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465fceed ER |
1 | ;;; faces.el --- Lisp interface to the c "face" structure |
2 | ||
19ae9866 | 3 | ;; Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc. |
465fceed ER |
4 | |
5 | ;; This file is part of GNU Emacs. | |
6 | ||
7 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
8 | ;; it under the terms of the GNU General Public License as published by | |
9 | ;; the Free Software Foundation; either version 2, or (at your option) | |
10 | ;; any later version. | |
11 | ||
12 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
13 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | ;; GNU General Public License for more details. | |
16 | ||
17 | ;; You should have received a copy of the GNU General Public License | |
18 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
19 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | ||
21 | ;;; Commentary: | |
22 | ||
23 | ;; Mostly derived from Lucid. | |
24 | ||
25 | ;;; Code: | |
26 | ||
39b3b754 RS |
27 | (eval-when-compile |
28 | ;; These used to be defsubsts, now they're subrs. Avoid losing if we're | |
29 | ;; being compiled with an old Emacs that still has defsubrs in it. | |
30 | (put 'face-name 'byte-optimizer nil) | |
31 | (put 'face-id 'byte-optimizer nil) | |
32 | (put 'face-font 'byte-optimizer nil) | |
33 | (put 'face-foreground 'byte-optimizer nil) | |
34 | (put 'face-background 'byte-optimizer nil) | |
35 | (put 'face-stipple 'byte-optimizer nil) | |
36 | (put 'face-underline-p 'byte-optimizer nil) | |
37 | (put 'set-face-font 'byte-optimizer nil) | |
38 | (put 'set-face-foreground 'byte-optimizer nil) | |
39 | (put 'set-face-background 'byte-optimizer nil) | |
40 | (put 'set-stipple 'byte-optimizer nil) | |
41 | (put 'set-face-underline-p 'byte-optimizer nil)) | |
bdda3754 JB |
42 | \f |
43 | ;;;; Functions for manipulating face vectors. | |
44 | ||
45 | ;;; A face vector is a vector of the form: | |
72418504 | 46 | ;;; [face NAME ID FONT FOREGROUND BACKGROUND STIPPLE UNDERLINE] |
bdda3754 JB |
47 | |
48 | ;;; Type checkers. | |
465fceed ER |
49 | (defsubst internal-facep (x) |
50 | (and (vectorp x) (= (length x) 8) (eq (aref x 0) 'face))) | |
51 | ||
52 | (defmacro internal-check-face (face) | |
53 | (` (while (not (internal-facep (, face))) | |
54 | (setq (, face) (signal 'wrong-type-argument (list 'internal-facep (, face))))))) | |
55 | ||
bdda3754 | 56 | ;;; Accessors. |
feaad827 | 57 | (defun face-name (face) |
465fceed ER |
58 | "Return the name of face FACE." |
59 | (aref (internal-get-face face) 1)) | |
60 | ||
feaad827 | 61 | (defun face-id (face) |
465fceed ER |
62 | "Return the internal ID number of face FACE." |
63 | (aref (internal-get-face face) 2)) | |
64 | ||
feaad827 | 65 | (defun face-font (face &optional frame) |
465fceed ER |
66 | "Return the font name of face FACE, or nil if it is unspecified. |
67 | If the optional argument FRAME is given, report on face FACE in that frame. | |
f3f31ccf RS |
68 | If FRAME is t, report on the defaults for face FACE (for new frames). |
69 | The font default for a face is either nil, or a list | |
70 | of the form (bold), (italic) or (bold italic). | |
71 | If FRAME is omitted or nil, use the selected frame." | |
465fceed ER |
72 | (aref (internal-get-face face frame) 3)) |
73 | ||
feaad827 | 74 | (defun face-foreground (face &optional frame) |
465fceed ER |
75 | "Return the foreground color name of face FACE, or nil if unspecified. |
76 | If the optional argument FRAME is given, report on face FACE in that frame. | |
f3f31ccf RS |
77 | If FRAME is t, report on the defaults for face FACE (for new frames). |
78 | If FRAME is omitted or nil, use the selected frame." | |
465fceed ER |
79 | (aref (internal-get-face face frame) 4)) |
80 | ||
feaad827 | 81 | (defun face-background (face &optional frame) |
465fceed ER |
82 | "Return the background color name of face FACE, or nil if unspecified. |
83 | If the optional argument FRAME is given, report on face FACE in that frame. | |
f3f31ccf RS |
84 | If FRAME is t, report on the defaults for face FACE (for new frames). |
85 | If FRAME is omitted or nil, use the selected frame." | |
465fceed ER |
86 | (aref (internal-get-face face frame) 5)) |
87 | ||
feaad827 | 88 | (defun face-stipple (face &optional frame) |
72418504 RS |
89 | "Return the stipple pixmap name of face FACE, or nil if unspecified. |
90 | If the optional argument FRAME is given, report on face FACE in that frame. | |
91 | If FRAME is t, report on the defaults for face FACE (for new frames). | |
92 | If FRAME is omitted or nil, use the selected frame." | |
93 | (aref (internal-get-face face frame) 6)) | |
94 | ||
95 | (defalias 'face-background-pixmap 'face-stipple) | |
465fceed | 96 | |
feaad827 | 97 | (defun face-underline-p (face &optional frame) |
465fceed ER |
98 | "Return t if face FACE is underlined. |
99 | If the optional argument FRAME is given, report on face FACE in that frame. | |
f3f31ccf RS |
100 | If FRAME is t, report on the defaults for face FACE (for new frames). |
101 | If FRAME is omitted or nil, use the selected frame." | |
465fceed ER |
102 | (aref (internal-get-face face frame) 7)) |
103 | ||
bdda3754 JB |
104 | \f |
105 | ;;; Mutators. | |
465fceed | 106 | |
feaad827 | 107 | (defun set-face-font (face font &optional frame) |
465fceed ER |
108 | "Change the font of face FACE to FONT (a string). |
109 | If the optional FRAME argument is provided, change only | |
110 | in that frame; otherwise change each frame." | |
111 | (interactive (internal-face-interactive "font")) | |
10d89673 JB |
112 | (if (stringp font) (setq font (x-resolve-font-name font face frame))) |
113 | (internal-set-face-1 face 'font font 3 frame)) | |
465fceed | 114 | |
feaad827 | 115 | (defun set-face-foreground (face color &optional frame) |
465fceed ER |
116 | "Change the foreground color of face FACE to COLOR (a string). |
117 | If the optional FRAME argument is provided, change only | |
118 | in that frame; otherwise change each frame." | |
119 | (interactive (internal-face-interactive "foreground")) | |
f0138172 | 120 | (internal-set-face-1 face 'foreground color 4 frame)) |
465fceed | 121 | |
feaad827 | 122 | (defun set-face-background (face color &optional frame) |
465fceed ER |
123 | "Change the background color of face FACE to COLOR (a string). |
124 | If the optional FRAME argument is provided, change only | |
125 | in that frame; otherwise change each frame." | |
126 | (interactive (internal-face-interactive "background")) | |
ee09252a RS |
127 | ;; For a specific frame, use gray stipple instead of gray color |
128 | ;; if the display does not support a gray color. | |
129 | (if (and frame (not (eq frame t)) | |
130 | (member color '("gray" "gray1" "gray3")) | |
0fd8a324 RS |
131 | (not (x-display-color-p frame)) |
132 | (not (x-display-grayscale-p frame))) | |
ee09252a RS |
133 | (set-face-stipple face color frame) |
134 | (internal-set-face-1 face 'background color 5 frame))) | |
465fceed | 135 | |
feaad827 | 136 | (defun set-face-stipple (face name &optional frame) |
72418504 RS |
137 | "Change the stipple pixmap of face FACE to PIXMAP. |
138 | PIXMAP should be a string, the name of a file of pixmap data. | |
139 | The directories listed in the `x-bitmap-file-path' variable are searched. | |
465fceed | 140 | |
72418504 RS |
141 | Alternatively, PIXMAP may be a list of the form (WIDTH HEIGHT DATA) |
142 | where WIDTH and HEIGHT are the size in pixels, | |
143 | and DATA is a string, containing the raw bits of the bitmap. | |
465fceed | 144 | |
72418504 RS |
145 | If the optional FRAME argument is provided, change only |
146 | in that frame; otherwise change each frame." | |
147 | (interactive (internal-face-interactive "stipple")) | |
148 | (internal-set-face-1 face 'background-pixmap name 6 frame)) | |
149 | ||
150 | (defalias 'set-face-background-pixmap 'set-face-stipple) | |
465fceed | 151 | |
feaad827 | 152 | (defun set-face-underline-p (face underline-p &optional frame) |
465fceed ER |
153 | "Specify whether face FACE is underlined. (Yes if UNDERLINE-P is non-nil.) |
154 | If the optional FRAME argument is provided, change only | |
155 | in that frame; otherwise change each frame." | |
156 | (interactive (internal-face-interactive "underline-p" "underlined")) | |
f0138172 | 157 | (internal-set-face-1 face 'underline underline-p 7 frame)) |
1c0a8710 RS |
158 | \f |
159 | (defun modify-face (face foreground background bold-p italic-p underline-p) | |
160 | "Change the display attributes for face FACE. | |
161 | FOREGROUND and BACKGROUND should be color strings. (Default color if nil.) | |
162 | BOLD-P, ITALIC-P, and UNDERLINE-P specify whether the face should be set bold, | |
163 | in italic, and underlined, respectively. (Yes if non-nil.) | |
164 | If called interactively, prompts for a face and face attributes." | |
165 | (interactive | |
166 | (let* ((completion-ignore-case t) | |
167 | (face (symbol-name (read-face-name "Face: "))) | |
168 | (foreground (completing-read | |
169 | (format "Face %s set foreground (default %s): " face | |
170 | (downcase (or (face-foreground (intern face)) | |
171 | "foreground"))) | |
172 | (mapcar 'list (x-defined-colors)))) | |
173 | (background (completing-read | |
174 | (format "Face %s set background (default %s): " face | |
175 | (downcase (or (face-background (intern face)) | |
176 | "background"))) | |
177 | (mapcar 'list (x-defined-colors)))) | |
178 | (bold-p (y-or-n-p (concat "Face " face ": set bold "))) | |
179 | (italic-p (y-or-n-p (concat "Face " face ": set italic "))) | |
180 | (underline-p (y-or-n-p (concat "Face " face ": set underline ")))) | |
181 | (if (string-equal background "") (setq background nil)) | |
182 | (if (string-equal foreground "") (setq foreground nil)) | |
183 | (message "Face %s: %s" face | |
184 | (mapconcat 'identity | |
185 | (delq nil | |
186 | (list (and foreground (concat (downcase foreground) " foreground")) | |
187 | (and background (concat (downcase background) " background")) | |
188 | (and bold-p "bold") (and italic-p "italic") | |
189 | (and underline-p "underline"))) ", ")) | |
190 | (list (intern face) foreground background bold-p italic-p underline-p))) | |
191 | (condition-case nil (set-face-foreground face foreground) (error nil)) | |
192 | (condition-case nil (set-face-background face background) (error nil)) | |
193 | (funcall (if bold-p 'make-face-bold 'make-face-unbold) face nil t) | |
194 | (funcall (if italic-p 'make-face-italic 'make-face-unitalic) face nil t) | |
195 | (set-face-underline-p face underline-p) | |
196 | (and (interactive-p) (redraw-display))) | |
bdda3754 JB |
197 | \f |
198 | ;;;; Associating face names (symbols) with their face vectors. | |
199 | ||
66a5c2c6 JB |
200 | (defvar global-face-data nil |
201 | "Internal data for face support functions. Not for external use. | |
202 | This is an alist associating face names with the default values for | |
203 | their parameters. Newly created frames get their data from here.") | |
204 | ||
bdda3754 JB |
205 | (defun face-list () |
206 | "Returns a list of all defined face names." | |
207 | (mapcar 'car global-face-data)) | |
208 | ||
209 | (defun internal-find-face (name &optional frame) | |
210 | "Retrieve the face named NAME. Return nil if there is no such face. | |
211 | If the optional argument FRAME is given, this gets the face NAME for | |
212 | that frame; otherwise, it uses the selected frame. | |
213 | If FRAME is the symbol t, then the global, non-frame face is returned. | |
214 | If NAME is already a face, it is simply returned." | |
215 | (if (and (eq frame t) (not (symbolp name))) | |
216 | (setq name (face-name name))) | |
217 | (if (symbolp name) | |
218 | (cdr (assq name | |
219 | (if (eq frame t) | |
220 | global-face-data | |
221 | (frame-face-alist (or frame (selected-frame)))))) | |
222 | (internal-check-face name) | |
223 | name)) | |
224 | ||
225 | (defun internal-get-face (name &optional frame) | |
226 | "Retrieve the face named NAME; error if there is none. | |
227 | If the optional argument FRAME is given, this gets the face NAME for | |
228 | that frame; otherwise, it uses the selected frame. | |
229 | If FRAME is the symbol t, then the global, non-frame face is returned. | |
230 | If NAME is already a face, it is simply returned." | |
231 | (or (internal-find-face name frame) | |
232 | (internal-check-face name))) | |
233 | ||
234 | ||
235 | (defun internal-set-face-1 (face name value index frame) | |
236 | (let ((inhibit-quit t)) | |
237 | (if (null frame) | |
238 | (let ((frames (frame-list))) | |
239 | (while frames | |
240 | (internal-set-face-1 (face-name face) name value index (car frames)) | |
241 | (setq frames (cdr frames))) | |
242 | (aset (internal-get-face (if (symbolp face) face (face-name face)) t) | |
243 | index value) | |
244 | value) | |
245 | (or (eq frame t) | |
246 | (set-face-attribute-internal (face-id face) name value frame)) | |
247 | (aset (internal-get-face face frame) index value)))) | |
248 | ||
249 | ||
250 | (defun read-face-name (prompt) | |
251 | (let (face) | |
252 | (while (= (length face) 0) | |
253 | (setq face (completing-read prompt | |
254 | (mapcar '(lambda (x) (list (symbol-name x))) | |
255 | (face-list)) | |
256 | nil t))) | |
257 | (intern face))) | |
258 | ||
259 | (defun internal-face-interactive (what &optional bool) | |
260 | (let* ((fn (intern (concat "face-" what))) | |
261 | (prompt (concat "Set " what " of face")) | |
262 | (face (read-face-name (concat prompt ": "))) | |
263 | (default (if (fboundp fn) | |
264 | (or (funcall fn face (selected-frame)) | |
265 | (funcall fn 'default (selected-frame))))) | |
266 | (value (if bool | |
267 | (y-or-n-p (concat "Should face " (symbol-name face) | |
268 | " be " bool "? ")) | |
269 | (read-string (concat prompt " " (symbol-name face) " to: ") | |
270 | default)))) | |
271 | (list face (if (equal value "") nil value)))) | |
272 | ||
273 | ||
465fceed ER |
274 | |
275 | (defun make-face (name) | |
276 | "Define a new FACE on all frames. | |
277 | You can modify the font, color, etc of this face with the set-face- functions. | |
278 | If the face already exists, it is unmodified." | |
19fac299 | 279 | (interactive "SMake face: ") |
465fceed ER |
280 | (or (internal-find-face name) |
281 | (let ((face (make-vector 8 nil))) | |
282 | (aset face 0 'face) | |
283 | (aset face 1 name) | |
284 | (let* ((frames (frame-list)) | |
285 | (inhibit-quit t) | |
286 | (id (internal-next-face-id))) | |
287 | (make-face-internal id) | |
288 | (aset face 2 id) | |
289 | (while frames | |
290 | (set-frame-face-alist (car frames) | |
291 | (cons (cons name (copy-sequence face)) | |
292 | (frame-face-alist (car frames)))) | |
293 | (setq frames (cdr frames))) | |
294 | (setq global-face-data (cons (cons name face) global-face-data))) | |
295 | ;; when making a face after frames already exist | |
296 | (if (eq window-system 'x) | |
297 | (make-face-x-resource-internal face)) | |
33af44e8 BG |
298 | ;; add to menu |
299 | (if (fboundp 'facemenu-add-new-face) | |
300 | (facemenu-add-new-face name)) | |
7ee29ed8 RS |
301 | face)) |
302 | name) | |
465fceed ER |
303 | |
304 | ;; Fill in a face by default based on X resources, for all existing frames. | |
305 | ;; This has to be done when a new face is made. | |
306 | (defun make-face-x-resource-internal (face &optional frame set-anyway) | |
307 | (cond ((null frame) | |
308 | (let ((frames (frame-list))) | |
309 | (while frames | |
586ab698 RS |
310 | (if (eq (framep (car frames)) 'x) |
311 | (make-face-x-resource-internal (face-name face) | |
312 | (car frames) set-anyway)) | |
465fceed ER |
313 | (setq frames (cdr frames))))) |
314 | (t | |
315 | (setq face (internal-get-face (face-name face) frame)) | |
316 | ;; | |
317 | ;; These are things like "attributeForeground" instead of simply | |
318 | ;; "foreground" because people tend to do things like "*foreground", | |
319 | ;; which would cause all faces to be fully qualified, making faces | |
320 | ;; inherit attributes in a non-useful way. So we've made them slightly | |
321 | ;; less obvious to specify in order to make them work correctly in | |
322 | ;; more random environments. | |
323 | ;; | |
324 | ;; I think these should be called "face.faceForeground" instead of | |
325 | ;; "face.attributeForeground", but they're the way they are for | |
326 | ;; hysterical reasons. | |
327 | ;; | |
328 | (let* ((name (symbol-name (face-name face))) | |
329 | (fn (or (x-get-resource (concat name ".attributeFont") | |
330 | "Face.AttributeFont") | |
331 | (and set-anyway (face-font face)))) | |
332 | (fg (or (x-get-resource (concat name ".attributeForeground") | |
333 | "Face.AttributeForeground") | |
334 | (and set-anyway (face-foreground face)))) | |
335 | (bg (or (x-get-resource (concat name ".attributeBackground") | |
336 | "Face.AttributeBackground") | |
337 | (and set-anyway (face-background face)))) | |
72418504 RS |
338 | (bgp (or (x-get-resource (concat name ".attributeStipple") |
339 | "Face.AttributeStipple") | |
340 | (x-get-resource (concat name ".attributeBackgroundPixmap") | |
341 | "Face.AttributeBackgroundPixmap") | |
342 | (and set-anyway (face-stipple face)))) | |
69718e9d RS |
343 | (ulp (let ((resource (x-get-resource |
344 | (concat name ".attributeUnderline") | |
345 | "Face.AttributeUnderline"))) | |
346 | (if resource | |
347 | (member (downcase resource) '("on" "true")) | |
348 | (and set-anyway (face-underline-p face))))) | |
465fceed ER |
349 | ) |
350 | (if fn | |
351 | (condition-case () | |
352 | (set-face-font face fn frame) | |
353 | (error (message "font `%s' not found for face `%s'" fn name)))) | |
354 | (if fg | |
355 | (condition-case () | |
356 | (set-face-foreground face fg frame) | |
357 | (error (message "color `%s' not allocated for face `%s'" fg name)))) | |
358 | (if bg | |
359 | (condition-case () | |
360 | (set-face-background face bg frame) | |
361 | (error (message "color `%s' not allocated for face `%s'" bg name)))) | |
72418504 RS |
362 | (if bgp |
363 | (condition-case () | |
364 | (set-face-stipple face bgp frame) | |
365 | (error (message "pixmap `%s' not found for face `%s'" bgp name)))) | |
465fceed ER |
366 | (if (or ulp set-anyway) |
367 | (set-face-underline-p face ulp frame)) | |
368 | ))) | |
369 | face) | |
370 | ||
2f2ddd1e RS |
371 | (defun copy-face (old-face new-face &optional frame new-frame) |
372 | "Define a face just like OLD-FACE, with name NEW-FACE. | |
373 | If NEW-FACE already exists as a face, it is modified to be like OLD-FACE. | |
374 | If it doesn't already exist, it is created. | |
375 | ||
376 | If the optional argument FRAME is given as a frame, | |
377 | NEW-FACE is changed on FRAME only. | |
378 | If FRAME is t, the frame-independent default specification for OLD-FACE | |
379 | is copied to NEW-FACE. | |
380 | If FRAME is nil, copying is done for the frame-independent defaults | |
381 | and for each existing frame. | |
710e7005 RS |
382 | If the optional fourth argument NEW-FRAME is given, |
383 | copy the information from face OLD-FACE on frame FRAME | |
2f2ddd1e | 384 | to NEW-FACE on frame NEW-FRAME." |
710e7005 | 385 | (or new-frame (setq new-frame frame)) |
da41135a | 386 | (let ((inhibit-quit t)) |
465fceed ER |
387 | (if (null frame) |
388 | (let ((frames (frame-list))) | |
389 | (while frames | |
2f2ddd1e | 390 | (copy-face old-face new-face (car frames)) |
465fceed | 391 | (setq frames (cdr frames))) |
2f2ddd1e | 392 | (copy-face old-face new-face t)) |
da41135a KH |
393 | (setq old-face (internal-get-face old-face frame)) |
394 | (setq new-face (or (internal-find-face new-face new-frame) | |
395 | (make-face new-face))) | |
52267b56 RS |
396 | (condition-case nil |
397 | ;; A face that has a global symbolic font modifier such as `bold' | |
398 | ;; might legitimately get an error here. | |
399 | ;; Use the frame's default font in that case. | |
400 | (set-face-font new-face (face-font old-face frame) new-frame) | |
401 | (error | |
402 | (set-face-font new-face nil new-frame))) | |
710e7005 RS |
403 | (set-face-foreground new-face (face-foreground old-face frame) new-frame) |
404 | (set-face-background new-face (face-background old-face frame) new-frame) | |
72418504 RS |
405 | (set-face-stipple new-face |
406 | (face-stipple old-face frame) | |
407 | new-frame) | |
465fceed | 408 | (set-face-underline-p new-face (face-underline-p old-face frame) |
710e7005 | 409 | new-frame)) |
465fceed ER |
410 | new-face)) |
411 | ||
412 | (defun face-equal (face1 face2 &optional frame) | |
ade516a1 | 413 | "True if the faces FACE1 and FACE2 display in the same way." |
465fceed ER |
414 | (setq face1 (internal-get-face face1 frame) |
415 | face2 (internal-get-face face2 frame)) | |
416 | (and (equal (face-foreground face1 frame) (face-foreground face2 frame)) | |
417 | (equal (face-background face1 frame) (face-background face2 frame)) | |
418 | (equal (face-font face1 frame) (face-font face2 frame)) | |
ae0249df | 419 | (eq (face-underline-p face1 frame) (face-underline-p face2 frame)) |
72418504 RS |
420 | (equal (face-stipple face1 frame) |
421 | (face-stipple face2 frame)))) | |
465fceed ER |
422 | |
423 | (defun face-differs-from-default-p (face &optional frame) | |
424 | "True if face FACE displays differently from the default face, on FRAME. | |
425 | A face is considered to be ``the same'' as the default face if it is | |
426 | actually specified in the same way (equivalent fonts, etc) or if it is | |
427 | fully unspecified, and thus inherits the attributes of any face it | |
428 | is displayed on top of." | |
429 | (let ((default (internal-get-face 'default frame))) | |
430 | (setq face (internal-get-face face frame)) | |
431 | (not (and (or (equal (face-foreground default frame) | |
432 | (face-foreground face frame)) | |
433 | (null (face-foreground face frame))) | |
434 | (or (equal (face-background default frame) | |
435 | (face-background face frame)) | |
436 | (null (face-background face frame))) | |
437 | (or (equal (face-font default frame) (face-font face frame)) | |
438 | (null (face-font face frame))) | |
72418504 RS |
439 | (or (equal (face-stipple default frame) |
440 | (face-stipple face frame)) | |
441 | (null (face-stipple face frame))) | |
465fceed ER |
442 | (equal (face-underline-p default frame) |
443 | (face-underline-p face frame)) | |
444 | )))) | |
445 | ||
446 | ||
447 | (defun invert-face (face &optional frame) | |
448 | "Swap the foreground and background colors of face FACE. | |
449 | If the face doesn't specify both foreground and background, then | |
8494bbf1 | 450 | set its foreground and background to the default background and foreground." |
465fceed ER |
451 | (interactive (list (read-face-name "Invert face: "))) |
452 | (setq face (internal-get-face face frame)) | |
453 | (let ((fg (face-foreground face frame)) | |
454 | (bg (face-background face frame))) | |
455 | (if (or fg bg) | |
456 | (progn | |
457 | (set-face-foreground face bg frame) | |
458 | (set-face-background face fg frame)) | |
8494bbf1 RS |
459 | (set-face-foreground face (or (face-background 'default frame) |
460 | (cdr (assq 'background-color (frame-parameters frame)))) | |
461 | frame) | |
462 | (set-face-background face (or (face-foreground 'default frame) | |
463 | (cdr (assq 'foreground-color (frame-parameters frame)))) | |
464 | frame))) | |
465fceed ER |
465 | face) |
466 | ||
467 | ||
468 | (defun internal-try-face-font (face font &optional frame) | |
469 | "Like set-face-font, but returns nil on failure instead of an error." | |
470 | (condition-case () | |
471 | (set-face-font face font frame) | |
472 | (error nil))) | |
465fceed ER |
473 | \f |
474 | ;; Manipulating font names. | |
475 | ||
476 | (defconst x-font-regexp nil) | |
477 | (defconst x-font-regexp-head nil) | |
478 | (defconst x-font-regexp-weight nil) | |
479 | (defconst x-font-regexp-slant nil) | |
480 | ||
481 | ;;; Regexps matching font names in "Host Portable Character Representation." | |
482 | ;;; | |
483 | (let ((- "[-?]") | |
484 | (foundry "[^-]+") | |
485 | (family "[^-]+") | |
486 | (weight "\\(bold\\|demibold\\|medium\\)") ; 1 | |
487 | ; (weight\? "\\(\\*\\|bold\\|demibold\\|medium\\|\\)") ; 1 | |
488 | (weight\? "\\([^-]*\\)") ; 1 | |
489 | (slant "\\([ior]\\)") ; 2 | |
490 | ; (slant\? "\\([ior?*]?\\)") ; 2 | |
491 | (slant\? "\\([^-]?\\)") ; 2 | |
492 | ; (swidth "\\(\\*\\|normal\\|semicondensed\\|\\)") ; 3 | |
493 | (swidth "\\([^-]*\\)") ; 3 | |
494 | ; (adstyle "\\(\\*\\|sans\\|\\)") ; 4 | |
495 | (adstyle "[^-]*") ; 4 | |
496 | (pixelsize "[0-9]+") | |
497 | (pointsize "[0-9][0-9]+") | |
498 | (resx "[0-9][0-9]+") | |
499 | (resy "[0-9][0-9]+") | |
500 | (spacing "[cmp?*]") | |
501 | (avgwidth "[0-9]+") | |
502 | (registry "[^-]+") | |
503 | (encoding "[^-]+") | |
504 | ) | |
505 | (setq x-font-regexp | |
506 | (concat "\\`\\*?[-?*]" | |
507 | foundry - family - weight\? - slant\? - swidth - adstyle - | |
508 | pixelsize - pointsize - resx - resy - spacing - registry - | |
509 | encoding "[-?*]\\*?\\'" | |
510 | )) | |
511 | (setq x-font-regexp-head | |
512 | (concat "\\`[-?*]" foundry - family - weight\? - slant\? | |
513 | "\\([-*?]\\|\\'\\)")) | |
514 | (setq x-font-regexp-slant (concat - slant -)) | |
515 | (setq x-font-regexp-weight (concat - weight -)) | |
516 | nil) | |
517 | ||
281dc1c2 JB |
518 | (defun x-resolve-font-name (pattern &optional face frame) |
519 | "Return a font name matching PATTERN. | |
520 | All wildcards in PATTERN become substantiated. | |
10d89673 JB |
521 | If PATTERN is nil, return the name of the frame's base font, which never |
522 | contains wildcards. | |
281dc1c2 | 523 | Given optional arguments FACE and FRAME, try to return a font which is |
10d89673 | 524 | also the same size as FACE on FRAME." |
14e6867c RS |
525 | (or (symbolp face) |
526 | (setq face (face-name face))) | |
527 | (and (eq frame t) | |
528 | (setq frame nil)) | |
10d89673 | 529 | (if pattern |
8db93e45 RS |
530 | ;; Note that x-list-fonts has code to handle a face with nil as its font. |
531 | (let ((fonts (x-list-fonts pattern face frame))) | |
10d89673 JB |
532 | (or fonts |
533 | (if face | |
7cf6fac1 | 534 | (error "No fonts matching pattern are the same size as `%s'" |
25c08a32 | 535 | face) |
7cf6fac1 | 536 | (error "No fonts match `%s'" pattern))) |
10d89673 JB |
537 | (car fonts)) |
538 | (cdr (assq 'font (frame-parameters (selected-frame)))))) | |
281dc1c2 | 539 | |
465fceed ER |
540 | (defun x-frob-font-weight (font which) |
541 | (if (or (string-match x-font-regexp font) | |
542 | (string-match x-font-regexp-head font) | |
543 | (string-match x-font-regexp-weight font)) | |
544 | (concat (substring font 0 (match-beginning 1)) which | |
545 | (substring font (match-end 1))) | |
546 | nil)) | |
547 | ||
548 | (defun x-frob-font-slant (font which) | |
549 | (cond ((or (string-match x-font-regexp font) | |
550 | (string-match x-font-regexp-head font)) | |
551 | (concat (substring font 0 (match-beginning 2)) which | |
552 | (substring font (match-end 2)))) | |
553 | ((string-match x-font-regexp-slant font) | |
554 | (concat (substring font 0 (match-beginning 1)) which | |
555 | (substring font (match-end 1)))) | |
556 | (t nil))) | |
557 | ||
558 | ||
559 | (defun x-make-font-bold (font) | |
f3f31ccf RS |
560 | "Given an X font specification, make a bold version of it. |
561 | If that can't be done, return nil." | |
465fceed ER |
562 | (x-frob-font-weight font "bold")) |
563 | ||
564 | (defun x-make-font-demibold (font) | |
f3f31ccf RS |
565 | "Given an X font specification, make a demibold version of it. |
566 | If that can't be done, return nil." | |
465fceed ER |
567 | (x-frob-font-weight font "demibold")) |
568 | ||
569 | (defun x-make-font-unbold (font) | |
f3f31ccf RS |
570 | "Given an X font specification, make a non-bold version of it. |
571 | If that can't be done, return nil." | |
465fceed ER |
572 | (x-frob-font-weight font "medium")) |
573 | ||
574 | (defun x-make-font-italic (font) | |
f3f31ccf RS |
575 | "Given an X font specification, make an italic version of it. |
576 | If that can't be done, return nil." | |
465fceed ER |
577 | (x-frob-font-slant font "i")) |
578 | ||
579 | (defun x-make-font-oblique (font) ; you say tomayto... | |
f3f31ccf RS |
580 | "Given an X font specification, make an oblique version of it. |
581 | If that can't be done, return nil." | |
465fceed ER |
582 | (x-frob-font-slant font "o")) |
583 | ||
584 | (defun x-make-font-unitalic (font) | |
f3f31ccf RS |
585 | "Given an X font specification, make a non-italic version of it. |
586 | If that can't be done, return nil." | |
465fceed | 587 | (x-frob-font-slant font "r")) |
465fceed ER |
588 | \f |
589 | ;;; non-X-specific interface | |
590 | ||
bb9a81fc | 591 | (defun make-face-bold (face &optional frame noerror) |
465fceed | 592 | "Make the font of the given face be bold, if possible. |
bb9a81fc | 593 | If NOERROR is non-nil, return nil on failure." |
465fceed | 594 | (interactive (list (read-face-name "Make which face bold: "))) |
534dbc97 | 595 | (if (and (eq frame t) (listp (face-font face t))) |
f3f31ccf RS |
596 | (set-face-font face (if (memq 'italic (face-font face t)) |
597 | '(bold italic) '(bold)) | |
598 | t) | |
599 | (let ((ofont (face-font face frame)) | |
4b3203d9 | 600 | font) |
f3f31ccf RS |
601 | (if (null frame) |
602 | (let ((frames (frame-list))) | |
603 | ;; Make this face bold in global-face-data. | |
604 | (make-face-bold face t noerror) | |
605 | ;; Make this face bold in each frame. | |
606 | (while frames | |
607 | (make-face-bold face (car frames) noerror) | |
608 | (setq frames (cdr frames)))) | |
609 | (setq face (internal-get-face face frame)) | |
610 | (setq font (or (face-font face frame) | |
611 | (face-font face t))) | |
612 | (if (listp font) | |
613 | (setq font nil)) | |
614 | (setq font (or font | |
615 | (face-font 'default frame) | |
616 | (cdr (assq 'font (frame-parameters frame))))) | |
96616c04 | 617 | (and font (make-face-bold-internal face frame font))) |
f3f31ccf RS |
618 | (or (not (equal ofont (face-font face))) |
619 | (and (not noerror) | |
620 | (error "No bold version of %S" font)))))) | |
621 | ||
4b3203d9 RS |
622 | (defun make-face-bold-internal (face frame font) |
623 | (let (f2) | |
624 | (or (and (setq f2 (x-make-font-bold font)) | |
625 | (internal-try-face-font face f2 frame)) | |
626 | (and (setq f2 (x-make-font-demibold font)) | |
627 | (internal-try-face-font face f2 frame))))) | |
bb9a81fc JB |
628 | |
629 | (defun make-face-italic (face &optional frame noerror) | |
465fceed | 630 | "Make the font of the given face be italic, if possible. |
bb9a81fc | 631 | If NOERROR is non-nil, return nil on failure." |
465fceed | 632 | (interactive (list (read-face-name "Make which face italic: "))) |
534dbc97 | 633 | (if (and (eq frame t) (listp (face-font face t))) |
f3f31ccf RS |
634 | (set-face-font face (if (memq 'bold (face-font face t)) |
635 | '(bold italic) '(italic)) | |
636 | t) | |
637 | (let ((ofont (face-font face frame)) | |
4b3203d9 | 638 | font) |
f3f31ccf RS |
639 | (if (null frame) |
640 | (let ((frames (frame-list))) | |
641 | ;; Make this face italic in global-face-data. | |
642 | (make-face-italic face t noerror) | |
643 | ;; Make this face italic in each frame. | |
644 | (while frames | |
645 | (make-face-italic face (car frames) noerror) | |
646 | (setq frames (cdr frames)))) | |
647 | (setq face (internal-get-face face frame)) | |
648 | (setq font (or (face-font face frame) | |
649 | (face-font face t))) | |
650 | (if (listp font) | |
651 | (setq font nil)) | |
652 | (setq font (or font | |
653 | (face-font 'default frame) | |
654 | (cdr (assq 'font (frame-parameters frame))))) | |
96616c04 | 655 | (and font (make-face-italic-internal face frame font))) |
f3f31ccf RS |
656 | (or (not (equal ofont (face-font face))) |
657 | (and (not noerror) | |
658 | (error "No italic version of %S" font)))))) | |
659 | ||
4b3203d9 RS |
660 | (defun make-face-italic-internal (face frame font) |
661 | (let (f2) | |
662 | (or (and (setq f2 (x-make-font-italic font)) | |
663 | (internal-try-face-font face f2 frame)) | |
664 | (and (setq f2 (x-make-font-oblique font)) | |
665 | (internal-try-face-font face f2 frame))))) | |
bb9a81fc JB |
666 | |
667 | (defun make-face-bold-italic (face &optional frame noerror) | |
465fceed | 668 | "Make the font of the given face be bold and italic, if possible. |
bb9a81fc | 669 | If NOERROR is non-nil, return nil on failure." |
465fceed | 670 | (interactive (list (read-face-name "Make which face bold-italic: "))) |
534dbc97 | 671 | (if (and (eq frame t) (listp (face-font face t))) |
f3f31ccf RS |
672 | (set-face-font face '(bold italic) t) |
673 | (let ((ofont (face-font face frame)) | |
674 | font) | |
675 | (if (null frame) | |
676 | (let ((frames (frame-list))) | |
677 | ;; Make this face bold-italic in global-face-data. | |
678 | (make-face-bold-italic face t noerror) | |
679 | ;; Make this face bold in each frame. | |
680 | (while frames | |
681 | (make-face-bold-italic face (car frames) noerror) | |
682 | (setq frames (cdr frames)))) | |
683 | (setq face (internal-get-face face frame)) | |
684 | (setq font (or (face-font face frame) | |
685 | (face-font face t))) | |
686 | (if (listp font) | |
687 | (setq font nil)) | |
688 | (setq font (or font | |
689 | (face-font 'default frame) | |
690 | (cdr (assq 'font (frame-parameters frame))))) | |
96616c04 | 691 | (and font (make-face-bold-italic-internal face frame font))) |
f3f31ccf RS |
692 | (or (not (equal ofont (face-font face))) |
693 | (and (not noerror) | |
694 | (error "No bold italic version of %S" font)))))) | |
695 | ||
4b3203d9 | 696 | (defun make-face-bold-italic-internal (face frame font) |
f3f31ccf RS |
697 | (let (f2 f3) |
698 | (or (and (setq f2 (x-make-font-italic font)) | |
699 | (not (equal font f2)) | |
700 | (setq f3 (x-make-font-bold f2)) | |
701 | (not (equal f2 f3)) | |
702 | (internal-try-face-font face f3 frame)) | |
703 | (and (setq f2 (x-make-font-oblique font)) | |
704 | (not (equal font f2)) | |
705 | (setq f3 (x-make-font-bold f2)) | |
706 | (not (equal f2 f3)) | |
707 | (internal-try-face-font face f3 frame)) | |
708 | (and (setq f2 (x-make-font-italic font)) | |
709 | (not (equal font f2)) | |
710 | (setq f3 (x-make-font-demibold f2)) | |
711 | (not (equal f2 f3)) | |
712 | (internal-try-face-font face f3 frame)) | |
713 | (and (setq f2 (x-make-font-oblique font)) | |
714 | (not (equal font f2)) | |
715 | (setq f3 (x-make-font-demibold f2)) | |
716 | (not (equal f2 f3)) | |
717 | (internal-try-face-font face f3 frame))))) | |
bb9a81fc JB |
718 | |
719 | (defun make-face-unbold (face &optional frame noerror) | |
465fceed | 720 | "Make the font of the given face be non-bold, if possible. |
bb9a81fc | 721 | If NOERROR is non-nil, return nil on failure." |
465fceed | 722 | (interactive (list (read-face-name "Make which face non-bold: "))) |
534dbc97 | 723 | (if (and (eq frame t) (listp (face-font face t))) |
f3f31ccf RS |
724 | (set-face-font face (if (memq 'italic (face-font face t)) |
725 | '(italic) nil) | |
726 | t) | |
727 | (let ((ofont (face-font face frame)) | |
728 | font font1) | |
729 | (if (null frame) | |
730 | (let ((frames (frame-list))) | |
731 | ;; Make this face unbold in global-face-data. | |
732 | (make-face-unbold face t noerror) | |
733 | ;; Make this face unbold in each frame. | |
734 | (while frames | |
735 | (make-face-unbold face (car frames) noerror) | |
736 | (setq frames (cdr frames)))) | |
737 | (setq face (internal-get-face face frame)) | |
738 | (setq font1 (or (face-font face frame) | |
739 | (face-font face t))) | |
740 | (if (listp font1) | |
741 | (setq font1 nil)) | |
742 | (setq font1 (or font1 | |
743 | (face-font 'default frame) | |
744 | (cdr (assq 'font (frame-parameters frame))))) | |
96616c04 | 745 | (setq font (and font1 (x-make-font-unbold font1))) |
f3f31ccf RS |
746 | (if font (internal-try-face-font face font frame))) |
747 | (or (not (equal ofont (face-font face))) | |
748 | (and (not noerror) | |
749 | (error "No unbold version of %S" font1)))))) | |
bb9a81fc JB |
750 | |
751 | (defun make-face-unitalic (face &optional frame noerror) | |
465fceed | 752 | "Make the font of the given face be non-italic, if possible. |
bb9a81fc | 753 | If NOERROR is non-nil, return nil on failure." |
465fceed | 754 | (interactive (list (read-face-name "Make which face non-italic: "))) |
534dbc97 | 755 | (if (and (eq frame t) (listp (face-font face t))) |
f3f31ccf RS |
756 | (set-face-font face (if (memq 'bold (face-font face t)) |
757 | '(bold) nil) | |
758 | t) | |
759 | (let ((ofont (face-font face frame)) | |
760 | font font1) | |
761 | (if (null frame) | |
762 | (let ((frames (frame-list))) | |
763 | ;; Make this face unitalic in global-face-data. | |
764 | (make-face-unitalic face t noerror) | |
765 | ;; Make this face unitalic in each frame. | |
766 | (while frames | |
767 | (make-face-unitalic face (car frames) noerror) | |
768 | (setq frames (cdr frames)))) | |
769 | (setq face (internal-get-face face frame)) | |
770 | (setq font1 (or (face-font face frame) | |
771 | (face-font face t))) | |
772 | (if (listp font1) | |
773 | (setq font1 nil)) | |
774 | (setq font1 (or font1 | |
775 | (face-font 'default frame) | |
776 | (cdr (assq 'font (frame-parameters frame))))) | |
96616c04 | 777 | (setq font (and font1 (x-make-font-unitalic font1))) |
f3f31ccf RS |
778 | (if font (internal-try-face-font face font frame))) |
779 | (or (not (equal ofont (face-font face))) | |
780 | (and (not noerror) | |
781 | (error "No unitalic version of %S" font1)))))) | |
465fceed | 782 | \f |
710e7005 RS |
783 | (defvar list-faces-sample-text |
784 | "abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
785 | "*Text string to display as the sample text for `list-faces-display'.") | |
786 | ||
787 | ;; The name list-faces would be more consistent, but let's avoid a conflict | |
788 | ;; with Lucid, which uses that name differently. | |
789 | (defun list-faces-display () | |
790 | "List all faces, using the same sample text in each. | |
791 | The sample text is a string that comes from the variable | |
792 | `list-faces-sample-text'. | |
793 | ||
794 | It is possible to give a particular face name different appearances in | |
795 | different frames. This command shows the appearance in the | |
796 | selected frame." | |
797 | (interactive) | |
798 | (let ((faces (sort (face-list) (function string-lessp))) | |
799 | (face nil) | |
800 | (frame (selected-frame)) | |
801 | disp-frame window) | |
802 | (with-output-to-temp-buffer "*Faces*" | |
803 | (save-excursion | |
804 | (set-buffer standard-output) | |
805 | (setq truncate-lines t) | |
806 | (while faces | |
807 | (setq face (car faces)) | |
808 | (setq faces (cdr faces)) | |
809 | (insert (format "%25s " (symbol-name face))) | |
810 | (let ((beg (point))) | |
811 | (insert list-faces-sample-text) | |
812 | (insert "\n") | |
23b04eac RS |
813 | (put-text-property beg (1- (point)) 'face face) |
814 | ;; If the sample text has multiple lines, line up all of them. | |
815 | (goto-char beg) | |
816 | (forward-line 1) | |
817 | (while (not (eobp)) | |
818 | (insert " ") | |
819 | (forward-line 1)))) | |
710e7005 RS |
820 | (goto-char (point-min)))) |
821 | ;; If the *Faces* buffer appears in a different frame, | |
822 | ;; copy all the face definitions from FRAME, | |
823 | ;; so that the display will reflect the frame that was selected. | |
824 | (setq window (get-buffer-window (get-buffer "*Faces*") t)) | |
825 | (setq disp-frame (if window (window-frame window) | |
826 | (car (frame-list)))) | |
827 | (or (eq frame disp-frame) | |
828 | (let ((faces (face-list))) | |
829 | (while faces | |
830 | (copy-face (car faces) (car faces) frame disp-frame) | |
831 | (setq faces (cdr faces))))))) | |
832 | \f | |
19ae9866 RS |
833 | ;;; Make the standard faces. |
834 | ;;; The C code knows the default and modeline faces as faces 0 and 1, | |
835 | ;;; so they must be the first two faces made. | |
e09c52a8 | 836 | (defun face-initialize () |
465fceed | 837 | (make-face 'default) |
ebea97d8 | 838 | (make-face 'modeline) |
465fceed | 839 | (make-face 'highlight) |
19ae9866 | 840 | |
465fceed | 841 | ;; These aren't really special in any way, but they're nice to have around. |
19ae9866 | 842 | |
465fceed ER |
843 | (make-face 'bold) |
844 | (make-face 'italic) | |
845 | (make-face 'bold-italic) | |
578d09a6 | 846 | (make-face 'region) |
e09c52a8 | 847 | (make-face 'secondary-selection) |
f4b9e76b | 848 | (make-face 'underline) |
e09c52a8 | 849 | |
578d09a6 | 850 | (setq region-face (face-id 'region)) |
8494bbf1 | 851 | |
19ae9866 RS |
852 | ;; Specify the global properties of these faces |
853 | ;; so they will come out right on new frames. | |
854 | ||
855 | (make-face-bold 'bold t) | |
856 | (make-face-italic 'italic t) | |
857 | (make-face-bold-italic 'bold-italic t) | |
858 | ||
859 | (set-face-background 'highlight '("darkseagreen2" "green" t) t) | |
566b0ad2 | 860 | (set-face-background 'region '("gray" underline) t) |
19ae9866 RS |
861 | (set-face-background 'secondary-selection '("paleturquoise" "green" t) t) |
862 | (set-face-background 'modeline '(t) t) | |
863 | (set-face-underline-p 'underline t t) | |
864 | ||
865 | ;; Set up the faces of all existing X Window frames | |
866 | ;; from those global properties, unless already set in a given frame. | |
867 | ||
e09c52a8 RS |
868 | (let ((frames (frame-list))) |
869 | (while frames | |
87485d6f | 870 | (if (framep (car frames)) |
19ae9866 RS |
871 | (let ((frame (car frames)) |
872 | (rest global-face-data)) | |
873 | (while rest | |
874 | (let ((face (car (car rest)))) | |
875 | (or (face-differs-from-default-p face) | |
876 | (face-fill-in face (cdr (car rest)) frame))) | |
877 | (setq rest (cdr rest))))) | |
e09c52a8 RS |
878 | (setq frames (cdr frames))))) |
879 | ||
465fceed | 880 | \f |
465fceed ER |
881 | ;; Like x-create-frame but also set up the faces. |
882 | ||
883 | (defun x-create-frame-with-faces (&optional parameters) | |
e09c52a8 RS |
884 | (if (null global-face-data) |
885 | (x-create-frame parameters) | |
e69e8fad RS |
886 | (let* ((visibility-spec (assq 'visibility parameters)) |
887 | (frame (x-create-frame (cons '(visibility . nil) parameters))) | |
e09c52a8 | 888 | (faces (copy-alist global-face-data)) |
e7cc6aa5 | 889 | success |
ebea97d8 | 890 | (rest faces)) |
e7cc6aa5 RS |
891 | (unwind-protect |
892 | (progn | |
893 | (set-frame-face-alist frame faces) | |
894 | ||
895 | (if (cdr (or (assq 'reverse parameters) | |
896 | (assq 'reverse default-frame-alist) | |
897 | (let ((resource (x-get-resource "reverseVideo" | |
898 | "ReverseVideo"))) | |
899 | (if resource | |
900 | (cons nil (member (downcase resource) | |
901 | '("on" "true"))))))) | |
902 | (let ((params (frame-parameters frame))) | |
903 | (modify-frame-parameters | |
904 | frame | |
905 | (list (cons 'foreground-color (cdr (assq 'background-color params))) | |
906 | (cons 'background-color (cdr (assq 'foreground-color params))) | |
907 | (cons 'mouse-color (cdr (assq 'background-color params))) | |
908 | (cons 'border-color (cdr (assq 'background-color params))))) | |
909 | (modify-frame-parameters | |
910 | frame | |
911 | (list (cons 'cursor-color (cdr (assq 'background-color params))))))) | |
912 | ||
913 | ;; Copy the vectors that represent the faces. | |
914 | ;; Also fill them in from X resources. | |
915 | (while rest | |
916 | (let ((global (cdr (car rest)))) | |
917 | (setcdr (car rest) (vector 'face | |
918 | (face-name (cdr (car rest))) | |
919 | (face-id (cdr (car rest))) | |
920 | nil nil nil nil nil)) | |
921 | (face-fill-in (car (car rest)) global frame)) | |
922 | (make-face-x-resource-internal (cdr (car rest)) frame t) | |
923 | (setq rest (cdr rest))) | |
924 | (if (null visibility-spec) | |
925 | (make-frame-visible frame) | |
926 | (modify-frame-parameters frame (list visibility-spec))) | |
927 | (setq success t) | |
928 | frame) | |
929 | (or success | |
930 | (delete-frame frame)))))) | |
e09c52a8 | 931 | |
9d52c8d3 RS |
932 | ;; Update a frame's faces when we change its default font. |
933 | (defun frame-update-faces (frame) | |
934 | (let* ((faces global-face-data) | |
935 | (rest faces)) | |
936 | (while rest | |
937 | (let* ((face (car (car rest))) | |
938 | (font (face-font face t))) | |
939 | (if (listp font) | |
940 | (let ((bold (memq 'bold font)) | |
941 | (italic (memq 'italic font))) | |
99fb9482 KH |
942 | ;; Ignore any previous (string-valued) font, it might not even |
943 | ;; be the right size anymore. | |
944 | (set-face-font face nil frame) | |
9d52c8d3 RS |
945 | (cond ((and bold italic) |
946 | (make-face-bold-italic face frame t)) | |
947 | (bold | |
948 | (make-face-bold face frame t)) | |
949 | (italic | |
950 | (make-face-italic face frame t))))) | |
951 | (setq rest (cdr rest))) | |
952 | frame))) | |
953 | ||
19ae9866 RS |
954 | ;; Fill in the face FACE from frame-independent face data DATA. |
955 | ;; DATA should be the non-frame-specific ("global") face vector | |
956 | ;; for the face. FACE should be a face name or face object. | |
957 | ;; FRAME is the frame to act on; it must be an actual frame, not nil or t. | |
958 | (defun face-fill-in (face data frame) | |
959 | (condition-case nil | |
960 | (let ((foreground (face-foreground data)) | |
961 | (background (face-background data)) | |
962 | (font (face-font data))) | |
963 | (set-face-underline-p face (face-underline-p data) frame) | |
964 | (if foreground | |
965 | (face-try-color-list 'set-face-foreground | |
966 | face foreground frame)) | |
967 | (if background | |
968 | (face-try-color-list 'set-face-background | |
969 | face background frame)) | |
970 | (if (listp font) | |
971 | (let ((bold (memq 'bold font)) | |
972 | (italic (memq 'italic font))) | |
973 | (cond ((and bold italic) | |
974 | (make-face-bold-italic face frame)) | |
975 | (bold | |
976 | (make-face-bold face frame)) | |
977 | (italic | |
978 | (make-face-italic face frame)))) | |
979 | (if font | |
980 | (set-face-font face font frame)))) | |
981 | (error nil))) | |
e09c52a8 | 982 | |
4099a32d RS |
983 | ;; Assuming COLOR is a valid color name, |
984 | ;; return t if it can be displayed on FRAME. | |
985 | (defun face-color-supported-p (frame color background-p) | |
986 | (or (x-display-color-p frame) | |
987 | ;; A black-and-white display can implement these. | |
988 | (member color '("black" "white")) | |
989 | ;; A black-and-white display can fake these for background. | |
990 | (and background-p | |
991 | (member color '("gray" "gray1" "gray3"))) | |
992 | ;; A grayscale display can implement colors that are gray (more or less). | |
993 | (and (x-display-grayscale-p frame) | |
994 | (let* ((values (x-color-values color frame)) | |
995 | (r (nth 0 values)) | |
996 | (g (nth 1 values)) | |
997 | (b (nth 2 values))) | |
998 | (and (< (abs (- r g)) (/ (abs (+ r g)) 20)) | |
999 | (< (abs (- g b)) (/ (abs (+ g b)) 20)) | |
1000 | (< (abs (- b r)) (/ (abs (+ b r)) 20))))))) | |
1001 | ||
19ae9866 RS |
1002 | ;; Use FUNCTION to store a color in FACE on FRAME. |
1003 | ;; COLORS is either a single color or a list of colors. | |
1004 | ;; If it is a list, try the colors one by one until one of them | |
1005 | ;; succeeds. We signal an error only if all the colors failed. | |
1006 | ;; t as COLORS or as an element of COLORS means to invert the face. | |
1007 | ;; That can't fail, so any subsequent elements after the t are ignored. | |
1008 | (defun face-try-color-list (function face colors frame) | |
1009 | (if (stringp colors) | |
4099a32d RS |
1010 | (if (face-color-supported-p frame colors |
1011 | (eq function 'set-face-background)) | |
1012 | (funcall function face colors frame)) | |
19ae9866 RS |
1013 | (if (eq colors t) |
1014 | (invert-face face frame) | |
1015 | (let (done) | |
1016 | (while (and colors (not done)) | |
4099a32d RS |
1017 | (if (or (eq (car colors) t) |
1018 | (face-color-supported-p frame (car colors) | |
1019 | (eq function 'set-face-background))) | |
1020 | (if (cdr colors) | |
1021 | ;; If there are more colors to try, catch errors | |
1022 | ;; and set `done' if we succeed. | |
1023 | (condition-case nil | |
1024 | (progn | |
1025 | (cond ((eq (car colors) t) | |
1026 | (invert-face face frame)) | |
1027 | ((eq (car colors) 'underline) | |
1028 | (set-face-underline-p face t frame)) | |
1029 | (t | |
1030 | (funcall function face (car colors) frame))) | |
1031 | (setq done t)) | |
1032 | (error nil)) | |
1033 | ;; If this is the last color, let the error get out if it fails. | |
1034 | ;; If it succeeds, we will exit anyway after this iteration. | |
1035 | (cond ((eq (car colors) t) | |
1036 | (invert-face face frame)) | |
1037 | ((eq (car colors) 'underline) | |
1038 | (set-face-underline-p face t frame)) | |
1039 | (t | |
1040 | (funcall function face (car colors) frame))))) | |
19ae9866 | 1041 | (setq colors (cdr colors))))))) |
e09c52a8 RS |
1042 | |
1043 | ;; If we are already using x-window frames, initialize faces for them. | |
1044 | (if (eq (framep (selected-frame)) 'x) | |
1045 | (face-initialize)) | |
465fceed | 1046 | |
f0138172 JB |
1047 | (provide 'faces) |
1048 | ||
465fceed | 1049 | ;;; faces.el ends here |