1 ;;; x-faces.el --- X-specific face frobnication, aka black magic.
3 ;; Copyright (C) 1992-4, 1997 Free Software Foundation, Inc.
4 ;; Copyright (C) 1995, 1996 Ben Wing.
6 ;; Author: Jamie Zawinski <jwz@jwz.org>
7 ;; Maintainer: SXEmacs Development Team
8 ;; Keywords: extensions, internal, dumped
10 ;; This file is part of SXEmacs.
12 ;; SXEmacs is free software: you can redistribute it and/or modify
13 ;; it under the terms of the GNU General Public License as published by
14 ;; the Free Software Foundation, either version 3 of the License, or
15 ;; (at your option) any later version.
17 ;; SXEmacs is distributed in the hope that it will be useful,
18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ;; GNU General Public License for more details.
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with this program. If not, see <http://www.gnu.org/licenses/>.
25 ;;; Synched up with: Not synched.
29 ;; This file is dumped with SXEmacs (when X support is compiled in).
31 ;; Modified by: Chuck Thompson
32 ;; Modified by: Ben Wing
33 ;; Modified by: Martin Buchholz
35 ;; This file does the magic to parse X font names, and make sure that the
36 ;; default and modeline attributes of new frames are specified enough.
38 ;; The resource-manager syntax for faces is
40 ;; Emacs.bold.attributeFont: font-name
41 ;; Emacs.bold.attributeForeground: fg
42 ;; Emacs.bold.attributeBackground: bg
43 ;; Emacs.bold.attributeBackgroundPixmap: file
44 ;; Emacs.bold.attributeUnderline: true/false
45 ;; Emacs.bold.attributeStrikethru: true/false
47 ;; You can specify the properties of a face on a per-frame basis. For
48 ;; example, to have the "isearch" face use a red foreground on frames
49 ;; named "emacs" (the default) but use a blue foreground on frames that
50 ;; you create named "debugger", you could do
52 ;; Emacs*emacs.isearch.attributeForeground: red
53 ;; Emacs*debugger.isearch.attributeForeground: blue
55 ;; Generally things that make faces won't set any of the face attributes if
56 ;; you have already given them values via the resource database. You can
57 ;; also change this stuff from your .emacs file, by using the functions
58 ;; set-face-foreground, set-face-font, etc. See the code in this file, and
63 (defconst x-font-regexp nil)
64 (defconst x-font-regexp-head nil)
65 (defconst x-font-regexp-head-2 nil)
66 (defconst x-font-regexp-weight nil)
67 (defconst x-font-regexp-slant nil)
68 (defconst x-font-regexp-pixel nil)
69 (defconst x-font-regexp-point nil)
70 (defconst x-font-regexp-foundry-and-family nil)
71 (defconst x-font-regexp-registry-and-encoding nil)
72 (defconst x-font-regexp-spacing nil)
74 ;;; Regexps matching font names in "Host Portable Character Representation."
79 (weight #r"\(bold\|demibold\|medium\|black\)") ; 1
80 ; (weight\? "\\(\\*\\|bold\\|demibold\\|medium\\|\\)") ; 1
81 (weight\? #r"\([^-]*\)") ; 1
82 (slant #r"\([ior]\)") ; 2
83 ; (slant\? "\\([ior?*]?\\)") ; 2
84 (slant\? #r"\([^-]?\)") ; 2
85 ; (swidth "\\(\\*\\|normal\\|semicondensed\\|\\)") ; 3
86 (swidth #r"\([^-]*\)") ; 3
87 ; (adstyle "\\(\\*\\|sans\\|\\)") ; 4
88 (adstyle #r"\([^-]*\)") ; 4
89 (pixelsize #r"\(\*\|[0-9]+\)") ; 5
90 (pointsize #r"\(\*\|0\|[0-9][0-9]+\)") ; 6
91 ; (resx "\\(\\*\\|[0-9][0-9]+\\)") ; 7
92 ; (resy "\\(\\*\\|[0-9][0-9]+\\)") ; 8
93 (resx #r"\([*0]\|[0-9][0-9]+\)") ; 7
94 (resy #r"\([*0]\|[0-9][0-9]+\)") ; 8
96 (avgwidth #r"\(\*\|[0-9]+\)") ; 9
97 (registry "[^-]*") ; some fonts have omitted registries
98 ; (encoding ".+") ; note that encoding may contain "-"...
99 (encoding "[^-]+") ; false!
102 (concat #r"\`\*?[-?*]"
103 foundry - family - weight\? - slant\? - swidth - adstyle -
104 pixelsize - pointsize - resx - resy - spacing - avgwidth -
105 registry - encoding "\\'"
107 (setq x-font-regexp-head
108 (concat "\\`[-?*]" foundry - family - weight\? - slant\?
110 (setq x-font-regexp-head-2
111 (concat "\\`[-?*]" foundry - family - weight\? - slant\?
112 - swidth - adstyle - pixelsize - pointsize
114 (setq x-font-regexp-slant (concat - slant -))
115 (setq x-font-regexp-weight (concat - weight -))
116 ;; if we can't match any of the more specific regexps (unfortunate) then
117 ;; look for digits; assume 2+ digits is 10ths of points, and 1-2 digits
118 ;; is pixels. Bogus as hell.
119 (setq x-font-regexp-pixel #r"[-?*]\([0-9][0-9]?\)[-?*]")
120 (setq x-font-regexp-point #r"[-?*]\([0-9][0-9]+\)[-?*]")
121 ;; the following two are used by x-font-menu.el.
122 (setq x-font-regexp-foundry-and-family
123 (concat "\\`[-?*]" foundry - "\\(" family "\\)" -))
124 (setq x-font-regexp-registry-and-encoding
125 (concat - "\\(" registry "\\)" - "\\(" encoding "\\)\\'"))
126 (setq x-font-regexp-spacing
127 (concat - "\\(" spacing "\\)" - avgwidth
128 - registry - encoding "\\'"))
131 ;; A "loser font" is something like "8x13" -> "8x13bold".
132 ;; These are supported only through extreme generosity.
133 (defconst x-loser-font-regexp #r"\`[0-9]+x[0-9]+\'")
135 (defun x-frob-font-weight (font which)
136 (if (font-instance-p font) (setq font (font-instance-name font)))
137 (cond ((null font) nil)
138 ((or (string-match x-font-regexp font)
139 (string-match x-font-regexp-head font)
140 (string-match x-font-regexp-weight font))
141 (concat (substring font 0 (match-beginning 1)) which
142 (substring font (match-end 1))))
143 ((string-match x-loser-font-regexp font)
147 (defun x-frob-font-slant (font which)
148 (if (font-instance-p font) (setq font (font-instance-name font)))
149 (cond ((null font) nil)
150 ((or (string-match x-font-regexp font)
151 (string-match x-font-regexp-head font))
152 (concat (substring font 0 (match-beginning 2)) which
153 (substring font (match-end 2))))
154 ((string-match x-font-regexp-slant font)
155 (concat (substring font 0 (match-beginning 1)) which
156 (substring font (match-end 1))))
157 ((string-match x-loser-font-regexp font)
161 (defun x-make-font-bold (font &optional device)
162 "Given an X font specification, this attempts to make a `bold' font.
163 If it fails, it returns nil."
164 ;; Certain Type1 fonts know "bold" as "black"...
165 (or (try-font-name (x-frob-font-weight font "bold") device)
166 (try-font-name (x-frob-font-weight font "black") device)
167 (try-font-name (x-frob-font-weight font "demibold") device)))
169 (defun x-make-font-unbold (font &optional device)
170 "Given an X font specification, this attempts to make a non-bold font.
171 If it fails, it returns nil."
172 (try-font-name (x-frob-font-weight font "medium") device))
174 (defcustom try-oblique-before-italic-fonts nil
175 "*If nil, italic fonts are searched before oblique fonts.
176 If non-nil, oblique fonts are tried before italic fonts. This is mostly
177 applicable to adobe-courier fonts"
180 (define-obsolete-variable-alias '*try-oblique-before-italic-fonts*
181 'try-oblique-before-italic-fonts)
183 (defun x-make-font-italic (font &optional device)
184 "Given an X font specification, this attempts to make an `italic' font.
185 If it fails, it returns nil."
186 (if try-oblique-before-italic-fonts
187 (or (try-font-name (x-frob-font-slant font "o") device)
188 (try-font-name (x-frob-font-slant font "i") device))
189 (or (try-font-name (x-frob-font-slant font "i") device)
190 (try-font-name (x-frob-font-slant font "o") device))))
192 (defun x-make-font-unitalic (font &optional device)
193 "Given an X font specification, this attempts to make a non-italic font.
194 If it fails, it returns nil."
195 (try-font-name (x-frob-font-slant font "r") device))
197 (defun x-make-font-bold-italic (font &optional device)
198 "Given an X font specification, this attempts to make a `bold-italic' font.
199 If it fails, it returns nil."
200 ;; This is haired up to avoid loading the "intermediate" fonts.
201 (if try-oblique-before-italic-fonts
203 (x-frob-font-slant (x-frob-font-weight font "bold") "o") device)
205 (x-frob-font-slant (x-frob-font-weight font "bold") "i") device)
207 (x-frob-font-slant (x-frob-font-weight font "black") "o") device)
209 (x-frob-font-slant (x-frob-font-weight font "black") "i") device)
211 (x-frob-font-slant (x-frob-font-weight font "demibold") "o") device)
213 (x-frob-font-slant (x-frob-font-weight font "demibold") "i") device))
215 (x-frob-font-slant (x-frob-font-weight font "bold") "i") device)
217 (x-frob-font-slant (x-frob-font-weight font "bold") "o") device)
219 (x-frob-font-slant (x-frob-font-weight font "black") "i") device)
221 (x-frob-font-slant (x-frob-font-weight font "black") "o") device)
223 (x-frob-font-slant (x-frob-font-weight font "demibold") "i") device)
225 (x-frob-font-slant (x-frob-font-weight font "demibold") "o") device))))
227 (defun x-font-size (font)
228 "Return the nominal size of the given font.
229 This is done by parsing its name, so it's likely to lose.
230 X fonts can be specified (by the user) in either pixels or 10ths of points,
231 and this returns the first one it finds, so you have to decide which units
232 the returned value is measured in yourself..."
233 (if (font-instance-p font) (setq font (font-instance-name font)))
234 (cond ((or (string-match x-font-regexp font)
235 (string-match x-font-regexp-head-2 font))
236 (string-to-int (substring font (match-beginning 6) (match-end 6))))
237 ((or (string-match x-font-regexp-pixel font)
238 (string-match x-font-regexp-point font))
239 (string-to-int (substring font (match-beginning 1) (match-end 1))))
242 ;; Given a font name, this function returns a list describing all fonts
243 ;; of all sizes that otherwise match the given font spec. Each element
244 ;; in the list is a list of three items: the pixel size of the font,
245 ;; the point size (in 1/10ths of a point) of the font, and the fully-
246 ;; qualified font name. The first two values may be zero; this
247 ;; refers to a scalable font.
249 (defun x-available-font-sizes (font device)
250 (if (font-instance-p font) (setq font (font-instance-name font)))
251 (cond ((string-match x-font-regexp font)
252 ;; turn pixelsize, pointsize, and avgwidth into wildcards
254 (concat (substring font 0 (match-beginning 5)) "*"
255 (substring font (match-end 5) (match-beginning 6)) "*"
256 (substring font (match-end 6) (match-beginning 9)) "*"
257 (substring font (match-end 9) (match-end 0)))))
258 ((string-match x-font-regexp-head-2 font)
259 ;; turn pixelsize and pointsize into wildcards
261 (concat (substring font 0 (match-beginning 5)) "*"
262 (substring font (match-end 5) (match-beginning 6)) "*"
263 (substring font (match-end 6) (match-end 0)))))
264 ((string-match #r"[-?*]\([0-9]+\)[-?*]" font)
265 ;; Turn the first integer we match into a wildcard.
266 ;; This is pretty dubious...
268 (concat (substring font 0 (match-beginning 1)) "*"
269 (substring font (match-end 1) (match-end 0))))))
274 (and (string-match x-font-regexp name)
276 (string-to-int (substring name (match-beginning 5)
278 (string-to-int (substring name (match-beginning 6)
281 (list-fonts font device)))
282 (function (lambda (x y) (if (= (nth 1 x) (nth 1 y))
283 (< (nth 0 x) (nth 0 y))
284 (< (nth 1 x) (nth 1 y)))))))
286 ;; Given a font name, this attempts to construct a valid font name for
287 ;; DEVICE whose size is the next smaller (if UP-P is nil) or larger
288 ;; (if UP-P is t) size and whose other characteristics are the same
289 ;; as the given font.
291 (defun x-frob-font-size (font up-p device)
292 (if (stringp font) (setq font (make-font-instance font device)))
293 (if (font-instance-p font) (setq font (font-instance-truename font)))
294 (let ((available (and font
295 (x-available-font-sizes font device))))
297 ((null available) nil)
298 ((or (= 0 (nth 0 (car available)))
299 (= 0 (nth 1 (car available))))
300 ;; R5 scalable fonts: change size by 1 point.
301 ;; If they're scalable the first font will have pixel or point = 0.
302 ;; Sometimes one is 0 and the other isn't (if it's a bitmap font that
303 ;; can be scaled), sometimes both are (if it's a true outline font).
304 (let ((name (nth 2 (car available)))
306 (or (string-match x-font-regexp font) (error "can't parse %S" font))
307 (setq old-size (string-to-int
308 (substring font (match-beginning 6) (match-end 6))))
309 (or (> old-size 0) (error "font truename has 0 pointsize?"))
310 (or (string-match x-font-regexp name) (error "can't parse %S" name))
311 ;; turn pixelsize into a wildcard, and make pointsize be +/- 10,
312 ;; which is +/- 1 point. All other fields stay the same as they
313 ;; were in the "template" font returned by x-available-font-sizes.
315 ;; #### But this might return the same font: for example, if the
316 ;; truename of "-*-courier-medium-r-normal--*-230-75-75-m-0-*"
317 ;; is "...-240-..." (instead of 230) then this loses, because
318 ;; the 230 that was passed in as an arg got turned into 240
319 ;; by the call to font-instance-truename; then we decrement that
320 ;; by 10 and return the result which is the same. I think the
321 ;; way to fix this is to make this be a loop that keeps trying
322 ;; progressively larger pointsize deltas until it finds one
323 ;; whose truename differs. Have to be careful to avoid infinite
324 ;; loops at the upper end...
326 (concat (substring name 0 (match-beginning 5)) "*"
327 (substring name (match-end 5) (match-beginning 6))
328 (int-to-string (+ old-size (if up-p 10 -10)))
329 (substring name (match-end 6) (match-end 0)))))
331 ;; non-scalable fonts: take the next available size.
332 (let ((rest available)
335 (setq font (downcase font))
337 (cond ((and (not up-p) (equal font (downcase (nth 2 (car rest)))))
340 ((and up-p (equal font (and last (downcase (nth 2 last)))))
341 (setq result (car rest)
343 (setq last (car rest))
344 (setq rest (cdr rest)))
347 (defun x-find-smaller-font (font &optional device)
348 "Load a new, slightly smaller version of the given font (or font name).
349 Returns the font if it succeeds, nil otherwise.
350 If scalable fonts are available, this returns a font which is 1 point smaller.
351 Otherwise, it returns the next smaller version of this font that is defined."
352 (x-frob-font-size font nil device))
354 (defun x-find-larger-font (font &optional device)
355 "Load a new, slightly larger version of the given font (or font name).
356 Returns the font if it succeeds, nil otherwise.
357 If scalable fonts are available, this returns a font which is 1 point larger.
358 Otherwise, it returns the next larger version of this font that is defined."
359 (x-frob-font-size font t device))
361 (defalias 'x-make-face-bold 'make-face-bold)
362 (defalias 'x-make-face-italic 'make-face-italic)
363 (defalias 'x-make-face-bold-italic 'make-face-bold-italic)
364 (defalias 'x-make-face-unbold 'make-face-unbold)
365 (defalias 'x-make-face-unitalic 'make-face-unitalic)
367 (make-obsolete 'x-make-face-bold 'make-face-bold)
368 (make-obsolete 'x-make-face-italic 'make-face-italic)
369 (make-obsolete 'x-make-face-bold-italic 'make-face-bold-italic)
370 (make-obsolete 'x-make-face-unbold 'make-face-unbold)
371 (make-obsolete 'x-make-face-unitalic 'make-face-unitalic)
374 ;;; internal routines
376 ;;; x-init-face-from-resources is responsible for initializing a
377 ;;; newly-created face from the resource database.
379 ;;; When a new frame is created, it is called from `x-init-frame-faces'
380 ;;; called from `init-frame-faces' called from init_frame_faces()
381 ;;; from Fmake_frame(). In this case it is called once for each existing
382 ;;; face, with the newly-created frame as the argument. It then initializes
383 ;;; the newly-created faces on that frame.
385 ;;; It's also called from `init-device-faces' and
386 ;;; `init-global-faces'.
388 ;;; This had better not signal an error. The frame is in an intermediate
389 ;;; state where signalling an error or entering the debugger would likely
390 ;;; result in a crash.
392 (defun x-init-face-from-resources (face &optional locale set-anyway)
395 ;; These are things like "attributeForeground" instead of simply
396 ;; "foreground" because people tend to do things like "*foreground",
397 ;; which would cause all faces to be fully qualified, making faces
398 ;; inherit attributes in a non-useful way. So we've made them slightly
399 ;; less obvious to specify in order to make them work correctly in
400 ;; more random environments.
402 ;; I think these should be called "face.faceForeground" instead of
403 ;; "face.attributeForeground", but they're the way they are for
404 ;; hysterical reasons. (jwz)
406 (let* ((append (if set-anyway nil 'append))
407 ;; Some faces are initialized before XEmacs is dumped.
408 ;; In order for the X resources to be able to override
409 ;; those settings, such initialization always uses the
410 ;; `default' tag. We remove all specifier specs
411 ;; containing the `default' tag in the locale before
414 ;; The tag order matters here. The spec removal
415 ;; function uses the list cdrs. We want to remove (x
416 ;; default) and (default) specs, not (default x) and (x)
418 (x-tag-set '(x default))
419 (tty-tag-set '(tty default))
421 (face-sym (face-name face))
422 (name (symbol-name face-sym))
423 (fn (x-get-resource-and-maybe-bogosity-check
424 (concat name ".attributeFont")
427 (fg (x-get-resource-and-maybe-bogosity-check
428 (concat name ".attributeForeground")
429 "Face.AttributeForeground"
431 (bg (x-get-resource-and-maybe-bogosity-check
432 (concat name ".attributeBackground")
433 "Face.AttributeBackground"
435 (bgp (x-get-resource-and-maybe-bogosity-check
436 (concat name ".attributeBackgroundPixmap")
437 "Face.AttributeBackgroundPixmap"
439 (ulp (x-get-resource-and-maybe-bogosity-check
440 (concat name ".attributeUnderline")
441 "Face.AttributeUnderline"
443 (stp (x-get-resource-and-maybe-bogosity-check
444 (concat name ".attributeStrikethru")
445 "Face.AttributeStrikethru"
447 ;; we still resource for these TTY-only resources so that
448 ;; you can specify resources for TTY frames/devices. This is
449 ;; useful when you start up your XEmacs on an X display and later
450 ;; open some TTY frames.
451 (hp (x-get-resource-and-maybe-bogosity-check
452 (concat name ".attributeHighlight")
453 "Face.AttributeHighlight"
455 (dp (x-get-resource-and-maybe-bogosity-check
456 (concat name ".attributeDim")
459 (bp (x-get-resource-and-maybe-bogosity-check
460 (concat name ".attributeBlinking")
461 "Face.AttributeBlinking"
463 (rp (x-get-resource-and-maybe-bogosity-check
464 (concat name ".attributeReverse")
465 "Face.AttributeReverse"
469 (cond ((framep locale)
470 (setq device-class (device-class (frame-device locale))))
472 (setq device-class (device-class locale))))
475 (setq tag-set (cons device-class tag-set)
476 x-tag-set (cons device-class x-tag-set)
477 tty-tag-set (cons device-class tty-tag-set)))
480 ;; If this is the default face, then any unspecified properties should
481 ;; be defaulted from the global properties. Can't do this for
482 ;; frames or devices because then, common resource specs like
483 ;; "*Foreground: black" will have unwanted effects.
485 (if (and (or (eq (face-name face) 'default)
486 (eq (face-name face) 'gui-element))
487 (or (null locale) (eq locale 'global)))
489 (or fn (setq fn (x-get-resource
490 "font" "Font" 'string locale nil 'warn)))
491 (or fg (setq fg (x-get-resource
492 "foreground" "Foreground" 'string locale nil
494 (or bg (setq bg (x-get-resource
495 "background" "Background" 'string locale nil
498 ;; "*cursorColor: foo" is equivalent to setting the background of the
501 (if (and (eq (face-name face) 'text-cursor)
502 (or (null locale) (eq locale 'global)))
503 (setq bg (or (x-get-resource
504 "cursorColor" "CursorColor" 'string locale nil 'warn)
506 ;; #### should issue warnings? I think this should be
507 ;; done when the instancing actually happens, but I'm not
508 ;; sure how it should actually be dealt with.
511 ;; Always use the x-tag-set to remove specs, since we don't
512 ;; know whether the predumped face was initialized with an
514 (remove-specifier-specs-matching-tag-set-cdrs (face-font face)
517 ;; If there's no device class then we're initializing
518 ;; globally. This means we should override global
519 ;; defaults for all X device classes.
520 (remove-specifier (face-font face) locale x-tag-set nil))
521 (set-face-font face fn locale 'x append))
522 ;; Kludge-o-rooni. Set the foreground and background resources for
523 ;; X devices only -- otherwise things tend to get all messed up
524 ;; if you start up an X frame and then later create a TTY frame.
527 (remove-specifier-specs-matching-tag-set-cdrs (face-foreground face)
530 (remove-specifier (face-foreground face) locale x-tag-set nil))
531 (set-face-foreground face fg locale 'x append))
534 (remove-specifier-specs-matching-tag-set-cdrs (face-background face)
537 (remove-specifier (face-background face) locale x-tag-set nil))
538 (set-face-background face bg locale 'x append))
541 (remove-specifier-specs-matching-tag-set-cdrs (face-background-pixmap
545 (remove-specifier (face-background-pixmap face) locale x-tag-set nil))
546 (set-face-background-pixmap face bgp locale nil append))
549 (remove-specifier-specs-matching-tag-set-cdrs (face-property
553 (remove-specifier (face-property face 'underline) locale
555 (set-face-underline-p face ulp locale nil append))
558 (remove-specifier-specs-matching-tag-set-cdrs (face-property
562 (remove-specifier (face-property face 'strikethru)
563 locale tty-tag-set nil))
564 (set-face-strikethru-p face stp locale nil append))
567 (remove-specifier-specs-matching-tag-set-cdrs (face-property
571 (remove-specifier (face-property face 'highlight)
572 locale tty-tag-set nil))
573 (set-face-highlight-p face hp locale nil append))
576 (remove-specifier-specs-matching-tag-set-cdrs (face-property
580 (remove-specifier (face-property face 'dim) locale tty-tag-set nil))
581 (set-face-dim-p face dp locale nil append))
584 (remove-specifier-specs-matching-tag-set-cdrs (face-property
588 (remove-specifier (face-property face 'blinking) locale
590 (set-face-blinking-p face bp locale nil append))
593 (remove-specifier-specs-matching-tag-set-cdrs (face-property
597 (remove-specifier (face-property face 'reverse) locale
599 (set-face-reverse-p face rp locale nil append))
602 ;; GNU Emacs compatibility. (move to obsolete.el?)
603 (defalias 'make-face-x-resource-internal 'x-init-face-from-resources)
605 (defun remove-specifier-specs-matching-tag-set-cdrs (specifier locale tag-set)
607 (remove-specifier specifier locale tag-set t)
608 (setq tag-set (cdr tag-set))))
610 ;;; x-init-global-faces is responsible for ensuring that the
611 ;;; default face has some reasonable fallbacks if nothing else is
614 (defun x-init-global-faces ()
615 (or (face-font 'default 'global)
616 (set-face-font 'default
617 "-*-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-*"
618 'global '(x default)))
619 (or (face-foreground 'default 'global)
620 (set-face-foreground 'default "black" 'global '(x default)))
621 (or (face-background 'default 'global)
622 (set-face-background 'default "gray80" 'global '(x default))))
624 ;;; x-init-device-faces is responsible for initializing default
625 ;;; values for faces on a newly created device.
627 (defun x-init-device-faces (device)
629 ;; If the "default" face didn't have a font specified, try to pick one.
632 (face-font-instance 'default device)
634 ;; No font specified in the resource database; try to cope.
636 ;; At first I wanted to do this by just putting a font-spec in the
637 ;; fallback resources passed to XtAppInitialize(), but that fails
638 ;; if there is an Emacs app-defaults file which doesn't specify a
639 ;; font: apparently the fallback resources are not consulted when
640 ;; there is an app-defaults file, which seems pretty bogus to me.
642 ;; We should also probably try "*xtDefaultFont", but I think that it
643 ;; might be legal to specify that as "xtDefaultFont:", that is, at
644 ;; top level, instead of "*xtDefaultFont:", that is, applicable to
645 ;; every application. `x-get-resource' can't handle that right now.
646 ;; Anyway, xtDefaultFont is probably variable-width.
648 ;; Some who have LucidaTypewriter think it's a better font than Courier,
649 ;; but it has the bug that there are no italic and bold italic versions.
650 ;; We could hair this code up to try and mix-and-match fonts to get a
651 ;; full complement, but really, why bother. It's just a default.
656 ;; We default to looking for iso8859 fonts. Using a wildcard for the
657 ;; encoding would be bad, because that can cause English speakers to get
658 ;; Kanji fonts by default. It is safe to assume that people using a
659 ;; language other than English have both set $LANG, and have specified
660 ;; their `font' and `fontList' resources. In any event, it's better to
661 ;; err on the side of the English speaker in this case because they are
662 ;; much less likely to have encountered this problem, and are thus less
663 ;; likely to know what to do about it.
665 ;; Try for Courier. Almost everyone has that. (Does anyone not?)
667 "-*-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-*" device t)
669 "-*-courier-*-r-*-*-*-120-*-*-*-*-iso8859-*" device t)
670 ;; Next try for any "medium" charcell or monospaced iso8859 font.
671 (make-font-instance "-*-*-medium-r-*-*-*-120-*-*-m-*-iso8859-*" device t)
672 (make-font-instance "-*-*-medium-r-*-*-*-120-*-*-c-*-iso8859-*" device t)
673 ;; Next try for any charcell or monospaced iso8859 font.
674 (make-font-instance "-*-*-*-r-*-*-*-120-*-*-m-*-iso8859-*" device t)
675 (make-font-instance "-*-*-*-r-*-*-*-120-*-*-c-*-iso8859-*" device t)
676 ;; Ok, let's at least try to stay in 8859...
677 (make-font-instance "-*-*-*-r-*-*-*-120-*-*-*-*-iso8859-*" device t)
678 ;; Boy, we sure are losing now. Try the above, but in any encoding.
679 (make-font-instance "-*-*-medium-r-*-*-*-120-*-*-m-*-*-*" device t)
680 (make-font-instance "-*-*-medium-r-*-*-*-120-*-*-c-*-*-*" device t)
681 (make-font-instance "-*-*-*-r-*-*-*-120-*-*-m-*-*-*" device t)
682 (make-font-instance "-*-*-*-r-*-*-*-120-*-*-c-*-*-*" device t)
683 (make-font-instance "-*-*-*-r-*-*-*-120-*-*-*-*-*-*" device t)
685 (make-font-instance "-*-*-*-*-*-*-*-120-*-*-*-*-*-*" device t)
686 (make-font-instance "*" device t)
687 ;; if we get to here we're screwed, and faces.c will fatal()...
689 (if (not (face-font 'default 'global))
690 (set-face-font 'default new-x-font)
691 (set-face-font 'default new-x-font device))))
693 ;; If the "default" face didn't have both colors specified, then pick
694 ;; some, taking into account whether one of the colors was specified.
696 (let ((fg (face-foreground-instance 'default device))
697 (bg (face-background-instance 'default device)))
698 (if (not (and fg bg))
699 (if (or (and fg (equal (downcase (color-instance-name fg)) "white"))
700 (and bg (equal (downcase (color-instance-name bg)) "black")))
702 (or fg (set-face-foreground 'default "white" device))
703 (or bg (set-face-background 'default "black" device)))
704 (or fg (set-face-foreground 'default "white" device))
705 (or bg (set-face-background 'default "black" device)))))
707 ;; Don't look at reverseVideo now or initialize the modeline. This
708 ;; is done on a per-frame basis at the appropriate time.
711 ;; Now let's try to pick some reasonable defaults for a few other faces.
712 ;; This kind of stuff should normally go on the create-frame-hook, but
713 ;; this way we won't be in danger of the user screwing things up by not
714 ;; adding hooks in a safe way.
716 (x-init-pointer-shape device) ; from x-mouse.el
719 ;;; This is called from `init-frame-faces', which is called from
720 ;;; init_frame_faces() which is called from Fmake_frame(), to perform
721 ;;; any device-specific initialization.
723 (defun x-init-frame-faces (frame)
725 ;; The faces already got initialized (by init-frame-faces) from
726 ;; the resource database or global, non-frame faces. The default,
727 ;; bold, bold-italic, and italic faces (plus various other random faces)
728 ;; got set up then. But modeline didn't so that reverseVideo can be
733 ;; If reverseVideo was specified, swap the foreground and background
734 ;; of the default and modeline faces.
736 (cond ((car (x-get-resource "reverseVideo" "ReverseVideo" 'boolean frame
738 ;; First make sure the modeline has fg and bg, inherited from the
739 ;; current default face - for the case where only one is specified,
740 ;; so that invert-face doesn't do something weird.
741 (or (face-foreground 'modeline frame)
742 (set-face-foreground 'modeline
743 (face-foreground-instance 'default frame)
745 (or (face-background 'modeline frame)
746 (set-face-background 'modeline
747 (face-background-instance 'default frame)
749 ;; Now invert both of them. If they end up looking the same,
750 ;; make-frame-initial-faces will invert the modeline again later.
751 (invert-face 'default frame)
752 (invert-face 'modeline frame)
755 ;;; x-faces.el ends here