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e9e23e23 | 1 | /* "Face" primitives on the Microsoft W32 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 */ ); | |
8be05193 GV |
142 | static void merge_face_list ( /* FRAME_PTR, struct face *, Lisp_Object */ ); |
143 | ||
144 | extern Lisp_Object Qforeground_color, Qbackground_color; | |
ee78dc32 GV |
145 | \f |
146 | /* Allocating, copying, and comparing struct faces. */ | |
147 | ||
148 | /* Allocate a new face */ | |
149 | static struct face * | |
150 | allocate_face () | |
151 | { | |
152 | struct face *result = (struct face *) xmalloc (sizeof (struct face)); | |
153 | bzero (result, sizeof (struct face)); | |
154 | result->font = (XFontStruct *) FACE_DEFAULT; | |
155 | result->foreground = FACE_DEFAULT; | |
156 | result->background = FACE_DEFAULT; | |
157 | result->stipple = FACE_DEFAULT; | |
158 | return result; | |
159 | } | |
160 | ||
161 | /* Make a new face that's a copy of an existing one. */ | |
162 | static struct face * | |
163 | copy_face (face) | |
164 | struct face *face; | |
165 | { | |
166 | struct face *result = allocate_face (); | |
167 | ||
168 | result->font = face->font; | |
169 | result->foreground = face->foreground; | |
170 | result->background = face->background; | |
171 | result->stipple = face->stipple; | |
172 | result->underline = face->underline; | |
173 | result->pixmap_h = face->pixmap_h; | |
174 | result->pixmap_w = face->pixmap_w; | |
175 | ||
176 | return result; | |
177 | } | |
178 | ||
179 | static int | |
180 | face_eql (face1, face2) | |
181 | struct face *face1, *face2; | |
182 | { | |
183 | return ( face1->font == face2->font | |
184 | && face1->foreground == face2->foreground | |
185 | && face1->background == face2->background | |
186 | && face1->stipple == face2->stipple | |
187 | && face1->underline == face2->underline); | |
188 | } | |
189 | \f | |
190 | /* Managing graphics contexts of faces. */ | |
191 | ||
192 | /* Given a computed face, construct its graphics context if necessary. */ | |
193 | ||
194 | struct face * | |
195 | intern_face (f, face) | |
196 | struct frame *f; | |
197 | struct face *face; | |
198 | { | |
199 | face->gc = NULL; | |
200 | ||
201 | return face; | |
202 | } | |
203 | ||
204 | /* Clear out all graphics contexts for all computed faces | |
205 | except for the default and mode line faces. | |
206 | This should be done from time to time just to avoid | |
207 | keeping too many graphics contexts that are no longer needed. */ | |
208 | ||
209 | void | |
210 | clear_face_cache () | |
211 | { | |
212 | /* Nothing extra */ | |
213 | } | |
214 | \f | |
215 | /* Allocating, freeing, and duplicating fonts, colors, and pixmaps. | |
216 | ||
217 | These functions operate on param faces only. | |
218 | Computed faces get their fonts, colors and pixmaps | |
219 | by merging param faces. */ | |
220 | ||
221 | static XFontStruct * | |
222 | load_font (f, name) | |
223 | struct frame *f; | |
224 | Lisp_Object name; | |
225 | { | |
226 | XFontStruct *font; | |
227 | ||
228 | if (NILP (name)) | |
229 | return (XFontStruct *) FACE_DEFAULT; | |
230 | ||
231 | CHECK_STRING (name, 0); | |
232 | BLOCK_INPUT; | |
fbd6baed | 233 | font = w32_load_font (FRAME_W32_DISPLAY_INFO (f), (char *) XSTRING (name)->data); |
ee78dc32 GV |
234 | UNBLOCK_INPUT; |
235 | ||
236 | if (! font) | |
237 | Fsignal (Qerror, Fcons (build_string ("undefined font"), | |
238 | Fcons (name, Qnil))); | |
239 | return font; | |
240 | } | |
241 | ||
242 | static void | |
243 | unload_font (f, font) | |
244 | struct frame *f; | |
245 | XFontStruct *font; | |
246 | { | |
247 | if (!font || font == ((XFontStruct *) FACE_DEFAULT)) | |
248 | return; | |
249 | ||
250 | BLOCK_INPUT; | |
fbd6baed | 251 | w32_unload_font (FRAME_W32_DISPLAY_INFO (f), font); |
ee78dc32 GV |
252 | UNBLOCK_INPUT; |
253 | } | |
254 | ||
255 | static unsigned long | |
256 | load_color (f, name) | |
257 | struct frame *f; | |
258 | Lisp_Object name; | |
259 | { | |
260 | COLORREF color; | |
261 | int result; | |
262 | ||
263 | if (NILP (name)) | |
264 | return FACE_DEFAULT; | |
265 | ||
266 | CHECK_STRING (name, 0); | |
267 | /* if the colormap is full, defined_color will return a best match | |
268 | to the values in an an existing cell. */ | |
269 | result = defined_color(f, (char *) XSTRING (name)->data, &color, 1); | |
270 | if (! result) | |
271 | Fsignal (Qerror, Fcons (build_string ("undefined color"), | |
272 | Fcons (name, Qnil))); | |
273 | return (unsigned long) color; | |
274 | } | |
275 | ||
276 | static void | |
277 | unload_color (f, pixel) | |
278 | struct frame *f; | |
279 | unsigned long pixel; | |
280 | { | |
281 | } | |
282 | ||
283 | DEFUN ("pixmap-spec-p", Fpixmap_spec_p, Spixmap_spec_p, 1, 1, 0, | |
284 | "Return t if ARG is a valid pixmap specification.") | |
285 | (arg) | |
286 | Lisp_Object arg; | |
287 | { | |
288 | Lisp_Object height, width; | |
289 | ||
290 | return ((STRINGP (arg) | |
291 | || (CONSP (arg) | |
292 | && CONSP (XCONS (arg)->cdr) | |
293 | && CONSP (XCONS (XCONS (arg)->cdr)->cdr) | |
294 | && NILP (XCONS (XCONS (XCONS (arg)->cdr)->cdr)->cdr) | |
295 | && (width = XCONS (arg)->car, INTEGERP (width)) | |
296 | && (height = XCONS (XCONS (arg)->cdr)->car, INTEGERP (height)) | |
297 | && STRINGP (XCONS (XCONS (XCONS (arg)->cdr)->cdr)->car) | |
298 | && XINT (width) > 0 | |
299 | && XINT (height) > 0 | |
300 | /* The string must have enough bits for width * height. */ | |
301 | && ((XSTRING (XCONS (XCONS (XCONS (arg)->cdr)->cdr)->car)->size | |
302 | * (BITS_PER_INT / sizeof (int))) | |
303 | >= XFASTINT (width) * XFASTINT (height)))) | |
304 | ? Qt : Qnil); | |
305 | } | |
306 | ||
307 | /* Load a bitmap according to NAME (which is either a file name | |
308 | or a pixmap spec). Return the bitmap_id (see xfns.c) | |
309 | or get an error if NAME is invalid. | |
310 | ||
311 | Store the bitmap width in *W_PTR and height in *H_PTR. */ | |
312 | ||
313 | static long | |
314 | load_pixmap (f, name, w_ptr, h_ptr) | |
315 | FRAME_PTR f; | |
316 | Lisp_Object name; | |
317 | unsigned int *w_ptr, *h_ptr; | |
318 | { | |
319 | int bitmap_id; | |
320 | Lisp_Object tem; | |
321 | ||
322 | if (NILP (name)) | |
323 | return FACE_DEFAULT; | |
324 | ||
325 | tem = Fpixmap_spec_p (name); | |
326 | if (NILP (tem)) | |
327 | wrong_type_argument (Qpixmap_spec_p, name); | |
328 | ||
329 | BLOCK_INPUT; | |
330 | ||
331 | if (CONSP (name)) | |
332 | { | |
333 | /* Decode a bitmap spec into a bitmap. */ | |
334 | ||
335 | int h, w; | |
336 | Lisp_Object bits; | |
337 | ||
338 | w = XINT (Fcar (name)); | |
339 | h = XINT (Fcar (Fcdr (name))); | |
340 | bits = Fcar (Fcdr (Fcdr (name))); | |
341 | ||
342 | bitmap_id = x_create_bitmap_from_data (f, XSTRING (bits)->data, | |
343 | w, h); | |
344 | } | |
345 | else | |
346 | { | |
347 | /* It must be a string -- a file name. */ | |
348 | bitmap_id = x_create_bitmap_from_file (f, name); | |
349 | } | |
350 | UNBLOCK_INPUT; | |
351 | ||
352 | if (bitmap_id < 0) | |
353 | Fsignal (Qerror, Fcons (build_string ("invalid or undefined bitmap"), | |
354 | Fcons (name, Qnil))); | |
355 | ||
356 | *w_ptr = x_bitmap_width (f, bitmap_id); | |
357 | *h_ptr = x_bitmap_height (f, bitmap_id); | |
358 | ||
359 | return bitmap_id; | |
360 | } | |
361 | ||
362 | \f | |
363 | /* Managing parameter face arrays for frames. */ | |
364 | ||
365 | void | |
366 | init_frame_faces (f) | |
367 | FRAME_PTR f; | |
368 | { | |
369 | ensure_face_ready (f, 0); | |
370 | ensure_face_ready (f, 1); | |
371 | ||
372 | FRAME_N_COMPUTED_FACES (f) = 0; | |
373 | FRAME_SIZE_COMPUTED_FACES (f) = 0; | |
374 | ||
375 | new_computed_face (f, FRAME_PARAM_FACES (f)[0]); | |
376 | new_computed_face (f, FRAME_PARAM_FACES (f)[1]); | |
377 | recompute_basic_faces (f); | |
378 | ||
ee78dc32 GV |
379 | /* Find another frame. */ |
380 | { | |
381 | Lisp_Object tail, frame, result; | |
382 | ||
383 | result = Qnil; | |
384 | FOR_EACH_FRAME (tail, frame) | |
fbd6baed | 385 | if (FRAME_W32_P (XFRAME (frame)) |
ee78dc32 GV |
386 | && XFRAME (frame) != f) |
387 | { | |
388 | result = frame; | |
389 | break; | |
390 | } | |
391 | ||
392 | /* If we didn't find any X frames other than f, then we don't need | |
393 | any faces other than 0 and 1, so we're okay. Otherwise, make | |
394 | sure that all faces valid on the selected frame are also valid | |
395 | on this new frame. */ | |
396 | if (FRAMEP (result)) | |
397 | { | |
398 | int i; | |
399 | int n_faces = FRAME_N_PARAM_FACES (XFRAME (result)); | |
400 | struct face **faces = FRAME_PARAM_FACES (XFRAME (result)); | |
401 | ||
402 | for (i = 2; i < n_faces; i++) | |
403 | if (faces[i]) | |
404 | ensure_face_ready (f, i); | |
405 | } | |
406 | } | |
ee78dc32 GV |
407 | } |
408 | ||
409 | ||
410 | /* Called from Fdelete_frame. */ | |
411 | ||
412 | void | |
413 | free_frame_faces (f) | |
414 | struct frame *f; | |
415 | { | |
416 | int i; | |
417 | ||
418 | BLOCK_INPUT; | |
419 | ||
420 | for (i = 0; i < FRAME_N_PARAM_FACES (f); i++) | |
421 | { | |
422 | struct face *face = FRAME_PARAM_FACES (f) [i]; | |
423 | if (face) | |
424 | { | |
425 | unload_font (f, face->font); | |
426 | unload_color (f, face->foreground); | |
427 | unload_color (f, face->background); | |
428 | x_destroy_bitmap (f, face->stipple); | |
429 | xfree (face); | |
430 | } | |
431 | } | |
432 | xfree (FRAME_PARAM_FACES (f)); | |
433 | FRAME_PARAM_FACES (f) = 0; | |
434 | FRAME_N_PARAM_FACES (f) = 0; | |
435 | ||
436 | /* All faces in FRAME_COMPUTED_FACES use resources copied from | |
437 | FRAME_PARAM_FACES; we can free them without fuss. | |
438 | But we do free the GCs and the face objects themselves. */ | |
439 | for (i = 0; i < FRAME_N_COMPUTED_FACES (f); i++) | |
440 | { | |
441 | struct face *face = FRAME_COMPUTED_FACES (f) [i]; | |
442 | if (face) | |
443 | { | |
444 | xfree (face); | |
445 | } | |
446 | } | |
447 | xfree (FRAME_COMPUTED_FACES (f)); | |
448 | FRAME_COMPUTED_FACES (f) = 0; | |
449 | FRAME_N_COMPUTED_FACES (f) = 0; | |
450 | ||
451 | UNBLOCK_INPUT; | |
452 | } | |
453 | \f | |
454 | /* Interning faces in a frame's face array. */ | |
455 | ||
456 | static int | |
457 | new_computed_face (f, new_face) | |
458 | struct frame *f; | |
459 | struct face *new_face; | |
460 | { | |
461 | int i = FRAME_N_COMPUTED_FACES (f); | |
462 | ||
463 | if (i >= FRAME_SIZE_COMPUTED_FACES (f)) | |
464 | { | |
465 | int new_size = i + 32; | |
466 | ||
467 | FRAME_COMPUTED_FACES (f) | |
468 | = (struct face **) (FRAME_SIZE_COMPUTED_FACES (f) == 0 | |
469 | ? xmalloc (new_size * sizeof (struct face *)) | |
470 | : xrealloc (FRAME_COMPUTED_FACES (f), | |
471 | new_size * sizeof (struct face *))); | |
472 | FRAME_SIZE_COMPUTED_FACES (f) = new_size; | |
473 | } | |
474 | ||
475 | i = FRAME_N_COMPUTED_FACES (f)++; | |
476 | FRAME_COMPUTED_FACES (f)[i] = copy_face (new_face); | |
477 | return i; | |
478 | } | |
479 | ||
480 | ||
481 | /* Find a match for NEW_FACE in a FRAME's computed face array, and add | |
482 | it if we don't find one. */ | |
483 | static int | |
484 | intern_computed_face (f, new_face) | |
485 | struct frame *f; | |
486 | struct face *new_face; | |
487 | { | |
488 | int len = FRAME_N_COMPUTED_FACES (f); | |
489 | int i; | |
490 | ||
491 | /* Search for a computed face already on F equivalent to FACE. */ | |
492 | for (i = 0; i < len; i++) | |
493 | { | |
494 | if (! FRAME_COMPUTED_FACES (f)[i]) | |
495 | abort (); | |
496 | if (face_eql (new_face, FRAME_COMPUTED_FACES (f)[i])) | |
497 | return i; | |
498 | } | |
499 | ||
500 | /* We didn't find one; add a new one. */ | |
501 | return new_computed_face (f, new_face); | |
502 | } | |
503 | ||
504 | /* Make parameter face id ID valid on frame F. */ | |
505 | ||
506 | static void | |
507 | ensure_face_ready (f, id) | |
508 | struct frame *f; | |
509 | int id; | |
510 | { | |
511 | if (FRAME_N_PARAM_FACES (f) <= id) | |
512 | { | |
513 | int n = id + 10; | |
514 | int i; | |
515 | if (!FRAME_N_PARAM_FACES (f)) | |
516 | FRAME_PARAM_FACES (f) | |
517 | = (struct face **) xmalloc (sizeof (struct face *) * n); | |
518 | else | |
519 | FRAME_PARAM_FACES (f) | |
520 | = (struct face **) xrealloc (FRAME_PARAM_FACES (f), | |
521 | sizeof (struct face *) * n); | |
522 | ||
523 | bzero (FRAME_PARAM_FACES (f) + FRAME_N_PARAM_FACES (f), | |
524 | (n - FRAME_N_PARAM_FACES (f)) * sizeof (struct face *)); | |
525 | FRAME_N_PARAM_FACES (f) = n; | |
526 | } | |
527 | ||
528 | if (FRAME_PARAM_FACES (f) [id] == 0) | |
529 | FRAME_PARAM_FACES (f) [id] = allocate_face (); | |
530 | } | |
531 | \f | |
532 | /* Return non-zero if FONT1 and FONT2 have the same width. | |
533 | We do not check the height, because we can now deal with | |
534 | different heights. | |
535 | We assume that they're both character-cell fonts. */ | |
536 | ||
537 | int | |
538 | same_size_fonts (font1, font2) | |
539 | XFontStruct *font1, *font2; | |
540 | { | |
541 | return (FONT_WIDTH(font1) == FONT_WIDTH(font2)); | |
542 | } | |
543 | ||
544 | /* Update the line_height of frame F according to the biggest font in | |
545 | any face. Return nonzero if if line_height changes. */ | |
546 | ||
547 | int | |
548 | frame_update_line_height (f) | |
549 | FRAME_PTR f; | |
550 | { | |
551 | int i; | |
fbd6baed | 552 | int biggest = FONT_HEIGHT (f->output_data.w32->font); |
ee78dc32 | 553 | |
fbd6baed GV |
554 | for (i = 0; i < f->output_data.w32->n_param_faces; i++) |
555 | if (f->output_data.w32->param_faces[i] != 0 | |
556 | && f->output_data.w32->param_faces[i]->font != (XFontStruct *) FACE_DEFAULT) | |
ee78dc32 | 557 | { |
fbd6baed | 558 | int height = FONT_HEIGHT (f->output_data.w32->param_faces[i]->font); |
ee78dc32 GV |
559 | if (height > biggest) |
560 | biggest = height; | |
561 | } | |
562 | ||
fbd6baed | 563 | if (biggest == f->output_data.w32->line_height) |
ee78dc32 GV |
564 | return 0; |
565 | ||
fbd6baed | 566 | f->output_data.w32->line_height = biggest; |
ee78dc32 GV |
567 | return 1; |
568 | } | |
569 | \f | |
570 | /* Modify face TO by copying from FROM all properties which have | |
571 | nondefault settings. */ | |
572 | ||
573 | static void | |
574 | merge_faces (from, to) | |
575 | struct face *from, *to; | |
576 | { | |
577 | /* Only merge the font if it's the same width as the base font. | |
578 | Otherwise ignore it, since we can't handle it properly. */ | |
579 | if (from->font != (XFontStruct *) FACE_DEFAULT | |
580 | && same_size_fonts (from->font, to->font)) | |
581 | to->font = from->font; | |
582 | if (from->foreground != FACE_DEFAULT) | |
583 | to->foreground = from->foreground; | |
584 | if (from->background != FACE_DEFAULT) | |
585 | to->background = from->background; | |
586 | if (from->stipple != FACE_DEFAULT) | |
587 | { | |
588 | to->stipple = from->stipple; | |
589 | to->pixmap_h = from->pixmap_h; | |
590 | to->pixmap_w = from->pixmap_w; | |
591 | } | |
592 | if (from->underline) | |
593 | to->underline = from->underline; | |
594 | } | |
595 | ||
596 | /* Set up the basic set of facial parameters, based on the frame's | |
597 | data; all faces are deltas applied to this. */ | |
598 | ||
599 | static void | |
600 | compute_base_face (f, face) | |
601 | FRAME_PTR f; | |
602 | struct face *face; | |
603 | { | |
604 | face->gc = 0; | |
605 | face->foreground = FRAME_FOREGROUND_PIXEL (f); | |
606 | face->background = FRAME_BACKGROUND_PIXEL (f); | |
607 | face->font = FRAME_FONT (f); | |
608 | face->stipple = 0; | |
609 | face->underline = 0; | |
610 | } | |
611 | ||
612 | /* Return the face ID to use to display a special glyph which selects | |
613 | FACE_CODE as the face ID, assuming that ordinarily the face would | |
614 | be CURRENT_FACE. F is the frame. */ | |
615 | ||
616 | int | |
617 | compute_glyph_face (f, face_code, current_face) | |
618 | struct frame *f; | |
619 | int face_code, current_face; | |
620 | { | |
621 | struct face face; | |
622 | ||
623 | face = *FRAME_COMPUTED_FACES (f)[current_face]; | |
624 | ||
625 | if (face_code >= 0 && face_code < FRAME_N_PARAM_FACES (f) | |
626 | && FRAME_PARAM_FACES (f) [face_code] != 0) | |
627 | merge_faces (FRAME_PARAM_FACES (f) [face_code], &face); | |
628 | ||
629 | return intern_computed_face (f, &face); | |
630 | } | |
631 | ||
632 | /* Return the face ID to use to display a special glyph which selects | |
633 | FACE_CODE as the face ID, assuming that ordinarily the face would | |
634 | be CURRENT_FACE. F is the frame. */ | |
635 | ||
636 | int | |
637 | compute_glyph_face_1 (f, face_name, current_face) | |
638 | struct frame *f; | |
639 | Lisp_Object face_name; | |
640 | int current_face; | |
641 | { | |
642 | struct face face; | |
643 | ||
644 | face = *FRAME_COMPUTED_FACES (f)[current_face]; | |
645 | ||
646 | if (!NILP (face_name)) | |
647 | { | |
648 | int facecode = face_name_id_number (f, face_name); | |
649 | if (facecode >= 0 && facecode < FRAME_N_PARAM_FACES (f) | |
650 | && FRAME_PARAM_FACES (f) [facecode] != 0) | |
651 | merge_faces (FRAME_PARAM_FACES (f) [facecode], &face); | |
652 | } | |
653 | ||
654 | return intern_computed_face (f, &face); | |
655 | } | |
656 | \f | |
657 | /* Return the face ID associated with a buffer position POS. | |
658 | Store into *ENDPTR the position at which a different face is needed. | |
659 | This does not take account of glyphs that specify their own face codes. | |
660 | F is the frame in use for display, and W is a window displaying | |
661 | the current buffer. | |
662 | ||
663 | REGION_BEG, REGION_END delimit the region, so it can be highlighted. | |
664 | ||
665 | LIMIT is a position not to scan beyond. That is to limit | |
666 | the time this function can take. | |
667 | ||
668 | If MOUSE is nonzero, use the character's mouse-face, not its face. */ | |
ee78dc32 GV |
669 | int |
670 | compute_char_face (f, w, pos, region_beg, region_end, endptr, limit, mouse) | |
671 | struct frame *f; | |
672 | struct window *w; | |
673 | int pos; | |
674 | int region_beg, region_end; | |
675 | int *endptr; | |
676 | int limit; | |
677 | int mouse; | |
678 | { | |
679 | struct face face; | |
680 | Lisp_Object prop, position; | |
681 | int i, j, noverlays; | |
682 | int facecode; | |
683 | Lisp_Object *overlay_vec; | |
684 | Lisp_Object frame; | |
685 | int endpos; | |
686 | Lisp_Object propname; | |
687 | ||
688 | /* W must display the current buffer. We could write this function | |
689 | to use the frame and buffer of W, but right now it doesn't. */ | |
690 | if (XBUFFER (w->buffer) != current_buffer) | |
691 | abort (); | |
692 | ||
693 | XSETFRAME (frame, f); | |
694 | ||
695 | endpos = ZV; | |
696 | if (pos < region_beg && region_beg < endpos) | |
697 | endpos = region_beg; | |
698 | ||
699 | XSETFASTINT (position, pos); | |
700 | ||
701 | if (mouse) | |
702 | propname = Qmouse_face; | |
703 | else | |
704 | propname = Qface; | |
705 | ||
706 | prop = Fget_text_property (position, propname, w->buffer); | |
707 | ||
708 | { | |
709 | Lisp_Object limit1, end; | |
710 | ||
711 | XSETFASTINT (limit1, (limit < endpos ? limit : endpos)); | |
712 | end = Fnext_single_property_change (position, propname, w->buffer, limit1); | |
713 | if (INTEGERP (end)) | |
714 | endpos = XINT (end); | |
715 | } | |
716 | ||
717 | { | |
718 | int next_overlay; | |
719 | int len; | |
720 | ||
721 | /* First try with room for 40 overlays. */ | |
722 | len = 40; | |
723 | overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); | |
724 | ||
725 | noverlays = overlays_at (pos, 0, &overlay_vec, &len, | |
726 | &next_overlay, (int *) 0); | |
727 | ||
728 | /* If there are more than 40, | |
729 | make enough space for all, and try again. */ | |
730 | if (noverlays > len) | |
731 | { | |
732 | len = noverlays; | |
733 | overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); | |
734 | noverlays = overlays_at (pos, 0, &overlay_vec, &len, | |
735 | &next_overlay, (int *) 0); | |
736 | } | |
737 | ||
738 | if (next_overlay < endpos) | |
739 | endpos = next_overlay; | |
740 | } | |
741 | ||
742 | *endptr = endpos; | |
743 | ||
744 | /* Optimize the default case. */ | |
745 | if (noverlays == 0 && NILP (prop) | |
746 | && !(pos >= region_beg && pos < region_end)) | |
747 | return 0; | |
748 | ||
749 | compute_base_face (f, &face); | |
750 | ||
8be05193 | 751 | merge_face_list (f, &face, prop); |
ee78dc32 GV |
752 | |
753 | noverlays = sort_overlays (overlay_vec, noverlays, w); | |
754 | ||
755 | /* Now merge the overlay data in that order. */ | |
756 | for (i = 0; i < noverlays; i++) | |
757 | { | |
8be05193 GV |
758 | Lisp_Object oend; |
759 | int oendpos; | |
ee78dc32 | 760 | |
8be05193 GV |
761 | prop = Foverlay_get (overlay_vec[i], propname); |
762 | merge_face_list (f, &face, prop); | |
ee78dc32 | 763 | |
8be05193 GV |
764 | oend = OVERLAY_END (overlay_vec[i]); |
765 | oendpos = OVERLAY_POSITION (oend); | |
766 | if (oendpos < endpos) | |
767 | endpos = oendpos; | |
ee78dc32 GV |
768 | } |
769 | ||
770 | if (pos >= region_beg && pos < region_end) | |
771 | { | |
772 | if (region_end < endpos) | |
773 | endpos = region_end; | |
774 | if (region_face >= 0 && region_face < next_face_id) | |
775 | merge_faces (FRAME_PARAM_FACES (f)[region_face], &face); | |
776 | } | |
777 | ||
778 | *endptr = endpos; | |
779 | ||
780 | return intern_computed_face (f, &face); | |
781 | } | |
8be05193 GV |
782 | |
783 | static void | |
784 | merge_face_list (f, face, prop) | |
785 | FRAME_PTR f; | |
786 | struct face *face; | |
787 | Lisp_Object prop; | |
788 | { | |
789 | Lisp_Object length; | |
790 | int len; | |
791 | Lisp_Object *faces; | |
792 | int j; | |
793 | ||
794 | if (CONSP (prop) | |
795 | && ! STRINGP (XCONS (prop)->cdr)) | |
796 | { | |
797 | /* We have a list of faces, merge them in reverse order. */ | |
798 | ||
799 | length = Fsafe_length (prop); | |
800 | len = XFASTINT (length); | |
801 | ||
802 | /* Put them into an array. */ | |
803 | faces = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); | |
804 | for (j = 0; j < len; j++) | |
805 | { | |
806 | faces[j] = Fcar (prop); | |
807 | prop = Fcdr (prop); | |
808 | } | |
809 | /* So that we can merge them in the reverse order. */ | |
810 | } | |
811 | else | |
812 | { | |
813 | faces = (Lisp_Object *) alloca (sizeof (Lisp_Object)); | |
814 | faces[0] = prop; | |
815 | len = 1; | |
816 | } | |
817 | ||
818 | for (j = len - 1; j >= 0; j--) | |
819 | { | |
820 | if (CONSP (faces[j])) | |
821 | { | |
822 | if (EQ (XCONS (faces[j])->car, Qbackground_color)) | |
823 | face->background = load_color (f, XCONS (faces[j])->cdr); | |
824 | if (EQ (XCONS (faces[j])->car, Qforeground_color)) | |
825 | face->foreground = load_color (f, XCONS (faces[j])->cdr); | |
826 | } | |
827 | else | |
828 | { | |
829 | int facecode = face_name_id_number (f, faces[j]); | |
830 | if (facecode >= 0 && facecode < FRAME_N_PARAM_FACES (f) | |
831 | && FRAME_PARAM_FACES (f) [facecode] != 0) | |
832 | merge_faces (FRAME_PARAM_FACES (f) [facecode], face); | |
833 | } | |
834 | } | |
835 | } | |
836 | ||
ee78dc32 GV |
837 | \f |
838 | /* Recompute the GC's for the default and modeline faces. | |
839 | We call this after changing frame parameters on which those GC's | |
840 | depend. */ | |
841 | ||
842 | void | |
843 | recompute_basic_faces (f) | |
844 | FRAME_PTR f; | |
845 | { | |
846 | /* If the frame's faces haven't been initialized yet, don't worry about | |
847 | this stuff. */ | |
848 | if (FRAME_N_PARAM_FACES (f) < 2) | |
849 | return; | |
850 | ||
851 | BLOCK_INPUT; | |
852 | ||
853 | compute_base_face (f, FRAME_DEFAULT_FACE (f)); | |
854 | compute_base_face (f, FRAME_MODE_LINE_FACE (f)); | |
855 | ||
856 | merge_faces (FRAME_DEFAULT_PARAM_FACE (f), FRAME_DEFAULT_FACE (f)); | |
857 | merge_faces (FRAME_MODE_LINE_PARAM_FACE (f), FRAME_MODE_LINE_FACE (f)); | |
858 | ||
859 | intern_face (f, FRAME_DEFAULT_FACE (f)); | |
860 | intern_face (f, FRAME_MODE_LINE_FACE (f)); | |
861 | ||
862 | UNBLOCK_INPUT; | |
863 | } | |
864 | ||
865 | ||
866 | \f | |
867 | /* Lisp interface. */ | |
868 | ||
869 | DEFUN ("frame-face-alist", Fframe_face_alist, Sframe_face_alist, 1, 1, 0, | |
870 | "") | |
871 | (frame) | |
872 | Lisp_Object frame; | |
873 | { | |
874 | CHECK_FRAME (frame, 0); | |
875 | return XFRAME (frame)->face_alist; | |
876 | } | |
877 | ||
878 | DEFUN ("set-frame-face-alist", Fset_frame_face_alist, Sset_frame_face_alist, | |
879 | 2, 2, 0, "") | |
880 | (frame, value) | |
881 | Lisp_Object frame, value; | |
882 | { | |
883 | CHECK_FRAME (frame, 0); | |
884 | XFRAME (frame)->face_alist = value; | |
885 | return value; | |
886 | } | |
887 | ||
888 | ||
889 | DEFUN ("make-face-internal", Fmake_face_internal, Smake_face_internal, 1, 1, 0, | |
890 | "Create face number FACE-ID on all frames.") | |
891 | (face_id) | |
892 | Lisp_Object face_id; | |
893 | { | |
894 | Lisp_Object rest, frame; | |
895 | int id = XINT (face_id); | |
896 | ||
897 | CHECK_NUMBER (face_id, 0); | |
898 | if (id < 0 || id >= next_face_id) | |
899 | error ("Face id out of range"); | |
900 | ||
901 | FOR_EACH_FRAME (rest, frame) | |
902 | { | |
fbd6baed | 903 | if (FRAME_W32_P (XFRAME (frame))) |
ee78dc32 GV |
904 | ensure_face_ready (XFRAME (frame), id); |
905 | } | |
906 | return Qnil; | |
907 | } | |
908 | ||
909 | ||
910 | DEFUN ("set-face-attribute-internal", Fset_face_attribute_internal, | |
911 | Sset_face_attribute_internal, 4, 4, 0, "") | |
912 | (face_id, attr_name, attr_value, frame) | |
913 | Lisp_Object face_id, attr_name, attr_value, frame; | |
914 | { | |
915 | struct face *face; | |
916 | struct frame *f; | |
917 | int magic_p; | |
918 | int id; | |
919 | int garbaged = 0; | |
920 | ||
921 | CHECK_FRAME (frame, 0); | |
922 | CHECK_NUMBER (face_id, 0); | |
923 | CHECK_SYMBOL (attr_name, 0); | |
924 | ||
925 | f = XFRAME (frame); | |
926 | id = XINT (face_id); | |
927 | if (id < 0 || id >= next_face_id) | |
928 | error ("Face id out of range"); | |
929 | ||
fbd6baed | 930 | if (! FRAME_W32_P (f)) |
ee78dc32 GV |
931 | return Qnil; |
932 | ||
933 | ensure_face_ready (f, id); | |
934 | face = FRAME_PARAM_FACES (f) [XFASTINT (face_id)]; | |
935 | ||
936 | if (EQ (attr_name, intern ("font"))) | |
937 | { | |
938 | XFontStruct *font = load_font (f, attr_value); | |
fbd6baed | 939 | if (face->font != f->output_data.w32->font) |
ee78dc32 GV |
940 | unload_font (f, face->font); |
941 | face->font = font; | |
942 | if (frame_update_line_height (f)) | |
943 | x_set_window_size (f, 0, f->width, f->height); | |
944 | /* Must clear cache, since it might contain the font | |
945 | we just got rid of. */ | |
946 | garbaged = 1; | |
947 | } | |
948 | else if (EQ (attr_name, intern ("foreground"))) | |
949 | { | |
950 | unsigned long new_color = load_color (f, attr_value); | |
951 | unload_color (f, face->foreground); | |
952 | face->foreground = new_color; | |
953 | garbaged = 1; | |
954 | } | |
955 | else if (EQ (attr_name, intern ("background"))) | |
956 | { | |
957 | unsigned long new_color = load_color (f, attr_value); | |
958 | unload_color (f, face->background); | |
959 | face->background = new_color; | |
960 | garbaged = 1; | |
961 | } | |
962 | else if (EQ (attr_name, intern ("background-pixmap"))) | |
963 | { | |
964 | unsigned int w, h; | |
965 | unsigned long new_pixmap = load_pixmap (f, attr_value, &w, &h); | |
966 | x_destroy_bitmap (f, face->stipple); | |
967 | face->stipple = (Pixmap) new_pixmap; | |
968 | face->pixmap_w = w; | |
969 | face->pixmap_h = h; | |
970 | garbaged = 1; | |
971 | } | |
972 | else if (EQ (attr_name, intern ("underline"))) | |
973 | { | |
974 | int new = !NILP (attr_value); | |
975 | face->underline = new; | |
976 | } | |
977 | else | |
978 | error ("unknown face attribute"); | |
979 | ||
980 | if (id == 0 || id == 1) | |
981 | recompute_basic_faces (f); | |
982 | ||
983 | /* We must redraw the frame whenever any face font or color changes, | |
984 | because it's possible that a merged (display) face | |
985 | contains the font or color we just replaced. | |
986 | And we must inhibit any Expose events until the redraw is done, | |
987 | since they would try to use the invalid display faces. */ | |
988 | if (garbaged) | |
989 | SET_FRAME_GARBAGED (f); | |
990 | ||
991 | return Qnil; | |
992 | } | |
993 | ||
994 | DEFUN ("internal-next-face-id", Finternal_next_face_id, Sinternal_next_face_id, | |
995 | 0, 0, 0, "") | |
996 | () | |
997 | { | |
998 | return make_number (next_face_id++); | |
999 | } | |
1000 | ||
1001 | /* Return the face id for name NAME on frame FRAME. | |
1002 | (It should be the same for all frames, | |
1003 | but it's as easy to use the "right" frame to look it up | |
1004 | as to use any other one.) */ | |
1005 | ||
1006 | int | |
1007 | face_name_id_number (f, name) | |
1008 | FRAME_PTR f; | |
1009 | Lisp_Object name; | |
1010 | { | |
1011 | Lisp_Object tem; | |
1012 | ||
1013 | tem = Fcdr (assq_no_quit (name, f->face_alist)); | |
1014 | if (NILP (tem)) | |
1015 | return 0; | |
1016 | CHECK_VECTOR (tem, 0); | |
1017 | tem = XVECTOR (tem)->contents[2]; | |
1018 | CHECK_NUMBER (tem, 0); | |
1019 | return XINT (tem); | |
1020 | } | |
1021 | \f | |
1022 | /* Emacs initialization. */ | |
1023 | ||
1024 | void | |
fbd6baed | 1025 | syms_of_w32faces () |
ee78dc32 GV |
1026 | { |
1027 | Qface = intern ("face"); | |
1028 | staticpro (&Qface); | |
1029 | Qmouse_face = intern ("mouse-face"); | |
1030 | staticpro (&Qmouse_face); | |
1031 | Qpixmap_spec_p = intern ("pixmap-spec-p"); | |
1032 | staticpro (&Qpixmap_spec_p); | |
1033 | ||
1034 | DEFVAR_INT ("region-face", ®ion_face, | |
1035 | "Face number to use to highlight the region\n\ | |
1036 | The region is highlighted with this face\n\ | |
1037 | when Transient Mark mode is enabled and the mark is active."); | |
1038 | ||
1039 | defsubr (&Spixmap_spec_p); | |
1040 | defsubr (&Sframe_face_alist); | |
1041 | defsubr (&Sset_frame_face_alist); | |
1042 | defsubr (&Smake_face_internal); | |
1043 | defsubr (&Sset_face_attribute_internal); | |
1044 | defsubr (&Sinternal_next_face_id); | |
1045 | } |