Commit | Line | Data |
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cb637678 | 1 | /* "Face" primitives. |
3a22ee35 | 2 | Copyright (C) 1993, 1994 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 | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
357f32fc | 20 | /* This is derived from work by Lucid (some parts very loosely so). */ |
7b7739b1 | 21 | |
c115973b JB |
22 | #include <sys/types.h> |
23 | #include <sys/stat.h> | |
24 | ||
18160b98 | 25 | #include <config.h> |
c115973b JB |
26 | #include "lisp.h" |
27 | ||
cb637678 JB |
28 | #ifdef HAVE_X_WINDOWS |
29 | ||
c115973b JB |
30 | #include "xterm.h" |
31 | #include "buffer.h" | |
f211082d | 32 | #include "dispextern.h" |
7b7739b1 | 33 | #include "frame.h" |
357f32fc | 34 | #include "blockinput.h" |
b6d40e46 | 35 | #include "window.h" |
c115973b | 36 | |
657070ac JB |
37 | /* Compensate for bug in Xos.h on some systems, on which it requires |
38 | time.h. On some such systems, Xos.h tries to redefine struct | |
39 | timeval and struct timezone if USG is #defined while it is | |
40 | #included. */ | |
6233db35 | 41 | #ifdef XOS_NEEDS_TIME_H |
657070ac | 42 | |
e11d186d | 43 | #include <time.h> |
657070ac JB |
44 | #undef USG |
45 | #include <X11/Xos.h> | |
46 | #define USG | |
e11d186d | 47 | #define __TIMEVAL__ |
e11d186d | 48 | |
657070ac | 49 | #else |
7a4d2269 | 50 | |
c115973b JB |
51 | #include <X11/Xos.h> |
52 | ||
657070ac JB |
53 | #endif |
54 | ||
cb637678 JB |
55 | \f |
56 | /* An explanation of the face data structures. */ | |
57 | ||
58 | /* ========================= Face Data Structures ========================= | |
59 | ||
7b00de84 | 60 | Let FACE-NAME be a symbol naming a face. |
cb637678 | 61 | |
7b00de84 JB |
62 | Let FACE-VECTOR be (assq FACE-NAME (frame-face-alist FRAME)) |
63 | FACE-VECTOR is either nil, or a vector of the form | |
cb637678 JB |
64 | [face NAME ID FONT FOREGROUND BACKGROUND BACKGROUND-PIXMAP UNDERLINE-P] |
65 | where | |
66 | face is the symbol `face', | |
67 | NAME is the symbol with which this vector is associated (a backpointer), | |
68 | ID is the face ID, an integer used internally by the C code to identify | |
69 | the face, | |
70 | FONT, FOREGROUND, and BACKGROUND are strings naming the fonts and colors | |
71 | to use with the face, | |
72 | BACKGROUND-PIXMAP is the name of an x bitmap filename, which we don't | |
73 | use right now, and | |
74 | UNDERLINE-P is non-nil if the face should be underlined. | |
7b00de84 JB |
75 | If any of these elements are nil, that parameter is considered |
76 | unspecified; parameters from faces specified by lower-priority | |
77 | overlays or text properties, or the parameters of the frame itself, | |
78 | can show through. (lisp/faces.el maintains these lists.) | |
79 | ||
80 | (assq FACE-NAME global-face-data) returns a vector describing the | |
81 | global parameters for that face. | |
82 | ||
83 | Let PARAM-FACE be FRAME->display.x->param_faces[Faref (FACE-VECTOR, 2)]. | |
84 | PARAM_FACE is a struct face whose members are the Xlib analogues of | |
85 | the parameters in FACE-VECTOR. If an element of FACE-VECTOR is | |
86 | nil, then the corresponding member of PARAM_FACE is FACE_DEFAULT. | |
87 | These faces are called "parameter faces", because they're the ones | |
88 | lisp manipulates to control what gets displayed. Elements 0 and 1 | |
89 | of FRAME->display.x->param_faces are special - they describe the | |
90 | default and mode line faces. None of the faces in param_faces have | |
91 | GC's. (See src/dispextern.h for the definiton of struct face. | |
92 | lisp/faces.el maintains the isomorphism between face_alist and | |
93 | param_faces.) | |
94 | ||
95 | The functions compute_char_face and compute_glyph_face find and | |
96 | combine the parameter faces associated with overlays and text | |
97 | properties. The resulting faces are called "computed faces"; none | |
98 | of their members are FACE_DEFAULT; they are completely specified. | |
99 | They then call intern_compute_face to search | |
100 | FRAME->display.x->computed_faces for a matching face, add one if | |
101 | none is found, and return the index into | |
102 | FRAME->display.x->computed_faces. FRAME's glyph matrices use these | |
103 | indices to record the faces of the matrix characters, and the X | |
104 | display hooks consult compute_faces to decide how to display these | |
105 | characters. Elements 0 and 1 of computed_faces always describe the | |
106 | default and mode-line faces. | |
107 | ||
108 | Elements 0 and 1 of computed_faces have GC's; all the other faces | |
109 | in computed_faces do not. The global array face_vector contains | |
110 | faces with their GC's set. Given a computed_face, the function | |
111 | intern_face finds (or adds) an element of face_vector with | |
112 | equivalent parameters, and returns a pointer to that face, whose GC | |
113 | can then be used for display. | |
114 | ||
115 | Constraints: | |
116 | ||
117 | Symbols naming faces must have associations on all frames; for any | |
118 | FRAME, for all FACE-NAME, if (assq FACE-NAME (frame-face-alist | |
119 | FRAME)) is non-nil, it must be non-nil for all frames. | |
120 | ||
121 | Analogously, indices into param_faces must be valid on all frames; | |
122 | if param_faces[i] is a non-zero face pointer on one frame, then it | |
123 | must be filled in on all frames. Code assumes that face ID's can | |
124 | be used on any frame. | |
cb637678 JB |
125 | |
126 | Some subtleties: | |
7b7739b1 | 127 | |
7b00de84 JB |
128 | Why do we keep param_faces and computed_faces separate? |
129 | computed_faces contains an element for every combination of facial | |
130 | parameters we have ever displayed. indices into param_faces have | |
131 | to be valid on all frames. If they were the same array, then that | |
132 | array would grow very large on all frames, because any facial | |
133 | combination displayed on any frame would need to be a valid entry | |
134 | on all frames. | |
135 | ||
cb637678 JB |
136 | Since face_vector is just a cache --- there are no pointers into it |
137 | from the rest of the code, and everyone accesses it through | |
138 | intern_face --- we could just free its GC's and throw the whole | |
139 | thing away without breaking anything. This gives us a simple way | |
140 | to garbage-collect old GC's nobody's using any more - we can just | |
141 | purge face_vector, and then let subsequent calls to intern_face | |
142 | refill it as needed. The function clear_face_vector performs this | |
143 | purge. | |
144 | ||
7b00de84 | 145 | We're often applying intern_face to faces in computed_faces - |
cb637678 JB |
146 | for example, we do this while sending GLYPHs from a struct |
147 | frame_glyphs to X during redisplay. It would be nice to avoid | |
148 | searching all of face_vector every time we intern a frame's face. | |
149 | So, when intern_face finds a match for FACE in face_vector, it | |
150 | stores the index of the match in FACE's cached_index member, and | |
151 | checks there first next time. */ | |
152 | ||
153 | \f | |
154 | /* Definitions and declarations. */ | |
155 | ||
c115973b | 156 | /* A table of display faces. */ |
7b00de84 | 157 | static struct face **face_vector; |
c115973b | 158 | /* The length in use of the table. */ |
7b00de84 | 159 | static int nfaces; |
c115973b | 160 | /* The allocated length of the table. */ |
7b00de84 | 161 | static int nfaces_allocated; |
c115973b JB |
162 | |
163 | /* The number of face-id's in use (same for all frames). */ | |
164 | int next_face_id; | |
165 | ||
bc0db68d RS |
166 | /* The number of the face to use to indicate the region. */ |
167 | int region_face; | |
168 | ||
9516fe94 RS |
169 | /* This is what appears in a slot in a face to signify that the face |
170 | does not specify that display aspect. */ | |
7b7739b1 JB |
171 | #define FACE_DEFAULT (~0) |
172 | ||
6f134486 | 173 | Lisp_Object Qface, Qmouse_face; |
f211082d | 174 | |
415445e2 JB |
175 | static void build_face ( /* FRAME_PTR, struct face * */ ); |
176 | int face_name_id_number ( /* FRAME_PTR, Lisp_Object name */ ); | |
cb637678 | 177 | |
415445e2 | 178 | struct face *intern_face ( /* FRAME_PTR, struct face * */ ); |
7b00de84 JB |
179 | static int new_computed_face ( /* FRAME_PTR, struct face * */ ); |
180 | static int intern_computed_face ( /* FRAME_PTR, struct face * */ ); | |
415445e2 | 181 | static void ensure_face_ready ( /* FRAME_PTR, int id */ ); |
254a1b66 | 182 | void recompute_basic_faces ( /* FRAME_PTR f */ ); |
c115973b | 183 | \f |
cb637678 JB |
184 | /* Allocating, copying, and comparing struct faces. */ |
185 | ||
186 | /* Allocate a new face */ | |
187 | static struct face * | |
188 | allocate_face () | |
189 | { | |
190 | struct face *result = (struct face *) xmalloc (sizeof (struct face)); | |
191 | bzero (result, sizeof (struct face)); | |
192 | result->font = (XFontStruct *) FACE_DEFAULT; | |
193 | result->foreground = FACE_DEFAULT; | |
194 | result->background = FACE_DEFAULT; | |
195 | result->stipple = FACE_DEFAULT; | |
196 | return result; | |
197 | } | |
c115973b | 198 | |
cb637678 | 199 | /* Make a new face that's a copy of an existing one. */ |
c115973b JB |
200 | static struct face * |
201 | copy_face (face) | |
202 | struct face *face; | |
203 | { | |
204 | struct face *result = allocate_face (); | |
205 | ||
206 | result->font = face->font; | |
207 | result->foreground = face->foreground; | |
208 | result->background = face->background; | |
f211082d | 209 | result->stipple = face->stipple; |
c115973b JB |
210 | result->underline = face->underline; |
211 | ||
212 | return result; | |
213 | } | |
214 | ||
215 | static int | |
216 | face_eql (face1, face2) | |
217 | struct face *face1, *face2; | |
218 | { | |
cb637678 | 219 | return ( face1->font == face2->font |
c115973b JB |
220 | && face1->foreground == face2->foreground |
221 | && face1->background == face2->background | |
cb637678 JB |
222 | && face1->stipple == face2->stipple |
223 | && face1->underline == face2->underline); | |
c115973b | 224 | } |
cb637678 JB |
225 | \f |
226 | /* Interning faces in the `face_vector' cache, and clearing that cache. */ | |
c115973b JB |
227 | |
228 | /* Return the unique display face corresponding to the user-level face FACE. | |
c115973b JB |
229 | If there isn't one, make one, and find a slot in the face_vector to |
230 | put it in. */ | |
c115973b | 231 | static struct face * |
7b7739b1 | 232 | get_cached_face (f, face) |
c115973b JB |
233 | struct frame *f; |
234 | struct face *face; | |
235 | { | |
236 | int i, empty = -1; | |
f211082d | 237 | struct face *result; |
c115973b | 238 | |
cb637678 JB |
239 | /* Perhaps FACE->cached_index is valid; this could happen if FACE is |
240 | in a frame's face list. */ | |
241 | if (face->cached_index >= 0 | |
242 | && face->cached_index < nfaces | |
243 | && face_eql (face_vector[face->cached_index], face)) | |
244 | return face_vector[face->cached_index]; | |
245 | ||
c115973b JB |
246 | /* Look for an existing display face that does the job. |
247 | Also find an empty slot if any. */ | |
248 | for (i = 0; i < nfaces; i++) | |
249 | { | |
250 | if (face_eql (face_vector[i], face)) | |
90e6242c RS |
251 | { |
252 | face->cached_index = i; | |
253 | return face_vector[i]; | |
254 | } | |
c115973b JB |
255 | if (face_vector[i] == 0) |
256 | empty = i; | |
257 | } | |
258 | ||
259 | /* If no empty slots, make one. */ | |
260 | if (empty < 0 && nfaces == nfaces_allocated) | |
261 | { | |
262 | int newsize = nfaces + 20; | |
263 | face_vector | |
264 | = (struct face **) xrealloc (face_vector, | |
265 | newsize * sizeof (struct face *)); | |
266 | nfaces_allocated = newsize; | |
267 | } | |
268 | ||
269 | if (empty < 0) | |
270 | empty = nfaces++; | |
271 | ||
272 | /* Put a new display face in the empty slot. */ | |
273 | result = copy_face (face); | |
274 | face_vector[empty] = result; | |
275 | ||
276 | /* Make a graphics context for it. */ | |
277 | build_face (f, result); | |
278 | ||
90e6242c | 279 | face->cached_index = empty; |
c115973b JB |
280 | return result; |
281 | } | |
282 | ||
7b00de84 | 283 | /* Given a computed face, return an equivalent display face |
cb637678 JB |
284 | (one which has a graphics context). */ |
285 | ||
286 | struct face * | |
287 | intern_face (f, face) | |
288 | struct frame *f; | |
289 | struct face *face; | |
290 | { | |
cb637678 JB |
291 | /* If it's equivalent to the default face, use that. */ |
292 | if (face_eql (face, FRAME_DEFAULT_FACE (f))) | |
293 | { | |
294 | if (!FRAME_DEFAULT_FACE (f)->gc) | |
295 | build_face (f, FRAME_DEFAULT_FACE (f)); | |
296 | return FRAME_DEFAULT_FACE (f); | |
297 | } | |
298 | ||
299 | /* If it's equivalent to the mode line face, use that. */ | |
300 | if (face_eql (face, FRAME_MODE_LINE_FACE (f))) | |
301 | { | |
302 | if (!FRAME_MODE_LINE_FACE (f)->gc) | |
303 | build_face (f, FRAME_MODE_LINE_FACE (f)); | |
304 | return FRAME_MODE_LINE_FACE (f); | |
305 | } | |
306 | ||
f6b98e0b JB |
307 | /* If it's not one of the frame's default faces, it shouldn't have a GC. */ |
308 | if (face->gc) | |
309 | abort (); | |
310 | ||
cb637678 JB |
311 | /* Get a specialized display face. */ |
312 | return get_cached_face (f, face); | |
313 | } | |
314 | ||
c115973b JB |
315 | /* Clear out face_vector and start anew. |
316 | This should be done from time to time just to avoid | |
317 | keeping too many graphics contexts in face_vector | |
318 | that are no longer needed. */ | |
319 | ||
320 | void | |
321 | clear_face_vector () | |
322 | { | |
323 | Lisp_Object rest; | |
324 | Display *dpy = x_current_display; | |
f211082d | 325 | int i; |
c115973b JB |
326 | |
327 | BLOCK_INPUT; | |
328 | /* Free the display faces in the face_vector. */ | |
329 | for (i = 0; i < nfaces; i++) | |
330 | { | |
331 | struct face *face = face_vector[i]; | |
f211082d JB |
332 | if (face->gc) |
333 | XFreeGC (dpy, face->gc); | |
c115973b JB |
334 | xfree (face); |
335 | } | |
336 | nfaces = 0; | |
337 | ||
338 | UNBLOCK_INPUT; | |
339 | } | |
340 | \f | |
cb637678 JB |
341 | /* Allocating and freeing X resources for display faces. */ |
342 | ||
f211082d JB |
343 | /* Make a graphics context for face FACE, which is on frame F, |
344 | if that can be done. */ | |
c115973b JB |
345 | static void |
346 | build_face (f, face) | |
cb637678 JB |
347 | struct frame *f; |
348 | struct face *face; | |
c115973b JB |
349 | { |
350 | GC gc; | |
351 | XGCValues xgcv; | |
352 | unsigned long mask; | |
353 | ||
660ed669 JB |
354 | BLOCK_INPUT; |
355 | ||
f211082d JB |
356 | if (face->foreground != FACE_DEFAULT) |
357 | xgcv.foreground = face->foreground; | |
358 | else | |
660ed669 JB |
359 | xgcv.foreground = f->display.x->foreground_pixel; |
360 | ||
f211082d JB |
361 | if (face->background != FACE_DEFAULT) |
362 | xgcv.background = face->background; | |
363 | else | |
660ed669 JB |
364 | xgcv.background = f->display.x->background_pixel; |
365 | ||
f211082d JB |
366 | if (face->font && (int) face->font != FACE_DEFAULT) |
367 | xgcv.font = face->font->fid; | |
368 | else | |
369 | xgcv.font = f->display.x->font->fid; | |
660ed669 | 370 | |
c115973b | 371 | xgcv.graphics_exposures = 0; |
660ed669 | 372 | |
c115973b JB |
373 | mask = GCForeground | GCBackground | GCFont | GCGraphicsExposures; |
374 | gc = XCreateGC (x_current_display, FRAME_X_WINDOW (f), | |
375 | mask, &xgcv); | |
660ed669 | 376 | |
c115973b | 377 | #if 0 |
f211082d JB |
378 | if (face->stipple && face->stipple != FACE_DEFAULT) |
379 | XSetStipple (x_current_display, gc, face->stipple); | |
c115973b | 380 | #endif |
660ed669 | 381 | |
f211082d | 382 | face->gc = gc; |
660ed669 JB |
383 | |
384 | UNBLOCK_INPUT; | |
c115973b | 385 | } |
cb637678 JB |
386 | |
387 | /* Allocating, freeing, and duplicating fonts, colors, and pixmaps. */ | |
388 | ||
389 | static XFontStruct * | |
390 | load_font (f, name) | |
391 | struct frame *f; | |
392 | Lisp_Object name; | |
393 | { | |
394 | XFontStruct *font; | |
395 | ||
396 | if (NILP (name)) | |
397 | return (XFontStruct *) FACE_DEFAULT; | |
398 | ||
399 | CHECK_STRING (name, 0); | |
400 | BLOCK_INPUT; | |
401 | font = XLoadQueryFont (x_current_display, (char *) XSTRING (name)->data); | |
402 | UNBLOCK_INPUT; | |
403 | ||
404 | if (! font) | |
405 | Fsignal (Qerror, Fcons (build_string ("undefined font"), | |
406 | Fcons (name, Qnil))); | |
407 | return font; | |
408 | } | |
409 | ||
410 | static void | |
411 | unload_font (f, font) | |
412 | struct frame *f; | |
413 | XFontStruct *font; | |
414 | { | |
415 | if (!font || font == ((XFontStruct *) FACE_DEFAULT)) | |
416 | return; | |
660ed669 JB |
417 | |
418 | BLOCK_INPUT; | |
cb637678 | 419 | XFreeFont (x_current_display, font); |
660ed669 | 420 | UNBLOCK_INPUT; |
cb637678 JB |
421 | } |
422 | ||
423 | static unsigned long | |
424 | load_color (f, name) | |
425 | struct frame *f; | |
426 | Lisp_Object name; | |
427 | { | |
428 | Display *dpy = x_current_display; | |
429 | Colormap cmap; | |
430 | XColor color; | |
431 | int result; | |
432 | ||
433 | if (NILP (name)) | |
434 | return FACE_DEFAULT; | |
435 | ||
436 | cmap = DefaultColormapOfScreen (DefaultScreenOfDisplay (x_current_display)); | |
437 | ||
438 | CHECK_STRING (name, 0); | |
439 | BLOCK_INPUT; | |
440 | result = XParseColor (dpy, cmap, (char *) XSTRING (name)->data, &color); | |
441 | UNBLOCK_INPUT; | |
442 | if (! result) | |
443 | Fsignal (Qerror, Fcons (build_string ("undefined color"), | |
444 | Fcons (name, Qnil))); | |
445 | BLOCK_INPUT; | |
446 | result = XAllocColor (dpy, cmap, &color); | |
447 | UNBLOCK_INPUT; | |
448 | if (! result) | |
449 | Fsignal (Qerror, Fcons (build_string ("X server cannot allocate color"), | |
450 | Fcons (name, Qnil))); | |
451 | return (unsigned long) color.pixel; | |
452 | } | |
453 | ||
454 | static void | |
455 | unload_color (f, pixel) | |
456 | struct frame *f; | |
7a4d2269 | 457 | unsigned long pixel; |
cb637678 | 458 | { |
1d9fd7fe JB |
459 | /* Since faces get built by copying parameters from other faces, the |
460 | allocation counts for the colors get all screwed up. I don't see | |
461 | any solution that will take less than 10 minutes, and it's better | |
462 | to have a color leak than a crash, so I'm just dyking this out. | |
463 | This isn't really a color leak, anyway - if we ask for it again, | |
464 | we'll get the same pixel. */ | |
465 | #if 0 | |
cb637678 JB |
466 | Colormap cmap; |
467 | Display *dpy = x_current_display; | |
32dc0866 JB |
468 | if (pixel == FACE_DEFAULT |
469 | || pixel == BLACK_PIX_DEFAULT | |
470 | || pixel == WHITE_PIX_DEFAULT) | |
cb637678 JB |
471 | return; |
472 | cmap = DefaultColormapOfScreen (DefaultScreenOfDisplay (x_current_display)); | |
473 | BLOCK_INPUT; | |
474 | XFreeColors (dpy, cmap, &pixel, 1, 0); | |
475 | UNBLOCK_INPUT; | |
1d9fd7fe | 476 | #endif |
cb637678 JB |
477 | } |
478 | \f | |
7b00de84 | 479 | /* Managing parameter face arrays for frames. */ |
cb637678 | 480 | |
cb637678 JB |
481 | void |
482 | init_frame_faces (f) | |
660ed669 | 483 | FRAME_PTR f; |
cb637678 JB |
484 | { |
485 | ensure_face_ready (f, 0); | |
cb637678 | 486 | ensure_face_ready (f, 1); |
660ed669 | 487 | |
fffc2367 RS |
488 | FRAME_N_COMPUTED_FACES (f) = 0; |
489 | FRAME_SIZE_COMPUTED_FACES (f) = 0; | |
490 | ||
7b00de84 JB |
491 | new_computed_face (f, FRAME_PARAM_FACES (f)[0]); |
492 | new_computed_face (f, FRAME_PARAM_FACES (f)[1]); | |
660ed669 | 493 | recompute_basic_faces (f); |
7b37f67b | 494 | |
1120eb5e JB |
495 | /* Find another X frame. */ |
496 | { | |
497 | Lisp_Object tail, frame, result; | |
498 | ||
499 | result = Qnil; | |
500 | FOR_EACH_FRAME (tail, frame) | |
501 | if (FRAME_X_P (XFRAME (frame)) | |
502 | && XFRAME (frame) != f) | |
503 | { | |
504 | result = frame; | |
505 | break; | |
506 | } | |
507 | ||
508 | /* If we didn't find any X frames other than f, then we don't need | |
509 | any faces other than 0 and 1, so we're okay. Otherwise, make | |
510 | sure that all faces valid on the selected frame are also valid | |
511 | on this new frame. */ | |
512 | if (FRAMEP (result)) | |
513 | { | |
514 | int i; | |
7b00de84 JB |
515 | int n_faces = FRAME_N_PARAM_FACES (XFRAME (result)); |
516 | struct face **faces = FRAME_PARAM_FACES (XFRAME (result)); | |
1120eb5e JB |
517 | |
518 | for (i = 2; i < n_faces; i++) | |
519 | if (faces[i]) | |
520 | ensure_face_ready (f, i); | |
521 | } | |
522 | } | |
cb637678 JB |
523 | } |
524 | ||
660ed669 | 525 | |
cb637678 JB |
526 | /* Called from Fdelete_frame. */ |
527 | void | |
528 | free_frame_faces (f) | |
529 | struct frame *f; | |
530 | { | |
531 | Display *dpy = x_current_display; | |
532 | int i; | |
533 | ||
660ed669 JB |
534 | BLOCK_INPUT; |
535 | ||
7b00de84 | 536 | for (i = 0; i < FRAME_N_PARAM_FACES (f); i++) |
cb637678 | 537 | { |
7b00de84 | 538 | struct face *face = FRAME_PARAM_FACES (f) [i]; |
660ed669 JB |
539 | if (face) |
540 | { | |
541 | if (face->gc) | |
542 | XFreeGC (dpy, face->gc); | |
7b00de84 JB |
543 | unload_font (f, face->font); |
544 | unload_color (f, face->foreground); | |
545 | unload_color (f, face->background); | |
cb637678 | 546 | #if 0 |
7b00de84 | 547 | unload_pixmap (f, face->stipple); |
cb637678 | 548 | #endif |
660ed669 JB |
549 | xfree (face); |
550 | } | |
cb637678 | 551 | } |
7b00de84 JB |
552 | xfree (FRAME_PARAM_FACES (f)); |
553 | FRAME_PARAM_FACES (f) = 0; | |
554 | FRAME_N_PARAM_FACES (f) = 0; | |
555 | ||
556 | /* All faces in FRAME_COMPUTED_FACES use resources copied from | |
557 | FRAME_PARAM_FACES; we can free them without fuss. */ | |
558 | xfree (FRAME_COMPUTED_FACES (f)); | |
559 | FRAME_COMPUTED_FACES (f) = 0; | |
560 | FRAME_N_COMPUTED_FACES (f) = 0; | |
660ed669 JB |
561 | |
562 | UNBLOCK_INPUT; | |
cb637678 | 563 | } |
c115973b | 564 | \f |
cb637678 JB |
565 | /* Interning faces in a frame's face array. */ |
566 | ||
660ed669 | 567 | static int |
7b00de84 JB |
568 | new_computed_face (f, new_face) |
569 | struct frame *f; | |
570 | struct face *new_face; | |
571 | { | |
572 | int i = FRAME_N_COMPUTED_FACES (f); | |
573 | ||
574 | if (i >= FRAME_SIZE_COMPUTED_FACES (f)) | |
575 | { | |
576 | int new_size = i + 32; | |
577 | ||
578 | FRAME_COMPUTED_FACES (f) | |
fffc2367 RS |
579 | = (struct face **) (FRAME_SIZE_COMPUTED_FACES (f) == 0 |
580 | ? xmalloc (new_size * sizeof (struct face *)) | |
581 | : xrealloc (FRAME_COMPUTED_FACES (f), | |
582 | new_size * sizeof (struct face *))); | |
7b00de84 JB |
583 | FRAME_SIZE_COMPUTED_FACES (f) = new_size; |
584 | } | |
585 | ||
586 | i = FRAME_N_COMPUTED_FACES (f)++; | |
587 | FRAME_COMPUTED_FACES (f)[i] = copy_face (new_face); | |
588 | return i; | |
589 | } | |
590 | ||
591 | ||
592 | /* Find a match for NEW_FACE in a FRAME's computed face array, and add | |
593 | it if we don't find one. */ | |
594 | static int | |
595 | intern_computed_face (f, new_face) | |
596 | struct frame *f; | |
b6d40e46 | 597 | struct face *new_face; |
cb637678 | 598 | { |
7b00de84 | 599 | int len = FRAME_N_COMPUTED_FACES (f); |
cb637678 JB |
600 | int i; |
601 | ||
7b00de84 | 602 | /* Search for a computed face already on F equivalent to FACE. */ |
cb637678 JB |
603 | for (i = 0; i < len; i++) |
604 | { | |
7b00de84 JB |
605 | if (! FRAME_COMPUTED_FACES (f)[i]) |
606 | abort (); | |
607 | if (face_eql (new_face, FRAME_COMPUTED_FACES (f)[i])) | |
cb637678 JB |
608 | return i; |
609 | } | |
610 | ||
611 | /* We didn't find one; add a new one. */ | |
7b00de84 | 612 | return new_computed_face (f, new_face); |
cb637678 JB |
613 | } |
614 | ||
7b00de84 | 615 | /* Make parameter face id ID valid on frame F. */ |
cb637678 JB |
616 | |
617 | static void | |
618 | ensure_face_ready (f, id) | |
619 | struct frame *f; | |
620 | int id; | |
621 | { | |
7b00de84 | 622 | if (FRAME_N_PARAM_FACES (f) <= id) |
cb637678 JB |
623 | { |
624 | int n = id + 10; | |
625 | int i; | |
7b00de84 JB |
626 | if (!FRAME_N_PARAM_FACES (f)) |
627 | FRAME_PARAM_FACES (f) | |
cb637678 JB |
628 | = (struct face **) xmalloc (sizeof (struct face *) * n); |
629 | else | |
7b00de84 JB |
630 | FRAME_PARAM_FACES (f) |
631 | = (struct face **) xrealloc (FRAME_PARAM_FACES (f), | |
cb637678 JB |
632 | sizeof (struct face *) * n); |
633 | ||
7b00de84 JB |
634 | bzero (FRAME_PARAM_FACES (f) + FRAME_N_PARAM_FACES (f), |
635 | (n - FRAME_N_PARAM_FACES (f)) * sizeof (struct face *)); | |
636 | FRAME_N_PARAM_FACES (f) = n; | |
cb637678 JB |
637 | } |
638 | ||
7b00de84 JB |
639 | if (FRAME_PARAM_FACES (f) [id] == 0) |
640 | FRAME_PARAM_FACES (f) [id] = allocate_face (); | |
cb637678 JB |
641 | } |
642 | \f | |
867dd159 RS |
643 | /* Return non-zero if FONT1 and FONT2 have the same width. |
644 | We do not check the height, because we can now deal with | |
645 | different heights. | |
660ed669 | 646 | We assume that they're both character-cell fonts. */ |
867dd159 | 647 | |
660ed669 JB |
648 | int |
649 | same_size_fonts (font1, font2) | |
650 | XFontStruct *font1, *font2; | |
651 | { | |
652 | XCharStruct *bounds1 = &font1->min_bounds; | |
653 | XCharStruct *bounds2 = &font2->min_bounds; | |
654 | ||
46407861 | 655 | return (bounds1->width == bounds2->width); |
660ed669 JB |
656 | } |
657 | ||
729425b1 | 658 | /* Update the line_height of frame F according to the biggest font in |
6717f691 | 659 | any face. Return nonzero if if line_height changes. */ |
729425b1 | 660 | |
6717f691 | 661 | int |
729425b1 RS |
662 | frame_update_line_height (f) |
663 | FRAME_PTR f; | |
664 | { | |
665 | int i; | |
666 | int biggest = FONT_HEIGHT (f->display.x->font); | |
667 | ||
668 | for (i = 0; i < f->display.x->n_param_faces; i++) | |
867dd159 RS |
669 | if (f->display.x->param_faces[i] != 0 |
670 | && f->display.x->param_faces[i]->font != (XFontStruct *) FACE_DEFAULT) | |
729425b1 RS |
671 | { |
672 | int height = FONT_HEIGHT (f->display.x->param_faces[i]->font); | |
673 | if (height > biggest) | |
674 | biggest = height; | |
675 | } | |
676 | ||
677 | if (biggest == f->display.x->line_height) | |
6717f691 | 678 | return 0; |
729425b1 RS |
679 | |
680 | f->display.x->line_height = biggest; | |
6717f691 | 681 | return 1; |
729425b1 | 682 | } |
867dd159 | 683 | \f |
7b7739b1 JB |
684 | /* Modify face TO by copying from FROM all properties which have |
685 | nondefault settings. */ | |
867dd159 | 686 | |
7b7739b1 JB |
687 | static void |
688 | merge_faces (from, to) | |
689 | struct face *from, *to; | |
690 | { | |
867dd159 RS |
691 | /* Only merge the font if it's the same width as the base font. |
692 | Otherwise ignore it, since we can't handle it properly. */ | |
68a97335 | 693 | if (from->font != (XFontStruct *) FACE_DEFAULT |
68a97335 JB |
694 | && same_size_fonts (from->font, to->font)) |
695 | to->font = from->font; | |
7b7739b1 JB |
696 | if (from->foreground != FACE_DEFAULT) |
697 | to->foreground = from->foreground; | |
698 | if (from->background != FACE_DEFAULT) | |
699 | to->background = from->background; | |
f211082d JB |
700 | if (from->stipple != FACE_DEFAULT) |
701 | to->stipple = from->stipple; | |
7b7739b1 JB |
702 | if (from->underline) |
703 | to->underline = from->underline; | |
704 | } | |
705 | ||
660ed669 JB |
706 | /* Set up the basic set of facial parameters, based on the frame's |
707 | data; all faces are deltas applied to this. */ | |
867dd159 | 708 | |
660ed669 JB |
709 | static void |
710 | compute_base_face (f, face) | |
711 | FRAME_PTR f; | |
712 | struct face *face; | |
713 | { | |
714 | struct x_display *d = f->display.x; | |
715 | ||
716 | face->gc = 0; | |
717 | face->foreground = d->foreground_pixel; | |
718 | face->background = d->background_pixel; | |
719 | face->font = d->font; | |
582080c1 | 720 | face->stipple = 0; |
660ed669 | 721 | face->underline = 0; |
582080c1 JB |
722 | |
723 | /* Avoid a face comparison by making this invalid. */ | |
724 | face->cached_index = -1; | |
660ed669 JB |
725 | } |
726 | ||
867dd159 RS |
727 | /* Return the face ID to use to display a special glyph which selects |
728 | FACE_CODE as the face ID, assuming that ordinarily the face would | |
729 | be CURRENT_FACE. F is the frame. */ | |
730 | ||
731 | int | |
732 | compute_glyph_face (f, face_code, current_face) | |
733 | struct frame *f; | |
734 | int face_code, current_face; | |
735 | { | |
736 | struct face face; | |
737 | ||
738 | face = *FRAME_COMPUTED_FACES (f)[current_face]; | |
739 | ||
740 | if (face_code >= 0 && face_code < FRAME_N_PARAM_FACES (f) | |
741 | && FRAME_PARAM_FACES (f) [face_code] != 0) | |
742 | merge_faces (FRAME_PARAM_FACES (f) [face_code], &face); | |
660ed669 | 743 | |
867dd159 RS |
744 | return intern_computed_face (f, &face); |
745 | } | |
746 | \f | |
cb637678 | 747 | /* Return the face ID associated with a buffer position POS. |
7b7739b1 JB |
748 | Store into *ENDPTR the position at which a different face is needed. |
749 | This does not take account of glyphs that specify their own face codes. | |
f6b98e0b | 750 | F is the frame in use for display, and W is a window displaying |
bc0db68d RS |
751 | the current buffer. |
752 | ||
b349f4fb RS |
753 | REGION_BEG, REGION_END delimit the region, so it can be highlighted. |
754 | ||
755 | LIMIT is a position not to scan beyond. That is to limit | |
6f134486 RS |
756 | the time this function can take. |
757 | ||
758 | If MOUSE is nonzero, use the character's mouse-face, not its face. */ | |
bc0db68d | 759 | |
cb637678 | 760 | int |
6f134486 | 761 | compute_char_face (f, w, pos, region_beg, region_end, endptr, limit, mouse) |
7b7739b1 | 762 | struct frame *f; |
f211082d | 763 | struct window *w; |
7b7739b1 | 764 | int pos; |
bc0db68d | 765 | int region_beg, region_end; |
7b7739b1 | 766 | int *endptr; |
b349f4fb | 767 | int limit; |
6f134486 | 768 | int mouse; |
7b7739b1 JB |
769 | { |
770 | struct face face; | |
b6d40e46 | 771 | Lisp_Object prop, position; |
7b7739b1 JB |
772 | int i, j, noverlays; |
773 | int facecode; | |
7b7739b1 | 774 | Lisp_Object *overlay_vec; |
f211082d | 775 | Lisp_Object frame; |
f6b98e0b | 776 | int endpos; |
6f134486 | 777 | Lisp_Object propname; |
f6b98e0b JB |
778 | |
779 | /* W must display the current buffer. We could write this function | |
780 | to use the frame and buffer of W, but right now it doesn't. */ | |
781 | if (XBUFFER (w->buffer) != current_buffer) | |
782 | abort (); | |
f211082d JB |
783 | |
784 | XSET (frame, Lisp_Frame, f); | |
7b7739b1 | 785 | |
f6b98e0b | 786 | endpos = ZV; |
bc0db68d RS |
787 | if (pos < region_beg && region_beg < endpos) |
788 | endpos = region_beg; | |
f6b98e0b | 789 | |
7b7739b1 | 790 | XFASTINT (position) = pos; |
6f134486 RS |
791 | |
792 | if (mouse) | |
793 | propname = Qmouse_face; | |
794 | else | |
795 | propname = Qface; | |
796 | ||
797 | prop = Fget_text_property (position, propname, w->buffer); | |
798 | ||
b6d40e46 | 799 | { |
b349f4fb | 800 | Lisp_Object limit1, end; |
7b7739b1 | 801 | |
b349f4fb | 802 | XFASTINT (limit1) = (limit < endpos ? limit : endpos); |
6f134486 | 803 | end = Fnext_single_property_change (position, propname, w->buffer, limit1); |
b6d40e46 JB |
804 | if (INTEGERP (end)) |
805 | endpos = XINT (end); | |
806 | } | |
807 | ||
808 | { | |
f6b98e0b | 809 | int next_overlay; |
9516fe94 RS |
810 | int len; |
811 | ||
812 | /* First try with room for 40 overlays. */ | |
813 | len = 40; | |
814 | overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); | |
815 | ||
816 | noverlays = overlays_at (pos, 0, &overlay_vec, &len, &next_overlay); | |
817 | ||
818 | /* If there are more than 40, | |
819 | make enough space for all, and try again. */ | |
820 | if (noverlays > len) | |
821 | { | |
822 | len = noverlays; | |
823 | overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); | |
824 | noverlays = overlays_at (pos, 0, &overlay_vec, &len, &next_overlay); | |
825 | } | |
b6d40e46 | 826 | |
f6b98e0b JB |
827 | if (next_overlay < endpos) |
828 | endpos = next_overlay; | |
b6d40e46 JB |
829 | } |
830 | ||
831 | *endptr = endpos; | |
7b7739b1 JB |
832 | |
833 | /* Optimize the default case. */ | |
bc0db68d RS |
834 | if (noverlays == 0 && NILP (prop) |
835 | && !(pos >= region_beg && pos < region_end)) | |
cb637678 | 836 | return 0; |
7b7739b1 | 837 | |
660ed669 | 838 | compute_base_face (f, &face); |
7b7739b1 JB |
839 | |
840 | if (!NILP (prop)) | |
841 | { | |
1d9fd7fe | 842 | facecode = face_name_id_number (f, prop); |
7b00de84 JB |
843 | if (facecode >= 0 && facecode < FRAME_N_PARAM_FACES (f) |
844 | && FRAME_PARAM_FACES (f) [facecode] != 0) | |
845 | merge_faces (FRAME_PARAM_FACES (f) [facecode], &face); | |
7b7739b1 JB |
846 | } |
847 | ||
4d6ebff8 | 848 | noverlays = sort_overlays (overlay_vec, noverlays, w); |
7b7739b1 JB |
849 | |
850 | /* Now merge the overlay data in that order. */ | |
7b7739b1 JB |
851 | for (i = 0; i < noverlays; i++) |
852 | { | |
6f134486 | 853 | prop = Foverlay_get (overlay_vec[i], propname); |
7b7739b1 JB |
854 | if (!NILP (prop)) |
855 | { | |
856 | Lisp_Object oend; | |
857 | int oendpos; | |
858 | ||
1d9fd7fe | 859 | facecode = face_name_id_number (f, prop); |
7b00de84 JB |
860 | if (facecode >= 0 && facecode < FRAME_N_PARAM_FACES (f) |
861 | && FRAME_PARAM_FACES (f) [facecode] != 0) | |
6f134486 | 862 | merge_faces (FRAME_PARAM_FACES (f)[facecode], &face); |
7b7739b1 | 863 | |
4d6ebff8 | 864 | oend = OVERLAY_END (overlay_vec[i]); |
7b7739b1 | 865 | oendpos = OVERLAY_POSITION (oend); |
f6b98e0b | 866 | if (oendpos < endpos) |
7b7739b1 JB |
867 | endpos = oendpos; |
868 | } | |
869 | } | |
870 | ||
bc0db68d RS |
871 | if (pos >= region_beg && pos < region_end) |
872 | { | |
873 | if (region_end < endpos) | |
874 | endpos = region_end; | |
875 | if (region_face >= 0 && region_face < next_face_id) | |
6f134486 | 876 | merge_faces (FRAME_PARAM_FACES (f)[region_face], &face); |
bc0db68d RS |
877 | } |
878 | ||
7b7739b1 JB |
879 | *endptr = endpos; |
880 | ||
7b00de84 | 881 | return intern_computed_face (f, &face); |
f211082d | 882 | } |
867dd159 | 883 | \f |
660ed669 JB |
884 | /* Recompute the GC's for the default and modeline faces. |
885 | We call this after changing frame parameters on which those GC's | |
886 | depend. */ | |
fffc2367 | 887 | |
660ed669 JB |
888 | void |
889 | recompute_basic_faces (f) | |
890 | FRAME_PTR f; | |
891 | { | |
892 | /* If the frame's faces haven't been initialized yet, don't worry about | |
893 | this stuff. */ | |
7b00de84 | 894 | if (FRAME_N_PARAM_FACES (f) < 2) |
660ed669 JB |
895 | return; |
896 | ||
897 | BLOCK_INPUT; | |
898 | ||
899 | if (FRAME_DEFAULT_FACE (f)->gc) | |
900 | XFreeGC (x_current_display, FRAME_DEFAULT_FACE (f)->gc); | |
660ed669 JB |
901 | if (FRAME_MODE_LINE_FACE (f)->gc) |
902 | XFreeGC (x_current_display, FRAME_MODE_LINE_FACE (f)->gc); | |
7b00de84 JB |
903 | |
904 | compute_base_face (f, FRAME_DEFAULT_FACE (f)); | |
905 | compute_base_face (f, FRAME_MODE_LINE_FACE (f)); | |
906 | ||
907 | merge_faces (FRAME_DEFAULT_PARAM_FACE (f), FRAME_DEFAULT_FACE (f)); | |
908 | merge_faces (FRAME_MODE_LINE_PARAM_FACE (f), FRAME_MODE_LINE_FACE (f)); | |
909 | ||
910 | build_face (f, FRAME_DEFAULT_FACE (f)); | |
660ed669 JB |
911 | build_face (f, FRAME_MODE_LINE_FACE (f)); |
912 | ||
913 | UNBLOCK_INPUT; | |
914 | } | |
915 | ||
916 | ||
c115973b | 917 | \f |
cb637678 | 918 | /* Lisp interface. */ |
c115973b JB |
919 | |
920 | DEFUN ("frame-face-alist", Fframe_face_alist, Sframe_face_alist, 1, 1, 0, | |
921 | "") | |
922 | (frame) | |
923 | Lisp_Object frame; | |
924 | { | |
925 | CHECK_FRAME (frame, 0); | |
926 | return XFRAME (frame)->face_alist; | |
927 | } | |
928 | ||
929 | DEFUN ("set-frame-face-alist", Fset_frame_face_alist, Sset_frame_face_alist, | |
930 | 2, 2, 0, "") | |
931 | (frame, value) | |
932 | Lisp_Object frame, value; | |
933 | { | |
934 | CHECK_FRAME (frame, 0); | |
935 | XFRAME (frame)->face_alist = value; | |
936 | return value; | |
937 | } | |
938 | ||
939 | ||
940 | DEFUN ("make-face-internal", Fmake_face_internal, Smake_face_internal, 1, 1, 0, | |
941 | "Create face number FACE-ID on all frames.") | |
942 | (face_id) | |
943 | Lisp_Object face_id; | |
944 | { | |
945 | Lisp_Object rest; | |
946 | int id = XINT (face_id); | |
947 | ||
f211082d JB |
948 | CHECK_NUMBER (face_id, 0); |
949 | if (id < 0 || id >= next_face_id) | |
950 | error ("Face id out of range"); | |
c115973b JB |
951 | |
952 | for (rest = Vframe_list; !NILP (rest); rest = XCONS (rest)->cdr) | |
953 | { | |
954 | struct frame *f = XFRAME (XCONS (rest)->car); | |
cb637678 JB |
955 | if (FRAME_X_P (f)) |
956 | ensure_face_ready (f, id); | |
c115973b JB |
957 | } |
958 | return Qnil; | |
959 | } | |
960 | ||
961 | ||
962 | DEFUN ("set-face-attribute-internal", Fset_face_attribute_internal, | |
963 | Sset_face_attribute_internal, 4, 4, 0, "") | |
964 | (face_id, attr_name, attr_value, frame) | |
965 | Lisp_Object face_id, attr_name, attr_value, frame; | |
966 | { | |
967 | struct face *face; | |
968 | struct frame *f; | |
969 | int magic_p; | |
970 | int id; | |
971 | ||
972 | CHECK_FRAME (frame, 0); | |
f211082d | 973 | CHECK_NUMBER (face_id, 0); |
c115973b JB |
974 | CHECK_SYMBOL (attr_name, 0); |
975 | ||
976 | f = XFRAME (frame); | |
977 | id = XINT (face_id); | |
f211082d JB |
978 | if (id < 0 || id >= next_face_id) |
979 | error ("Face id out of range"); | |
c115973b | 980 | |
b6d40e46 | 981 | if (! FRAME_X_P (f)) |
b839cea0 | 982 | return Qnil; |
b6d40e46 | 983 | |
c115973b | 984 | ensure_face_ready (f, id); |
7b00de84 | 985 | face = FRAME_PARAM_FACES (f) [XFASTINT (face_id)]; |
c115973b JB |
986 | |
987 | if (EQ (attr_name, intern ("font"))) | |
988 | { | |
f211082d | 989 | XFontStruct *font = load_font (f, attr_value); |
ebc64af3 RS |
990 | if (face->font != f->display.x->font) |
991 | unload_font (f, face->font); | |
c115973b | 992 | face->font = font; |
6717f691 RS |
993 | if (frame_update_line_height (f)) |
994 | x_set_window_size (f, 0, f->width, f->height); | |
c115973b JB |
995 | } |
996 | else if (EQ (attr_name, intern ("foreground"))) | |
997 | { | |
f211082d | 998 | unsigned long new_color = load_color (f, attr_value); |
c115973b JB |
999 | unload_color (f, face->foreground); |
1000 | face->foreground = new_color; | |
c115973b JB |
1001 | } |
1002 | else if (EQ (attr_name, intern ("background"))) | |
1003 | { | |
f211082d | 1004 | unsigned long new_color = load_color (f, attr_value); |
c115973b JB |
1005 | unload_color (f, face->background); |
1006 | face->background = new_color; | |
c115973b JB |
1007 | } |
1008 | #if 0 | |
1009 | else if (EQ (attr_name, intern ("background-pixmap"))) | |
1010 | { | |
c115973b JB |
1011 | unsigned int w, h, d; |
1012 | unsigned long new_pixmap = load_pixmap (f, attr_value, &w, &h, &d, 0); | |
f211082d JB |
1013 | unload_pixmap (f, face->stipple); |
1014 | if (NILP (attr_value)) | |
1015 | new_pixmap = 0; | |
1016 | face->stipple = new_pixmap; | |
c115973b JB |
1017 | face->pixmap_w = w; |
1018 | face->pixmap_h = h; | |
1019 | /* face->pixmap_depth = d; */ | |
c115973b JB |
1020 | } |
1021 | #endif /* 0 */ | |
1022 | else if (EQ (attr_name, intern ("underline"))) | |
1023 | { | |
1024 | int new = !NILP (attr_value); | |
1025 | face->underline = new; | |
1026 | } | |
1027 | else | |
1028 | error ("unknown face attribute"); | |
1029 | ||
7b00de84 JB |
1030 | if (id == 0 || id == 1) |
1031 | recompute_basic_faces (f); | |
c115973b | 1032 | |
584d0634 JB |
1033 | /* If we're modifying either of the frame's display faces, that |
1034 | means that we're changing the parameters of a fixed face code; | |
1035 | since the color/font/whatever is changed but the face ID hasn't, | |
1036 | redisplay won't know to redraw the affected sections. Give it a | |
1037 | kick. */ | |
1038 | if (id == 0 || id == 1) | |
1039 | SET_FRAME_GARBAGED (f); | |
1040 | else | |
1041 | /* Otherwise, it's enough to tell it to redisplay the text. */ | |
1042 | windows_or_buffers_changed = 1; | |
1043 | ||
c115973b JB |
1044 | return Qnil; |
1045 | } | |
1046 | ||
1047 | DEFUN ("internal-next-face-id", Finternal_next_face_id, Sinternal_next_face_id, | |
1048 | 0, 0, 0, "") | |
1049 | () | |
1050 | { | |
1051 | return make_number (next_face_id++); | |
1052 | } | |
f211082d JB |
1053 | |
1054 | /* Return the face id for name NAME on frame FRAME. | |
1055 | (It should be the same for all frames, | |
1056 | but it's as easy to use the "right" frame to look it up | |
1057 | as to use any other one.) */ | |
1058 | ||
1d9fd7fe JB |
1059 | int |
1060 | face_name_id_number (f, name) | |
1061 | FRAME_PTR f; | |
1062 | Lisp_Object name; | |
f211082d JB |
1063 | { |
1064 | Lisp_Object tem; | |
1065 | ||
82411f65 | 1066 | tem = Fcdr (assq_no_quit (name, f->face_alist)); |
b6d40e46 JB |
1067 | if (NILP (tem)) |
1068 | return 0; | |
f211082d JB |
1069 | CHECK_VECTOR (tem, 0); |
1070 | tem = XVECTOR (tem)->contents[2]; | |
1071 | CHECK_NUMBER (tem, 0); | |
1072 | return XINT (tem); | |
1073 | } | |
c115973b | 1074 | \f |
cb637678 JB |
1075 | /* Emacs initialization. */ |
1076 | ||
c115973b | 1077 | void |
f211082d | 1078 | syms_of_xfaces () |
c115973b | 1079 | { |
f211082d JB |
1080 | Qface = intern ("face"); |
1081 | staticpro (&Qface); | |
6f134486 RS |
1082 | Qmouse_face = intern ("mouse-face"); |
1083 | staticpro (&Qmouse_face); | |
f211082d | 1084 | |
bc0db68d RS |
1085 | DEFVAR_INT ("region-face", ®ion_face, |
1086 | "Face number to use to highlight the region\n\ | |
1087 | The region is highlighted with this face\n\ | |
1088 | when Transient Mark mode is enabled and the mark is active."); | |
1089 | ||
c115973b JB |
1090 | defsubr (&Sframe_face_alist); |
1091 | defsubr (&Sset_frame_face_alist); | |
1092 | defsubr (&Smake_face_internal); | |
1093 | defsubr (&Sset_face_attribute_internal); | |
1094 | defsubr (&Sinternal_next_face_id); | |
1095 | } | |
cb637678 JB |
1096 | |
1097 | #endif /* HAVE_X_WINDOWS */ | |
1098 |