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