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fbd6baed | 1 | /* "Face" primitives under the Win32 API. |
ee78dc32 GV |
2 | Copyright (C) 1993, 1994, 1995 Free Software Foundation. |
3 | ||
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 | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
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. */ | |
ee78dc32 | 20 | |
fbd6baed | 21 | /* Ported xfaces.c for w32 - Kevin Gallo */ |
ee78dc32 GV |
22 | |
23 | #include <sys/types.h> | |
24 | #include <sys/stat.h> | |
25 | ||
26 | #include <config.h> | |
27 | #include "lisp.h" | |
28 | ||
29 | #include "w32term.h" | |
30 | #include "buffer.h" | |
31 | #include "dispextern.h" | |
32 | #include "frame.h" | |
33 | #include "blockinput.h" | |
34 | #include "window.h" | |
35 | #include "intervals.h" | |
36 | ||
37 | \f | |
38 | /* An explanation of the face data structures. */ | |
39 | ||
40 | /* ========================= Face Data Structures ========================= | |
41 | ||
42 | Let FACE-NAME be a symbol naming a face. | |
43 | ||
44 | Let FACE-VECTOR be (assq FACE-NAME (frame-face-alist FRAME)) | |
45 | FACE-VECTOR is either nil, or a vector of the form | |
46 | [face NAME ID FONT FOREGROUND BACKGROUND BACKGROUND-PIXMAP UNDERLINE-P] | |
47 | where | |
48 | face is the symbol `face', | |
49 | NAME is the symbol with which this vector is associated (a backpointer), | |
50 | ID is the face ID, an integer used internally by the C code to identify | |
51 | the face, | |
52 | FONT, FOREGROUND, and BACKGROUND are strings naming the fonts and colors | |
53 | to use with the face, | |
54 | BACKGROUND-PIXMAP is the name of an x bitmap filename, which we don't | |
55 | use right now, and | |
56 | UNDERLINE-P is non-nil if the face should be underlined. | |
57 | If any of these elements are nil, that parameter is considered | |
58 | unspecified; parameters from faces specified by lower-priority | |
59 | overlays or text properties, or the parameters of the frame itself, | |
60 | can show through. (lisp/faces.el maintains these lists.) | |
61 | ||
62 | (assq FACE-NAME global-face-data) returns a vector describing the | |
63 | global parameters for that face. | |
64 | ||
65 | Let PARAM-FACE be FRAME->display.x->param_faces[Faref (FACE-VECTOR, 2)]. | |
66 | PARAM_FACE is a struct face whose members are the Xlib analogues of | |
67 | the parameters in FACE-VECTOR. If an element of FACE-VECTOR is | |
68 | nil, then the corresponding member of PARAM_FACE is FACE_DEFAULT. | |
69 | These faces are called "parameter faces", because they're the ones | |
70 | lisp manipulates to control what gets displayed. Elements 0 and 1 | |
71 | of FRAME->display.x->param_faces are special - they describe the | |
72 | default and mode line faces. None of the faces in param_faces have | |
8e6208c5 | 73 | GC's. (See src/dispextern.h for the definition of struct face. |
ee78dc32 GV |
74 | lisp/faces.el maintains the isomorphism between face_alist and |
75 | param_faces.) | |
76 | ||
77 | The functions compute_char_face and compute_glyph_face find and | |
78 | combine the parameter faces associated with overlays and text | |
79 | properties. The resulting faces are called "computed faces"; none | |
80 | of their members are FACE_DEFAULT; they are completely specified. | |
81 | They then call intern_compute_face to search | |
82 | FRAME->display.x->computed_faces for a matching face, add one if | |
83 | none is found, and return the index into | |
84 | FRAME->display.x->computed_faces. FRAME's glyph matrices use these | |
85 | indices to record the faces of the matrix characters, and the X | |
86 | display hooks consult compute_faces to decide how to display these | |
87 | characters. Elements 0 and 1 of computed_faces always describe the | |
88 | default and mode-line faces. | |
89 | ||
90 | Each computed face belongs to a particular frame. | |
91 | ||
92 | Computed faces have graphics contexts some of the time. | |
93 | intern_face builds a GC for a specified computed face | |
94 | if it doesn't have one already. | |
95 | clear_face_cache clears out the GCs of all computed faces. | |
96 | This is done from time to time so that we don't hold on to | |
97 | lots of GCs that are no longer needed. | |
98 | ||
99 | Constraints: | |
100 | ||
101 | Symbols naming faces must have associations on all frames; for any | |
102 | FRAME, for all FACE-NAME, if (assq FACE-NAME (frame-face-alist | |
103 | FRAME)) is non-nil, it must be non-nil for all frames. | |
104 | ||
105 | Analogously, indices into param_faces must be valid on all frames; | |
106 | if param_faces[i] is a non-zero face pointer on one frame, then it | |
107 | must be filled in on all frames. Code assumes that face ID's can | |
108 | be used on any frame. | |
109 | ||
110 | Some subtleties: | |
111 | ||
112 | Why do we keep param_faces and computed_faces separate? | |
113 | computed_faces contains an element for every combination of facial | |
114 | parameters we have ever displayed. indices into param_faces have | |
115 | to be valid on all frames. If they were the same array, then that | |
116 | array would grow very large on all frames, because any facial | |
117 | combination displayed on any frame would need to be a valid entry | |
118 | on all frames. */ | |
119 | \f | |
120 | /* Definitions and declarations. */ | |
121 | ||
122 | /* The number of face-id's in use (same for all frames). */ | |
123 | static int next_face_id; | |
124 | ||
125 | /* The number of the face to use to indicate the region. */ | |
126 | static int region_face; | |
127 | ||
128 | /* This is what appears in a slot in a face to signify that the face | |
129 | does not specify that display aspect. */ | |
130 | #define FACE_DEFAULT (~0) | |
131 | ||
132 | Lisp_Object Qface, Qmouse_face; | |
133 | Lisp_Object Qpixmap_spec_p; | |
134 | ||
135 | int face_name_id_number ( /* FRAME_PTR, Lisp_Object name */ ); | |
136 | ||
137 | struct face *intern_face ( /* FRAME_PTR, struct face * */ ); | |
138 | static int new_computed_face ( /* FRAME_PTR, struct face * */ ); | |
139 | static int intern_computed_face ( /* FRAME_PTR, struct face * */ ); | |
140 | static void ensure_face_ready ( /* FRAME_PTR, int id */ ); | |
141 | void recompute_basic_faces ( /* FRAME_PTR f */ ); | |
142 | \f | |
143 | /* Allocating, copying, and comparing struct faces. */ | |
144 | ||
145 | /* Allocate a new face */ | |
146 | static struct face * | |
147 | allocate_face () | |
148 | { | |
149 | struct face *result = (struct face *) xmalloc (sizeof (struct face)); | |
150 | bzero (result, sizeof (struct face)); | |
151 | result->font = (XFontStruct *) FACE_DEFAULT; | |
152 | result->foreground = FACE_DEFAULT; | |
153 | result->background = FACE_DEFAULT; | |
154 | result->stipple = FACE_DEFAULT; | |
155 | return result; | |
156 | } | |
157 | ||
158 | /* Make a new face that's a copy of an existing one. */ | |
159 | static struct face * | |
160 | copy_face (face) | |
161 | struct face *face; | |
162 | { | |
163 | struct face *result = allocate_face (); | |
164 | ||
165 | result->font = face->font; | |
166 | result->foreground = face->foreground; | |
167 | result->background = face->background; | |
168 | result->stipple = face->stipple; | |
169 | result->underline = face->underline; | |
170 | result->pixmap_h = face->pixmap_h; | |
171 | result->pixmap_w = face->pixmap_w; | |
172 | ||
173 | return result; | |
174 | } | |
175 | ||
176 | static int | |
177 | face_eql (face1, face2) | |
178 | struct face *face1, *face2; | |
179 | { | |
180 | return ( face1->font == face2->font | |
181 | && face1->foreground == face2->foreground | |
182 | && face1->background == face2->background | |
183 | && face1->stipple == face2->stipple | |
184 | && face1->underline == face2->underline); | |
185 | } | |
186 | \f | |
187 | /* Managing graphics contexts of faces. */ | |
188 | ||
189 | /* Given a computed face, construct its graphics context if necessary. */ | |
190 | ||
191 | struct face * | |
192 | intern_face (f, face) | |
193 | struct frame *f; | |
194 | struct face *face; | |
195 | { | |
196 | face->gc = NULL; | |
197 | ||
198 | return face; | |
199 | } | |
200 | ||
201 | /* Clear out all graphics contexts for all computed faces | |
202 | except for the default and mode line faces. | |
203 | This should be done from time to time just to avoid | |
204 | keeping too many graphics contexts that are no longer needed. */ | |
205 | ||
206 | void | |
207 | clear_face_cache () | |
208 | { | |
209 | /* Nothing extra */ | |
210 | } | |
211 | \f | |
212 | /* Allocating, freeing, and duplicating fonts, colors, and pixmaps. | |
213 | ||
214 | These functions operate on param faces only. | |
215 | Computed faces get their fonts, colors and pixmaps | |
216 | by merging param faces. */ | |
217 | ||
218 | static XFontStruct * | |
219 | load_font (f, name) | |
220 | struct frame *f; | |
221 | Lisp_Object name; | |
222 | { | |
223 | XFontStruct *font; | |
224 | ||
225 | if (NILP (name)) | |
226 | return (XFontStruct *) FACE_DEFAULT; | |
227 | ||
228 | CHECK_STRING (name, 0); | |
229 | BLOCK_INPUT; | |
fbd6baed | 230 | font = w32_load_font (FRAME_W32_DISPLAY_INFO (f), (char *) XSTRING (name)->data); |
ee78dc32 GV |
231 | UNBLOCK_INPUT; |
232 | ||
233 | if (! font) | |
234 | Fsignal (Qerror, Fcons (build_string ("undefined font"), | |
235 | Fcons (name, Qnil))); | |
236 | return font; | |
237 | } | |
238 | ||
239 | static void | |
240 | unload_font (f, font) | |
241 | struct frame *f; | |
242 | XFontStruct *font; | |
243 | { | |
244 | if (!font || font == ((XFontStruct *) FACE_DEFAULT)) | |
245 | return; | |
246 | ||
247 | BLOCK_INPUT; | |
fbd6baed | 248 | w32_unload_font (FRAME_W32_DISPLAY_INFO (f), font); |
ee78dc32 GV |
249 | UNBLOCK_INPUT; |
250 | } | |
251 | ||
252 | static unsigned long | |
253 | load_color (f, name) | |
254 | struct frame *f; | |
255 | Lisp_Object name; | |
256 | { | |
257 | COLORREF color; | |
258 | int result; | |
259 | ||
260 | if (NILP (name)) | |
261 | return FACE_DEFAULT; | |
262 | ||
263 | CHECK_STRING (name, 0); | |
264 | /* if the colormap is full, defined_color will return a best match | |
265 | to the values in an an existing cell. */ | |
266 | result = defined_color(f, (char *) XSTRING (name)->data, &color, 1); | |
267 | if (! result) | |
268 | Fsignal (Qerror, Fcons (build_string ("undefined color"), | |
269 | Fcons (name, Qnil))); | |
270 | return (unsigned long) color; | |
271 | } | |
272 | ||
273 | static void | |
274 | unload_color (f, pixel) | |
275 | struct frame *f; | |
276 | unsigned long pixel; | |
277 | { | |
278 | } | |
279 | ||
280 | DEFUN ("pixmap-spec-p", Fpixmap_spec_p, Spixmap_spec_p, 1, 1, 0, | |
281 | "Return t if ARG is a valid pixmap specification.") | |
282 | (arg) | |
283 | Lisp_Object arg; | |
284 | { | |
285 | Lisp_Object height, width; | |
286 | ||
287 | return ((STRINGP (arg) | |
288 | || (CONSP (arg) | |
289 | && CONSP (XCONS (arg)->cdr) | |
290 | && CONSP (XCONS (XCONS (arg)->cdr)->cdr) | |
291 | && NILP (XCONS (XCONS (XCONS (arg)->cdr)->cdr)->cdr) | |
292 | && (width = XCONS (arg)->car, INTEGERP (width)) | |
293 | && (height = XCONS (XCONS (arg)->cdr)->car, INTEGERP (height)) | |
294 | && STRINGP (XCONS (XCONS (XCONS (arg)->cdr)->cdr)->car) | |
295 | && XINT (width) > 0 | |
296 | && XINT (height) > 0 | |
297 | /* The string must have enough bits for width * height. */ | |
298 | && ((XSTRING (XCONS (XCONS (XCONS (arg)->cdr)->cdr)->car)->size | |
299 | * (BITS_PER_INT / sizeof (int))) | |
300 | >= XFASTINT (width) * XFASTINT (height)))) | |
301 | ? Qt : Qnil); | |
302 | } | |
303 | ||
304 | /* Load a bitmap according to NAME (which is either a file name | |
305 | or a pixmap spec). Return the bitmap_id (see xfns.c) | |
306 | or get an error if NAME is invalid. | |
307 | ||
308 | Store the bitmap width in *W_PTR and height in *H_PTR. */ | |
309 | ||
310 | static long | |
311 | load_pixmap (f, name, w_ptr, h_ptr) | |
312 | FRAME_PTR f; | |
313 | Lisp_Object name; | |
314 | unsigned int *w_ptr, *h_ptr; | |
315 | { | |
316 | int bitmap_id; | |
317 | Lisp_Object tem; | |
318 | ||
319 | if (NILP (name)) | |
320 | return FACE_DEFAULT; | |
321 | ||
322 | tem = Fpixmap_spec_p (name); | |
323 | if (NILP (tem)) | |
324 | wrong_type_argument (Qpixmap_spec_p, name); | |
325 | ||
326 | BLOCK_INPUT; | |
327 | ||
328 | if (CONSP (name)) | |
329 | { | |
330 | /* Decode a bitmap spec into a bitmap. */ | |
331 | ||
332 | int h, w; | |
333 | Lisp_Object bits; | |
334 | ||
335 | w = XINT (Fcar (name)); | |
336 | h = XINT (Fcar (Fcdr (name))); | |
337 | bits = Fcar (Fcdr (Fcdr (name))); | |
338 | ||
339 | bitmap_id = x_create_bitmap_from_data (f, XSTRING (bits)->data, | |
340 | w, h); | |
341 | } | |
342 | else | |
343 | { | |
344 | /* It must be a string -- a file name. */ | |
345 | bitmap_id = x_create_bitmap_from_file (f, name); | |
346 | } | |
347 | UNBLOCK_INPUT; | |
348 | ||
349 | if (bitmap_id < 0) | |
350 | Fsignal (Qerror, Fcons (build_string ("invalid or undefined bitmap"), | |
351 | Fcons (name, Qnil))); | |
352 | ||
353 | *w_ptr = x_bitmap_width (f, bitmap_id); | |
354 | *h_ptr = x_bitmap_height (f, bitmap_id); | |
355 | ||
356 | return bitmap_id; | |
357 | } | |
358 | ||
359 | \f | |
360 | /* Managing parameter face arrays for frames. */ | |
361 | ||
362 | void | |
363 | init_frame_faces (f) | |
364 | FRAME_PTR f; | |
365 | { | |
366 | ensure_face_ready (f, 0); | |
367 | ensure_face_ready (f, 1); | |
368 | ||
369 | FRAME_N_COMPUTED_FACES (f) = 0; | |
370 | FRAME_SIZE_COMPUTED_FACES (f) = 0; | |
371 | ||
372 | new_computed_face (f, FRAME_PARAM_FACES (f)[0]); | |
373 | new_computed_face (f, FRAME_PARAM_FACES (f)[1]); | |
374 | recompute_basic_faces (f); | |
375 | ||
ee78dc32 GV |
376 | /* Find another frame. */ |
377 | { | |
378 | Lisp_Object tail, frame, result; | |
379 | ||
380 | result = Qnil; | |
381 | FOR_EACH_FRAME (tail, frame) | |
fbd6baed | 382 | if (FRAME_W32_P (XFRAME (frame)) |
ee78dc32 GV |
383 | && XFRAME (frame) != f) |
384 | { | |
385 | result = frame; | |
386 | break; | |
387 | } | |
388 | ||
389 | /* If we didn't find any X frames other than f, then we don't need | |
390 | any faces other than 0 and 1, so we're okay. Otherwise, make | |
391 | sure that all faces valid on the selected frame are also valid | |
392 | on this new frame. */ | |
393 | if (FRAMEP (result)) | |
394 | { | |
395 | int i; | |
396 | int n_faces = FRAME_N_PARAM_FACES (XFRAME (result)); | |
397 | struct face **faces = FRAME_PARAM_FACES (XFRAME (result)); | |
398 | ||
399 | for (i = 2; i < n_faces; i++) | |
400 | if (faces[i]) | |
401 | ensure_face_ready (f, i); | |
402 | } | |
403 | } | |
ee78dc32 GV |
404 | } |
405 | ||
406 | ||
407 | /* Called from Fdelete_frame. */ | |
408 | ||
409 | void | |
410 | free_frame_faces (f) | |
411 | struct frame *f; | |
412 | { | |
413 | int i; | |
414 | ||
415 | BLOCK_INPUT; | |
416 | ||
417 | for (i = 0; i < FRAME_N_PARAM_FACES (f); i++) | |
418 | { | |
419 | struct face *face = FRAME_PARAM_FACES (f) [i]; | |
420 | if (face) | |
421 | { | |
422 | unload_font (f, face->font); | |
423 | unload_color (f, face->foreground); | |
424 | unload_color (f, face->background); | |
425 | x_destroy_bitmap (f, face->stipple); | |
426 | xfree (face); | |
427 | } | |
428 | } | |
429 | xfree (FRAME_PARAM_FACES (f)); | |
430 | FRAME_PARAM_FACES (f) = 0; | |
431 | FRAME_N_PARAM_FACES (f) = 0; | |
432 | ||
433 | /* All faces in FRAME_COMPUTED_FACES use resources copied from | |
434 | FRAME_PARAM_FACES; we can free them without fuss. | |
435 | But we do free the GCs and the face objects themselves. */ | |
436 | for (i = 0; i < FRAME_N_COMPUTED_FACES (f); i++) | |
437 | { | |
438 | struct face *face = FRAME_COMPUTED_FACES (f) [i]; | |
439 | if (face) | |
440 | { | |
441 | xfree (face); | |
442 | } | |
443 | } | |
444 | xfree (FRAME_COMPUTED_FACES (f)); | |
445 | FRAME_COMPUTED_FACES (f) = 0; | |
446 | FRAME_N_COMPUTED_FACES (f) = 0; | |
447 | ||
448 | UNBLOCK_INPUT; | |
449 | } | |
450 | \f | |
451 | /* Interning faces in a frame's face array. */ | |
452 | ||
453 | static int | |
454 | new_computed_face (f, new_face) | |
455 | struct frame *f; | |
456 | struct face *new_face; | |
457 | { | |
458 | int i = FRAME_N_COMPUTED_FACES (f); | |
459 | ||
460 | if (i >= FRAME_SIZE_COMPUTED_FACES (f)) | |
461 | { | |
462 | int new_size = i + 32; | |
463 | ||
464 | FRAME_COMPUTED_FACES (f) | |
465 | = (struct face **) (FRAME_SIZE_COMPUTED_FACES (f) == 0 | |
466 | ? xmalloc (new_size * sizeof (struct face *)) | |
467 | : xrealloc (FRAME_COMPUTED_FACES (f), | |
468 | new_size * sizeof (struct face *))); | |
469 | FRAME_SIZE_COMPUTED_FACES (f) = new_size; | |
470 | } | |
471 | ||
472 | i = FRAME_N_COMPUTED_FACES (f)++; | |
473 | FRAME_COMPUTED_FACES (f)[i] = copy_face (new_face); | |
474 | return i; | |
475 | } | |
476 | ||
477 | ||
478 | /* Find a match for NEW_FACE in a FRAME's computed face array, and add | |
479 | it if we don't find one. */ | |
480 | static int | |
481 | intern_computed_face (f, new_face) | |
482 | struct frame *f; | |
483 | struct face *new_face; | |
484 | { | |
485 | int len = FRAME_N_COMPUTED_FACES (f); | |
486 | int i; | |
487 | ||
488 | /* Search for a computed face already on F equivalent to FACE. */ | |
489 | for (i = 0; i < len; i++) | |
490 | { | |
491 | if (! FRAME_COMPUTED_FACES (f)[i]) | |
492 | abort (); | |
493 | if (face_eql (new_face, FRAME_COMPUTED_FACES (f)[i])) | |
494 | return i; | |
495 | } | |
496 | ||
497 | /* We didn't find one; add a new one. */ | |
498 | return new_computed_face (f, new_face); | |
499 | } | |
500 | ||
501 | /* Make parameter face id ID valid on frame F. */ | |
502 | ||
503 | static void | |
504 | ensure_face_ready (f, id) | |
505 | struct frame *f; | |
506 | int id; | |
507 | { | |
508 | if (FRAME_N_PARAM_FACES (f) <= id) | |
509 | { | |
510 | int n = id + 10; | |
511 | int i; | |
512 | if (!FRAME_N_PARAM_FACES (f)) | |
513 | FRAME_PARAM_FACES (f) | |
514 | = (struct face **) xmalloc (sizeof (struct face *) * n); | |
515 | else | |
516 | FRAME_PARAM_FACES (f) | |
517 | = (struct face **) xrealloc (FRAME_PARAM_FACES (f), | |
518 | sizeof (struct face *) * n); | |
519 | ||
520 | bzero (FRAME_PARAM_FACES (f) + FRAME_N_PARAM_FACES (f), | |
521 | (n - FRAME_N_PARAM_FACES (f)) * sizeof (struct face *)); | |
522 | FRAME_N_PARAM_FACES (f) = n; | |
523 | } | |
524 | ||
525 | if (FRAME_PARAM_FACES (f) [id] == 0) | |
526 | FRAME_PARAM_FACES (f) [id] = allocate_face (); | |
527 | } | |
528 | \f | |
529 | /* Return non-zero if FONT1 and FONT2 have the same width. | |
530 | We do not check the height, because we can now deal with | |
531 | different heights. | |
532 | We assume that they're both character-cell fonts. */ | |
533 | ||
534 | int | |
535 | same_size_fonts (font1, font2) | |
536 | XFontStruct *font1, *font2; | |
537 | { | |
538 | return (FONT_WIDTH(font1) == FONT_WIDTH(font2)); | |
539 | } | |
540 | ||
541 | /* Update the line_height of frame F according to the biggest font in | |
542 | any face. Return nonzero if if line_height changes. */ | |
543 | ||
544 | int | |
545 | frame_update_line_height (f) | |
546 | FRAME_PTR f; | |
547 | { | |
548 | int i; | |
fbd6baed | 549 | int biggest = FONT_HEIGHT (f->output_data.w32->font); |
ee78dc32 | 550 | |
fbd6baed GV |
551 | for (i = 0; i < f->output_data.w32->n_param_faces; i++) |
552 | if (f->output_data.w32->param_faces[i] != 0 | |
553 | && f->output_data.w32->param_faces[i]->font != (XFontStruct *) FACE_DEFAULT) | |
ee78dc32 | 554 | { |
fbd6baed | 555 | int height = FONT_HEIGHT (f->output_data.w32->param_faces[i]->font); |
ee78dc32 GV |
556 | if (height > biggest) |
557 | biggest = height; | |
558 | } | |
559 | ||
fbd6baed | 560 | if (biggest == f->output_data.w32->line_height) |
ee78dc32 GV |
561 | return 0; |
562 | ||
fbd6baed | 563 | f->output_data.w32->line_height = biggest; |
ee78dc32 GV |
564 | return 1; |
565 | } | |
566 | \f | |
567 | /* Modify face TO by copying from FROM all properties which have | |
568 | nondefault settings. */ | |
569 | ||
570 | static void | |
571 | merge_faces (from, to) | |
572 | struct face *from, *to; | |
573 | { | |
574 | /* Only merge the font if it's the same width as the base font. | |
575 | Otherwise ignore it, since we can't handle it properly. */ | |
576 | if (from->font != (XFontStruct *) FACE_DEFAULT | |
577 | && same_size_fonts (from->font, to->font)) | |
578 | to->font = from->font; | |
579 | if (from->foreground != FACE_DEFAULT) | |
580 | to->foreground = from->foreground; | |
581 | if (from->background != FACE_DEFAULT) | |
582 | to->background = from->background; | |
583 | if (from->stipple != FACE_DEFAULT) | |
584 | { | |
585 | to->stipple = from->stipple; | |
586 | to->pixmap_h = from->pixmap_h; | |
587 | to->pixmap_w = from->pixmap_w; | |
588 | } | |
589 | if (from->underline) | |
590 | to->underline = from->underline; | |
591 | } | |
592 | ||
593 | /* Set up the basic set of facial parameters, based on the frame's | |
594 | data; all faces are deltas applied to this. */ | |
595 | ||
596 | static void | |
597 | compute_base_face (f, face) | |
598 | FRAME_PTR f; | |
599 | struct face *face; | |
600 | { | |
601 | face->gc = 0; | |
602 | face->foreground = FRAME_FOREGROUND_PIXEL (f); | |
603 | face->background = FRAME_BACKGROUND_PIXEL (f); | |
604 | face->font = FRAME_FONT (f); | |
605 | face->stipple = 0; | |
606 | face->underline = 0; | |
607 | } | |
608 | ||
609 | /* Return the face ID to use to display a special glyph which selects | |
610 | FACE_CODE as the face ID, assuming that ordinarily the face would | |
611 | be CURRENT_FACE. F is the frame. */ | |
612 | ||
613 | int | |
614 | compute_glyph_face (f, face_code, current_face) | |
615 | struct frame *f; | |
616 | int face_code, current_face; | |
617 | { | |
618 | struct face face; | |
619 | ||
620 | face = *FRAME_COMPUTED_FACES (f)[current_face]; | |
621 | ||
622 | if (face_code >= 0 && face_code < FRAME_N_PARAM_FACES (f) | |
623 | && FRAME_PARAM_FACES (f) [face_code] != 0) | |
624 | merge_faces (FRAME_PARAM_FACES (f) [face_code], &face); | |
625 | ||
626 | return intern_computed_face (f, &face); | |
627 | } | |
628 | ||
629 | /* Return the face ID to use to display a special glyph which selects | |
630 | FACE_CODE as the face ID, assuming that ordinarily the face would | |
631 | be CURRENT_FACE. F is the frame. */ | |
632 | ||
633 | int | |
634 | compute_glyph_face_1 (f, face_name, current_face) | |
635 | struct frame *f; | |
636 | Lisp_Object face_name; | |
637 | int current_face; | |
638 | { | |
639 | struct face face; | |
640 | ||
641 | face = *FRAME_COMPUTED_FACES (f)[current_face]; | |
642 | ||
643 | if (!NILP (face_name)) | |
644 | { | |
645 | int facecode = face_name_id_number (f, face_name); | |
646 | if (facecode >= 0 && facecode < FRAME_N_PARAM_FACES (f) | |
647 | && FRAME_PARAM_FACES (f) [facecode] != 0) | |
648 | merge_faces (FRAME_PARAM_FACES (f) [facecode], &face); | |
649 | } | |
650 | ||
651 | return intern_computed_face (f, &face); | |
652 | } | |
653 | \f | |
654 | /* Return the face ID associated with a buffer position POS. | |
655 | Store into *ENDPTR the position at which a different face is needed. | |
656 | This does not take account of glyphs that specify their own face codes. | |
657 | F is the frame in use for display, and W is a window displaying | |
658 | the current buffer. | |
659 | ||
660 | REGION_BEG, REGION_END delimit the region, so it can be highlighted. | |
661 | ||
662 | LIMIT is a position not to scan beyond. That is to limit | |
663 | the time this function can take. | |
664 | ||
665 | If MOUSE is nonzero, use the character's mouse-face, not its face. */ | |
666 | ||
667 | int | |
668 | compute_char_face (f, w, pos, region_beg, region_end, endptr, limit, mouse) | |
669 | struct frame *f; | |
670 | struct window *w; | |
671 | int pos; | |
672 | int region_beg, region_end; | |
673 | int *endptr; | |
674 | int limit; | |
675 | int mouse; | |
676 | { | |
677 | struct face face; | |
678 | Lisp_Object prop, position; | |
679 | int i, j, noverlays; | |
680 | int facecode; | |
681 | Lisp_Object *overlay_vec; | |
682 | Lisp_Object frame; | |
683 | int endpos; | |
684 | Lisp_Object propname; | |
685 | ||
686 | /* W must display the current buffer. We could write this function | |
687 | to use the frame and buffer of W, but right now it doesn't. */ | |
688 | if (XBUFFER (w->buffer) != current_buffer) | |
689 | abort (); | |
690 | ||
691 | XSETFRAME (frame, f); | |
692 | ||
693 | endpos = ZV; | |
694 | if (pos < region_beg && region_beg < endpos) | |
695 | endpos = region_beg; | |
696 | ||
697 | XSETFASTINT (position, pos); | |
698 | ||
699 | if (mouse) | |
700 | propname = Qmouse_face; | |
701 | else | |
702 | propname = Qface; | |
703 | ||
704 | prop = Fget_text_property (position, propname, w->buffer); | |
705 | ||
706 | { | |
707 | Lisp_Object limit1, end; | |
708 | ||
709 | XSETFASTINT (limit1, (limit < endpos ? limit : endpos)); | |
710 | end = Fnext_single_property_change (position, propname, w->buffer, limit1); | |
711 | if (INTEGERP (end)) | |
712 | endpos = XINT (end); | |
713 | } | |
714 | ||
715 | { | |
716 | int next_overlay; | |
717 | int len; | |
718 | ||
719 | /* First try with room for 40 overlays. */ | |
720 | len = 40; | |
721 | overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); | |
722 | ||
723 | noverlays = overlays_at (pos, 0, &overlay_vec, &len, | |
724 | &next_overlay, (int *) 0); | |
725 | ||
726 | /* If there are more than 40, | |
727 | make enough space for all, and try again. */ | |
728 | if (noverlays > len) | |
729 | { | |
730 | len = noverlays; | |
731 | overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); | |
732 | noverlays = overlays_at (pos, 0, &overlay_vec, &len, | |
733 | &next_overlay, (int *) 0); | |
734 | } | |
735 | ||
736 | if (next_overlay < endpos) | |
737 | endpos = next_overlay; | |
738 | } | |
739 | ||
740 | *endptr = endpos; | |
741 | ||
742 | /* Optimize the default case. */ | |
743 | if (noverlays == 0 && NILP (prop) | |
744 | && !(pos >= region_beg && pos < region_end)) | |
745 | return 0; | |
746 | ||
747 | compute_base_face (f, &face); | |
748 | ||
749 | if (CONSP (prop)) | |
750 | { | |
751 | /* We have a list of faces, merge them in reverse order */ | |
752 | Lisp_Object length = Flength (prop); | |
753 | int len = XINT (length); | |
754 | Lisp_Object *faces; | |
755 | ||
756 | /* Put them into an array */ | |
757 | faces = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); | |
758 | for (j = 0; j < len; j++) | |
759 | { | |
760 | faces[j] = Fcar (prop); | |
761 | prop = Fcdr (prop); | |
762 | } | |
763 | /* So that we can merge them in the reverse order */ | |
764 | for (j = len - 1; j >= 0; j--) | |
765 | { | |
766 | facecode = face_name_id_number (f, faces[j]); | |
767 | if (facecode >= 0 && facecode < FRAME_N_PARAM_FACES (f) | |
768 | && FRAME_PARAM_FACES (f) [facecode] != 0) | |
769 | merge_faces (FRAME_PARAM_FACES (f) [facecode], &face); | |
770 | } | |
771 | } | |
772 | else if (!NILP (prop)) | |
773 | { | |
774 | facecode = face_name_id_number (f, prop); | |
775 | if (facecode >= 0 && facecode < FRAME_N_PARAM_FACES (f) | |
776 | && FRAME_PARAM_FACES (f) [facecode] != 0) | |
777 | merge_faces (FRAME_PARAM_FACES (f) [facecode], &face); | |
778 | } | |
779 | ||
780 | noverlays = sort_overlays (overlay_vec, noverlays, w); | |
781 | ||
782 | /* Now merge the overlay data in that order. */ | |
783 | for (i = 0; i < noverlays; i++) | |
784 | { | |
785 | prop = Foverlay_get (overlay_vec[i], propname); | |
786 | if (CONSP (prop)) | |
787 | { | |
788 | /* We have a list of faces, merge them in reverse order */ | |
789 | Lisp_Object length = Flength (prop); | |
790 | int len = XINT (length); | |
791 | Lisp_Object *faces; | |
792 | int i; | |
793 | ||
794 | /* Put them into an array */ | |
795 | faces = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); | |
796 | for (j = 0; j < len; j++) | |
797 | { | |
798 | faces[j] = Fcar (prop); | |
799 | prop = Fcdr (prop); | |
800 | } | |
801 | /* So that we can merge them in the reverse order */ | |
802 | for (j = len - 1; j >= 0; j--) | |
803 | { | |
804 | facecode = face_name_id_number (f, faces[j]); | |
805 | if (facecode >= 0 && facecode < FRAME_N_PARAM_FACES (f) | |
806 | && FRAME_PARAM_FACES (f) [facecode] != 0) | |
807 | merge_faces (FRAME_PARAM_FACES (f) [facecode], &face); | |
808 | } | |
809 | } | |
810 | else if (!NILP (prop)) | |
811 | { | |
812 | Lisp_Object oend; | |
813 | int oendpos; | |
814 | ||
815 | facecode = face_name_id_number (f, prop); | |
816 | if (facecode >= 0 && facecode < FRAME_N_PARAM_FACES (f) | |
817 | && FRAME_PARAM_FACES (f) [facecode] != 0) | |
818 | merge_faces (FRAME_PARAM_FACES (f)[facecode], &face); | |
819 | ||
820 | oend = OVERLAY_END (overlay_vec[i]); | |
821 | oendpos = OVERLAY_POSITION (oend); | |
822 | if (oendpos < endpos) | |
823 | endpos = oendpos; | |
824 | } | |
825 | } | |
826 | ||
827 | if (pos >= region_beg && pos < region_end) | |
828 | { | |
829 | if (region_end < endpos) | |
830 | endpos = region_end; | |
831 | if (region_face >= 0 && region_face < next_face_id) | |
832 | merge_faces (FRAME_PARAM_FACES (f)[region_face], &face); | |
833 | } | |
834 | ||
835 | *endptr = endpos; | |
836 | ||
837 | return intern_computed_face (f, &face); | |
838 | } | |
839 | \f | |
840 | /* Recompute the GC's for the default and modeline faces. | |
841 | We call this after changing frame parameters on which those GC's | |
842 | depend. */ | |
843 | ||
844 | void | |
845 | recompute_basic_faces (f) | |
846 | FRAME_PTR f; | |
847 | { | |
848 | /* If the frame's faces haven't been initialized yet, don't worry about | |
849 | this stuff. */ | |
850 | if (FRAME_N_PARAM_FACES (f) < 2) | |
851 | return; | |
852 | ||
853 | BLOCK_INPUT; | |
854 | ||
855 | compute_base_face (f, FRAME_DEFAULT_FACE (f)); | |
856 | compute_base_face (f, FRAME_MODE_LINE_FACE (f)); | |
857 | ||
858 | merge_faces (FRAME_DEFAULT_PARAM_FACE (f), FRAME_DEFAULT_FACE (f)); | |
859 | merge_faces (FRAME_MODE_LINE_PARAM_FACE (f), FRAME_MODE_LINE_FACE (f)); | |
860 | ||
861 | intern_face (f, FRAME_DEFAULT_FACE (f)); | |
862 | intern_face (f, FRAME_MODE_LINE_FACE (f)); | |
863 | ||
864 | UNBLOCK_INPUT; | |
865 | } | |
866 | ||
867 | ||
868 | \f | |
869 | /* Lisp interface. */ | |
870 | ||
871 | DEFUN ("frame-face-alist", Fframe_face_alist, Sframe_face_alist, 1, 1, 0, | |
872 | "") | |
873 | (frame) | |
874 | Lisp_Object frame; | |
875 | { | |
876 | CHECK_FRAME (frame, 0); | |
877 | return XFRAME (frame)->face_alist; | |
878 | } | |
879 | ||
880 | DEFUN ("set-frame-face-alist", Fset_frame_face_alist, Sset_frame_face_alist, | |
881 | 2, 2, 0, "") | |
882 | (frame, value) | |
883 | Lisp_Object frame, value; | |
884 | { | |
885 | CHECK_FRAME (frame, 0); | |
886 | XFRAME (frame)->face_alist = value; | |
887 | return value; | |
888 | } | |
889 | ||
890 | ||
891 | DEFUN ("make-face-internal", Fmake_face_internal, Smake_face_internal, 1, 1, 0, | |
892 | "Create face number FACE-ID on all frames.") | |
893 | (face_id) | |
894 | Lisp_Object face_id; | |
895 | { | |
896 | Lisp_Object rest, frame; | |
897 | int id = XINT (face_id); | |
898 | ||
899 | CHECK_NUMBER (face_id, 0); | |
900 | if (id < 0 || id >= next_face_id) | |
901 | error ("Face id out of range"); | |
902 | ||
903 | FOR_EACH_FRAME (rest, frame) | |
904 | { | |
fbd6baed | 905 | if (FRAME_W32_P (XFRAME (frame))) |
ee78dc32 GV |
906 | ensure_face_ready (XFRAME (frame), id); |
907 | } | |
908 | return Qnil; | |
909 | } | |
910 | ||
911 | ||
912 | DEFUN ("set-face-attribute-internal", Fset_face_attribute_internal, | |
913 | Sset_face_attribute_internal, 4, 4, 0, "") | |
914 | (face_id, attr_name, attr_value, frame) | |
915 | Lisp_Object face_id, attr_name, attr_value, frame; | |
916 | { | |
917 | struct face *face; | |
918 | struct frame *f; | |
919 | int magic_p; | |
920 | int id; | |
921 | int garbaged = 0; | |
922 | ||
923 | CHECK_FRAME (frame, 0); | |
924 | CHECK_NUMBER (face_id, 0); | |
925 | CHECK_SYMBOL (attr_name, 0); | |
926 | ||
927 | f = XFRAME (frame); | |
928 | id = XINT (face_id); | |
929 | if (id < 0 || id >= next_face_id) | |
930 | error ("Face id out of range"); | |
931 | ||
fbd6baed | 932 | if (! FRAME_W32_P (f)) |
ee78dc32 GV |
933 | return Qnil; |
934 | ||
935 | ensure_face_ready (f, id); | |
936 | face = FRAME_PARAM_FACES (f) [XFASTINT (face_id)]; | |
937 | ||
938 | if (EQ (attr_name, intern ("font"))) | |
939 | { | |
940 | XFontStruct *font = load_font (f, attr_value); | |
fbd6baed | 941 | if (face->font != f->output_data.w32->font) |
ee78dc32 GV |
942 | unload_font (f, face->font); |
943 | face->font = font; | |
944 | if (frame_update_line_height (f)) | |
945 | x_set_window_size (f, 0, f->width, f->height); | |
946 | /* Must clear cache, since it might contain the font | |
947 | we just got rid of. */ | |
948 | garbaged = 1; | |
949 | } | |
950 | else if (EQ (attr_name, intern ("foreground"))) | |
951 | { | |
952 | unsigned long new_color = load_color (f, attr_value); | |
953 | unload_color (f, face->foreground); | |
954 | face->foreground = new_color; | |
955 | garbaged = 1; | |
956 | } | |
957 | else if (EQ (attr_name, intern ("background"))) | |
958 | { | |
959 | unsigned long new_color = load_color (f, attr_value); | |
960 | unload_color (f, face->background); | |
961 | face->background = new_color; | |
962 | garbaged = 1; | |
963 | } | |
964 | else if (EQ (attr_name, intern ("background-pixmap"))) | |
965 | { | |
966 | unsigned int w, h; | |
967 | unsigned long new_pixmap = load_pixmap (f, attr_value, &w, &h); | |
968 | x_destroy_bitmap (f, face->stipple); | |
969 | face->stipple = (Pixmap) new_pixmap; | |
970 | face->pixmap_w = w; | |
971 | face->pixmap_h = h; | |
972 | garbaged = 1; | |
973 | } | |
974 | else if (EQ (attr_name, intern ("underline"))) | |
975 | { | |
976 | int new = !NILP (attr_value); | |
977 | face->underline = new; | |
978 | } | |
979 | else | |
980 | error ("unknown face attribute"); | |
981 | ||
982 | if (id == 0 || id == 1) | |
983 | recompute_basic_faces (f); | |
984 | ||
985 | /* We must redraw the frame whenever any face font or color changes, | |
986 | because it's possible that a merged (display) face | |
987 | contains the font or color we just replaced. | |
988 | And we must inhibit any Expose events until the redraw is done, | |
989 | since they would try to use the invalid display faces. */ | |
990 | if (garbaged) | |
991 | SET_FRAME_GARBAGED (f); | |
992 | ||
993 | return Qnil; | |
994 | } | |
995 | ||
996 | DEFUN ("internal-next-face-id", Finternal_next_face_id, Sinternal_next_face_id, | |
997 | 0, 0, 0, "") | |
998 | () | |
999 | { | |
1000 | return make_number (next_face_id++); | |
1001 | } | |
1002 | ||
1003 | /* Return the face id for name NAME on frame FRAME. | |
1004 | (It should be the same for all frames, | |
1005 | but it's as easy to use the "right" frame to look it up | |
1006 | as to use any other one.) */ | |
1007 | ||
1008 | int | |
1009 | face_name_id_number (f, name) | |
1010 | FRAME_PTR f; | |
1011 | Lisp_Object name; | |
1012 | { | |
1013 | Lisp_Object tem; | |
1014 | ||
1015 | tem = Fcdr (assq_no_quit (name, f->face_alist)); | |
1016 | if (NILP (tem)) | |
1017 | return 0; | |
1018 | CHECK_VECTOR (tem, 0); | |
1019 | tem = XVECTOR (tem)->contents[2]; | |
1020 | CHECK_NUMBER (tem, 0); | |
1021 | return XINT (tem); | |
1022 | } | |
1023 | \f | |
1024 | /* Emacs initialization. */ | |
1025 | ||
1026 | void | |
fbd6baed | 1027 | syms_of_w32faces () |
ee78dc32 GV |
1028 | { |
1029 | Qface = intern ("face"); | |
1030 | staticpro (&Qface); | |
1031 | Qmouse_face = intern ("mouse-face"); | |
1032 | staticpro (&Qmouse_face); | |
1033 | Qpixmap_spec_p = intern ("pixmap-spec-p"); | |
1034 | staticpro (&Qpixmap_spec_p); | |
1035 | ||
1036 | DEFVAR_INT ("region-face", ®ion_face, | |
1037 | "Face number to use to highlight the region\n\ | |
1038 | The region is highlighted with this face\n\ | |
1039 | when Transient Mark mode is enabled and the mark is active."); | |
1040 | ||
1041 | defsubr (&Spixmap_spec_p); | |
1042 | defsubr (&Sframe_face_alist); | |
1043 | defsubr (&Sset_frame_face_alist); | |
1044 | defsubr (&Smake_face_internal); | |
1045 | defsubr (&Sset_face_attribute_internal); | |
1046 | defsubr (&Sinternal_next_face_id); | |
1047 | } |