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1 ;;; faces.el --- Lisp faces
2
3 ;; Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
4 ;; 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
5
6 ;; Maintainer: FSF
7 ;; Keywords: internal
8
9 ;; This file is part of GNU Emacs.
10
11 ;; GNU Emacs is free software; you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; any later version.
15
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
20
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs; see the file COPYING. If not, write to the
23 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
24 ;; Boston, MA 02110-1301, USA.
25
26 ;;; Commentary:
27
28 ;;; Code:
29
30 (eval-when-compile
31 (require 'cl)
32 ;; Warning suppression -- can't require x-win in batch:
33 (autoload 'xw-defined-colors "x-win"))
34
35 (defvar help-xref-stack-item)
36 \f
37 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
38 ;;; Font selection.
39 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
40
41 (defgroup font-selection nil
42 "Influencing face font selection."
43 :group 'faces)
44
45
46 (defcustom face-font-selection-order
47 '(:width :height :weight :slant)
48 "*A list specifying how face font selection chooses fonts.
49 Each of the four symbols `:width', `:height', `:weight', and `:slant'
50 must appear once in the list, and the list must not contain any other
51 elements. Font selection tries to find a best matching font for
52 those face attributes first that appear first in the list. For
53 example, if `:slant' appears before `:height', font selection first
54 tries to find a font with a suitable slant, even if this results in
55 a font height that isn't optimal."
56 :tag "Font selection order"
57 :type '(list symbol symbol symbol symbol)
58 :group 'font-selection
59 :set #'(lambda (symbol value)
60 (set-default symbol value)
61 (internal-set-font-selection-order value)))
62
63
64 ;; This is defined originally in xfaces.c.
65 (defcustom face-font-family-alternatives
66 '(("courier" "fixed")
67 ("helv" "helvetica" "arial" "fixed"))
68 "*Alist of alternative font family names.
69 Each element has the form (FAMILY ALTERNATIVE1 ALTERNATIVE2 ...).
70 If fonts of family FAMILY can't be loaded, try ALTERNATIVE1, then
71 ALTERNATIVE2 etc."
72 :tag "Alternative font families to try"
73 :type '(repeat (repeat string))
74 :group 'font-selection
75 :set #'(lambda (symbol value)
76 (set-default symbol value)
77 (internal-set-alternative-font-family-alist value)))
78
79
80 ;; This is defined originally in xfaces.c.
81 (defcustom face-font-registry-alternatives
82 (if (eq system-type 'windows-nt)
83 '(("iso8859-1" "ms-oemlatin")
84 ("gb2312.1980" "gb2312")
85 ("jisx0208.1990" "jisx0208.1983" "jisx0208.1978")
86 ("ksc5601.1989" "ksx1001.1992" "ksc5601.1987")
87 ("muletibetan-2" "muletibetan-0"))
88 '(("gb2312.1980" "gb2312.80&gb8565.88" "gbk*")
89 ("jisx0208.1990" "jisx0208.1983" "jisx0208.1978")
90 ("ksc5601.1989" "ksx1001.1992" "ksc5601.1987")
91 ("muletibetan-2" "muletibetan-0")))
92 "*Alist of alternative font registry names.
93 Each element has the form (REGISTRY ALTERNATIVE1 ALTERNATIVE2 ...).
94 If fonts of registry REGISTRY can be loaded, font selection
95 tries to find a best matching font among all fonts of registry
96 REGISTRY, ALTERNATIVE1, ALTERNATIVE2, and etc."
97 :tag "Alternative font registries to try"
98 :type '(repeat (repeat string))
99 :version "21.1"
100 :group 'font-selection
101 :set #'(lambda (symbol value)
102 (set-default symbol value)
103 (internal-set-alternative-font-registry-alist value)))
104
105
106 \f
107 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
108 ;;; Creation, copying.
109 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
110
111
112 (defun face-list ()
113 "Return a list of all defined face names."
114 (mapcar #'car face-new-frame-defaults))
115
116
117 ;;; ### If not frame-local initialize by what X resources?
118
119 (defun make-face (face &optional no-init-from-resources)
120 "Define a new face with name FACE, a symbol.
121 NO-INIT-FROM-RESOURCES non-nil means don't initialize frame-local
122 variants of FACE from X resources. (X resources recognized are found
123 in the global variable `face-x-resources'.) If FACE is already known
124 as a face, leave it unmodified. Value is FACE."
125 (interactive "SMake face: ")
126 (unless (facep face)
127 ;; Make frame-local faces (this also makes the global one).
128 (dolist (frame (frame-list))
129 (internal-make-lisp-face face frame))
130 ;; Add the face to the face menu.
131 (when (fboundp 'facemenu-add-new-face)
132 (facemenu-add-new-face face))
133 ;; Define frame-local faces for all frames from X resources.
134 (unless no-init-from-resources
135 (make-face-x-resource-internal face)))
136 face)
137
138
139 (defun make-empty-face (face)
140 "Define a new, empty face with name FACE.
141 If the face already exists, it is left unmodified. Value is FACE."
142 (interactive "SMake empty face: ")
143 (make-face face 'no-init-from-resources))
144
145
146 (defun copy-face (old-face new-face &optional frame new-frame)
147 "Define a face just like OLD-FACE, with name NEW-FACE.
148
149 If NEW-FACE already exists as a face, it is modified to be like
150 OLD-FACE. If it doesn't already exist, it is created.
151
152 If the optional argument FRAME is given as a frame, NEW-FACE is
153 changed on FRAME only.
154 If FRAME is t, the frame-independent default specification for OLD-FACE
155 is copied to NEW-FACE.
156 If FRAME is nil, copying is done for the frame-independent defaults
157 and for each existing frame.
158
159 If the optional fourth argument NEW-FRAME is given,
160 copy the information from face OLD-FACE on frame FRAME
161 to NEW-FACE on frame NEW-FRAME."
162 (let ((inhibit-quit t))
163 (if (null frame)
164 (progn
165 (dolist (frame (frame-list))
166 (copy-face old-face new-face frame))
167 (copy-face old-face new-face t))
168 (internal-copy-lisp-face old-face new-face frame new-frame))
169 new-face))
170
171
172 \f
173 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
174 ;;; Obsolete functions
175 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
176
177 ;; The functions in this section are defined because Lisp packages use
178 ;; them, despite the prefix `internal-' suggesting that they are
179 ;; private to the face implementation.
180
181 (defun internal-find-face (name &optional frame)
182 "Retrieve the face named NAME.
183 Return nil if there is no such face.
184 If NAME is already a face, it is simply returned.
185 The optional argument FRAME is ignored."
186 (facep name))
187 (make-obsolete 'internal-find-face 'facep "21.1")
188
189
190 (defun internal-get-face (name &optional frame)
191 "Retrieve the face named NAME; error if there is none.
192 If NAME is already a face, it is simply returned.
193 The optional argument FRAME is ignored."
194 (or (facep name)
195 (check-face name)))
196 (make-obsolete 'internal-get-face "see `facep' and `check-face'." "21.1")
197
198 \f
199 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
200 ;;; Predicates, type checks.
201 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
202
203 (defun facep (face)
204 "Return non-nil if FACE is a face name or internal face object.
205 Return nil otherwise. A face name can be a string or a symbol.
206 An internal face object is a vector of the kind used internally
207 to record face data."
208 (internal-lisp-face-p face))
209
210
211 (defun check-face (face)
212 "Signal an error if FACE doesn't name a face.
213 Value is FACE."
214 (unless (facep face)
215 (error "Not a face: %s" face))
216 face)
217
218
219 ;; The ID returned is not to be confused with the internally used IDs
220 ;; of realized faces. The ID assigned to Lisp faces is used to
221 ;; support faces in display table entries.
222
223 (defun face-id (face &optional frame)
224 "Return the internal ID of face with name FACE.
225 The optional argument FRAME is ignored, since the internal face ID
226 of a face name is the same for all frames."
227 (check-face face)
228 (get face 'face))
229
230
231 (defun face-equal (face1 face2 &optional frame)
232 "Non-nil if faces FACE1 and FACE2 are equal.
233 Faces are considered equal if all their attributes are equal.
234 If the optional argument FRAME is given, report on FACE1 and FACE2 in that frame.
235 If FRAME is t, report on the defaults for FACE1 and FACE2 (for new frames).
236 If FRAME is omitted or nil, use the selected frame."
237 (internal-lisp-face-equal-p face1 face2 frame))
238
239
240 (defun face-differs-from-default-p (face &optional frame)
241 "Return non-nil if FACE displays differently from the default face.
242 If the optional argument FRAME is given, report on face FACE in that frame.
243 If FRAME is t, report on the defaults for face FACE (for new frames).
244 If FRAME is omitted or nil, use the selected frame."
245 (let ((attrs
246 '(:family :width :height :weight :slant :foreground
247 :background :underline :overline :strike-through
248 :box :inverse-video))
249 (differs nil))
250 (while (and attrs (not differs))
251 (let* ((attr (pop attrs))
252 (attr-val (face-attribute face attr frame t)))
253 (when (and
254 (not (eq attr-val 'unspecified))
255 (display-supports-face-attributes-p (list attr attr-val)
256 frame))
257 (setq differs attr))))
258 differs))
259
260
261 (defun face-nontrivial-p (face &optional frame)
262 "True if face FACE has some non-nil attribute.
263 If the optional argument FRAME is given, report on face FACE in that frame.
264 If FRAME is t, report on the defaults for face FACE (for new frames).
265 If FRAME is omitted or nil, use the selected frame."
266 (not (internal-lisp-face-empty-p face frame)))
267
268
269 \f
270 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
271 ;;; Setting face attributes from X resources.
272 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
273
274 (defcustom face-x-resources
275 '((:family (".attributeFamily" . "Face.AttributeFamily"))
276 (:width (".attributeWidth" . "Face.AttributeWidth"))
277 (:height (".attributeHeight" . "Face.AttributeHeight"))
278 (:weight (".attributeWeight" . "Face.AttributeWeight"))
279 (:slant (".attributeSlant" . "Face.AttributeSlant"))
280 (:foreground (".attributeForeground" . "Face.AttributeForeground"))
281 (:background (".attributeBackground" . "Face.AttributeBackground"))
282 (:overline (".attributeOverline" . "Face.AttributeOverline"))
283 (:strike-through (".attributeStrikeThrough" . "Face.AttributeStrikeThrough"))
284 (:box (".attributeBox" . "Face.AttributeBox"))
285 (:underline (".attributeUnderline" . "Face.AttributeUnderline"))
286 (:inverse-video (".attributeInverse" . "Face.AttributeInverse"))
287 (:stipple
288 (".attributeStipple" . "Face.AttributeStipple")
289 (".attributeBackgroundPixmap" . "Face.AttributeBackgroundPixmap"))
290 (:bold (".attributeBold" . "Face.AttributeBold"))
291 (:italic (".attributeItalic" . "Face.AttributeItalic"))
292 (:font (".attributeFont" . "Face.AttributeFont"))
293 (:inherit (".attributeInherit" . "Face.AttributeInherit")))
294 "*List of X resources and classes for face attributes.
295 Each element has the form (ATTRIBUTE ENTRY1 ENTRY2...) where ATTRIBUTE is
296 the name of a face attribute, and each ENTRY is a cons of the form
297 \(RESOURCE . CLASS) with RESOURCE being the resource and CLASS being the
298 X resource class for the attribute."
299 :type '(repeat (cons symbol (repeat (cons string string))))
300 :group 'faces)
301
302
303 (defun set-face-attribute-from-resource (face attribute resource class frame)
304 "Set FACE's ATTRIBUTE from X resource RESOURCE, class CLASS on FRAME.
305 Value is the attribute value specified by the resource, or nil
306 if not present. This function displays a message if the resource
307 specifies an invalid attribute."
308 (let* ((face-name (face-name face))
309 (value (internal-face-x-get-resource (concat face-name resource)
310 class frame)))
311 (when value
312 (condition-case ()
313 (internal-set-lisp-face-attribute-from-resource
314 face attribute (downcase value) frame)
315 (error
316 (message "Face %s, frame %s: invalid attribute %s %s from X resource"
317 face-name frame attribute value))))
318 value))
319
320
321 (defun set-face-attributes-from-resources (face frame)
322 "Set attributes of FACE from X resources for FRAME."
323 (when (memq (framep frame) '(x w32 mac))
324 (dolist (definition face-x-resources)
325 (let ((attribute (car definition)))
326 (dolist (entry (cdr definition))
327 (set-face-attribute-from-resource face attribute (car entry)
328 (cdr entry) frame))))))
329
330
331 (defun make-face-x-resource-internal (face &optional frame)
332 "Fill frame-local FACE on FRAME from X resources.
333 FRAME nil or not specified means do it for all frames."
334 (if (null frame)
335 (dolist (frame (frame-list))
336 (set-face-attributes-from-resources face frame))
337 (set-face-attributes-from-resources face frame)))
338
339
340 \f
341 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
342 ;;; Retrieving face attributes.
343 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
344
345 (defun face-name (face)
346 "Return the name of face FACE."
347 (symbol-name (check-face face)))
348
349
350 (defun face-attribute (face attribute &optional frame inherit)
351 "Return the value of FACE's ATTRIBUTE on FRAME.
352 If the optional argument FRAME is given, report on face FACE in that frame.
353 If FRAME is t, report on the defaults for face FACE (for new frames).
354 If FRAME is omitted or nil, use the selected frame.
355
356 If INHERIT is nil, only attributes directly defined by FACE are considered,
357 so the return value may be `unspecified', or a relative value.
358 If INHERIT is non-nil, FACE's definition of ATTRIBUTE is merged with the
359 faces specified by its `:inherit' attribute; however the return value
360 may still be `unspecified' or relative.
361 If INHERIT is a face or a list of faces, then the result is further merged
362 with that face (or faces), until it becomes specified and absolute.
363
364 To ensure that the return value is always specified and absolute, use a
365 value of `default' for INHERIT; this will resolve any unspecified or
366 relative values by merging with the `default' face (which is always
367 completely specified)."
368 (let ((value (internal-get-lisp-face-attribute face attribute frame)))
369 (when (and inherit (face-attribute-relative-p attribute value))
370 ;; VALUE is relative, so merge with inherited faces
371 (let ((inh-from (face-attribute face :inherit frame)))
372 (unless (or (null inh-from) (eq inh-from 'unspecified))
373 (condition-case nil
374 (setq value
375 (face-attribute-merged-with attribute value inh-from frame))
376 ;; The `inherit' attribute may point to non existent faces.
377 (error nil)))))
378 (when (and inherit
379 (not (eq inherit t))
380 (face-attribute-relative-p attribute value))
381 ;; We should merge with INHERIT as well
382 (setq value (face-attribute-merged-with attribute value inherit frame)))
383 value))
384
385 (defun face-attribute-merged-with (attribute value faces &optional frame)
386 "Merges ATTRIBUTE, initially VALUE, with faces from FACES until absolute.
387 FACES may be either a single face or a list of faces.
388 \[This is an internal function.]"
389 (cond ((not (face-attribute-relative-p attribute value))
390 value)
391 ((null faces)
392 value)
393 ((consp faces)
394 (face-attribute-merged-with
395 attribute
396 (face-attribute-merged-with attribute value (car faces) frame)
397 (cdr faces)
398 frame))
399 (t
400 (merge-face-attribute attribute
401 value
402 (face-attribute faces attribute frame t)))))
403
404
405 (defmacro face-attribute-specified-or (value &rest body)
406 "Return VALUE, unless it's `unspecified', in which case evaluate BODY and return the result."
407 (let ((temp (make-symbol "value")))
408 `(let ((,temp ,value))
409 (if (not (eq ,temp 'unspecified))
410 ,temp
411 ,@body))))
412
413 (defun face-foreground (face &optional frame inherit)
414 "Return the foreground color name of FACE, or nil if unspecified.
415 If the optional argument FRAME is given, report on face FACE in that frame.
416 If FRAME is t, report on the defaults for face FACE (for new frames).
417 If FRAME is omitted or nil, use the selected frame.
418
419 If INHERIT is nil, only a foreground color directly defined by FACE is
420 considered, so the return value may be nil.
421 If INHERIT is t, and FACE doesn't define a foreground color, then any
422 foreground color that FACE inherits through its `:inherit' attribute
423 is considered as well; however the return value may still be nil.
424 If INHERIT is a face or a list of faces, then it is used to try to
425 resolve an unspecified foreground color.
426
427 To ensure that a valid color is always returned, use a value of
428 `default' for INHERIT; this will resolve any unspecified values by
429 merging with the `default' face (which is always completely specified)."
430 (face-attribute-specified-or (face-attribute face :foreground frame inherit)
431 nil))
432
433 (defun face-background (face &optional frame inherit)
434 "Return the background color name of FACE, or nil if unspecified.
435 If the optional argument FRAME is given, report on face FACE in that frame.
436 If FRAME is t, report on the defaults for face FACE (for new frames).
437 If FRAME is omitted or nil, use the selected frame.
438
439 If INHERIT is nil, only a background color directly defined by FACE is
440 considered, so the return value may be nil.
441 If INHERIT is t, and FACE doesn't define a background color, then any
442 background color that FACE inherits through its `:inherit' attribute
443 is considered as well; however the return value may still be nil.
444 If INHERIT is a face or a list of faces, then it is used to try to
445 resolve an unspecified background color.
446
447 To ensure that a valid color is always returned, use a value of
448 `default' for INHERIT; this will resolve any unspecified values by
449 merging with the `default' face (which is always completely specified)."
450 (face-attribute-specified-or (face-attribute face :background frame inherit)
451 nil))
452
453 (defun face-stipple (face &optional frame inherit)
454 "Return the stipple pixmap name of FACE, or nil if unspecified.
455 If the optional argument FRAME is given, report on face FACE in that frame.
456 If FRAME is t, report on the defaults for face FACE (for new frames).
457 If FRAME is omitted or nil, use the selected frame.
458
459 If INHERIT is nil, only a stipple directly defined by FACE is
460 considered, so the return value may be nil.
461 If INHERIT is t, and FACE doesn't define a stipple, then any stipple
462 that FACE inherits through its `:inherit' attribute is considered as
463 well; however the return value may still be nil.
464 If INHERIT is a face or a list of faces, then it is used to try to
465 resolve an unspecified stipple.
466
467 To ensure that a valid stipple or nil is always returned, use a value of
468 `default' for INHERIT; this will resolve any unspecified values by merging
469 with the `default' face (which is always completely specified)."
470 (face-attribute-specified-or (face-attribute face :stipple frame inherit)
471 nil))
472
473
474 (defalias 'face-background-pixmap 'face-stipple)
475
476
477 (defun face-underline-p (face &optional frame)
478 "Return non-nil if FACE is underlined.
479 If the optional argument FRAME is given, report on face FACE in that frame.
480 If FRAME is t, report on the defaults for face FACE (for new frames).
481 If FRAME is omitted or nil, use the selected frame."
482 (eq (face-attribute face :underline frame) t))
483
484
485 (defun face-inverse-video-p (face &optional frame)
486 "Return non-nil if FACE is in inverse video on FRAME.
487 If the optional argument FRAME is given, report on face FACE in that frame.
488 If FRAME is t, report on the defaults for face FACE (for new frames).
489 If FRAME is omitted or nil, use the selected frame."
490 (eq (face-attribute face :inverse-video frame) t))
491
492
493 (defun face-bold-p (face &optional frame)
494 "Return non-nil if the font of FACE is bold on FRAME.
495 If the optional argument FRAME is given, report on face FACE in that frame.
496 If FRAME is t, report on the defaults for face FACE (for new frames).
497 If FRAME is omitted or nil, use the selected frame.
498 Use `face-attribute' for finer control."
499 (let ((bold (face-attribute face :weight frame)))
500 (memq bold '(semi-bold bold extra-bold ultra-bold))))
501
502
503 (defun face-italic-p (face &optional frame)
504 "Return non-nil if the font of FACE is italic on FRAME.
505 If the optional argument FRAME is given, report on face FACE in that frame.
506 If FRAME is t, report on the defaults for face FACE (for new frames).
507 If FRAME is omitted or nil, use the selected frame.
508 Use `face-attribute' for finer control."
509 (let ((italic (face-attribute face :slant frame)))
510 (memq italic '(italic oblique))))
511
512
513 \f
514 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
515 ;;; Face documentation.
516 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
517
518 (defun face-documentation (face)
519 "Get the documentation string for FACE.
520 If FACE is a face-alias, get the documentation for the target face."
521 (let ((alias (get face 'face-alias))
522 doc)
523 (if alias
524 (progn
525 (setq doc (get alias 'face-documentation))
526 (format "%s is an alias for the face `%s'.%s" face alias
527 (if doc (format "\n%s" doc)
528 "")))
529 (get face 'face-documentation))))
530
531
532 (defun set-face-documentation (face string)
533 "Set the documentation string for FACE to STRING."
534 ;; Perhaps the text should go in DOC.
535 (put face 'face-documentation (purecopy string)))
536
537
538 (defalias 'face-doc-string 'face-documentation)
539 (defalias 'set-face-doc-string 'set-face-documentation)
540
541
542 \f
543 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
544 ;; Setting face attributes.
545 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
546
547
548 (defvar inhibit-face-set-after-frame-default nil
549 "If non-nil, that tells `face-set-after-frame-default' to do nothing.")
550
551 (defun set-face-attribute (face frame &rest args)
552 "Set attributes of FACE on FRAME from ARGS.
553
554 FRAME nil means change attributes on all frames. FRAME t means change
555 the default for new frames (this is done automatically each time an
556 attribute is changed on all frames).
557
558 ARGS must come in pairs ATTRIBUTE VALUE. ATTRIBUTE must be a valid
559 face attribute name. All attributes can be set to `unspecified';
560 this fact is not further mentioned below.
561
562 The following attributes are recognized:
563
564 `:family'
565
566 VALUE must be a string specifying the font family, e.g. ``courier'',
567 or a fontset alias name. If a font family is specified, wild-cards `*'
568 and `?' are allowed.
569
570 `:width'
571
572 VALUE specifies the relative proportionate width of the font to use.
573 It must be one of the symbols `ultra-condensed', `extra-condensed',
574 `condensed', `semi-condensed', `normal', `semi-expanded', `expanded',
575 `extra-expanded', or `ultra-expanded'.
576
577 `:height'
578
579 VALUE must be either an integer specifying the height of the font to use
580 in 1/10 pt, a floating point number specifying the amount by which to
581 scale any underlying face, or a function, which is called with the old
582 height (from the underlying face), and should return the new height.
583
584 `:weight'
585
586 VALUE specifies the weight of the font to use. It must be one of the
587 symbols `ultra-bold', `extra-bold', `bold', `semi-bold', `normal',
588 `semi-light', `light', `extra-light', `ultra-light'.
589
590 `:slant'
591
592 VALUE specifies the slant of the font to use. It must be one of the
593 symbols `italic', `oblique', `normal', `reverse-italic', or
594 `reverse-oblique'.
595
596 `:foreground', `:background'
597
598 VALUE must be a color name, a string.
599
600 `:underline'
601
602 VALUE specifies whether characters in FACE should be underlined. If
603 VALUE is t, underline with foreground color of the face. If VALUE is
604 a string, underline with that color. If VALUE is nil, explicitly
605 don't underline.
606
607 `:overline'
608
609 VALUE specifies whether characters in FACE should be overlined. If
610 VALUE is t, overline with foreground color of the face. If VALUE is a
611 string, overline with that color. If VALUE is nil, explicitly don't
612 overline.
613
614 `:strike-through'
615
616 VALUE specifies whether characters in FACE should be drawn with a line
617 striking through them. If VALUE is t, use the foreground color of the
618 face. If VALUE is a string, strike-through with that color. If VALUE
619 is nil, explicitly don't strike through.
620
621 `:box'
622
623 VALUE specifies whether characters in FACE should have a box drawn
624 around them. If VALUE is nil, explicitly don't draw boxes. If
625 VALUE is t, draw a box with lines of width 1 in the foreground color
626 of the face. If VALUE is a string, the string must be a color name,
627 and the box is drawn in that color with a line width of 1. Otherwise,
628 VALUE must be a property list of the form `(:line-width WIDTH
629 :color COLOR :style STYLE)'. If a keyword/value pair is missing from
630 the property list, a default value will be used for the value, as
631 specified below. WIDTH specifies the width of the lines to draw; it
632 defaults to 1. If WIDTH is negative, the absolute value is the width
633 of the lines, and draw top/bottom lines inside the characters area,
634 not around it. COLOR is the name of the color to draw in, default is
635 the foreground color of the face for simple boxes, and the background
636 color of the face for 3D boxes. STYLE specifies whether a 3D box
637 should be draw. If STYLE is `released-button', draw a box looking
638 like a released 3D button. If STYLE is `pressed-button' draw a box
639 that appears like a pressed button. If STYLE is nil, the default if
640 the property list doesn't contain a style specification, draw a 2D
641 box.
642
643 `:inverse-video'
644
645 VALUE specifies whether characters in FACE should be displayed in
646 inverse video. VALUE must be one of t or nil.
647
648 `:stipple'
649
650 If VALUE is a string, it must be the name of a file of pixmap data.
651 The directories listed in the `x-bitmap-file-path' variable are
652 searched. Alternatively, VALUE may be a list of the form (WIDTH
653 HEIGHT DATA) where WIDTH and HEIGHT are the size in pixels, and DATA
654 is a string containing the raw bits of the bitmap. VALUE nil means
655 explicitly don't use a stipple pattern.
656
657 For convenience, attributes `:family', `:width', `:height', `:weight',
658 and `:slant' may also be set in one step from an X font name:
659
660 `:font'
661
662 Set font-related face attributes from VALUE. VALUE must be a valid
663 XLFD font name. If it is a font name pattern, the first matching font
664 will be used.
665
666 For compatibility with Emacs 20, keywords `:bold' and `:italic' can
667 be used to specify that a bold or italic font should be used. VALUE
668 must be t or nil in that case. A value of `unspecified' is not allowed.
669
670 `:inherit'
671
672 VALUE is the name of a face from which to inherit attributes, or a list
673 of face names. Attributes from inherited faces are merged into the face
674 like an underlying face would be, with higher priority than underlying faces."
675 (let ((where (if (null frame) 0 frame)))
676 (setq args (purecopy args))
677 ;; If we set the new-frame defaults, this face is modified outside Custom.
678 (if (memq where '(0 t))
679 (put (or (get face 'face-alias) face) 'face-modified t))
680 (while args
681 ;; Don't recursively set the attributes from the frame's font param
682 ;; when we update the frame's font param fro the attributes.
683 (let ((inhibit-face-set-after-frame-default t))
684 (internal-set-lisp-face-attribute face (car args)
685 (purecopy (cadr args))
686 where))
687 (setq args (cdr (cdr args))))))
688
689
690 (defun make-face-bold (face &optional frame noerror)
691 "Make the font of FACE be bold, if possible.
692 FRAME nil or not specified means change face on all frames.
693 Argument NOERROR is ignored and retained for compatibility.
694 Use `set-face-attribute' for finer control of the font weight."
695 (interactive (list (read-face-name "Make which face bold")))
696 (set-face-attribute face frame :weight 'bold))
697
698
699 (defun make-face-unbold (face &optional frame noerror)
700 "Make the font of FACE be non-bold, if possible.
701 FRAME nil or not specified means change face on all frames.
702 Argument NOERROR is ignored and retained for compatibility."
703 (interactive (list (read-face-name "Make which face non-bold")))
704 (set-face-attribute face frame :weight 'normal))
705
706
707 (defun make-face-italic (face &optional frame noerror)
708 "Make the font of FACE be italic, if possible.
709 FRAME nil or not specified means change face on all frames.
710 Argument NOERROR is ignored and retained for compatibility.
711 Use `set-face-attribute' for finer control of the font slant."
712 (interactive (list (read-face-name "Make which face italic")))
713 (set-face-attribute face frame :slant 'italic))
714
715
716 (defun make-face-unitalic (face &optional frame noerror)
717 "Make the font of FACE be non-italic, if possible.
718 FRAME nil or not specified means change face on all frames.
719 Argument NOERROR is ignored and retained for compatibility."
720 (interactive (list (read-face-name "Make which face non-italic")))
721 (set-face-attribute face frame :slant 'normal))
722
723
724 (defun make-face-bold-italic (face &optional frame noerror)
725 "Make the font of FACE be bold and italic, if possible.
726 FRAME nil or not specified means change face on all frames.
727 Argument NOERROR is ignored and retained for compatibility.
728 Use `set-face-attribute' for finer control of font weight and slant."
729 (interactive (list (read-face-name "Make which face bold-italic")))
730 (set-face-attribute face frame :weight 'bold :slant 'italic))
731
732
733 (defun set-face-font (face font &optional frame)
734 "Change font-related attributes of FACE to those of FONT (a string).
735 FRAME nil or not specified means change face on all frames.
736 This sets the attributes `:family', `:width', `:height', `:weight',
737 and `:slant'. When called interactively, prompt for the face and font."
738 (interactive (read-face-and-attribute :font))
739 (set-face-attribute face frame :font font))
740
741
742 ;; Implementation note: Emulating gray background colors with a
743 ;; stipple pattern is now part of the face realization process, and is
744 ;; done in C depending on the frame on which the face is realized.
745
746 (defun set-face-background (face color &optional frame)
747 "Change the background color of face FACE to COLOR (a string).
748 FRAME nil or not specified means change face on all frames.
749 COLOR can be a system-defined color name (see `list-colors-display')
750 or a hex spec of the form #RRGGBB.
751 When called interactively, prompts for the face and color."
752 (interactive (read-face-and-attribute :background))
753 (set-face-attribute face frame :background (or color 'unspecified)))
754
755
756 (defun set-face-foreground (face color &optional frame)
757 "Change the foreground color of face FACE to COLOR (a string).
758 FRAME nil or not specified means change face on all frames.
759 COLOR can be a system-defined color name (see `list-colors-display')
760 or a hex spec of the form #RRGGBB.
761 When called interactively, prompts for the face and color."
762 (interactive (read-face-and-attribute :foreground))
763 (set-face-attribute face frame :foreground (or color 'unspecified)))
764
765
766 (defun set-face-stipple (face stipple &optional frame)
767 "Change the stipple pixmap of face FACE to STIPPLE.
768 FRAME nil or not specified means change face on all frames.
769 STIPPLE should be a string, the name of a file of pixmap data.
770 The directories listed in the `x-bitmap-file-path' variable are searched.
771
772 Alternatively, STIPPLE may be a list of the form (WIDTH HEIGHT DATA)
773 where WIDTH and HEIGHT are the size in pixels,
774 and DATA is a string, containing the raw bits of the bitmap."
775 (interactive (read-face-and-attribute :stipple))
776 (set-face-attribute face frame :stipple (or stipple 'unspecified)))
777
778
779 (defun set-face-underline-p (face underline &optional frame)
780 "Specify whether face FACE is underlined.
781 UNDERLINE nil means FACE explicitly doesn't underline.
782 UNDERLINE non-nil means FACE explicitly does underlining
783 with the same of the foreground color.
784 If UNDERLINE is a string, underline with the color named UNDERLINE.
785 FRAME nil or not specified means change face on all frames.
786 Use `set-face-attribute' to ``unspecify'' underlining."
787 (interactive
788 (let ((list (read-face-and-attribute :underline)))
789 (list (car list) (eq (car (cdr list)) t))))
790 (set-face-attribute face frame :underline underline))
791
792 (define-obsolete-function-alias 'set-face-underline
793 'set-face-underline-p "22.1")
794
795
796 (defun set-face-inverse-video-p (face inverse-video-p &optional frame)
797 "Specify whether face FACE is in inverse video.
798 INVERSE-VIDEO-P non-nil means FACE displays explicitly in inverse video.
799 INVERSE-VIDEO-P nil means FACE explicitly is not in inverse video.
800 FRAME nil or not specified means change face on all frames.
801 Use `set-face-attribute' to ``unspecify'' the inverse video attribute."
802 (interactive
803 (let ((list (read-face-and-attribute :inverse-video)))
804 (list (car list) (eq (car (cdr list)) t))))
805 (set-face-attribute face frame :inverse-video inverse-video-p))
806
807
808 (defun set-face-bold-p (face bold-p &optional frame)
809 "Specify whether face FACE is bold.
810 BOLD-P non-nil means FACE should explicitly display bold.
811 BOLD-P nil means FACE should explicitly display non-bold.
812 FRAME nil or not specified means change face on all frames.
813 Use `set-face-attribute' or `modify-face' for finer control."
814 (if (null bold-p)
815 (make-face-unbold face frame)
816 (make-face-bold face frame)))
817
818
819 (defun set-face-italic-p (face italic-p &optional frame)
820 "Specify whether face FACE is italic.
821 ITALIC-P non-nil means FACE should explicitly display italic.
822 ITALIC-P nil means FACE should explicitly display non-italic.
823 FRAME nil or not specified means change face on all frames.
824 Use `set-face-attribute' or `modify-face' for finer control."
825 (if (null italic-p)
826 (make-face-unitalic face frame)
827 (make-face-italic face frame)))
828
829
830 (defalias 'set-face-background-pixmap 'set-face-stipple)
831
832
833 (defun invert-face (face &optional frame)
834 "Swap the foreground and background colors of FACE.
835 If FRAME is omitted or nil, it means change face on all frames.
836 If FACE specifies neither foreground nor background color,
837 set its foreground and background to the background and foreground
838 of the default face. Value is FACE."
839 (interactive (list (read-face-name "Invert face")))
840 (let ((fg (face-attribute face :foreground frame))
841 (bg (face-attribute face :background frame)))
842 (if (not (and (eq fg 'unspecified) (eq bg 'unspecified)))
843 (set-face-attribute face frame :foreground bg :background fg)
844 (set-face-attribute face frame
845 :foreground
846 (face-attribute 'default :background frame)
847 :background
848 (face-attribute 'default :foreground frame))))
849 face)
850
851 \f
852 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
853 ;;; Interactively modifying faces.
854 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
855
856 (defun read-face-name (prompt &optional string-describing-default multiple)
857 "Read a face, defaulting to the face or faces on the char after point.
858 If it has the property `read-face-name', that overrides the `face' property.
859 PROMPT should be a string that describes what the caller will do with the face;
860 it should not end in a space.
861 STRING-DESCRIBING-DEFAULT should describe what default the caller will use if
862 the user just types RET; you can omit it.
863 If MULTIPLE is non-nil, return a list of faces (possibly only one).
864 Otherwise, return a single face."
865 (let ((faceprop (or (get-char-property (point) 'read-face-name)
866 (get-char-property (point) 'face)))
867 (aliasfaces nil)
868 (nonaliasfaces nil)
869 faces)
870 ;; Try to get a face name from the buffer.
871 (if (memq (intern-soft (thing-at-point 'symbol)) (face-list))
872 (setq faces (list (intern-soft (thing-at-point 'symbol)))))
873 ;; Add the named faces that the `face' property uses.
874 (if (and (listp faceprop)
875 ;; Don't treat an attribute spec as a list of faces.
876 (not (keywordp (car faceprop)))
877 (not (memq (car faceprop) '(foreground-color background-color))))
878 (dolist (f faceprop)
879 (if (symbolp f)
880 (push f faces)))
881 (if (symbolp faceprop)
882 (push faceprop faces)))
883 (delete-dups faces)
884
885 ;; Build up the completion tables.
886 (mapatoms (lambda (s)
887 (if (custom-facep s)
888 (if (get s 'face-alias)
889 (push (symbol-name s) aliasfaces)
890 (push (symbol-name s) nonaliasfaces)))))
891
892 ;; If we only want one, and the default is more than one,
893 ;; discard the unwanted ones now.
894 (unless multiple
895 (if faces
896 (setq faces (list (car faces)))))
897 (require 'crm)
898 (let* ((input
899 ;; Read the input.
900 (completing-read-multiple
901 (if (or faces string-describing-default)
902 (format "%s (default %s): " prompt
903 (if faces (mapconcat 'symbol-name faces ",")
904 string-describing-default))
905 (format "%s: " prompt))
906 (complete-in-turn nonaliasfaces aliasfaces)
907 nil t nil nil
908 (if faces (mapconcat 'symbol-name faces ","))))
909 ;; Canonicalize the output.
910 (output
911 (cond ((or (equal input "") (equal input '("")))
912 faces)
913 ((stringp input)
914 (mapcar 'intern (split-string input ", *" t)))
915 ((listp input)
916 (mapcar 'intern input))
917 (input))))
918 ;; Return either a list of faces or just one face.
919 (if multiple
920 output
921 (car output)))))
922
923
924 (defun face-valid-attribute-values (attribute &optional frame)
925 "Return valid values for face attribute ATTRIBUTE.
926 The optional argument FRAME is used to determine available fonts
927 and colors. If it is nil or not specified, the selected frame is
928 used. Value is an alist of (NAME . VALUE) if ATTRIBUTE expects a value
929 out of a set of discrete values. Value is `integerp' if ATTRIBUTE expects
930 an integer value."
931 (let ((valid
932 (case attribute
933 (:family
934 (if window-system
935 (mapcar #'(lambda (x) (cons (car x) (car x)))
936 (x-font-family-list))
937 ;; Only one font on TTYs.
938 (list (cons "default" "default"))))
939 ((:width :weight :slant :inverse-video)
940 (mapcar #'(lambda (x) (cons (symbol-name x) x))
941 (internal-lisp-face-attribute-values attribute)))
942 ((:underline :overline :strike-through :box)
943 (if window-system
944 (nconc (mapcar #'(lambda (x) (cons (symbol-name x) x))
945 (internal-lisp-face-attribute-values attribute))
946 (mapcar #'(lambda (c) (cons c c))
947 (defined-colors frame)))
948 (mapcar #'(lambda (x) (cons (symbol-name x) x))
949 (internal-lisp-face-attribute-values attribute))))
950 ((:foreground :background)
951 (mapcar #'(lambda (c) (cons c c))
952 (defined-colors frame)))
953 ((:height)
954 'integerp)
955 (:stipple
956 (and (memq window-system '(x w32 mac))
957 (mapcar #'list
958 (apply #'nconc
959 (mapcar (lambda (dir)
960 (and (file-readable-p dir)
961 (file-directory-p dir)
962 (directory-files dir)))
963 x-bitmap-file-path)))))
964 (:inherit
965 (cons '("none" . nil)
966 (mapcar #'(lambda (c) (cons (symbol-name c) c))
967 (face-list))))
968 (t
969 (error "Internal error")))))
970 (if (and (listp valid) (not (memq attribute '(:inherit))))
971 (nconc (list (cons "unspecified" 'unspecified)) valid)
972 valid)))
973
974
975 (defvar face-attribute-name-alist
976 '((:family . "font family")
977 (:width . "character set width")
978 (:height . "height in 1/10 pt")
979 (:weight . "weight")
980 (:slant . "slant")
981 (:underline . "underline")
982 (:overline . "overline")
983 (:strike-through . "strike-through")
984 (:box . "box")
985 (:inverse-video . "inverse-video display")
986 (:foreground . "foreground color")
987 (:background . "background color")
988 (:stipple . "background stipple")
989 (:inherit . "inheritance"))
990 "An alist of descriptive names for face attributes.
991 Each element has the form (ATTRIBUTE-NAME . DESCRIPTION) where
992 ATTRIBUTE-NAME is a face attribute name (a keyword symbol), and
993 DESCRIPTION is a descriptive name for ATTRIBUTE-NAME.")
994
995
996 (defun face-descriptive-attribute-name (attribute)
997 "Return a descriptive name for ATTRIBUTE."
998 (cdr (assq attribute face-attribute-name-alist)))
999
1000
1001 (defun face-read-string (face default name &optional completion-alist)
1002 "Interactively read a face attribute string value.
1003 FACE is the face whose attribute is read. If non-nil, DEFAULT is the
1004 default string to return if no new value is entered. NAME is a
1005 descriptive name of the attribute for prompting. COMPLETION-ALIST is an
1006 alist of valid values, if non-nil.
1007
1008 Entering nothing accepts the default string DEFAULT.
1009 Value is the new attribute value."
1010 ;; Capitalize NAME (we don't use `capitalize' because that capitalizes
1011 ;; each word in a string separately).
1012 (setq name (concat (upcase (substring name 0 1)) (substring name 1)))
1013 (let* ((completion-ignore-case t)
1014 (value (completing-read
1015 (if default
1016 (format "%s for face `%s' (default %s): "
1017 name face default)
1018 (format "%s for face `%s': " name face))
1019 completion-alist nil nil nil nil default)))
1020 (if (equal value "") default value)))
1021
1022
1023 (defun face-read-integer (face default name)
1024 "Interactively read an integer face attribute value.
1025 FACE is the face whose attribute is read. DEFAULT is the default
1026 value to return if no new value is entered. NAME is a descriptive
1027 name of the attribute for prompting. Value is the new attribute value."
1028 (let ((new-value
1029 (face-read-string face
1030 (format "%s" default)
1031 name
1032 (list (cons "unspecified" 'unspecified)))))
1033 (cond ((equal new-value "unspecified")
1034 'unspecified)
1035 ((member new-value '("unspecified-fg" "unspecified-bg"))
1036 new-value)
1037 (t
1038 (string-to-number new-value)))))
1039
1040
1041 (defun read-face-attribute (face attribute &optional frame)
1042 "Interactively read a new value for FACE's ATTRIBUTE.
1043 Optional argument FRAME nil or unspecified means read an attribute value
1044 of a global face. Value is the new attribute value."
1045 (let* ((old-value (face-attribute face attribute frame))
1046 (attribute-name (face-descriptive-attribute-name attribute))
1047 (valid (face-valid-attribute-values attribute frame))
1048 new-value)
1049 ;; Represent complex attribute values as strings by printing them
1050 ;; out. Stipple can be a vector; (WIDTH HEIGHT DATA). Box can be
1051 ;; a list `(:width WIDTH :color COLOR)' or `(:width WIDTH :shadow
1052 ;; SHADOW)'.
1053 (when (and (or (eq attribute :stipple)
1054 (eq attribute :box))
1055 (or (consp old-value)
1056 (vectorp old-value)))
1057 (setq old-value (prin1-to-string old-value)))
1058 (cond ((listp valid)
1059 (let ((default
1060 (or (car (rassoc old-value valid))
1061 (format "%s" old-value))))
1062 (setq new-value
1063 (face-read-string face default attribute-name valid))
1064 (if (equal new-value default)
1065 ;; Nothing changed, so don't bother with all the stuff
1066 ;; below. In particular, this avoids a non-tty color
1067 ;; from being canonicalized for a tty when the user
1068 ;; just uses the default.
1069 (setq new-value old-value)
1070 ;; Terminal frames can support colors that don't appear
1071 ;; explicitly in VALID, using color approximation code
1072 ;; in tty-colors.el.
1073 (when (and (memq attribute '(:foreground :background))
1074 (not (memq window-system '(x w32 mac)))
1075 (not (member new-value
1076 '("unspecified"
1077 "unspecified-fg" "unspecified-bg"))))
1078 (setq new-value (car (tty-color-desc new-value frame))))
1079 (when (assoc new-value valid)
1080 (setq new-value (cdr (assoc new-value valid)))))))
1081 ((eq valid 'integerp)
1082 (setq new-value (face-read-integer face old-value attribute-name)))
1083 (t (error "Internal error")))
1084 ;; Convert stipple and box value text we read back to a list or
1085 ;; vector if it looks like one. This makes the assumption that a
1086 ;; pixmap file name won't start with an open-paren.
1087 (when (and (or (eq attribute :stipple)
1088 (eq attribute :box))
1089 (stringp new-value)
1090 (string-match "^[[(]" new-value))
1091 (setq new-value (read new-value)))
1092 new-value))
1093
1094
1095 (defun read-face-font (face &optional frame)
1096 "Read the name of a font for FACE on FRAME.
1097 If optional argument FRAME is nil or omitted, use the selected frame."
1098 (let ((completion-ignore-case t))
1099 (completing-read (format "Set font attributes of face `%s' from font: " face)
1100 (x-list-fonts "*" nil frame))))
1101
1102
1103 (defun read-all-face-attributes (face &optional frame)
1104 "Interactively read all attributes for FACE.
1105 If optional argument FRAME is nil or omitted, use the selected frame.
1106 Value is a property list of attribute names and new values."
1107 (let (result)
1108 (dolist (attribute face-attribute-name-alist result)
1109 (setq result (cons (car attribute)
1110 (cons (read-face-attribute face (car attribute) frame)
1111 result))))))
1112
1113 (defun modify-face (&optional face foreground background stipple
1114 bold-p italic-p underline inverse-p frame)
1115 "Modify attributes of faces interactively.
1116 If optional argument FRAME is nil or omitted, modify the face used
1117 for newly created frame, i.e. the global face.
1118 For non-interactive use, `set-face-attribute' is preferred.
1119 When called from Lisp, if FACE is nil, all arguments but FRAME are ignored
1120 and the face and its settings are obtained by querying the user."
1121 (interactive)
1122 (if face
1123 (set-face-attribute face frame
1124 :foreground (or foreground 'unspecified)
1125 :background (or background 'unspecified)
1126 :stipple stipple
1127 :bold bold-p
1128 :italic italic-p
1129 :underline underline
1130 :inverse-video inverse-p)
1131 (setq face (read-face-name "Modify face"))
1132 (apply #'set-face-attribute face frame
1133 (read-all-face-attributes face frame))))
1134
1135 (defun read-face-and-attribute (attribute &optional frame)
1136 "Read face name and face attribute value.
1137 ATTRIBUTE is the attribute whose new value is read.
1138 FRAME nil or unspecified means read attribute value of global face.
1139 Value is a list (FACE NEW-VALUE) where FACE is the face read
1140 \(a symbol), and NEW-VALUE is value read."
1141 (cond ((eq attribute :font)
1142 (let* ((prompt "Set font-related attributes of face")
1143 (face (read-face-name prompt))
1144 (font (read-face-font face frame)))
1145 (list face font)))
1146 (t
1147 (let* ((attribute-name (face-descriptive-attribute-name attribute))
1148 (prompt (format "Set %s of face" attribute-name))
1149 (face (read-face-name prompt))
1150 (new-value (read-face-attribute face attribute frame)))
1151 (list face new-value)))))
1152
1153
1154 \f
1155 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1156 ;;; Listing faces.
1157 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1158
1159 (defvar list-faces-sample-text
1160 "abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1161 "*Text string to display as the sample text for `list-faces-display'.")
1162
1163
1164 ;; The name list-faces would be more consistent, but let's avoid a
1165 ;; conflict with Lucid, which uses that name differently.
1166
1167 (defvar help-xref-stack)
1168 (defun list-faces-display (&optional regexp)
1169 "List all faces, using the same sample text in each.
1170 The sample text is a string that comes from the variable
1171 `list-faces-sample-text'.
1172
1173 If REGEXP is non-nil, list only those faces with names matching
1174 this regular expression. When called interactively with a prefix
1175 arg, prompt for a regular expression."
1176 (interactive (list (and current-prefix-arg
1177 (read-string "List faces matching regexp: "))))
1178 (let ((all-faces (zerop (length regexp)))
1179 (frame (selected-frame))
1180 (max-length 0)
1181 faces line-format
1182 disp-frame window face-name)
1183 ;; We filter and take the max length in one pass
1184 (setq faces
1185 (delq nil
1186 (mapcar (lambda (f)
1187 (let ((s (symbol-name f)))
1188 (when (or all-faces (string-match regexp s))
1189 (setq max-length (max (length s) max-length))
1190 f)))
1191 (sort (face-list) #'string-lessp))))
1192 (unless faces
1193 (error "No faces matching \"%s\"" regexp))
1194 (setq max-length (1+ max-length)
1195 line-format (format "%%-%ds" max-length))
1196 (with-output-to-temp-buffer "*Faces*"
1197 (save-excursion
1198 (set-buffer standard-output)
1199 (setq truncate-lines t)
1200 (insert
1201 (substitute-command-keys
1202 (concat
1203 "Use "
1204 (if (display-mouse-p) "\\[help-follow-mouse] or ")
1205 "\\[help-follow] on a face name to customize it\n"
1206 "or on its sample text for a description of the face.\n\n")))
1207 (setq help-xref-stack nil)
1208 (dolist (face faces)
1209 (setq face-name (symbol-name face))
1210 (insert (format line-format face-name))
1211 ;; Hyperlink to a customization buffer for the face. Using
1212 ;; the help xref mechanism may not be the best way.
1213 (save-excursion
1214 (save-match-data
1215 (search-backward face-name)
1216 (setq help-xref-stack-item `(list-faces-display ,regexp))
1217 (help-xref-button 0 'help-customize-face face)))
1218 (let ((beg (point))
1219 (line-beg (line-beginning-position)))
1220 (insert list-faces-sample-text)
1221 ;; Hyperlink to a help buffer for the face.
1222 (save-excursion
1223 (save-match-data
1224 (search-backward list-faces-sample-text)
1225 (help-xref-button 0 'help-face face)))
1226 (insert "\n")
1227 (put-text-property beg (1- (point)) 'face face)
1228 ;; Make all face commands default to the proper face
1229 ;; anywhere in the line.
1230 (put-text-property line-beg (1- (point)) 'read-face-name face)
1231 ;; If the sample text has multiple lines, line up all of them.
1232 (goto-char beg)
1233 (forward-line 1)
1234 (while (not (eobp))
1235 (insert-char ?\s max-length)
1236 (forward-line 1))))
1237 (goto-char (point-min)))
1238 (print-help-return-message))
1239 ;; If the *Faces* buffer appears in a different frame,
1240 ;; copy all the face definitions from FRAME,
1241 ;; so that the display will reflect the frame that was selected.
1242 (setq window (get-buffer-window (get-buffer "*Faces*") t))
1243 (setq disp-frame (if window (window-frame window)
1244 (car (frame-list))))
1245 (or (eq frame disp-frame)
1246 (let ((faces (face-list)))
1247 (while faces
1248 (copy-face (car faces) (car faces) frame disp-frame)
1249 (setq faces (cdr faces)))))))
1250
1251
1252 (defun describe-face (face &optional frame)
1253 "Display the properties of face FACE on FRAME.
1254 Interactively, FACE defaults to the faces of the character after point
1255 and FRAME defaults to the selected frame.
1256
1257 If the optional argument FRAME is given, report on face FACE in that frame.
1258 If FRAME is t, report on the defaults for face FACE (for new frames).
1259 If FRAME is omitted or nil, use the selected frame."
1260 (interactive (list (read-face-name "Describe face" "= `default' face" t)))
1261 (let* ((attrs '((:family . "Family")
1262 (:width . "Width")
1263 (:height . "Height")
1264 (:weight . "Weight")
1265 (:slant . "Slant")
1266 (:foreground . "Foreground")
1267 (:background . "Background")
1268 (:underline . "Underline")
1269 (:overline . "Overline")
1270 (:strike-through . "Strike-through")
1271 (:box . "Box")
1272 (:inverse-video . "Inverse")
1273 (:stipple . "Stipple")
1274 (:font . "Font or fontset")
1275 (:inherit . "Inherit")))
1276 (max-width (apply #'max (mapcar #'(lambda (x) (length (cdr x)))
1277 attrs))))
1278 (help-setup-xref (list #'describe-face face) (interactive-p))
1279 (unless face
1280 (setq face 'default))
1281 (if (not (listp face))
1282 (setq face (list face)))
1283 (with-output-to-temp-buffer (help-buffer)
1284 (save-excursion
1285 (set-buffer standard-output)
1286 (dolist (f face)
1287 (insert "Face: " (symbol-name f))
1288 (if (not (facep f))
1289 (insert " undefined face.\n")
1290 (let ((customize-label "customize this face")
1291 file-name)
1292 (insert (concat " (" (propertize "sample" 'font-lock-face f) ")"))
1293 (princ (concat " (" customize-label ")\n"))
1294 (insert "Documentation: "
1295 (or (face-documentation f)
1296 "Not documented as a face.")
1297 "\n")
1298 (with-current-buffer standard-output
1299 (save-excursion
1300 (re-search-backward
1301 (concat "\\(" customize-label "\\)") nil t)
1302 (help-xref-button 1 'help-customize-face f)))
1303 ;; The next 4 sexps are copied from describe-function-1
1304 ;; and simplified.
1305 (setq file-name (symbol-file f 'defface))
1306 (setq file-name (describe-simplify-lib-file-name file-name))
1307 (when file-name
1308 (princ "Defined in `")
1309 (princ file-name)
1310 (princ "'")
1311 ;; Make a hyperlink to the library.
1312 (save-excursion
1313 (re-search-backward "`\\([^`']+\\)'" nil t)
1314 (help-xref-button 1 'help-face-def f file-name))
1315 (princ ".")
1316 (terpri)
1317 (terpri))
1318 (dolist (a attrs)
1319 (let ((attr (face-attribute f (car a) frame)))
1320 (insert (make-string (- max-width (length (cdr a))) ?\s)
1321 (cdr a) ": " (format "%s" attr))
1322 (if (and (eq (car a) :inherit)
1323 (not (eq attr 'unspecified)))
1324 ;; Make a hyperlink to the parent face.
1325 (save-excursion
1326 (re-search-backward ": \\([^:]+\\)" nil t)
1327 (help-xref-button 1 'help-face attr)))
1328 (insert "\n")))))
1329 (terpri)))
1330 (print-help-return-message))))
1331
1332 \f
1333 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1334 ;;; Face specifications (defface).
1335 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1336
1337 ;; Parameter FRAME Is kept for call compatibility to with previous
1338 ;; face implementation.
1339
1340 (defun face-attr-construct (face &optional frame)
1341 "Return a `defface'-style attribute list for FACE on FRAME.
1342 Value is a property list of pairs ATTRIBUTE VALUE for all specified
1343 face attributes of FACE where ATTRIBUTE is the attribute name and
1344 VALUE is the specified value of that attribute."
1345 (let (result)
1346 (dolist (entry face-attribute-name-alist result)
1347 (let* ((attribute (car entry))
1348 (value (face-attribute face attribute)))
1349 (unless (eq value 'unspecified)
1350 (setq result (nconc (list attribute value) result)))))))
1351
1352
1353 (defun face-spec-set-match-display (display frame)
1354 "Non-nil if DISPLAY matches FRAME.
1355 DISPLAY is part of a spec such as can be used in `defface'.
1356 If FRAME is nil, the current FRAME is used."
1357 (let* ((conjuncts display)
1358 conjunct req options
1359 ;; t means we have succeeded against all the conjuncts in
1360 ;; DISPLAY that have been tested so far.
1361 (match t))
1362 (if (eq conjuncts t)
1363 (setq conjuncts nil))
1364 (while (and conjuncts match)
1365 (setq conjunct (car conjuncts)
1366 conjuncts (cdr conjuncts)
1367 req (car conjunct)
1368 options (cdr conjunct)
1369 match (cond ((eq req 'type)
1370 (or (memq window-system options)
1371 ;; FIXME: This should be revisited to use
1372 ;; display-graphic-p, provided that the
1373 ;; color selection depends on the number
1374 ;; of supported colors, and all defface's
1375 ;; are changed to look at number of colors
1376 ;; instead of (type graphic) etc.
1377 (and (null window-system)
1378 (memq 'tty options))
1379 (and (memq 'motif options)
1380 (featurep 'motif))
1381 (and (memq 'gtk options)
1382 (featurep 'gtk))
1383 (and (memq 'lucid options)
1384 (featurep 'x-toolkit)
1385 (not (featurep 'motif))
1386 (not (featurep 'gtk)))
1387 (and (memq 'x-toolkit options)
1388 (featurep 'x-toolkit))))
1389 ((eq req 'min-colors)
1390 (>= (display-color-cells frame) (car options)))
1391 ((eq req 'class)
1392 (memq (frame-parameter frame 'display-type) options))
1393 ((eq req 'background)
1394 (memq (frame-parameter frame 'background-mode)
1395 options))
1396 ((eq req 'supports)
1397 (display-supports-face-attributes-p options frame))
1398 (t (error "Unknown req `%S' with options `%S'"
1399 req options)))))
1400 match))
1401
1402
1403 (defun face-spec-choose (spec &optional frame)
1404 "Choose the proper attributes for FRAME, out of SPEC.
1405 If SPEC is nil, return nil."
1406 (unless frame
1407 (setq frame (selected-frame)))
1408 (let ((tail spec)
1409 result defaults)
1410 (while tail
1411 (let* ((entry (pop tail))
1412 (display (car entry))
1413 (attrs (cdr entry))
1414 thisval)
1415 ;; Get the attributes as actually specified by this alternative.
1416 (setq thisval
1417 (if (null (cdr attrs)) ;; was (listp (car attrs))
1418 ;; Old-style entry, the attribute list is the
1419 ;; first element.
1420 (car attrs)
1421 attrs))
1422
1423 ;; If the condition is `default', that sets the default
1424 ;; for following conditions.
1425 (if (eq display 'default)
1426 (setq defaults thisval)
1427 ;; Otherwise, if it matches, use it.
1428 (when (face-spec-set-match-display display frame)
1429 (setq result thisval)
1430 (setq tail nil)))))
1431 (if defaults (append result defaults) result)))
1432
1433
1434 (defun face-spec-reset-face (face &optional frame)
1435 "Reset all attributes of FACE on FRAME to unspecified."
1436 (let ((attrs face-attribute-name-alist))
1437 (while attrs
1438 (let ((attr-and-name (car attrs)))
1439 (set-face-attribute face frame (car attr-and-name) 'unspecified))
1440 (setq attrs (cdr attrs)))))
1441
1442
1443 (defun face-spec-set (face spec &optional frame)
1444 "Set FACE's attributes according to the first matching entry in SPEC.
1445 FRAME is the frame whose frame-local face is set. FRAME nil means
1446 do it on all frames. See `defface' for information about SPEC.
1447 If SPEC is nil, do nothing."
1448 (let ((attrs (face-spec-choose spec frame)))
1449 (when spec
1450 (face-spec-reset-face face frame))
1451 (while attrs
1452 (let ((attribute (car attrs))
1453 (value (car (cdr attrs))))
1454 ;; Support some old-style attribute names and values.
1455 (case attribute
1456 (:bold (setq attribute :weight value (if value 'bold 'normal)))
1457 (:italic (setq attribute :slant value (if value 'italic 'normal)))
1458 ((:foreground :background)
1459 ;; Compatibility with 20.x. Some bogus face specs seem to
1460 ;; exist containing things like `:foreground nil'.
1461 (if (null value) (setq value 'unspecified)))
1462 (t (unless (assq attribute face-x-resources)
1463 (setq attribute nil))))
1464 (when attribute
1465 (set-face-attribute face frame attribute value)))
1466 (setq attrs (cdr (cdr attrs)))))
1467 ;; When we reset the face based on its spec, then it is unmodified
1468 ;; as far as Custom is concerned.
1469 (if (null frame)
1470 (put (or (get face 'face-alias) face) 'face-modified nil)))
1471
1472
1473 (defun face-attr-match-p (face attrs &optional frame)
1474 "Return t if attributes of FACE match values in plist ATTRS.
1475 Optional parameter FRAME is the frame whose definition of FACE
1476 is used. If nil or omitted, use the selected frame."
1477 (unless frame
1478 (setq frame (selected-frame)))
1479 (let ((list face-attribute-name-alist)
1480 (match t))
1481 (while (and match (not (null list)))
1482 (let* ((attr (car (car list)))
1483 (specified-value
1484 (if (plist-member attrs attr)
1485 (plist-get attrs attr)
1486 'unspecified))
1487 (value-now (face-attribute face attr frame)))
1488 (setq match (equal specified-value value-now))
1489 (setq list (cdr list))))
1490 match))
1491
1492 (defun face-spec-match-p (face spec &optional frame)
1493 "Return t if FACE, on FRAME, matches what SPEC says it should look like."
1494 (face-attr-match-p face (face-spec-choose spec frame) frame))
1495
1496 (defsubst face-default-spec (face)
1497 "Return the default face-spec for FACE, ignoring any user customization.
1498 If there is no default for FACE, return nil."
1499 (get face 'face-defface-spec))
1500
1501 (defsubst face-user-default-spec (face)
1502 "Return the user's customized face-spec for FACE, or the default if none.
1503 If there is neither a user setting nor a default for FACE, return nil."
1504 (or (get face 'customized-face)
1505 (get face 'saved-face)
1506 (face-default-spec face)))
1507
1508 \f
1509 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1510 ;;; Frame-type independent color support.
1511 ;;; We keep the old x-* names as aliases for back-compatibility.
1512 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1513
1514 (defun defined-colors (&optional frame)
1515 "Return a list of colors supported for a particular frame.
1516 The argument FRAME specifies which frame to try.
1517 The value may be different for frames on different display types.
1518 If FRAME doesn't support colors, the value is nil.
1519 If FRAME is nil, that stands for the selected frame."
1520 (if (memq (framep (or frame (selected-frame))) '(x w32 mac))
1521 (xw-defined-colors frame)
1522 (mapcar 'car (tty-color-alist frame))))
1523 (defalias 'x-defined-colors 'defined-colors)
1524
1525 (defun color-defined-p (color &optional frame)
1526 "Return non-nil if color COLOR is supported on frame FRAME.
1527 If FRAME is omitted or nil, use the selected frame.
1528 If COLOR is the symbol `unspecified' or one of the strings
1529 \"unspecified-fg\" or \"unspecified-bg\", the value is nil."
1530 (if (member color '(unspecified "unspecified-bg" "unspecified-fg"))
1531 nil
1532 (if (member (framep (or frame (selected-frame))) '(x w32 mac))
1533 (xw-color-defined-p color frame)
1534 (numberp (tty-color-translate color frame)))))
1535 (defalias 'x-color-defined-p 'color-defined-p)
1536
1537 (defun color-values (color &optional frame)
1538 "Return a description of the color named COLOR on frame FRAME.
1539 The value is a list of integer RGB values--(RED GREEN BLUE).
1540 These values appear to range from 0 to 65280 or 65535, depending
1541 on the system; white is \(65280 65280 65280\) or \(65535 65535 65535\).
1542 If FRAME is omitted or nil, use the selected frame.
1543 If FRAME cannot display COLOR, the value is nil.
1544 If COLOR is the symbol `unspecified' or one of the strings
1545 \"unspecified-fg\" or \"unspecified-bg\", the value is nil."
1546 (if (member color '(unspecified "unspecified-fg" "unspecified-bg"))
1547 nil
1548 (if (memq (framep (or frame (selected-frame))) '(x w32 mac))
1549 (xw-color-values color frame)
1550 (tty-color-values color frame))))
1551 (defalias 'x-color-values 'color-values)
1552
1553 (defun display-color-p (&optional display)
1554 "Return t if DISPLAY supports color.
1555 The optional argument DISPLAY specifies which display to ask about.
1556 DISPLAY should be either a frame or a display name (a string).
1557 If omitted or nil, that stands for the selected frame's display."
1558 (if (memq (framep-on-display display) '(x w32 mac))
1559 (xw-display-color-p display)
1560 (tty-display-color-p display)))
1561 (defalias 'x-display-color-p 'display-color-p)
1562
1563 (defun display-grayscale-p (&optional display)
1564 "Return non-nil if frames on DISPLAY can display shades of gray."
1565 (let ((frame-type (framep-on-display display)))
1566 (cond
1567 ((memq frame-type '(x w32 mac))
1568 (x-display-grayscale-p display))
1569 (t
1570 (> (tty-color-gray-shades display) 2)))))
1571
1572 \f
1573 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1574 ;;; Background mode.
1575 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1576
1577 (defcustom frame-background-mode nil
1578 "*The brightness of the background.
1579 Set this to the symbol `dark' if your background color is dark,
1580 `light' if your background is light, or nil (automatic by default)
1581 if you want Emacs to examine the brightness for you. Don't set this
1582 variable with `setq'; this won't have the expected effect."
1583 :group 'faces
1584 :set #'(lambda (var value)
1585 (set-default var value)
1586 (mapc 'frame-set-background-mode (frame-list)))
1587 :initialize 'custom-initialize-changed
1588 :type '(choice (const dark)
1589 (const light)
1590 (const :tag "automatic" nil)))
1591
1592 (defvar default-frame-background-mode nil
1593 "Internal variable for the default brightness of the background.
1594 Emacs sets it automatically depending on the terminal type.
1595 The value `nil' means `dark'. If Emacs runs in non-windowed
1596 mode from `xterm' or a similar terminal emulator, the value is
1597 `light'. On rxvt terminals, the value depends on the environment
1598 variable COLORFGBG.")
1599
1600 (defun frame-set-background-mode (frame)
1601 "Set up display-dependent faces on FRAME.
1602 Display-dependent faces are those which have different definitions
1603 according to the `background-mode' and `display-type' frame parameters."
1604 (let* ((bg-resource
1605 (and window-system
1606 (x-get-resource "backgroundMode" "BackgroundMode")))
1607 (bg-color (frame-parameter frame 'background-color))
1608 (bg-mode
1609 (cond (frame-background-mode)
1610 (bg-resource
1611 (intern (downcase bg-resource)))
1612 ((and (null window-system) (null bg-color))
1613 ;; No way to determine this automatically (?).
1614 (or default-frame-background-mode 'dark))
1615 ;; Unspecified frame background color can only happen
1616 ;; on tty's.
1617 ((member bg-color '(unspecified "unspecified-bg"))
1618 (or default-frame-background-mode 'dark))
1619 ((equal bg-color "unspecified-fg") ; inverted colors
1620 (if (eq default-frame-background-mode 'light) 'dark 'light))
1621 ((>= (apply '+ (color-values bg-color frame))
1622 ;; Just looking at the screen, colors whose
1623 ;; values add up to .6 of the white total
1624 ;; still look dark to me.
1625 (* (apply '+ (color-values "white" frame)) .6))
1626 'light)
1627 (t 'dark)))
1628 (display-type
1629 (cond ((null window-system)
1630 (if (tty-display-color-p frame) 'color 'mono))
1631 ((display-color-p frame)
1632 'color)
1633 ((x-display-grayscale-p frame)
1634 'grayscale)
1635 (t 'mono)))
1636 (old-bg-mode
1637 (frame-parameter frame 'background-mode))
1638 (old-display-type
1639 (frame-parameter frame 'display-type)))
1640
1641 (unless (and (eq bg-mode old-bg-mode) (eq display-type old-display-type))
1642 (let ((locally-modified-faces nil))
1643 ;; Before modifying the frame parameters, we collect a list of
1644 ;; faces that don't match what their face-spec says they should
1645 ;; look like; we then avoid changing these faces below. A
1646 ;; negative list is used on the assumption that most faces will
1647 ;; be unmodified, so we can avoid consing in the common case.
1648 (dolist (face (face-list))
1649 (when (not (face-spec-match-p face
1650 (face-user-default-spec face)
1651 (selected-frame)))
1652 (push face locally-modified-faces)))
1653 ;; Now change to the new frame parameters
1654 (modify-frame-parameters frame
1655 (list (cons 'background-mode bg-mode)
1656 (cons 'display-type display-type)))
1657 ;; For all named faces, choose face specs matching the new frame
1658 ;; parameters, unless they have been locally modified.
1659 (dolist (face (face-list))
1660 (unless (memq face locally-modified-faces)
1661 (face-spec-set face (face-user-default-spec face) frame)))))))
1662
1663 \f
1664 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1665 ;;; Frame creation.
1666 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1667
1668 (defun x-handle-named-frame-geometry (parameters)
1669 "Add geometry parameters for a named frame to parameter list PARAMETERS.
1670 Value is the new parameter list."
1671 (let* ((name (or (cdr (assq 'name parameters))
1672 (cdr (assq 'name default-frame-alist))))
1673 (x-resource-name name)
1674 (res-geometry (if name (x-get-resource "geometry" "Geometry"))))
1675 (when res-geometry
1676 (let ((parsed (x-parse-geometry res-geometry)))
1677 ;; If the resource specifies a position, call the position
1678 ;; and size "user-specified".
1679 (when (or (assq 'top parsed)
1680 (assq 'left parsed))
1681 (setq parsed (append '((user-position . t) (user-size . t)) parsed)))
1682 ;; Put the geometry parameters at the end. Copy
1683 ;; default-frame-alist so that they go after it.
1684 (setq parameters (append parameters default-frame-alist parsed))))
1685 parameters))
1686
1687
1688 (defun x-handle-reverse-video (frame parameters)
1689 "Handle the reverse-video frame parameter and X resource.
1690 `x-create-frame' does not handle this one."
1691 (when (cdr (or (assq 'reverse parameters)
1692 (assq 'reverse default-frame-alist)
1693 (let ((resource (x-get-resource "reverseVideo"
1694 "ReverseVideo")))
1695 (if resource
1696 (cons nil (member (downcase resource)
1697 '("on" "true")))))))
1698 (let* ((params (frame-parameters frame))
1699 (bg (cdr (assq 'foreground-color params)))
1700 (fg (cdr (assq 'background-color params))))
1701 (modify-frame-parameters frame
1702 (list (cons 'foreground-color fg)
1703 (cons 'background-color bg)))
1704 (if (equal bg (cdr (assq 'border-color params)))
1705 (modify-frame-parameters frame
1706 (list (cons 'border-color fg))))
1707 (if (equal bg (cdr (assq 'mouse-color params)))
1708 (modify-frame-parameters frame
1709 (list (cons 'mouse-color fg))))
1710 (if (equal bg (cdr (assq 'cursor-color params)))
1711 (modify-frame-parameters frame
1712 (list (cons 'cursor-color fg)))))))
1713
1714
1715 (defun x-create-frame-with-faces (&optional parameters)
1716 "Create a frame from optional frame parameters PARAMETERS.
1717 Parameters not specified by PARAMETERS are taken from
1718 `default-frame-alist'. If PARAMETERS specify a frame name,
1719 handle X geometry resources for that name. If either PARAMETERS
1720 or `default-frame-alist' contains a `reverse' parameter, or
1721 the X resource ``reverseVideo'' is present, handle that.
1722 Value is the new frame created."
1723 (setq parameters (x-handle-named-frame-geometry parameters))
1724 (let ((visibility-spec (assq 'visibility parameters))
1725 (frame-list (frame-list))
1726 (frame (x-create-frame (cons '(visibility . nil) parameters)))
1727 success)
1728 (unwind-protect
1729 (progn
1730 (x-handle-reverse-video frame parameters)
1731 (frame-set-background-mode frame)
1732 (face-set-after-frame-default frame)
1733 (if (or (null frame-list) (null visibility-spec))
1734 (make-frame-visible frame)
1735 (modify-frame-parameters frame (list visibility-spec)))
1736 (setq success t))
1737 (unless success
1738 (delete-frame frame)))
1739 frame))
1740
1741 (defun face-set-after-frame-default (frame)
1742 "Set frame-local faces of FRAME from face specs and resources.
1743 Initialize colors of certain faces from frame parameters."
1744 (unless inhibit-face-set-after-frame-default
1745 (if (face-attribute 'default :font t)
1746 (set-face-attribute 'default frame :font
1747 (face-attribute 'default :font t))
1748 (set-face-attribute 'default frame :family
1749 (face-attribute 'default :family t))
1750 (set-face-attribute 'default frame :height
1751 (face-attribute 'default :height t))
1752 (set-face-attribute 'default frame :slant
1753 (face-attribute 'default :slant t))
1754 (set-face-attribute 'default frame :weight
1755 (face-attribute 'default :weight t))
1756 (set-face-attribute 'default frame :width
1757 (face-attribute 'default :width t))))
1758 ;; Find attributes that should be initialized from frame parameters.
1759 (let ((face-params '((foreground-color default :foreground)
1760 (background-color default :background)
1761 (border-color border :background)
1762 (cursor-color cursor :background)
1763 (scroll-bar-foreground scroll-bar :foreground)
1764 (scroll-bar-background scroll-bar :background)
1765 (mouse-color mouse :background)))
1766 apply-params)
1767 (dolist (param face-params)
1768 (let* ((value (frame-parameter frame (nth 0 param)))
1769 (face (nth 1 param))
1770 (attr (nth 2 param))
1771 (default-value (face-attribute face attr t)))
1772 ;; Compile a list of face attributes to set, but don't set
1773 ;; them yet. The call to make-face-x-resource-internal,
1774 ;; below, can change frame parameters, and the final set of
1775 ;; frame parameters should be the ones acquired at this step.
1776 (if (eq default-value 'unspecified)
1777 ;; The face spec does not specify a new-frame value for
1778 ;; this attribute. Check if the existing frame parameter
1779 ;; specifies it.
1780 (if value
1781 (push (list face frame attr value) apply-params))
1782 ;; The face spec specifies a value for this attribute, to be
1783 ;; applied to the face on all new frames.
1784 (push (list face frame attr default-value) apply-params))))
1785 ;; Initialize faces from face specs and X resources. The
1786 ;; condition-case prevents invalid specs from causing frame
1787 ;; creation to fail.
1788 (dolist (face (delq 'default (face-list)))
1789 (condition-case ()
1790 (progn
1791 (face-spec-set face (face-user-default-spec face) frame)
1792 (internal-merge-in-global-face face frame)
1793 (if (memq window-system '(x w32 mac))
1794 (make-face-x-resource-internal face frame)))
1795 (error nil)))
1796 ;; Apply the attributes specified by frame parameters. This
1797 ;; rewrites parameters changed by make-face-x-resource-internal
1798 (dolist (param apply-params)
1799 (apply 'set-face-attribute param))))
1800
1801 (defun tty-handle-reverse-video (frame parameters)
1802 "Handle the reverse-video frame parameter for terminal frames."
1803 (when (cdr (or (assq 'reverse parameters)
1804 (assq 'reverse default-frame-alist)))
1805 (let* ((params (frame-parameters frame))
1806 (bg (cdr (assq 'foreground-color params)))
1807 (fg (cdr (assq 'background-color params))))
1808 (modify-frame-parameters frame
1809 (list (cons 'foreground-color fg)
1810 (cons 'background-color bg)))
1811 (if (equal bg (cdr (assq 'mouse-color params)))
1812 (modify-frame-parameters frame
1813 (list (cons 'mouse-color fg))))
1814 (if (equal bg (cdr (assq 'cursor-color params)))
1815 (modify-frame-parameters frame
1816 (list (cons 'cursor-color fg)))))))
1817
1818
1819 (defun tty-create-frame-with-faces (&optional parameters)
1820 "Create a frame from optional frame parameters PARAMETERS.
1821 Parameters not specified by PARAMETERS are taken from
1822 `default-frame-alist'. If either PARAMETERS or `default-frame-alist'
1823 contains a `reverse' parameter, handle that. Value is the new frame
1824 created."
1825 (let ((frame (make-terminal-frame parameters))
1826 success)
1827 (unwind-protect
1828 (progn
1829 (tty-handle-reverse-video frame (frame-parameters frame))
1830 (frame-set-background-mode frame)
1831 (face-set-after-frame-default frame)
1832 (setq success t))
1833 (unless success
1834 (delete-frame frame)))
1835 frame))
1836
1837
1838 ;; Called from C function init_display to initialize faces of the
1839 ;; dumped terminal frame on startup.
1840
1841 (defun tty-set-up-initial-frame-faces ()
1842 (let ((frame (selected-frame)))
1843 (frame-set-background-mode frame)
1844 (face-set-after-frame-default frame)))
1845
1846
1847
1848 \f
1849 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1850 ;;; Compatiblity with 20.2
1851 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1852
1853 ;; Update a frame's faces when we change its default font.
1854
1855 (defalias 'frame-update-faces 'ignore "")
1856 (make-obsolete 'frame-update-faces "no longer necessary." "21.1")
1857
1858 ;; Update the colors of FACE, after FRAME's own colors have been
1859 ;; changed.
1860
1861 (define-obsolete-function-alias 'frame-update-face-colors
1862 'frame-set-background-mode "21.1")
1863
1864 \f
1865 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1866 ;;; Standard faces.
1867 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1868
1869 (defgroup basic-faces nil
1870 "The standard faces of Emacs."
1871 :group 'faces)
1872
1873 (defface default
1874 '((t nil))
1875 "Basic default face."
1876 :group 'basic-faces)
1877
1878 (defface bold
1879 '((t :weight bold))
1880 "Basic bold face."
1881 :group 'basic-faces)
1882
1883 (defface italic
1884 '((((supports :slant italic))
1885 :slant italic)
1886 (((supports :underline t))
1887 :underline t)
1888 (t
1889 ;; default to italic, even it doesn't appear to be supported,
1890 ;; because in some cases the display engine will do it's own
1891 ;; workaround (to `dim' on ttys)
1892 :slant italic))
1893 "Basic italic face."
1894 :group 'basic-faces)
1895
1896 (defface bold-italic
1897 '((t :weight bold :slant italic))
1898 "Basic bold-italic face."
1899 :group 'basic-faces)
1900
1901 (defface underline
1902 '((((supports :underline t))
1903 :underline t)
1904 (((supports :weight bold))
1905 :weight bold)
1906 (t :underline t))
1907 "Basic underlined face."
1908 :group 'basic-faces)
1909
1910 (defface fixed-pitch
1911 '((t :family "courier"))
1912 "The basic fixed-pitch face."
1913 :group 'basic-faces)
1914
1915 (defface variable-pitch
1916 '((t :family "helv"))
1917 "The basic variable-pitch face."
1918 :group 'basic-faces)
1919
1920 (defface shadow
1921 '((((class color grayscale) (min-colors 88) (background light))
1922 :foreground "grey50")
1923 (((class color grayscale) (min-colors 88) (background dark))
1924 :foreground "grey70")
1925 (((class color) (min-colors 8) (background light))
1926 :foreground "green")
1927 (((class color) (min-colors 8) (background dark))
1928 :foreground "yellow"))
1929 "Basic face for shadowed text."
1930 :group 'basic-faces
1931 :version "22.1")
1932
1933 (defface link
1934 '((((class color) (min-colors 88) (background light))
1935 :foreground "blue1" :underline t)
1936 (((class color) (background light))
1937 :foreground "blue" :underline t)
1938 (((class color) (min-colors 88) (background dark))
1939 :foreground "cyan1" :underline t)
1940 (((class color) (background dark))
1941 :foreground "cyan" :underline t)
1942 (t :inherit underline))
1943 "Basic face for unvisited links."
1944 :group 'basic-faces
1945 :version "22.1")
1946
1947 (defface link-visited
1948 '((default :inherit link)
1949 (((class color) (background light)) :foreground "magenta4")
1950 (((class color) (background dark)) :foreground "violet"))
1951 "Basic face for visited links."
1952 :group 'basic-faces
1953 :version "22.1")
1954
1955 (defface highlight
1956 '((((class color) (min-colors 88) (background light))
1957 :background "darkseagreen2")
1958 (((class color) (min-colors 88) (background dark))
1959 :background "darkolivegreen")
1960 (((class color) (min-colors 16) (background light))
1961 :background "darkseagreen2")
1962 (((class color) (min-colors 16) (background dark))
1963 :background "darkolivegreen")
1964 (((class color) (min-colors 8))
1965 :background "green" :foreground "black")
1966 (t :inverse-video t))
1967 "Basic face for highlighting."
1968 :group 'basic-faces)
1969
1970 (defface region
1971 '((((class color) (min-colors 88) (background dark))
1972 :background "blue3")
1973 (((class color) (min-colors 88) (background light))
1974 :background "lightgoldenrod2")
1975 (((class color) (min-colors 16) (background dark))
1976 :background "blue3")
1977 (((class color) (min-colors 16) (background light))
1978 :background "lightgoldenrod2")
1979 (((class color) (min-colors 8))
1980 :background "blue" :foreground "white")
1981 (((type tty) (class mono))
1982 :inverse-video t)
1983 (t :background "gray"))
1984 "Basic face for highlighting the region."
1985 :version "21.1"
1986 :group 'basic-faces)
1987
1988 (defface secondary-selection
1989 '((((class color) (min-colors 88) (background light))
1990 :background "yellow1")
1991 (((class color) (min-colors 88) (background dark))
1992 :background "SkyBlue4")
1993 (((class color) (min-colors 16) (background light))
1994 :background "yellow")
1995 (((class color) (min-colors 16) (background dark))
1996 :background "SkyBlue4")
1997 (((class color) (min-colors 8))
1998 :background "cyan" :foreground "black")
1999 (t :inverse-video t))
2000 "Basic face for displaying the secondary selection."
2001 :group 'basic-faces)
2002
2003 (defface trailing-whitespace
2004 '((((class color) (background light))
2005 :background "red1")
2006 (((class color) (background dark))
2007 :background "red1")
2008 (t :inverse-video t))
2009 "Basic face for highlighting trailing whitespace."
2010 :version "21.1"
2011 :group 'whitespace-faces ; like `show-trailing-whitespace'
2012 :group 'basic-faces)
2013
2014 (defface escape-glyph
2015 '((((background dark)) :foreground "cyan")
2016 ;; See the comment in minibuffer-prompt for
2017 ;; the reason not to use blue on MS-DOS.
2018 (((type pc)) :foreground "magenta")
2019 ;; red4 is too dark, but some say blue is too loud.
2020 ;; brown seems to work ok. -- rms.
2021 (t :foreground "brown"))
2022 "Face for characters displayed as sequences using `^' or `\\'."
2023 :group 'basic-faces
2024 :version "22.1")
2025
2026 (defface nobreak-space
2027 '((((class color) (min-colors 88)) :inherit escape-glyph :underline t)
2028 (((class color) (min-colors 8)) :background "magenta")
2029 (t :inverse-video t))
2030 "Face for displaying nobreak space."
2031 :group 'basic-faces
2032 :version "22.1")
2033
2034 (defgroup mode-line-faces nil
2035 "Faces used in the mode line."
2036 :group 'mode-line
2037 :group 'faces
2038 :version "22.1")
2039
2040 (defface mode-line
2041 '((((class color) (min-colors 88))
2042 :box (:line-width -1 :style released-button)
2043 :background "grey75" :foreground "black")
2044 (t
2045 :inverse-video t))
2046 "Basic mode line face for selected window."
2047 :version "21.1"
2048 :group 'mode-line-faces
2049 :group 'basic-faces)
2050
2051 (defface mode-line-inactive
2052 '((default
2053 :inherit mode-line)
2054 (((class color) (min-colors 88) (background light))
2055 :weight light
2056 :box (:line-width -1 :color "grey75" :style nil)
2057 :foreground "grey20" :background "grey90")
2058 (((class color) (min-colors 88) (background dark) )
2059 :weight light
2060 :box (:line-width -1 :color "grey40" :style nil)
2061 :foreground "grey80" :background "grey30"))
2062 "Basic mode line face for non-selected windows."
2063 :version "22.1"
2064 :group 'mode-line-faces
2065 :group 'basic-faces)
2066
2067 (defface mode-line-highlight
2068 '((((class color) (min-colors 88))
2069 :box (:line-width 2 :color "grey40" :style released-button))
2070 (t
2071 :inherit highlight))
2072 "Basic mode line face for highlighting."
2073 :version "22.1"
2074 :group 'mode-line-faces
2075 :group 'basic-faces)
2076
2077 (defface mode-line-buffer-id
2078 '((t (:weight bold)))
2079 "Face used for buffer identification parts of the mode line."
2080 :version "22.1"
2081 :group 'mode-line-faces
2082 :group 'basic-faces)
2083
2084 ;; Make `modeline' an alias for `mode-line', for compatibility.
2085 (put 'modeline 'face-alias 'mode-line)
2086 (put 'modeline-inactive 'face-alias 'mode-line-inactive)
2087 (put 'modeline-highlight 'face-alias 'mode-line-highlight)
2088 (put 'modeline-buffer-id 'face-alias 'mode-line-buffer-id)
2089
2090 (defface header-line
2091 '((default
2092 :inherit mode-line)
2093 (((type tty))
2094 ;; This used to be `:inverse-video t', but that doesn't look very
2095 ;; good when combined with inverse-video mode-lines and multiple
2096 ;; windows. Underlining looks better, and is more consistent with
2097 ;; the window-system face variants, which deemphasize the
2098 ;; header-line in relation to the mode-line face. If a terminal
2099 ;; can't underline, then the header-line will end up without any
2100 ;; highlighting; this may be too confusing in general, although it
2101 ;; happens to look good with the only current use of header-lines,
2102 ;; the info browser. XXX
2103 :inverse-video nil ;Override the value inherited from mode-line.
2104 :underline t)
2105 (((class color grayscale) (background light))
2106 :background "grey90" :foreground "grey20"
2107 :box nil)
2108 (((class color grayscale) (background dark))
2109 :background "grey20" :foreground "grey90"
2110 :box nil)
2111 (((class mono) (background light))
2112 :background "white" :foreground "black"
2113 :inverse-video nil
2114 :box nil
2115 :underline t)
2116 (((class mono) (background dark))
2117 :background "black" :foreground "white"
2118 :inverse-video nil
2119 :box nil
2120 :underline t))
2121 "Basic header-line face."
2122 :version "21.1"
2123 :group 'basic-faces)
2124
2125 (defface vertical-border
2126 '((((type tty)) :inherit mode-line-inactive))
2127 "Face used for vertical window dividers on ttys."
2128 :version "22.1"
2129 :group 'basic-faces)
2130
2131 (defface momentary
2132 '((t (:inherit mode-line)))
2133 "Face for momentarily displaying text in the current buffer."
2134 :version "22.1"
2135 :group 'basic-faces)
2136
2137 (defface minibuffer-prompt
2138 '((((background dark)) :foreground "cyan")
2139 ;; Don't use blue because many users of the MS-DOS port customize
2140 ;; their foreground color to be blue.
2141 (((type pc)) :foreground "magenta")
2142 (t :foreground "medium blue"))
2143 "Face for minibuffer prompts.
2144 By default, Emacs automatically adds this face to the value of
2145 `minibuffer-prompt-properties', which is a list of text properties
2146 used to display the prompt text."
2147 :version "22.1"
2148 :group 'basic-faces)
2149
2150 (setq minibuffer-prompt-properties
2151 (append minibuffer-prompt-properties (list 'face 'minibuffer-prompt)))
2152
2153 (defface fringe
2154 '((((class color) (background light))
2155 :background "grey95")
2156 (((class color) (background dark))
2157 :background "grey10")
2158 (t
2159 :background "gray"))
2160 "Basic face for the fringes to the left and right of windows under X."
2161 :version "21.1"
2162 :group 'frames
2163 :group 'basic-faces)
2164
2165 (defface scroll-bar '((t nil))
2166 "Basic face for the scroll bar colors under X."
2167 :version "21.1"
2168 :group 'frames
2169 :group 'basic-faces)
2170
2171 (defface border '((t nil))
2172 "Basic face for the frame border under X."
2173 :version "21.1"
2174 :group 'frames
2175 :group 'basic-faces)
2176
2177 (defface cursor '((t nil))
2178 "Basic face for the cursor color under X.
2179 Note: Other faces cannot inherit from the cursor face."
2180 :version "21.1"
2181 :group 'cursor
2182 :group 'basic-faces)
2183
2184 (put 'cursor 'face-no-inherit t)
2185
2186 (defface mouse '((t nil))
2187 "Basic face for the mouse color under X."
2188 :version "21.1"
2189 :group 'mouse
2190 :group 'basic-faces)
2191
2192 (defface tool-bar
2193 '((default
2194 :box (:line-width 1 :style released-button)
2195 :foreground "black")
2196 (((type x w32 mac) (class color))
2197 :background "grey75")
2198 (((type x) (class mono))
2199 :background "grey"))
2200 "Basic tool-bar face."
2201 :version "21.1"
2202 :group 'basic-faces)
2203
2204 (defface menu
2205 '((((type tty))
2206 :inverse-video t)
2207 (((type x-toolkit))
2208 )
2209 (t
2210 :inverse-video t))
2211 "Basic face for the font and colors of the menu bar and popup menus."
2212 :version "21.1"
2213 :group 'menu
2214 :group 'basic-faces)
2215
2216 \f
2217 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2218 ;;; Manipulating font names.
2219 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2220
2221 ;; This is here for compatibilty with Emacs 20.2. For example,
2222 ;; international/fontset.el uses x-resolve-font-name. The following
2223 ;; functions are not used in the face implementation itself.
2224
2225 (defvar x-font-regexp nil)
2226 (defvar x-font-regexp-head nil)
2227 (defvar x-font-regexp-weight nil)
2228 (defvar x-font-regexp-slant nil)
2229
2230 (defconst x-font-regexp-weight-subnum 1)
2231 (defconst x-font-regexp-slant-subnum 2)
2232 (defconst x-font-regexp-swidth-subnum 3)
2233 (defconst x-font-regexp-adstyle-subnum 4)
2234
2235 ;;; Regexps matching font names in "Host Portable Character Representation."
2236 ;;;
2237 (let ((- "[-?]")
2238 (foundry "[^-]+")
2239 (family "[^-]+")
2240 (weight "\\(bold\\|demibold\\|medium\\)") ; 1
2241 ; (weight\? "\\(\\*\\|bold\\|demibold\\|medium\\|\\)") ; 1
2242 (weight\? "\\([^-]*\\)") ; 1
2243 (slant "\\([ior]\\)") ; 2
2244 ; (slant\? "\\([ior?*]?\\)") ; 2
2245 (slant\? "\\([^-]?\\)") ; 2
2246 ; (swidth "\\(\\*\\|normal\\|semicondensed\\|\\)") ; 3
2247 (swidth "\\([^-]*\\)") ; 3
2248 ; (adstyle "\\(\\*\\|sans\\|\\)") ; 4
2249 (adstyle "\\([^-]*\\)") ; 4
2250 (pixelsize "[0-9]+")
2251 (pointsize "[0-9][0-9]+")
2252 (resx "[0-9][0-9]+")
2253 (resy "[0-9][0-9]+")
2254 (spacing "[cmp?*]")
2255 (avgwidth "[0-9]+")
2256 (registry "[^-]+")
2257 (encoding "[^-]+")
2258 )
2259 (setq x-font-regexp
2260 (concat "\\`\\*?[-?*]"
2261 foundry - family - weight\? - slant\? - swidth - adstyle -
2262 pixelsize - pointsize - resx - resy - spacing - avgwidth -
2263 registry - encoding "\\*?\\'"
2264 ))
2265 (setq x-font-regexp-head
2266 (concat "\\`[-?*]" foundry - family - weight\? - slant\?
2267 "\\([-*?]\\|\\'\\)"))
2268 (setq x-font-regexp-slant (concat - slant -))
2269 (setq x-font-regexp-weight (concat - weight -))
2270 nil)
2271
2272
2273 (defun x-resolve-font-name (pattern &optional face frame)
2274 "Return a font name matching PATTERN.
2275 All wildcards in PATTERN are instantiated.
2276 If PATTERN is nil, return the name of the frame's base font, which never
2277 contains wildcards.
2278 Given optional arguments FACE and FRAME, return a font which is
2279 also the same size as FACE on FRAME, or fail."
2280 (or (symbolp face)
2281 (setq face (face-name face)))
2282 (and (eq frame t)
2283 (setq frame nil))
2284 (if pattern
2285 ;; Note that x-list-fonts has code to handle a face with nil as its font.
2286 (let ((fonts (x-list-fonts pattern face frame 1)))
2287 (or fonts
2288 (if face
2289 (if (string-match "\\*" pattern)
2290 (if (null (face-font face))
2291 (error "No matching fonts are the same height as the frame default font")
2292 (error "No matching fonts are the same height as face `%s'" face))
2293 (if (null (face-font face))
2294 (error "Height of font `%s' doesn't match the frame default font"
2295 pattern)
2296 (error "Height of font `%s' doesn't match face `%s'"
2297 pattern face)))
2298 (error "No fonts match `%s'" pattern)))
2299 (car fonts))
2300 (cdr (assq 'font (frame-parameters (selected-frame))))))
2301
2302
2303 (defun x-frob-font-weight (font which)
2304 (let ((case-fold-search t))
2305 (cond ((string-match x-font-regexp font)
2306 (concat (substring font 0
2307 (match-beginning x-font-regexp-weight-subnum))
2308 which
2309 (substring font (match-end x-font-regexp-weight-subnum)
2310 (match-beginning x-font-regexp-adstyle-subnum))
2311 ;; Replace the ADD_STYLE_NAME field with *
2312 ;; because the info in it may not be the same
2313 ;; for related fonts.
2314 "*"
2315 (substring font (match-end x-font-regexp-adstyle-subnum))))
2316 ((string-match x-font-regexp-head font)
2317 (concat (substring font 0 (match-beginning 1)) which
2318 (substring font (match-end 1))))
2319 ((string-match x-font-regexp-weight font)
2320 (concat (substring font 0 (match-beginning 1)) which
2321 (substring font (match-end 1)))))))
2322 (make-obsolete 'x-frob-font-weight 'make-face-... "21.1")
2323
2324 (defun x-frob-font-slant (font which)
2325 (let ((case-fold-search t))
2326 (cond ((string-match x-font-regexp font)
2327 (concat (substring font 0
2328 (match-beginning x-font-regexp-slant-subnum))
2329 which
2330 (substring font (match-end x-font-regexp-slant-subnum)
2331 (match-beginning x-font-regexp-adstyle-subnum))
2332 ;; Replace the ADD_STYLE_NAME field with *
2333 ;; because the info in it may not be the same
2334 ;; for related fonts.
2335 "*"
2336 (substring font (match-end x-font-regexp-adstyle-subnum))))
2337 ((string-match x-font-regexp-head font)
2338 (concat (substring font 0 (match-beginning 2)) which
2339 (substring font (match-end 2))))
2340 ((string-match x-font-regexp-slant font)
2341 (concat (substring font 0 (match-beginning 1)) which
2342 (substring font (match-end 1)))))))
2343 (make-obsolete 'x-frob-font-slant 'make-face-... "21.1")
2344
2345 ;; These aliases are here so that we don't get warnings about obsolete
2346 ;; functions from the byte compiler.
2347 (defalias 'internal-frob-font-weight 'x-frob-font-weight)
2348 (defalias 'internal-frob-font-slant 'x-frob-font-slant)
2349
2350 (defun x-make-font-bold (font)
2351 "Given an X font specification, make a bold version of it.
2352 If that can't be done, return nil."
2353 (internal-frob-font-weight font "bold"))
2354 (make-obsolete 'x-make-font-bold 'make-face-bold "21.1")
2355
2356 (defun x-make-font-demibold (font)
2357 "Given an X font specification, make a demibold version of it.
2358 If that can't be done, return nil."
2359 (internal-frob-font-weight font "demibold"))
2360 (make-obsolete 'x-make-font-demibold 'make-face-bold "21.1")
2361
2362 (defun x-make-font-unbold (font)
2363 "Given an X font specification, make a non-bold version of it.
2364 If that can't be done, return nil."
2365 (internal-frob-font-weight font "medium"))
2366 (make-obsolete 'x-make-font-unbold 'make-face-unbold "21.1")
2367
2368 (defun x-make-font-italic (font)
2369 "Given an X font specification, make an italic version of it.
2370 If that can't be done, return nil."
2371 (internal-frob-font-slant font "i"))
2372 (make-obsolete 'x-make-font-italic 'make-face-italic "21.1")
2373
2374 (defun x-make-font-oblique (font) ; you say tomayto...
2375 "Given an X font specification, make an oblique version of it.
2376 If that can't be done, return nil."
2377 (internal-frob-font-slant font "o"))
2378 (make-obsolete 'x-make-font-oblique 'make-face-italic "21.1")
2379
2380 (defun x-make-font-unitalic (font)
2381 "Given an X font specification, make a non-italic version of it.
2382 If that can't be done, return nil."
2383 (internal-frob-font-slant font "r"))
2384 (make-obsolete 'x-make-font-unitalic 'make-face-unitalic "21.1")
2385
2386 (defun x-make-font-bold-italic (font)
2387 "Given an X font specification, make a bold and italic version of it.
2388 If that can't be done, return nil."
2389 (and (setq font (internal-frob-font-weight font "bold"))
2390 (internal-frob-font-slant font "i")))
2391 (make-obsolete 'x-make-font-bold-italic 'make-face-bold-italic "21.1")
2392
2393 (provide 'faces)
2394
2395 ;; arch-tag: 19a4759f-2963-445f-b004-425b9aadd7d6
2396 ;;; faces.el ends here