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465fceed ER |
1 | ;;; faces.el --- Lisp interface to the c "face" structure |
2 | ||
732be465 | 3 | ;; Copyright (C) 1992, 1993, 1994, 1995 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) | |
ca58b3ec | 40 | (put 'set-face-stipple 'byte-optimizer nil) |
39b3b754 | 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 | ||
962a60aa RS |
52 | (defun facep (x) |
53 | "Return t if X is a face name or an internal face vector." | |
54 | (and (or (internal-facep x) | |
55 | (and (symbolp x) (assq x global-face-data))) | |
56 | t)) | |
57 | ||
465fceed | 58 | (defmacro internal-check-face (face) |
962a60aa RS |
59 | (` (or (internal-facep (, face)) |
60 | (signal 'wrong-type-argument (list 'internal-facep (, face)))))) | |
465fceed | 61 | |
bdda3754 | 62 | ;;; Accessors. |
feaad827 | 63 | (defun face-name (face) |
465fceed ER |
64 | "Return the name of face FACE." |
65 | (aref (internal-get-face face) 1)) | |
66 | ||
feaad827 | 67 | (defun face-id (face) |
465fceed ER |
68 | "Return the internal ID number of face FACE." |
69 | (aref (internal-get-face face) 2)) | |
70 | ||
feaad827 | 71 | (defun face-font (face &optional frame) |
465fceed ER |
72 | "Return the font name of face FACE, or nil if it is unspecified. |
73 | If the optional argument FRAME is given, report on face FACE in that frame. | |
f3f31ccf RS |
74 | If FRAME is t, report on the defaults for face FACE (for new frames). |
75 | The font default for a face is either nil, or a list | |
76 | of the form (bold), (italic) or (bold italic). | |
77 | If FRAME is omitted or nil, use the selected frame." | |
465fceed ER |
78 | (aref (internal-get-face face frame) 3)) |
79 | ||
feaad827 | 80 | (defun face-foreground (face &optional frame) |
465fceed ER |
81 | "Return the foreground color name of face FACE, or nil if unspecified. |
82 | If the optional argument FRAME is given, report on face FACE in that frame. | |
f3f31ccf RS |
83 | If FRAME is t, report on the defaults for face FACE (for new frames). |
84 | If FRAME is omitted or nil, use the selected frame." | |
465fceed ER |
85 | (aref (internal-get-face face frame) 4)) |
86 | ||
feaad827 | 87 | (defun face-background (face &optional frame) |
465fceed ER |
88 | "Return the background color name of face FACE, or nil if unspecified. |
89 | If the optional argument FRAME is given, report on face FACE in that frame. | |
f3f31ccf RS |
90 | If FRAME is t, report on the defaults for face FACE (for new frames). |
91 | If FRAME is omitted or nil, use the selected frame." | |
465fceed ER |
92 | (aref (internal-get-face face frame) 5)) |
93 | ||
feaad827 | 94 | (defun face-stipple (face &optional frame) |
72418504 RS |
95 | "Return the stipple pixmap name of face FACE, or nil if unspecified. |
96 | If the optional argument FRAME is given, report on face FACE in that frame. | |
97 | If FRAME is t, report on the defaults for face FACE (for new frames). | |
98 | If FRAME is omitted or nil, use the selected frame." | |
99 | (aref (internal-get-face face frame) 6)) | |
100 | ||
101 | (defalias 'face-background-pixmap 'face-stipple) | |
465fceed | 102 | |
feaad827 | 103 | (defun face-underline-p (face &optional frame) |
465fceed ER |
104 | "Return t if face FACE is underlined. |
105 | If the optional argument FRAME is given, report on face FACE in that frame. | |
f3f31ccf RS |
106 | If FRAME is t, report on the defaults for face FACE (for new frames). |
107 | If FRAME is omitted or nil, use the selected frame." | |
465fceed ER |
108 | (aref (internal-get-face face frame) 7)) |
109 | ||
bdda3754 JB |
110 | \f |
111 | ;;; Mutators. | |
465fceed | 112 | |
feaad827 | 113 | (defun set-face-font (face font &optional frame) |
465fceed ER |
114 | "Change the font of face FACE to FONT (a string). |
115 | If the optional FRAME argument is provided, change only | |
116 | in that frame; otherwise change each frame." | |
117 | (interactive (internal-face-interactive "font")) | |
e17dbede | 118 | (if (stringp font) (setq font (x-resolve-font-name font 'default frame))) |
10d89673 | 119 | (internal-set-face-1 face 'font font 3 frame)) |
465fceed | 120 | |
feaad827 | 121 | (defun set-face-foreground (face color &optional frame) |
465fceed ER |
122 | "Change the foreground color of face FACE to COLOR (a string). |
123 | If the optional FRAME argument is provided, change only | |
124 | in that frame; otherwise change each frame." | |
125 | (interactive (internal-face-interactive "foreground")) | |
f0138172 | 126 | (internal-set-face-1 face 'foreground color 4 frame)) |
465fceed | 127 | |
ef436392 KH |
128 | (defvar face-default-stipple "gray3" |
129 | "Default stipple pattern used on monochrome displays. | |
130 | This stipple pattern is used on monochrome displays | |
131 | instead of shades of gray for a face background color. | |
132 | See `set-face-stipple' for possible values for this variable.") | |
133 | ||
134 | (defun face-color-gray-p (color &optional frame) | |
135 | "Return t if COLOR is a shade of gray (or white or black). | |
136 | FRAME specifies the frame and thus the display for interpreting COLOR." | |
137 | (let* ((values (x-color-values color frame)) | |
138 | (r (nth 0 values)) | |
139 | (g (nth 1 values)) | |
140 | (b (nth 2 values))) | |
141 | (and (< (abs (- r g)) (/ (max 1 (abs r) (abs g)) 20)) | |
142 | (< (abs (- g b)) (/ (max 1 (abs g) (abs b)) 20)) | |
143 | (< (abs (- b r)) (/ (max 1 (abs b) (abs r)) 20))))) | |
144 | ||
feaad827 | 145 | (defun set-face-background (face color &optional frame) |
465fceed ER |
146 | "Change the background color of face FACE to COLOR (a string). |
147 | If the optional FRAME argument is provided, change only | |
148 | in that frame; otherwise change each frame." | |
149 | (interactive (internal-face-interactive "background")) | |
ee09252a RS |
150 | ;; For a specific frame, use gray stipple instead of gray color |
151 | ;; if the display does not support a gray color. | |
21ef90ee | 152 | (if (and frame (not (eq frame t)) color |
f1d71b2f RS |
153 | ;; Check for supportedness for foreground, not for background! |
154 | ;; face-color-supported-p is smart enough to know | |
155 | ;; that grays are "supported" as background | |
156 | ;; because we are supposed to use stipple for them! | |
157 | (not (face-color-supported-p frame color nil))) | |
ef436392 | 158 | (set-face-stipple face face-default-stipple frame) |
d0672e0d RS |
159 | (if (null frame) |
160 | (let ((frames (frame-list))) | |
161 | (while frames | |
162 | (set-face-background (face-name face) color (car frames)) | |
163 | (setq frames (cdr frames))) | |
164 | (set-face-background face color t) | |
165 | color) | |
166 | (internal-set-face-1 face 'background color 5 frame)))) | |
465fceed | 167 | |
ef436392 | 168 | (defun set-face-stipple (face pixmap &optional frame) |
72418504 RS |
169 | "Change the stipple pixmap of face FACE to PIXMAP. |
170 | PIXMAP should be a string, the name of a file of pixmap data. | |
171 | The directories listed in the `x-bitmap-file-path' variable are searched. | |
465fceed | 172 | |
72418504 RS |
173 | Alternatively, PIXMAP may be a list of the form (WIDTH HEIGHT DATA) |
174 | where WIDTH and HEIGHT are the size in pixels, | |
175 | and DATA is a string, containing the raw bits of the bitmap. | |
465fceed | 176 | |
72418504 RS |
177 | If the optional FRAME argument is provided, change only |
178 | in that frame; otherwise change each frame." | |
179 | (interactive (internal-face-interactive "stipple")) | |
ef436392 | 180 | (internal-set-face-1 face 'background-pixmap pixmap 6 frame)) |
72418504 RS |
181 | |
182 | (defalias 'set-face-background-pixmap 'set-face-stipple) | |
465fceed | 183 | |
feaad827 | 184 | (defun set-face-underline-p (face underline-p &optional frame) |
465fceed ER |
185 | "Specify whether face FACE is underlined. (Yes if UNDERLINE-P is non-nil.) |
186 | If the optional FRAME argument is provided, change only | |
187 | in that frame; otherwise change each frame." | |
188 | (interactive (internal-face-interactive "underline-p" "underlined")) | |
f0138172 | 189 | (internal-set-face-1 face 'underline underline-p 7 frame)) |
1c0a8710 | 190 | \f |
2b979e14 | 191 | (defun modify-face-read-string (face default name alist) |
6ffb01c4 RS |
192 | (let ((value |
193 | (completing-read | |
194 | (if default | |
195 | (format "Set face %s %s (default %s): " | |
196 | face name (downcase default)) | |
197 | (format "Set face %s %s: " face name)) | |
198 | alist))) | |
199 | (cond ((equal value "none") | |
200 | nil) | |
201 | ((equal value "") | |
202 | default) | |
203 | (t value)))) | |
204 | ||
205 | (defun modify-face (face foreground background stipple | |
206 | bold-p italic-p underline-p) | |
1c0a8710 | 207 | "Change the display attributes for face FACE. |
6ffb01c4 RS |
208 | FOREGROUND and BACKGROUND should be color strings or nil. |
209 | STIPPLE should be a stipple pattern name or nil. | |
1c0a8710 RS |
210 | BOLD-P, ITALIC-P, and UNDERLINE-P specify whether the face should be set bold, |
211 | in italic, and underlined, respectively. (Yes if non-nil.) | |
212 | If called interactively, prompts for a face and face attributes." | |
213 | (interactive | |
214 | (let* ((completion-ignore-case t) | |
6ffb01c4 RS |
215 | (face (symbol-name (read-face-name "Modify face: "))) |
216 | (colors (mapcar 'list x-colors)) | |
217 | (stipples (mapcar 'list | |
218 | (apply 'nconc | |
219 | (mapcar 'directory-files | |
220 | x-bitmap-file-path)))) | |
2b979e14 RS |
221 | (foreground (modify-face-read-string |
222 | face (face-foreground (intern face)) | |
223 | "foreground" colors)) | |
224 | (background (modify-face-read-string | |
225 | face (face-background (intern face)) | |
226 | "background" colors)) | |
227 | (stipple (modify-face-read-string | |
228 | face (face-stipple (intern face)) | |
229 | "stipple" stipples)) | |
6ffb01c4 RS |
230 | (bold-p (y-or-n-p (concat "Set face " face " bold "))) |
231 | (italic-p (y-or-n-p (concat "Set face " face " italic "))) | |
232 | (underline-p (y-or-n-p (concat "Set face " face " underline ")))) | |
1c0a8710 RS |
233 | (message "Face %s: %s" face |
234 | (mapconcat 'identity | |
235 | (delq nil | |
236 | (list (and foreground (concat (downcase foreground) " foreground")) | |
237 | (and background (concat (downcase background) " background")) | |
6ffb01c4 | 238 | (and stipple (concat (downcase stipple) " stipple")) |
1c0a8710 RS |
239 | (and bold-p "bold") (and italic-p "italic") |
240 | (and underline-p "underline"))) ", ")) | |
6ffb01c4 RS |
241 | (list (intern face) foreground background stipple |
242 | bold-p italic-p underline-p))) | |
1c0a8710 RS |
243 | (condition-case nil (set-face-foreground face foreground) (error nil)) |
244 | (condition-case nil (set-face-background face background) (error nil)) | |
6ffb01c4 | 245 | (condition-case nil (set-face-stipple face stipple) (error nil)) |
1c0a8710 RS |
246 | (funcall (if bold-p 'make-face-bold 'make-face-unbold) face nil t) |
247 | (funcall (if italic-p 'make-face-italic 'make-face-unitalic) face nil t) | |
248 | (set-face-underline-p face underline-p) | |
249 | (and (interactive-p) (redraw-display))) | |
bdda3754 JB |
250 | \f |
251 | ;;;; Associating face names (symbols) with their face vectors. | |
252 | ||
66a5c2c6 JB |
253 | (defvar global-face-data nil |
254 | "Internal data for face support functions. Not for external use. | |
255 | This is an alist associating face names with the default values for | |
256 | their parameters. Newly created frames get their data from here.") | |
257 | ||
bdda3754 JB |
258 | (defun face-list () |
259 | "Returns a list of all defined face names." | |
260 | (mapcar 'car global-face-data)) | |
261 | ||
262 | (defun internal-find-face (name &optional frame) | |
263 | "Retrieve the face named NAME. Return nil if there is no such face. | |
264 | If the optional argument FRAME is given, this gets the face NAME for | |
265 | that frame; otherwise, it uses the selected frame. | |
266 | If FRAME is the symbol t, then the global, non-frame face is returned. | |
267 | If NAME is already a face, it is simply returned." | |
268 | (if (and (eq frame t) (not (symbolp name))) | |
269 | (setq name (face-name name))) | |
270 | (if (symbolp name) | |
271 | (cdr (assq name | |
272 | (if (eq frame t) | |
273 | global-face-data | |
274 | (frame-face-alist (or frame (selected-frame)))))) | |
275 | (internal-check-face name) | |
276 | name)) | |
277 | ||
278 | (defun internal-get-face (name &optional frame) | |
279 | "Retrieve the face named NAME; error if there is none. | |
280 | If the optional argument FRAME is given, this gets the face NAME for | |
281 | that frame; otherwise, it uses the selected frame. | |
282 | If FRAME is the symbol t, then the global, non-frame face is returned. | |
283 | If NAME is already a face, it is simply returned." | |
284 | (or (internal-find-face name frame) | |
285 | (internal-check-face name))) | |
286 | ||
287 | ||
288 | (defun internal-set-face-1 (face name value index frame) | |
289 | (let ((inhibit-quit t)) | |
290 | (if (null frame) | |
291 | (let ((frames (frame-list))) | |
292 | (while frames | |
293 | (internal-set-face-1 (face-name face) name value index (car frames)) | |
294 | (setq frames (cdr frames))) | |
295 | (aset (internal-get-face (if (symbolp face) face (face-name face)) t) | |
296 | index value) | |
297 | value) | |
298 | (or (eq frame t) | |
299 | (set-face-attribute-internal (face-id face) name value frame)) | |
300 | (aset (internal-get-face face frame) index value)))) | |
301 | ||
302 | ||
303 | (defun read-face-name (prompt) | |
304 | (let (face) | |
305 | (while (= (length face) 0) | |
306 | (setq face (completing-read prompt | |
307 | (mapcar '(lambda (x) (list (symbol-name x))) | |
308 | (face-list)) | |
309 | nil t))) | |
310 | (intern face))) | |
311 | ||
312 | (defun internal-face-interactive (what &optional bool) | |
313 | (let* ((fn (intern (concat "face-" what))) | |
314 | (prompt (concat "Set " what " of face")) | |
315 | (face (read-face-name (concat prompt ": "))) | |
316 | (default (if (fboundp fn) | |
317 | (or (funcall fn face (selected-frame)) | |
318 | (funcall fn 'default (selected-frame))))) | |
319 | (value (if bool | |
320 | (y-or-n-p (concat "Should face " (symbol-name face) | |
321 | " be " bool "? ")) | |
322 | (read-string (concat prompt " " (symbol-name face) " to: ") | |
323 | default)))) | |
324 | (list face (if (equal value "") nil value)))) | |
325 | ||
326 | ||
465fceed ER |
327 | |
328 | (defun make-face (name) | |
329 | "Define a new FACE on all frames. | |
330 | You can modify the font, color, etc of this face with the set-face- functions. | |
331 | If the face already exists, it is unmodified." | |
19fac299 | 332 | (interactive "SMake face: ") |
465fceed ER |
333 | (or (internal-find-face name) |
334 | (let ((face (make-vector 8 nil))) | |
335 | (aset face 0 'face) | |
336 | (aset face 1 name) | |
337 | (let* ((frames (frame-list)) | |
338 | (inhibit-quit t) | |
339 | (id (internal-next-face-id))) | |
340 | (make-face-internal id) | |
341 | (aset face 2 id) | |
342 | (while frames | |
343 | (set-frame-face-alist (car frames) | |
344 | (cons (cons name (copy-sequence face)) | |
345 | (frame-face-alist (car frames)))) | |
346 | (setq frames (cdr frames))) | |
347 | (setq global-face-data (cons (cons name face) global-face-data))) | |
348 | ;; when making a face after frames already exist | |
349 | (if (eq window-system 'x) | |
350 | (make-face-x-resource-internal face)) | |
33af44e8 BG |
351 | ;; add to menu |
352 | (if (fboundp 'facemenu-add-new-face) | |
353 | (facemenu-add-new-face name)) | |
7ee29ed8 RS |
354 | face)) |
355 | name) | |
465fceed ER |
356 | |
357 | ;; Fill in a face by default based on X resources, for all existing frames. | |
358 | ;; This has to be done when a new face is made. | |
359 | (defun make-face-x-resource-internal (face &optional frame set-anyway) | |
360 | (cond ((null frame) | |
361 | (let ((frames (frame-list))) | |
362 | (while frames | |
586ab698 RS |
363 | (if (eq (framep (car frames)) 'x) |
364 | (make-face-x-resource-internal (face-name face) | |
365 | (car frames) set-anyway)) | |
465fceed ER |
366 | (setq frames (cdr frames))))) |
367 | (t | |
368 | (setq face (internal-get-face (face-name face) frame)) | |
369 | ;; | |
370 | ;; These are things like "attributeForeground" instead of simply | |
371 | ;; "foreground" because people tend to do things like "*foreground", | |
372 | ;; which would cause all faces to be fully qualified, making faces | |
373 | ;; inherit attributes in a non-useful way. So we've made them slightly | |
374 | ;; less obvious to specify in order to make them work correctly in | |
375 | ;; more random environments. | |
376 | ;; | |
377 | ;; I think these should be called "face.faceForeground" instead of | |
378 | ;; "face.attributeForeground", but they're the way they are for | |
379 | ;; hysterical reasons. | |
380 | ;; | |
381 | (let* ((name (symbol-name (face-name face))) | |
382 | (fn (or (x-get-resource (concat name ".attributeFont") | |
383 | "Face.AttributeFont") | |
384 | (and set-anyway (face-font face)))) | |
385 | (fg (or (x-get-resource (concat name ".attributeForeground") | |
386 | "Face.AttributeForeground") | |
387 | (and set-anyway (face-foreground face)))) | |
388 | (bg (or (x-get-resource (concat name ".attributeBackground") | |
389 | "Face.AttributeBackground") | |
390 | (and set-anyway (face-background face)))) | |
72418504 RS |
391 | (bgp (or (x-get-resource (concat name ".attributeStipple") |
392 | "Face.AttributeStipple") | |
393 | (x-get-resource (concat name ".attributeBackgroundPixmap") | |
394 | "Face.AttributeBackgroundPixmap") | |
395 | (and set-anyway (face-stipple face)))) | |
69718e9d RS |
396 | (ulp (let ((resource (x-get-resource |
397 | (concat name ".attributeUnderline") | |
398 | "Face.AttributeUnderline"))) | |
399 | (if resource | |
400 | (member (downcase resource) '("on" "true")) | |
401 | (and set-anyway (face-underline-p face))))) | |
465fceed ER |
402 | ) |
403 | (if fn | |
404 | (condition-case () | |
19deb21e RS |
405 | (cond ((string= fn "italic") |
406 | (make-face-italic face)) | |
407 | ((string= fn "bold") | |
408 | (make-face-bold face)) | |
409 | ((string= fn "bold-italic") | |
410 | (make-face-bold-italic face)) | |
411 | (t | |
412 | (set-face-font face fn frame))) | |
413 | (error | |
414 | (if (member fn '("italic" "bold" "bold-italic")) | |
415 | (message "no %s version found for face `%s'" fn name) | |
416 | (message "font `%s' not found for face `%s'" fn name))))) | |
465fceed ER |
417 | (if fg |
418 | (condition-case () | |
419 | (set-face-foreground face fg frame) | |
420 | (error (message "color `%s' not allocated for face `%s'" fg name)))) | |
421 | (if bg | |
422 | (condition-case () | |
423 | (set-face-background face bg frame) | |
424 | (error (message "color `%s' not allocated for face `%s'" bg name)))) | |
72418504 RS |
425 | (if bgp |
426 | (condition-case () | |
427 | (set-face-stipple face bgp frame) | |
428 | (error (message "pixmap `%s' not found for face `%s'" bgp name)))) | |
465fceed ER |
429 | (if (or ulp set-anyway) |
430 | (set-face-underline-p face ulp frame)) | |
431 | ))) | |
432 | face) | |
433 | ||
2f2ddd1e RS |
434 | (defun copy-face (old-face new-face &optional frame new-frame) |
435 | "Define a face just like OLD-FACE, with name NEW-FACE. | |
436 | If NEW-FACE already exists as a face, it is modified to be like OLD-FACE. | |
437 | If it doesn't already exist, it is created. | |
438 | ||
439 | If the optional argument FRAME is given as a frame, | |
440 | NEW-FACE is changed on FRAME only. | |
441 | If FRAME is t, the frame-independent default specification for OLD-FACE | |
442 | is copied to NEW-FACE. | |
443 | If FRAME is nil, copying is done for the frame-independent defaults | |
444 | and for each existing frame. | |
710e7005 RS |
445 | If the optional fourth argument NEW-FRAME is given, |
446 | copy the information from face OLD-FACE on frame FRAME | |
2f2ddd1e | 447 | to NEW-FACE on frame NEW-FRAME." |
710e7005 | 448 | (or new-frame (setq new-frame frame)) |
da41135a | 449 | (let ((inhibit-quit t)) |
465fceed ER |
450 | (if (null frame) |
451 | (let ((frames (frame-list))) | |
452 | (while frames | |
2f2ddd1e | 453 | (copy-face old-face new-face (car frames)) |
465fceed | 454 | (setq frames (cdr frames))) |
2f2ddd1e | 455 | (copy-face old-face new-face t)) |
da41135a KH |
456 | (setq old-face (internal-get-face old-face frame)) |
457 | (setq new-face (or (internal-find-face new-face new-frame) | |
458 | (make-face new-face))) | |
52267b56 RS |
459 | (condition-case nil |
460 | ;; A face that has a global symbolic font modifier such as `bold' | |
461 | ;; might legitimately get an error here. | |
462 | ;; Use the frame's default font in that case. | |
463 | (set-face-font new-face (face-font old-face frame) new-frame) | |
464 | (error | |
465 | (set-face-font new-face nil new-frame))) | |
710e7005 RS |
466 | (set-face-foreground new-face (face-foreground old-face frame) new-frame) |
467 | (set-face-background new-face (face-background old-face frame) new-frame) | |
72418504 RS |
468 | (set-face-stipple new-face |
469 | (face-stipple old-face frame) | |
470 | new-frame) | |
465fceed | 471 | (set-face-underline-p new-face (face-underline-p old-face frame) |
710e7005 | 472 | new-frame)) |
465fceed ER |
473 | new-face)) |
474 | ||
475 | (defun face-equal (face1 face2 &optional frame) | |
ade516a1 | 476 | "True if the faces FACE1 and FACE2 display in the same way." |
465fceed ER |
477 | (setq face1 (internal-get-face face1 frame) |
478 | face2 (internal-get-face face2 frame)) | |
479 | (and (equal (face-foreground face1 frame) (face-foreground face2 frame)) | |
480 | (equal (face-background face1 frame) (face-background face2 frame)) | |
481 | (equal (face-font face1 frame) (face-font face2 frame)) | |
ae0249df | 482 | (eq (face-underline-p face1 frame) (face-underline-p face2 frame)) |
72418504 RS |
483 | (equal (face-stipple face1 frame) |
484 | (face-stipple face2 frame)))) | |
465fceed ER |
485 | |
486 | (defun face-differs-from-default-p (face &optional frame) | |
487 | "True if face FACE displays differently from the default face, on FRAME. | |
488 | A face is considered to be ``the same'' as the default face if it is | |
489 | actually specified in the same way (equivalent fonts, etc) or if it is | |
490 | fully unspecified, and thus inherits the attributes of any face it | |
93d6fcef RS |
491 | is displayed on top of. |
492 | ||
493 | The optional argument FRAME specifies which frame to test; | |
494 | if FRAME is t, test the default for new frames. | |
495 | If FRAME is nil or omitted, test the selected frame." | |
465fceed ER |
496 | (let ((default (internal-get-face 'default frame))) |
497 | (setq face (internal-get-face face frame)) | |
498 | (not (and (or (equal (face-foreground default frame) | |
499 | (face-foreground face frame)) | |
500 | (null (face-foreground face frame))) | |
501 | (or (equal (face-background default frame) | |
502 | (face-background face frame)) | |
503 | (null (face-background face frame))) | |
504 | (or (equal (face-font default frame) (face-font face frame)) | |
505 | (null (face-font face frame))) | |
72418504 RS |
506 | (or (equal (face-stipple default frame) |
507 | (face-stipple face frame)) | |
508 | (null (face-stipple face frame))) | |
465fceed ER |
509 | (equal (face-underline-p default frame) |
510 | (face-underline-p face frame)) | |
511 | )))) | |
512 | ||
93d6fcef RS |
513 | (defun face-nontrivial-p (face &optional frame) |
514 | "True if face FACE has some non-nil attribute. | |
515 | The optional argument FRAME specifies which frame to test; | |
516 | if FRAME is t, test the default for new frames. | |
517 | If FRAME is nil or omitted, test the selected frame." | |
518 | (setq face (internal-get-face face frame)) | |
519 | (or (face-foreground face frame) | |
520 | (face-background face frame) | |
521 | (face-font face frame) | |
522 | (face-stipple face frame) | |
523 | (face-underline-p face frame))) | |
524 | ||
465fceed ER |
525 | |
526 | (defun invert-face (face &optional frame) | |
527 | "Swap the foreground and background colors of face FACE. | |
528 | If the face doesn't specify both foreground and background, then | |
8494bbf1 | 529 | set its foreground and background to the default background and foreground." |
465fceed ER |
530 | (interactive (list (read-face-name "Invert face: "))) |
531 | (setq face (internal-get-face face frame)) | |
532 | (let ((fg (face-foreground face frame)) | |
533 | (bg (face-background face frame))) | |
534 | (if (or fg bg) | |
535 | (progn | |
536 | (set-face-foreground face bg frame) | |
537 | (set-face-background face fg frame)) | |
8494bbf1 RS |
538 | (set-face-foreground face (or (face-background 'default frame) |
539 | (cdr (assq 'background-color (frame-parameters frame)))) | |
540 | frame) | |
541 | (set-face-background face (or (face-foreground 'default frame) | |
542 | (cdr (assq 'foreground-color (frame-parameters frame)))) | |
543 | frame))) | |
465fceed ER |
544 | face) |
545 | ||
546 | ||
547 | (defun internal-try-face-font (face font &optional frame) | |
548 | "Like set-face-font, but returns nil on failure instead of an error." | |
549 | (condition-case () | |
550 | (set-face-font face font frame) | |
551 | (error nil))) | |
465fceed ER |
552 | \f |
553 | ;; Manipulating font names. | |
554 | ||
555 | (defconst x-font-regexp nil) | |
556 | (defconst x-font-regexp-head nil) | |
557 | (defconst x-font-regexp-weight nil) | |
558 | (defconst x-font-regexp-slant nil) | |
559 | ||
021ca129 KH |
560 | (defconst x-font-regexp-weight-subnum 1) |
561 | (defconst x-font-regexp-slant-subnum 2) | |
562 | (defconst x-font-regexp-swidth-subnum 3) | |
563 | (defconst x-font-regexp-adstyle-subnum 4) | |
564 | ||
465fceed ER |
565 | ;;; Regexps matching font names in "Host Portable Character Representation." |
566 | ;;; | |
567 | (let ((- "[-?]") | |
568 | (foundry "[^-]+") | |
569 | (family "[^-]+") | |
570 | (weight "\\(bold\\|demibold\\|medium\\)") ; 1 | |
571 | ; (weight\? "\\(\\*\\|bold\\|demibold\\|medium\\|\\)") ; 1 | |
572 | (weight\? "\\([^-]*\\)") ; 1 | |
573 | (slant "\\([ior]\\)") ; 2 | |
574 | ; (slant\? "\\([ior?*]?\\)") ; 2 | |
575 | (slant\? "\\([^-]?\\)") ; 2 | |
576 | ; (swidth "\\(\\*\\|normal\\|semicondensed\\|\\)") ; 3 | |
577 | (swidth "\\([^-]*\\)") ; 3 | |
578 | ; (adstyle "\\(\\*\\|sans\\|\\)") ; 4 | |
c8787b81 | 579 | (adstyle "\\([^-]*\\)") ; 4 |
465fceed ER |
580 | (pixelsize "[0-9]+") |
581 | (pointsize "[0-9][0-9]+") | |
582 | (resx "[0-9][0-9]+") | |
583 | (resy "[0-9][0-9]+") | |
584 | (spacing "[cmp?*]") | |
585 | (avgwidth "[0-9]+") | |
586 | (registry "[^-]+") | |
587 | (encoding "[^-]+") | |
588 | ) | |
589 | (setq x-font-regexp | |
590 | (concat "\\`\\*?[-?*]" | |
591 | foundry - family - weight\? - slant\? - swidth - adstyle - | |
e20d641f RS |
592 | pixelsize - pointsize - resx - resy - spacing - avgwidth - |
593 | registry - encoding "\\*?\\'" | |
465fceed ER |
594 | )) |
595 | (setq x-font-regexp-head | |
596 | (concat "\\`[-?*]" foundry - family - weight\? - slant\? | |
597 | "\\([-*?]\\|\\'\\)")) | |
598 | (setq x-font-regexp-slant (concat - slant -)) | |
599 | (setq x-font-regexp-weight (concat - weight -)) | |
600 | nil) | |
601 | ||
281dc1c2 JB |
602 | (defun x-resolve-font-name (pattern &optional face frame) |
603 | "Return a font name matching PATTERN. | |
604 | All wildcards in PATTERN become substantiated. | |
10d89673 JB |
605 | If PATTERN is nil, return the name of the frame's base font, which never |
606 | contains wildcards. | |
e17dbede RS |
607 | Given optional arguments FACE and FRAME, return a font which is |
608 | also the same size as FACE on FRAME, or fail." | |
14e6867c RS |
609 | (or (symbolp face) |
610 | (setq face (face-name face))) | |
611 | (and (eq frame t) | |
612 | (setq frame nil)) | |
10d89673 | 613 | (if pattern |
8db93e45 RS |
614 | ;; Note that x-list-fonts has code to handle a face with nil as its font. |
615 | (let ((fonts (x-list-fonts pattern face frame))) | |
10d89673 JB |
616 | (or fonts |
617 | (if face | |
962a60aa RS |
618 | (if (string-match "\\*" pattern) |
619 | (if (null (face-font face)) | |
620 | (error "No matching fonts are the same height as the frame default font") | |
621 | (error "No matching fonts are the same height as face `%s'" face)) | |
622 | (if (null (face-font face)) | |
623 | (error "Height of font `%s' doesn't match the frame default font" | |
624 | pattern) | |
625 | (error "Height of font `%s' doesn't match face `%s'" | |
626 | pattern face))) | |
7cf6fac1 | 627 | (error "No fonts match `%s'" pattern))) |
10d89673 JB |
628 | (car fonts)) |
629 | (cdr (assq 'font (frame-parameters (selected-frame)))))) | |
281dc1c2 | 630 | |
465fceed | 631 | (defun x-frob-font-weight (font which) |
ef436392 KH |
632 | (cond ((string-match x-font-regexp font) |
633 | (concat (substring font 0 (match-beginning x-font-regexp-weight-subnum)) | |
634 | which | |
635 | (substring font (match-end x-font-regexp-weight-subnum) | |
636 | (match-beginning x-font-regexp-adstyle-subnum)) | |
637 | ;; Replace the ADD_STYLE_NAME field with * | |
638 | ;; because the info in it may not be the same | |
639 | ;; for related fonts. | |
640 | "*" | |
641 | (substring font (match-end x-font-regexp-adstyle-subnum)))) | |
642 | ((or (string-match x-font-regexp-head font) | |
643 | (string-match x-font-regexp-weight font)) | |
644 | (concat (substring font 0 (match-beginning 1)) which | |
645 | (substring font (match-end 1)))))) | |
465fceed ER |
646 | |
647 | (defun x-frob-font-slant (font which) | |
ef436392 KH |
648 | (cond ((string-match x-font-regexp font) |
649 | (concat (substring font 0 (match-beginning x-font-regexp-slant-subnum)) | |
650 | which | |
651 | (substring font (match-end x-font-regexp-slant-subnum) | |
652 | (match-beginning x-font-regexp-adstyle-subnum)) | |
653 | ;; Replace the ADD_STYLE_NAME field with * | |
654 | ;; because the info in it may not be the same | |
655 | ;; for related fonts. | |
656 | "*" | |
657 | (substring font (match-end x-font-regexp-adstyle-subnum)))) | |
658 | ((or (string-match x-font-regexp-head font) | |
659 | (string-match x-font-regexp-slant font)) | |
465fceed | 660 | (concat (substring font 0 (match-beginning 1)) which |
ef436392 | 661 | (substring font (match-end 1)))))) |
465fceed ER |
662 | |
663 | (defun x-make-font-bold (font) | |
f3f31ccf RS |
664 | "Given an X font specification, make a bold version of it. |
665 | If that can't be done, return nil." | |
465fceed ER |
666 | (x-frob-font-weight font "bold")) |
667 | ||
668 | (defun x-make-font-demibold (font) | |
f3f31ccf RS |
669 | "Given an X font specification, make a demibold version of it. |
670 | If that can't be done, return nil." | |
465fceed ER |
671 | (x-frob-font-weight font "demibold")) |
672 | ||
673 | (defun x-make-font-unbold (font) | |
f3f31ccf RS |
674 | "Given an X font specification, make a non-bold version of it. |
675 | If that can't be done, return nil." | |
465fceed ER |
676 | (x-frob-font-weight font "medium")) |
677 | ||
678 | (defun x-make-font-italic (font) | |
f3f31ccf RS |
679 | "Given an X font specification, make an italic version of it. |
680 | If that can't be done, return nil." | |
465fceed ER |
681 | (x-frob-font-slant font "i")) |
682 | ||
683 | (defun x-make-font-oblique (font) ; you say tomayto... | |
f3f31ccf RS |
684 | "Given an X font specification, make an oblique version of it. |
685 | If that can't be done, return nil." | |
465fceed ER |
686 | (x-frob-font-slant font "o")) |
687 | ||
688 | (defun x-make-font-unitalic (font) | |
f3f31ccf RS |
689 | "Given an X font specification, make a non-italic version of it. |
690 | If that can't be done, return nil." | |
465fceed | 691 | (x-frob-font-slant font "r")) |
465fceed ER |
692 | \f |
693 | ;;; non-X-specific interface | |
694 | ||
bb9a81fc | 695 | (defun make-face-bold (face &optional frame noerror) |
465fceed | 696 | "Make the font of the given face be bold, if possible. |
bb9a81fc | 697 | If NOERROR is non-nil, return nil on failure." |
465fceed | 698 | (interactive (list (read-face-name "Make which face bold: "))) |
534dbc97 | 699 | (if (and (eq frame t) (listp (face-font face t))) |
f3f31ccf RS |
700 | (set-face-font face (if (memq 'italic (face-font face t)) |
701 | '(bold italic) '(bold)) | |
702 | t) | |
488bedff | 703 | (let (font) |
f3f31ccf RS |
704 | (if (null frame) |
705 | (let ((frames (frame-list))) | |
706 | ;; Make this face bold in global-face-data. | |
707 | (make-face-bold face t noerror) | |
708 | ;; Make this face bold in each frame. | |
709 | (while frames | |
710 | (make-face-bold face (car frames) noerror) | |
711 | (setq frames (cdr frames)))) | |
712 | (setq face (internal-get-face face frame)) | |
713 | (setq font (or (face-font face frame) | |
714 | (face-font face t))) | |
715 | (if (listp font) | |
716 | (setq font nil)) | |
717 | (setq font (or font | |
718 | (face-font 'default frame) | |
719 | (cdr (assq 'font (frame-parameters frame))))) | |
488bedff RS |
720 | (or (and font (make-face-bold-internal face frame font)) |
721 | ;; We failed to find a bold version of the font. | |
722 | noerror | |
723 | (error "No bold version of %S" font)))))) | |
f3f31ccf | 724 | |
4b3203d9 RS |
725 | (defun make-face-bold-internal (face frame font) |
726 | (let (f2) | |
727 | (or (and (setq f2 (x-make-font-bold font)) | |
728 | (internal-try-face-font face f2 frame)) | |
729 | (and (setq f2 (x-make-font-demibold font)) | |
730 | (internal-try-face-font face f2 frame))))) | |
bb9a81fc JB |
731 | |
732 | (defun make-face-italic (face &optional frame noerror) | |
465fceed | 733 | "Make the font of the given face be italic, if possible. |
bb9a81fc | 734 | If NOERROR is non-nil, return nil on failure." |
465fceed | 735 | (interactive (list (read-face-name "Make which face italic: "))) |
534dbc97 | 736 | (if (and (eq frame t) (listp (face-font face t))) |
f3f31ccf RS |
737 | (set-face-font face (if (memq 'bold (face-font face t)) |
738 | '(bold italic) '(italic)) | |
739 | t) | |
488bedff | 740 | (let (font) |
f3f31ccf RS |
741 | (if (null frame) |
742 | (let ((frames (frame-list))) | |
743 | ;; Make this face italic in global-face-data. | |
744 | (make-face-italic face t noerror) | |
745 | ;; Make this face italic in each frame. | |
746 | (while frames | |
747 | (make-face-italic face (car frames) noerror) | |
748 | (setq frames (cdr frames)))) | |
749 | (setq face (internal-get-face face frame)) | |
750 | (setq font (or (face-font face frame) | |
751 | (face-font face t))) | |
752 | (if (listp font) | |
753 | (setq font nil)) | |
754 | (setq font (or font | |
755 | (face-font 'default frame) | |
756 | (cdr (assq 'font (frame-parameters frame))))) | |
488bedff RS |
757 | (or (and font (make-face-italic-internal face frame font)) |
758 | ;; We failed to find an italic version of the font. | |
759 | noerror | |
760 | (error "No italic version of %S" font)))))) | |
f3f31ccf | 761 | |
4b3203d9 RS |
762 | (defun make-face-italic-internal (face frame font) |
763 | (let (f2) | |
764 | (or (and (setq f2 (x-make-font-italic font)) | |
765 | (internal-try-face-font face f2 frame)) | |
766 | (and (setq f2 (x-make-font-oblique font)) | |
767 | (internal-try-face-font face f2 frame))))) | |
bb9a81fc JB |
768 | |
769 | (defun make-face-bold-italic (face &optional frame noerror) | |
465fceed | 770 | "Make the font of the given face be bold and italic, if possible. |
bb9a81fc | 771 | If NOERROR is non-nil, return nil on failure." |
465fceed | 772 | (interactive (list (read-face-name "Make which face bold-italic: "))) |
534dbc97 | 773 | (if (and (eq frame t) (listp (face-font face t))) |
f3f31ccf | 774 | (set-face-font face '(bold italic) t) |
488bedff | 775 | (let (font) |
f3f31ccf RS |
776 | (if (null frame) |
777 | (let ((frames (frame-list))) | |
778 | ;; Make this face bold-italic in global-face-data. | |
779 | (make-face-bold-italic face t noerror) | |
780 | ;; Make this face bold in each frame. | |
781 | (while frames | |
782 | (make-face-bold-italic face (car frames) noerror) | |
783 | (setq frames (cdr frames)))) | |
784 | (setq face (internal-get-face face frame)) | |
785 | (setq font (or (face-font face frame) | |
786 | (face-font face t))) | |
787 | (if (listp font) | |
788 | (setq font nil)) | |
789 | (setq font (or font | |
790 | (face-font 'default frame) | |
791 | (cdr (assq 'font (frame-parameters frame))))) | |
488bedff RS |
792 | (or (and font (make-face-bold-italic-internal face frame font)) |
793 | ;; We failed to find a bold italic version. | |
794 | noerror | |
795 | (error "No bold italic version of %S" font)))))) | |
f3f31ccf | 796 | |
4b3203d9 | 797 | (defun make-face-bold-italic-internal (face frame font) |
f3f31ccf RS |
798 | (let (f2 f3) |
799 | (or (and (setq f2 (x-make-font-italic font)) | |
800 | (not (equal font f2)) | |
801 | (setq f3 (x-make-font-bold f2)) | |
802 | (not (equal f2 f3)) | |
803 | (internal-try-face-font face f3 frame)) | |
804 | (and (setq f2 (x-make-font-oblique font)) | |
805 | (not (equal font f2)) | |
806 | (setq f3 (x-make-font-bold f2)) | |
807 | (not (equal f2 f3)) | |
808 | (internal-try-face-font face f3 frame)) | |
809 | (and (setq f2 (x-make-font-italic font)) | |
810 | (not (equal font f2)) | |
811 | (setq f3 (x-make-font-demibold f2)) | |
812 | (not (equal f2 f3)) | |
813 | (internal-try-face-font face f3 frame)) | |
814 | (and (setq f2 (x-make-font-oblique font)) | |
815 | (not (equal font f2)) | |
816 | (setq f3 (x-make-font-demibold f2)) | |
817 | (not (equal f2 f3)) | |
818 | (internal-try-face-font face f3 frame))))) | |
bb9a81fc JB |
819 | |
820 | (defun make-face-unbold (face &optional frame noerror) | |
465fceed | 821 | "Make the font of the given face be non-bold, if possible. |
bb9a81fc | 822 | If NOERROR is non-nil, return nil on failure." |
465fceed | 823 | (interactive (list (read-face-name "Make which face non-bold: "))) |
534dbc97 | 824 | (if (and (eq frame t) (listp (face-font face t))) |
f3f31ccf RS |
825 | (set-face-font face (if (memq 'italic (face-font face t)) |
826 | '(italic) nil) | |
827 | t) | |
488bedff | 828 | (let (font font1) |
f3f31ccf RS |
829 | (if (null frame) |
830 | (let ((frames (frame-list))) | |
831 | ;; Make this face unbold in global-face-data. | |
832 | (make-face-unbold face t noerror) | |
833 | ;; Make this face unbold in each frame. | |
834 | (while frames | |
835 | (make-face-unbold face (car frames) noerror) | |
836 | (setq frames (cdr frames)))) | |
837 | (setq face (internal-get-face face frame)) | |
838 | (setq font1 (or (face-font face frame) | |
839 | (face-font face t))) | |
840 | (if (listp font1) | |
841 | (setq font1 nil)) | |
842 | (setq font1 (or font1 | |
843 | (face-font 'default frame) | |
844 | (cdr (assq 'font (frame-parameters frame))))) | |
96616c04 | 845 | (setq font (and font1 (x-make-font-unbold font1))) |
488bedff RS |
846 | (or (if font (internal-try-face-font face font frame)) |
847 | noerror | |
848 | (error "No unbold version of %S" font1)))))) | |
bb9a81fc JB |
849 | |
850 | (defun make-face-unitalic (face &optional frame noerror) | |
465fceed | 851 | "Make the font of the given face be non-italic, if possible. |
bb9a81fc | 852 | If NOERROR is non-nil, return nil on failure." |
465fceed | 853 | (interactive (list (read-face-name "Make which face non-italic: "))) |
534dbc97 | 854 | (if (and (eq frame t) (listp (face-font face t))) |
f3f31ccf RS |
855 | (set-face-font face (if (memq 'bold (face-font face t)) |
856 | '(bold) nil) | |
857 | t) | |
488bedff | 858 | (let (font font1) |
f3f31ccf RS |
859 | (if (null frame) |
860 | (let ((frames (frame-list))) | |
861 | ;; Make this face unitalic in global-face-data. | |
862 | (make-face-unitalic face t noerror) | |
863 | ;; Make this face unitalic in each frame. | |
864 | (while frames | |
865 | (make-face-unitalic face (car frames) noerror) | |
866 | (setq frames (cdr frames)))) | |
867 | (setq face (internal-get-face face frame)) | |
868 | (setq font1 (or (face-font face frame) | |
869 | (face-font face t))) | |
870 | (if (listp font1) | |
871 | (setq font1 nil)) | |
872 | (setq font1 (or font1 | |
873 | (face-font 'default frame) | |
874 | (cdr (assq 'font (frame-parameters frame))))) | |
96616c04 | 875 | (setq font (and font1 (x-make-font-unitalic font1))) |
488bedff RS |
876 | (or (if font (internal-try-face-font face font frame)) |
877 | noerror | |
878 | (error "No unitalic version of %S" font1)))))) | |
465fceed | 879 | \f |
710e7005 RS |
880 | (defvar list-faces-sample-text |
881 | "abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
882 | "*Text string to display as the sample text for `list-faces-display'.") | |
883 | ||
884 | ;; The name list-faces would be more consistent, but let's avoid a conflict | |
885 | ;; with Lucid, which uses that name differently. | |
886 | (defun list-faces-display () | |
887 | "List all faces, using the same sample text in each. | |
888 | The sample text is a string that comes from the variable | |
889 | `list-faces-sample-text'. | |
890 | ||
891 | It is possible to give a particular face name different appearances in | |
892 | different frames. This command shows the appearance in the | |
893 | selected frame." | |
894 | (interactive) | |
895 | (let ((faces (sort (face-list) (function string-lessp))) | |
896 | (face nil) | |
897 | (frame (selected-frame)) | |
898 | disp-frame window) | |
899 | (with-output-to-temp-buffer "*Faces*" | |
900 | (save-excursion | |
901 | (set-buffer standard-output) | |
902 | (setq truncate-lines t) | |
903 | (while faces | |
904 | (setq face (car faces)) | |
905 | (setq faces (cdr faces)) | |
906 | (insert (format "%25s " (symbol-name face))) | |
907 | (let ((beg (point))) | |
908 | (insert list-faces-sample-text) | |
909 | (insert "\n") | |
23b04eac RS |
910 | (put-text-property beg (1- (point)) 'face face) |
911 | ;; If the sample text has multiple lines, line up all of them. | |
912 | (goto-char beg) | |
913 | (forward-line 1) | |
914 | (while (not (eobp)) | |
915 | (insert " ") | |
916 | (forward-line 1)))) | |
710e7005 RS |
917 | (goto-char (point-min)))) |
918 | ;; If the *Faces* buffer appears in a different frame, | |
919 | ;; copy all the face definitions from FRAME, | |
920 | ;; so that the display will reflect the frame that was selected. | |
921 | (setq window (get-buffer-window (get-buffer "*Faces*") t)) | |
922 | (setq disp-frame (if window (window-frame window) | |
923 | (car (frame-list)))) | |
924 | (or (eq frame disp-frame) | |
925 | (let ((faces (face-list))) | |
926 | (while faces | |
927 | (copy-face (car faces) (car faces) frame disp-frame) | |
928 | (setq faces (cdr faces))))))) | |
19deb21e RS |
929 | |
930 | (defun describe-face (face) | |
931 | "Display the properties of face FACE." | |
932 | (interactive (list (read-face-name "Describe face: "))) | |
933 | (with-output-to-temp-buffer "*Help*" | |
934 | (princ "Properties of face `") | |
935 | (princ (face-name face)) | |
936 | (princ "':") (terpri) | |
937 | (princ "Foreground: ") (princ (face-foreground face)) (terpri) | |
938 | (princ "Background: ") (princ (face-background face)) (terpri) | |
939 | (princ " Font: ") (princ (face-font face)) (terpri) | |
940 | (princ "Underlined: ") (princ (if (face-underline-p face) "yes" "no")) (terpri) | |
941 | (princ " Stipple: ") (princ (or (face-stipple face) "none")))) | |
710e7005 | 942 | \f |
19ae9866 RS |
943 | ;;; Make the standard faces. |
944 | ;;; The C code knows the default and modeline faces as faces 0 and 1, | |
945 | ;;; so they must be the first two faces made. | |
e09c52a8 | 946 | (defun face-initialize () |
465fceed | 947 | (make-face 'default) |
ebea97d8 | 948 | (make-face 'modeline) |
465fceed | 949 | (make-face 'highlight) |
19ae9866 | 950 | |
465fceed | 951 | ;; These aren't really special in any way, but they're nice to have around. |
19ae9866 | 952 | |
465fceed ER |
953 | (make-face 'bold) |
954 | (make-face 'italic) | |
955 | (make-face 'bold-italic) | |
578d09a6 | 956 | (make-face 'region) |
e09c52a8 | 957 | (make-face 'secondary-selection) |
f4b9e76b | 958 | (make-face 'underline) |
e09c52a8 | 959 | |
578d09a6 | 960 | (setq region-face (face-id 'region)) |
8494bbf1 | 961 | |
19ae9866 RS |
962 | ;; Specify the global properties of these faces |
963 | ;; so they will come out right on new frames. | |
964 | ||
965 | (make-face-bold 'bold t) | |
966 | (make-face-italic 'italic t) | |
967 | (make-face-bold-italic 'bold-italic t) | |
968 | ||
969 | (set-face-background 'highlight '("darkseagreen2" "green" t) t) | |
566b0ad2 | 970 | (set-face-background 'region '("gray" underline) t) |
19ae9866 RS |
971 | (set-face-background 'secondary-selection '("paleturquoise" "green" t) t) |
972 | (set-face-background 'modeline '(t) t) | |
973 | (set-face-underline-p 'underline t t) | |
974 | ||
975 | ;; Set up the faces of all existing X Window frames | |
976 | ;; from those global properties, unless already set in a given frame. | |
977 | ||
e09c52a8 RS |
978 | (let ((frames (frame-list))) |
979 | (while frames | |
e17dbede | 980 | (if (not (memq (framep (car frames)) '(t nil))) |
19ae9866 RS |
981 | (let ((frame (car frames)) |
982 | (rest global-face-data)) | |
983 | (while rest | |
984 | (let ((face (car (car rest)))) | |
985 | (or (face-differs-from-default-p face) | |
986 | (face-fill-in face (cdr (car rest)) frame))) | |
987 | (setq rest (cdr rest))))) | |
e09c52a8 RS |
988 | (setq frames (cdr frames))))) |
989 | ||
465fceed | 990 | \f |
465fceed ER |
991 | ;; Like x-create-frame but also set up the faces. |
992 | ||
993 | (defun x-create-frame-with-faces (&optional parameters) | |
6e4aafdc KH |
994 | ;; Read this frame's geometry resource, if it has an explicit name, |
995 | ;; and put the specs into PARAMETERS. | |
996 | (let* ((name (or (cdr (assq 'name parameters)) | |
313b841c | 997 | (cdr (assq 'name default-frame-alist)))) |
6e4aafdc | 998 | (x-resource-name name) |
c0553327 | 999 | (res-geometry (if name (x-get-resource "geometry" "Geometry"))) |
6e4aafdc KH |
1000 | parsed) |
1001 | (if res-geometry | |
1002 | (progn | |
1003 | (setq parsed (x-parse-geometry res-geometry)) | |
1004 | ;; If the resource specifies a position, | |
1005 | ;; call the position and size "user-specified". | |
1006 | (if (or (assq 'top parsed) (assq 'left parsed)) | |
1007 | (setq parsed (cons '(user-position . t) | |
1008 | (cons '(user-size . t) parsed)))) | |
313b841c KH |
1009 | ;; Put the geometry parameters at the end. |
1010 | ;; Copy default-frame-alist so that they go after it. | |
1011 | (setq parameters (append parameters | |
1012 | default-frame-alist | |
1013 | parsed))))) | |
ef436392 KH |
1014 | (let (frame) |
1015 | (if (null global-face-data) | |
1016 | (setq frame (x-create-frame parameters)) | |
1017 | (let* ((visibility-spec (assq 'visibility parameters)) | |
1018 | (faces (copy-alist global-face-data)) | |
1019 | success | |
1020 | (rest faces)) | |
1021 | (setq frame (x-create-frame (cons '(visibility . nil) parameters))) | |
1022 | (unwind-protect | |
1023 | (progn | |
1024 | (set-frame-face-alist frame faces) | |
1025 | ||
1026 | (if (cdr (or (assq 'reverse parameters) | |
1027 | (assq 'reverse default-frame-alist) | |
1028 | (let ((resource (x-get-resource "reverseVideo" | |
1029 | "ReverseVideo"))) | |
1030 | (if resource | |
1031 | (cons nil (member (downcase resource) | |
1032 | '("on" "true"))))))) | |
1033 | (let* ((params (frame-parameters frame)) | |
1034 | (bg (cdr (assq 'foreground-color params))) | |
1035 | (fg (cdr (assq 'background-color params)))) | |
1036 | (modify-frame-parameters frame | |
1037 | (list (cons 'foreground-color fg) | |
1038 | (cons 'background-color bg))) | |
1039 | (if (equal bg (cdr (assq 'border-color params))) | |
1040 | (modify-frame-parameters frame | |
1041 | (list (cons 'border-color fg)))) | |
1042 | (if (equal bg (cdr (assq 'mouse-color params))) | |
1043 | (modify-frame-parameters frame | |
1044 | (list (cons 'mouse-color fg)))) | |
1045 | (if (equal bg (cdr (assq 'cursor-color params))) | |
1046 | (modify-frame-parameters frame | |
1047 | (list (cons 'cursor-color fg)))))) | |
1048 | ;; Copy the vectors that represent the faces. | |
1049 | ;; Also fill them in from X resources. | |
1050 | (while rest | |
1051 | (let ((global (cdr (car rest)))) | |
1052 | (setcdr (car rest) (vector 'face | |
1053 | (face-name (cdr (car rest))) | |
1054 | (face-id (cdr (car rest))) | |
1055 | nil nil nil nil nil)) | |
1056 | (face-fill-in (car (car rest)) global frame)) | |
1057 | (make-face-x-resource-internal (cdr (car rest)) frame t) | |
1058 | (setq rest (cdr rest))) | |
1059 | (if (null visibility-spec) | |
1060 | (make-frame-visible frame) | |
1061 | (modify-frame-parameters frame (list visibility-spec))) | |
1062 | (setq success t)) | |
1063 | (or success | |
1064 | (delete-frame frame))))) | |
1065 | ;; Set up the background-mode frame parameter | |
1066 | ;; so that programs can decide good ways of highlighting | |
1067 | ;; on this frame. | |
1068 | (let ((bg-resource (x-get-resource ".backgroundMode" | |
1069 | "BackgroundMode")) | |
82c028e0 | 1070 | (params (frame-parameters frame)) |
ef436392 KH |
1071 | (bg-mode)) |
1072 | (setq bg-mode | |
1073 | (cond (bg-resource (intern (downcase bg-resource))) | |
1074 | ((< (apply '+ (x-color-values | |
82c028e0 RS |
1075 | (cdr (assq 'background-color params)) |
1076 | frame)) | |
1077 | (/ (apply '+ (x-color-values "white" frame)) 3)) | |
ef436392 KH |
1078 | 'dark) |
1079 | (t 'light))) | |
1080 | (modify-frame-parameters frame | |
1081 | (list (cons 'background-mode bg-mode) | |
1082 | (cons 'display-type | |
1083 | (cond ((x-display-color-p frame) | |
1084 | 'color) | |
1085 | ((x-display-grayscale-p frame) | |
1086 | 'grayscale) | |
1087 | (t 'mono)))))) | |
1088 | frame)) | |
e09c52a8 | 1089 | |
9d52c8d3 RS |
1090 | ;; Update a frame's faces when we change its default font. |
1091 | (defun frame-update-faces (frame) | |
1092 | (let* ((faces global-face-data) | |
1093 | (rest faces)) | |
1094 | (while rest | |
1095 | (let* ((face (car (car rest))) | |
1096 | (font (face-font face t))) | |
1097 | (if (listp font) | |
1098 | (let ((bold (memq 'bold font)) | |
1099 | (italic (memq 'italic font))) | |
99fb9482 KH |
1100 | ;; Ignore any previous (string-valued) font, it might not even |
1101 | ;; be the right size anymore. | |
1102 | (set-face-font face nil frame) | |
9d52c8d3 RS |
1103 | (cond ((and bold italic) |
1104 | (make-face-bold-italic face frame t)) | |
1105 | (bold | |
1106 | (make-face-bold face frame t)) | |
1107 | (italic | |
1108 | (make-face-italic face frame t))))) | |
1109 | (setq rest (cdr rest))) | |
1110 | frame))) | |
1111 | ||
f16c38ae RS |
1112 | ;; Update the colors of FACE, after FRAME's own colors have been changed. |
1113 | ;; This applies only to faces with global color specifications | |
1114 | ;; that are not simple constants. | |
1115 | (defun frame-update-face-colors (frame) | |
1116 | (let ((faces global-face-data)) | |
1117 | (while faces | |
1118 | (condition-case nil | |
1119 | (let* ((data (cdr (car faces))) | |
1120 | (face (car (car faces))) | |
1121 | (foreground (face-foreground data)) | |
1122 | (background (face-background data))) | |
1123 | ;; If the global spec is a specific color, | |
1124 | ;; which doesn't depend on the frame's attributes, | |
1125 | ;; we don't need to recalculate it now. | |
1126 | (or (listp foreground) | |
1127 | (setq foreground nil)) | |
1128 | (or (listp background) | |
1129 | (setq background nil)) | |
1130 | ;; If we are going to frob this face at all, | |
1131 | ;; reinitialize it first. | |
1132 | (if (or foreground background) | |
1133 | (progn (set-face-foreground face nil frame) | |
1134 | (set-face-background face nil frame))) | |
1135 | (if foreground | |
1136 | (face-try-color-list 'set-face-foreground | |
1137 | face foreground frame)) | |
1138 | (if background | |
1139 | (face-try-color-list 'set-face-background | |
1140 | face background frame))) | |
1141 | (error nil)) | |
1142 | (setq faces (cdr faces))))) | |
1143 | ||
19ae9866 RS |
1144 | ;; Fill in the face FACE from frame-independent face data DATA. |
1145 | ;; DATA should be the non-frame-specific ("global") face vector | |
1146 | ;; for the face. FACE should be a face name or face object. | |
1147 | ;; FRAME is the frame to act on; it must be an actual frame, not nil or t. | |
1148 | (defun face-fill-in (face data frame) | |
1149 | (condition-case nil | |
1150 | (let ((foreground (face-foreground data)) | |
1151 | (background (face-background data)) | |
ca58b3ec KH |
1152 | (font (face-font data)) |
1153 | (stipple (face-stipple data))) | |
19ae9866 RS |
1154 | (set-face-underline-p face (face-underline-p data) frame) |
1155 | (if foreground | |
1156 | (face-try-color-list 'set-face-foreground | |
1157 | face foreground frame)) | |
1158 | (if background | |
1159 | (face-try-color-list 'set-face-background | |
1160 | face background frame)) | |
1161 | (if (listp font) | |
1162 | (let ((bold (memq 'bold font)) | |
1163 | (italic (memq 'italic font))) | |
1164 | (cond ((and bold italic) | |
1165 | (make-face-bold-italic face frame)) | |
1166 | (bold | |
1167 | (make-face-bold face frame)) | |
1168 | (italic | |
1169 | (make-face-italic face frame)))) | |
1170 | (if font | |
ca58b3ec KH |
1171 | (set-face-font face font frame))) |
1172 | (if stipple | |
1173 | (set-face-stipple face stipple frame))) | |
19ae9866 | 1174 | (error nil))) |
e09c52a8 | 1175 | |
4099a32d RS |
1176 | ;; Assuming COLOR is a valid color name, |
1177 | ;; return t if it can be displayed on FRAME. | |
1178 | (defun face-color-supported-p (frame color background-p) | |
1179 | (or (x-display-color-p frame) | |
1180 | ;; A black-and-white display can implement these. | |
1181 | (member color '("black" "white")) | |
ef436392 | 1182 | ;; A black-and-white display can fake gray for background. |
4099a32d | 1183 | (and background-p |
ef436392 | 1184 | (face-color-gray-p color frame)) |
4099a32d RS |
1185 | ;; A grayscale display can implement colors that are gray (more or less). |
1186 | (and (x-display-grayscale-p frame) | |
ef436392 | 1187 | (face-color-gray-p color frame)))) |
4099a32d | 1188 | |
19ae9866 RS |
1189 | ;; Use FUNCTION to store a color in FACE on FRAME. |
1190 | ;; COLORS is either a single color or a list of colors. | |
1191 | ;; If it is a list, try the colors one by one until one of them | |
1192 | ;; succeeds. We signal an error only if all the colors failed. | |
1193 | ;; t as COLORS or as an element of COLORS means to invert the face. | |
1194 | ;; That can't fail, so any subsequent elements after the t are ignored. | |
1195 | (defun face-try-color-list (function face colors frame) | |
1196 | (if (stringp colors) | |
4099a32d RS |
1197 | (if (face-color-supported-p frame colors |
1198 | (eq function 'set-face-background)) | |
1199 | (funcall function face colors frame)) | |
19ae9866 RS |
1200 | (if (eq colors t) |
1201 | (invert-face face frame) | |
1202 | (let (done) | |
1203 | (while (and colors (not done)) | |
de52827f | 1204 | (if (or (memq (car colors) '(t underline)) |
4099a32d RS |
1205 | (face-color-supported-p frame (car colors) |
1206 | (eq function 'set-face-background))) | |
1207 | (if (cdr colors) | |
1208 | ;; If there are more colors to try, catch errors | |
1209 | ;; and set `done' if we succeed. | |
1210 | (condition-case nil | |
1211 | (progn | |
1212 | (cond ((eq (car colors) t) | |
1213 | (invert-face face frame)) | |
1214 | ((eq (car colors) 'underline) | |
1215 | (set-face-underline-p face t frame)) | |
1216 | (t | |
1217 | (funcall function face (car colors) frame))) | |
1218 | (setq done t)) | |
1219 | (error nil)) | |
1220 | ;; If this is the last color, let the error get out if it fails. | |
1221 | ;; If it succeeds, we will exit anyway after this iteration. | |
1222 | (cond ((eq (car colors) t) | |
1223 | (invert-face face frame)) | |
1224 | ((eq (car colors) 'underline) | |
1225 | (set-face-underline-p face t frame)) | |
1226 | (t | |
1227 | (funcall function face (car colors) frame))))) | |
19ae9866 | 1228 | (setq colors (cdr colors))))))) |
e09c52a8 RS |
1229 | |
1230 | ;; If we are already using x-window frames, initialize faces for them. | |
1231 | (if (eq (framep (selected-frame)) 'x) | |
1232 | (face-initialize)) | |
465fceed | 1233 | |
f0138172 JB |
1234 | (provide 'faces) |
1235 | ||
465fceed | 1236 | ;;; faces.el ends here |