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