* alloc.c (inhibit_garbage_collection): Set gc_cons_threshold to max value.
[emacs.git] / lisp / cus-face.el
blob90f21f321497f1a5d8ae5e6c19f266c17a7aab7d
1 ;;; cus-face.el --- customization support for faces
2 ;;
3 ;; Copyright (C) 1996-1997, 1999-2011 Free Software Foundation, Inc.
4 ;;
5 ;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
6 ;; Keywords: help, faces
7 ;; Package: emacs
9 ;; This file is part of GNU Emacs.
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 3 of the License, or
14 ;; (at your option) any later version.
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.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
24 ;;; Commentary:
26 ;; See `custom.el'.
28 ;;; Code:
30 (defalias 'custom-facep 'facep)
32 ;;; Declaring a face.
34 (defun custom-declare-face (face spec doc &rest args)
35 "Like `defface', but FACE is evaluated as a normal argument."
36 (unless (get face 'face-defface-spec)
37 (unless (facep face)
38 ;; If the user has already created the face, respect that.
39 (let ((value (or (get face 'saved-face) spec))
40 (have-window-system (memq initial-window-system '(x w32))))
41 ;; Create global face.
42 (make-empty-face face)
43 ;; Create frame-local faces
44 (dolist (frame (frame-list))
45 (face-spec-set-2 face frame value)
46 (when (memq (window-system frame) '(x w32 ns))
47 (setq have-window-system t)))
48 ;; When making a face after frames already exist
49 (if have-window-system
50 (make-face-x-resource-internal face))))
51 ;; Don't record SPEC until we see it causes no errors.
52 (put face 'face-defface-spec (purecopy spec))
53 (push (cons 'defface face) current-load-list)
54 (when (and doc (null (face-documentation face)))
55 (set-face-documentation face (purecopy doc)))
56 (custom-handle-all-keywords face args 'custom-face)
57 (run-hooks 'custom-define-hook)
58 ;; If the face has an existing theme setting, recalculate it.
59 (if (get face 'theme-face)
60 (custom-theme-recalc-face face)))
61 face)
63 ;;; Face attributes.
65 (defconst custom-face-attributes
66 '((:family
67 (string :tag "Font Family"
68 :help-echo "Font family or fontset alias name."))
70 (:foundry
71 (string :tag "Font Foundry"
72 :help-echo "Font foundry name."))
74 (:width
75 (choice :tag "Width"
76 :help-echo "Font width."
77 :value normal ; default
78 (const :tag "compressed" condensed)
79 (const :tag "condensed" condensed)
80 (const :tag "demiexpanded" semi-expanded)
81 (const :tag "expanded" expanded)
82 (const :tag "extracondensed" extra-condensed)
83 (const :tag "extraexpanded" extra-expanded)
84 (const :tag "medium" normal)
85 (const :tag "narrow" condensed)
86 (const :tag "normal" normal)
87 (const :tag "regular" normal)
88 (const :tag "semicondensed" semi-condensed)
89 (const :tag "semiexpanded" semi-expanded)
90 (const :tag "ultracondensed" ultra-condensed)
91 (const :tag "ultraexpanded" ultra-expanded)
92 (const :tag "wide" extra-expanded)))
94 (:height
95 (choice :tag "Height"
96 :help-echo "Face's font height."
97 :value 1.0 ; default
98 (integer :tag "Height in 1/10 pt")
99 (number :tag "Scale" 1.0)))
101 (:weight
102 (choice :tag "Weight"
103 :help-echo "Font weight."
104 :value normal ; default
105 (const :tag "black" ultra-bold)
106 (const :tag "bold" bold)
107 (const :tag "book" semi-light)
108 (const :tag "demibold" semi-bold)
109 (const :tag "extralight" extra-light)
110 (const :tag "extrabold" extra-bold)
111 (const :tag "heavy" extra-bold)
112 (const :tag "light" light)
113 (const :tag "medium" normal)
114 (const :tag "normal" normal)
115 (const :tag "regular" normal)
116 (const :tag "semibold" semi-bold)
117 (const :tag "semilight" semi-light)
118 (const :tag "ultralight" ultra-light)
119 (const :tag "ultrabold" ultra-bold)
120 (const :tag "thin" thin)))
122 (:slant
123 (choice :tag "Slant"
124 :help-echo "Font slant."
125 :value normal ; default
126 (const :tag "italic" italic)
127 (const :tag "oblique" oblique)
128 (const :tag "normal" normal)
129 (const :tag "roman" roman)))
131 (:underline
132 (choice :tag "Underline"
133 :help-echo "Control text underlining."
134 (const :tag "Off" nil)
135 (const :tag "On" t)
136 (color :tag "Colored")))
138 (:overline
139 (choice :tag "Overline"
140 :help-echo "Control text overlining."
141 (const :tag "Off" nil)
142 (const :tag "On" t)
143 (color :tag "Colored")))
145 (:strike-through
146 (choice :tag "Strike-through"
147 :help-echo "Control text strike-through."
148 (const :tag "Off" nil)
149 (const :tag "On" t)
150 (color :tag "Colored")))
152 (:box
153 ;; Fixme: this can probably be done better.
154 (choice :tag "Box around text"
155 :help-echo "Control box around text."
156 (const :tag "Off" nil)
157 (list :tag "Box"
158 :value (:line-width 2 :color "grey75" :style released-button)
159 (const :format "" :value :line-width)
160 (integer :tag "Width")
161 (const :format "" :value :color)
162 (choice :tag "Color" (const :tag "*" nil) color)
163 (const :format "" :value :style)
164 (choice :tag "Style"
165 (const :tag "Raised" released-button)
166 (const :tag "Sunken" pressed-button)
167 (const :tag "None" nil))))
168 ;; filter to make value suitable for customize
169 (lambda (real-value)
170 (and real-value
171 (let ((lwidth
172 (or (and (consp real-value)
173 (plist-get real-value :line-width))
174 (and (integerp real-value) real-value)
176 (color
177 (or (and (consp real-value) (plist-get real-value :color))
178 (and (stringp real-value) real-value)
179 nil))
180 (style
181 (and (consp real-value) (plist-get real-value :style))))
182 (list :line-width lwidth :color color :style style))))
183 ;; filter to make customized-value suitable for storing
184 (lambda (cus-value)
185 (and cus-value
186 (let ((lwidth (plist-get cus-value :line-width))
187 (color (plist-get cus-value :color))
188 (style (plist-get cus-value :style)))
189 (cond ((and (null color) (null style))
190 lwidth)
191 ((and (null lwidth) (null style))
192 ;; actually can't happen, because LWIDTH is always an int
193 color)
195 ;; Keep as a plist, but remove null entries
196 (nconc (and lwidth `(:line-width ,lwidth))
197 (and color `(:color ,color))
198 (and style `(:style ,style)))))))))
200 (:inverse-video
201 (choice :tag "Inverse-video"
202 :help-echo "Control whether text should be in inverse-video."
203 (const :tag "Off" nil)
204 (const :tag "On" t)))
206 (:foreground
207 (color :tag "Foreground"
208 :help-echo "Set foreground color (name or #RRGGBB hex spec)."))
210 (:background
211 (color :tag "Background"
212 :help-echo "Set background color (name or #RRGGBB hex spec)."))
214 (:stipple
215 (choice :tag "Stipple"
216 :help-echo "Background bit-mask"
217 (const :tag "None" nil)
218 (file :tag "File"
219 :help-echo "Name of bitmap file."
220 :must-match t)))
222 (:inherit
223 (repeat :tag "Inherit"
224 :help-echo "List of faces to inherit attributes from."
225 (face :Tag "Face" default))
226 ;; filter to make value suitable for customize
227 (lambda (real-value)
228 (cond ((or (null real-value) (eq real-value 'unspecified))
229 nil)
230 ((symbolp real-value)
231 (list real-value))
233 real-value)))
234 ;; filter to make customized-value suitable for storing
235 (lambda (cus-value)
236 (if (and (consp cus-value) (null (cdr cus-value)))
237 (car cus-value)
238 cus-value))))
240 "Alist of face attributes.
242 The elements are of the form (KEY TYPE PRE-FILTER POST-FILTER),
243 where KEY is the name of the attribute, TYPE is a widget type for
244 editing the attribute, PRE-FILTER is a function to make the attribute's
245 value suitable for the customization widget, and POST-FILTER is a
246 function to make the customized value suitable for storing. PRE-FILTER
247 and POST-FILTER are optional.
249 The PRE-FILTER should take a single argument, the attribute value as
250 stored, and should return a value for customization (using the
251 customization type TYPE).
253 The POST-FILTER should also take a single argument, the value after
254 being customized, and should return a value suitable for setting the
255 given face attribute.")
257 (defun custom-face-attributes-get (face frame)
258 "For FACE on FRAME, return an alternating list describing its attributes.
259 The list has the form (KEYWORD VALUE KEYWORD VALUE...).
260 Each keyword should be listed in `custom-face-attributes'.
262 If FRAME is nil, use the global defaults for FACE."
263 (let ((attrs custom-face-attributes)
264 plist)
265 (while attrs
266 (let* ((attribute (car (car attrs)))
267 (value (face-attribute face attribute frame)))
268 (setq attrs (cdr attrs))
269 (unless (or (eq value 'unspecified)
270 (and (null value) (memq attribute '(:inherit))))
271 (setq plist (cons attribute (cons value plist))))))
272 plist))
274 ;;; Initializing.
276 (defun custom-set-faces (&rest args)
277 "Initialize faces according to user preferences.
278 This associates the settings with the `user' theme.
279 The arguments should be a list where each entry has the form:
281 (FACE SPEC [NOW [COMMENT]])
283 SPEC is stored as the saved value for FACE, as well as the value for the
284 `user' theme. The `user' theme is one of the default themes known to Emacs.
285 See `custom-known-themes' for more information on the known themes.
286 See `custom-theme-set-faces' for more information on the interplay
287 between themes and faces.
288 See `defface' for the format of SPEC.
290 If NOW is present and non-nil, FACE is created now, according to SPEC.
291 COMMENT is a string comment about FACE."
292 (apply 'custom-theme-set-faces 'user args))
294 (defun custom-theme-set-faces (theme &rest args)
295 "Initialize faces for theme THEME.
296 The arguments should be a list where each entry has the form:
298 (FACE SPEC [NOW [COMMENT]])
300 SPEC is stored as the saved value for FACE, as well as the value for the
301 `user' theme. The `user' theme is one of the default themes known to Emacs.
302 See `custom-known-themes' for more information on the known themes.
303 See `custom-theme-set-faces' for more information on the interplay
304 between themes and faces.
305 See `defface' for the format of SPEC.
307 If NOW is present and non-nil, FACE is created now, according to SPEC.
308 COMMENT is a string comment about FACE.
310 Several properties of THEME and FACE are used in the process:
312 If THEME property `theme-immediate' is non-nil, this is equivalent of
313 providing the NOW argument to all faces in the argument list: FACE is
314 created now. The only difference is FACE property `force-face': if NOW
315 is non-nil, FACE property `force-face' is set to the symbol `rogue', else
316 if THEME property `theme-immediate' is non-nil, FACE property `force-face'
317 is set to the symbol `immediate'.
319 SPEC itself is saved in FACE property `saved-face' and it is stored in
320 FACE's list property `theme-face' \(using `custom-push-theme')."
321 (custom-check-theme theme)
322 (let ((immediate (get theme 'theme-immediate)))
323 (dolist (entry args)
324 (unless (listp entry)
325 (error "Incompatible Custom theme spec"))
326 (let ((face (car entry))
327 (spec (nth 1 entry)))
328 ;; If FACE is actually an alias, customize the face it
329 ;; is aliased to.
330 (if (get face 'face-alias)
331 (setq face (get face 'face-alias)))
332 (if custom--inhibit-theme-enable
333 ;; Just update theme settings.
334 (custom-push-theme 'theme-face face theme 'set spec)
335 ;; Update theme settings and set the face spec.
336 (let ((now (nth 2 entry))
337 (comment (nth 3 entry))
338 (oldspec (get face 'theme-face)))
339 (when (not (and oldspec (eq 'user (caar oldspec))))
340 (put face 'saved-face spec)
341 (put face 'saved-face-comment comment))
342 ;; Do this AFTER checking the `theme-face' property.
343 (custom-push-theme 'theme-face face theme 'set spec)
344 (when (or now immediate)
345 (put face 'force-face (if now 'rogue 'immediate)))
346 (when (or now immediate (facep face))
347 (unless (facep face)
348 (make-empty-face face))
349 (put face 'face-comment comment)
350 (put face 'face-override-spec nil)
351 (face-spec-set face spec t))))))))
353 ;; XEmacs compatibility function. In XEmacs, when you reset a Custom
354 ;; Theme, you have to specify the theme to reset it to. We just apply
355 ;; the next theme.
356 (defun custom-theme-reset-faces (theme &rest args)
357 "Reset the specs in THEME of some faces to their specs in other themes.
358 Each of the arguments ARGS has this form:
360 (FACE IGNORED)
362 This means reset FACE. The argument IGNORED is ignored."
363 (custom-check-theme theme)
364 (dolist (arg args)
365 (custom-push-theme 'theme-face (car arg) theme 'reset)))
367 (defun custom-reset-faces (&rest args)
368 "Reset the specs of some faces to their specs in specified themes.
369 This creates settings in the `user' theme.
371 Each of the arguments ARGS has this form:
373 (FACE FROM-THEME)
375 This means reset FACE to its value in FROM-THEME."
376 (apply 'custom-theme-reset-faces 'user args))
378 ;;; The End.
380 (provide 'cus-face)
382 ;;; cus-face.el ends here