1 ;;; facemenu.el --- create a face menu for interactively adding fonts to text
3 ;; Copyright (C) 1994, 1995, 1996, 2001, 2002, 2003, 2004,
4 ;; 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
6 ;; Author: Boris Goldowsky <boris@gnu.org>
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software: you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation, either version 3 of the License, or
14 ;; (at your option) any later version.
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
26 ;; This file defines a menu of faces (bold, italic, etc) which allows you to
27 ;; set the face used for a region of the buffer. Some faces also have
28 ;; keybindings, which are shown in the menu.
30 ;; The menu also contains submenus for indentation and justification-changing
34 ;; Selecting a face from the menu or typing the keyboard equivalent will
35 ;; change the region to use that face. If you use transient-mark-mode and the
36 ;; region is not active, the face will be remembered and used for the next
37 ;; insertion. It will be forgotten if you move point or make other
38 ;; modifications before inserting or typing anything.
40 ;; Faces can be selected from the keyboard as well.
41 ;; The standard keybindings are M-o (or ESC o) + letter:
42 ;; M-o i = "set italic", M-o b = "set bold", etc.
45 ;; An alternative set of keybindings that may be easier to type can be set up
46 ;; using "Alt" or "Hyper" keys. This requires that you either have or create
47 ;; an Alt or Hyper key on your keyboard. On my keyboard, there is a key
48 ;; labeled "Alt", but to make it act as an Alt key I have to put this command
50 ;; xmodmap -e "add Mod3 = Alt_L"
51 ;; Or, I can make it into a Hyper key with this:
52 ;; xmodmap -e "keysym Alt_L = Hyper_L" -e "add Mod2 = Hyper_L"
53 ;; Check with local X-perts for how to do it on your system.
54 ;; Then you can define your keybindings with code like this in your .emacs:
55 ;; (setq facemenu-keybindings
56 ;; '((default . [?\H-d])
59 ;; (bold-italic . [?\H-l])
60 ;; (underline . [?\H-u])))
62 ;; (setq facemenu-keymap global-map)
63 ;; (define-key global-map [?\H-c] 'facemenu-set-foreground) ; set fg color
64 ;; (define-key global-map [?\H-C] 'facemenu-set-background) ; set bg color
66 ;; The order of the faces that appear in the menu and their keybindings can be
67 ;; controlled by setting the variables `facemenu-keybindings' and
68 ;; `facemenu-new-faces-at-end'. List faces that you want to use in documents
69 ;; in `facemenu-listed-faces'.
72 ;; Bold and Italic do not combine to create bold-italic if you select them
73 ;; both, although most other combinations (eg bold + underline + some color)
74 ;; do the intuitive thing.
76 ;; There is at present no way to display what the faces look like in
79 ;; `list-faces-display' shows the faces in a different order than
80 ;; this menu, which could be confusing. I do /not/ sort the list
81 ;; alphabetically, because I like the default order: it puts the most
82 ;; basic, common fonts first.
84 ;; Please send me any other problems, comments or ideas.
93 (define-key global-map [C-down-mouse-2] 'facemenu-menu)
94 (define-key global-map "\M-o" 'facemenu-keymap)
96 (defgroup facemenu nil
97 "Create a face menu for interactively adding fonts to text."
101 (defcustom facemenu-keybindings
105 (bold-italic . "l") ; {bold} intersect {italic} = {l}
107 "Alist of interesting faces and keybindings.
108 Each element is itself a list: the car is the name of the face,
109 the next element is the key to use as a keyboard equivalent of the menu item;
110 the binding is made in `facemenu-keymap'.
112 The faces specifically mentioned in this list are put at the top of
113 the menu, in the order specified. All other faces which are defined
114 in `facemenu-listed-faces' are listed after them, but get no
115 keyboard equivalents.
117 If you change this variable after loading facemenu.el, you will need to call
118 `facemenu-update' to make it take effect."
119 :type '(repeat (cons face string))
122 (defcustom facemenu-new-faces-at-end t
123 "Where in the menu to insert newly-created faces.
124 This should be nil to put them at the top of the menu, or t to put them
125 just before \"Other\" at the end."
129 (defvar facemenu-unlisted-faces
130 `(modeline region secondary-selection highlight scratch-face
131 ,(purecopy "^font-lock-") ,(purecopy "^gnus-") ,(purecopy "^message-")
132 ,(purecopy "^ediff-") ,(purecopy "^term-") ,(purecopy "^vc-")
133 ,(purecopy "^widget-") ,(purecopy "^custom-") ,(purecopy "^vm-"))
134 "*List of faces that are of no interest to the user.")
135 (make-obsolete-variable 'facemenu-unlisted-faces 'facemenu-listed-faces
136 "22.1,\n and has no effect on the Face menu")
138 (defcustom facemenu-listed-faces nil
139 "List of faces to include in the Face menu.
140 Each element should be a symbol, the name of a face.
141 The \"basic \" faces in `facemenu-keybindings' are automatically
142 added to the Face menu, and need not be in this list.
144 This value takes effect when you load facemenu.el. If the
145 list includes symbols which are not defined as faces, they
146 are ignored; however, subsequently defining or creating
147 those faces adds them to the menu then. You can call
148 `facemenu-update' to recalculate the menu contents, such as
149 if you change the value of this variable,
151 If this variable is t, all faces that you apply to text
152 using the face menu commands (even by name), and all faces
153 that you define or create, are added to the menu. You may
154 find it useful to set this variable to t temporarily while
155 you define some faces, so that they will be added. However,
156 if the value is no longer t and you call `facemenu-update',
157 it will remove any faces not explicitly in the list."
158 :type '(choice (const :tag "List all faces" t)
159 (const :tag "None" nil)
164 (defvar facemenu-face-menu
165 (let ((map (make-sparse-keymap "Face")))
166 (define-key map "o" (cons (purecopy "Other...") 'facemenu-set-face))
168 "Menu keymap for faces.")
169 (defalias 'facemenu-face-menu facemenu-face-menu)
170 (put 'facemenu-face-menu 'menu-enable '(facemenu-enable-faces-p))
172 (defvar facemenu-foreground-menu
173 (let ((map (make-sparse-keymap "Foreground Color")))
174 (define-key map "o" (cons (purecopy "Other...") 'facemenu-set-foreground))
176 "Menu keymap for foreground colors.")
177 (defalias 'facemenu-foreground-menu facemenu-foreground-menu)
178 (put 'facemenu-foreground-menu 'menu-enable '(facemenu-enable-faces-p))
180 (defvar facemenu-background-menu
181 (let ((map (make-sparse-keymap "Background Color")))
182 (define-key map "o" (cons (purecopy "Other...") 'facemenu-set-background))
184 "Menu keymap for background colors.")
185 (defalias 'facemenu-background-menu facemenu-background-menu)
186 (put 'facemenu-background-menu 'menu-enable '(facemenu-enable-faces-p))
188 ;;; Condition for enabling menu items that set faces.
189 (defun facemenu-enable-faces-p ()
190 ;; Enable the facemenu if facemenu-add-face-function is defined
191 ;; (e.g. in Tex-mode and SGML mode), or if font-lock is off.
192 (or (not (and font-lock-mode font-lock-defaults))
193 facemenu-add-face-function))
195 (defvar facemenu-special-menu
196 (let ((map (make-sparse-keymap "Special")))
197 (define-key map [?s] (cons (purecopy "Remove Special")
198 'facemenu-remove-special))
199 (define-key map [?t] (cons (purecopy "Intangible")
200 'facemenu-set-intangible))
201 (define-key map [?v] (cons (purecopy "Invisible")
202 'facemenu-set-invisible))
203 (define-key map [?r] (cons (purecopy "Read-Only")
204 'facemenu-set-read-only))
206 "Menu keymap for non-face text-properties.")
207 (defalias 'facemenu-special-menu facemenu-special-menu)
209 (defvar facemenu-justification-menu
210 (let ((map (make-sparse-keymap "Justification")))
211 (define-key map [?c] (cons (purecopy "Center") 'set-justification-center))
212 (define-key map [?b] (cons (purecopy "Full") 'set-justification-full))
213 (define-key map [?r] (cons (purecopy "Right") 'set-justification-right))
214 (define-key map [?l] (cons (purecopy "Left") 'set-justification-left))
215 (define-key map [?u] (cons (purecopy "Unfilled") 'set-justification-none))
217 "Submenu for text justification commands.")
218 (defalias 'facemenu-justification-menu facemenu-justification-menu)
220 (defvar facemenu-indentation-menu
221 (let ((map (make-sparse-keymap "Indentation")))
222 (define-key map [decrease-right-margin]
223 (cons (purecopy "Indent Right Less") 'decrease-right-margin))
224 (define-key map [increase-right-margin]
225 (cons (purecopy "Indent Right More") 'increase-right-margin))
226 (define-key map [decrease-left-margin]
227 (cons (purecopy "Indent Less") 'decrease-left-margin))
228 (define-key map [increase-left-margin]
229 (cons (purecopy "Indent More") 'increase-left-margin))
231 "Submenu for indentation commands.")
232 (defalias 'facemenu-indentation-menu facemenu-indentation-menu)
234 ;; This is split up to avoid an overlong line in loaddefs.el.
235 (defvar facemenu-menu nil
236 "Facemenu top-level menu keymap.")
237 (setq facemenu-menu (make-sparse-keymap "Text Properties"))
238 (let ((map facemenu-menu))
239 (define-key map [dc] (cons (purecopy "Display Colors") 'list-colors-display))
240 (define-key map [df] (cons (purecopy "Display Faces") 'list-faces-display))
241 (define-key map [dp] (cons (purecopy "Describe Properties")
242 'describe-text-properties))
243 (define-key map [ra] (cons (purecopy "Remove Text Properties")
244 'facemenu-remove-all))
245 (define-key map [rm] (cons (purecopy "Remove Face Properties")
246 'facemenu-remove-face-props))
247 (define-key map [s1] (list (purecopy "--"))))
248 (let ((map facemenu-menu))
249 (define-key map [in] (cons (purecopy "Indentation")
250 'facemenu-indentation-menu))
251 (define-key map [ju] (cons (purecopy "Justification")
252 'facemenu-justification-menu))
253 (define-key map [s2] (list (purecopy "--")))
254 (define-key map [sp] (cons (purecopy "Special Properties")
255 'facemenu-special-menu))
256 (define-key map [bg] (cons (purecopy "Background Color")
257 'facemenu-background-menu))
258 (define-key map [fg] (cons (purecopy "Foreground Color")
259 'facemenu-foreground-menu))
260 (define-key map [fc] (cons (purecopy "Face")
261 'facemenu-face-menu)))
262 (defalias 'facemenu-menu facemenu-menu)
264 (defvar facemenu-keymap
265 (let ((map (make-sparse-keymap "Set face")))
266 (define-key map "o" (cons (purecopy "Other...") 'facemenu-set-face))
267 (define-key map "\M-o" 'font-lock-fontify-block)
269 "Keymap for face-changing commands.
270 `Facemenu-update' fills in the keymap according to the bindings
271 requested in `facemenu-keybindings'.")
272 (defalias 'facemenu-keymap facemenu-keymap)
275 (defcustom facemenu-add-face-function nil
276 "Function called at beginning of text to change or nil.
277 This function is passed the FACE to set and END of text to change, and must
278 return a string which is inserted. It may set `facemenu-end-add-face'."
279 :type '(choice (const :tag "None" nil)
283 (defcustom facemenu-end-add-face nil
284 "String to insert or function called at end of text to change or nil.
285 This function is passed the FACE to set, and must return a string which is
287 :type '(choice (const :tag "None" nil)
292 (defcustom facemenu-remove-face-function nil
293 "When non-nil, this is a function called to remove faces.
294 This function is passed the START and END of text to change.
295 May also be t meaning to use `facemenu-add-face-function'."
296 :type '(choice (const :tag "None" nil)
297 (const :tag "Use add-face" t)
301 ;;; Internal Variables
303 (defvar facemenu-color-alist nil
304 "Alist of colors, used for completion.
305 If this is nil, then the value of (defined-colors) is used.")
307 (defun facemenu-update ()
308 "Add or update the \"Face\" menu in the menu bar.
309 You can call this to update things if you change any of the menu configuration
313 ;; Add each defined face to the menu.
314 (facemenu-iterate 'facemenu-add-new-face
315 (facemenu-complete-face-list facemenu-keybindings)))
317 (defun facemenu-set-face (face &optional start end)
318 "Apply FACE to the region or next character typed.
320 If the region is active (normally true except in Transient
321 Mark mode) and nonempty, and there is no prefix argument,
322 this command applies FACE to the region. Otherwise, it applies FACE
323 to the faces to use for the next character
324 inserted. (Moving point or switching buffers before typing
325 a character to insert cancels the specification.)
327 If FACE is `default', to \"apply\" it means clearing
328 the list of faces to be used. For any other value of FACE,
329 to \"apply\" it means putting FACE at the front of the list
330 of faces to be used, and removing any faces further
331 along in the list that would be completely overridden by
332 preceding faces (including FACE).
334 This command can also add FACE to the menu of faces,
335 if `facemenu-listed-faces' says to do that."
336 (interactive (list (progn
337 (barf-if-buffer-read-only)
338 (read-face-name "Use face"))
339 (if (and mark-active (not current-prefix-arg))
341 (if (and mark-active (not current-prefix-arg))
343 (facemenu-add-new-face face)
344 (facemenu-add-face face start end))
346 (defun facemenu-set-foreground (color &optional start end)
347 "Set the foreground COLOR of the region or next character typed.
348 This command reads the color in the minibuffer.
350 If the region is active (normally true except in Transient Mark mode)
351 and there is no prefix argument, this command sets the region to the
354 Otherwise, this command specifies the face for the next character
355 inserted. Moving point or switching buffers before
356 typing a character to insert cancels the specification."
357 (interactive (list (progn
358 (barf-if-buffer-read-only)
359 (facemenu-read-color "Foreground color: "))
360 (if (and mark-active (not current-prefix-arg))
362 (if (and mark-active (not current-prefix-arg))
364 (facemenu-set-face-from-menu
365 (facemenu-add-new-color color 'facemenu-foreground-menu)
368 (defun facemenu-set-background (color &optional start end)
369 "Set the background COLOR of the region or next character typed.
370 This command reads the color in the minibuffer.
372 If the region is active (normally true except in Transient Mark mode)
373 and there is no prefix argument, this command sets the region to the
376 Otherwise, this command specifies the face for the next character
377 inserted. Moving point or switching buffers before
378 typing a character to insert cancels the specification."
379 (interactive (list (progn
380 (barf-if-buffer-read-only)
381 (facemenu-read-color "Background color: "))
382 (if (and mark-active (not current-prefix-arg))
384 (if (and mark-active (not current-prefix-arg))
386 (facemenu-set-face-from-menu
387 (facemenu-add-new-color color 'facemenu-background-menu)
390 (defun facemenu-set-face-from-menu (face start end)
391 "Set the FACE of the region or next character typed.
392 This function is designed to be called from a menu; FACE is determined
393 using the event type of the menu entry. If FACE is a symbol whose
394 name starts with \"fg:\" or \"bg:\", then this functions sets the
395 foreground or background to the color specified by the rest of the
396 symbol's name. Any other symbol is considered the name of a face.
398 If the region is active (normally true except in Transient Mark mode)
399 and there is no prefix argument, this command sets the region to the
402 Otherwise, this command specifies the face for the next character
403 inserted. Moving point or switching buffers before typing a character
404 to insert cancels the specification."
405 (interactive (list last-command-event
406 (if (and mark-active (not current-prefix-arg))
408 (if (and mark-active (not current-prefix-arg))
410 (barf-if-buffer-read-only)
412 (let ((fn (symbol-name face)))
413 (if (string-match "\\`\\([fb]\\)g:\\(.+\\)" fn)
414 (list (list (if (string= (match-string 1 fn) "f")
417 (match-string 2 fn)))
421 (defun facemenu-set-invisible (start end)
422 "Make the region invisible.
423 This sets the `invisible' text property; it can be undone with
424 `facemenu-remove-special'."
426 (add-text-properties start end '(invisible t)))
428 (defun facemenu-set-intangible (start end)
429 "Make the region intangible: disallow moving into it.
430 This sets the `intangible' text property; it can be undone with
431 `facemenu-remove-special'."
433 (add-text-properties start end '(intangible t)))
435 (defun facemenu-set-read-only (start end)
436 "Make the region unmodifiable.
437 This sets the `read-only' text property; it can be undone with
438 `facemenu-remove-special'."
440 (add-text-properties start end '(read-only t)))
442 (defun facemenu-remove-face-props (start end)
443 "Remove `face' and `mouse-face' text properties."
444 (interactive "*r") ; error if buffer is read-only despite the next line.
445 (let ((inhibit-read-only t))
446 (remove-text-properties
447 start end '(face nil mouse-face nil))))
449 (defun facemenu-remove-all (start end)
450 "Remove all text properties from the region."
451 (interactive "*r") ; error if buffer is read-only despite the next line.
452 (let ((inhibit-read-only t))
453 (set-text-properties start end nil)))
455 (defun facemenu-remove-special (start end)
456 "Remove all the \"special\" text properties from the region.
457 These special properties include `invisible', `intangible' and `read-only'."
458 (interactive "*r") ; error if buffer is read-only despite the next line.
459 (let ((inhibit-read-only t))
460 (remove-text-properties
461 start end '(invisible nil intangible nil read-only nil))))
463 (defun facemenu-read-color (&optional prompt)
464 "Read a color using the minibuffer."
465 (let* ((completion-ignore-case t)
466 (color-list (or facemenu-color-alist (defined-colors)))
468 (lambda (string pred all-completions)
470 (or (all-completions string color-list pred)
471 (if (color-defined-p string)
473 (or (try-completion string color-list pred)
474 (if (color-defined-p string)
476 (col (completing-read (or prompt "Color: ") completer nil t)))
481 (defun list-colors-display (&optional list buffer-name)
482 "Display names of defined colors, and show what they look like.
483 If the optional argument LIST is non-nil, it should be a list of
484 colors to display. Otherwise, this command computes a list of
485 colors that the current display can handle. If the optional
486 argument BUFFER-NAME is nil, it defaults to *Colors*."
488 (when (and (null list) (> (display-color-cells) 0))
489 (setq list (list-colors-duplicates (defined-colors)))
490 (when (memq (display-visual-class) '(gray-scale pseudo-color direct-color))
491 ;; Don't show more than what the display can handle.
492 (let ((lc (nthcdr (1- (display-color-cells)) list)))
495 (with-help-window (or buffer-name "*Colors*")
497 (set-buffer standard-output)
498 (setq truncate-lines t)
499 (if temp-buffer-show-function
500 (list-colors-print list)
501 ;; Call list-colors-print from temp-buffer-show-hook
502 ;; to get the right value of window-width in list-colors-print
503 ;; after the buffer is displayed.
504 (add-hook 'temp-buffer-show-hook
506 (set-buffer-modified-p
507 (prog1 (buffer-modified-p)
508 (list-colors-print list))))
511 (defun list-colors-print (list)
515 (setq color (sort color (lambda (a b)
516 (string< (downcase a)
518 (setq color (list color)))
524 'face (list ':background (car color)))
527 (insert " " (if (cdr color)
528 (mapconcat 'identity (cdr color) ", ")
531 'face (list ':foreground (car color)))
532 (indent-to (max (- (window-width) 8) 44))
533 (insert (apply 'format "#%02x%02x%02x"
534 (mapcar (lambda (c) (lsh c -8))
535 (color-values (car color)))))
538 (goto-char (point-min)))
540 (defun list-colors-duplicates (&optional list)
541 "Return a list of colors with grouped duplicate colors.
542 If a color has no duplicates, then the element of the returned list
543 has the form '(COLOR-NAME). The element of the returned list with
544 duplicate colors has the form '(COLOR-NAME DUPLICATE-COLOR-NAME ...).
545 This function uses the predicate `facemenu-color-equal' to compare
546 color names. If the optional argument LIST is non-nil, it should
547 be a list of colors to display. Otherwise, this function uses
548 a list of colors that the current display can handle."
549 (let* ((list (mapcar 'list (or list (defined-colors))))
552 (if (and (facemenu-color-equal (car (car l)) (car (car (cdr l))))
553 (not (if (fboundp 'w32-default-color-map)
554 (not (assoc (car (car l)) (w32-default-color-map))))))
556 (setcdr (car l) (cons (car (car (cdr l))) (cdr (car l))))
557 (setcdr l (cdr (cdr l))))
561 (defun facemenu-color-equal (a b)
562 "Return t if colors A and B are the same color.
563 A and B should be strings naming colors.
564 This function queries the display system to find out what the color
565 names mean. It returns nil if the colors differ or if it can't
566 determine the correct answer."
567 (cond ((equal a b) t)
568 ((equal (color-values a) (color-values b)))))
570 (defun facemenu-add-face (face &optional start end)
571 "Add FACE to text between START and END.
572 If START is nil or START to END is empty, add FACE to next typed character
573 instead. For each section of that region that has a different face property,
574 FACE will be consed onto it, and other faces that are completely hidden by
575 that will be removed from the list.
576 If `facemenu-add-face-function' and maybe `facemenu-end-add-face' are non-nil,
577 they are used to set the face information.
579 As a special case, if FACE is `default', then the region is left with NO face
580 text property. Otherwise, selecting the default face would not have any
581 effect. See `facemenu-remove-face-function'."
582 (interactive "*xFace: \nr")
583 (if (and (eq face 'default)
584 (not (eq facemenu-remove-face-function t)))
585 (if facemenu-remove-face-function
586 (funcall facemenu-remove-face-function start end)
587 (if (and start (< start end))
588 (remove-text-properties start end '(face default))
589 (setq self-insert-face 'default
590 self-insert-face-command this-command)))
591 (if facemenu-add-face-function
593 (if end (goto-char end))
595 (if start (goto-char start))
596 (insert-before-markers
597 (funcall facemenu-add-face-function face end)))
598 (if facemenu-end-add-face
599 (insert (if (stringp facemenu-end-add-face)
600 facemenu-end-add-face
601 (funcall facemenu-end-add-face face)))))
602 (if (and start (< start end))
603 (let ((part-start start) part-end)
604 (while (not (= part-start end))
605 (setq part-end (next-single-property-change part-start 'face
607 (let ((prev (get-text-property part-start 'face)))
608 (put-text-property part-start part-end 'face
611 (facemenu-active-faces
616 ;; Specify the selected frame
617 ;; because nil would mean to use
618 ;; the new-frame default settings,
619 ;; and those are usually nil.
621 (setq part-start part-end)))
622 (setq self-insert-face (if (eq last-command self-insert-face-command)
623 (cons face (if (listp self-insert-face)
625 (list self-insert-face)))
627 self-insert-face-command this-command))))
628 (unless (facemenu-enable-faces-p)
629 (message "Font-lock mode will override any faces you set in this buffer")))
631 (defun facemenu-active-faces (face-list &optional frame)
632 "Return from FACE-LIST those faces that would be used for display.
633 This means each face attribute is not specified in a face earlier in FACE-LIST
634 and such a face is therefore active when used to display text.
635 If the optional argument FRAME is given, use the faces in that frame; otherwise
636 use the selected frame. If t, then the global, non-frame faces are used."
637 (let* ((mask-atts (copy-sequence
638 (if (consp (car face-list))
639 (face-attributes-as-vector (car face-list))
640 (or (internal-lisp-face-p (car face-list) frame)
641 (check-face (car face-list))))))
642 (active-list (list (car face-list)))
643 (face-list (cdr face-list))
644 (mask-len (length mask-atts)))
647 (if (consp (car face-list))
648 (face-attributes-as-vector (car face-list))
649 (or (internal-lisp-face-p (car face-list) frame)
650 (check-face (car face-list)))))
653 (while (>= (setq i (1- i)) 0)
654 (and (not (memq (aref face-atts i) '(nil unspecified)))
655 (memq (aref mask-atts i) '(nil unspecified))
656 (aset mask-atts i (setq useful t))))
658 (setq active-list (cons (car face-list) active-list)))
659 (setq face-list (cdr face-list)))
660 (nreverse active-list)))
662 (defun facemenu-add-new-face (face)
663 "Add FACE (a face) to the Face menu if `facemenu-listed-faces' says so.
664 This is called whenever you create a new face, and at other times."
668 (key (cdr (assoc face facemenu-keybindings)))
671 (setq name (symbol-name face)
674 symbol (intern name)))
675 (setq menu 'facemenu-face-menu)
677 (purecopy (format "Select face `%s' for subsequent insertion.
678 If the mark is active and there is no prefix argument,
679 apply face `%s' to the region instead.
680 This command was defined by `facemenu-add-new-face'."
682 (cond ((facemenu-iterate ; check if equivalent face is already in the menu
683 (lambda (m) (and (listp m)
685 ;; Avoid error in face-equal
686 ;; when a non-face is erroneously present.
688 (face-equal (car m) symbol)))
689 (cdr (symbol-function menu))))
690 ;; Faces with a keyboard equivalent. These go at the front.
692 (setq function (intern (concat "facemenu-set-" name)))
699 (if (and mark-active (not current-prefix-arg))
701 (if (and mark-active (not current-prefix-arg))
703 (define-key 'facemenu-keymap key (cons name function))
704 (define-key menu key (cons name function)))
705 ;; Faces with no keyboard equivalent. Figure out where to put it:
706 ((or (eq t facemenu-listed-faces)
707 (memq symbol facemenu-listed-faces))
708 (setq key (vector symbol)
709 function 'facemenu-set-face-from-menu
710 menu-val (symbol-function menu))
711 (if (and facemenu-new-faces-at-end
712 (> (length menu-val) 3))
713 (define-key-after menu-val key (cons name function)
714 (car (nth (- (length menu-val) 3) menu-val)))
715 (define-key menu key (cons name function))))))
716 nil) ; Return nil for facemenu-iterate
718 (defun facemenu-add-new-color (color menu)
719 "Add COLOR (a color name string) to the appropriate Face menu.
720 MENU should be `facemenu-foreground-menu' or `facemenu-background-menu'.
721 Return the event type (a symbol) of the added menu entry.
723 This is called whenever you use a new color."
724 (let (symbol docstring)
725 (unless (color-defined-p color)
726 (error "Color `%s' undefined" color))
727 (cond ((eq menu 'facemenu-foreground-menu)
729 (format "Select foreground color %s for subsequent insertion."
731 symbol (intern (concat "fg:" color))))
732 ((eq menu 'facemenu-background-menu)
734 (format "Select background color %s for subsequent insertion."
736 symbol (intern (concat "bg:" color))))
737 (t (error "MENU should be `facemenu-foreground-menu' or `facemenu-background-menu'")))
738 (unless (facemenu-iterate ; Check if color is already in the menu.
739 (lambda (m) (and (listp m)
740 (eq (car m) symbol)))
741 (cdr (symbol-function menu)))
742 ;; Color is not in the menu. Figure out where to put it.
743 (let ((key (vector symbol))
744 (function 'facemenu-set-face-from-menu)
745 (menu-val (symbol-function menu)))
746 (if (and facemenu-new-faces-at-end
747 (> (length menu-val) 3))
748 (define-key-after menu-val key (cons color function)
749 (car (nth (- (length menu-val) 3) menu-val)))
750 (define-key menu key (cons color function)))))
753 (defun facemenu-complete-face-list (&optional oldlist)
754 "Return list of all faces that look different.
755 Starts with given ALIST of faces, and adds elements only if they display
756 differently from any face already on the list.
757 The faces on ALIST will end up at the end of the returned list, in reverse
759 (let ((list (nreverse (mapcar 'car oldlist))))
762 (if (not (memq new-face list))
763 (setq list (cons new-face list)))
765 (nreverse (face-list)))
768 (defun facemenu-iterate (func list)
769 "Apply FUNC to each element of LIST until one returns non-nil.
770 Returns the non-nil value it found, or nil if all were nil."
771 (while (and list (not (funcall func (car list))))
772 (setq list (cdr list)))
779 ;; arch-tag: 85f6d02b-9085-420e-b651-0678f0e9c7eb
780 ;;; facemenu.el ends here