INTEGERP (value)) | |
3236 | valid_p = XINT (value) > 0; | |
3237 | else if (STRINGP (value)) | |
3238 | valid_p = XSTRING (value)->size > 0; | |
3239 | else if (CONSP (value)) | |
3240 | { | |
3241 | Lisp_Object tem; | |
3242 | ||
3243 | tem = value; | |
3244 | while (CONSP (tem)) | |
3245 | { | |
3246 | Lisp_Object k, v; | |
3247 | ||
3248 | k = XCAR (tem); | |
3249 | tem = XCDR (tem); | |
3250 | if (!CONSP (tem)) | |
3251 | break; | |
3252 | v = XCAR (tem); | |
3253 | tem = XCDR (tem); | |
3254 | ||
3255 | if (EQ (k, QCline_width)) | |
3256 | { | |
3257 | if (!INTEGERP (v) || XINT (v) <= 0) | |
3258 | break; | |
3259 | } | |
3260 | else if (EQ (k, QCcolor)) | |
3261 | { | |
3262 | if (!STRINGP (v) || XSTRING (v)->size == 0) | |
3263 | break; | |
3264 | } | |
3265 | else if (EQ (k, QCstyle)) | |
3266 | { | |
3267 | if (!EQ (v, Qpressed_button) && !EQ (v, Qreleased_button)) | |
3268 | break; | |
3269 | } | |
3270 | else | |
3271 | break; | |
3272 | } | |
3273 | ||
3274 | valid_p = NILP (tem); | |
3275 | } | |
3276 | else | |
3277 | valid_p = 0; | |
3278 | ||
3279 | if (!valid_p) | |
3280 | signal_error ("Invalid face box", value); | |
3281 | ||
3282 | old_value = LFACE_BOX (lface); | |
3283 | LFACE_BOX (lface) = value; | |
3284 | } | |
3285 | else if (EQ (attr, QCinverse_video) | |
3286 | || EQ (attr, QCreverse_video)) | |
3287 | { | |
3288 | if (!UNSPECIFIEDP (value)) | |
3289 | { | |
3290 | CHECK_SYMBOL (value, 3); | |
3291 | if (!EQ (value, Qt) && !NILP (value)) | |
3292 | signal_error ("Invalid inverse-video face attribute value", value); | |
3293 | } | |
3294 | old_value = LFACE_INVERSE (lface); | |
3295 | LFACE_INVERSE (lface) = value; | |
3296 | } | |
3297 | else if (EQ (attr, QCforeground)) | |
3298 | { | |
3299 | if (!UNSPECIFIEDP (value)) | |
3300 | { | |
3301 | /* Don't check for valid color names here because it depends | |
3302 | on the frame (display) whether the color will be valid | |
3303 | when the face is realized. */ | |
3304 | CHECK_STRING (value, 3); | |
3305 | if (XSTRING (value)->size == 0) | |
3306 | signal_error ("Empty foreground color value", value); | |
3307 | } | |
3308 | old_value = LFACE_FOREGROUND (lface); | |
3309 | LFACE_FOREGROUND (lface) = value; | |
3310 | } | |
3311 | else if (EQ (attr, QCbackground)) | |
3312 | { | |
3313 | if (!UNSPECIFIEDP (value)) | |
3314 | { | |
3315 | /* Don't check for valid color names here because it depends | |
3316 | on the frame (display) whether the color will be valid | |
3317 | when the face is realized. */ | |
3318 | CHECK_STRING (value, 3); | |
3319 | if (XSTRING (value)->size == 0) | |
3320 | signal_error ("Empty background color value", value); | |
3321 | } | |
3322 | old_value = LFACE_BACKGROUND (lface); | |
3323 | LFACE_BACKGROUND (lface) = value; | |
3324 | } | |
3325 | else if (EQ (attr, QCstipple)) | |
3326 | { | |
3327 | #ifdef HAVE_X_WINDOWS | |
3328 | if (!UNSPECIFIEDP (value) | |
3329 | && !NILP (value) | |
3330 | && NILP (Fpixmap_spec_p (value))) | |
3331 | signal_error ("Invalid stipple attribute", value); | |
3332 | old_value = LFACE_STIPPLE (lface); | |
3333 | LFACE_STIPPLE (lface) = value; | |
3334 | #endif /* HAVE_X_WINDOWS */ | |
3335 | } | |
3336 | else if (EQ (attr, QCwidth)) | |
3337 | { | |
3338 | if (!UNSPECIFIEDP (value)) | |
3339 | { | |
3340 | CHECK_SYMBOL (value, 3); | |
3341 | if (face_numeric_swidth (value) < 0) | |
3342 | signal_error ("Invalid face width", value); | |
3343 | } | |
3344 | old_value = LFACE_SWIDTH (lface); | |
3345 | LFACE_SWIDTH (lface) = value; | |
3346 | font_related_attr_p = 1; | |
3347 | } | |
3348 | else if (EQ (attr, QCfont)) | |
3349 | { | |
3350 | #ifdef HAVE_X_WINDOWS | |
3351 | /* Set font-related attributes of the Lisp face from an | |
3352 | XLFD font name. */ | |
3353 | struct frame *f; | |
3354 | ||
3355 | CHECK_STRING (value, 3); | |
3356 | if (EQ (frame, Qt)) | |
3357 | f = selected_frame; | |
3358 | else | |
3359 | f = check_x_frame (frame); | |
3360 | ||
3361 | if (!set_lface_from_font_name (f, lface, XSTRING (value)->data, 1)) | |
3362 | signal_error ("Invalid font name", value); | |
3363 | ||
3364 | font_related_attr_p = 1; | |
3365 | #endif /* HAVE_X_WINDOWS */ | |
3366 | } | |
3367 | else if (EQ (attr, QCbold)) | |
3368 | { | |
3369 | old_value = LFACE_WEIGHT (lface); | |
3370 | LFACE_WEIGHT (lface) = NILP (value) ? Qnormal : Qbold; | |
3371 | font_related_attr_p = 1; | |
3372 | } | |
3373 | else if (EQ (attr, QCitalic)) | |
3374 | { | |
3375 | old_value = LFACE_SLANT (lface); | |
3376 | LFACE_SLANT (lface) = NILP (value) ? Qnormal : Qitalic; | |
3377 | font_related_attr_p = 1; | |
3378 | } | |
3379 | else | |
3380 | signal_error ("Invalid face attribute name", attr); | |
3381 | ||
3382 | /* Changing a named face means that all realized faces depending on | |
3383 | that face are invalid. Since we cannot tell which realized faces | |
3384 | depend on the face, make sure they are all removed. This is done | |
3385 | by incrementing face_change_count. The next call to | |
3386 | init_iterator will then free realized faces. */ | |
3387 | if (!EQ (frame, Qt) | |
3388 | && (EQ (attr, QCfont) | |
3389 | || NILP (Fequal (old_value, value)))) | |
3390 | { | |
3391 | ++face_change_count; | |
3392 | ++windows_or_buffers_changed; | |
3393 | } | |
3394 | ||
3395 | #ifdef HAVE_X_WINDOWS | |
3396 | /* Changed font-related attributes of the `default' face are | |
3397 | reflected in changed `font' frame parameters. */ | |
3398 | if (EQ (face, Qdefault) | |
3399 | && !EQ (frame, Qt) | |
3400 | && font_related_attr_p | |
3401 | && lface_fully_specified_p (XVECTOR (lface)->contents) | |
3402 | && NILP (Fequal (old_value, value))) | |
3403 | set_font_frame_param (frame, lface); | |
3404 | ||
3405 | #endif /* HAVE_X_WINDOWS */ | |
3406 | ||
3407 | return face; | |
3408 | } | |
3409 | ||
3410 | ||
3411 | #ifdef HAVE_X_WINDOWS | |
3412 | ||
3413 | /* Set the `font' frame parameter of FRAME according to `default' face | |
3414 | attributes LFACE. */ | |
3415 | ||
3416 | static void | |
3417 | set_font_frame_param (frame, lface) | |
3418 | Lisp_Object frame, lface; | |
3419 | { | |
3420 | struct frame *f = XFRAME (frame); | |
3421 | Lisp_Object frame_font; | |
3422 | int fontset; | |
3423 | char *font; | |
3424 | ||
3425 | /* Get FRAME's font parameter. */ | |
3426 | frame_font = Fassq (Qfont, f->param_alist); | |
3427 | xassert (CONSP (frame_font) && STRINGP (XCDR (frame_font))); | |
3428 | frame_font = XCDR (frame_font); | |
3429 | ||
3430 | fontset = fs_query_fontset (f, XSTRING (frame_font)->data); | |
3431 | if (fontset >= 0) | |
3432 | { | |
3433 | /* Frame parameter is a fontset name. Modify the fontset so | |
3434 | that all its fonts reflect face attributes LFACE. */ | |
3435 | int charset; | |
3436 | struct fontset_info *fontset_info; | |
3437 | ||
3438 | fontset_info = FRAME_FONTSET_DATA (f)->fontset_table[fontset]; | |
3439 | ||
3440 | for (charset = 0; charset < MAX_CHARSET; ++charset) | |
3441 | if (fontset_info->fontname[charset]) | |
3442 | { | |
3443 | font = choose_face_fontset_font (f, XVECTOR (lface)->contents, | |
3444 | fontset, charset); | |
3445 | Fset_fontset_font (frame_font, CHARSET_SYMBOL (charset), | |
3446 | build_string (font), frame); | |
3447 | xfree (font); | |
3448 | } | |
3449 | } | |
3450 | else | |
3451 | { | |
3452 | /* Frame parameter is an X font name. I believe this can | |
3453 | only happen in unibyte mode. */ | |
3454 | font = choose_face_font (f, XVECTOR (lface)->contents, | |
3455 | -1, Vface_default_registry); | |
3456 | if (font) | |
3457 | { | |
3458 | store_frame_param (f, Qfont, build_string (font)); | |
3459 | xfree (font); | |
3460 | } | |
3461 | } | |
3462 | } | |
3463 | ||
3464 | ||
3465 | /* Get the value of X resource RESOURCE, class CLASS for the display | |
3466 | of frame FRAME. This is here because ordinary `x-get-resource' | |
3467 | doesn't take a frame argument. */ | |
3468 | ||
3469 | DEFUN ("internal-face-x-get-resource", Finternal_face_x_get_resource, | |
3470 | Sinternal_face_x_get_resource, 3, 3, 0, "") | |
3471 | (resource, class, frame) | |
3472 | Lisp_Object resource, class, frame; | |
3473 | { | |
3474 | Lisp_Object value; | |
3475 | CHECK_STRING (resource, 0); | |
3476 | CHECK_STRING (class, 1); | |
3477 | CHECK_LIVE_FRAME (frame, 2); | |
3478 | BLOCK_INPUT; | |
3479 | value = display_x_get_resource (FRAME_X_DISPLAY_INFO (XFRAME (frame)), | |
3480 | resource, class, Qnil, Qnil); | |
3481 | UNBLOCK_INPUT; | |
3482 | return value; | |
3483 | } | |
3484 | ||
3485 | ||
3486 | /* Return resource string VALUE as a boolean value, i.e. nil, or t. | |
3487 | If VALUE is "on" or "true", return t. If VALUE is "off" or | |
3488 | "false", return nil. Otherwise, if SIGNAL_P is non-zero, signal an | |
3489 | error; if SIGNAL_P is zero, return 0. */ | |
3490 | ||
3491 | static Lisp_Object | |
3492 | face_boolean_x_resource_value (value, signal_p) | |
3493 | Lisp_Object value; | |
3494 | int signal_p; | |
3495 | { | |
3496 | Lisp_Object result = make_number (0); | |
3497 | ||
3498 | xassert (STRINGP (value)); | |
3499 | ||
3500 | if (xstricmp (XSTRING (value)->data, "on") == 0 | |
3501 | || xstricmp (XSTRING (value)->data, "true") == 0) | |
3502 | result = Qt; | |
3503 | else if (xstricmp (XSTRING (value)->data, "off") == 0 | |
3504 | || xstricmp (XSTRING (value)->data, "false") == 0) | |
3505 | result = Qnil; | |
3506 | else if (xstricmp (XSTRING (value)->data, "unspecified") == 0) | |
3507 | result = Qunspecified; | |
3508 | else if (signal_p) | |
3509 | signal_error ("Invalid face attribute value from X resource", value); | |
3510 | ||
3511 | return result; | |
3512 | } | |
3513 | ||
3514 | ||
3515 | DEFUN ("internal-set-lisp-face-attribute-from-resource", | |
3516 | Finternal_set_lisp_face_attribute_from_resource, | |
3517 | Sinternal_set_lisp_face_attribute_from_resource, | |
3518 | 3, 4, 0, "") | |
3519 | (face, attr, value, frame) | |
3520 | Lisp_Object face, attr, value, frame; | |
3521 | { | |
3522 | CHECK_SYMBOL (face, 0); | |
3523 | CHECK_SYMBOL (attr, 1); | |
3524 | CHECK_STRING (value, 2); | |
3525 | ||
3526 | if (xstricmp (XSTRING (value)->data, "unspecified") == 0) | |
3527 | value = Qunspecified; | |
3528 | else if (EQ (attr, QCheight)) | |
3529 | { | |
3530 | value = Fstring_to_number (value, make_number (10)); | |
3531 | if (XINT (value) <= 0) | |
3532 | signal_error ("Invalid face height from X resource", value); | |
3533 | } | |
3534 | else if (EQ (attr, QCbold) || EQ (attr, QCitalic)) | |
3535 | value = face_boolean_x_resource_value (value, 1); | |
3536 | else if (EQ (attr, QCweight) || EQ (attr, QCslant) || EQ (attr, QCwidth)) | |
3537 | value = intern (XSTRING (value)->data); | |
3538 | else if (EQ (attr, QCreverse_video) || EQ (attr, QCinverse_video)) | |
3539 | value = face_boolean_x_resource_value (value, 1); | |
3540 | else if (EQ (attr, QCunderline) | |
3541 | || EQ (attr, QCoverline) | |
3542 | || EQ (attr, QCstrike_through) | |
3543 | || EQ (attr, QCbox)) | |
3544 | { | |
3545 | Lisp_Object boolean_value; | |
3546 | ||
3547 | /* If the result of face_boolean_x_resource_value is t or nil, | |
3548 | VALUE does NOT specify a color. */ | |
3549 | boolean_value = face_boolean_x_resource_value (value, 0); | |
3550 | if (SYMBOLP (boolean_value)) | |
3551 | value = boolean_value; | |
3552 | } | |
3553 | ||
3554 | return Finternal_set_lisp_face_attribute (face, attr, value, frame); | |
3555 | } | |
3556 | ||
3557 | ||
3558 | #endif /* HAVE_X_WINDOWS */ | |
3559 | ||
3560 | ||
3561 | ||
3562 | DEFUN ("internal-get-lisp-face-attribute", Finternal_get_lisp_face_attribute, | |
3563 | Sinternal_get_lisp_face_attribute, | |
3564 | 2, 3, 0, | |
3565 | "Return face attribute KEYWORD of face SYMBOL.\n\ | |
3566 | If SYMBOL does not name a valid Lisp face or KEYWORD isn't a valid\n\ | |
3567 | face attribute name, signal an error.\n\ | |
3568 | If the optional argument FRAME is given, report on face FACE in that\n\ | |
3569 | frame. If FRAME is t, report on the defaults for face FACE (for new\n\ | |
3570 | frames). If FRAME is omitted or nil, use the selected frame.") | |
3571 | (symbol, keyword, frame) | |
3572 | Lisp_Object symbol, keyword, frame; | |
3573 | { | |
3574 | Lisp_Object lface, value = Qnil; | |
3575 | ||
3576 | CHECK_SYMBOL (symbol, 0); | |
3577 | CHECK_SYMBOL (keyword, 1); | |
3578 | ||
3579 | if (EQ (frame, Qt)) | |
3580 | lface = lface_from_face_name (NULL, symbol, 1); | |
3581 | else | |
3582 | { | |
3583 | if (NILP (frame)) | |
3584 | XSETFRAME (frame, selected_frame); | |
3585 | CHECK_LIVE_FRAME (frame, 2); | |
3586 | lface = lface_from_face_name (XFRAME (frame), symbol, 1); | |
3587 | } | |
3588 | ||
3589 | if (EQ (keyword, QCfamily)) | |
3590 | value = LFACE_FAMILY (lface); | |
3591 | else if (EQ (keyword, QCheight)) | |
3592 | value = LFACE_HEIGHT (lface); | |
3593 | else if (EQ (keyword, QCweight)) | |
3594 | value = LFACE_WEIGHT (lface); | |
3595 | else if (EQ (keyword, QCslant)) | |
3596 | value = LFACE_SLANT (lface); | |
3597 | else if (EQ (keyword, QCunderline)) | |
3598 | value = LFACE_UNDERLINE (lface); | |
3599 | else if (EQ (keyword, QCoverline)) | |
3600 | value = LFACE_OVERLINE (lface); | |
3601 | else if (EQ (keyword, QCstrike_through)) | |
3602 | value = LFACE_STRIKE_THROUGH (lface); | |
3603 | else if (EQ (keyword, QCbox)) | |
3604 | value = LFACE_BOX (lface); | |
3605 | else if (EQ (keyword, QCinverse_video) | |
3606 | || EQ (keyword, QCreverse_video)) | |
3607 | value = LFACE_INVERSE (lface); | |
3608 | else if (EQ (keyword, QCforeground)) | |
3609 | value = LFACE_FOREGROUND (lface); | |
3610 | else if (EQ (keyword, QCbackground)) | |
3611 | value = LFACE_BACKGROUND (lface); | |
3612 | else if (EQ (keyword, QCstipple)) | |
3613 | value = LFACE_STIPPLE (lface); | |
3614 | else if (EQ (keyword, QCwidth)) | |
3615 | value = LFACE_SWIDTH (lface); | |
3616 | else | |
3617 | signal_error ("Invalid face attribute name", keyword); | |
3618 | ||
3619 | return value; | |
3620 | } | |
3621 | ||
3622 | ||
3623 | DEFUN ("internal-lisp-face-attribute-values", | |
3624 | Finternal_lisp_face_attribute_values, | |
3625 | Sinternal_lisp_face_attribute_values, 1, 1, 0, | |
3626 | "Return a list of valid discrete values for face attribute ATTR.\n\ | |
3627 | Value is nil if ATTR doesn't have a discrete set of valid values.") | |
3628 | (attr) | |
3629 | Lisp_Object attr; | |
3630 | { | |
3631 | Lisp_Object result = Qnil; | |
3632 | ||
3633 | CHECK_SYMBOL (attr, 0); | |
3634 | ||
3635 | if (EQ (attr, QCweight) | |
3636 | || EQ (attr, QCslant) | |
3637 | || EQ (attr, QCwidth)) | |
3638 | { | |
3639 | /* Extract permissible symbols from tables. */ | |
3640 | struct table_entry *table; | |
3641 | int i, dim; | |
3642 | ||
3643 | if (EQ (attr, QCweight)) | |
3644 | table = weight_table, dim = DIM (weight_table); | |
3645 | else if (EQ (attr, QCslant)) | |
3646 | table = slant_table, dim = DIM (slant_table); | |
3647 | else | |
3648 | table = swidth_table, dim = DIM (swidth_table); | |
3649 | ||
3650 | for (i = 0; i < dim; ++i) | |
3651 | { | |
3652 | Lisp_Object symbol = *table[i].symbol; | |
3653 | Lisp_Object tail = result; | |
3654 | ||
3655 | while (!NILP (tail) | |
3656 | && !EQ (XCAR (tail), symbol)) | |
3657 | tail = XCDR (tail); | |
3658 | ||
3659 | if (NILP (tail)) | |
3660 | result = Fcons (symbol, result); | |
3661 | } | |
3662 | } | |
3663 | else if (EQ (attr, QCunderline)) | |
3664 | result = Fcons (Qt, Fcons (Qnil, Qnil)); | |
3665 | else if (EQ (attr, QCoverline)) | |
3666 | result = Fcons (Qt, Fcons (Qnil, Qnil)); | |
3667 | else if (EQ (attr, QCstrike_through)) | |
3668 | result = Fcons (Qt, Fcons (Qnil, Qnil)); | |
3669 | else if (EQ (attr, QCinverse_video) || EQ (attr, QCreverse_video)) | |
3670 | result = Fcons (Qt, Fcons (Qnil, Qnil)); | |
3671 | ||
3672 | return result; | |
3673 | } | |
3674 | ||
3675 | ||
3676 | DEFUN ("internal-merge-in-global-face", Finternal_merge_in_global_face, | |
3677 | Sinternal_merge_in_global_face, 2, 2, 0, | |
3678 | "Add attributes from frame-default definition of FACE to FACE on FRAME.") | |
3679 | (face, frame) | |
3680 | Lisp_Object face, frame; | |
3681 | { | |
3682 | Lisp_Object global_lface, local_lface; | |
3683 | CHECK_LIVE_FRAME (frame, 1); | |
3684 | global_lface = lface_from_face_name (NULL, face, 1); | |
3685 | local_lface = lface_from_face_name (XFRAME (frame), face, 0); | |
3686 | if (NILP (local_lface)) | |
3687 | local_lface = Finternal_make_lisp_face (face, frame); | |
3688 | merge_face_vectors (XVECTOR (global_lface)->contents, | |
3689 | XVECTOR (local_lface)->contents); | |
3690 | return face; | |
3691 | } | |
3692 | ||
3693 | ||
3694 | /* The following function is implemented for compatibility with 20.2. | |
3695 | The function is used in x-resolve-fonts when it is asked to | |
3696 | return fonts with the same size as the font of a face. This is | |
3697 | done in fontset.el. */ | |
3698 | ||
3699 | DEFUN ("face-font", Fface_font, Sface_font, 1, 2, 0, | |
3700 | "Return the font name of face FACE, or nil if it is unspecified.\n\ | |
3701 | If the optional argument FRAME is given, report on face FACE in that frame.\n\ | |
3702 | If FRAME is t, report on the defaults for face FACE (for new frames).\n\ | |
3703 | The font default for a face is either nil, or a list\n\ | |
3704 | of the form (bold), (italic) or (bold italic).\n\ | |
3705 | If FRAME is omitted or nil, use the selected frame.") | |
3706 | (face, frame) | |
3707 | Lisp_Object face, frame; | |
3708 | { | |
3709 | if (EQ (frame, Qt)) | |
3710 | { | |
3711 | Lisp_Object result = Qnil; | |
3712 | Lisp_Object lface = lface_from_face_name (NULL, face, 1); | |
3713 | ||
3714 | if (!UNSPECIFIEDP (LFACE_WEIGHT (lface)) | |
3715 | && !EQ (LFACE_WEIGHT (lface), Qnormal)) | |
3716 | result = Fcons (Qbold, result); | |
3717 | ||
3718 | if (!NILP (LFACE_SLANT (lface)) | |
3719 | && !EQ (LFACE_SLANT (lface), Qnormal)) | |
3720 | result = Fcons (Qitalic, result); | |
3721 | ||
3722 | return result; | |
3723 | } | |
3724 | else | |
3725 | { | |
3726 | struct frame *f = frame_or_selected_frame (frame, 1); | |
3727 | int face_id = lookup_named_face (f, face, CHARSET_ASCII); | |
3728 | struct face *face = FACE_FROM_ID (f, face_id); | |
3729 | return build_string (face->font_name); | |
3730 | } | |
3731 | } | |
3732 | ||
3733 | ||
3734 | /* Compare face vectors V1 and V2 for equality. Value is non-zero if | |
3735 | all attributes are `equal'. Tries to be fast because this function | |
3736 | is called quite often. */ | |
3737 | ||
3738 | static INLINE int | |
3739 | lface_equal_p (v1, v2) | |
3740 | Lisp_Object *v1, *v2; | |
3741 | { | |
3742 | int i, equal_p = 1; | |
3743 | ||
3744 | for (i = 1; i < LFACE_VECTOR_SIZE && equal_p; ++i) | |
3745 | { | |
3746 | Lisp_Object a = v1[i]; | |
3747 | Lisp_Object b = v2[i]; | |
3748 | ||
3749 | /* Type can differ, e.g. when one attribute is unspecified, i.e. nil, | |
3750 | and the other is specified. */ | |
3751 | equal_p = XTYPE (a) == XTYPE (b); | |
3752 | if (!equal_p) | |
3753 | break; | |
3754 | ||
3755 | if (!EQ (a, b)) | |
3756 | { | |
3757 | switch (XTYPE (a)) | |
3758 | { | |
3759 | case Lisp_String: | |
3760 | equal_p = (XSTRING (a)->size == XSTRING (b)->size | |
3761 | && bcmp (XSTRING (a)->data, XSTRING (b)->data, | |
3762 | XSTRING (a)->size) == 0); | |
3763 | break; | |
3764 | ||
3765 | case Lisp_Int: | |
3766 | case Lisp_Symbol: | |
3767 | equal_p = 0; | |
3768 | break; | |
3769 | ||
3770 | default: | |
3771 | equal_p = !NILP (Fequal (a, b)); | |
3772 | break; | |
3773 | } | |
3774 | } | |
3775 | } | |
3776 | ||
3777 | return equal_p; | |
3778 | } | |
3779 | ||
3780 | ||
3781 | DEFUN ("internal-lisp-face-equal-p", Finternal_lisp_face_equal_p, | |
3782 | Sinternal_lisp_face_equal_p, 2, 3, 0, | |
3783 | "True if FACE1 and FACE2 are equal.\n\ | |
3784 | If the optional argument FRAME is given, report on face FACE in that frame.\n\ | |
3785 | If FRAME is t, report on the defaults for face FACE (for new frames).\n\ | |
3786 | If FRAME is omitted or nil, use the selected frame.") | |
3787 | (face1, face2, frame) | |
3788 | Lisp_Object face1, face2, frame; | |
3789 | { | |
3790 | int equal_p; | |
3791 | struct frame *f; | |
3792 | Lisp_Object lface1, lface2; | |
3793 | ||
3794 | if (EQ (frame, Qt)) | |
3795 | f = NULL; | |
3796 | else | |
3797 | /* Don't use check_x_frame here because this function is called | |
3798 | before X frames exist. At that time, if FRAME is nil, | |
3799 | selected_frame will be used which is the frame dumped with | |
3800 | Emacs. That frame is not an X frame. */ | |
3801 | f = frame_or_selected_frame (frame, 2); | |
3802 | ||
3803 | lface1 = lface_from_face_name (NULL, face1, 1); | |
3804 | lface2 = lface_from_face_name (NULL, face2, 1); | |
3805 | equal_p = lface_equal_p (XVECTOR (lface1)->contents, | |
3806 | XVECTOR (lface2)->contents); | |
3807 | return equal_p ? Qt : Qnil; | |
3808 | } | |
3809 | ||
3810 | ||
3811 | DEFUN ("internal-lisp-face-empty-p", Finternal_lisp_face_empty_p, | |
3812 | Sinternal_lisp_face_empty_p, 1, 2, 0, | |
3813 | "True if FACE has no attribute specified.\n\ | |
3814 | If the optional argument FRAME is given, report on face FACE in that frame.\n\ | |
3815 | If FRAME is t, report on the defaults for face FACE (for new frames).\n\ | |
3816 | If FRAME is omitted or nil, use the selected frame.") | |
3817 | (face, frame) | |
3818 | Lisp_Object face, frame; | |
3819 | { | |
3820 | struct frame *f; | |
3821 | Lisp_Object lface; | |
3822 | int i; | |
3823 | ||
3824 | if (NILP (frame)) | |
3825 | f = selected_frame; | |
3826 | else | |
3827 | { | |
3828 | CHECK_LIVE_FRAME (frame, 0); | |
3829 | f = XFRAME (frame); | |
3830 | } | |
3831 | ||
3832 | if (EQ (frame, Qt)) | |
3833 | lface = lface_from_face_name (NULL, face, 1); | |
3834 | else | |
3835 | lface = lface_from_face_name (f, face, 1); | |
3836 | ||
3837 | for (i = 1; i < LFACE_VECTOR_SIZE; ++i) | |
3838 | if (!UNSPECIFIEDP (XVECTOR (lface)->contents[i])) | |
3839 | break; | |
3840 | ||
3841 | return i == LFACE_VECTOR_SIZE ? Qt : Qnil; | |
3842 | } | |
3843 | ||
3844 | ||
3845 | DEFUN ("frame-face-alist", Fframe_face_alist, Sframe_face_alist, | |
3846 | 0, 1, 0, | |
3847 | "Return an alist of frame-local faces defined on FRAME.\n\ | |
3848 | For internal use only.") | |
3849 | (frame) | |
3850 | Lisp_Object frame; | |
3851 | { | |
3852 | struct frame *f = frame_or_selected_frame (frame, 0); | |
3853 | return f->face_alist; | |
3854 | } | |
3855 | ||
3856 | ||
3857 | /* Return a hash code for Lisp string STRING with case ignored. Used | |
3858 | below in computing a hash value for a Lisp face. */ | |
3859 | ||
3860 | static INLINE unsigned | |
3861 | hash_string_case_insensitive (string) | |
3862 | Lisp_Object string; | |
3863 | { | |
3864 | unsigned char *s; | |
3865 | unsigned hash = 0; | |
3866 | xassert (STRINGP (string)); | |
3867 | for (s = XSTRING (string)->data; *s; ++s) | |
3868 | hash = (hash << 1) ^ tolower (*s); | |
3869 | return hash; | |
3870 | } | |
3871 | ||
3872 | ||
3873 | /* Return a hash code for face attribute vector V. */ | |
3874 | ||
3875 | static INLINE unsigned | |
3876 | lface_hash (v) | |
3877 | Lisp_Object *v; | |
3878 | { | |
3879 | return (hash_string_case_insensitive (v[LFACE_FAMILY_INDEX]) | |
3880 | ^ hash_string_case_insensitive (v[LFACE_FOREGROUND_INDEX]) | |
3881 | ^ hash_string_case_insensitive (v[LFACE_BACKGROUND_INDEX]) | |
3882 | ^ (unsigned) v[LFACE_WEIGHT_INDEX] | |
3883 | ^ (unsigned) v[LFACE_SLANT_INDEX] | |
3884 | ^ (unsigned) v[LFACE_SWIDTH_INDEX] | |
3885 | ^ XFASTINT (v[LFACE_HEIGHT_INDEX])); | |
3886 | } | |
3887 | ||
3888 | ||
3889 | /* Return non-zero if LFACE1 and LFACE2 specify the same font (without | |
3890 | considering charsets/registries). They do if they specify the same | |
3891 | family, point size, weight, width and slant. Both LFACE1 and | |
3892 | LFACE2 must be fully-specified. */ | |
3893 | ||
3894 | static INLINE int | |
3895 | lface_same_font_attributes_p (lface1, lface2) | |
3896 | Lisp_Object *lface1, *lface2; | |
3897 | { | |
3898 | xassert (lface_fully_specified_p (lface1) | |
3899 | && lface_fully_specified_p (lface2)); | |
3900 | return (xstricmp (XSTRING (lface1[LFACE_FAMILY_INDEX])->data, | |
3901 | XSTRING (lface2[LFACE_FAMILY_INDEX])->data) == 0 | |
3902 | && (XFASTINT (lface1[LFACE_HEIGHT_INDEX]) | |
3903 | == XFASTINT (lface2[LFACE_HEIGHT_INDEX])) | |
3904 | && EQ (lface1[LFACE_SWIDTH_INDEX], lface2[LFACE_SWIDTH_INDEX]) | |
3905 | && EQ (lface1[LFACE_WEIGHT_INDEX], lface2[LFACE_WEIGHT_INDEX]) | |
3906 | && EQ (lface1[LFACE_SLANT_INDEX], lface2[LFACE_SLANT_INDEX])); | |
3907 | } | |
3908 | ||
3909 | ||
3910 | \f | |
3911 | /*********************************************************************** | |
3912 | Realized Faces | |
3913 | ***********************************************************************/ | |
3914 | ||
3915 | /* Allocate and return a new realized face for Lisp face attribute | |
3916 | vector ATTR, charset CHARSET, and registry REGISTRY. */ | |
3917 | ||
3918 | static struct face * | |
3919 | make_realized_face (attr, charset, registry) | |
3920 | Lisp_Object *attr; | |
3921 | int charset; | |
3922 | Lisp_Object registry; | |
3923 | { | |
3924 | struct face *face = (struct face *) xmalloc (sizeof *face); | |
3925 | bzero (face, sizeof *face); | |
3926 | face->charset = charset; | |
3927 | face->registry = registry; | |
3928 | bcopy (attr, face->lface, sizeof face->lface); | |
3929 | return face; | |
3930 | } | |
3931 | ||
3932 | ||
3933 | /* Free realized face FACE, including its X resources. FACE may | |
3934 | be null. */ | |
3935 | ||
3936 | static void | |
3937 | free_realized_face (f, face) | |
3938 | struct frame *f; | |
3939 | struct face *face; | |
3940 | { | |
3941 | if (face) | |
3942 | { | |
3943 | #ifdef HAVE_X_WINDOWS | |
3944 | if (FRAME_X_P (f)) | |
3945 | { | |
3946 | if (face->gc) | |
3947 | { | |
3948 | x_free_gc (f, face->gc); | |
3949 | face->gc = 0; | |
3950 | } | |
3951 | ||
3952 | free_face_colors (f, face); | |
3953 | x_destroy_bitmap (f, face->stipple); | |
3954 | } | |
3955 | #endif /* HAVE_X_WINDOWS */ | |
3956 | ||
3957 | xfree (face); | |
3958 | } | |
3959 | } | |
3960 | ||
3961 | ||
3962 | /* Prepare face FACE for subsequent display on frame F. This | |
3963 | allocated GCs if they haven't been allocated yet or have been freed | |
3964 | by clearing the face cache. */ | |
3965 | ||
3966 | void | |
3967 | prepare_face_for_display (f, face) | |
3968 | struct frame *f; | |
3969 | struct face *face; | |
3970 | { | |
3971 | #ifdef HAVE_X_WINDOWS | |
3972 | xassert (FRAME_X_P (f)); | |
3973 | ||
3974 | if (face->gc == 0) | |
3975 | { | |
3976 | XGCValues xgcv; | |
3977 | unsigned long mask = GCForeground | GCBackground | GCGraphicsExposures; | |
3978 | ||
3979 | xgcv.foreground = face->foreground; | |
3980 | xgcv.background = face->background; | |
3981 | xgcv.graphics_exposures = False; | |
3982 | ||
3983 | /* The font of FACE may be null if we couldn't load it. */ | |
3984 | if (face->font) | |
3985 | { | |
3986 | xgcv.font = face->font->fid; | |
3987 | mask |= GCFont; | |
3988 | } | |
3989 | ||
3990 | BLOCK_INPUT; | |
3991 | if (face->stipple) | |
3992 | { | |
be8a72f4 | 3993 | xgcv.fill_style = FillOpaqueStippled; |
82641697 GM |
3994 | xgcv.stipple = x_bitmap_pixmap (f, face->stipple); |
3995 | mask |= GCFillStyle | GCStipple; | |
3996 | } | |
3997 | ||
3998 | face->gc = x_create_gc (f, mask, &xgcv); | |
3999 | UNBLOCK_INPUT; | |
4000 | } | |
4001 | #endif | |
4002 | } | |
4003 | ||
4004 | ||
4005 | /* Non-zero if FACE is suitable for displaying ISO8859-1. Used in | |
4006 | macro FACE_SUITABLE_FOR_CHARSET_P to avoid realizing a new face for | |
4007 | ISO8859-1 if the ASCII face suffices. */ | |
4008 | ||
4009 | int | |
4010 | face_suitable_for_iso8859_1_p (face) | |
4011 | struct face *face; | |
4012 | { | |
4013 | int len = strlen (face->font_name); | |
4014 | return len >= 9 && xstricmp (face->font_name + len - 9, "iso8859-1") == 0; | |
4015 | } | |
4016 | ||
4017 | ||
4018 | /* Value is non-zero if FACE is suitable for displaying characters | |
4019 | of CHARSET. CHARSET < 0 means unibyte text. */ | |
4020 | ||
4021 | INLINE int | |
4022 | face_suitable_for_charset_p (face, charset) | |
4023 | struct face *face; | |
4024 | int charset; | |
4025 | { | |
4026 | int suitable_p = 0; | |
4027 | ||
4028 | if (charset < 0) | |
4029 | { | |
4030 | if (EQ (face->registry, Vface_default_registry) | |
4031 | || !NILP (Fequal (face->registry, Vface_default_registry))) | |
4032 | suitable_p = 1; | |
4033 | } | |
4034 | else if (face->charset == charset) | |
4035 | suitable_p = 1; | |
4036 | else if (face->charset == CHARSET_ASCII | |
4037 | && charset == charset_latin_iso8859_1) | |
4038 | suitable_p = face_suitable_for_iso8859_1_p (face); | |
4039 | else if (face->charset == charset_latin_iso8859_1 | |
4040 | && charset == CHARSET_ASCII) | |
4041 | suitable_p = 1; | |
4042 | ||
4043 | return suitable_p; | |
4044 | } | |
4045 | ||
4046 | ||
4047 | \f | |
4048 | /*********************************************************************** | |
4049 | Face Cache | |
4050 | ***********************************************************************/ | |
4051 | ||
4052 | /* Return a new face cache for frame F. */ | |
4053 | ||
4054 | static struct face_cache * | |
4055 | make_face_cache (f) | |
4056 | struct frame *f; | |
4057 | { | |
4058 | struct face_cache *c; | |
4059 | int size; | |
4060 | ||
4061 | c = (struct face_cache *) xmalloc (sizeof *c); | |
4062 | bzero (c, sizeof *c); | |
4063 | size = FACE_CACHE_BUCKETS_SIZE * sizeof *c->buckets; | |
4064 | c->buckets = (struct face **) xmalloc (size); | |
4065 | bzero (c->buckets, size); | |
4066 | c->size = 50; | |
4067 | c->faces_by_id = (struct face **) xmalloc (c->size * sizeof *c->faces_by_id); | |
4068 | c->f = f; | |
4069 | return c; | |
4070 | } | |
4071 | ||
4072 | ||
4073 | /* Clear out all graphics contexts for all realized faces, except for | |
4074 | the basic faces. This should be done from time to time just to avoid | |
4075 | keeping too many graphics contexts that are no longer needed. */ | |
4076 | ||
4077 | static void | |
4078 | clear_face_gcs (c) | |
4079 | struct face_cache *c; | |
4080 | { | |
4081 | if (c && FRAME_X_P (c->f)) | |
4082 | { | |
4083 | #ifdef HAVE_X_WINDOWS | |
4084 | int i; | |
4085 | for (i = BASIC_FACE_ID_SENTINEL; i < c->used; ++i) | |
4086 | { | |
4087 | struct face *face = c->faces_by_id[i]; | |
4088 | if (face && face->gc) | |
4089 | { | |
4090 | x_free_gc (c->f, face->gc); | |
4091 | face->gc = 0; | |
4092 | } | |
4093 | } | |
4094 | #endif /* HAVE_X_WINDOWS */ | |
4095 | } | |
4096 | } | |
4097 | ||
4098 | ||
4099 | /* Free all realized faces in face cache C, including basic faces. C | |
4100 | may be null. If faces are freed, make sure the frame's current | |
4101 | matrix is marked invalid, so that a display caused by an expose | |
4102 | event doesn't try to use faces we destroyed. */ | |
4103 | ||
4104 | static void | |
4105 | free_realized_faces (c) | |
4106 | struct face_cache *c; | |
4107 | { | |
4108 | if (c && c->used) | |
4109 | { | |
4110 | int i, size; | |
4111 | struct frame *f = c->f; | |
4112 | ||
4113 | for (i = 0; i < c->used; ++i) | |
4114 | { | |
4115 | free_realized_face (f, c->faces_by_id[i]); | |
4116 | c->faces_by_id[i] = NULL; | |
4117 | } | |
4118 | ||
4119 | c->used = 0; | |
4120 | size = FACE_CACHE_BUCKETS_SIZE * sizeof *c->buckets; | |
4121 | bzero (c->buckets, size); | |
4122 | ||
4123 | /* Must do a thorough redisplay the next time. Mark current | |
4124 | matrices as invalid because they will reference faces freed | |
4125 | above. This function is also called when a frame is | |
4126 | destroyed. In this case, the root window of F is nil. */ | |
4127 | if (WINDOWP (f->root_window)) | |
4128 | { | |
4129 | clear_current_matrices (f); | |
4130 | ++windows_or_buffers_changed; | |
4131 | } | |
4132 | } | |
4133 | } | |
4134 | ||
4135 | ||
4136 | /* Free all realized faces on FRAME or on all frames if FRAME is nil. | |
4137 | This is done after attributes of a named face have been changed, | |
4138 | because we can't tell which realized faces depend on that face. */ | |
4139 | ||
4140 | void | |
4141 | free_all_realized_faces (frame) | |
4142 | Lisp_Object frame; | |
4143 | { | |
4144 | if (NILP (frame)) | |
4145 | { | |
4146 | Lisp_Object rest; | |
4147 | FOR_EACH_FRAME (rest, frame) | |
4148 | free_realized_faces (FRAME_FACE_CACHE (XFRAME (frame))); | |
4149 | } | |
4150 | else | |
4151 | free_realized_faces (FRAME_FACE_CACHE (XFRAME (frame))); | |
4152 | } | |
4153 | ||
4154 | ||
4155 | /* Free face cache C and faces in it, including their X resources. */ | |
4156 | ||
4157 | static void | |
4158 | free_face_cache (c) | |
4159 | struct face_cache *c; | |
4160 | { | |
4161 | if (c) | |
4162 | { | |
4163 | free_realized_faces (c); | |
4164 | xfree (c->buckets); | |
4165 | xfree (c->faces_by_id); | |
4166 | xfree (c); | |
4167 | } | |
4168 | } | |
4169 | ||
4170 | ||
4171 | /* Cache realized face FACE in face cache C. HASH is the hash value | |
4172 | of FACE. If FACE->fontset >= 0, add the new face to the end of the | |
4173 | collision list of the face hash table of C. This is done because | |
4174 | otherwise lookup_face would find FACE for every charset, even if | |
4175 | faces with the same attributes but for specific charsets exist. */ | |
4176 | ||
4177 | static void | |
4178 | cache_face (c, face, hash) | |
4179 | struct face_cache *c; | |
4180 | struct face *face; | |
4181 | unsigned hash; | |
4182 | { | |
4183 | int i = hash % FACE_CACHE_BUCKETS_SIZE; | |
4184 | ||
4185 | face->hash = hash; | |
4186 | ||
4187 | if (face->fontset >= 0) | |
4188 | { | |
4189 | struct face *last = c->buckets[i]; | |
4190 | if (last) | |
4191 | { | |
4192 | while (last->next) | |
4193 | last = last->next; | |
4194 | last->next = face; | |
4195 | face->prev = last; | |
4196 | face->next = NULL; | |
4197 | } | |
4198 | else | |
4199 | { | |
4200 | c->buckets[i] = face; | |
4201 | face->prev = face->next = NULL; | |
4202 | } | |
4203 | } | |
4204 | else | |
4205 | { | |
4206 | face->prev = NULL; | |
4207 | face->next = c->buckets[i]; | |
4208 | if (face->next) | |
4209 | face->next->prev = face; | |
4210 | c->buckets[i] = face; | |
4211 | } | |
4212 | ||
4213 | /* Find a free slot in C->faces_by_id and use the index of the free | |
4214 | slot as FACE->id. */ | |
4215 | for (i = 0; i < c->used; ++i) | |
4216 | if (c->faces_by_id[i] == NULL) | |
4217 | break; | |
4218 | face->id = i; | |
4219 | ||
4220 | /* Maybe enlarge C->faces_by_id. */ | |
4221 | if (i == c->used && c->used == c->size) | |
4222 | { | |
4223 | int new_size = 2 * c->size; | |
4224 | int sz = new_size * sizeof *c->faces_by_id; | |
4225 | c->faces_by_id = (struct face **) xrealloc (c->faces_by_id, sz); | |
4226 | c->size = new_size; | |
4227 | } | |
4228 | ||
4229 | #if GLYPH_DEBUG | |
4230 | /* Check that FACE got a unique id. */ | |
4231 | { | |
4232 | int j, n; | |
4233 | struct face *face; | |
4234 | ||
4235 | for (j = n = 0; j < FACE_CACHE_BUCKETS_SIZE; ++j) | |
4236 | for (face = c->buckets[j]; face; face = face->next) | |
4237 | if (face->id == i) | |
4238 | ++n; | |
4239 | ||
4240 | xassert (n == 1); | |
4241 | } | |
4242 | #endif /* GLYPH_DEBUG */ | |
4243 | ||
4244 | c->faces_by_id[i] = face; | |
4245 | if (i == c->used) | |
4246 | ++c->used; | |
4247 | } | |
4248 | ||
4249 | ||
4250 | /* Remove face FACE from cache C. */ | |
4251 | ||
4252 | static void | |
4253 | uncache_face (c, face) | |
4254 | struct face_cache *c; | |
4255 | struct face *face; | |
4256 | { | |
4257 | int i = face->hash % FACE_CACHE_BUCKETS_SIZE; | |
4258 | ||
4259 | if (face->prev) | |
4260 | face->prev->next = face->next; | |
4261 | else | |
4262 | c->buckets[i] = face->next; | |
4263 | ||
4264 | if (face->next) | |
4265 | face->next->prev = face->prev; | |
4266 | ||
4267 | c->faces_by_id[face->id] = NULL; | |
4268 | if (face->id == c->used) | |
4269 | --c->used; | |
4270 | } | |
4271 | ||
4272 | ||
4273 | /* Look up a realized face with face attributes ATTR in the face cache | |
4274 | of frame F. The face will be used to display characters of | |
4275 | CHARSET. CHARSET < 0 means the face will be used to display | |
4276 | unibyte text. The value of face-default-registry is used to choose | |
4277 | a font for the face in that case. Value is the ID of the face | |
4278 | found. If no suitable face is found, realize a new one. */ | |
4279 | ||
4280 | INLINE int | |
4281 | lookup_face (f, attr, charset) | |
4282 | struct frame *f; | |
4283 | Lisp_Object *attr; | |
4284 | int charset; | |
4285 | { | |
4286 | struct face_cache *c = FRAME_FACE_CACHE (f); | |
4287 | unsigned hash; | |
4288 | int i; | |
4289 | struct face *face; | |
4290 | ||
4291 | xassert (c != NULL); | |
4292 | check_lface_attrs (attr); | |
4293 | ||
4294 | /* Look up ATTR in the face cache. */ | |
4295 | hash = lface_hash (attr); | |
4296 | i = hash % FACE_CACHE_BUCKETS_SIZE; | |
4297 | ||
4298 | for (face = c->buckets[i]; face; face = face->next) | |
4299 | if (face->hash == hash | |
44747bd0 | 4300 | && (!FRAME_WINDOW_P (f) |
82641697 GM |
4301 | || FACE_SUITABLE_FOR_CHARSET_P (face, charset)) |
4302 | && lface_equal_p (face->lface, attr)) | |
4303 | break; | |
4304 | ||
4305 | /* If not found, realize a new face. */ | |
4306 | if (face == NULL) | |
4307 | { | |
4308 | face = realize_face (c, attr, charset); | |
4309 | cache_face (c, face, hash); | |
4310 | } | |
4311 | ||
4312 | #if GLYPH_DEBUG | |
4313 | xassert (face == FACE_FROM_ID (f, face->id)); | |
4314 | if (FRAME_X_P (f)) | |
4315 | xassert (charset < 0 || FACE_SUITABLE_FOR_CHARSET_P (face, charset)); | |
4316 | #endif /* GLYPH_DEBUG */ | |
4317 | ||
4318 | return face->id; | |
4319 | } | |
4320 | ||
4321 | ||
4322 | /* Return the face id of the realized face for named face SYMBOL on | |
4323 | frame F suitable for displaying characters from CHARSET. CHARSET < | |
4324 | 0 means unibyte text. */ | |
4325 | ||
4326 | int | |
4327 | lookup_named_face (f, symbol, charset) | |
4328 | struct frame *f; | |
4329 | Lisp_Object symbol; | |
4330 | int charset; | |
4331 | { | |
4332 | Lisp_Object attrs[LFACE_VECTOR_SIZE]; | |
4333 | Lisp_Object symbol_attrs[LFACE_VECTOR_SIZE]; | |
4334 | struct face *default_face = FACE_FROM_ID (f, DEFAULT_FACE_ID); | |
4335 | ||
4336 | get_lface_attributes (f, symbol, symbol_attrs, 1); | |
4337 | bcopy (default_face->lface, attrs, sizeof attrs); | |
4338 | merge_face_vectors (symbol_attrs, attrs); | |
4339 | return lookup_face (f, attrs, charset); | |
4340 | } | |
4341 | ||
4342 | ||
4343 | /* Return the ID of the realized ASCII face of Lisp face with ID | |
4344 | LFACE_ID on frame F. Value is -1 if LFACE_ID isn't valid. */ | |
4345 | ||
4346 | int | |
4347 | ascii_face_of_lisp_face (f, lface_id) | |
4348 | struct frame *f; | |
4349 | int lface_id; | |
4350 | { | |
4351 | int face_id; | |
4352 | ||
4353 | if (lface_id >= 0 && lface_id < lface_id_to_name_size) | |
4354 | { | |
4355 | Lisp_Object face_name = lface_id_to_name[lface_id]; | |
4356 | face_id = lookup_named_face (f, face_name, CHARSET_ASCII); | |
4357 | } | |
4358 | else | |
4359 | face_id = -1; | |
4360 | ||
4361 | return face_id; | |
4362 | } | |
4363 | ||
4364 | ||
4365 | /* Return a face for charset ASCII that is like the face with id | |
4366 | FACE_ID on frame F, but has a font that is STEPS steps smaller. | |
4367 | STEPS < 0 means larger. Value is the id of the face. */ | |
4368 | ||
4369 | int | |
4370 | smaller_face (f, face_id, steps) | |
4371 | struct frame *f; | |
4372 | int face_id, steps; | |
4373 | { | |
4374 | #ifdef HAVE_X_WINDOWS | |
4375 | struct face *face; | |
4376 | Lisp_Object attrs[LFACE_VECTOR_SIZE]; | |
4377 | int pt, last_pt, last_height; | |
4378 | int delta; | |
4379 | int new_face_id; | |
4380 | struct face *new_face; | |
4381 | ||
4382 | /* If not called for an X frame, just return the original face. */ | |
4383 | if (FRAME_TERMCAP_P (f)) | |
4384 | return face_id; | |
4385 | ||
4386 | /* Try in increments of 1/2 pt. */ | |
4387 | delta = steps < 0 ? 5 : -5; | |
4388 | steps = abs (steps); | |
4389 | ||
4390 | face = FACE_FROM_ID (f, face_id); | |
4391 | bcopy (face->lface, attrs, sizeof attrs); | |
4392 | pt = last_pt = XFASTINT (attrs[LFACE_HEIGHT_INDEX]); | |
4393 | new_face_id = face_id; | |
4394 | last_height = FONT_HEIGHT (face->font); | |
4395 | ||
4396 | while (steps | |
4397 | && pt + delta > 0 | |
4398 | /* Give up if we cannot find a font within 10pt. */ | |
4399 | && abs (last_pt - pt) < 100) | |
4400 | { | |
4401 | /* Look up a face for a slightly smaller/larger font. */ | |
4402 | pt += delta; | |
4403 | attrs[LFACE_HEIGHT_INDEX] = make_number (pt); | |
4404 | new_face_id = lookup_face (f, attrs, CHARSET_ASCII); | |
4405 | new_face = FACE_FROM_ID (f, new_face_id); | |
4406 | ||
4407 | /* If height changes, count that as one step. */ | |
4408 | if (FONT_HEIGHT (new_face->font) != last_height) | |
4409 | { | |
4410 | --steps; | |
4411 | last_height = FONT_HEIGHT (new_face->font); | |
4412 | last_pt = pt; | |
4413 | } | |
4414 | } | |
4415 | ||
4416 | return new_face_id; | |
4417 | ||
4418 | #else /* not HAVE_X_WINDOWS */ | |
4419 | ||
4420 | return face_id; | |
4421 | ||
4422 | #endif /* not HAVE_X_WINDOWS */ | |
4423 | } | |
4424 | ||
4425 | ||
4426 | /* Return a face for charset ASCII that is like the face with id | |
4427 | FACE_ID on frame F, but has height HEIGHT. */ | |
4428 | ||
4429 | int | |
4430 | face_with_height (f, face_id, height) | |
4431 | struct frame *f; | |
4432 | int face_id; | |
4433 | int height; | |
4434 | { | |
4435 | #ifdef HAVE_X_WINDOWS | |
4436 | struct face *face; | |
4437 | Lisp_Object attrs[LFACE_VECTOR_SIZE]; | |
4438 | ||
4439 | if (FRAME_TERMCAP_P (f) | |
4440 | || height <= 0) | |
4441 | return face_id; | |
4442 | ||
4443 | face = FACE_FROM_ID (f, face_id); | |
4444 | bcopy (face->lface, attrs, sizeof attrs); | |
4445 | attrs[LFACE_HEIGHT_INDEX] = make_number (height); | |
4446 | face_id = lookup_face (f, attrs, CHARSET_ASCII); | |
4447 | #endif /* HAVE_X_WINDOWS */ | |
4448 | ||
4449 | return face_id; | |
4450 | } | |
4451 | ||
44747bd0 EZ |
4452 | /* Return the face id of the realized face for named face SYMBOL on |
4453 | frame F suitable for displaying characters from CHARSET (CHARSET < | |
4454 | 0 means unibyte text), and use attributes of the face FACE_ID for | |
4455 | attributes that aren't completely specified by SYMBOL. This is | |
4456 | like lookup_named_face, except that the default attributes come | |
4457 | from FACE_ID, not from the default face. FACE_ID is assumed to | |
4458 | be already realized. */ | |
4459 | ||
4460 | int | |
4461 | lookup_derived_face (f, symbol, charset, face_id) | |
4462 | struct frame *f; | |
4463 | Lisp_Object symbol; | |
4464 | int charset; | |
4465 | int face_id; | |
4466 | { | |
4467 | Lisp_Object attrs[LFACE_VECTOR_SIZE]; | |
4468 | Lisp_Object symbol_attrs[LFACE_VECTOR_SIZE]; | |
4469 | struct face *default_face = FACE_FROM_ID (f, face_id); | |
4470 | ||
4471 | if (!default_face) | |
4472 | abort (); | |
4473 | ||
4474 | get_lface_attributes (f, symbol, symbol_attrs, 1); | |
4475 | bcopy (default_face->lface, attrs, sizeof attrs); | |
4476 | merge_face_vectors (symbol_attrs, attrs); | |
4477 | return lookup_face (f, attrs, charset); | |
4478 | } | |
4479 | ||
82641697 GM |
4480 | |
4481 | \f | |
4482 | /*********************************************************************** | |
4483 | Font selection | |
4484 | ***********************************************************************/ | |
4485 | ||
4486 | DEFUN ("internal-set-font-selection-order", | |
4487 | Finternal_set_font_selection_order, | |
4488 | Sinternal_set_font_selection_order, 1, 1, 0, | |
4489 | "Set font selection order for face font selection to ORDER.\n\ | |
4490 | ORDER must be a list of length 4 containing the symbols `:width',\n\ | |
4491 | `:height', `:weight', and `:slant'. Face attributes appearing\n\ | |
4492 | first in ORDER are matched first, e.g. if `:height' appears before\n\ | |
4493 | `:weight' in ORDER, font selection first tries to find a font with\n\ | |
4494 | a suitable height, and then tries to match the font weight.\n\ | |
4495 | Value is ORDER.") | |
4496 | (order) | |
4497 | Lisp_Object order; | |
4498 | { | |
4499 | Lisp_Object list; | |
4500 | int i; | |
4501 | int indices[4]; | |
4502 | ||
4503 | CHECK_LIST (order, 0); | |
4504 | bzero (indices, sizeof indices); | |
4505 | i = 0; | |
4506 | ||
4507 | for (list = order; | |
4508 | CONSP (list) && i < DIM (indices); | |
4509 | list = XCDR (list), ++i) | |
4510 | { | |
4511 | Lisp_Object attr = XCAR (list); | |
4512 | int xlfd; | |
4513 | ||
4514 | if (EQ (attr, QCwidth)) | |
4515 | xlfd = XLFD_SWIDTH; | |
4516 | else if (EQ (attr, QCheight)) | |
4517 | xlfd = XLFD_POINT_SIZE; | |
4518 | else if (EQ (attr, QCweight)) | |
4519 | xlfd = XLFD_WEIGHT; | |
4520 | else if (EQ (attr, QCslant)) | |
4521 | xlfd = XLFD_SLANT; | |
4522 | else | |
4523 | break; | |
4524 | ||
4525 | if (indices[i] != 0) | |
4526 | break; | |
4527 | indices[i] = xlfd; | |
4528 | } | |
4529 | ||
4530 | if (!NILP (list) | |
4531 | || i != DIM (indices) | |
4532 | || indices[0] == 0 | |
4533 | || indices[1] == 0 | |
4534 | || indices[2] == 0 | |
4535 | || indices[3] == 0) | |
4536 | signal_error ("Invalid font sort order", order); | |
4537 | ||
4538 | if (bcmp (indices, font_sort_order, sizeof indices) != 0) | |
4539 | { | |
4540 | bcopy (indices, font_sort_order, sizeof font_sort_order); | |
4541 | free_all_realized_faces (Qnil); | |
4542 | } | |
4543 | ||
4544 | return Qnil; | |
4545 | } | |
4546 | ||
4547 | ||
4548 | DEFUN ("internal-set-alternative-font-family-alist", | |
4549 | Finternal_set_alternative_font_family_alist, | |
4550 | Sinternal_set_alternative_font_family_alist, 1, 1, 0, | |
4551 | "Define alternative font families to try in face font selection.\n\ | |
4552 | ALIST is an alist of (FAMILY ALTERNATIVE1 ALTERNATIVE2 ...) entries.\n\ | |
4553 | Each ALTERNATIVE is tried in order if no fonts of font family FAMILY can\n\ | |
4554 | be found. Value is ALIST.") | |
4555 | (alist) | |
4556 | Lisp_Object alist; | |
4557 | { | |
4558 | CHECK_LIST (alist, 0); | |
4559 | Vface_alternative_font_family_alist = alist; | |
4560 | free_all_realized_faces (Qnil); | |
4561 | return alist; | |
4562 | } | |
4563 | ||
4564 | ||
4565 | #ifdef HAVE_X_WINDOWS | |
4566 | ||
4567 | /* Return the X registry and encoding of font name FONT_NAME on frame F. | |
4568 | Value is nil if not successful. */ | |
4569 | ||
4570 | static Lisp_Object | |
4571 | deduce_unibyte_registry (f, font_name) | |
4572 | struct frame *f; | |
4573 | char *font_name; | |
4574 | { | |
4575 | struct font_name font; | |
4576 | Lisp_Object registry = Qnil; | |
4577 | ||
4578 | font.name = STRDUPA (font_name); | |
4579 | if (split_font_name (f, &font, 0)) | |
4580 | { | |
4581 | char *buffer; | |
4582 | ||
4583 | /* Extract registry and encoding. */ | |
4584 | buffer = (char *) alloca (strlen (font.fields[XLFD_REGISTRY]) | |
4585 | + strlen (font.fields[XLFD_ENCODING]) | |
4586 | + 10); | |
4587 | strcpy (buffer, font.fields[XLFD_REGISTRY]); | |
4588 | strcat (buffer, "-"); | |
4589 | strcat (buffer, font.fields[XLFD_ENCODING]); | |
4590 | registry = build_string (buffer); | |
4591 | } | |
4592 | ||
4593 | return registry; | |
4594 | } | |
4595 | ||
4596 | ||
4597 | /* Value is non-zero if FONT is the name of a scalable font. The | |
4598 | X11R6 XLFD spec says that point size, pixel size, and average width | |
4599 | are zero for scalable fonts. Intlfonts contain at least one | |
4600 | scalable font ("*-muleindian-1") for which this isn't true, so we | |
4601 | just test average width. */ | |
4602 | ||
4603 | static int | |
4604 | font_scalable_p (font) | |
4605 | struct font_name *font; | |
4606 | { | |
4607 | char *s = font->fields[XLFD_AVGWIDTH]; | |
4608 | return *s == '0' && *(s + 1) == '\0'; | |
4609 | } | |
4610 | ||
4611 | ||
4612 | /* Value is non-zero if FONT1 is a better match for font attributes | |
4613 | VALUES than FONT2. VALUES is an array of face attribute values in | |
4614 | font sort order. COMPARE_PT_P zero means don't compare point | |
4615 | sizes. */ | |
4616 | ||
4617 | static int | |
4618 | better_font_p (values, font1, font2, compare_pt_p) | |
4619 | int *values; | |
4620 | struct font_name *font1, *font2; | |
4621 | int compare_pt_p; | |
4622 | { | |
4623 | int i; | |
4624 | ||
4625 | for (i = 0; i < 4; ++i) | |
4626 | { | |
4627 | int xlfd_idx = font_sort_order[i]; | |
4628 | ||
4629 | if (compare_pt_p || xlfd_idx != XLFD_POINT_SIZE) | |
4630 | { | |
4631 | int delta1 = abs (values[i] - font1->numeric[xlfd_idx]); | |
4632 | int delta2 = abs (values[i] - font2->numeric[xlfd_idx]); | |
4633 | ||
4634 | if (delta1 > delta2) | |
4635 | return 0; | |
4636 | else if (delta1 < delta2) | |
4637 | return 1; | |
4638 | else | |
4639 | { | |
4640 | /* The difference may be equal because, e.g., the face | |
4641 | specifies `italic' but we have only `regular' and | |
4642 | `oblique'. Prefer `oblique' in this case. */ | |
4643 | if ((xlfd_idx == XLFD_WEIGHT || xlfd_idx == XLFD_SLANT) | |
4644 | && font1->numeric[xlfd_idx] > values[i] | |
4645 | && font2->numeric[xlfd_idx] < values[i]) | |
4646 | return 1; | |
4647 | } | |
4648 | } | |
4649 | } | |
4650 | ||
4651 | return 0; | |
4652 | } | |
4653 | ||
4654 | ||
4655 | #if SCALABLE_FONTS | |
4656 | ||
4657 | /* Value is non-zero if FONT is an exact match for face attributes in | |
4658 | SPECIFIED. SPECIFIED is an array of face attribute values in font | |
4659 | sort order. */ | |
4660 | ||
4661 | static int | |
4662 | exact_face_match_p (specified, font) | |
4663 | int *specified; | |
4664 | struct font_name *font; | |
4665 | { | |
4666 | int i; | |
4667 | ||
4668 | for (i = 0; i < 4; ++i) | |
4669 | if (specified[i] != font->numeric[font_sort_order[i]]) | |
4670 | break; | |
4671 | ||
4672 | return i == 4; | |
4673 | } | |
4674 | ||
4675 | ||
4676 | /* Value is the name of a scaled font, generated from scalable font | |
4677 | FONT on frame F. SPECIFIED_PT is the point-size to scale FONT to. | |
4678 | Value is allocated from heap. */ | |
4679 | ||
4680 | static char * | |
4681 | build_scalable_font_name (f, font, specified_pt) | |
4682 | struct frame *f; | |
4683 | struct font_name *font; | |
4684 | int specified_pt; | |
4685 | { | |
4686 | char point_size[20], pixel_size[20]; | |
4687 | int pixel_value; | |
4688 | double resy = FRAME_X_DISPLAY_INFO (f)->resy; | |
4689 | double pt; | |
4690 | ||
4691 | /* If scalable font is for a specific resolution, compute | |
4692 | the point size we must specify from the resolution of | |
4693 | the display and the specified resolution of the font. */ | |
4694 | if (font->numeric[XLFD_RESY] != 0) | |
4695 | { | |
4696 | pt = resy / font->numeric[XLFD_RESY] * specified_pt + 0.5; | |
4697 | pixel_value = font->numeric[XLFD_RESY] / 720.0 * pt; | |
4698 | } | |
4699 | else | |
4700 | { | |
4701 | pt = specified_pt; | |
4702 | pixel_value = resy / 720.0 * pt; | |
4703 | } | |
4704 | ||
4705 | /* Set point size of the font. */ | |
4706 | sprintf (point_size, "%d", (int) pt); | |
4707 | font->fields[XLFD_POINT_SIZE] = point_size; | |
4708 | font->numeric[XLFD_POINT_SIZE] = pt; | |
4709 | ||
4710 | /* Set pixel size. */ | |
4711 | sprintf (pixel_size, "%d", pixel_value); | |
4712 | font->fields[XLFD_PIXEL_SIZE] = pixel_size; | |
4713 | font->numeric[XLFD_PIXEL_SIZE] = pixel_value; | |
4714 | ||
4715 | /* If font doesn't specify its resolution, use the | |
4716 | resolution of the display. */ | |
4717 | if (font->numeric[XLFD_RESY] == 0) | |
4718 | { | |
4719 | char buffer[20]; | |
4720 | sprintf (buffer, "%d", (int) resy); | |
4721 | font->fields[XLFD_RESY] = buffer; | |
4722 | font->numeric[XLFD_RESY] = resy; | |
4723 | } | |
4724 | ||
4725 | if (strcmp (font->fields[XLFD_RESX], "0") == 0) | |
4726 | { | |
4727 | char buffer[20]; | |
4728 | int resx = FRAME_X_DISPLAY_INFO (f)->resx; | |
4729 | sprintf (buffer, "%d", resx); | |
4730 | font->fields[XLFD_RESX] = buffer; | |
4731 | font->numeric[XLFD_RESX] = resx; | |
4732 | } | |
4733 | ||
4734 | return build_font_name (font); | |
4735 | } | |
4736 | ||
4737 | ||
4738 | /* Value is non-zero if we are allowed to use scalable font FONT. We | |
4739 | can't run a Lisp function here since this function may be called | |
4740 | with input blocked. */ | |
4741 | ||
4742 | static int | |
4743 | may_use_scalable_font_p (font, name) | |
4744 | struct font_name *font; | |
4745 | char *name; | |
4746 | { | |
4747 | if (EQ (Vscalable_fonts_allowed, Qt)) | |
4748 | return 1; | |
4749 | else if (CONSP (Vscalable_fonts_allowed)) | |
4750 | { | |
4751 | Lisp_Object tail, regexp; | |
4752 | ||
4753 | for (tail = Vscalable_fonts_allowed; CONSP (tail); tail = XCDR (tail)) | |
4754 | { | |
4755 | regexp = XCAR (tail); | |
4756 | if (STRINGP (regexp) | |
4757 | && fast_c_string_match_ignore_case (regexp, name) >= 0) | |
4758 | return 1; | |
4759 | } | |
4760 | } | |
4761 | ||
4762 | return 0; | |
4763 | } | |
4764 | ||
4765 | #endif /* SCALABLE_FONTS != 0 */ | |
4766 | ||
4767 | ||
4768 | /* Return the name of the best matching font for face attributes | |
4769 | ATTRS in the array of font_name structures FONTS which contains | |
4770 | NFONTS elements. Value is a font name which is allocated from | |
4771 | the heap. FONTS is freed by this function. */ | |
4772 | ||
4773 | static char * | |
4774 | best_matching_font (f, attrs, fonts, nfonts) | |
4775 | struct frame *f; | |
4776 | Lisp_Object *attrs; | |
4777 | struct font_name *fonts; | |
4778 | int nfonts; | |
4779 | { | |
4780 | char *font_name; | |
4781 | struct font_name *best; | |
4782 | int i, pt; | |
4783 | int specified[4]; | |
4784 | int exact_p; | |
4785 | ||
4786 | if (nfonts == 0) | |
4787 | return NULL; | |
4788 | ||
4789 | /* Make specified font attributes available in `specified', | |
4790 | indexed by sort order. */ | |
4791 | for (i = 0; i < DIM (font_sort_order); ++i) | |
4792 | { | |
4793 | int xlfd_idx = font_sort_order[i]; | |
4794 | ||
4795 | if (xlfd_idx == XLFD_SWIDTH) | |
4796 | specified[i] = face_numeric_swidth (attrs[LFACE_SWIDTH_INDEX]); | |
4797 | else if (xlfd_idx == XLFD_POINT_SIZE) | |
4798 | specified[i] = pt = XFASTINT (attrs[LFACE_HEIGHT_INDEX]); | |
4799 | else if (xlfd_idx == XLFD_WEIGHT) | |
4800 | specified[i] = face_numeric_weight (attrs[LFACE_WEIGHT_INDEX]); | |
4801 | else if (xlfd_idx == XLFD_SLANT) | |
4802 | specified[i] = face_numeric_slant (attrs[LFACE_SLANT_INDEX]); | |
4803 | else | |
4804 | abort (); | |
4805 | } | |
4806 | ||
4807 | #if SCALABLE_FONTS | |
4808 | ||
4809 | /* Set to 1 */ | |
4810 | exact_p = 0; | |
4811 | ||
4812 | /* Start with the first non-scalable font in the list. */ | |
4813 | for (i = 0; i < nfonts; ++i) | |
4814 | if (!font_scalable_p (fonts + i)) | |
4815 | break; | |
4816 | ||
4817 | /* Find the best match among the non-scalable fonts. */ | |
4818 | if (i < nfonts) | |
4819 | { | |
4820 | best = fonts + i; | |
4821 | ||
4822 | for (i = 1; i < nfonts; ++i) | |
4823 | if (!font_scalable_p (fonts + i) | |
4824 | && better_font_p (specified, fonts + i, best, 1)) | |
4825 | { | |
4826 | best = fonts + i; | |
4827 | ||
4828 | exact_p = exact_face_match_p (specified, best); | |
4829 | if (exact_p) | |
4830 | break; | |
4831 | } | |
4832 | ||
4833 | } | |
4834 | else | |
4835 | best = NULL; | |
4836 | ||
4837 | /* Unless we found an exact match among non-scalable fonts, see if | |
4838 | we can find a better match among scalable fonts. */ | |
4839 | if (!exact_p) | |
4840 | { | |
4841 | /* A scalable font is better if | |
4842 | ||
4843 | 1. its weight, slant, swidth attributes are better, or. | |
4844 | ||
4845 | 2. the best non-scalable font doesn't have the required | |
4846 | point size, and the scalable fonts weight, slant, swidth | |
4847 | isn't worse. */ | |
4848 | ||
4849 | int non_scalable_has_exact_height_p; | |
4850 | ||
4851 | if (best && best->numeric[XLFD_POINT_SIZE] == pt) | |
4852 | non_scalable_has_exact_height_p = 1; | |
4853 | else | |
4854 | non_scalable_has_exact_height_p = 0; | |
4855 | ||
4856 | for (i = 0; i < nfonts; ++i) | |
4857 | if (font_scalable_p (fonts + i)) | |
4858 | { | |
4859 | if (best == NULL | |
4860 | || better_font_p (specified, fonts + i, best, 0) | |
4861 | || (!non_scalable_has_exact_height_p | |
4862 | && !better_font_p (specified, best, fonts + i, 0))) | |
4863 | best = fonts + i; | |
4864 | } | |
4865 | } | |
4866 | ||
4867 | if (font_scalable_p (best)) | |
4868 | font_name = build_scalable_font_name (f, best, pt); | |
4869 | else | |
4870 | font_name = build_font_name (best); | |
4871 | ||
4872 | #else /* !SCALABLE_FONTS */ | |
4873 | ||
4874 | /* Find the best non-scalable font. */ | |
4875 | best = fonts; | |
4876 | ||
4877 | for (i = 1; i < nfonts; ++i) | |
4878 | { | |
4879 | xassert (!font_scalable_p (fonts + i)); | |
4880 | if (better_font_p (specified, fonts + i, best, 1)) | |
4881 | best = fonts + i; | |
4882 | } | |
4883 | ||
4884 | font_name = build_font_name (best); | |
4885 | ||
4886 | #endif /* !SCALABLE_FONTS */ | |
4887 | ||
4888 | /* Free font_name structures. */ | |
4889 | free_font_names (fonts, nfonts); | |
4890 | ||
4891 | return font_name; | |
4892 | } | |
4893 | ||
4894 | ||
4895 | /* Try to get a list of fonts on frame F with font family FAMILY and | |
4896 | registry/encoding REGISTRY. Return in *FONTS a pointer to a vector | |
4897 | of font_name structures for the fonts matched. Value is the number | |
4898 | of fonts found. */ | |
4899 | ||
4900 | static int | |
4901 | try_font_list (f, attrs, pattern, family, registry, fonts) | |
4902 | struct frame *f; | |
4903 | Lisp_Object *attrs; | |
4904 | char *pattern, *family, *registry; | |
4905 | struct font_name **fonts; | |
4906 | { | |
4907 | int nfonts; | |
4908 | ||
4909 | if (family == NULL) | |
4910 | family = LSTRDUPA (attrs[LFACE_FAMILY_INDEX]); | |
4911 | ||
4912 | nfonts = font_list (f, pattern, family, registry, fonts); | |
4913 | ||
4914 | if (nfonts == 0) | |
4915 | { | |
4916 | Lisp_Object alter; | |
4917 | ||
4918 | /* Try alternative font families from | |
4919 | Vface_alternative_font_family_alist. */ | |
4920 | alter = Fassoc (build_string (family), | |
4921 | Vface_alternative_font_family_alist); | |
4922 | if (CONSP (alter)) | |
4923 | for (alter = XCDR (alter); | |
4924 | CONSP (alter) && nfonts == 0; | |
4925 | alter = XCDR (alter)) | |
4926 | { | |
4927 | if (STRINGP (XCAR (alter))) | |
4928 | { | |
4929 | family = LSTRDUPA (XCAR (alter)); | |
4930 | nfonts = font_list (f, NULL, family, registry, fonts); | |
4931 | } | |
4932 | } | |
4933 | ||
4934 | /* Try font family of the default face or "fixed". */ | |
4935 | if (nfonts == 0) | |
4936 | { | |
4937 | struct face *dflt = FACE_FROM_ID (f, DEFAULT_FACE_ID); | |
4938 | if (dflt) | |
4939 | family = LSTRDUPA (dflt->lface[LFACE_FAMILY_INDEX]); | |
4940 | else | |
4941 | family = "fixed"; | |
4942 | nfonts = font_list (f, NULL, family, registry, fonts); | |
4943 | } | |
4944 | ||
4945 | /* Try any family with the given registry. */ | |
4946 | if (nfonts == 0) | |
4947 | nfonts = font_list (f, NULL, "*", registry, fonts); | |
4948 | } | |
4949 | ||
4950 | return nfonts; | |
4951 | } | |
4952 | ||
4953 | ||
4954 | /* Return the registry and encoding pattern that fonts for CHARSET | |
4955 | should match. Value is allocated from the heap. */ | |
4956 | ||
4957 | char * | |
4958 | x_charset_registry (charset) | |
4959 | int charset; | |
4960 | { | |
4961 | Lisp_Object prop, charset_plist; | |
4962 | char *registry; | |
4963 | ||
4964 | /* Get registry and encoding from the charset's plist. */ | |
4965 | charset_plist = CHARSET_TABLE_INFO (charset, CHARSET_PLIST_IDX); | |
4966 | prop = Fplist_get (charset_plist, Qx_charset_registry); | |
4967 | ||
4968 | if (STRINGP (prop)) | |
4969 | { | |
4970 | if (index (XSTRING (prop)->data, '-')) | |
4971 | registry = xstrdup (XSTRING (prop)->data); | |
4972 | else | |
4973 | { | |
4974 | /* If registry doesn't contain a `-', make it a pattern. */ | |
4975 | registry = (char *) xmalloc (STRING_BYTES (XSTRING (prop)) + 5); | |
4976 | strcpy (registry, XSTRING (prop)->data); | |
4977 | strcat (registry, "*-*"); | |
4978 | } | |
4979 | } | |
4980 | else if (STRINGP (Vface_default_registry)) | |
4981 | registry = xstrdup (XSTRING (Vface_default_registry)->data); | |
4982 | else | |
4983 | registry = xstrdup ("iso8859-1"); | |
4984 | ||
4985 | return registry; | |
4986 | } | |
4987 | ||
4988 | ||
4989 | /* Return the fontset id of the fontset name or alias name given by | |
4990 | the family attribute of ATTRS on frame F. Value is -1 if the | |
4991 | family attribute of ATTRS doesn't name a fontset. */ | |
4992 | ||
4993 | static int | |
4994 | face_fontset (f, attrs) | |
4995 | struct frame *f; | |
4996 | Lisp_Object *attrs; | |
4997 | { | |
4998 | Lisp_Object name = attrs[LFACE_FAMILY_INDEX]; | |
4999 | int fontset; | |
5000 | ||
5001 | name = Fquery_fontset (name, Qnil); | |
5002 | if (NILP (name)) | |
5003 | fontset = -1; | |
5004 | else | |
5005 | fontset = fs_query_fontset (f, XSTRING (name)->data); | |
5006 | ||
5007 | return fontset; | |
5008 | } | |
5009 | ||
5010 | ||
5011 | /* Get the font to use for the face realizing the fully-specified Lisp | |
5012 | face ATTRS for charset CHARSET on frame F. CHARSET < 0 means | |
5013 | unibyte text; UNIBYTE_REGISTRY is the registry and encoding to use | |
5014 | in this case. Value is the font name which is allocated from the | |
5015 | heap (which means that it must be freed eventually). */ | |
5016 | ||
5017 | static char * | |
5018 | choose_face_font (f, attrs, charset, unibyte_registry) | |
5019 | struct frame *f; | |
5020 | Lisp_Object *attrs; | |
5021 | int charset; | |
5022 | Lisp_Object unibyte_registry; | |
5023 | { | |
5024 | struct font_name *fonts; | |
5025 | int nfonts; | |
5026 | char *registry; | |
5027 | ||
5028 | /* ATTRS must be fully-specified. */ | |
5029 | xassert (lface_fully_specified_p (attrs)); | |
5030 | ||
5031 | if (STRINGP (unibyte_registry)) | |
5032 | registry = xstrdup (XSTRING (unibyte_registry)->data); | |
5033 | else | |
5034 | registry = x_charset_registry (charset); | |
5035 | ||
5036 | nfonts = try_font_list (f, attrs, NULL, NULL, registry, &fonts); | |
5037 | xfree (registry); | |
5038 | return best_matching_font (f, attrs, fonts, nfonts); | |
5039 | } | |
5040 | ||
5041 | ||
5042 | /* Choose a font to use on frame F to display CHARSET using FONTSET | |
5043 | with Lisp face attributes specified by ATTRS. CHARSET may be any | |
5044 | valid charset except CHARSET_COMPOSITION. CHARSET < 0 means | |
5045 | unibyte text. If the fontset doesn't contain a font pattern for | |
5046 | charset, use the pattern for CHARSET_ASCII. Value is the font name | |
5047 | which is allocated from the heap and must be freed by the caller. */ | |
5048 | ||
5049 | static char * | |
5050 | choose_face_fontset_font (f, attrs, fontset, charset) | |
5051 | struct frame *f; | |
5052 | Lisp_Object *attrs; | |
5053 | int fontset, charset; | |
5054 | { | |
5055 | char *pattern; | |
5056 | char *font_name = NULL; | |
5057 | struct fontset_info *fontset_info; | |
5058 | struct font_name *fonts; | |
5059 | int nfonts; | |
5060 | ||
5061 | xassert (charset != CHARSET_COMPOSITION); | |
5062 | xassert (fontset >= 0 && fontset < FRAME_FONTSET_DATA (f)->n_fontsets); | |
5063 | ||
5064 | /* For unibyte text, use the ASCII font of the fontset. Using the | |
5065 | ASCII font seems to be the most reasonable thing we can do in | |
5066 | this case. */ | |
5067 | if (charset < 0) | |
5068 | charset = CHARSET_ASCII; | |
5069 | ||
5070 | /* Get the font name pattern to use for CHARSET from the fontset. */ | |
5071 | fontset_info = FRAME_FONTSET_DATA (f)->fontset_table[fontset]; | |
5072 | pattern = fontset_info->fontname[charset]; | |
5073 | if (!pattern) | |
5074 | pattern = fontset_info->fontname[CHARSET_ASCII]; | |
5075 | xassert (pattern); | |
5076 | ||
5077 | /* Get a list of fonts matching that pattern and choose the | |
5078 | best match for the specified face attributes from it. */ | |
5079 | nfonts = try_font_list (f, attrs, pattern, NULL, NULL, &fonts); | |
5080 | font_name = best_matching_font (f, attrs, fonts, nfonts); | |
5081 | return font_name; | |
5082 | } | |
5083 | ||
5084 | #endif /* HAVE_X_WINDOWS */ | |
5085 | ||
5086 | ||
5087 | \f | |
5088 | /*********************************************************************** | |
5089 | Face Realization | |
5090 | ***********************************************************************/ | |
5091 | ||
5092 | /* Realize basic faces on frame F. Value is zero if frame parameters | |
5093 | of F don't contain enough information needed to realize the default | |
5094 | face. */ | |
5095 | ||
5096 | static int | |
5097 | realize_basic_faces (f) | |
5098 | struct frame *f; | |
5099 | { | |
5100 | int success_p = 0; | |
5101 | ||
5102 | if (realize_default_face (f)) | |
5103 | { | |
5104 | realize_named_face (f, Qmodeline, MODE_LINE_FACE_ID); | |
5105 | realize_named_face (f, Qtoolbar, TOOLBAR_FACE_ID); | |
5106 | realize_named_face (f, Qbitmap_area, BITMAP_AREA_FACE_ID); | |
5107 | realize_named_face (f, Qtop_line, TOP_LINE_FACE_ID); | |
5108 | success_p = 1; | |
5109 | } | |
5110 | ||
5111 | return success_p; | |
5112 | } | |
5113 | ||
5114 | ||
5115 | /* Realize the default face on frame F. If the face is not fully | |
5116 | specified, make it fully-specified. Attributes of the default face | |
5117 | that are not explicitly specified are taken from frame parameters. */ | |
5118 | ||
5119 | static int | |
5120 | realize_default_face (f) | |
5121 | struct frame *f; | |
5122 | { | |
5123 | struct face_cache *c = FRAME_FACE_CACHE (f); | |
5124 | Lisp_Object lface; | |
5125 | Lisp_Object attrs[LFACE_VECTOR_SIZE]; | |
5126 | Lisp_Object unibyte_registry; | |
5127 | Lisp_Object frame_font; | |
5128 | struct face *face; | |
5129 | int fontset; | |
5130 | ||
5131 | /* If the `default' face is not yet known, create it. */ | |
5132 | lface = lface_from_face_name (f, Qdefault, 0); | |
5133 | if (NILP (lface)) | |
5134 | { | |
5135 | Lisp_Object frame; | |
5136 | XSETFRAME (frame, f); | |
5137 | lface = Finternal_make_lisp_face (Qdefault, frame); | |
5138 | } | |
5139 | ||
5140 | #ifdef HAVE_X_WINDOWS | |
5141 | if (FRAME_X_P (f)) | |
5142 | { | |
5143 | /* Set frame_font to the value of the `font' frame parameter. */ | |
5144 | frame_font = Fassq (Qfont, f->param_alist); | |
5145 | xassert (CONSP (frame_font) && STRINGP (XCDR (frame_font))); | |
5146 | frame_font = XCDR (frame_font); | |
5147 | ||
5148 | fontset = fs_query_fontset (f, XSTRING (frame_font)->data); | |
5149 | if (fontset >= 0) | |
5150 | { | |
5151 | /* If frame_font is a fontset name, don't use that for | |
5152 | determining font-related attributes of the default face | |
5153 | because it is just an artificial name. Use the ASCII font of | |
5154 | the fontset, instead. */ | |
5155 | struct font_info *font_info; | |
5156 | struct font_name font; | |
5157 | ||
5158 | BLOCK_INPUT; | |
5159 | font_info = FS_LOAD_FONT (f, FRAME_X_FONT_TABLE (f), CHARSET_ASCII, | |
5160 | NULL, fontset); | |
5161 | UNBLOCK_INPUT; | |
5162 | ||
5163 | /* Set weight etc. from the ASCII font. */ | |
5164 | if (!set_lface_from_font_name (f, lface, font_info->full_name, 0)) | |
5165 | return 0; | |
5166 | ||
5167 | /* Remember registry and encoding of the frame font. */ | |
5168 | unibyte_registry = deduce_unibyte_registry (f, font_info->full_name); | |
5169 | if (STRINGP (unibyte_registry)) | |
5170 | Vface_default_registry = unibyte_registry; | |
5171 | else | |
5172 | Vface_default_registry = build_string ("iso8859-1"); | |
5173 | ||
5174 | /* But set the family to the fontset alias name. Implementation | |
5175 | note: When a font is passed to Emacs via `-fn FONT', a | |
5176 | fontset is created in `x-win.el' whose name ends in | |
5177 | `fontset-startup'. This fontset has an alias name that is | |
5178 | equal to frame_font. */ | |
5179 | xassert (STRINGP (frame_font)); | |
5180 | font.name = LSTRDUPA (frame_font); | |
5181 | ||
5182 | if (!split_font_name (f, &font, 1) | |
5183 | || xstricmp (font.fields[XLFD_REGISTRY], "fontset") != 0 | |
5184 | || xstricmp (font.fields[XLFD_ENCODING], "startup") != 0) | |
5185 | LFACE_FAMILY (lface) = frame_font; | |
5186 | } | |
5187 | else | |
5188 | { | |
5189 | /* Frame parameters contain a real font. Fill default face | |
5190 | attributes from that font. */ | |
5191 | if (!set_lface_from_font_name (f, lface, | |
5192 | XSTRING (frame_font)->data, 0)) | |
5193 | return 0; | |
5194 | ||
5195 | /* Remember registry and encoding of the frame font. */ | |
5196 | unibyte_registry | |
5197 | = deduce_unibyte_registry (f, XSTRING (frame_font)->data); | |
5198 | if (STRINGP (unibyte_registry)) | |
5199 | Vface_default_registry = unibyte_registry; | |
5200 | else | |
5201 | Vface_default_registry = build_string ("iso8859-1"); | |
5202 | } | |
5203 | } | |
5204 | #endif /* HAVE_X_WINDOWS */ | |
5205 | ||
44747bd0 | 5206 | if (!FRAME_WINDOW_P (f)) |
82641697 GM |
5207 | { |
5208 | LFACE_FAMILY (lface) = build_string ("default"); | |
5209 | LFACE_SWIDTH (lface) = Qnormal; | |
5210 | LFACE_HEIGHT (lface) = make_number (1); | |
5211 | LFACE_WEIGHT (lface) = Qnormal; | |
5212 | LFACE_SLANT (lface) = Qnormal; | |
5213 | } | |
5214 | ||
5215 | if (UNSPECIFIEDP (LFACE_UNDERLINE (lface))) | |
5216 | LFACE_UNDERLINE (lface) = Qnil; | |
5217 | ||
5218 | if (UNSPECIFIEDP (LFACE_OVERLINE (lface))) | |
5219 | LFACE_OVERLINE (lface) = Qnil; | |
5220 | ||
5221 | if (UNSPECIFIEDP (LFACE_STRIKE_THROUGH (lface))) | |
5222 | LFACE_STRIKE_THROUGH (lface) = Qnil; | |
5223 | ||
5224 | if (UNSPECIFIEDP (LFACE_BOX (lface))) | |
5225 | LFACE_BOX (lface) = Qnil; | |
5226 | ||
5227 | if (UNSPECIFIEDP (LFACE_INVERSE (lface))) | |
5228 | LFACE_INVERSE (lface) = Qnil; | |
5229 | ||
5230 | if (UNSPECIFIEDP (LFACE_FOREGROUND (lface))) | |
5231 | { | |
5232 | /* This function is called so early that colors are not yet | |
5233 | set in the frame parameter list. */ | |
5234 | Lisp_Object color = Fassq (Qforeground_color, f->param_alist); | |
5235 | ||
5236 | if (CONSP (color) && STRINGP (XCDR (color))) | |
5237 | LFACE_FOREGROUND (lface) = XCDR (color); | |
5238 | else if (FRAME_X_P (f)) | |
5239 | return 0; | |
44747bd0 | 5240 | else if (FRAME_TERMCAP_P (f) || FRAME_MSDOS_P (f)) |
82641697 GM |
5241 | /* Frame parameters for terminal frames usually don't contain |
5242 | a color. Use an empty string to indicate that the face | |
5243 | should use the (unknown) default color of the terminal. */ | |
5244 | LFACE_FOREGROUND (lface) = build_string (""); | |
5245 | else | |
5246 | abort (); | |
5247 | } | |
5248 | ||
5249 | if (UNSPECIFIEDP (LFACE_BACKGROUND (lface))) | |
5250 | { | |
5251 | /* This function is called so early that colors are not yet | |
5252 | set in the frame parameter list. */ | |
5253 | Lisp_Object color = Fassq (Qbackground_color, f->param_alist); | |
5254 | if (CONSP (color) && STRINGP (XCDR (color))) | |
5255 | LFACE_BACKGROUND (lface) = XCDR (color); | |
5256 | else if (FRAME_X_P (f)) | |
5257 | return 0; | |
44747bd0 | 5258 | else if (FRAME_TERMCAP_P (f) || FRAME_MSDOS_P (f)) |
82641697 GM |
5259 | /* Frame parameters for terminal frames usually don't contain |
5260 | a color. Use an empty string to indicate that the face | |
5261 | should use the (unknown) default color of the terminal. */ | |
5262 | LFACE_BACKGROUND (lface) = build_string (""); | |
5263 | else | |
5264 | abort (); | |
5265 | } | |
5266 | ||
5267 | if (UNSPECIFIEDP (LFACE_STIPPLE (lface))) | |
5268 | LFACE_STIPPLE (lface) = Qnil; | |
5269 | ||
5270 | /* Realize the face; it must be fully-specified now. */ | |
5271 | xassert (lface_fully_specified_p (XVECTOR (lface)->contents)); | |
5272 | check_lface (lface); | |
5273 | bcopy (XVECTOR (lface)->contents, attrs, sizeof attrs); | |
5274 | face = realize_face (c, attrs, CHARSET_ASCII); | |
5275 | ||
5276 | /* Remove the former default face. */ | |
5277 | if (c->used > DEFAULT_FACE_ID) | |
5278 | { | |
5279 | struct face *default_face = FACE_FROM_ID (f, DEFAULT_FACE_ID); | |
5280 | uncache_face (c, default_face); | |
5281 | free_realized_face (f, default_face); | |
5282 | } | |
5283 | ||
5284 | /* Insert the new default face. */ | |
5285 | cache_face (c, face, lface_hash (attrs)); | |
5286 | xassert (face->id == DEFAULT_FACE_ID); | |
5287 | return 1; | |
5288 | } | |
5289 | ||
5290 | ||
5291 | /* Realize basic faces other than the default face in face cache C. | |
5292 | SYMBOL is the face name, ID is the face id the realized face must | |
5293 | have. The default face must have been realized already. */ | |
5294 | ||
5295 | static void | |
5296 | realize_named_face (f, symbol, id) | |
5297 | struct frame *f; | |
5298 | Lisp_Object symbol; | |
5299 | int id; | |
5300 | { | |
5301 | struct face_cache *c = FRAME_FACE_CACHE (f); | |
5302 | Lisp_Object lface = lface_from_face_name (f, symbol, 0); | |
5303 | Lisp_Object attrs[LFACE_VECTOR_SIZE]; | |
5304 | Lisp_Object symbol_attrs[LFACE_VECTOR_SIZE]; | |
5305 | struct face *new_face; | |
5306 | ||
5307 | /* The default face must exist and be fully specified. */ | |
5308 | get_lface_attributes (f, Qdefault, attrs, 1); | |
5309 | check_lface_attrs (attrs); | |
5310 | xassert (lface_fully_specified_p (attrs)); | |
5311 | ||
5312 | /* If SYMBOL isn't know as a face, create it. */ | |
5313 | if (NILP (lface)) | |
5314 | { | |
5315 | Lisp_Object frame; | |
5316 | XSETFRAME (frame, f); | |
5317 | lface = Finternal_make_lisp_face (symbol, frame); | |
5318 | } | |
5319 | ||
5320 | /* Merge SYMBOL's face with the default face. */ | |
5321 | get_lface_attributes (f, symbol, symbol_attrs, 1); | |
5322 | merge_face_vectors (symbol_attrs, attrs); | |
5323 | ||
5324 | /* Realize the face. */ | |
5325 | new_face = realize_face (c, attrs, CHARSET_ASCII); | |
5326 | ||
5327 | /* Remove the former face. */ | |
5328 | if (c->used > id) | |
5329 | { | |
5330 | struct face *old_face = c->faces_by_id[id]; | |
5331 | uncache_face (c, old_face); | |
5332 | free_realized_face (f, old_face); | |
5333 | } | |
5334 | ||
5335 | /* Insert the new face. */ | |
5336 | cache_face (c, new_face, lface_hash (attrs)); | |
5337 | xassert (new_face->id == id); | |
5338 | } | |
5339 | ||
5340 | ||
5341 | /* Realize the fully-specified face with attributes ATTRS in face | |
5342 | cache C for character set CHARSET or for unibyte text if CHARSET < | |
5343 | 0. Value is a pointer to the newly created realized face. */ | |
5344 | ||
5345 | static struct face * | |
5346 | realize_face (c, attrs, charset) | |
5347 | struct face_cache *c; | |
5348 | Lisp_Object *attrs; | |
5349 | int charset; | |
5350 | { | |
5351 | struct face *face; | |
5352 | ||
5353 | /* LFACE must be fully specified. */ | |
5354 | xassert (c != NULL); | |
5355 | check_lface_attrs (attrs); | |
5356 | ||
5357 | if (FRAME_X_P (c->f)) | |
5358 | face = realize_x_face (c, attrs, charset); | |
44747bd0 | 5359 | else if (FRAME_TERMCAP_P (c->f) || FRAME_MSDOS_P (c->f)) |
82641697 GM |
5360 | face = realize_tty_face (c, attrs, charset); |
5361 | else | |
5362 | abort (); | |
5363 | ||
5364 | return face; | |
5365 | } | |
5366 | ||
5367 | ||
5368 | /* Realize the fully-specified face with attributes ATTRS in face | |
5369 | cache C for character set CHARSET or for unibyte text if CHARSET < | |
5370 | 0. Do it for X frame C->f. Value is a pointer to the newly | |
5371 | created realized face. */ | |
5372 | ||
5373 | static struct face * | |
5374 | realize_x_face (c, attrs, charset) | |
5375 | struct face_cache *c; | |
5376 | Lisp_Object *attrs; | |
5377 | int charset; | |
5378 | { | |
5379 | #ifdef HAVE_X_WINDOWS | |
5380 | struct face *face, *default_face; | |
5381 | struct frame *f = c->f; | |
5382 | Lisp_Object stipple, overline, strike_through, box; | |
5383 | Lisp_Object unibyte_registry; | |
5384 | struct gcpro gcpro1; | |
5385 | ||
5386 | xassert (FRAME_X_P (f)); | |
5387 | ||
5388 | /* If realizing a face for use in unibyte text, get the X registry | |
5389 | and encoding to use from Vface_default_registry. */ | |
5390 | if (charset < 0) | |
5391 | unibyte_registry = (STRINGP (Vface_default_registry) | |
5392 | ? Vface_default_registry | |
5393 | : build_string ("iso8859-1")); | |
5394 | else | |
5395 | unibyte_registry = Qnil; | |
5396 | GCPRO1 (unibyte_registry); | |
5397 | ||
5398 | /* Allocate a new realized face. */ | |
5399 | face = make_realized_face (attrs, charset, unibyte_registry); | |
5400 | ||
5401 | /* Determine the font to use. Most of the time, the font will be | |
5402 | the same as the font of the default face, so try that first. */ | |
5403 | default_face = FACE_FROM_ID (f, DEFAULT_FACE_ID); | |
5404 | if (default_face | |
5405 | && FACE_SUITABLE_FOR_CHARSET_P (default_face, charset) | |
5406 | && lface_same_font_attributes_p (default_face->lface, attrs)) | |
5407 | { | |
5408 | face->font = default_face->font; | |
5409 | face->fontset = default_face->fontset; | |
5410 | face->font_info_id = default_face->font_info_id; | |
5411 | face->font_name = default_face->font_name; | |
5412 | face->registry = default_face->registry; | |
5413 | } | |
5414 | else if (charset >= 0) | |
5415 | { | |
5416 | /* For all charsets except CHARSET_COMPOSITION, we use our own | |
5417 | font selection functions to choose a best matching font for | |
5418 | the specified face attributes. If the face specifies a | |
5419 | fontset alias name, the fontset determines the font name | |
5420 | pattern, otherwise we construct a font pattern from face | |
5421 | attributes and charset. | |
5422 | ||
5423 | If charset is CHARSET_COMPOSITION, we always construct a face | |
5424 | with a fontset, even if the face doesn't specify a fontset alias | |
5425 | (we use fontset-standard in that case). When the composite | |
5426 | character is displayed in xterm.c, a suitable concrete font is | |
5427 | loaded in x_get_char_font_and_encoding. */ | |
5428 | ||
5429 | char *font_name = NULL; | |
5430 | int fontset = face_fontset (f, attrs); | |
5431 | ||
5432 | if (charset == CHARSET_COMPOSITION) | |
5433 | fontset = max (0, fontset); | |
5434 | else if (fontset < 0) | |
5435 | font_name = choose_face_font (f, attrs, charset, Qnil); | |
5436 | else | |
5437 | { | |
5438 | font_name = choose_face_fontset_font (f, attrs, fontset, charset); | |
5439 | fontset = -1; | |
5440 | } | |
5441 | ||
5442 | load_face_font_or_fontset (f, face, font_name, fontset); | |
5443 | xfree (font_name); | |
5444 | } | |
5445 | else | |
5446 | { | |
5447 | /* Unibyte case, and font is not equal to that of the default | |
5448 | face. UNIBYTE_REGISTRY is the X registry and encoding the | |
5449 | font should have. What is a reasonable thing to do if the | |
5450 | user specified a fontset alias name for the face in this | |
5451 | case? We choose a font by taking the ASCII font of the | |
5452 | fontset, but using UNIBYTE_REGISTRY for its registry and | |
5453 | encoding. */ | |
5454 | ||
5455 | char *font_name = NULL; | |
5456 | int fontset = face_fontset (f, attrs); | |
5457 | ||
5458 | if (fontset < 0) | |
5459 | font_name = choose_face_font (f, attrs, charset, unibyte_registry); | |
5460 | else | |
5461 | font_name = choose_face_fontset_font (f, attrs, fontset, charset); | |
5462 | ||
5463 | load_face_font_or_fontset (f, face, font_name, -1); | |
5464 | xfree (font_name); | |
5465 | } | |
5466 | ||
5467 | /* Load colors, and set remaining attributes. */ | |
5468 | ||
5469 | load_face_colors (f, face, attrs); | |
660ed669 | 5470 | |
82641697 GM |
5471 | /* Set up box. */ |
5472 | box = attrs[LFACE_BOX_INDEX]; | |
5473 | if (STRINGP (box)) | |
cb637678 | 5474 | { |
82641697 GM |
5475 | /* A simple box of line width 1 drawn in color given by |
5476 | the string. */ | |
5477 | face->box_color = load_color (f, face, attrs[LFACE_BOX_INDEX], | |
5478 | LFACE_BOX_INDEX); | |
5479 | face->box = FACE_SIMPLE_BOX; | |
5480 | face->box_line_width = 1; | |
cb637678 | 5481 | } |
82641697 | 5482 | else if (INTEGERP (box)) |
42120bc7 | 5483 | { |
82641697 GM |
5484 | /* Simple box of specified line width in foreground color of the |
5485 | face. */ | |
5486 | xassert (XINT (box) > 0); | |
5487 | face->box = FACE_SIMPLE_BOX; | |
5488 | face->box_line_width = XFASTINT (box); | |
5489 | face->box_color = face->foreground; | |
5490 | face->box_color_defaulted_p = 1; | |
5491 | } | |
5492 | else if (CONSP (box)) | |
5493 | { | |
5494 | /* `(:width WIDTH :color COLOR :shadow SHADOW)'. SHADOW | |
5495 | being one of `raised' or `sunken'. */ | |
5496 | face->box = FACE_SIMPLE_BOX; | |
5497 | face->box_color = face->foreground; | |
5498 | face->box_color_defaulted_p = 1; | |
5499 | face->box_line_width = 1; | |
5500 | ||
5501 | while (CONSP (box)) | |
42120bc7 | 5502 | { |
82641697 GM |
5503 | Lisp_Object keyword, value; |
5504 | ||
5505 | keyword = XCAR (box); | |
5506 | box = XCDR (box); | |
5507 | ||
5508 | if (!CONSP (box)) | |
5509 | break; | |
5510 | value = XCAR (box); | |
5511 | box = XCDR (box); | |
5512 | ||
5513 | if (EQ (keyword, QCline_width)) | |
5514 | { | |
5515 | if (INTEGERP (value) && XINT (value) > 0) | |
5516 | face->box_line_width = XFASTINT (value); | |
5517 | } | |
5518 | else if (EQ (keyword, QCcolor)) | |
5519 | { | |
5520 | if (STRINGP (value)) | |
5521 | { | |
5522 | face->box_color = load_color (f, face, value, | |
5523 | LFACE_BOX_INDEX); | |
5524 | face->use_box_color_for_shadows_p = 1; | |
5525 | } | |
5526 | } | |
5527 | else if (EQ (keyword, QCstyle)) | |
a8517066 | 5528 | { |
82641697 GM |
5529 | if (EQ (value, Qreleased_button)) |
5530 | face->box = FACE_RAISED_BOX; | |
5531 | else if (EQ (value, Qpressed_button)) | |
5532 | face->box = FACE_SUNKEN_BOX; | |
a8517066 | 5533 | } |
42120bc7 RS |
5534 | } |
5535 | } | |
195f798e | 5536 | |
82641697 GM |
5537 | /* Text underline, overline, strike-through. */ |
5538 | ||
5539 | if (EQ (attrs[LFACE_UNDERLINE_INDEX], Qt)) | |
5540 | { | |
5541 | /* Use default color (same as foreground color). */ | |
5542 | face->underline_p = 1; | |
5543 | face->underline_defaulted_p = 1; | |
5544 | face->underline_color = 0; | |
5545 | } | |
5546 | else if (STRINGP (attrs[LFACE_UNDERLINE_INDEX])) | |
195f798e | 5547 | { |
82641697 GM |
5548 | /* Use specified color. */ |
5549 | face->underline_p = 1; | |
5550 | face->underline_defaulted_p = 0; | |
5551 | face->underline_color | |
5552 | = load_color (f, face, attrs[LFACE_UNDERLINE_INDEX], | |
5553 | LFACE_UNDERLINE_INDEX); | |
195f798e | 5554 | } |
82641697 | 5555 | else if (NILP (attrs[LFACE_UNDERLINE_INDEX])) |
7b00de84 | 5556 | { |
82641697 GM |
5557 | face->underline_p = 0; |
5558 | face->underline_defaulted_p = 0; | |
5559 | face->underline_color = 0; | |
7b00de84 JB |
5560 | } |
5561 | ||
82641697 GM |
5562 | overline = attrs[LFACE_OVERLINE_INDEX]; |
5563 | if (STRINGP (overline)) | |
cb637678 | 5564 | { |
82641697 GM |
5565 | face->overline_color |
5566 | = load_color (f, face, attrs[LFACE_OVERLINE_INDEX], | |
5567 | LFACE_OVERLINE_INDEX); | |
5568 | face->overline_p = 1; | |
cb637678 | 5569 | } |
82641697 | 5570 | else if (EQ (overline, Qt)) |
cb637678 | 5571 | { |
82641697 GM |
5572 | face->overline_color = face->foreground; |
5573 | face->overline_color_defaulted_p = 1; | |
5574 | face->overline_p = 1; | |
cb637678 JB |
5575 | } |
5576 | ||
82641697 GM |
5577 | strike_through = attrs[LFACE_STRIKE_THROUGH_INDEX]; |
5578 | if (STRINGP (strike_through)) | |
5579 | { | |
5580 | face->strike_through_color | |
5581 | = load_color (f, face, attrs[LFACE_STRIKE_THROUGH_INDEX], | |
5582 | LFACE_STRIKE_THROUGH_INDEX); | |
5583 | face->strike_through_p = 1; | |
5584 | } | |
5585 | else if (EQ (strike_through, Qt)) | |
5586 | { | |
5587 | face->strike_through_color = face->foreground; | |
5588 | face->strike_through_color_defaulted_p = 1; | |
5589 | face->strike_through_p = 1; | |
5590 | } | |
867dd159 | 5591 | |
82641697 GM |
5592 | stipple = attrs[LFACE_STIPPLE_INDEX]; |
5593 | if (!NILP (stipple)) | |
5594 | face->stipple = load_pixmap (f, stipple, &face->pixmap_w, &face->pixmap_h); | |
660ed669 | 5595 | |
82641697 GM |
5596 | UNGCPRO; |
5597 | xassert (face->fontset < 0 || face->charset == CHARSET_COMPOSITION); | |
5598 | xassert (FACE_SUITABLE_FOR_CHARSET_P (face, charset)); | |
5599 | return face; | |
5600 | #endif /* HAVE_X_WINDOWS */ | |
660ed669 JB |
5601 | } |
5602 | ||
729425b1 | 5603 | |
82641697 GM |
5604 | /* Realize the fully-specified face with attributes ATTRS in face |
5605 | cache C for character set CHARSET or for unibyte text if CHARSET < | |
5606 | 0. Do it for TTY frame C->f. Value is a pointer to the newly | |
5607 | created realized face. */ | |
a8517066 | 5608 | |
82641697 GM |
5609 | static struct face * |
5610 | realize_tty_face (c, attrs, charset) | |
5611 | struct face_cache *c; | |
5612 | Lisp_Object *attrs; | |
5613 | int charset; | |
5614 | { | |
5615 | struct face *face; | |
5616 | int weight, slant; | |
5617 | Lisp_Object color; | |
729425b1 | 5618 | |
82641697 | 5619 | /* Frame must be a termcap frame. */ |
44747bd0 | 5620 | xassert (FRAME_TERMCAP_P (c->f) || FRAME_MSDOS_P (c->f)); |
82641697 GM |
5621 | |
5622 | /* Allocate a new realized face. */ | |
5623 | face = make_realized_face (attrs, charset, Qnil); | |
44747bd0 | 5624 | face->font_name = FRAME_MSDOS_P (c->f) ? "ms-dos" : "tty"; |
82641697 GM |
5625 | |
5626 | /* Map face attributes to TTY appearances. We map slant to | |
5627 | dimmed text because we want italic text to appear differently | |
5628 | and because dimmed text is probably used infrequently. */ | |
5629 | weight = face_numeric_weight (attrs[LFACE_WEIGHT_INDEX]); | |
5630 | slant = face_numeric_slant (attrs[LFACE_SLANT_INDEX]); | |
5631 | ||
5632 | if (weight > XLFD_WEIGHT_MEDIUM) | |
5633 | face->tty_bold_p = 1; | |
5634 | if (weight < XLFD_WEIGHT_MEDIUM || slant != XLFD_SLANT_ROMAN) | |
5635 | face->tty_dim_p = 1; | |
5636 | if (!NILP (attrs[LFACE_UNDERLINE_INDEX])) | |
5637 | face->tty_underline_p = 1; | |
5638 | if (!NILP (attrs[LFACE_INVERSE_INDEX])) | |
5639 | face->tty_reverse_p = 1; | |
5640 | ||
5641 | /* Map color names to color indices. */ | |
5642 | face->foreground = face->background = FACE_TTY_DEFAULT_COLOR; | |
5643 | ||
5644 | color = attrs[LFACE_FOREGROUND_INDEX]; | |
5645 | if (XSTRING (color)->size | |
5646 | && (color = Fassoc (color, Vface_tty_color_alist), | |
5647 | CONSP (color))) | |
5648 | face->foreground = XINT (XCDR (color)); | |
5649 | ||
44747bd0 EZ |
5650 | #ifdef MSDOS |
5651 | if (FRAME_MSDOS_P (c->f) && face->foreground == FACE_TTY_DEFAULT_COLOR) | |
1697ca38 EZ |
5652 | { |
5653 | face->foreground = load_color (c->f, face, | |
5654 | attrs[LFACE_FOREGROUND_INDEX], | |
5655 | LFACE_FOREGROUND_INDEX); | |
5656 | /* If the foreground of the default face is the default color, | |
5657 | use the foreground color defined by the frame. */ | |
5658 | if (face->foreground == FACE_TTY_DEFAULT_COLOR) | |
5659 | { | |
5660 | face->foreground = FRAME_FOREGROUND_PIXEL (f); | |
5661 | attrs[LFACE_FOREGROUND_INDEX] = | |
5662 | build_string (msdos_stdcolor_name (face->foreground)); | |
5663 | } | |
5664 | } | |
44747bd0 EZ |
5665 | #endif |
5666 | ||
82641697 GM |
5667 | color = attrs[LFACE_BACKGROUND_INDEX]; |
5668 | if (XSTRING (color)->size | |
5669 | && (color = Fassoc (color, Vface_tty_color_alist), | |
5670 | CONSP (color))) | |
5671 | face->background = XINT (XCDR (color)); | |
729425b1 | 5672 | |
44747bd0 EZ |
5673 | #ifdef MSDOS |
5674 | if (FRAME_MSDOS_P (c->f) && face->background == FACE_TTY_DEFAULT_COLOR) | |
1697ca38 EZ |
5675 | { |
5676 | face->background = load_color (c->f, face, | |
5677 | attrs[LFACE_BACKGROUND_INDEX], | |
5678 | LFACE_BACKGROUND_INDEX); | |
5679 | /* If the background of the default face is the default color, | |
5680 | use the background color defined by the frame. */ | |
5681 | if (face->background == FACE_TTY_DEFAULT_COLOR) | |
5682 | { | |
5683 | face->background = FRAME_BACKGROUND_PIXEL (f); | |
5684 | attrs[LFACE_BACKGROUND_INDEX] = | |
5685 | build_string (msdos_stdcolor_name (face->background)); | |
5686 | } | |
5687 | } | |
44747bd0 EZ |
5688 | |
5689 | /* Swap colors if face is inverse-video. */ | |
5690 | if (face->tty_reverse_p) | |
5691 | { | |
5692 | unsigned long tem = face->foreground; | |
5693 | ||
5694 | face->foreground = face->background; | |
5695 | face->background = tem; | |
5696 | } | |
5697 | #endif | |
5698 | ||
82641697 | 5699 | return face; |
729425b1 | 5700 | } |
867dd159 | 5701 | |
82641697 GM |
5702 | |
5703 | DEFUN ("face-register-tty-color", Fface_register_tty_color, | |
5704 | Sface_register_tty_color, 2, 2, 0, | |
5705 | "Say that COLOR is color number NUMBER on the terminal.\n\ | |
5706 | COLOR is a string, the color name. Value is COLOR.") | |
5707 | (color, number) | |
5708 | Lisp_Object color, number; | |
7b7739b1 | 5709 | { |
82641697 GM |
5710 | Lisp_Object entry; |
5711 | ||
5712 | CHECK_STRING (color, 0); | |
5713 | CHECK_NUMBER (number, 1); | |
5714 | entry = Fassoc (color, Vface_tty_color_alist); | |
5715 | if (NILP (entry)) | |
5716 | Vface_tty_color_alist = Fcons (Fcons (color, number), | |
5717 | Vface_tty_color_alist); | |
5718 | else | |
5719 | Fsetcdr (entry, number); | |
5720 | return color; | |
7b7739b1 JB |
5721 | } |
5722 | ||
867dd159 | 5723 | |
82641697 GM |
5724 | DEFUN ("face-clear-tty-colors", Fface_clear_tty_colors, |
5725 | Sface_clear_tty_colors, 0, 0, 0, | |
5726 | "Unregister all registered tty colors.") | |
5727 | () | |
660ed669 | 5728 | { |
82641697 | 5729 | return Vface_tty_color_alist = Qnil; |
660ed669 JB |
5730 | } |
5731 | ||
867dd159 | 5732 | |
82641697 GM |
5733 | DEFUN ("tty-defined-colors", Ftty_defined_colors, |
5734 | Stty_defined_colors, 0, 0, 0, | |
5735 | "Return a list of registered tty colors.") | |
5736 | () | |
867dd159 | 5737 | { |
82641697 | 5738 | Lisp_Object list, colors; |
867dd159 | 5739 | |
82641697 GM |
5740 | colors = Qnil; |
5741 | for (list = Vface_tty_color_alist; CONSP (list); list = XCDR (list)) | |
5742 | colors = Fcons (XCAR (XCAR (list)), colors); | |
867dd159 | 5743 | |
82641697 | 5744 | return colors; |
867dd159 | 5745 | } |
2e16580f | 5746 | |
82641697 GM |
5747 | |
5748 | \f | |
5749 | /*********************************************************************** | |
5750 | Computing Faces | |
5751 | ***********************************************************************/ | |
5752 | ||
5753 | /* Return the ID of the face to use to display character CH with face | |
5754 | property PROP on frame F in current_buffer. */ | |
2e16580f RS |
5755 | |
5756 | int | |
82641697 | 5757 | compute_char_face (f, ch, prop) |
2e16580f | 5758 | struct frame *f; |
82641697 GM |
5759 | int ch; |
5760 | Lisp_Object prop; | |
2e16580f | 5761 | { |
82641697 GM |
5762 | int face_id; |
5763 | int charset = (NILP (current_buffer->enable_multibyte_characters) | |
5764 | ? -1 | |
5765 | : CHAR_CHARSET (ch)); | |
5766 | ||
5767 | if (NILP (prop)) | |
5768 | face_id = FACE_FOR_CHARSET (f, DEFAULT_FACE_ID, charset); | |
5769 | else | |
2e16580f | 5770 | { |
82641697 GM |
5771 | Lisp_Object attrs[LFACE_VECTOR_SIZE]; |
5772 | struct face *default_face = FACE_FROM_ID (f, DEFAULT_FACE_ID); | |
5773 | bcopy (default_face->lface, attrs, sizeof attrs); | |
5774 | merge_face_vector_with_property (f, attrs, prop); | |
5775 | face_id = lookup_face (f, attrs, charset); | |
2e16580f RS |
5776 | } |
5777 | ||
82641697 | 5778 | return face_id; |
2e16580f | 5779 | } |
bc0db68d | 5780 | |
b349f4fb | 5781 | |
82641697 GM |
5782 | /* Return the face ID associated with buffer position POS for |
5783 | displaying ASCII characters. Return in *ENDPTR the position at | |
5784 | which a different face is needed, as far as text properties and | |
5785 | overlays are concerned. W is a window displaying current_buffer. | |
5786 | ||
5787 | REGION_BEG, REGION_END delimit the region, so it can be | |
5788 | highlighted. | |
6f134486 | 5789 | |
82641697 GM |
5790 | LIMIT is a position not to scan beyond. That is to limit the time |
5791 | this function can take. | |
5792 | ||
5793 | If MOUSE is non-zero, use the character's mouse-face, not its face. | |
5794 | ||
5795 | The face returned is suitable for displaying CHARSET_ASCII if | |
5796 | current_buffer->enable_multibyte_characters is non-nil. Otherwise, | |
5797 | the face is suitable for displaying unibyte text. */ | |
bc0db68d | 5798 | |
cb637678 | 5799 | int |
82641697 GM |
5800 | face_at_buffer_position (w, pos, region_beg, region_end, |
5801 | endptr, limit, mouse) | |
f211082d | 5802 | struct window *w; |
7b7739b1 | 5803 | int pos; |
bc0db68d | 5804 | int region_beg, region_end; |
7b7739b1 | 5805 | int *endptr; |
b349f4fb | 5806 | int limit; |
6f134486 | 5807 | int mouse; |
7b7739b1 | 5808 | { |
82641697 GM |
5809 | struct frame *f = XFRAME (w->frame); |
5810 | Lisp_Object attrs[LFACE_VECTOR_SIZE]; | |
b6d40e46 | 5811 | Lisp_Object prop, position; |
82641697 | 5812 | int i, noverlays; |
7b7739b1 | 5813 | Lisp_Object *overlay_vec; |
f211082d | 5814 | Lisp_Object frame; |
f6b98e0b | 5815 | int endpos; |
82641697 GM |
5816 | Lisp_Object propname = mouse ? Qmouse_face : Qface; |
5817 | Lisp_Object limit1, end; | |
5818 | struct face *default_face; | |
5819 | int multibyte_p = !NILP (current_buffer->enable_multibyte_characters); | |
f6b98e0b JB |
5820 | |
5821 | /* W must display the current buffer. We could write this function | |
5822 | to use the frame and buffer of W, but right now it doesn't. */ | |
82641697 | 5823 | xassert (XBUFFER (w->buffer) == current_buffer); |
f211082d | 5824 | |
ac22a6c4 | 5825 | XSETFRAME (frame, f); |
82641697 | 5826 | XSETFASTINT (position, pos); |
7b7739b1 | 5827 | |
f6b98e0b | 5828 | endpos = ZV; |
bc0db68d RS |
5829 | if (pos < region_beg && region_beg < endpos) |
5830 | endpos = region_beg; | |
f6b98e0b | 5831 | |
82641697 GM |
5832 | /* Get the `face' or `mouse_face' text property at POS, and |
5833 | determine the next position at which the property changes. */ | |
6f134486 | 5834 | prop = Fget_text_property (position, propname, w->buffer); |
82641697 GM |
5835 | XSETFASTINT (limit1, (limit < endpos ? limit : endpos)); |
5836 | end = Fnext_single_property_change (position, propname, w->buffer, limit1); | |
5837 | if (INTEGERP (end)) | |
5838 | endpos = XINT (end); | |
6f134486 | 5839 | |
82641697 | 5840 | /* Look at properties from overlays. */ |
b6d40e46 | 5841 | { |
f6b98e0b | 5842 | int next_overlay; |
9516fe94 RS |
5843 | int len; |
5844 | ||
5845 | /* First try with room for 40 overlays. */ | |
5846 | len = 40; | |
5847 | overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); | |
7af31819 | 5848 | noverlays = overlays_at (pos, 0, &overlay_vec, &len, |
82641697 | 5849 | &next_overlay, NULL); |
9516fe94 | 5850 | |
82641697 GM |
5851 | /* If there are more than 40, make enough space for all, and try |
5852 | again. */ | |
9516fe94 RS |
5853 | if (noverlays > len) |
5854 | { | |
5855 | len = noverlays; | |
5856 | overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); | |
82277c2f | 5857 | noverlays = overlays_at (pos, 0, &overlay_vec, &len, |
82641697 | 5858 | &next_overlay, NULL); |
9516fe94 | 5859 | } |
b6d40e46 | 5860 | |
f6b98e0b JB |
5861 | if (next_overlay < endpos) |
5862 | endpos = next_overlay; | |
b6d40e46 JB |
5863 | } |
5864 | ||
5865 | *endptr = endpos; | |
7b7739b1 | 5866 | |
82641697 GM |
5867 | default_face = FACE_FROM_ID (f, DEFAULT_FACE_ID); |
5868 | ||
5869 | /* Optimize common cases where we can use the default face. */ | |
5870 | if (noverlays == 0 | |
5871 | && NILP (prop) | |
5872 | && !(pos >= region_beg && pos < region_end) | |
5873 | && (multibyte_p | |
5874 | || !FRAME_WINDOW_P (f) | |
5875 | || FACE_SUITABLE_FOR_CHARSET_P (default_face, -1))) | |
5876 | return DEFAULT_FACE_ID; | |
5877 | ||
5878 | /* Begin with attributes from the default face. */ | |
5879 | bcopy (default_face->lface, attrs, sizeof attrs); | |
5880 | ||
5881 | /* Merge in attributes specified via text properties. */ | |
5882 | if (!NILP (prop)) | |
5883 | merge_face_vector_with_property (f, attrs, prop); | |
5884 | ||
5885 | /* Now merge the overlay data. */ | |
18195655 | 5886 | noverlays = sort_overlays (overlay_vec, noverlays, w); |
18195655 | 5887 | for (i = 0; i < noverlays; i++) |
4699e6d2 | 5888 | { |
18195655 RS |
5889 | Lisp_Object oend; |
5890 | int oendpos; | |
5891 | ||
5892 | prop = Foverlay_get (overlay_vec[i], propname); | |
82641697 GM |
5893 | if (!NILP (prop)) |
5894 | merge_face_vector_with_property (f, attrs, prop); | |
18195655 RS |
5895 | |
5896 | oend = OVERLAY_END (overlay_vec[i]); | |
5897 | oendpos = OVERLAY_POSITION (oend); | |
5898 | if (oendpos < endpos) | |
5899 | endpos = oendpos; | |
5900 | } | |
5901 | ||
82641697 | 5902 | /* If in the region, merge in the region face. */ |
18195655 RS |
5903 | if (pos >= region_beg && pos < region_end) |
5904 | { | |
82641697 GM |
5905 | Lisp_Object region_face = lface_from_face_name (f, Qregion, 0); |
5906 | merge_face_vectors (XVECTOR (region_face)->contents, attrs); | |
5907 | ||
18195655 RS |
5908 | if (region_end < endpos) |
5909 | endpos = region_end; | |
18195655 RS |
5910 | } |
5911 | ||
5912 | *endptr = endpos; | |
5913 | ||
82641697 GM |
5914 | /* Look up a realized face with the given face attributes, |
5915 | or realize a new one. Charset is ignored for tty frames. */ | |
5916 | return lookup_face (f, attrs, multibyte_p ? CHARSET_ASCII : -1); | |
18195655 RS |
5917 | } |
5918 | ||
60573a90 | 5919 | |
82641697 GM |
5920 | /* Compute the face at character position POS in Lisp string STRING on |
5921 | window W, for charset CHARSET_ASCII. | |
7b7739b1 | 5922 | |
82641697 GM |
5923 | If STRING is an overlay string, it comes from position BUFPOS in |
5924 | current_buffer, otherwise BUFPOS is zero to indicate that STRING is | |
5925 | not an overlay string. W must display the current buffer. | |
5926 | REGION_BEG and REGION_END give the start and end positions of the | |
5927 | region; both are -1 if no region is visible. BASE_FACE_ID is the | |
5928 | id of the basic face to merge with. It is usually equal to | |
5929 | DEFAULT_FACE_ID but can be MODE_LINE_FACE_ID or TOP_LINE_FACE_ID | |
5930 | for strings displayed in the mode or top line. | |
5931 | ||
5932 | Set *ENDPTR to the next position where to check for faces in | |
5933 | STRING; -1 if the face is constant from POS to the end of the | |
5934 | string. | |
18195655 | 5935 | |
82641697 GM |
5936 | Value is the id of the face to use. The face returned is suitable |
5937 | for displaying CHARSET_ASCII if STRING is multibyte. Otherwise, | |
5938 | the face is suitable for displaying unibyte text. */ | |
fffc2367 | 5939 | |
82641697 GM |
5940 | int |
5941 | face_at_string_position (w, string, pos, bufpos, region_beg, | |
5942 | region_end, endptr, base_face_id) | |
5943 | struct window *w; | |
5944 | Lisp_Object string; | |
5945 | int pos, bufpos; | |
5946 | int region_beg, region_end; | |
5947 | int *endptr; | |
5948 | enum face_id base_face_id; | |
660ed669 | 5949 | { |
82641697 GM |
5950 | Lisp_Object prop, position, end, limit; |
5951 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
5952 | Lisp_Object attrs[LFACE_VECTOR_SIZE]; | |
5953 | struct face *base_face; | |
5954 | int multibyte_p = STRING_MULTIBYTE (string); | |
5955 | ||
5956 | /* Get the value of the face property at the current position within | |
5957 | STRING. Value is nil if there is no face property. */ | |
5958 | XSETFASTINT (position, pos); | |
5959 | prop = Fget_text_property (position, Qface, string); | |
5960 | ||
5961 | /* Get the next position at which to check for faces. Value of end | |
5962 | is nil if face is constant all the way to the end of the string. | |
5963 | Otherwise it is a string position where to check faces next. | |
5964 | Limit is the maximum position up to which to check for property | |
5965 | changes in Fnext_single_property_change. Strings are usually | |
5966 | short, so set the limit to the end of the string. */ | |
5967 | XSETFASTINT (limit, XSTRING (string)->size); | |
5968 | end = Fnext_single_property_change (position, Qface, string, limit); | |
5969 | if (INTEGERP (end)) | |
5970 | *endptr = XFASTINT (end); | |
5971 | else | |
5972 | *endptr = -1; | |
5973 | ||
5974 | base_face = FACE_FROM_ID (f, base_face_id); | |
5975 | xassert (base_face); | |
5976 | ||
5977 | /* Optimize the default case that there is no face property and we | |
5978 | are not in the region. */ | |
5979 | if (NILP (prop) | |
5980 | && (base_face_id != DEFAULT_FACE_ID | |
5981 | /* BUFPOS <= 0 means STRING is not an overlay string, so | |
5982 | that the region doesn't have to be taken into account. */ | |
5983 | || bufpos <= 0 | |
5984 | || bufpos < region_beg | |
5985 | || bufpos >= region_end) | |
5986 | && (multibyte_p | |
5987 | /* We can't realize faces for different charsets differently | |
5988 | if we don't have fonts, so we can stop here if not working | |
5989 | on a window-system frame. */ | |
5990 | || !FRAME_WINDOW_P (f) | |
5991 | || FACE_SUITABLE_FOR_CHARSET_P (base_face, -1))) | |
5992 | return base_face->id; | |
5993 | ||
5994 | /* Begin with attributes from the base face. */ | |
5995 | bcopy (base_face->lface, attrs, sizeof attrs); | |
5996 | ||
5997 | /* Merge in attributes specified via text properties. */ | |
5998 | if (!NILP (prop)) | |
5999 | merge_face_vector_with_property (f, attrs, prop); | |
6000 | ||
6001 | /* If in the region, merge in the region face. */ | |
6002 | if (bufpos | |
6003 | && bufpos >= region_beg | |
6004 | && bufpos < region_end) | |
a8517066 | 6005 | { |
82641697 GM |
6006 | Lisp_Object region_face = lface_from_face_name (f, Qregion, 0); |
6007 | merge_face_vectors (XVECTOR (region_face)->contents, attrs); | |
a8517066 | 6008 | } |
660ed669 | 6009 | |
82641697 GM |
6010 | /* Look up a realized face with the given face attributes, |
6011 | or realize a new one. */ | |
6012 | return lookup_face (f, attrs, multibyte_p ? CHARSET_ASCII : -1); | |
660ed669 JB |
6013 | } |
6014 | ||
6015 | ||
c115973b | 6016 | \f |
82641697 GM |
6017 | /*********************************************************************** |
6018 | Tests | |
6019 | ***********************************************************************/ | |
c115973b | 6020 | |
82641697 | 6021 | #if GLYPH_DEBUG |
c115973b | 6022 | |
82641697 | 6023 | /* Print the contents of the realized face FACE to stderr. */ |
c115973b | 6024 | |
82641697 GM |
6025 | static void |
6026 | dump_realized_face (face) | |
6027 | struct face *face; | |
6028 | { | |
6029 | fprintf (stderr, "ID: %d\n", face->id); | |
6030 | #ifdef HAVE_X_WINDOWS | |
6031 | fprintf (stderr, "gc: %d\n", (int) face->gc); | |
6032 | #endif | |
6033 | fprintf (stderr, "foreground: 0x%lx (%s)\n", | |
6034 | face->foreground, | |
6035 | XSTRING (face->lface[LFACE_FOREGROUND_INDEX])->data); | |
6036 | fprintf (stderr, "background: 0x%lx (%s)\n", | |
6037 | face->background, | |
6038 | XSTRING (face->lface[LFACE_BACKGROUND_INDEX])->data); | |
6039 | fprintf (stderr, "font_name: %s (%s)\n", | |
6040 | face->font_name, | |
6041 | XSTRING (face->lface[LFACE_FAMILY_INDEX])->data); | |
6042 | #ifdef HAVE_X_WINDOWS | |
6043 | fprintf (stderr, "font = %p\n", face->font); | |
6044 | #endif | |
6045 | fprintf (stderr, "font_info_id = %d\n", face->font_info_id); | |
6046 | fprintf (stderr, "fontset: %d\n", face->fontset); | |
6047 | fprintf (stderr, "underline: %d (%s)\n", | |
6048 | face->underline_p, | |
6049 | XSTRING (Fsymbol_name (face->lface[LFACE_UNDERLINE_INDEX]))->data); | |
6050 | fprintf (stderr, "hash: %d\n", face->hash); | |
6051 | fprintf (stderr, "charset: %d\n", face->charset); | |
c115973b JB |
6052 | } |
6053 | ||
6054 | ||
82641697 GM |
6055 | DEFUN ("dump-face", Fdump_face, Sdump_face, 0, 1, 0, "") |
6056 | (n) | |
6057 | Lisp_Object n; | |
c115973b | 6058 | { |
82641697 | 6059 | if (NILP (n)) |
c115973b | 6060 | { |
82641697 GM |
6061 | int i; |
6062 | ||
6063 | fprintf (stderr, "font selection order: "); | |
6064 | for (i = 0; i < DIM (font_sort_order); ++i) | |
6065 | fprintf (stderr, "%d ", font_sort_order[i]); | |
6066 | fprintf (stderr, "\n"); | |
6067 | ||
6068 | fprintf (stderr, "alternative fonts: "); | |
6069 | debug_print (Vface_alternative_font_family_alist); | |
6070 | fprintf (stderr, "\n"); | |
6071 | ||
6072 | for (i = 0; i < FRAME_FACE_CACHE (selected_frame)->used; ++i) | |
6073 | Fdump_face (make_number (i)); | |
c115973b JB |
6074 | } |
6075 | else | |
f5e278c7 | 6076 | { |
82641697 GM |
6077 | struct face *face; |
6078 | CHECK_NUMBER (n, 0); | |
6079 | face = FACE_FROM_ID (selected_frame, XINT (n)); | |
6080 | if (face == NULL) | |
6081 | error ("Not a valid face"); | |
6082 | dump_realized_face (face); | |
f5e278c7 | 6083 | } |
82641697 | 6084 | |
c115973b JB |
6085 | return Qnil; |
6086 | } | |
b5c53576 | 6087 | |
b5c53576 | 6088 | |
82641697 GM |
6089 | DEFUN ("show-face-resources", Fshow_face_resources, Sshow_face_resources, |
6090 | 0, 0, 0, "") | |
6091 | () | |
b5c53576 | 6092 | { |
82641697 GM |
6093 | fprintf (stderr, "number of colors = %d\n", ncolors_allocated); |
6094 | fprintf (stderr, "number of pixmaps = %d\n", npixmaps_allocated); | |
6095 | fprintf (stderr, "number of GCs = %d\n", ngcs); | |
6096 | return Qnil; | |
b5c53576 RS |
6097 | } |
6098 | ||
82641697 GM |
6099 | #endif /* GLYPH_DEBUG != 0 */ |
6100 | ||
b5c53576 | 6101 | |
c115973b | 6102 | \f |
82641697 GM |
6103 | /*********************************************************************** |
6104 | Initialization | |
6105 | ***********************************************************************/ | |
cb637678 | 6106 | |
c115973b | 6107 | void |
f211082d | 6108 | syms_of_xfaces () |
c115973b | 6109 | { |
f211082d JB |
6110 | Qface = intern ("face"); |
6111 | staticpro (&Qface); | |
cd0bb842 RS |
6112 | Qpixmap_spec_p = intern ("pixmap-spec-p"); |
6113 | staticpro (&Qpixmap_spec_p); | |
f211082d | 6114 | |
82641697 GM |
6115 | /* Lisp face attribute keywords. */ |
6116 | QCfamily = intern (":family"); | |
6117 | staticpro (&QCfamily); | |
6118 | QCheight = intern (":height"); | |
6119 | staticpro (&QCheight); | |
6120 | QCweight = intern (":weight"); | |
6121 | staticpro (&QCweight); | |
6122 | QCslant = intern (":slant"); | |
6123 | staticpro (&QCslant); | |
6124 | QCunderline = intern (":underline"); | |
6125 | staticpro (&QCunderline); | |
6126 | QCinverse_video = intern (":inverse-video"); | |
6127 | staticpro (&QCinverse_video); | |
6128 | QCreverse_video = intern (":reverse-video"); | |
6129 | staticpro (&QCreverse_video); | |
6130 | QCforeground = intern (":foreground"); | |
6131 | staticpro (&QCforeground); | |
6132 | QCbackground = intern (":background"); | |
6133 | staticpro (&QCbackground); | |
6134 | QCstipple = intern (":stipple");; | |
6135 | staticpro (&QCstipple); | |
6136 | QCwidth = intern (":width"); | |
6137 | staticpro (&QCwidth); | |
6138 | QCfont = intern (":font"); | |
6139 | staticpro (&QCfont); | |
6140 | QCbold = intern (":bold"); | |
6141 | staticpro (&QCbold); | |
6142 | QCitalic = intern (":italic"); | |
6143 | staticpro (&QCitalic); | |
6144 | QCoverline = intern (":overline"); | |
6145 | staticpro (&QCoverline); | |
6146 | QCstrike_through = intern (":strike-through"); | |
6147 | staticpro (&QCstrike_through); | |
6148 | QCbox = intern (":box"); | |
6149 | staticpro (&QCbox); | |
6150 | ||
6151 | /* Symbols used for Lisp face attribute values. */ | |
6152 | QCcolor = intern (":color"); | |
6153 | staticpro (&QCcolor); | |
6154 | QCline_width = intern (":line-width"); | |
6155 | staticpro (&QCline_width); | |
6156 | QCstyle = intern (":style"); | |
6157 | staticpro (&QCstyle); | |
6158 | Qreleased_button = intern ("released-button"); | |
6159 | staticpro (&Qreleased_button); | |
6160 | Qpressed_button = intern ("pressed-button"); | |
6161 | staticpro (&Qpressed_button); | |
6162 | Qnormal = intern ("normal"); | |
6163 | staticpro (&Qnormal); | |
6164 | Qultra_light = intern ("ultra-light"); | |
6165 | staticpro (&Qultra_light); | |
6166 | Qextra_light = intern ("extra-light"); | |
6167 | staticpro (&Qextra_light); | |
6168 | Qlight = intern ("light"); | |
6169 | staticpro (&Qlight); | |
6170 | Qsemi_light = intern ("semi-light"); | |
6171 | staticpro (&Qsemi_light); | |
6172 | Qsemi_bold = intern ("semi-bold"); | |
6173 | staticpro (&Qsemi_bold); | |
6174 | Qbold = intern ("bold"); | |
6175 | staticpro (&Qbold); | |
6176 | Qextra_bold = intern ("extra-bold"); | |
6177 | staticpro (&Qextra_bold); | |
6178 | Qultra_bold = intern ("ultra-bold"); | |
6179 | staticpro (&Qultra_bold); | |
6180 | Qoblique = intern ("oblique"); | |
6181 | staticpro (&Qoblique); | |
6182 | Qitalic = intern ("italic"); | |
6183 | staticpro (&Qitalic); | |
6184 | Qreverse_oblique = intern ("reverse-oblique"); | |
6185 | staticpro (&Qreverse_oblique); | |
6186 | Qreverse_italic = intern ("reverse-italic"); | |
6187 | staticpro (&Qreverse_italic); | |
6188 | Qultra_condensed = intern ("ultra-condensed"); | |
6189 | staticpro (&Qultra_condensed); | |
6190 | Qextra_condensed = intern ("extra-condensed"); | |
6191 | staticpro (&Qextra_condensed); | |
6192 | Qcondensed = intern ("condensed"); | |
6193 | staticpro (&Qcondensed); | |
6194 | Qsemi_condensed = intern ("semi-condensed"); | |
6195 | staticpro (&Qsemi_condensed); | |
6196 | Qsemi_expanded = intern ("semi-expanded"); | |
6197 | staticpro (&Qsemi_expanded); | |
6198 | Qexpanded = intern ("expanded"); | |
6199 | staticpro (&Qexpanded); | |
6200 | Qextra_expanded = intern ("extra-expanded"); | |
6201 | staticpro (&Qextra_expanded); | |
6202 | Qultra_expanded = intern ("ultra-expanded"); | |
6203 | staticpro (&Qultra_expanded); | |
6204 | Qbackground_color = intern ("background-color"); | |
6205 | staticpro (&Qbackground_color); | |
6206 | Qforeground_color = intern ("foreground-color"); | |
6207 | staticpro (&Qforeground_color); | |
6208 | Qunspecified = intern ("unspecified"); | |
6209 | staticpro (&Qunspecified); | |
6210 | ||
6211 | Qx_charset_registry = intern ("x-charset-registry"); | |
6212 | staticpro (&Qx_charset_registry); | |
6213 | Qdefault = intern ("default"); | |
6214 | staticpro (&Qdefault); | |
6215 | Qmodeline = intern ("modeline"); | |
6216 | staticpro (&Qmodeline); | |
6217 | Qtoolbar = intern ("toolbar"); | |
6218 | staticpro (&Qtoolbar); | |
6219 | Qregion = intern ("region"); | |
6220 | staticpro (&Qregion); | |
6221 | Qbitmap_area = intern ("bitmap-area"); | |
6222 | staticpro (&Qbitmap_area); | |
6223 | Qtop_line = intern ("top-line"); | |
6224 | staticpro (&Qtop_line); | |
6225 | ||
6226 | defsubr (&Sinternal_make_lisp_face); | |
6227 | defsubr (&Sinternal_lisp_face_p); | |
6228 | defsubr (&Sinternal_set_lisp_face_attribute); | |
6229 | #ifdef HAVE_X_WINDOWS | |
6230 | defsubr (&Sinternal_set_lisp_face_attribute_from_resource); | |
6231 | defsubr (&Sface_color_gray_p); | |
6232 | defsubr (&Sface_color_supported_p); | |
6233 | #endif | |
6234 | defsubr (&Sinternal_get_lisp_face_attribute); | |
6235 | defsubr (&Sinternal_lisp_face_attribute_values); | |
6236 | defsubr (&Sinternal_lisp_face_equal_p); | |
6237 | defsubr (&Sinternal_lisp_face_empty_p); | |
6238 | defsubr (&Sinternal_copy_lisp_face); | |
6239 | defsubr (&Sinternal_merge_in_global_face); | |
6240 | defsubr (&Sface_font); | |
6241 | defsubr (&Sframe_face_alist); | |
6242 | defsubr (&Sinternal_set_font_selection_order); | |
6243 | defsubr (&Sinternal_set_alternative_font_family_alist); | |
6244 | #if GLYPH_DEBUG | |
6245 | defsubr (&Sdump_face); | |
6246 | defsubr (&Sshow_face_resources); | |
6247 | #endif /* GLYPH_DEBUG */ | |
6248 | defsubr (&Sclear_face_cache); | |
6249 | ||
6250 | DEFVAR_LISP ("face-new-frame-defaults", &Vface_new_frame_defaults, | |
6251 | "List of global face definitions (for internal use only.)"); | |
6252 | Vface_new_frame_defaults = Qnil; | |
6253 | ||
6254 | DEFVAR_LISP ("face-default-stipple", &Vface_default_stipple, | |
6255 | "*Default stipple pattern used on monochrome displays.\n\ | |
6256 | This stipple pattern is used on monochrome displays\n\ | |
6257 | instead of shades of gray for a face background color.\n\ | |
6258 | See `set-face-stipple' for possible values for this variable."); | |
6259 | Vface_default_stipple = build_string ("gray3"); | |
6260 | ||
6261 | DEFVAR_LISP ("face-default-registry", &Vface_default_registry, | |
6262 | "Default registry and encoding to use.\n\ | |
6263 | This registry and encoding is used for unibyte text. It is set up\n\ | |
6264 | from the specified frame font when Emacs starts. (For internal use only.)"); | |
6265 | Vface_default_registry = Qnil; | |
6266 | ||
6267 | DEFVAR_LISP ("face-alternative-font-family-alist", | |
6268 | &Vface_alternative_font_family_alist, ""); | |
6269 | Vface_alternative_font_family_alist = Qnil; | |
6270 | ||
6271 | #if SCALABLE_FONTS | |
6272 | ||
6273 | DEFVAR_LISP ("scalable-fonts-allowed", &Vscalable_fonts_allowed, | |
6274 | "Allowed scalable fonts.\n\ | |
6275 | A value of nil means don't allow any scalable fonts.\n\ | |
6276 | A value of t means allow any scalable font.\n\ | |
6277 | Otherwise, value must be a list of regular expressions. A font may be\n\ | |
6278 | scaled if its name matches a regular expression in the list."); | |
6279 | Vscalable_fonts_allowed = Qnil; | |
6280 | ||
6281 | #endif /* SCALABLE_FONTS */ | |
b5c53576 | 6282 | |
87485d6f | 6283 | #ifdef HAVE_X_WINDOWS |
cd0bb842 | 6284 | defsubr (&Spixmap_spec_p); |
82641697 GM |
6285 | defsubr (&Sx_list_fonts); |
6286 | defsubr (&Sinternal_face_x_get_resource); | |
6287 | defsubr (&Sx_font_list); | |
6288 | defsubr (&Sx_font_family_list); | |
6289 | #endif /* HAVE_X_WINDOWS */ | |
b5c53576 | 6290 | |
82641697 GM |
6291 | /* TTY face support. */ |
6292 | defsubr (&Sface_register_tty_color); | |
6293 | defsubr (&Sface_clear_tty_colors); | |
6294 | defsubr (&Stty_defined_colors); | |
6295 | Vface_tty_color_alist = Qnil; | |
6296 | staticpro (&Vface_tty_color_alist); | |
c115973b | 6297 | } |