1;;; facemenu.el --- create a face menu for interactively adding fonts to text 2 3;; Copyright (C) 1994, 1995, 1996, 2001, 2002, 2003, 2004, 4;; 2005, 2006, 2007 Free Software Foundation, Inc. 5 6;; Author: Boris Goldowsky <boris@gnu.org> 7;; Keywords: faces 8 9;; This file is part of GNU Emacs. 10 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 2, or (at your option) 14;; any later version. 15 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. 20 21;; You should have received a copy of the GNU General Public License 22;; along with GNU Emacs; see the file COPYING. If not, write to the 23;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 24;; Boston, MA 02110-1301, USA. 25 26;;; Commentary: 27 28;; This file defines a menu of faces (bold, italic, etc) which allows you to 29;; set the face used for a region of the buffer. Some faces also have 30;; keybindings, which are shown in the menu. 31;; 32;; The menu also contains submenus for indentation and justification-changing 33;; commands. 34 35;;; Usage: 36;; Selecting a face from the menu or typing the keyboard equivalent will 37;; change the region to use that face. If you use transient-mark-mode and the 38;; region is not active, the face will be remembered and used for the next 39;; insertion. It will be forgotten if you move point or make other 40;; modifications before inserting or typing anything. 41;; 42;; Faces can be selected from the keyboard as well. 43;; The standard keybindings are M-o (or ESC o) + letter: 44;; M-o i = "set italic", M-o b = "set bold", etc. 45 46;;; Customization: 47;; An alternative set of keybindings that may be easier to type can be set up 48;; using "Alt" or "Hyper" keys. This requires that you either have or create 49;; an Alt or Hyper key on your keyboard. On my keyboard, there is a key 50;; labeled "Alt", but to make it act as an Alt key I have to put this command 51;; into my .xinitrc: 52;; xmodmap -e "add Mod3 = Alt_L" 53;; Or, I can make it into a Hyper key with this: 54;; xmodmap -e "keysym Alt_L = Hyper_L" -e "add Mod2 = Hyper_L" 55;; Check with local X-perts for how to do it on your system. 56;; Then you can define your keybindings with code like this in your .emacs: 57;; (setq facemenu-keybindings 58;; '((default . [?\H-d]) 59;; (bold . [?\H-b]) 60;; (italic . [?\H-i]) 61;; (bold-italic . [?\H-l]) 62;; (underline . [?\H-u]))) 63;; (facemenu-update) 64;; (setq facemenu-keymap global-map) 65;; (define-key global-map [?\H-c] 'facemenu-set-foreground) ; set fg color 66;; (define-key global-map [?\H-C] 'facemenu-set-background) ; set bg color 67;; 68;; The order of the faces that appear in the menu and their keybindings can be 69;; controlled by setting the variables `facemenu-keybindings' and 70;; `facemenu-new-faces-at-end'. List faces that you want to use in documents 71;; in `facemenu-listed-faces'. 72 73;;; Known Problems: 74;; Bold and Italic do not combine to create bold-italic if you select them 75;; both, although most other combinations (eg bold + underline + some color) 76;; do the intuitive thing. 77;; 78;; There is at present no way to display what the faces look like in 79;; the menu itself. 80;; 81;; `list-faces-display' shows the faces in a different order than 82;; this menu, which could be confusing. I do /not/ sort the list 83;; alphabetically, because I like the default order: it puts the most 84;; basic, common fonts first. 85;; 86;; Please send me any other problems, comments or ideas. 87 88;;; Code: 89 90(eval-when-compile 91 (require 'help) 92 (require 'button)) 93 94;;; Provide some binding for startup: 95;;;###autoload (define-key global-map "\M-o" 'facemenu-keymap) 96;;;###autoload (autoload 'facemenu-keymap "facemenu" "Keymap for face-changing commands." t 'keymap) 97 98;; Global bindings: 99(define-key global-map [C-down-mouse-2] 'facemenu-menu) 100(define-key global-map "\M-o" 'facemenu-keymap) 101 102(defgroup facemenu nil 103 "Create a face menu for interactively adding fonts to text." 104 :group 'faces 105 :prefix "facemenu-") 106 107(defcustom facemenu-keybindings 108 '((default . "d") 109 (bold . "b") 110 (italic . "i") 111 (bold-italic . "l") ; {bold} intersect {italic} = {l} 112 (underline . "u")) 113 "Alist of interesting faces and keybindings. 114Each element is itself a list: the car is the name of the face, 115the next element is the key to use as a keyboard equivalent of the menu item; 116the binding is made in `facemenu-keymap'. 117 118The faces specifically mentioned in this list are put at the top of 119the menu, in the order specified. All other faces which are defined 120in `facemenu-listed-faces' are listed after them, but get no 121keyboard equivalents. 122 123If you change this variable after loading facemenu.el, you will need to call 124`facemenu-update' to make it take effect." 125 :type '(repeat (cons face string)) 126 :group 'facemenu) 127 128(defcustom facemenu-new-faces-at-end t 129 "*Where in the menu to insert newly-created faces. 130This should be nil to put them at the top of the menu, or t to put them 131just before \"Other\" at the end." 132 :type 'boolean 133 :group 'facemenu) 134 135(defvar facemenu-unlisted-faces 136 `(modeline region secondary-selection highlight scratch-face 137 ,(purecopy "^font-lock-") ,(purecopy "^gnus-") ,(purecopy "^message-") 138 ,(purecopy "^ediff-") ,(purecopy "^term-") ,(purecopy "^vc-") 139 ,(purecopy "^widget-") ,(purecopy "^custom-") ,(purecopy "^vm-")) 140 "*List of faces that are of no interest to the user.") 141(make-obsolete-variable 'facemenu-unlisted-faces 'facemenu-listed-faces 142 "since 22.1,\nand has no effect on the Face menu") 143 144(defcustom facemenu-listed-faces nil 145 "*List of faces to include in the Face menu. 146Each element should be a symbol, the name of a face. 147The \"basic \" faces in `facemenu-keybindings' are automatically 148added to the Face menu, and need not be in this list. 149 150This value takes effect when you load facemenu.el. If the 151list includes symbols which are not defined as faces, they 152are ignored; however, subsequently defining or creating 153those faces adds them to the menu then. You can call 154`facemenu-update' to recalculate the menu contents, such as 155if you change the value of this variable, 156 157If this variable is t, all faces that you apply to text 158using the face menu commands (even by name), and all faces 159that you define or create, are added to the menu. You may 160find it useful to set this variable to t temporarily while 161you define some faces, so that they will be added. However, 162if the value is no longer t and you call `facemenu-update', 163it will remove any faces not explicitly in the list." 164 :type '(choice (const :tag "List all faces" t) 165 (const :tag "None" nil) 166 (repeat symbol)) 167 :group 'facemenu 168 :version "22.1") 169 170;;;###autoload 171(defvar facemenu-face-menu 172 (let ((map (make-sparse-keymap "Face"))) 173 (define-key map "o" (cons "Other..." 'facemenu-set-face)) 174 map) 175 "Menu keymap for faces.") 176;;;###autoload 177(defalias 'facemenu-face-menu facemenu-face-menu) 178(put 'facemenu-face-menu 'menu-enable '(facemenu-enable-faces-p)) 179 180;;;###autoload 181(defvar facemenu-foreground-menu 182 (let ((map (make-sparse-keymap "Foreground Color"))) 183 (define-key map "o" (cons "Other..." 'facemenu-set-foreground)) 184 map) 185 "Menu keymap for foreground colors.") 186;;;###autoload 187(defalias 'facemenu-foreground-menu facemenu-foreground-menu) 188(put 'facemenu-foreground-menu 'menu-enable '(facemenu-enable-faces-p)) 189 190;;;###autoload 191(defvar facemenu-background-menu 192 (let ((map (make-sparse-keymap "Background Color"))) 193 (define-key map "o" (cons "Other..." 'facemenu-set-background)) 194 map) 195 "Menu keymap for background colors.") 196;;;###autoload 197(defalias 'facemenu-background-menu facemenu-background-menu) 198(put 'facemenu-background-menu 'menu-enable '(facemenu-enable-faces-p)) 199 200;;; Condition for enabling menu items that set faces. 201(defun facemenu-enable-faces-p () 202 (not (and font-lock-mode font-lock-defaults))) 203 204;;;###autoload 205(defvar facemenu-special-menu 206 (let ((map (make-sparse-keymap "Special"))) 207 (define-key map [?s] (cons (purecopy "Remove Special") 208 'facemenu-remove-special)) 209 (define-key map [?t] (cons (purecopy "Intangible") 210 'facemenu-set-intangible)) 211 (define-key map [?v] (cons (purecopy "Invisible") 212 'facemenu-set-invisible)) 213 (define-key map [?r] (cons (purecopy "Read-Only") 214 'facemenu-set-read-only)) 215 map) 216 "Menu keymap for non-face text-properties.") 217;;;###autoload 218(defalias 'facemenu-special-menu facemenu-special-menu) 219 220;;;###autoload 221(defvar facemenu-justification-menu 222 (let ((map (make-sparse-keymap "Justification"))) 223 (define-key map [?c] (cons (purecopy "Center") 'set-justification-center)) 224 (define-key map [?b] (cons (purecopy "Full") 'set-justification-full)) 225 (define-key map [?r] (cons (purecopy "Right") 'set-justification-right)) 226 (define-key map [?l] (cons (purecopy "Left") 'set-justification-left)) 227 (define-key map [?u] (cons (purecopy "Unfilled") 'set-justification-none)) 228 map) 229 "Submenu for text justification commands.") 230;;;###autoload 231(defalias 'facemenu-justification-menu facemenu-justification-menu) 232 233;;;###autoload 234(defvar facemenu-indentation-menu 235 (let ((map (make-sparse-keymap "Indentation"))) 236 (define-key map [decrease-right-margin] 237 (cons (purecopy "Indent Right Less") 'decrease-right-margin)) 238 (define-key map [increase-right-margin] 239 (cons (purecopy "Indent Right More") 'increase-right-margin)) 240 (define-key map [decrease-left-margin] 241 (cons (purecopy "Indent Less") 'decrease-left-margin)) 242 (define-key map [increase-left-margin] 243 (cons (purecopy "Indent More") 'increase-left-margin)) 244 map) 245 "Submenu for indentation commands.") 246;;;###autoload 247(defalias 'facemenu-indentation-menu facemenu-indentation-menu) 248 249;; This is split up to avoid an overlong line in loaddefs.el. 250;;;###autoload 251(defvar facemenu-menu nil 252 "Facemenu top-level menu keymap.") 253;;;###autoload 254(setq facemenu-menu (make-sparse-keymap "Text Properties")) 255;;;###autoload 256(let ((map facemenu-menu)) 257 (define-key map [dc] (cons (purecopy "Display Colors") 'list-colors-display)) 258 (define-key map [df] (cons (purecopy "Display Faces") 'list-faces-display)) 259 (define-key map [dp] (cons (purecopy "Describe Properties") 260 'describe-text-properties)) 261 (define-key map [ra] (cons (purecopy "Remove Text Properties") 262 'facemenu-remove-all)) 263 (define-key map [rm] (cons (purecopy "Remove Face Properties") 264 'facemenu-remove-face-props)) 265 (define-key map [s1] (list (purecopy "--")))) 266;;;###autoload 267(let ((map facemenu-menu)) 268 (define-key map [in] (cons (purecopy "Indentation") 269 'facemenu-indentation-menu)) 270 (define-key map [ju] (cons (purecopy "Justification") 271 'facemenu-justification-menu)) 272 (define-key map [s2] (list (purecopy "--"))) 273 (define-key map [sp] (cons (purecopy "Special Properties") 274 'facemenu-special-menu)) 275 (define-key map [bg] (cons (purecopy "Background Color") 276 'facemenu-background-menu)) 277 (define-key map [fg] (cons (purecopy "Foreground Color") 278 'facemenu-foreground-menu)) 279 (define-key map [fc] (cons (purecopy "Face") 280 'facemenu-face-menu))) 281;;;###autoload 282(defalias 'facemenu-menu facemenu-menu) 283 284(defvar facemenu-keymap 285 (let ((map (make-sparse-keymap "Set face"))) 286 (define-key map "o" (cons (purecopy "Other...") 'facemenu-set-face)) 287 map) 288 "Keymap for face-changing commands. 289`Facemenu-update' fills in the keymap according to the bindings 290requested in `facemenu-keybindings'.") 291(defalias 'facemenu-keymap facemenu-keymap) 292 293 294(defcustom facemenu-add-face-function nil 295 "Function called at beginning of text to change or nil. 296This function is passed the FACE to set and END of text to change, and must 297return a string which is inserted. It may set `facemenu-end-add-face'." 298 :type '(choice (const :tag "None" nil) 299 function) 300 :group 'facemenu) 301 302(defcustom facemenu-end-add-face nil 303 "String to insert or function called at end of text to change or nil. 304This function is passed the FACE to set, and must return a string which is 305inserted." 306 :type '(choice (const :tag "None" nil) 307 string 308 function) 309 :group 'facemenu) 310 311(defcustom facemenu-remove-face-function nil 312 "When non-nil, this is a function called to remove faces. 313This function is passed the START and END of text to change. 314May also be t meaning to use `facemenu-add-face-function'." 315 :type '(choice (const :tag "None" nil) 316 (const :tag "Use add-face" t) 317 function) 318 :group 'facemenu) 319 320;;; Internal Variables 321 322(defvar facemenu-color-alist nil 323 "Alist of colors, used for completion. 324If this is nil, then the value of (defined-colors) is used.") 325 326(defun facemenu-update () 327 "Add or update the \"Face\" menu in the menu bar. 328You can call this to update things if you change any of the menu configuration 329variables." 330 (interactive) 331 332 ;; Add each defined face to the menu. 333 (facemenu-iterate 'facemenu-add-new-face 334 (facemenu-complete-face-list facemenu-keybindings))) 335 336;;;###autoload 337(defun facemenu-set-face (face &optional start end) 338 "Apply FACE to the region or next character typed. 339 340If the region is active (normally true except in Transient 341Mark mode) and nonempty, and there is no prefix argument, 342this command applies FACE to the region. Otherwise, it applies FACE 343to the faces to use for the next character 344inserted. (Moving point or switching buffers before typing 345a character to insert cancels the specification.) 346 347If FACE is `default', to \"apply\" it means clearing 348the list of faces to be used. For any other value of FACE, 349to \"apply\" it means putting FACE at the front of the list 350of faces to be used, and removing any faces further 351along in the list that would be completely overridden by 352preceding faces (including FACE). 353 354This command can also add FACE to the menu of faces, 355if `facemenu-listed-faces' says to do that." 356 (interactive (list (progn 357 (barf-if-buffer-read-only) 358 (read-face-name "Use face")) 359 (if (and mark-active (not current-prefix-arg)) 360 (region-beginning)) 361 (if (and mark-active (not current-prefix-arg)) 362 (region-end)))) 363 (facemenu-add-new-face face) 364 (facemenu-add-face face start end)) 365 366;;;###autoload 367(defun facemenu-set-foreground (color &optional start end) 368 "Set the foreground COLOR of the region or next character typed. 369This command reads the color in the minibuffer. 370 371If the region is active (normally true except in Transient Mark mode) 372and there is no prefix argument, this command sets the region to the 373requested face. 374 375Otherwise, this command specifies the face for the next character 376inserted. Moving point or switching buffers before 377typing a character to insert cancels the specification." 378 (interactive (list (progn 379 (barf-if-buffer-read-only) 380 (facemenu-read-color "Foreground color: ")) 381 (if (and mark-active (not current-prefix-arg)) 382 (region-beginning)) 383 (if (and mark-active (not current-prefix-arg)) 384 (region-end)))) 385 (facemenu-set-face-from-menu 386 (facemenu-add-new-color color 'facemenu-foreground-menu) 387 start end)) 388 389;;;###autoload 390(defun facemenu-set-background (color &optional start end) 391 "Set the background COLOR of the region or next character typed. 392This command reads the color in the minibuffer. 393 394If the region is active (normally true except in Transient Mark mode) 395and there is no prefix argument, this command sets the region to the 396requested face. 397 398Otherwise, this command specifies the face for the next character 399inserted. Moving point or switching buffers before 400typing a character to insert cancels the specification." 401 (interactive (list (progn 402 (barf-if-buffer-read-only) 403 (facemenu-read-color "Background color: ")) 404 (if (and mark-active (not current-prefix-arg)) 405 (region-beginning)) 406 (if (and mark-active (not current-prefix-arg)) 407 (region-end)))) 408 (facemenu-set-face-from-menu 409 (facemenu-add-new-color color 'facemenu-background-menu) 410 start end)) 411 412;;;###autoload 413(defun facemenu-set-face-from-menu (face start end) 414 "Set the FACE of the region or next character typed. 415This function is designed to be called from a menu; FACE is determined 416using the event type of the menu entry. If FACE is a symbol whose 417name starts with \"fg:\" or \"bg:\", then this functions sets the 418foreground or background to the color specified by the rest of the 419symbol's name. Any other symbol is considered the name of a face. 420 421If the region is active (normally true except in Transient Mark mode) 422and there is no prefix argument, this command sets the region to the 423requested face. 424 425Otherwise, this command specifies the face for the next character 426inserted. Moving point or switching buffers before typing a character 427to insert cancels the specification." 428 (interactive (list last-command-event 429 (if (and mark-active (not current-prefix-arg)) 430 (region-beginning)) 431 (if (and mark-active (not current-prefix-arg)) 432 (region-end)))) 433 (barf-if-buffer-read-only) 434 (facemenu-add-face 435 (let ((fn (symbol-name face))) 436 (if (string-match "\\`\\([fb]\\)g:\\(.+\\)" fn) 437 (list (list (if (string= (match-string 1 fn) "f") 438 :foreground 439 :background) 440 (match-string 2 fn))) 441 face)) 442 start end)) 443 444;;;###autoload 445(defun facemenu-set-invisible (start end) 446 "Make the region invisible. 447This sets the `invisible' text property; it can be undone with 448`facemenu-remove-special'." 449 (interactive "r") 450 (add-text-properties start end '(invisible t))) 451 452;;;###autoload 453(defun facemenu-set-intangible (start end) 454 "Make the region intangible: disallow moving into it. 455This sets the `intangible' text property; it can be undone with 456`facemenu-remove-special'." 457 (interactive "r") 458 (add-text-properties start end '(intangible t))) 459 460;;;###autoload 461(defun facemenu-set-read-only (start end) 462 "Make the region unmodifiable. 463This sets the `read-only' text property; it can be undone with 464`facemenu-remove-special'." 465 (interactive "r") 466 (add-text-properties start end '(read-only t))) 467 468;;;###autoload 469(defun facemenu-remove-face-props (start end) 470 "Remove `face' and `mouse-face' text properties." 471 (interactive "*r") ; error if buffer is read-only despite the next line. 472 (let ((inhibit-read-only t)) 473 (remove-text-properties 474 start end '(face nil mouse-face nil)))) 475 476;;;###autoload 477(defun facemenu-remove-all (start end) 478 "Remove all text properties from the region." 479 (interactive "*r") ; error if buffer is read-only despite the next line. 480 (let ((inhibit-read-only t)) 481 (set-text-properties start end nil))) 482 483;;;###autoload 484(defun facemenu-remove-special (start end) 485 "Remove all the \"special\" text properties from the region. 486These special properties include `invisible', `intangible' and `read-only'." 487 (interactive "*r") ; error if buffer is read-only despite the next line. 488 (let ((inhibit-read-only t)) 489 (remove-text-properties 490 start end '(invisible nil intangible nil read-only nil)))) 491 492;;;###autoload 493(defun facemenu-read-color (&optional prompt) 494 "Read a color using the minibuffer." 495 (let* ((completion-ignore-case t) 496 (col (completing-read (or prompt "Color: ") 497 (or facemenu-color-alist 498 (defined-colors)) 499 nil t))) 500 (if (equal "" col) 501 nil 502 col))) 503 504;;;###autoload 505(defun list-colors-display (&optional list buffer-name) 506 "Display names of defined colors, and show what they look like. 507If the optional argument LIST is non-nil, it should be a list of 508colors to display. Otherwise, this command computes a list of 509colors that the current display can handle. If the optional 510argument BUFFER-NAME is nil, it defaults to *Colors*." 511 (interactive) 512 (when (and (null list) (> (display-color-cells) 0)) 513 (setq list (list-colors-duplicates (defined-colors))) 514 (when (memq (display-visual-class) '(gray-scale pseudo-color direct-color)) 515 ;; Don't show more than what the display can handle. 516 (let ((lc (nthcdr (1- (display-color-cells)) list))) 517 (if lc 518 (setcdr lc nil))))) 519 (with-output-to-temp-buffer (or buffer-name "*Colors*") 520 (save-excursion 521 (set-buffer standard-output) 522 (setq truncate-lines t) 523 (if temp-buffer-show-function 524 (list-colors-print list) 525 ;; Call list-colors-print from temp-buffer-show-hook 526 ;; to get the right value of window-width in list-colors-print 527 ;; after the buffer is displayed. 528 (add-hook 'temp-buffer-show-hook 529 (lambda () (list-colors-print list)) nil t))))) 530 531(defun list-colors-print (list) 532 (dolist (color list) 533 (if (consp color) 534 (if (cdr color) 535 (setq color (sort color (lambda (a b) 536 (string< (downcase a) 537 (downcase b)))))) 538 (setq color (list color))) 539 (put-text-property 540 (prog1 (point) 541 (insert (car color)) 542 (indent-to 22)) 543 (point) 544 'face (cons 'background-color (car color))) 545 (put-text-property 546 (prog1 (point) 547 (insert " " (if (cdr color) 548 (mapconcat 'identity (cdr color) ", ") 549 (car color)))) 550 (point) 551 'face (cons 'foreground-color (car color))) 552 (indent-to (max (- (window-width) 8) 44)) 553 (insert (apply 'format "#%02x%02x%02x" 554 (mapcar (lambda (c) (lsh c -8)) 555 (color-values (car color))))) 556 557 (insert "\n")) 558 (goto-char (point-min))) 559 560(defun list-colors-duplicates (&optional list) 561 "Return a list of colors with grouped duplicate colors. 562If a color has no duplicates, then the element of the returned list 563has the form '(COLOR-NAME). The element of the returned list with 564duplicate colors has the form '(COLOR-NAME DUPLICATE-COLOR-NAME ...). 565This function uses the predicate `facemenu-color-equal' to compare 566color names. If the optional argument LIST is non-nil, it should 567be a list of colors to display. Otherwise, this function uses 568a list of colors that the current display can handle." 569 (let* ((list (mapcar 'list (or list (defined-colors)))) 570 (l list)) 571 (while (cdr l) 572 (if (and (facemenu-color-equal (car (car l)) (car (car (cdr l)))) 573 (not (if (boundp 'w32-default-color-map) 574 (not (assoc (car (car l)) w32-default-color-map))))) 575 (progn 576 (setcdr (car l) (cons (car (car (cdr l))) (cdr (car l)))) 577 (setcdr l (cdr (cdr l)))) 578 (setq l (cdr l)))) 579 list)) 580 581(defun facemenu-color-equal (a b) 582 "Return t if colors A and B are the same color. 583A and B should be strings naming colors. 584This function queries the display system to find out what the color 585names mean. It returns nil if the colors differ or if it can't 586determine the correct answer." 587 (cond ((equal a b) t) 588 ((equal (color-values a) (color-values b))))) 589 590(defun facemenu-add-face (face &optional start end) 591 "Add FACE to text between START and END. 592If START is nil or START to END is empty, add FACE to next typed character 593instead. For each section of that region that has a different face property, 594FACE will be consed onto it, and other faces that are completely hidden by 595that will be removed from the list. 596If `facemenu-add-face-function' and maybe `facemenu-end-add-face' are non-nil, 597they are used to set the face information. 598 599As a special case, if FACE is `default', then the region is left with NO face 600text property. Otherwise, selecting the default face would not have any 601effect. See `facemenu-remove-face-function'." 602 (interactive "*xFace: \nr") 603 (if (and (eq face 'default) 604 (not (eq facemenu-remove-face-function t))) 605 (if facemenu-remove-face-function 606 (funcall facemenu-remove-face-function start end) 607 (if (and start (< start end)) 608 (remove-text-properties start end '(face default)) 609 (setq self-insert-face 'default 610 self-insert-face-command this-command))) 611 (if facemenu-add-face-function 612 (save-excursion 613 (if end (goto-char end)) 614 (save-excursion 615 (if start (goto-char start)) 616 (insert-before-markers 617 (funcall facemenu-add-face-function face end))) 618 (if facemenu-end-add-face 619 (insert (if (stringp facemenu-end-add-face) 620 facemenu-end-add-face 621 (funcall facemenu-end-add-face face))))) 622 (if (and start (< start end)) 623 (let ((part-start start) part-end) 624 (while (not (= part-start end)) 625 (setq part-end (next-single-property-change part-start 'face 626 nil end)) 627 (let ((prev (get-text-property part-start 'face))) 628 (put-text-property part-start part-end 'face 629 (if (null prev) 630 face 631 (facemenu-active-faces 632 (cons face 633 (if (listp prev) 634 prev 635 (list prev))) 636 ;; Specify the selected frame 637 ;; because nil would mean to use 638 ;; the new-frame default settings, 639 ;; and those are usually nil. 640 (selected-frame))))) 641 (setq part-start part-end))) 642 (setq self-insert-face (if (eq last-command self-insert-face-command) 643 (cons face (if (listp self-insert-face) 644 self-insert-face 645 (list self-insert-face))) 646 face) 647 self-insert-face-command this-command)))) 648 (unless (facemenu-enable-faces-p) 649 (message "Font-lock mode will override any faces you set in this buffer"))) 650 651(defun facemenu-active-faces (face-list &optional frame) 652 "Return from FACE-LIST those faces that would be used for display. 653This means each face attribute is not specified in a face earlier in FACE-LIST 654and such a face is therefore active when used to display text. 655If the optional argument FRAME is given, use the faces in that frame; otherwise 656use the selected frame. If t, then the global, non-frame faces are used." 657 (let* ((mask-atts (copy-sequence 658 (if (consp (car face-list)) 659 (face-attributes-as-vector (car face-list)) 660 (or (internal-lisp-face-p (car face-list) frame) 661 (check-face (car face-list)))))) 662 (active-list (list (car face-list))) 663 (face-list (cdr face-list)) 664 (mask-len (length mask-atts))) 665 (while face-list 666 (if (let ((face-atts 667 (if (consp (car face-list)) 668 (face-attributes-as-vector (car face-list)) 669 (or (internal-lisp-face-p (car face-list) frame) 670 (check-face (car face-list))))) 671 (i mask-len) 672 (useful nil)) 673 (while (>= (setq i (1- i)) 0) 674 (and (not (memq (aref face-atts i) '(nil unspecified))) 675 (memq (aref mask-atts i) '(nil unspecified)) 676 (aset mask-atts i (setq useful t)))) 677 useful) 678 (setq active-list (cons (car face-list) active-list))) 679 (setq face-list (cdr face-list))) 680 (nreverse active-list))) 681 682(defun facemenu-add-new-face (face) 683 "Add FACE (a face) to the Face menu if `facemenu-listed-faces' says so. 684This is called whenever you create a new face, and at other times." 685 (let* (name 686 symbol 687 menu docstring 688 (key (cdr (assoc face facemenu-keybindings))) 689 function menu-val) 690 (if (symbolp face) 691 (setq name (symbol-name face) 692 symbol face) 693 (setq name face 694 symbol (intern name))) 695 (setq menu 'facemenu-face-menu) 696 (setq docstring 697 (format "Select face `%s' for subsequent insertion. 698If the mark is active and there is no prefix argument, 699apply face `%s' to the region instead. 700This command was defined by `facemenu-add-new-face'." 701 name name)) 702 (cond ((facemenu-iterate ; check if equivalent face is already in the menu 703 (lambda (m) (and (listp m) 704 (symbolp (car m)) 705 ;; Avoid error in face-equal 706 ;; when a non-face is erroneously present. 707 (facep (car m)) 708 (face-equal (car m) symbol))) 709 (cdr (symbol-function menu)))) 710 ;; Faces with a keyboard equivalent. These go at the front. 711 (key 712 (setq function (intern (concat "facemenu-set-" name))) 713 (fset function 714 `(lambda () 715 ,docstring 716 (interactive) 717 (facemenu-set-face 718 (quote ,symbol) 719 (if (and mark-active (not current-prefix-arg)) 720 (region-beginning)) 721 (if (and mark-active (not current-prefix-arg)) 722 (region-end))))) 723 (define-key 'facemenu-keymap key (cons name function)) 724 (define-key menu key (cons name function))) 725 ;; Faces with no keyboard equivalent. Figure out where to put it: 726 ((or (eq t facemenu-listed-faces) 727 (memq symbol facemenu-listed-faces)) 728 (setq key (vector symbol) 729 function 'facemenu-set-face-from-menu 730 menu-val (symbol-function menu)) 731 (if (and facemenu-new-faces-at-end 732 (> (length menu-val) 3)) 733 (define-key-after menu-val key (cons name function) 734 (car (nth (- (length menu-val) 3) menu-val))) 735 (define-key menu key (cons name function)))))) 736 nil) ; Return nil for facemenu-iterate 737 738(defun facemenu-add-new-color (color menu) 739 "Add COLOR (a color name string) to the appropriate Face menu. 740MENU should be `facemenu-foreground-menu' or `facemenu-background-menu'. 741Return the event type (a symbol) of the added menu entry. 742 743This is called whenever you use a new color." 744 (let (symbol docstring) 745 (unless (color-defined-p color) 746 (error "Color `%s' undefined" color)) 747 (cond ((eq menu 'facemenu-foreground-menu) 748 (setq docstring 749 (format "Select foreground color %s for subsequent insertion." 750 color) 751 symbol (intern (concat "fg:" color)))) 752 ((eq menu 'facemenu-background-menu) 753 (setq docstring 754 (format "Select background color %s for subsequent insertion." 755 color) 756 symbol (intern (concat "bg:" color)))) 757 (t (error "MENU should be `facemenu-foreground-menu' or `facemenu-background-menu'"))) 758 (unless (facemenu-iterate ; Check if color is already in the menu. 759 (lambda (m) (and (listp m) 760 (eq (car m) symbol))) 761 (cdr (symbol-function menu))) 762 ;; Color is not in the menu. Figure out where to put it. 763 (let ((key (vector symbol)) 764 (function 'facemenu-set-face-from-menu) 765 (menu-val (symbol-function menu))) 766 (if (and facemenu-new-faces-at-end 767 (> (length menu-val) 3)) 768 (define-key-after menu-val key (cons color function) 769 (car (nth (- (length menu-val) 3) menu-val))) 770 (define-key menu key (cons color function))))) 771 symbol)) 772 773(defun facemenu-complete-face-list (&optional oldlist) 774 "Return list of all faces that look different. 775Starts with given ALIST of faces, and adds elements only if they display 776differently from any face already on the list. 777The faces on ALIST will end up at the end of the returned list, in reverse 778order." 779 (let ((list (nreverse (mapcar 'car oldlist)))) 780 (facemenu-iterate 781 (lambda (new-face) 782 (if (not (memq new-face list)) 783 (setq list (cons new-face list))) 784 nil) 785 (nreverse (face-list))) 786 list)) 787 788(defun facemenu-iterate (func list) 789 "Apply FUNC to each element of LIST until one returns non-nil. 790Returns the non-nil value it found, or nil if all were nil." 791 (while (and list (not (funcall func (car list)))) 792 (setq list (cdr list))) 793 (car list)) 794 795(facemenu-update) 796 797(provide 'facemenu) 798 799;;; arch-tag: 85f6d02b-9085-420e-b651-0678f0e9c7eb 800;;; facemenu.el ends here 801