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1 /* Generic Objects and Functions.
2 Copyright (C) 1995 Free Software Foundation, Inc.
3 Copyright (C) 1995 Board of Trustees, University of Illinois.
4 Copyright (C) 1995, 1996 Ben Wing.
5
6 This file is part of XEmacs.
7
8 XEmacs is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by the
10 Free Software Foundation; either version 2, or (at your option) any
11 later version.
12
13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with XEmacs; see the file COPYING. If not, write to
20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
22
23 /* Synched up with: Not in FSF. */
24
25 #include <config.h>
26 #include "lisp.h"
27
28 #include "device.h"
29 #include "elhash.h"
30 #include "faces.h"
31 #include "frame.h"
32 #include "objects.h"
33 #include "specifier.h"
34 #include "window.h"
35
36 /* Objects that are substituted when an instantiation fails.
37 If we leave in the Qunbound value, we will probably get crashes. */
38 Lisp_Object Vthe_null_color_instance, Vthe_null_font_instance;
39
40 /* Authors: Ben Wing, Chuck Thompson */
41
42 void
43 finalose (void *ptr)
44 {
45 Lisp_Object obj;
46 XSETOBJ (obj, Lisp_Type_Record, ptr);
47
48 signal_simple_error
49 ("Can't dump an emacs containing window system objects", obj);
50 }
51
52
53 /****************************************************************************
54 * Color-Instance Object *
55 ****************************************************************************/
56
57 Lisp_Object Qcolor_instancep;
58
59 static Lisp_Object
60 mark_color_instance (Lisp_Object obj)
61 {
62 struct Lisp_Color_Instance *c = XCOLOR_INSTANCE (obj);
63 mark_object (c->name);
64 if (!NILP (c->device)) /* Vthe_null_color_instance */
65 MAYBE_DEVMETH (XDEVICE (c->device), mark_color_instance, (c));
66
67 return c->device;
68 }
69
70 static void
71 print_color_instance (Lisp_Object obj, Lisp_Object printcharfun,
72 int escapeflag)
73 {
74 char buf[100];
75 struct Lisp_Color_Instance *c = XCOLOR_INSTANCE (obj);
76 if (print_readably)
77 error ("printing unreadable object #<color-instance 0x%x>",
78 c->header.uid);
79 write_c_string ("#<color-instance ", printcharfun);
80 print_internal (c->name, printcharfun, 0);
81 write_c_string (" on ", printcharfun);
82 print_internal (c->device, printcharfun, 0);
83 if (!NILP (c->device)) /* Vthe_null_color_instance */
84 MAYBE_DEVMETH (XDEVICE (c->device), print_color_instance,
85 (c, printcharfun, escapeflag));
86 sprintf (buf, " 0x%x>", c->header.uid);
87 write_c_string (buf, printcharfun);
88 }
89
90 static void
91 finalize_color_instance (void *header, int for_disksave)
92 {
93 struct Lisp_Color_Instance *c = (struct Lisp_Color_Instance *) header;
94
95 if (!NILP (c->device))
96 {
97 if (for_disksave) finalose (c);
98 MAYBE_DEVMETH (XDEVICE (c->device), finalize_color_instance, (c));
99 }
100 }
101
102 static int
103 color_instance_equal (Lisp_Object obj1, Lisp_Object obj2, int depth)
104 {
105 struct Lisp_Color_Instance *c1 = XCOLOR_INSTANCE (obj1);
106 struct Lisp_Color_Instance *c2 = XCOLOR_INSTANCE (obj2);
107
108 return (c1 == c2) ||
109 (EQ (c1->device, c2->device) &&
110 DEVICEP (c1->device) &&
111 HAS_DEVMETH_P (XDEVICE (c1->device), color_instance_equal) &&
112 DEVMETH (XDEVICE (c1->device), color_instance_equal, (c1, c2, depth)));
113 }
114
115 static unsigned long
116 color_instance_hash (Lisp_Object obj, int depth)
117 {
118 struct Lisp_Color_Instance *c = XCOLOR_INSTANCE (obj);
119 struct device *d = DEVICEP (c->device) ? XDEVICE (c->device) : 0;
120
121 return HASH2 ((unsigned long) d,
122 !d ? LISP_HASH (obj)
123 : DEVMETH_OR_GIVEN (d, color_instance_hash, (c, depth),
124 LISP_HASH (obj)));
125 }
126
127 DEFINE_LRECORD_IMPLEMENTATION ("color-instance", color_instance,
128 mark_color_instance, print_color_instance,
129 finalize_color_instance, color_instance_equal,
130 color_instance_hash, 0,
131 struct Lisp_Color_Instance);
132
133 DEFUN ("make-color-instance", Fmake_color_instance, 1, 3, 0, /*
134 Return a new `color-instance' object named NAME (a string).
135
136 Optional argument DEVICE specifies the device this object applies to
137 and defaults to the selected device.
138
139 An error is signaled if the color is unknown or cannot be allocated;
140 however, if optional argument NO-ERROR is non-nil, nil is simply
141 returned in this case. (And if NO-ERROR is other than t, a warning may
142 be issued.)
143
144 The returned object is a normal, first-class lisp object. The way you
145 `deallocate' the color is the way you deallocate any other lisp object:
146 you drop all pointers to it and allow it to be garbage collected. When
147 these objects are GCed, the underlying window-system data (e.g. X object)
148 is deallocated as well.
149 */
150 (name, device, no_error))
151 {
152 struct Lisp_Color_Instance *c;
153 Lisp_Object val;
154 int retval;
155
156 CHECK_STRING (name);
157 XSETDEVICE (device, decode_device (device));
158
159 c = alloc_lcrecord_type (struct Lisp_Color_Instance, &lrecord_color_instance);
160 c->name = name;
161 c->device = device;
162 c->data = 0;
163
164 retval = MAYBE_INT_DEVMETH (XDEVICE (device), initialize_color_instance,
165 (c, name, device,
166 decode_error_behavior_flag (no_error)));
167 if (!retval)
168 return Qnil;
169
170 XSETCOLOR_INSTANCE (val, c);
171 return val;
172 }
173
174 DEFUN ("color-instance-p", Fcolor_instance_p, 1, 1, 0, /*
175 Return non-nil if OBJECT is a color instance.
176 */
177 (object))
178 {
179 return COLOR_INSTANCEP (object) ? Qt : Qnil;
180 }
181
182 DEFUN ("color-instance-name", Fcolor_instance_name, 1, 1, 0, /*
183 Return the name used to allocate COLOR-INSTANCE.
184 */
185 (color_instance))
186 {
187 CHECK_COLOR_INSTANCE (color_instance);
188 return XCOLOR_INSTANCE (color_instance)->name;
189 }
190
191 DEFUN ("color-instance-rgb-components", Fcolor_instance_rgb_components, 1, 1, 0, /*
192 Return a three element list containing the red, green, and blue
193 color components of COLOR-INSTANCE, or nil if unknown.
194 Component values range from 0 to 65535.
195 */
196 (color_instance))
197 {
198 struct Lisp_Color_Instance *c;
199
200 CHECK_COLOR_INSTANCE (color_instance);
201 c = XCOLOR_INSTANCE (color_instance);
202
203 if (NILP (c->device))
204 return Qnil;
205
206 return MAYBE_LISP_DEVMETH (XDEVICE (c->device),
207 color_instance_rgb_components,
208 (c));
209 }
210
211 DEFUN ("valid-color-name-p", Fvalid_color_name_p, 1, 2, 0, /*
212 Return true if COLOR names a valid color for the current device.
213
214 Valid color names for X are listed in the file /usr/lib/X11/rgb.txt, or
215 whatever the equivalent is on your system.
216
217 Valid color names for TTY are those which have an ISO 6429 (ANSI) sequence.
218 In addition to being a color this may be one of a number of attributes
219 such as `blink'.
220 */
221 (color, device))
222 {
223 struct device *d = decode_device (device);
224
225 CHECK_STRING (color);
226 return MAYBE_INT_DEVMETH (d, valid_color_name_p, (d, color)) ? Qt : Qnil;
227 }
228
229
230 /***************************************************************************
231 * Font-Instance Object *
232 ***************************************************************************/
233
234 Lisp_Object Qfont_instancep;
235
236 static Lisp_Object font_instance_truename_internal (Lisp_Object xfont,
237 Error_behavior errb);
238
239 static Lisp_Object
240 mark_font_instance (Lisp_Object obj)
241 {
242 struct Lisp_Font_Instance *f = XFONT_INSTANCE (obj);
243
244 mark_object (f->name);
245 if (!NILP (f->device)) /* Vthe_null_font_instance */
246 MAYBE_DEVMETH (XDEVICE (f->device), mark_font_instance, (f));
247
248 return f->device;
249 }
250
251 static void
252 print_font_instance (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
253 {
254 char buf[200];
255 struct Lisp_Font_Instance *f = XFONT_INSTANCE (obj);
256 if (print_readably)
257 error ("printing unreadable object #<font-instance 0x%x>", f->header.uid);
258 write_c_string ("#<font-instance ", printcharfun);
259 print_internal (f->name, printcharfun, 1);
260 write_c_string (" on ", printcharfun);
261 print_internal (f->device, printcharfun, 0);
262 if (!NILP (f->device))
263 MAYBE_DEVMETH (XDEVICE (f->device), print_font_instance,
264 (f, printcharfun, escapeflag));
265 sprintf (buf, " 0x%x>", f->header.uid);
266 write_c_string (buf, printcharfun);
267 }
268
269 static void
270 finalize_font_instance (void *header, int for_disksave)
271 {
272 struct Lisp_Font_Instance *f = (struct Lisp_Font_Instance *) header;
273
274 if (!NILP (f->device))
275 {
276 if (for_disksave) finalose (f);
277 MAYBE_DEVMETH (XDEVICE (f->device), finalize_font_instance, (f));
278 }
279 }
280
281 /* Fonts are equal if they resolve to the same name.
282 Since we call `font-truename' to do this, and since font-truename is lazy,
283 this means the `equal' could cause XListFonts to be run the first time.
284 */
285 static int
286 font_instance_equal (Lisp_Object obj1, Lisp_Object obj2, int depth)
287 {
288 /* #### should this be moved into a device method? */
289 return internal_equal (font_instance_truename_internal (obj1, ERROR_ME_NOT),
290 font_instance_truename_internal (obj2, ERROR_ME_NOT),
291 depth + 1);
292 }
293
294 static unsigned long
295 font_instance_hash (Lisp_Object obj, int depth)
296 {
297 return internal_hash (font_instance_truename_internal (obj, ERROR_ME_NOT),
298 depth + 1);
299 }
300
301 DEFINE_LRECORD_IMPLEMENTATION ("font-instance", font_instance,
302 mark_font_instance, print_font_instance,
303 finalize_font_instance, font_instance_equal,
304 font_instance_hash, 0, struct Lisp_Font_Instance);
305
306 DEFUN ("make-font-instance", Fmake_font_instance, 1, 3, 0, /*
307 Return a new `font-instance' object named NAME.
308 DEVICE specifies the device this object applies to and defaults to the
309 selected device. An error is signalled if the font is unknown or cannot
310 be allocated; however, if NOERROR is non-nil, nil is simply returned in
311 this case.
312
313 The returned object is a normal, first-class lisp object. The way you
314 `deallocate' the font is the way you deallocate any other lisp object:
315 you drop all pointers to it and allow it to be garbage collected. When
316 these objects are GCed, the underlying X data is deallocated as well.
317 */
318 (name, device, no_error))
319 {
320 struct Lisp_Font_Instance *f;
321 Lisp_Object val;
322 int retval = 0;
323 Error_behavior errb = decode_error_behavior_flag (no_error);
324
325 if (ERRB_EQ (errb, ERROR_ME))
326 CHECK_STRING (name);
327 else if (!STRINGP (name))
328 return Qnil;
329
330 XSETDEVICE (device, decode_device (device));
331
332 f = alloc_lcrecord_type (struct Lisp_Font_Instance, &lrecord_font_instance);
333 f->name = name;
334 f->device = device;
335
336 f->data = 0;
337
338 /* Stick some default values here ... */
339 f->ascent = f->height = 1;
340 f->descent = 0;
341 f->width = 1;
342 f->proportional_p = 0;
343
344 retval = MAYBE_INT_DEVMETH (XDEVICE (device), initialize_font_instance,
345 (f, name, device, errb));
346
347 if (!retval)
348 return Qnil;
349
350 XSETFONT_INSTANCE (val, f);
351 return val;
352 }
353
354 DEFUN ("font-instance-p", Ffont_instance_p, 1, 1, 0, /*
355 Return non-nil if OBJECT is a font instance.
356 */
357 (object))
358 {
359 return FONT_INSTANCEP (object) ? Qt : Qnil;
360 }
361
362 DEFUN ("font-instance-name", Ffont_instance_name, 1, 1, 0, /*
363 Return the name used to allocate FONT-INSTANCE.
364 */
365 (font_instance))
366 {
367 CHECK_FONT_INSTANCE (font_instance);
368 return XFONT_INSTANCE (font_instance)->name;
369 }
370
371 DEFUN ("font-instance-ascent", Ffont_instance_ascent, 1, 1, 0, /*
372 Return the ascent in pixels of FONT-INSTANCE.
373 The returned value is the maximum ascent for all characters in the font,
374 where a character's ascent is the number of pixels above (and including)
375 the baseline.
376 */
377 (font_instance))
378 {
379 CHECK_FONT_INSTANCE (font_instance);
380 return make_int (XFONT_INSTANCE (font_instance)->ascent);
381 }
382
383 DEFUN ("font-instance-descent", Ffont_instance_descent, 1, 1, 0, /*
384 Return the descent in pixels of FONT-INSTANCE.
385 The returned value is the maximum descent for all characters in the font,
386 where a character's descent is the number of pixels below the baseline.
387 \(Many characters to do not have any descent. Typical characters with a
388 descent are lowercase p and lowercase g.)
389 */
390 (font_instance))
391 {
392 CHECK_FONT_INSTANCE (font_instance);
393 return make_int (XFONT_INSTANCE (font_instance)->descent);
394 }
395
396 DEFUN ("font-instance-width", Ffont_instance_width, 1, 1, 0, /*
397 Return the width in pixels of FONT-INSTANCE.
398 The returned value is the average width for all characters in the font.
399 */
400 (font_instance))
401 {
402 CHECK_FONT_INSTANCE (font_instance);
403 return make_int (XFONT_INSTANCE (font_instance)->width);
404 }
405
406 DEFUN ("font-instance-proportional-p", Ffont_instance_proportional_p, 1, 1, 0, /*
407 Return whether FONT-INSTANCE is proportional.
408 This means that different characters in the font have different widths.
409 */
410 (font_instance))
411 {
412 CHECK_FONT_INSTANCE (font_instance);
413 return XFONT_INSTANCE (font_instance)->proportional_p ? Qt : Qnil;
414 }
415
416 static Lisp_Object
417 font_instance_truename_internal (Lisp_Object font_instance,
418 Error_behavior errb)
419 {
420 struct Lisp_Font_Instance *f = XFONT_INSTANCE (font_instance);
421
422 if (NILP (f->device))
423 {
424 maybe_signal_simple_error ("Couldn't determine font truename",
425 font_instance, Qfont, errb);
426 return Qnil;
427 }
428
429 return DEVMETH_OR_GIVEN (XDEVICE (f->device),
430 font_instance_truename, (f, errb), f->name);
431 }
432
433 DEFUN ("font-instance-truename", Ffont_instance_truename, 1, 1, 0, /*
434 Return the canonical name of FONT-INSTANCE.
435 Font names are patterns which may match any number of fonts, of which
436 the first found is used. This returns an unambiguous name for that font
437 \(but not necessarily its only unambiguous name).
438 */
439 (font_instance))
440 {
441 CHECK_FONT_INSTANCE (font_instance);
442 return font_instance_truename_internal (font_instance, ERROR_ME);
443 }
444
445 DEFUN ("font-instance-properties", Ffont_instance_properties, 1, 1, 0, /*
446 Return the properties (an alist or nil) of FONT-INSTANCE.
447 */
448 (font_instance))
449 {
450 struct Lisp_Font_Instance *f;
451
452 CHECK_FONT_INSTANCE (font_instance);
453 f = XFONT_INSTANCE (font_instance);
454
455 if (NILP (f->device))
456 return Qnil;
457
458 return MAYBE_LISP_DEVMETH (XDEVICE (f->device),
459 font_instance_properties, (f));
460 }
461
462 DEFUN ("list-fonts", Flist_fonts, 1, 2, 0, /*
463 Return a list of font names matching the given pattern.
464 DEVICE specifies which device to search for names, and defaults to the
465 currently selected device.
466 */
467 (pattern, device))
468 {
469 CHECK_STRING (pattern);
470 XSETDEVICE (device, decode_device (device));
471
472 return MAYBE_LISP_DEVMETH (XDEVICE (device), list_fonts, (pattern, device));
473 }
474
475
476 /****************************************************************************
477 Color Object
478 ***************************************************************************/
479 DEFINE_SPECIFIER_TYPE (color);
480 /* Qcolor defined in general.c */
481
482 static void
483 color_create (Lisp_Object obj)
484 {
485 struct Lisp_Specifier *color = XCOLOR_SPECIFIER (obj);
486
487 COLOR_SPECIFIER_FACE (color) = Qnil;
488 COLOR_SPECIFIER_FACE_PROPERTY (color) = Qnil;
489 }
490
491 static void
492 color_mark (Lisp_Object obj)
493 {
494 struct Lisp_Specifier *color = XCOLOR_SPECIFIER (obj);
495
496 mark_object (COLOR_SPECIFIER_FACE (color));
497 mark_object (COLOR_SPECIFIER_FACE_PROPERTY (color));
498 }
499
500 /* No equal or hash methods; ignore the face the color is based off
501 of for `equal' */
502
503 static Lisp_Object
504 color_instantiate (Lisp_Object specifier, Lisp_Object matchspec,
505 Lisp_Object domain, Lisp_Object instantiator,
506 Lisp_Object depth)
507 {
508 /* When called, we're inside of call_with_suspended_errors(),
509 so we can freely error. */
510 Lisp_Object device = DFW_DEVICE (domain);
511 struct device *d = XDEVICE (device);
512
513 if (COLOR_INSTANCEP (instantiator))
514 {
515 /* If we are on the same device then we're done. Otherwise change
516 the instantiator to the name used to generate the pixel and let the
517 STRINGP case deal with it. */
518 if (NILP (device) /* Vthe_null_color_instance */
519 || EQ (device, XCOLOR_INSTANCE (instantiator)->device))
520 return instantiator;
521 else
522 instantiator = Fcolor_instance_name (instantiator);
523 }
524
525 if (STRINGP (instantiator))
526 {
527 /* First, look to see if we can retrieve a cached value. */
528 Lisp_Object instance =
529 Fgethash (instantiator, d->color_instance_cache, Qunbound);
530 /* Otherwise, make a new one. */
531 if (UNBOUNDP (instance))
532 {
533 /* make sure we cache the failures, too. */
534 instance = Fmake_color_instance (instantiator, device, Qt);
535 Fputhash (instantiator, instance, d->color_instance_cache);
536 }
537
538 return NILP (instance) ? Qunbound : instance;
539 }
540 else if (VECTORP (instantiator))
541 {
542 switch (XVECTOR_LENGTH (instantiator))
543 {
544 case 0:
545 if (DEVICE_TTY_P (d))
546 return Vthe_null_color_instance;
547 else
548 signal_simple_error ("Color instantiator [] only valid on TTY's",
549 device);
550
551 case 1:
552 if (NILP (COLOR_SPECIFIER_FACE (XCOLOR_SPECIFIER (specifier))))
553 signal_simple_error ("Color specifier not attached to a face",
554 instantiator);
555 return (FACE_PROPERTY_INSTANCE_1
556 (Fget_face (XVECTOR_DATA (instantiator)[0]),
557 COLOR_SPECIFIER_FACE_PROPERTY (XCOLOR_SPECIFIER (specifier)),
558 domain, ERROR_ME, 0, depth));
559
560 case 2:
561 return (FACE_PROPERTY_INSTANCE_1
562 (Fget_face (XVECTOR_DATA (instantiator)[0]),
563 XVECTOR_DATA (instantiator)[1], domain, ERROR_ME, 0, depth));
564
565 default:
566 abort ();
567 }
568 }
569 else if (NILP (instantiator))
570 {
571 if (DEVICE_TTY_P (d))
572 return Vthe_null_color_instance;
573 else
574 signal_simple_error ("Color instantiator [] only valid on TTY's",
575 device);
576 }
577 else
578 abort (); /* The spec validation routines are screwed up. */
579
580 return Qunbound;
581 }
582
583 static void
584 color_validate (Lisp_Object instantiator)
585 {
586 if (COLOR_INSTANCEP (instantiator) || STRINGP (instantiator))
587 return;
588 if (VECTORP (instantiator))
589 {
590 if (XVECTOR_LENGTH (instantiator) > 2)
591 signal_simple_error ("Inheritance vector must be of size 0 - 2",
592 instantiator);
593 else if (XVECTOR_LENGTH (instantiator) > 0)
594 {
595 Lisp_Object face = XVECTOR_DATA (instantiator)[0];
596
597 Fget_face (face);
598 if (XVECTOR_LENGTH (instantiator) == 2)
599 {
600 Lisp_Object field = XVECTOR_DATA (instantiator)[1];
601 if (!EQ (field, Qforeground) && !EQ (field, Qbackground))
602 signal_simple_error
603 ("Inheritance field must be `foreground' or `background'",
604 field);
605 }
606 }
607 }
608 else
609 signal_simple_error ("Invalid color instantiator", instantiator);
610 }
611
612 static void
613 color_after_change (Lisp_Object specifier, Lisp_Object locale)
614 {
615 Lisp_Object face = COLOR_SPECIFIER_FACE (XCOLOR_SPECIFIER (specifier));
616 Lisp_Object property =
617 COLOR_SPECIFIER_FACE_PROPERTY (XCOLOR_SPECIFIER (specifier));
618 if (!NILP (face))
619 face_property_was_changed (face, property, locale);
620 }
621
622 void
623 set_color_attached_to (Lisp_Object obj, Lisp_Object face, Lisp_Object property)
624 {
625 struct Lisp_Specifier *color = XCOLOR_SPECIFIER (obj);
626
627 COLOR_SPECIFIER_FACE (color) = face;
628 COLOR_SPECIFIER_FACE_PROPERTY (color) = property;
629 }
630
631 DEFUN ("color-specifier-p", Fcolor_specifier_p, 1, 1, 0, /*
632 Return t if OBJECT is a color specifier.
633
634 Valid instantiators for color specifiers are:
635
636 -- a string naming a color (e.g. under X this might be "lightseagreen2"
637 or "#F534B2")
638 -- a color instance (use that instance directly if the device matches,
639 or use the string that generated it)
640 -- a vector of no elements (only on TTY's; this means to set no color
641 at all, thus using the "natural" color of the terminal's text)
642 -- a vector of one or two elements: a face to inherit from, and
643 optionally a symbol naming which property of that face to inherit,
644 either `foreground' or `background' (if omitted, defaults to the same
645 property that this color specifier is used for; if this specifier is
646 not part of a face, the instantiator would not be valid)
647 */
648 (object))
649 {
650 return COLOR_SPECIFIERP (object) ? Qt : Qnil;
651 }
652
653
654 /****************************************************************************
655 Font Object
656 ***************************************************************************/
657 DEFINE_SPECIFIER_TYPE (font);
658 /* Qfont defined in general.c */
659
660 static void
661 font_create (Lisp_Object obj)
662 {
663 struct Lisp_Specifier *font = XFONT_SPECIFIER (obj);
664
665 FONT_SPECIFIER_FACE (font) = Qnil;
666 FONT_SPECIFIER_FACE_PROPERTY (font) = Qnil;
667 }
668
669 static void
670 font_mark (Lisp_Object obj)
671 {
672 struct Lisp_Specifier *font = XFONT_SPECIFIER (obj);
673
674 mark_object (FONT_SPECIFIER_FACE (font));
675 mark_object (FONT_SPECIFIER_FACE_PROPERTY (font));
676 }
677
678 /* No equal or hash methods; ignore the face the font is based off
679 of for `equal' */
680
681 #ifdef MULE
682
683 int
684 font_spec_matches_charset (struct device *d, Lisp_Object charset,
685 CONST Bufbyte *nonreloc, Lisp_Object reloc,
686 Bytecount offset, Bytecount length)
687 {
688 return DEVMETH_OR_GIVEN (d, font_spec_matches_charset,
689 (d, charset, nonreloc, reloc, offset, length),
690 1);
691 }
692
693 static void
694 font_validate_matchspec (Lisp_Object matchspec)
695 {
696 Fget_charset (matchspec);
697 }
698
699 #endif /* MULE */
700
701
702 static Lisp_Object
703 font_instantiate (Lisp_Object specifier, Lisp_Object matchspec,
704 Lisp_Object domain, Lisp_Object instantiator,
705 Lisp_Object depth)
706 {
707 /* When called, we're inside of call_with_suspended_errors(),
708 so we can freely error. */
709 Lisp_Object device = DFW_DEVICE (domain);
710 struct device *d = XDEVICE (device);
711 Lisp_Object instance;
712
713 #ifdef MULE
714 if (!UNBOUNDP (matchspec))
715 matchspec = Fget_charset (matchspec);
716 #endif
717
718 if (FONT_INSTANCEP (instantiator))
719 {
720 if (NILP (device)
721 || EQ (device, XFONT_INSTANCE (instantiator)->device))
722 {
723 #ifdef MULE
724 if (font_spec_matches_charset (d, matchspec, 0,
725 Ffont_instance_truename
726 (instantiator),
727 0, -1))
728 return instantiator;
729 #else
730 return instantiator;
731 #endif
732 }
733 instantiator = Ffont_instance_name (instantiator);
734 }
735
736 if (STRINGP (instantiator))
737 {
738 #ifdef MULE
739 if (!UNBOUNDP (matchspec))
740 {
741 /* The instantiator is a font spec that could match many
742 different fonts. We need to find one of those fonts
743 whose registry matches the registry of the charset in
744 MATCHSPEC. This is potentially a very slow operation,
745 as it involves doing an XListFonts() or equivalent to
746 iterate over all possible fonts, and a regexp match
747 on each one. So we cache the results. */
748 Lisp_Object matching_font = Qunbound;
749 Lisp_Object hash_table = Fgethash (matchspec, d->charset_font_cache,
750 Qunbound);
751 if (UNBOUNDP (hash_table))
752 {
753 /* need to make a sub hash table. */
754 hash_table = make_lisp_hash_table (20, HASH_TABLE_KEY_WEAK,
755 HASH_TABLE_EQUAL);
756 Fputhash (matchspec, hash_table, d->charset_font_cache);
757 }
758 else
759 matching_font = Fgethash (instantiator, hash_table, Qunbound);
760
761 if (UNBOUNDP (matching_font))
762 {
763 /* make sure we cache the failures, too. */
764 matching_font =
765 DEVMETH_OR_GIVEN (d, find_charset_font,
766 (device, instantiator, matchspec),
767 instantiator);
768 Fputhash (instantiator, matching_font, hash_table);
769 }
770 if (NILP (matching_font))
771 return Qunbound;
772 instantiator = matching_font;
773 }
774 #endif /* MULE */
775
776 /* First, look to see if we can retrieve a cached value. */
777 instance = Fgethash (instantiator, d->font_instance_cache, Qunbound);
778 /* Otherwise, make a new one. */
779 if (UNBOUNDP (instance))
780 {
781 /* make sure we cache the failures, too. */
782 instance = Fmake_font_instance (instantiator, device, Qt);
783 Fputhash (instantiator, instance, d->font_instance_cache);
784 }
785
786 return NILP (instance) ? Qunbound : instance;
787 }
788 else if (VECTORP (instantiator))
789 {
790 assert (XVECTOR_LENGTH (instantiator) == 1);
791 return (face_property_matching_instance
792 (Fget_face (XVECTOR_DATA (instantiator)[0]), Qfont,
793 matchspec, domain, ERROR_ME, 0, depth));
794 }
795 else if (NILP (instantiator))
796 return Qunbound;
797 else
798 abort (); /* Eh? */
799
800 return Qunbound;
801 }
802
803 static void
804 font_validate (Lisp_Object instantiator)
805 {
806 if (FONT_INSTANCEP (instantiator) || STRINGP (instantiator))
807 return;
808 if (VECTORP (instantiator))
809 {
810 if (XVECTOR_LENGTH (instantiator) != 1)
811 {
812 signal_simple_error
813 ("Vector length must be one for font inheritance", instantiator);
814 }
815 Fget_face (XVECTOR_DATA (instantiator)[0]);
816 }
817 else
818 signal_simple_error ("Must be string, vector, or font-instance",
819 instantiator);
820 }
821
822 static void
823 font_after_change (Lisp_Object specifier, Lisp_Object locale)
824 {
825 Lisp_Object face = FONT_SPECIFIER_FACE (XFONT_SPECIFIER (specifier));
826 Lisp_Object property =
827 FONT_SPECIFIER_FACE_PROPERTY (XFONT_SPECIFIER (specifier));
828 if (!NILP (face))
829 face_property_was_changed (face, property, locale);
830 }
831
832 void
833 set_font_attached_to (Lisp_Object obj, Lisp_Object face, Lisp_Object property)
834 {
835 struct Lisp_Specifier *font = XFONT_SPECIFIER (obj);
836
837 FONT_SPECIFIER_FACE (font) = face;
838 FONT_SPECIFIER_FACE_PROPERTY (font) = property;
839 }
840
841 DEFUN ("font-specifier-p", Ffont_specifier_p, 1, 1, 0, /*
842 Return non-nil if OBJECT is a font specifier.
843
844 Valid instantiators for font specifiers are:
845
846 -- a string naming a font (e.g. under X this might be
847 "-*-courier-medium-r-*-*-*-140-*-*-*-*-iso8859-*" for a 14-point
848 upright medium-weight Courier font)
849 -- a font instance (use that instance directly if the device matches,
850 or use the string that generated it)
851 -- a vector of no elements (only on TTY's; this means to set no font
852 at all, thus using the "natural" font of the terminal's text)
853 -- a vector of one element (a face to inherit from)
854 */
855 (object))
856 {
857 return FONT_SPECIFIERP (object) ? Qt : Qnil;
858 }
859
860
861 /*****************************************************************************
862 Face Boolean Object
863 ****************************************************************************/
864 DEFINE_SPECIFIER_TYPE (face_boolean);
865 Lisp_Object Qface_boolean;
866
867 static void
868 face_boolean_create (Lisp_Object obj)
869 {
870 struct Lisp_Specifier *face_boolean = XFACE_BOOLEAN_SPECIFIER (obj);
871
872 FACE_BOOLEAN_SPECIFIER_FACE (face_boolean) = Qnil;
873 FACE_BOOLEAN_SPECIFIER_FACE_PROPERTY (face_boolean) = Qnil;
874 }
875
876 static void
877 face_boolean_mark (Lisp_Object obj)
878 {
879 struct Lisp_Specifier *face_boolean = XFACE_BOOLEAN_SPECIFIER (obj);
880
881 mark_object (FACE_BOOLEAN_SPECIFIER_FACE (face_boolean));
882 mark_object (FACE_BOOLEAN_SPECIFIER_FACE_PROPERTY (face_boolean));
883 }
884
885 /* No equal or hash methods; ignore the face the face-boolean is based off
886 of for `equal' */
887
888 static Lisp_Object
889 face_boolean_instantiate (Lisp_Object specifier, Lisp_Object matchspec,
890 Lisp_Object domain, Lisp_Object instantiator,
891 Lisp_Object depth)
892 {
893 /* When called, we're inside of call_with_suspended_errors(),
894 so we can freely error. */
895 if (NILP (instantiator) || EQ (instantiator, Qt))
896 return instantiator;
897 else if (VECTORP (instantiator))
898 {
899 Lisp_Object retval;
900 Lisp_Object prop;
901 int instantiator_len = XVECTOR_LENGTH (instantiator);
902
903 assert (instantiator_len >= 1 && instantiator_len <= 3);
904 if (instantiator_len > 1)
905 prop = XVECTOR_DATA (instantiator)[1];
906 else
907 {
908 if (NILP (FACE_BOOLEAN_SPECIFIER_FACE
909 (XFACE_BOOLEAN_SPECIFIER (specifier))))
910 signal_simple_error
911 ("Face-boolean specifier not attached to a face", instantiator);
912 prop = FACE_BOOLEAN_SPECIFIER_FACE_PROPERTY
913 (XFACE_BOOLEAN_SPECIFIER (specifier));
914 }
915
916 retval = (FACE_PROPERTY_INSTANCE_1
917 (Fget_face (XVECTOR_DATA (instantiator)[0]),
918 prop, domain, ERROR_ME, 0, depth));
919
920 if (instantiator_len == 3 && !NILP (XVECTOR_DATA (instantiator)[2]))
921 retval = NILP (retval) ? Qt : Qnil;
922
923 return retval;
924 }
925 else
926 abort (); /* Eh? */
927
928 return Qunbound;
929 }
930
931 static void
932 face_boolean_validate (Lisp_Object instantiator)
933 {
934 if (NILP (instantiator) || EQ (instantiator, Qt))
935 return;
936 else if (VECTORP (instantiator) &&
937 (XVECTOR_LENGTH (instantiator) >= 1 &&
938 XVECTOR_LENGTH (instantiator) <= 3))
939 {
940 Lisp_Object face = XVECTOR_DATA (instantiator)[0];
941
942 Fget_face (face);
943
944 if (XVECTOR_LENGTH (instantiator) > 1)
945 {
946 Lisp_Object field = XVECTOR_DATA (instantiator)[1];
947 if (!EQ (field, Qunderline)
948 && !EQ (field, Qstrikethru)
949 && !EQ (field, Qhighlight)
950 && !EQ (field, Qdim)
951 && !EQ (field, Qblinking)
952 && !EQ (field, Qreverse))
953 signal_simple_error ("Invalid face-boolean inheritance field",
954 field);
955 }
956 }
957 else if (VECTORP (instantiator))
958 signal_simple_error ("Wrong length for face-boolean inheritance spec",
959 instantiator);
960 else
961 signal_simple_error ("Face-boolean instantiator must be nil, t, or vector",
962 instantiator);
963 }
964
965 static void
966 face_boolean_after_change (Lisp_Object specifier, Lisp_Object locale)
967 {
968 Lisp_Object face =
969 FACE_BOOLEAN_SPECIFIER_FACE (XFACE_BOOLEAN_SPECIFIER (specifier));
970 Lisp_Object property =
971 FACE_BOOLEAN_SPECIFIER_FACE_PROPERTY (XFACE_BOOLEAN_SPECIFIER (specifier));
972 if (!NILP (face))
973 face_property_was_changed (face, property, locale);
974 }
975
976 void
977 set_face_boolean_attached_to (Lisp_Object obj, Lisp_Object face,
978 Lisp_Object property)
979 {
980 struct Lisp_Specifier *face_boolean = XFACE_BOOLEAN_SPECIFIER (obj);
981
982 FACE_BOOLEAN_SPECIFIER_FACE (face_boolean) = face;
983 FACE_BOOLEAN_SPECIFIER_FACE_PROPERTY (face_boolean) = property;
984 }
985
986 DEFUN ("face-boolean-specifier-p", Fface_boolean_specifier_p, 1, 1, 0, /*
987 Return non-nil if OBJECT is a face-boolean specifier.
988
989 Valid instantiators for face-boolean specifiers are
990
991 -- t or nil
992 -- a vector of two or three elements: a face to inherit from,
993 optionally a symbol naming the property of that face to inherit from
994 (if omitted, defaults to the same property that this face-boolean
995 specifier is used for; if this specifier is not part of a face,
996 the instantiator would not be valid), and optionally a value which,
997 if non-nil, means to invert the sense of the inherited property.
998 */
999 (object))
1000 {
1001 return FACE_BOOLEAN_SPECIFIERP (object) ? Qt : Qnil;
1002 }
1003
1004
1005 /************************************************************************/
1006 /* initialization */
1007 /************************************************************************/
1008
1009 void
1010 syms_of_objects (void)
1011 {
1012 DEFSUBR (Fcolor_specifier_p);
1013 DEFSUBR (Ffont_specifier_p);
1014 DEFSUBR (Fface_boolean_specifier_p);
1015
1016 defsymbol (&Qcolor_instancep, "color-instance-p");
1017 DEFSUBR (Fmake_color_instance);
1018 DEFSUBR (Fcolor_instance_p);
1019 DEFSUBR (Fcolor_instance_name);
1020 DEFSUBR (Fcolor_instance_rgb_components);
1021 DEFSUBR (Fvalid_color_name_p);
1022
1023 defsymbol (&Qfont_instancep, "font-instance-p");
1024 DEFSUBR (Fmake_font_instance);
1025 DEFSUBR (Ffont_instance_p);
1026 DEFSUBR (Ffont_instance_name);
1027 DEFSUBR (Ffont_instance_ascent);
1028 DEFSUBR (Ffont_instance_descent);
1029 DEFSUBR (Ffont_instance_width);
1030 DEFSUBR (Ffont_instance_proportional_p);
1031 DEFSUBR (Ffont_instance_truename);
1032 DEFSUBR (Ffont_instance_properties);
1033 DEFSUBR (Flist_fonts);
1034
1035 /* Qcolor, Qfont defined in general.c */
1036 defsymbol (&Qface_boolean, "face-boolean");
1037 }
1038
1039 static const struct lrecord_description color_specifier_description[] = {
1040 { XD_LISP_OBJECT, specifier_data_offset + offsetof(struct color_specifier, face), 2 },
1041 { XD_END }
1042 };
1043
1044 static const struct lrecord_description font_specifier_description[] = {
1045 { XD_LISP_OBJECT, specifier_data_offset + offsetof(struct font_specifier, face), 2 },
1046 { XD_END }
1047 };
1048
1049 static const struct lrecord_description face_boolean_specifier_description[] = {
1050 { XD_LISP_OBJECT, specifier_data_offset + offsetof(struct face_boolean_specifier, face), 2 },
1051 { XD_END }
1052 };
1053
1054 void
1055 specifier_type_create_objects (void)
1056 {
1057 INITIALIZE_SPECIFIER_TYPE_WITH_DATA (color, "color", "color-specifier-p");
1058 INITIALIZE_SPECIFIER_TYPE_WITH_DATA (font, "font", "font-specifier-p");
1059 INITIALIZE_SPECIFIER_TYPE_WITH_DATA (face_boolean, "face-boolean",
1060 "face-boolean-specifier-p");
1061
1062 SPECIFIER_HAS_METHOD (color, instantiate);
1063 SPECIFIER_HAS_METHOD (font, instantiate);
1064 SPECIFIER_HAS_METHOD (face_boolean, instantiate);
1065
1066 SPECIFIER_HAS_METHOD (color, validate);
1067 SPECIFIER_HAS_METHOD (font, validate);
1068 SPECIFIER_HAS_METHOD (face_boolean, validate);
1069
1070 SPECIFIER_HAS_METHOD (color, create);
1071 SPECIFIER_HAS_METHOD (font, create);
1072 SPECIFIER_HAS_METHOD (face_boolean, create);
1073
1074 SPECIFIER_HAS_METHOD (color, mark);
1075 SPECIFIER_HAS_METHOD (font, mark);
1076 SPECIFIER_HAS_METHOD (face_boolean, mark);
1077
1078 SPECIFIER_HAS_METHOD (color, after_change);
1079 SPECIFIER_HAS_METHOD (font, after_change);
1080 SPECIFIER_HAS_METHOD (face_boolean, after_change);
1081
1082 #ifdef MULE
1083 SPECIFIER_HAS_METHOD (font, validate_matchspec);
1084 #endif
1085 }
1086
1087 void
1088 reinit_specifier_type_create_objects (void)
1089 {
1090 REINITIALIZE_SPECIFIER_TYPE (color);
1091 REINITIALIZE_SPECIFIER_TYPE (font);
1092 REINITIALIZE_SPECIFIER_TYPE (face_boolean);
1093 }
1094
1095 void
1096 reinit_vars_of_objects (void)
1097 {
1098 staticpro_nodump (&Vthe_null_color_instance);
1099 {
1100 struct Lisp_Color_Instance *c =
1101 alloc_lcrecord_type (struct Lisp_Color_Instance, &lrecord_color_instance);
1102 c->name = Qnil;
1103 c->device = Qnil;
1104 c->data = 0;
1105
1106 XSETCOLOR_INSTANCE (Vthe_null_color_instance, c);
1107 }
1108
1109 staticpro_nodump (&Vthe_null_font_instance);
1110 {
1111 struct Lisp_Font_Instance *f =
1112 alloc_lcrecord_type (struct Lisp_Font_Instance, &lrecord_font_instance);
1113 f->name = Qnil;
1114 f->device = Qnil;
1115 f->data = 0;
1116
1117 f->ascent = f->height = 0;
1118 f->descent = 0;
1119 f->width = 0;
1120 f->proportional_p = 0;
1121
1122 XSETFONT_INSTANCE (Vthe_null_font_instance, f);
1123 }
1124 }
1125
1126 void
1127 vars_of_objects (void)
1128 {
1129 reinit_vars_of_objects ();
1130 }