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 | ||
87485d6f | 28 | #ifdef HAVE_FACES |
cb637678 | 29 | |
87485d6f | 30 | #ifdef HAVE_X_WINDOWS |
c115973b | 31 | #include "xterm.h" |
87485d6f MW |
32 | #endif |
33 | #ifdef MSDOS | |
34 | #include "dosfns.h" | |
35 | #endif | |
c115973b | 36 | #include "buffer.h" |
f211082d | 37 | #include "dispextern.h" |
7b7739b1 | 38 | #include "frame.h" |
357f32fc | 39 | #include "blockinput.h" |
b6d40e46 | 40 | #include "window.h" |
bde7c500 | 41 | #include "intervals.h" |
c115973b | 42 | |
87485d6f | 43 | #ifdef HAVE_X_WINDOWS |
657070ac JB |
44 | /* Compensate for bug in Xos.h on some systems, on which it requires |
45 | time.h. On some such systems, Xos.h tries to redefine struct | |
46 | timeval and struct timezone if USG is #defined while it is | |
47 | #included. */ | |
6233db35 | 48 | #ifdef XOS_NEEDS_TIME_H |
657070ac | 49 | |
e11d186d | 50 | #include <time.h> |
657070ac JB |
51 | #undef USG |
52 | #include <X11/Xos.h> | |
53 | #define USG | |
e11d186d | 54 | #define __TIMEVAL__ |
e11d186d | 55 | |
657070ac | 56 | #else |
7a4d2269 | 57 | |
c115973b JB |
58 | #include <X11/Xos.h> |
59 | ||
657070ac | 60 | #endif |
87485d6f | 61 | #endif /* HAVE_X_WINDOWS */ |
cb637678 JB |
62 | \f |
63 | /* An explanation of the face data structures. */ | |
64 | ||
65 | /* ========================= Face Data Structures ========================= | |
66 | ||
7b00de84 | 67 | Let FACE-NAME be a symbol naming a face. |
cb637678 | 68 | |
7b00de84 JB |
69 | Let FACE-VECTOR be (assq FACE-NAME (frame-face-alist FRAME)) |
70 | FACE-VECTOR is either nil, or a vector of the form | |
cb637678 JB |
71 | [face NAME ID FONT FOREGROUND BACKGROUND BACKGROUND-PIXMAP UNDERLINE-P] |
72 | where | |
73 | face is the symbol `face', | |
74 | NAME is the symbol with which this vector is associated (a backpointer), | |
75 | ID is the face ID, an integer used internally by the C code to identify | |
76 | the face, | |
77 | FONT, FOREGROUND, and BACKGROUND are strings naming the fonts and colors | |
78 | to use with the face, | |
79 | BACKGROUND-PIXMAP is the name of an x bitmap filename, which we don't | |
80 | use right now, and | |
81 | UNDERLINE-P is non-nil if the face should be underlined. | |
7b00de84 JB |
82 | If any of these elements are nil, that parameter is considered |
83 | unspecified; parameters from faces specified by lower-priority | |
84 | overlays or text properties, or the parameters of the frame itself, | |
85 | can show through. (lisp/faces.el maintains these lists.) | |
86 | ||
87 | (assq FACE-NAME global-face-data) returns a vector describing the | |
88 | global parameters for that face. | |
89 | ||
7556890b | 90 | Let PARAM-FACE be FRAME->output_data.x->param_faces[Faref (FACE-VECTOR, 2)]. |
7b00de84 JB |
91 | PARAM_FACE is a struct face whose members are the Xlib analogues of |
92 | the parameters in FACE-VECTOR. If an element of FACE-VECTOR is | |
93 | nil, then the corresponding member of PARAM_FACE is FACE_DEFAULT. | |
94 | These faces are called "parameter faces", because they're the ones | |
95 | lisp manipulates to control what gets displayed. Elements 0 and 1 | |
7556890b | 96 | of FRAME->output_data.x->param_faces are special - they describe the |
7b00de84 | 97 | default and mode line faces. None of the faces in param_faces have |
8e6208c5 | 98 | GC's. (See src/dispextern.h for the definition of struct face. |
7b00de84 JB |
99 | lisp/faces.el maintains the isomorphism between face_alist and |
100 | param_faces.) | |
101 | ||
102 | The functions compute_char_face and compute_glyph_face find and | |
103 | combine the parameter faces associated with overlays and text | |
104 | properties. The resulting faces are called "computed faces"; none | |
105 | of their members are FACE_DEFAULT; they are completely specified. | |
106 | They then call intern_compute_face to search | |
7556890b | 107 | FRAME->output_data.x->computed_faces for a matching face, add one if |
7b00de84 | 108 | none is found, and return the index into |
7556890b | 109 | FRAME->output_data.x->computed_faces. FRAME's glyph matrices use these |
7b00de84 JB |
110 | indices to record the faces of the matrix characters, and the X |
111 | display hooks consult compute_faces to decide how to display these | |
112 | characters. Elements 0 and 1 of computed_faces always describe the | |
113 | default and mode-line faces. | |
114 | ||
cd0bb842 RS |
115 | Each computed face belongs to a particular frame. |
116 | ||
42120bc7 RS |
117 | Computed faces have graphics contexts some of the time. |
118 | intern_face builds a GC for a specified computed face | |
119 | if it doesn't have one already. | |
120 | clear_face_cache clears out the GCs of all computed faces. | |
121 | This is done from time to time so that we don't hold on to | |
122 | lots of GCs that are no longer needed. | |
7b00de84 | 123 | |
195f798e RS |
124 | If a computed face has 0 as its font, |
125 | it is unused, and can be reused by new_computed_face. | |
126 | ||
7b00de84 JB |
127 | Constraints: |
128 | ||
129 | Symbols naming faces must have associations on all frames; for any | |
130 | FRAME, for all FACE-NAME, if (assq FACE-NAME (frame-face-alist | |
131 | FRAME)) is non-nil, it must be non-nil for all frames. | |
132 | ||
133 | Analogously, indices into param_faces must be valid on all frames; | |
134 | if param_faces[i] is a non-zero face pointer on one frame, then it | |
135 | must be filled in on all frames. Code assumes that face ID's can | |
136 | be used on any frame. | |
cb637678 JB |
137 | |
138 | Some subtleties: | |
7b7739b1 | 139 | |
7b00de84 JB |
140 | Why do we keep param_faces and computed_faces separate? |
141 | computed_faces contains an element for every combination of facial | |
142 | parameters we have ever displayed. indices into param_faces have | |
143 | to be valid on all frames. If they were the same array, then that | |
144 | array would grow very large on all frames, because any facial | |
145 | combination displayed on any frame would need to be a valid entry | |
42120bc7 | 146 | on all frames. */ |
cb637678 JB |
147 | \f |
148 | /* Definitions and declarations. */ | |
149 | ||
c115973b | 150 | /* The number of face-id's in use (same for all frames). */ |
f8758da5 | 151 | static int next_face_id; |
c115973b | 152 | |
bc0db68d | 153 | /* The number of the face to use to indicate the region. */ |
f8758da5 | 154 | static int region_face; |
bc0db68d | 155 | |
9516fe94 RS |
156 | /* This is what appears in a slot in a face to signify that the face |
157 | does not specify that display aspect. */ | |
7b7739b1 JB |
158 | #define FACE_DEFAULT (~0) |
159 | ||
6f134486 | 160 | Lisp_Object Qface, Qmouse_face; |
cd0bb842 | 161 | Lisp_Object Qpixmap_spec_p; |
f211082d | 162 | |
415445e2 | 163 | int face_name_id_number ( /* FRAME_PTR, Lisp_Object name */ ); |
cb637678 | 164 | |
415445e2 | 165 | struct face *intern_face ( /* FRAME_PTR, struct face * */ ); |
7b00de84 JB |
166 | static int new_computed_face ( /* FRAME_PTR, struct face * */ ); |
167 | static int intern_computed_face ( /* FRAME_PTR, struct face * */ ); | |
415445e2 | 168 | static void ensure_face_ready ( /* FRAME_PTR, int id */ ); |
254a1b66 | 169 | void recompute_basic_faces ( /* FRAME_PTR f */ ); |
c115973b | 170 | \f |
cb637678 JB |
171 | /* Allocating, copying, and comparing struct faces. */ |
172 | ||
173 | /* Allocate a new face */ | |
174 | static struct face * | |
175 | allocate_face () | |
176 | { | |
177 | struct face *result = (struct face *) xmalloc (sizeof (struct face)); | |
178 | bzero (result, sizeof (struct face)); | |
179 | result->font = (XFontStruct *) FACE_DEFAULT; | |
180 | result->foreground = FACE_DEFAULT; | |
181 | result->background = FACE_DEFAULT; | |
182 | result->stipple = FACE_DEFAULT; | |
183 | return result; | |
184 | } | |
c115973b | 185 | |
cb637678 | 186 | /* Make a new face that's a copy of an existing one. */ |
c115973b JB |
187 | static struct face * |
188 | copy_face (face) | |
189 | struct face *face; | |
190 | { | |
191 | struct face *result = allocate_face (); | |
192 | ||
193 | result->font = face->font; | |
194 | result->foreground = face->foreground; | |
195 | result->background = face->background; | |
f211082d | 196 | result->stipple = face->stipple; |
c115973b | 197 | result->underline = face->underline; |
cd0bb842 RS |
198 | result->pixmap_h = face->pixmap_h; |
199 | result->pixmap_w = face->pixmap_w; | |
c115973b JB |
200 | |
201 | return result; | |
202 | } | |
203 | ||
204 | static int | |
205 | face_eql (face1, face2) | |
206 | struct face *face1, *face2; | |
207 | { | |
cb637678 | 208 | return ( face1->font == face2->font |
c115973b JB |
209 | && face1->foreground == face2->foreground |
210 | && face1->background == face2->background | |
cb637678 JB |
211 | && face1->stipple == face2->stipple |
212 | && face1->underline == face2->underline); | |
c115973b | 213 | } |
cb637678 | 214 | \f |
42120bc7 | 215 | /* Managing graphics contexts of faces. */ |
c115973b | 216 | |
87485d6f | 217 | #ifdef HAVE_X_WINDOWS |
42120bc7 | 218 | /* Given a computed face, construct its graphics context if necessary. */ |
cb637678 JB |
219 | |
220 | struct face * | |
221 | intern_face (f, face) | |
222 | struct frame *f; | |
223 | struct face *face; | |
c115973b JB |
224 | { |
225 | GC gc; | |
226 | XGCValues xgcv; | |
227 | unsigned long mask; | |
228 | ||
42120bc7 RS |
229 | if (face->gc) |
230 | return face; | |
231 | ||
660ed669 JB |
232 | BLOCK_INPUT; |
233 | ||
f211082d JB |
234 | if (face->foreground != FACE_DEFAULT) |
235 | xgcv.foreground = face->foreground; | |
236 | else | |
7556890b | 237 | xgcv.foreground = f->output_data.x->foreground_pixel; |
660ed669 | 238 | |
f211082d JB |
239 | if (face->background != FACE_DEFAULT) |
240 | xgcv.background = face->background; | |
241 | else | |
7556890b | 242 | xgcv.background = f->output_data.x->background_pixel; |
660ed669 | 243 | |
3f000d8c | 244 | if (face->font && face->font != (XFontStruct *) FACE_DEFAULT) |
f211082d JB |
245 | xgcv.font = face->font->fid; |
246 | else | |
7556890b | 247 | xgcv.font = f->output_data.x->font->fid; |
660ed669 | 248 | |
c115973b | 249 | xgcv.graphics_exposures = 0; |
660ed669 | 250 | |
c115973b | 251 | mask = GCForeground | GCBackground | GCFont | GCGraphicsExposures; |
cd0bb842 | 252 | if (face->stipple && face->stipple != FACE_DEFAULT) |
95887807 RS |
253 | { |
254 | xgcv.fill_style = FillStippled; | |
255 | xgcv.stipple = x_bitmap_pixmap (f, face->stipple); | |
256 | mask |= GCFillStyle | GCStipple; | |
257 | } | |
cd0bb842 | 258 | |
42120bc7 | 259 | gc = XCreateGC (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), |
c115973b | 260 | mask, &xgcv); |
660ed669 | 261 | |
f211082d | 262 | face->gc = gc; |
660ed669 JB |
263 | |
264 | UNBLOCK_INPUT; | |
42120bc7 RS |
265 | |
266 | return face; | |
c115973b | 267 | } |
cb637678 | 268 | |
42120bc7 RS |
269 | /* Clear out all graphics contexts for all computed faces |
270 | except for the default and mode line faces. | |
271 | This should be done from time to time just to avoid | |
272 | keeping too many graphics contexts that are no longer needed. */ | |
273 | ||
274 | void | |
275 | clear_face_cache () | |
276 | { | |
277 | Lisp_Object tail, frame; | |
278 | ||
279 | BLOCK_INPUT; | |
280 | FOR_EACH_FRAME (tail, frame) | |
281 | { | |
282 | FRAME_PTR f = XFRAME (frame); | |
283 | if (FRAME_X_P (f)) | |
284 | { | |
285 | int i; | |
286 | Display *dpy = FRAME_X_DISPLAY (f); | |
287 | ||
288 | for (i = 2; i < FRAME_N_COMPUTED_FACES (f); i++) | |
289 | { | |
290 | struct face *face = FRAME_COMPUTED_FACES (f) [i]; | |
291 | if (face->gc) | |
292 | XFreeGC (dpy, face->gc); | |
293 | face->gc = 0; | |
294 | } | |
295 | } | |
296 | } | |
297 | ||
298 | UNBLOCK_INPUT; | |
299 | } | |
300 | \f | |
cd0bb842 RS |
301 | /* Allocating, freeing, and duplicating fonts, colors, and pixmaps. |
302 | ||
303 | These functions operate on param faces only. | |
304 | Computed faces get their fonts, colors and pixmaps | |
305 | by merging param faces. */ | |
cb637678 JB |
306 | |
307 | static XFontStruct * | |
308 | load_font (f, name) | |
309 | struct frame *f; | |
310 | Lisp_Object name; | |
311 | { | |
312 | XFontStruct *font; | |
313 | ||
314 | if (NILP (name)) | |
315 | return (XFontStruct *) FACE_DEFAULT; | |
316 | ||
317 | CHECK_STRING (name, 0); | |
318 | BLOCK_INPUT; | |
42120bc7 | 319 | font = XLoadQueryFont (FRAME_X_DISPLAY (f), (char *) XSTRING (name)->data); |
cb637678 JB |
320 | UNBLOCK_INPUT; |
321 | ||
322 | if (! font) | |
323 | Fsignal (Qerror, Fcons (build_string ("undefined font"), | |
324 | Fcons (name, Qnil))); | |
325 | return font; | |
326 | } | |
327 | ||
328 | static void | |
329 | unload_font (f, font) | |
330 | struct frame *f; | |
331 | XFontStruct *font; | |
332 | { | |
195f798e RS |
333 | int len = FRAME_N_COMPUTED_FACES (f); |
334 | int i; | |
335 | ||
cb637678 JB |
336 | if (!font || font == ((XFontStruct *) FACE_DEFAULT)) |
337 | return; | |
660ed669 JB |
338 | |
339 | BLOCK_INPUT; | |
195f798e RS |
340 | /* Invalidate any computed faces which use this font, |
341 | and free their GC's if they have any. */ | |
f3400cf9 | 342 | for (i = 2; i < len; i++) |
195f798e RS |
343 | { |
344 | struct face *face = FRAME_COMPUTED_FACES (f)[i]; | |
345 | if (face->font == font) | |
346 | { | |
347 | Display *dpy = FRAME_X_DISPLAY (f); | |
348 | if (face->gc) | |
349 | XFreeGC (dpy, face->gc); | |
350 | face->gc = 0; | |
f3400cf9 | 351 | /* This marks the computed face as available to reuse. */ |
195f798e RS |
352 | face->font = 0; |
353 | } | |
354 | } | |
355 | ||
42120bc7 | 356 | XFreeFont (FRAME_X_DISPLAY (f), font); |
660ed669 | 357 | UNBLOCK_INPUT; |
cb637678 JB |
358 | } |
359 | ||
360 | static unsigned long | |
361 | load_color (f, name) | |
362 | struct frame *f; | |
363 | Lisp_Object name; | |
364 | { | |
cb637678 JB |
365 | XColor color; |
366 | int result; | |
367 | ||
368 | if (NILP (name)) | |
369 | return FACE_DEFAULT; | |
370 | ||
cb637678 | 371 | CHECK_STRING (name, 0); |
34dda5f4 KH |
372 | /* if the colormap is full, defined_color will return a best match |
373 | to the values in an an existing cell. */ | |
a992f9d9 | 374 | result = defined_color(f, (char *) XSTRING (name)->data, &color, 1); |
cb637678 JB |
375 | if (! result) |
376 | Fsignal (Qerror, Fcons (build_string ("undefined color"), | |
377 | Fcons (name, Qnil))); | |
cb637678 JB |
378 | return (unsigned long) color.pixel; |
379 | } | |
380 | ||
381 | static void | |
382 | unload_color (f, pixel) | |
383 | struct frame *f; | |
7a4d2269 | 384 | unsigned long pixel; |
cb637678 JB |
385 | { |
386 | Colormap cmap; | |
42120bc7 | 387 | Display *dpy = FRAME_X_DISPLAY (f); |
828e66d1 RS |
388 | int class = FRAME_X_DISPLAY_INFO (f)->visual->class; |
389 | ||
32dc0866 | 390 | if (pixel == FACE_DEFAULT |
0704eec9 RS |
391 | || pixel == BLACK_PIX_DEFAULT (f) |
392 | || pixel == WHITE_PIX_DEFAULT (f)) | |
cb637678 | 393 | return; |
42120bc7 | 394 | cmap = DefaultColormapOfScreen (DefaultScreenOfDisplay (dpy)); |
828e66d1 RS |
395 | |
396 | /* If display has an immutable color map, freeing colors is not | |
397 | necessary and some servers don't allow it. So don't do it. */ | |
398 | if (! (class == StaticColor || class == StaticGray || class == TrueColor)) | |
399 | { | |
195f798e RS |
400 | int len = FRAME_N_COMPUTED_FACES (f); |
401 | int i; | |
402 | ||
828e66d1 | 403 | BLOCK_INPUT; |
195f798e RS |
404 | /* Invalidate any computed faces which use this color, |
405 | and free their GC's if they have any. */ | |
f3400cf9 | 406 | for (i = 2; i < len; i++) |
195f798e RS |
407 | { |
408 | struct face *face = FRAME_COMPUTED_FACES (f)[i]; | |
409 | if (face->foreground == pixel | |
410 | || face->background == pixel) | |
411 | { | |
412 | Display *dpy = FRAME_X_DISPLAY (f); | |
413 | if (face->gc) | |
414 | XFreeGC (dpy, face->gc); | |
415 | face->gc = 0; | |
f3400cf9 | 416 | /* This marks the computed face as available to reuse. */ |
195f798e RS |
417 | face->font = 0; |
418 | } | |
419 | } | |
420 | ||
828e66d1 RS |
421 | XFreeColors (dpy, cmap, &pixel, 1, (unsigned long)0); |
422 | UNBLOCK_INPUT; | |
423 | } | |
cd0bb842 RS |
424 | } |
425 | ||
426 | DEFUN ("pixmap-spec-p", Fpixmap_spec_p, Spixmap_spec_p, 1, 1, 0, | |
ed791d5b EN |
427 | "Return t if OBJECT is a valid pixmap specification.") |
428 | (object) | |
429 | Lisp_Object object; | |
cd0bb842 RS |
430 | { |
431 | Lisp_Object height, width; | |
432 | ||
ed791d5b EN |
433 | return ((STRINGP (object) |
434 | || (CONSP (object) | |
435 | && CONSP (XCONS (object)->cdr) | |
436 | && CONSP (XCONS (XCONS (object)->cdr)->cdr) | |
437 | && NILP (XCONS (XCONS (XCONS (object)->cdr)->cdr)->cdr) | |
438 | && (width = XCONS (object)->car, INTEGERP (width)) | |
439 | && (height = XCONS (XCONS (object)->cdr)->car, INTEGERP (height)) | |
440 | && STRINGP (XCONS (XCONS (XCONS (object)->cdr)->cdr)->car) | |
cd0bb842 RS |
441 | && XINT (width) > 0 |
442 | && XINT (height) > 0 | |
443 | /* The string must have enough bits for width * height. */ | |
ed791d5b | 444 | && ((XSTRING (XCONS (XCONS (XCONS (object)->cdr)->cdr)->car)->size |
68be917d | 445 | * (BITS_PER_INT / sizeof (int))) |
e1befa75 | 446 | >= XFASTINT (width) * XFASTINT (height)))) |
cd0bb842 RS |
447 | ? Qt : Qnil); |
448 | } | |
449 | ||
450 | /* Load a bitmap according to NAME (which is either a file name | |
451 | or a pixmap spec). Return the bitmap_id (see xfns.c) | |
452 | or get an error if NAME is invalid. | |
453 | ||
454 | Store the bitmap width in *W_PTR and height in *H_PTR. */ | |
455 | ||
456 | static long | |
457 | load_pixmap (f, name, w_ptr, h_ptr) | |
7812a96f | 458 | FRAME_PTR f; |
cd0bb842 RS |
459 | Lisp_Object name; |
460 | unsigned int *w_ptr, *h_ptr; | |
461 | { | |
462 | int bitmap_id; | |
463 | Lisp_Object tem; | |
464 | ||
465 | if (NILP (name)) | |
466 | return FACE_DEFAULT; | |
467 | ||
468 | tem = Fpixmap_spec_p (name); | |
469 | if (NILP (tem)) | |
470 | wrong_type_argument (Qpixmap_spec_p, name); | |
471 | ||
472 | BLOCK_INPUT; | |
473 | ||
474 | if (CONSP (name)) | |
475 | { | |
476 | /* Decode a bitmap spec into a bitmap. */ | |
477 | ||
478 | int h, w; | |
479 | Lisp_Object bits; | |
480 | ||
481 | w = XINT (Fcar (name)); | |
482 | h = XINT (Fcar (Fcdr (name))); | |
483 | bits = Fcar (Fcdr (Fcdr (name))); | |
484 | ||
485 | bitmap_id = x_create_bitmap_from_data (f, XSTRING (bits)->data, | |
486 | w, h); | |
487 | } | |
488 | else | |
489 | { | |
490 | /* It must be a string -- a file name. */ | |
491 | bitmap_id = x_create_bitmap_from_file (f, name); | |
492 | } | |
493 | UNBLOCK_INPUT; | |
494 | ||
7812a96f RS |
495 | if (bitmap_id < 0) |
496 | Fsignal (Qerror, Fcons (build_string ("invalid or undefined bitmap"), | |
cd0bb842 RS |
497 | Fcons (name, Qnil))); |
498 | ||
499 | *w_ptr = x_bitmap_width (f, bitmap_id); | |
500 | *h_ptr = x_bitmap_height (f, bitmap_id); | |
501 | ||
502 | return bitmap_id; | |
cb637678 | 503 | } |
87485d6f MW |
504 | |
505 | #else /* !HAVE_X_WINDOWS */ | |
506 | ||
507 | /* Stubs for MSDOS when not under X. */ | |
508 | ||
509 | struct face * | |
510 | intern_face (f, face) | |
511 | struct frame *f; | |
512 | struct face *face; | |
513 | { | |
514 | return face; | |
515 | } | |
516 | ||
517 | void | |
518 | clear_face_cache () | |
519 | { | |
520 | /* No action. */ | |
521 | } | |
522 | ||
87485d6f MW |
523 | #ifdef MSDOS |
524 | unsigned long | |
525 | load_color (f, name) | |
526 | FRAME_PTR f; | |
527 | Lisp_Object name; | |
528 | { | |
529 | Lisp_Object result; | |
530 | ||
531 | if (NILP (name)) | |
532 | return FACE_DEFAULT; | |
533 | ||
534 | CHECK_STRING (name, 0); | |
535 | result = call1 (Qmsdos_color_translate, name); | |
536 | if (INTEGERP (result)) | |
537 | return XINT (result); | |
538 | else | |
539 | Fsignal (Qerror, Fcons (build_string ("undefined color"), | |
540 | Fcons (name, Qnil))); | |
541 | } | |
542 | #endif | |
543 | #endif /* !HAVE_X_WINDOWS */ | |
544 | ||
cb637678 | 545 | \f |
7b00de84 | 546 | /* Managing parameter face arrays for frames. */ |
cb637678 | 547 | |
cb637678 JB |
548 | void |
549 | init_frame_faces (f) | |
660ed669 | 550 | FRAME_PTR f; |
cb637678 JB |
551 | { |
552 | ensure_face_ready (f, 0); | |
cb637678 | 553 | ensure_face_ready (f, 1); |
660ed669 | 554 | |
fffc2367 RS |
555 | FRAME_N_COMPUTED_FACES (f) = 0; |
556 | FRAME_SIZE_COMPUTED_FACES (f) = 0; | |
557 | ||
7b00de84 JB |
558 | new_computed_face (f, FRAME_PARAM_FACES (f)[0]); |
559 | new_computed_face (f, FRAME_PARAM_FACES (f)[1]); | |
660ed669 | 560 | recompute_basic_faces (f); |
7b37f67b | 561 | |
87485d6f | 562 | #ifdef MULTI_FRAME |
1120eb5e JB |
563 | /* Find another X frame. */ |
564 | { | |
565 | Lisp_Object tail, frame, result; | |
566 | ||
567 | result = Qnil; | |
568 | FOR_EACH_FRAME (tail, frame) | |
569 | if (FRAME_X_P (XFRAME (frame)) | |
570 | && XFRAME (frame) != f) | |
571 | { | |
572 | result = frame; | |
573 | break; | |
574 | } | |
575 | ||
576 | /* If we didn't find any X frames other than f, then we don't need | |
577 | any faces other than 0 and 1, so we're okay. Otherwise, make | |
578 | sure that all faces valid on the selected frame are also valid | |
579 | on this new frame. */ | |
580 | if (FRAMEP (result)) | |
581 | { | |
582 | int i; | |
7b00de84 JB |
583 | int n_faces = FRAME_N_PARAM_FACES (XFRAME (result)); |
584 | struct face **faces = FRAME_PARAM_FACES (XFRAME (result)); | |
1120eb5e JB |
585 | |
586 | for (i = 2; i < n_faces; i++) | |
587 | if (faces[i]) | |
588 | ensure_face_ready (f, i); | |
589 | } | |
590 | } | |
87485d6f | 591 | #endif /* MULTI_FRAME */ |
cb637678 JB |
592 | } |
593 | ||
660ed669 | 594 | |
cb637678 | 595 | /* Called from Fdelete_frame. */ |
cd0bb842 | 596 | |
cb637678 JB |
597 | void |
598 | free_frame_faces (f) | |
599 | struct frame *f; | |
600 | { | |
42120bc7 | 601 | Display *dpy = FRAME_X_DISPLAY (f); |
cb637678 JB |
602 | int i; |
603 | ||
660ed669 JB |
604 | BLOCK_INPUT; |
605 | ||
7b00de84 | 606 | for (i = 0; i < FRAME_N_PARAM_FACES (f); i++) |
cb637678 | 607 | { |
7b00de84 | 608 | struct face *face = FRAME_PARAM_FACES (f) [i]; |
660ed669 JB |
609 | if (face) |
610 | { | |
7b00de84 JB |
611 | unload_font (f, face->font); |
612 | unload_color (f, face->foreground); | |
613 | unload_color (f, face->background); | |
cd0bb842 | 614 | x_destroy_bitmap (f, face->stipple); |
660ed669 JB |
615 | xfree (face); |
616 | } | |
cb637678 | 617 | } |
7b00de84 JB |
618 | xfree (FRAME_PARAM_FACES (f)); |
619 | FRAME_PARAM_FACES (f) = 0; | |
620 | FRAME_N_PARAM_FACES (f) = 0; | |
621 | ||
622 | /* All faces in FRAME_COMPUTED_FACES use resources copied from | |
42120bc7 RS |
623 | FRAME_PARAM_FACES; we can free them without fuss. |
624 | But we do free the GCs and the face objects themselves. */ | |
625 | for (i = 0; i < FRAME_N_COMPUTED_FACES (f); i++) | |
626 | { | |
627 | struct face *face = FRAME_COMPUTED_FACES (f) [i]; | |
628 | if (face) | |
629 | { | |
630 | if (face->gc) | |
631 | XFreeGC (dpy, face->gc); | |
632 | xfree (face); | |
633 | } | |
634 | } | |
7b00de84 JB |
635 | xfree (FRAME_COMPUTED_FACES (f)); |
636 | FRAME_COMPUTED_FACES (f) = 0; | |
637 | FRAME_N_COMPUTED_FACES (f) = 0; | |
660ed669 JB |
638 | |
639 | UNBLOCK_INPUT; | |
cb637678 | 640 | } |
c115973b | 641 | \f |
cb637678 JB |
642 | /* Interning faces in a frame's face array. */ |
643 | ||
660ed669 | 644 | static int |
7b00de84 JB |
645 | new_computed_face (f, new_face) |
646 | struct frame *f; | |
647 | struct face *new_face; | |
648 | { | |
195f798e RS |
649 | int len = FRAME_N_COMPUTED_FACES (f); |
650 | int i; | |
651 | ||
652 | /* Search for an unused computed face in the middle of the table. */ | |
653 | for (i = 0; i < len; i++) | |
654 | { | |
655 | struct face *face = FRAME_COMPUTED_FACES (f)[i]; | |
656 | if (face->font == 0) | |
657 | { | |
658 | FRAME_COMPUTED_FACES (f)[i] = copy_face (new_face); | |
659 | return i; | |
660 | } | |
661 | } | |
7b00de84 JB |
662 | |
663 | if (i >= FRAME_SIZE_COMPUTED_FACES (f)) | |
664 | { | |
665 | int new_size = i + 32; | |
666 | ||
667 | FRAME_COMPUTED_FACES (f) | |
fffc2367 RS |
668 | = (struct face **) (FRAME_SIZE_COMPUTED_FACES (f) == 0 |
669 | ? xmalloc (new_size * sizeof (struct face *)) | |
670 | : xrealloc (FRAME_COMPUTED_FACES (f), | |
671 | new_size * sizeof (struct face *))); | |
7b00de84 JB |
672 | FRAME_SIZE_COMPUTED_FACES (f) = new_size; |
673 | } | |
674 | ||
675 | i = FRAME_N_COMPUTED_FACES (f)++; | |
676 | FRAME_COMPUTED_FACES (f)[i] = copy_face (new_face); | |
677 | return i; | |
678 | } | |
679 | ||
680 | ||
681 | /* Find a match for NEW_FACE in a FRAME's computed face array, and add | |
682 | it if we don't find one. */ | |
683 | static int | |
684 | intern_computed_face (f, new_face) | |
685 | struct frame *f; | |
b6d40e46 | 686 | struct face *new_face; |
cb637678 | 687 | { |
7b00de84 | 688 | int len = FRAME_N_COMPUTED_FACES (f); |
cb637678 JB |
689 | int i; |
690 | ||
7b00de84 | 691 | /* Search for a computed face already on F equivalent to FACE. */ |
cb637678 JB |
692 | for (i = 0; i < len; i++) |
693 | { | |
7b00de84 JB |
694 | if (! FRAME_COMPUTED_FACES (f)[i]) |
695 | abort (); | |
696 | if (face_eql (new_face, FRAME_COMPUTED_FACES (f)[i])) | |
cb637678 JB |
697 | return i; |
698 | } | |
699 | ||
700 | /* We didn't find one; add a new one. */ | |
7b00de84 | 701 | return new_computed_face (f, new_face); |
cb637678 JB |
702 | } |
703 | ||
7b00de84 | 704 | /* Make parameter face id ID valid on frame F. */ |
cb637678 JB |
705 | |
706 | static void | |
707 | ensure_face_ready (f, id) | |
708 | struct frame *f; | |
709 | int id; | |
710 | { | |
7b00de84 | 711 | if (FRAME_N_PARAM_FACES (f) <= id) |
cb637678 JB |
712 | { |
713 | int n = id + 10; | |
714 | int i; | |
7b00de84 JB |
715 | if (!FRAME_N_PARAM_FACES (f)) |
716 | FRAME_PARAM_FACES (f) | |
cb637678 JB |
717 | = (struct face **) xmalloc (sizeof (struct face *) * n); |
718 | else | |
7b00de84 JB |
719 | FRAME_PARAM_FACES (f) |
720 | = (struct face **) xrealloc (FRAME_PARAM_FACES (f), | |
cb637678 JB |
721 | sizeof (struct face *) * n); |
722 | ||
7b00de84 JB |
723 | bzero (FRAME_PARAM_FACES (f) + FRAME_N_PARAM_FACES (f), |
724 | (n - FRAME_N_PARAM_FACES (f)) * sizeof (struct face *)); | |
725 | FRAME_N_PARAM_FACES (f) = n; | |
cb637678 JB |
726 | } |
727 | ||
7b00de84 JB |
728 | if (FRAME_PARAM_FACES (f) [id] == 0) |
729 | FRAME_PARAM_FACES (f) [id] = allocate_face (); | |
cb637678 JB |
730 | } |
731 | \f | |
87485d6f | 732 | #ifdef HAVE_X_WINDOWS |
867dd159 RS |
733 | /* Return non-zero if FONT1 and FONT2 have the same width. |
734 | We do not check the height, because we can now deal with | |
735 | different heights. | |
660ed669 | 736 | We assume that they're both character-cell fonts. */ |
867dd159 | 737 | |
660ed669 JB |
738 | int |
739 | same_size_fonts (font1, font2) | |
740 | XFontStruct *font1, *font2; | |
741 | { | |
742 | XCharStruct *bounds1 = &font1->min_bounds; | |
743 | XCharStruct *bounds2 = &font2->min_bounds; | |
744 | ||
46407861 | 745 | return (bounds1->width == bounds2->width); |
660ed669 JB |
746 | } |
747 | ||
729425b1 | 748 | /* Update the line_height of frame F according to the biggest font in |
6717f691 | 749 | any face. Return nonzero if if line_height changes. */ |
729425b1 | 750 | |
6717f691 | 751 | int |
729425b1 RS |
752 | frame_update_line_height (f) |
753 | FRAME_PTR f; | |
754 | { | |
755 | int i; | |
7556890b | 756 | int biggest = FONT_HEIGHT (f->output_data.x->font); |
729425b1 | 757 | |
7556890b RS |
758 | for (i = 0; i < f->output_data.x->n_param_faces; i++) |
759 | if (f->output_data.x->param_faces[i] != 0 | |
760 | && f->output_data.x->param_faces[i]->font != (XFontStruct *) FACE_DEFAULT) | |
729425b1 | 761 | { |
7556890b | 762 | int height = FONT_HEIGHT (f->output_data.x->param_faces[i]->font); |
729425b1 RS |
763 | if (height > biggest) |
764 | biggest = height; | |
765 | } | |
766 | ||
7556890b | 767 | if (biggest == f->output_data.x->line_height) |
6717f691 | 768 | return 0; |
729425b1 | 769 | |
7556890b | 770 | f->output_data.x->line_height = biggest; |
6717f691 | 771 | return 1; |
729425b1 | 772 | } |
87485d6f | 773 | #endif /* not HAVE_X_WINDOWS */ |
867dd159 | 774 | \f |
7b7739b1 JB |
775 | /* Modify face TO by copying from FROM all properties which have |
776 | nondefault settings. */ | |
867dd159 | 777 | |
7b7739b1 JB |
778 | static void |
779 | merge_faces (from, to) | |
780 | struct face *from, *to; | |
781 | { | |
867dd159 RS |
782 | /* Only merge the font if it's the same width as the base font. |
783 | Otherwise ignore it, since we can't handle it properly. */ | |
68a97335 | 784 | if (from->font != (XFontStruct *) FACE_DEFAULT |
68a97335 JB |
785 | && same_size_fonts (from->font, to->font)) |
786 | to->font = from->font; | |
7b7739b1 JB |
787 | if (from->foreground != FACE_DEFAULT) |
788 | to->foreground = from->foreground; | |
789 | if (from->background != FACE_DEFAULT) | |
790 | to->background = from->background; | |
f211082d | 791 | if (from->stipple != FACE_DEFAULT) |
cd0bb842 RS |
792 | { |
793 | to->stipple = from->stipple; | |
794 | to->pixmap_h = from->pixmap_h; | |
795 | to->pixmap_w = from->pixmap_w; | |
796 | } | |
7b7739b1 JB |
797 | if (from->underline) |
798 | to->underline = from->underline; | |
799 | } | |
800 | ||
660ed669 JB |
801 | /* Set up the basic set of facial parameters, based on the frame's |
802 | data; all faces are deltas applied to this. */ | |
867dd159 | 803 | |
660ed669 JB |
804 | static void |
805 | compute_base_face (f, face) | |
806 | FRAME_PTR f; | |
807 | struct face *face; | |
808 | { | |
660ed669 | 809 | face->gc = 0; |
cd0bb842 RS |
810 | face->foreground = FRAME_FOREGROUND_PIXEL (f); |
811 | face->background = FRAME_BACKGROUND_PIXEL (f); | |
812 | face->font = FRAME_FONT (f); | |
582080c1 | 813 | face->stipple = 0; |
660ed669 JB |
814 | face->underline = 0; |
815 | } | |
816 | ||
867dd159 RS |
817 | /* Return the face ID to use to display a special glyph which selects |
818 | FACE_CODE as the face ID, assuming that ordinarily the face would | |
819 | be CURRENT_FACE. F is the frame. */ | |
820 | ||
821 | int | |
822 | compute_glyph_face (f, face_code, current_face) | |
823 | struct frame *f; | |
824 | int face_code, current_face; | |
825 | { | |
826 | struct face face; | |
827 | ||
828 | face = *FRAME_COMPUTED_FACES (f)[current_face]; | |
829 | ||
830 | if (face_code >= 0 && face_code < FRAME_N_PARAM_FACES (f) | |
831 | && FRAME_PARAM_FACES (f) [face_code] != 0) | |
832 | merge_faces (FRAME_PARAM_FACES (f) [face_code], &face); | |
660ed669 | 833 | |
867dd159 RS |
834 | return intern_computed_face (f, &face); |
835 | } | |
2e16580f RS |
836 | |
837 | /* Return the face ID to use to display a special glyph which selects | |
838 | FACE_CODE as the face ID, assuming that ordinarily the face would | |
839 | be CURRENT_FACE. F is the frame. */ | |
840 | ||
841 | int | |
842 | compute_glyph_face_1 (f, face_name, current_face) | |
843 | struct frame *f; | |
844 | Lisp_Object face_name; | |
845 | int current_face; | |
846 | { | |
847 | struct face face; | |
848 | ||
849 | face = *FRAME_COMPUTED_FACES (f)[current_face]; | |
850 | ||
851 | if (!NILP (face_name)) | |
852 | { | |
853 | int facecode = face_name_id_number (f, face_name); | |
854 | if (facecode >= 0 && facecode < FRAME_N_PARAM_FACES (f) | |
855 | && FRAME_PARAM_FACES (f) [facecode] != 0) | |
856 | merge_faces (FRAME_PARAM_FACES (f) [facecode], &face); | |
857 | } | |
858 | ||
859 | return intern_computed_face (f, &face); | |
860 | } | |
867dd159 | 861 | \f |
cb637678 | 862 | /* Return the face ID associated with a buffer position POS. |
7b7739b1 JB |
863 | Store into *ENDPTR the position at which a different face is needed. |
864 | This does not take account of glyphs that specify their own face codes. | |
f6b98e0b | 865 | F is the frame in use for display, and W is a window displaying |
bc0db68d RS |
866 | the current buffer. |
867 | ||
b349f4fb RS |
868 | REGION_BEG, REGION_END delimit the region, so it can be highlighted. |
869 | ||
870 | LIMIT is a position not to scan beyond. That is to limit | |
6f134486 RS |
871 | the time this function can take. |
872 | ||
873 | If MOUSE is nonzero, use the character's mouse-face, not its face. */ | |
bc0db68d | 874 | |
cb637678 | 875 | int |
6f134486 | 876 | compute_char_face (f, w, pos, region_beg, region_end, endptr, limit, mouse) |
7b7739b1 | 877 | struct frame *f; |
f211082d | 878 | struct window *w; |
7b7739b1 | 879 | int pos; |
bc0db68d | 880 | int region_beg, region_end; |
7b7739b1 | 881 | int *endptr; |
b349f4fb | 882 | int limit; |
6f134486 | 883 | int mouse; |
7b7739b1 JB |
884 | { |
885 | struct face face; | |
b6d40e46 | 886 | Lisp_Object prop, position; |
7b7739b1 JB |
887 | int i, j, noverlays; |
888 | int facecode; | |
7b7739b1 | 889 | Lisp_Object *overlay_vec; |
f211082d | 890 | Lisp_Object frame; |
f6b98e0b | 891 | int endpos; |
6f134486 | 892 | Lisp_Object propname; |
f6b98e0b JB |
893 | |
894 | /* W must display the current buffer. We could write this function | |
895 | to use the frame and buffer of W, but right now it doesn't. */ | |
896 | if (XBUFFER (w->buffer) != current_buffer) | |
897 | abort (); | |
f211082d | 898 | |
ac22a6c4 | 899 | XSETFRAME (frame, f); |
7b7739b1 | 900 | |
f6b98e0b | 901 | endpos = ZV; |
bc0db68d RS |
902 | if (pos < region_beg && region_beg < endpos) |
903 | endpos = region_beg; | |
f6b98e0b | 904 | |
e0979810 | 905 | XSETFASTINT (position, pos); |
6f134486 RS |
906 | |
907 | if (mouse) | |
908 | propname = Qmouse_face; | |
909 | else | |
910 | propname = Qface; | |
911 | ||
912 | prop = Fget_text_property (position, propname, w->buffer); | |
913 | ||
b6d40e46 | 914 | { |
b349f4fb | 915 | Lisp_Object limit1, end; |
7b7739b1 | 916 | |
e0979810 | 917 | XSETFASTINT (limit1, (limit < endpos ? limit : endpos)); |
6f134486 | 918 | end = Fnext_single_property_change (position, propname, w->buffer, limit1); |
b6d40e46 JB |
919 | if (INTEGERP (end)) |
920 | endpos = XINT (end); | |
921 | } | |
922 | ||
923 | { | |
f6b98e0b | 924 | int next_overlay; |
9516fe94 RS |
925 | int len; |
926 | ||
927 | /* First try with room for 40 overlays. */ | |
928 | len = 40; | |
929 | overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); | |
930 | ||
7af31819 RS |
931 | noverlays = overlays_at (pos, 0, &overlay_vec, &len, |
932 | &next_overlay, (int *) 0); | |
9516fe94 RS |
933 | |
934 | /* If there are more than 40, | |
935 | make enough space for all, and try again. */ | |
936 | if (noverlays > len) | |
937 | { | |
938 | len = noverlays; | |
939 | overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); | |
82277c2f | 940 | noverlays = overlays_at (pos, 0, &overlay_vec, &len, |
7af31819 | 941 | &next_overlay, (int *) 0); |
9516fe94 | 942 | } |
b6d40e46 | 943 | |
f6b98e0b JB |
944 | if (next_overlay < endpos) |
945 | endpos = next_overlay; | |
b6d40e46 JB |
946 | } |
947 | ||
948 | *endptr = endpos; | |
7b7739b1 JB |
949 | |
950 | /* Optimize the default case. */ | |
bc0db68d RS |
951 | if (noverlays == 0 && NILP (prop) |
952 | && !(pos >= region_beg && pos < region_end)) | |
cb637678 | 953 | return 0; |
7b7739b1 | 954 | |
660ed669 | 955 | compute_base_face (f, &face); |
7b7739b1 | 956 | |
4699e6d2 RS |
957 | if (CONSP (prop)) |
958 | { | |
959 | /* We have a list of faces, merge them in reverse order */ | |
60573a90 RS |
960 | Lisp_Object length; |
961 | int len; | |
4699e6d2 RS |
962 | Lisp_Object *faces; |
963 | ||
60573a90 RS |
964 | length = Fsafe_length (prop); |
965 | len = XFASTINT (length); | |
966 | ||
4699e6d2 RS |
967 | /* Put them into an array */ |
968 | faces = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); | |
969 | for (j = 0; j < len; j++) | |
970 | { | |
971 | faces[j] = Fcar (prop); | |
972 | prop = Fcdr (prop); | |
973 | } | |
974 | /* So that we can merge them in the reverse order */ | |
975 | for (j = len - 1; j >= 0; j--) | |
976 | { | |
977 | facecode = face_name_id_number (f, faces[j]); | |
978 | if (facecode >= 0 && facecode < FRAME_N_PARAM_FACES (f) | |
979 | && FRAME_PARAM_FACES (f) [facecode] != 0) | |
980 | merge_faces (FRAME_PARAM_FACES (f) [facecode], &face); | |
981 | } | |
982 | } | |
983 | else if (!NILP (prop)) | |
7b7739b1 | 984 | { |
1d9fd7fe | 985 | facecode = face_name_id_number (f, prop); |
7b00de84 JB |
986 | if (facecode >= 0 && facecode < FRAME_N_PARAM_FACES (f) |
987 | && FRAME_PARAM_FACES (f) [facecode] != 0) | |
988 | merge_faces (FRAME_PARAM_FACES (f) [facecode], &face); | |
7b7739b1 JB |
989 | } |
990 | ||
4d6ebff8 | 991 | noverlays = sort_overlays (overlay_vec, noverlays, w); |
7b7739b1 JB |
992 | |
993 | /* Now merge the overlay data in that order. */ | |
7b7739b1 JB |
994 | for (i = 0; i < noverlays; i++) |
995 | { | |
6f134486 | 996 | prop = Foverlay_get (overlay_vec[i], propname); |
4699e6d2 RS |
997 | if (CONSP (prop)) |
998 | { | |
999 | /* We have a list of faces, merge them in reverse order */ | |
60573a90 RS |
1000 | Lisp_Object length; |
1001 | int len; | |
4699e6d2 | 1002 | Lisp_Object *faces; |
60573a90 RS |
1003 | |
1004 | length = Fsafe_length (prop); | |
1005 | len = XFASTINT (length); | |
4699e6d2 RS |
1006 | |
1007 | /* Put them into an array */ | |
1008 | faces = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); | |
1009 | for (j = 0; j < len; j++) | |
1010 | { | |
1011 | faces[j] = Fcar (prop); | |
1012 | prop = Fcdr (prop); | |
1013 | } | |
1014 | /* So that we can merge them in the reverse order */ | |
1015 | for (j = len - 1; j >= 0; j--) | |
1016 | { | |
1017 | facecode = face_name_id_number (f, faces[j]); | |
1018 | if (facecode >= 0 && facecode < FRAME_N_PARAM_FACES (f) | |
1019 | && FRAME_PARAM_FACES (f) [facecode] != 0) | |
1020 | merge_faces (FRAME_PARAM_FACES (f) [facecode], &face); | |
1021 | } | |
1022 | } | |
1023 | else if (!NILP (prop)) | |
7b7739b1 JB |
1024 | { |
1025 | Lisp_Object oend; | |
1026 | int oendpos; | |
1027 | ||
1d9fd7fe | 1028 | facecode = face_name_id_number (f, prop); |
7b00de84 JB |
1029 | if (facecode >= 0 && facecode < FRAME_N_PARAM_FACES (f) |
1030 | && FRAME_PARAM_FACES (f) [facecode] != 0) | |
6f134486 | 1031 | merge_faces (FRAME_PARAM_FACES (f)[facecode], &face); |
7b7739b1 | 1032 | |
4d6ebff8 | 1033 | oend = OVERLAY_END (overlay_vec[i]); |
7b7739b1 | 1034 | oendpos = OVERLAY_POSITION (oend); |
f6b98e0b | 1035 | if (oendpos < endpos) |
7b7739b1 JB |
1036 | endpos = oendpos; |
1037 | } | |
1038 | } | |
1039 | ||
bc0db68d RS |
1040 | if (pos >= region_beg && pos < region_end) |
1041 | { | |
1042 | if (region_end < endpos) | |
1043 | endpos = region_end; | |
1044 | if (region_face >= 0 && region_face < next_face_id) | |
6f134486 | 1045 | merge_faces (FRAME_PARAM_FACES (f)[region_face], &face); |
bc0db68d RS |
1046 | } |
1047 | ||
7b7739b1 JB |
1048 | *endptr = endpos; |
1049 | ||
7b00de84 | 1050 | return intern_computed_face (f, &face); |
f211082d | 1051 | } |
867dd159 | 1052 | \f |
660ed669 JB |
1053 | /* Recompute the GC's for the default and modeline faces. |
1054 | We call this after changing frame parameters on which those GC's | |
1055 | depend. */ | |
fffc2367 | 1056 | |
660ed669 JB |
1057 | void |
1058 | recompute_basic_faces (f) | |
1059 | FRAME_PTR f; | |
1060 | { | |
1061 | /* If the frame's faces haven't been initialized yet, don't worry about | |
1062 | this stuff. */ | |
7b00de84 | 1063 | if (FRAME_N_PARAM_FACES (f) < 2) |
660ed669 JB |
1064 | return; |
1065 | ||
1066 | BLOCK_INPUT; | |
1067 | ||
1068 | if (FRAME_DEFAULT_FACE (f)->gc) | |
42120bc7 | 1069 | XFreeGC (FRAME_X_DISPLAY (f), FRAME_DEFAULT_FACE (f)->gc); |
660ed669 | 1070 | if (FRAME_MODE_LINE_FACE (f)->gc) |
42120bc7 | 1071 | XFreeGC (FRAME_X_DISPLAY (f), FRAME_MODE_LINE_FACE (f)->gc); |
7b00de84 JB |
1072 | |
1073 | compute_base_face (f, FRAME_DEFAULT_FACE (f)); | |
1074 | compute_base_face (f, FRAME_MODE_LINE_FACE (f)); | |
1075 | ||
1076 | merge_faces (FRAME_DEFAULT_PARAM_FACE (f), FRAME_DEFAULT_FACE (f)); | |
1077 | merge_faces (FRAME_MODE_LINE_PARAM_FACE (f), FRAME_MODE_LINE_FACE (f)); | |
1078 | ||
42120bc7 RS |
1079 | intern_face (f, FRAME_DEFAULT_FACE (f)); |
1080 | intern_face (f, FRAME_MODE_LINE_FACE (f)); | |
660ed669 JB |
1081 | |
1082 | UNBLOCK_INPUT; | |
1083 | } | |
1084 | ||
1085 | ||
c115973b | 1086 | \f |
cb637678 | 1087 | /* Lisp interface. */ |
c115973b JB |
1088 | |
1089 | DEFUN ("frame-face-alist", Fframe_face_alist, Sframe_face_alist, 1, 1, 0, | |
1090 | "") | |
1091 | (frame) | |
1092 | Lisp_Object frame; | |
1093 | { | |
1094 | CHECK_FRAME (frame, 0); | |
1095 | return XFRAME (frame)->face_alist; | |
1096 | } | |
1097 | ||
1098 | DEFUN ("set-frame-face-alist", Fset_frame_face_alist, Sset_frame_face_alist, | |
1099 | 2, 2, 0, "") | |
1100 | (frame, value) | |
1101 | Lisp_Object frame, value; | |
1102 | { | |
1103 | CHECK_FRAME (frame, 0); | |
1104 | XFRAME (frame)->face_alist = value; | |
1105 | return value; | |
1106 | } | |
1107 | ||
1108 | ||
1109 | DEFUN ("make-face-internal", Fmake_face_internal, Smake_face_internal, 1, 1, 0, | |
1110 | "Create face number FACE-ID on all frames.") | |
1111 | (face_id) | |
1112 | Lisp_Object face_id; | |
1113 | { | |
87485d6f | 1114 | Lisp_Object rest, frame; |
c115973b JB |
1115 | int id = XINT (face_id); |
1116 | ||
f211082d JB |
1117 | CHECK_NUMBER (face_id, 0); |
1118 | if (id < 0 || id >= next_face_id) | |
1119 | error ("Face id out of range"); | |
c115973b | 1120 | |
87485d6f | 1121 | FOR_EACH_FRAME (rest, frame) |
c115973b | 1122 | { |
87485d6f MW |
1123 | if (FRAME_X_P (XFRAME (frame))) |
1124 | ensure_face_ready (XFRAME (frame), id); | |
c115973b JB |
1125 | } |
1126 | return Qnil; | |
1127 | } | |
1128 | ||
1129 | ||
1130 | DEFUN ("set-face-attribute-internal", Fset_face_attribute_internal, | |
1131 | Sset_face_attribute_internal, 4, 4, 0, "") | |
1132 | (face_id, attr_name, attr_value, frame) | |
1133 | Lisp_Object face_id, attr_name, attr_value, frame; | |
1134 | { | |
1135 | struct face *face; | |
1136 | struct frame *f; | |
1137 | int magic_p; | |
1138 | int id; | |
53dfb388 | 1139 | int garbaged = 0; |
c115973b JB |
1140 | |
1141 | CHECK_FRAME (frame, 0); | |
f211082d | 1142 | CHECK_NUMBER (face_id, 0); |
c115973b JB |
1143 | CHECK_SYMBOL (attr_name, 0); |
1144 | ||
1145 | f = XFRAME (frame); | |
1146 | id = XINT (face_id); | |
f211082d JB |
1147 | if (id < 0 || id >= next_face_id) |
1148 | error ("Face id out of range"); | |
c115973b | 1149 | |
b6d40e46 | 1150 | if (! FRAME_X_P (f)) |
b839cea0 | 1151 | return Qnil; |
b6d40e46 | 1152 | |
c115973b | 1153 | ensure_face_ready (f, id); |
7b00de84 | 1154 | face = FRAME_PARAM_FACES (f) [XFASTINT (face_id)]; |
c115973b JB |
1155 | |
1156 | if (EQ (attr_name, intern ("font"))) | |
1157 | { | |
87485d6f | 1158 | #if defined (MSDOS) && !defined (HAVE_X_WINDOWS) |
88d9cecb RS |
1159 | /* The one and only font. Must *not* be zero (which |
1160 | is taken to mean an unused face nowadays). */ | |
1161 | face->font = (XFontStruct *)1 ; | |
87485d6f | 1162 | #else |
f211082d | 1163 | XFontStruct *font = load_font (f, attr_value); |
7556890b | 1164 | if (face->font != f->output_data.x->font) |
ebc64af3 | 1165 | unload_font (f, face->font); |
c115973b | 1166 | face->font = font; |
6717f691 RS |
1167 | if (frame_update_line_height (f)) |
1168 | x_set_window_size (f, 0, f->width, f->height); | |
53dfb388 RS |
1169 | /* Must clear cache, since it might contain the font |
1170 | we just got rid of. */ | |
1171 | garbaged = 1; | |
87485d6f | 1172 | #endif |
c115973b JB |
1173 | } |
1174 | else if (EQ (attr_name, intern ("foreground"))) | |
1175 | { | |
f211082d | 1176 | unsigned long new_color = load_color (f, attr_value); |
c115973b JB |
1177 | unload_color (f, face->foreground); |
1178 | face->foreground = new_color; | |
53dfb388 | 1179 | garbaged = 1; |
c115973b JB |
1180 | } |
1181 | else if (EQ (attr_name, intern ("background"))) | |
1182 | { | |
f211082d | 1183 | unsigned long new_color = load_color (f, attr_value); |
c115973b | 1184 | unload_color (f, face->background); |
87485d6f MW |
1185 | #if defined (MSDOS) && !defined (HAVE_X_WINDOWS) |
1186 | new_color &= ~8; /* Bright would give blinking characters. */ | |
1187 | #endif | |
c115973b | 1188 | face->background = new_color; |
53dfb388 | 1189 | garbaged = 1; |
c115973b | 1190 | } |
c115973b JB |
1191 | else if (EQ (attr_name, intern ("background-pixmap"))) |
1192 | { | |
cd0bb842 RS |
1193 | unsigned int w, h; |
1194 | unsigned long new_pixmap = load_pixmap (f, attr_value, &w, &h); | |
1195 | x_destroy_bitmap (f, face->stipple); | |
f211082d | 1196 | face->stipple = new_pixmap; |
c115973b JB |
1197 | face->pixmap_w = w; |
1198 | face->pixmap_h = h; | |
cd0bb842 | 1199 | garbaged = 1; |
c115973b | 1200 | } |
c115973b JB |
1201 | else if (EQ (attr_name, intern ("underline"))) |
1202 | { | |
1203 | int new = !NILP (attr_value); | |
1204 | face->underline = new; | |
1205 | } | |
1206 | else | |
1207 | error ("unknown face attribute"); | |
1208 | ||
7b00de84 JB |
1209 | if (id == 0 || id == 1) |
1210 | recompute_basic_faces (f); | |
c115973b | 1211 | |
53dfb388 RS |
1212 | /* We must redraw the frame whenever any face font or color changes, |
1213 | because it's possible that a merged (display) face | |
1214 | contains the font or color we just replaced. | |
1215 | And we must inhibit any Expose events until the redraw is done, | |
1216 | since they would try to use the invalid display faces. */ | |
1217 | if (garbaged) | |
584d0634 | 1218 | SET_FRAME_GARBAGED (f); |
584d0634 | 1219 | |
c115973b JB |
1220 | return Qnil; |
1221 | } | |
1222 | ||
1223 | DEFUN ("internal-next-face-id", Finternal_next_face_id, Sinternal_next_face_id, | |
1224 | 0, 0, 0, "") | |
1225 | () | |
1226 | { | |
1227 | return make_number (next_face_id++); | |
1228 | } | |
f211082d JB |
1229 | |
1230 | /* Return the face id for name NAME on frame FRAME. | |
1231 | (It should be the same for all frames, | |
1232 | but it's as easy to use the "right" frame to look it up | |
1233 | as to use any other one.) */ | |
1234 | ||
1d9fd7fe JB |
1235 | int |
1236 | face_name_id_number (f, name) | |
1237 | FRAME_PTR f; | |
1238 | Lisp_Object name; | |
f211082d JB |
1239 | { |
1240 | Lisp_Object tem; | |
1241 | ||
82411f65 | 1242 | tem = Fcdr (assq_no_quit (name, f->face_alist)); |
b6d40e46 JB |
1243 | if (NILP (tem)) |
1244 | return 0; | |
f211082d JB |
1245 | CHECK_VECTOR (tem, 0); |
1246 | tem = XVECTOR (tem)->contents[2]; | |
1247 | CHECK_NUMBER (tem, 0); | |
1248 | return XINT (tem); | |
1249 | } | |
c115973b | 1250 | \f |
cb637678 JB |
1251 | /* Emacs initialization. */ |
1252 | ||
c115973b | 1253 | void |
f211082d | 1254 | syms_of_xfaces () |
c115973b | 1255 | { |
f211082d JB |
1256 | Qface = intern ("face"); |
1257 | staticpro (&Qface); | |
6f134486 RS |
1258 | Qmouse_face = intern ("mouse-face"); |
1259 | staticpro (&Qmouse_face); | |
cd0bb842 RS |
1260 | Qpixmap_spec_p = intern ("pixmap-spec-p"); |
1261 | staticpro (&Qpixmap_spec_p); | |
f211082d | 1262 | |
bc0db68d RS |
1263 | DEFVAR_INT ("region-face", ®ion_face, |
1264 | "Face number to use to highlight the region\n\ | |
1265 | The region is highlighted with this face\n\ | |
1266 | when Transient Mark mode is enabled and the mark is active."); | |
1267 | ||
87485d6f | 1268 | #ifdef HAVE_X_WINDOWS |
cd0bb842 | 1269 | defsubr (&Spixmap_spec_p); |
87485d6f | 1270 | #endif |
c115973b JB |
1271 | defsubr (&Sframe_face_alist); |
1272 | defsubr (&Sset_frame_face_alist); | |
1273 | defsubr (&Smake_face_internal); | |
1274 | defsubr (&Sset_face_attribute_internal); | |
1275 | defsubr (&Sinternal_next_face_id); | |
1276 | } | |
cb637678 | 1277 | |
87485d6f | 1278 | #endif /* HAVE_FACES */ |