comparison lisp/x-faces.el @ 209:41ff10fd062f r20-4b3

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1 ;;; x-faces.el --- X-specific face frobnication, aka black magic.
2
3 ;; Copyright (C) 1992-4, 1997 Free Software Foundation, Inc.
4 ;; Copyright (C) 1995, 1996 Ben Wing.
5
6 ;; Author: Jamie Zawinski <jwz@netscape.com>
7 ;; Maintainer: XEmacs Development Team
8 ;; Keywords: extensions, internal, dumped
9
10 ;; This file is part of XEmacs.
11
12 ;; XEmacs is free software; you can redistribute it and/or modify it
13 ;; under the terms of the GNU General Public License as published by
14 ;; the Free Software Foundation; either version 2, or (at your option)
15 ;; any later version.
16
17 ;; XEmacs is distributed in the hope that it will be useful, but
18 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 ;; General Public License for more details.
21
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with XEmacs; see the file COPYING. If not, write to the
24 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
25 ;; Boston, MA 02111-1307, USA.
26
27 ;;; Synched up with: Not synched.
28
29 ;;; Commentary:
30
31 ;; This file is dumped with XEmacs (when X support is compiled in).
32
33 ;; Modified by: Chuck Thompson
34 ;; Modified by: Ben Wing
35 ;; Modified by: Martin Buchholz
36
37 ;; This file does the magic to parse X font names, and make sure that the
38 ;; default and modeline attributes of new frames are specified enough.
39
40 ;; The resource-manager syntax for faces is
41
42 ;; Emacs.bold.attributeFont: font-name
43 ;; Emacs.bold.attributeForeground: fg
44 ;; Emacs.bold.attributeBackground: bg
45 ;; Emacs.bold.attributeBackgroundPixmap: file
46 ;; Emacs.bold.attributeUnderline: true/false
47 ;; Emacs.bold.attributeStrikethru: true/false
48
49 ;; You can specify the properties of a face on a per-frame basis. For
50 ;; example, to have the "isearch" face use a red foreground on frames
51 ;; named "emacs" (the default) but use a blue foreground on frames that
52 ;; you create named "debugger", you could do
53
54 ;; Emacs*emacs.isearch.attributeForeground: red
55 ;; Emacs*debugger.isearch.attributeForeground: blue
56
57 ;; Generally things that make faces won't set any of the face attributes if
58 ;; you have already given them values via the resource database. You can
59 ;; also change this stuff from your .emacs file, by using the functions
60 ;; set-face-foreground, set-face-font, etc. See the code in this file, and
61 ;; in faces.el.
62
63 ;;; Code:
64
65 (defconst x-font-regexp nil)
66 (defconst x-font-regexp-head nil)
67 (defconst x-font-regexp-head-2 nil)
68 (defconst x-font-regexp-weight nil)
69 (defconst x-font-regexp-slant nil)
70 (defconst x-font-regexp-pixel nil)
71 (defconst x-font-regexp-point nil)
72 (defconst x-font-regexp-foundry-and-family nil)
73 (defconst x-font-regexp-registry-and-encoding nil)
74 (defconst x-font-regexp-spacing nil)
75
76 ;;; Regexps matching font names in "Host Portable Character Representation."
77 ;;;
78 (let ((- "[-?]")
79 (foundry "[^-]*")
80 (family "[^-]*")
81 (weight "\\(bold\\|demibold\\|medium\\|black\\)") ; 1
82 ; (weight\? "\\(\\*\\|bold\\|demibold\\|medium\\|\\)") ; 1
83 (weight\? "\\([^-]*\\)") ; 1
84 (slant "\\([ior]\\)") ; 2
85 ; (slant\? "\\([ior?*]?\\)") ; 2
86 (slant\? "\\([^-]?\\)") ; 2
87 ; (swidth "\\(\\*\\|normal\\|semicondensed\\|\\)") ; 3
88 (swidth "\\([^-]*\\)") ; 3
89 ; (adstyle "\\(\\*\\|sans\\|\\)") ; 4
90 (adstyle "\\([^-]*\\)") ; 4
91 (pixelsize "\\(\\*\\|[0-9]+\\)") ; 5
92 (pointsize "\\(\\*\\|0\\|[0-9][0-9]+\\)") ; 6
93 ; (resx "\\(\\*\\|[0-9][0-9]+\\)") ; 7
94 ; (resy "\\(\\*\\|[0-9][0-9]+\\)") ; 8
95 (resx "\\([*0]\\|[0-9][0-9]+\\)") ; 7
96 (resy "\\([*0]\\|[0-9][0-9]+\\)") ; 8
97 (spacing "[cmp?*]")
98 (avgwidth "\\(\\*\\|[0-9]+\\)") ; 9
99 (registry "[^-]*") ; some fonts have omitted registries
100 ; (encoding ".+") ; note that encoding may contain "-"...
101 (encoding "[^-]+") ; false!
102 )
103 (setq x-font-regexp
104 (purecopy
105 (concat "\\`\\*?[-?*]"
106 foundry - family - weight\? - slant\? - swidth - adstyle -
107 pixelsize - pointsize - resx - resy - spacing - avgwidth -
108 registry - encoding "\\'"
109 )))
110 (setq x-font-regexp-head
111 (purecopy
112 (concat "\\`[-?*]" foundry - family - weight\? - slant\?
113 "\\([-*?]\\|\\'\\)")))
114 (setq x-font-regexp-head-2
115 (purecopy
116 (concat "\\`[-?*]" foundry - family - weight\? - slant\?
117 - swidth - adstyle - pixelsize - pointsize
118 "\\([-*?]\\|\\'\\)")))
119 (setq x-font-regexp-slant (purecopy (concat - slant -)))
120 (setq x-font-regexp-weight (purecopy (concat - weight -)))
121 ;; if we can't match any of the more specific regexps (unfortunate) then
122 ;; look for digits; assume 2+ digits is 10ths of points, and 1-2 digits
123 ;; is pixels. Bogus as hell.
124 (setq x-font-regexp-pixel (purecopy "[-?*]\\([0-9][0-9]?\\)[-?*]"))
125 (setq x-font-regexp-point (purecopy "[-?*]\\([0-9][0-9]+\\)[-?*]"))
126 ;; the following two are used by x-font-menu.el.
127 (setq x-font-regexp-foundry-and-family
128 (purecopy (concat "\\`[-?*]" foundry - "\\(" family "\\)" -)))
129 (setq x-font-regexp-registry-and-encoding
130 (purecopy (concat - "\\(" registry "\\)" - "\\(" encoding "\\)\\'")))
131 (setq x-font-regexp-spacing
132 (purecopy (concat - "\\(" spacing "\\)" - avgwidth
133 - registry - encoding "\\'")))
134 )
135
136 ;; A "loser font" is something like "8x13" -> "8x13bold".
137 ;; These are supported only through extreme generosity.
138 (defconst x-loser-font-regexp (purecopy "\\`[0-9]+x[0-9]+\\'"))
139
140 (defun x-frob-font-weight (font which)
141 (if (font-instance-p font) (setq font (font-instance-name font)))
142 (cond ((null font) nil)
143 ((or (string-match x-font-regexp font)
144 (string-match x-font-regexp-head font)
145 (string-match x-font-regexp-weight font))
146 (concat (substring font 0 (match-beginning 1)) which
147 (substring font (match-end 1))))
148 ((string-match x-loser-font-regexp font)
149 (concat font which))
150 (t nil)))
151
152 (defun x-frob-font-slant (font which)
153 (if (font-instance-p font) (setq font (font-instance-name font)))
154 (cond ((null font) nil)
155 ((or (string-match x-font-regexp font)
156 (string-match x-font-regexp-head font))
157 (concat (substring font 0 (match-beginning 2)) which
158 (substring font (match-end 2))))
159 ((string-match x-font-regexp-slant font)
160 (concat (substring font 0 (match-beginning 1)) which
161 (substring font (match-end 1))))
162 ((string-match x-loser-font-regexp font)
163 (concat font which))
164 (t nil)))
165
166 (defun try-font-name (name &optional device)
167 ;; yes, name really should be here twice.
168 (and name (make-font-instance name device t) name))
169
170 (defun x-make-font-bold (font &optional device)
171 "Given an X font specification, this attempts to make a `bold' font.
172 If it fails, it returns nil."
173 ;; Certain Type1 fonts know "bold" as "black"...
174 (or (try-font-name (x-frob-font-weight font "bold") device)
175 (try-font-name (x-frob-font-weight font "black") device)
176 (try-font-name (x-frob-font-weight font "demibold") device)))
177
178 (defun x-make-font-unbold (font &optional device)
179 "Given an X font specification, this attempts to make a non-bold font.
180 If it fails, it returns nil."
181 (try-font-name (x-frob-font-weight font "medium") device))
182
183 (defcustom *try-oblique-before-italic-fonts* nil
184 "*If nil, italic fonts are searched before oblique fonts.
185 If non-nil, oblique fonts are tried before italic fonts. This is mostly
186 applicable to adobe-courier fonts"
187 :type 'boolean
188 :tag "Try Oblique Before Italic Fonts"
189 :group 'x)
190
191 (defun x-make-font-italic (font &optional device)
192 "Given an X font specification, this attempts to make an `italic' font.
193 If it fails, it returns nil."
194 (if *try-oblique-before-italic-fonts*
195 (or (try-font-name (x-frob-font-slant font "o") device)
196 (try-font-name (x-frob-font-slant font "i") device))
197 (or (try-font-name (x-frob-font-slant font "i") device)
198 (try-font-name (x-frob-font-slant font "o") device))))
199
200 (defun x-make-font-unitalic (font &optional device)
201 "Given an X font specification, this attempts to make a non-italic font.
202 If it fails, it returns nil."
203 (try-font-name (x-frob-font-slant font "r") device))
204
205 (defun x-make-font-bold-italic (font &optional device)
206 "Given an X font specification, this attempts to make a `bold-italic' font.
207 If it fails, it returns nil."
208 ;; This is haired up to avoid loading the "intermediate" fonts.
209 (or (try-font-name
210 (x-frob-font-slant (x-frob-font-weight font "bold") "i") device)
211 (try-font-name
212 (x-frob-font-slant (x-frob-font-weight font "bold") "o") device)
213 (try-font-name
214 (x-frob-font-slant (x-frob-font-weight font "black") "i") device)
215 (try-font-name
216 (x-frob-font-slant (x-frob-font-weight font "black") "o") device)
217 (try-font-name
218 (x-frob-font-slant (x-frob-font-weight font "demibold") "i") device)
219 (try-font-name
220 (x-frob-font-slant (x-frob-font-weight font "demibold") "o") device)))
221
222 (defun x-font-size (font)
223 "Return the nominal size of the given font.
224 This is done by parsing its name, so it's likely to lose.
225 X fonts can be specified (by the user) in either pixels or 10ths of points,
226 and this returns the first one it finds, so you have to decide which units
227 the returned value is measured in yourself..."
228 (if (font-instance-p font) (setq font (font-instance-name font)))
229 (cond ((or (string-match x-font-regexp font)
230 (string-match x-font-regexp-head-2 font))
231 (string-to-int (substring font (match-beginning 6) (match-end 6))))
232 ((or (string-match x-font-regexp-pixel font)
233 (string-match x-font-regexp-point font))
234 (string-to-int (substring font (match-beginning 1) (match-end 1))))
235 (t nil)))
236
237 ;; Given a font name, this function returns a list describing all fonts
238 ;; of all sizes that otherwise match the given font spec. Each element
239 ;; in the list is a list of three items: the pixel size of the font,
240 ;; the point size (in 1/10ths of a point) of the font, and the fully-
241 ;; qualified font name. The first two values may be zero; this
242 ;; refers to a scalable font.
243
244 (defun x-available-font-sizes (font device)
245 (if (font-instance-p font) (setq font (font-instance-name font)))
246 (cond ((string-match x-font-regexp font)
247 ;; turn pixelsize, pointsize, and avgwidth into wildcards
248 (setq font
249 (concat (substring font 0 (match-beginning 5)) "*"
250 (substring font (match-end 5) (match-beginning 6)) "*"
251 (substring font (match-end 6) (match-beginning 9)) "*"
252 (substring font (match-end 9) (match-end 0)))))
253 ((string-match x-font-regexp-head-2 font)
254 ;; turn pixelsize and pointsize into wildcards
255 (setq font
256 (concat (substring font 0 (match-beginning 5)) "*"
257 (substring font (match-end 5) (match-beginning 6)) "*"
258 (substring font (match-end 6) (match-end 0)))))
259 ((string-match "[-?*]\\([0-9]+\\)[-?*]" font)
260 ;; Turn the first integer we match into a wildcard.
261 ;; This is pretty dubious...
262 (setq font
263 (concat (substring font 0 (match-beginning 1)) "*"
264 (substring font (match-end 1) (match-end 0))))))
265 (sort
266 (delq nil
267 (mapcar (function
268 (lambda (name)
269 (and (string-match x-font-regexp name)
270 (list
271 (string-to-int (substring name (match-beginning 5)
272 (match-end 5)))
273 (string-to-int (substring name (match-beginning 6)
274 (match-end 6)))
275 name))))
276 (list-fonts font device)))
277 (function (lambda (x y) (if (= (nth 1 x) (nth 1 y))
278 (< (nth 0 x) (nth 0 y))
279 (< (nth 1 x) (nth 1 y)))))))
280
281 ;; Given a font name, this attempts to construct a valid font name for
282 ;; DEVICE whose size is the next smaller (if UP-P is nil) or larger
283 ;; (if UP-P is t) size and whose other characteristics are the same
284 ;; as the given font.
285
286 (defun x-frob-font-size (font up-p device)
287 (if (stringp font) (setq font (make-font-instance font device)))
288 (if (font-instance-p font) (setq font (font-instance-truename font)))
289 (let ((available (and font
290 (x-available-font-sizes font device))))
291 (cond
292 ((null available) nil)
293 ((or (= 0 (nth 0 (car available)))
294 (= 0 (nth 1 (car available))))
295 ;; R5 scalable fonts: change size by 1 point.
296 ;; If they're scalable the first font will have pixel or point = 0.
297 ;; Sometimes one is 0 and the other isn't (if it's a bitmap font that
298 ;; can be scaled), sometimes both are (if it's a true outline font).
299 (let ((name (nth 2 (car available)))
300 old-size)
301 (or (string-match x-font-regexp font) (error "can't parse %S" font))
302 (setq old-size (string-to-int
303 (substring font (match-beginning 6) (match-end 6))))
304 (or (> old-size 0) (error "font truename has 0 pointsize?"))
305 (or (string-match x-font-regexp name) (error "can't parse %S" name))
306 ;; turn pixelsize into a wildcard, and make pointsize be +/- 10,
307 ;; which is +/- 1 point. All other fields stay the same as they
308 ;; were in the "template" font returned by x-available-font-sizes.
309 ;;
310 ;; #### But this might return the same font: for example, if the
311 ;; truename of "-*-courier-medium-r-normal--*-230-75-75-m-0-*"
312 ;; is "...-240-..." (instead of 230) then this loses, because
313 ;; the 230 that was passed in as an arg got turned into 240
314 ;; by the call to font-instance-truename; then we decrement that
315 ;; by 10 and return the result which is the same. I think the
316 ;; way to fix this is to make this be a loop that keeps trying
317 ;; progressively larger pointsize deltas until it finds one
318 ;; whose truename differs. Have to be careful to avoid infinite
319 ;; loops at the upper end...
320 ;;
321 (concat (substring name 0 (match-beginning 5)) "*"
322 (substring name (match-end 5) (match-beginning 6))
323 (int-to-string (+ old-size (if up-p 10 -10)))
324 (substring name (match-end 6) (match-end 0)))))
325 (t
326 ;; non-scalable fonts: take the next available size.
327 (let ((rest available)
328 (last nil)
329 result)
330 (setq font (downcase font))
331 (while rest
332 (cond ((and (not up-p) (equal font (downcase (nth 2 (car rest)))))
333 (setq result last
334 rest nil))
335 ((and up-p (equal font (and last (downcase (nth 2 last)))))
336 (setq result (car rest)
337 rest nil)))
338 (setq last (car rest))
339 (setq rest (cdr rest)))
340 (nth 2 result))))))
341
342 (defun x-find-smaller-font (font &optional device)
343 "Loads a new, slightly smaller version of the given font (or font name).
344 Returns the font if it succeeds, nil otherwise.
345 If scalable fonts are available, this returns a font which is 1 point smaller.
346 Otherwise, it returns the next smaller version of this font that is defined."
347 (x-frob-font-size font nil device))
348
349 (defun x-find-larger-font (font &optional device)
350 "Loads a new, slightly larger version of the given font (or font name).
351 Returns the font if it succeeds, nil otherwise.
352 If scalable fonts are available, this returns a font which is 1 point larger.
353 Otherwise, it returns the next larger version of this font that is defined."
354 (x-frob-font-size font t device))
355
356 (defalias 'x-make-face-bold 'make-face-bold)
357 (defalias 'x-make-face-italic 'make-face-italic)
358 (defalias 'x-make-face-bold-italic 'make-face-bold-italic)
359 (defalias 'x-make-face-unbold 'make-face-unbold)
360 (defalias 'x-make-face-unitalic 'make-face-unitalic)
361
362 (make-obsolete 'x-make-face-bold 'make-face-bold)
363 (make-obsolete 'x-make-face-italic 'make-face-italic)
364 (make-obsolete 'x-make-face-bold-italic 'make-face-bold-italic)
365 (make-obsolete 'x-make-face-unbold 'make-face-unbold)
366 (make-obsolete 'x-make-face-unitalic 'make-face-unitalic)
367
368
369 ;; Define some logical color names to be used when reading the pixmap files.
370 (if (featurep 'xpm)
371 (setq xpm-color-symbols
372 (list
373 (purecopy '("foreground" (face-foreground 'default)))
374 (purecopy '("background" (face-background 'default)))
375 (purecopy '("backgroundToolBarColor"
376 (x-get-resource "backgroundToolBarColor"
377 "BackgroundToolBarColor" 'string)))
378 )))
379
380 ;;; internal routines
381
382 ;;; x-init-face-from-resources is responsible for initializing a
383 ;;; newly-created face from the resource database.
384 ;;;
385 ;;; When a new frame is created, it is called from `x-init-frame-faces'
386 ;;; called from `init-frame-faces' called from init_frame_faces()
387 ;;; from Fmake_frame(). In this case it is called once for each existing
388 ;;; face, with the newly-created frame as the argument. It then initializes
389 ;;; the newly-created faces on that frame.
390 ;;;
391 ;;; It's also called from `init-device-faces' and
392 ;;; `init-global-faces'.
393 ;;;
394 ;;; This had better not signal an error. The frame is in an intermediate
395 ;;; state where signalling an error or entering the debugger would likely
396 ;;; result in a crash.
397
398 (defun x-init-face-from-resources (face &optional locale set-anyway)
399
400 ;;
401 ;; These are things like "attributeForeground" instead of simply
402 ;; "foreground" because people tend to do things like "*foreground",
403 ;; which would cause all faces to be fully qualified, making faces
404 ;; inherit attributes in a non-useful way. So we've made them slightly
405 ;; less obvious to specify in order to make them work correctly in
406 ;; more random environments.
407 ;;
408 ;; I think these should be called "face.faceForeground" instead of
409 ;; "face.attributeForeground", but they're the way they are for
410 ;; hysterical reasons. (jwz)
411
412 (let* ((append (if set-anyway nil 'append))
413 (face-sym (face-name face))
414 (name (symbol-name face-sym))
415 (fn (x-get-resource-and-maybe-bogosity-check
416 (concat name ".attributeFont")
417 "Face.AttributeFont"
418 'string locale))
419 (fg (x-get-resource-and-maybe-bogosity-check
420 (concat name ".attributeForeground")
421 "Face.AttributeForeground"
422 'string locale))
423 (bg (x-get-resource-and-maybe-bogosity-check
424 (concat name ".attributeBackground")
425 "Face.AttributeBackground"
426 'string locale))
427 (bgp (x-get-resource-and-maybe-bogosity-check
428 (concat name ".attributeBackgroundPixmap")
429 "Face.AttributeBackgroundPixmap"
430 'string locale))
431 (ulp (x-get-resource-and-maybe-bogosity-check
432 (concat name ".attributeUnderline")
433 "Face.AttributeUnderline"
434 'boolean locale))
435 (stp (x-get-resource-and-maybe-bogosity-check
436 (concat name ".attributeStrikethru")
437 "Face.AttributeStrikethru"
438 'boolean locale))
439 ;; we still resource for these TTY-only resources so that
440 ;; you can specify resources for TTY frames/devices. This is
441 ;; useful when you start up your XEmacs on an X display and later
442 ;; open some TTY frames.
443 (hp (x-get-resource-and-maybe-bogosity-check
444 (concat name ".attributeHighlight")
445 "Face.AttributeHighlight"
446 'boolean locale))
447 (dp (x-get-resource-and-maybe-bogosity-check
448 (concat name ".attributeDim")
449 "Face.AttributeDim"
450 'boolean locale))
451 (bp (x-get-resource-and-maybe-bogosity-check
452 (concat name ".attributeBlinking")
453 "Face.AttributeBlinking"
454 'boolean locale))
455 (rp (x-get-resource-and-maybe-bogosity-check
456 (concat name ".attributeReverse")
457 "Face.AttributeReverse"
458 'boolean locale))
459 )
460
461 ;;
462 ;; If this is the default face, then any unspecified properties should
463 ;; be defaulted from the global properties. Can't do this for
464 ;; frames or devices because then, common resource specs like
465 ;; "*Foreground: black" will have unwanted effects.
466 ;;
467 (if (and (eq (face-name face) 'default)
468 (or (null locale) (eq locale 'global)))
469 (progn
470 (or fn (setq fn (x-get-resource
471 "font" "Font" 'string locale)))
472 (or fg (setq fg (x-get-resource
473 "foreground" "Foreground" 'string locale)))
474 (or bg (setq bg (x-get-resource
475 "background" "Background" 'string locale)))))
476 ;;
477 ;; "*cursorColor: foo" is equivalent to setting the background of the
478 ;; text-cursor face.
479 ;;
480 (if (and (eq (face-name face) 'text-cursor)
481 (or (null locale) (eq locale 'global)))
482 (setq bg (or (x-get-resource
483 "cursorColor" "CursorColor" 'string locale) bg)))
484 ;; #### should issue warnings? I think this should be
485 ;; done when the instancing actually happens, but I'm not
486 ;; sure how it should actually be dealt with.
487 (if fn
488 (set-face-font face fn locale nil append))
489 ;; Kludge-o-rooni. Set the foreground and background resources for
490 ;; X devices only -- otherwise things tend to get all messed up
491 ;; if you start up an X frame and then later create a TTY frame.
492 (if fg
493 (set-face-foreground face fg locale 'x append))
494 (if bg
495 (set-face-background face bg locale 'x append))
496 (if bgp
497 (set-face-background-pixmap face bgp locale nil append))
498 (if ulp
499 (set-face-underline-p face ulp locale nil append))
500 (if stp
501 (set-face-strikethru-p face stp locale nil append))
502 (if hp
503 (set-face-highlight-p face hp locale nil append))
504 (if dp
505 (set-face-dim-p face dp locale nil append))
506 (if bp
507 (set-face-blinking-p face bp locale nil append))
508 (if rp
509 (set-face-reverse-p face rp locale nil append))
510 ))
511
512 ;; GNU Emacs compatibility. (move to obsolete.el?)
513 (defalias 'make-face-x-resource-internal 'x-init-face-from-resources)
514
515 ;;; x-init-global-faces is responsible for ensuring that the
516 ;;; default face has some reasonable fallbacks if nothing else is
517 ;;; specified.
518 ;;;
519 (defun x-init-global-faces ()
520 (or (face-font 'default 'global)
521 (set-face-font 'default
522 "-*-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-*")
523 'global)
524 (or (face-foreground 'default 'global)
525 (set-face-foreground 'default "black" 'global 'x))
526 (or (face-background 'default 'global)
527 (set-face-background 'default "gray80" 'global 'x)))
528
529 ;;; x-init-device-faces is responsible for initializing default
530 ;;; values for faces on a newly created device.
531 ;;;
532 (defun x-init-device-faces (device)
533 ;;
534 ;; If the "default" face didn't have a font specified, try to pick one.
535 ;;
536 (or
537 (face-font-instance 'default device)
538 ;;
539 ;; No font specified in the resource database; try to cope.
540 ;;
541 ;; At first I wanted to do this by just putting a font-spec in the
542 ;; fallback resources passed to XtAppInitialize(), but that fails
543 ;; if there is an Emacs app-defaults file which doesn't specify a
544 ;; font: apparently the fallback resources are not consulted when
545 ;; there is an app-defaults file, which seems pretty bogus to me.
546 ;;
547 ;; We should also probably try "*xtDefaultFont", but I think that it
548 ;; might be legal to specify that as "xtDefaultFont:", that is, at
549 ;; top level, instead of "*xtDefaultFont:", that is, applicable to
550 ;; every application. `x-get-resource' can't handle that right now.
551 ;; Anyway, xtDefaultFont is probably variable-width.
552 ;;
553 ;; Some who have LucidaTypewriter think it's a better font than Courier,
554 ;; but it has the bug that there are no italic and bold italic versions.
555 ;; We could hair this code up to try and mix-and-match fonts to get a
556 ;; full complement, but really, why bother. It's just a default.
557 ;;
558 (let (new-x-font)
559 (setq new-x-font (or
560 ;;
561 ;; We default to looking for iso8859 fonts. Using a wildcard for the
562 ;; encoding would be bad, because that can cause English speakers to get
563 ;; Kanji fonts by default. It is safe to assume that people using a
564 ;; language other than English have both set $LANG, and have specified
565 ;; their `font' and `fontList' resources. In any event, it's better to
566 ;; err on the side of the English speaker in this case because they are
567 ;; much less likely to have encountered this problem, and are thus less
568 ;; likely to know what to do about it.
569
570 ;; Try for Courier. Almost everyone has that. (Does anyone not?)
571 (make-font-instance
572 "-*-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-*" device t)
573 (make-font-instance
574 "-*-courier-*-r-*-*-*-120-*-*-*-*-iso8859-*" device t)
575 ;; Next try for any "medium" charcell or monospaced iso8859 font.
576 (make-font-instance "-*-*-medium-r-*-*-*-120-*-*-m-*-iso8859-*" device t)
577 (make-font-instance "-*-*-medium-r-*-*-*-120-*-*-c-*-iso8859-*" device t)
578 ;; Next try for any charcell or monospaced iso8859 font.
579 (make-font-instance "-*-*-*-r-*-*-*-120-*-*-m-*-iso8859-*" device t)
580 (make-font-instance "-*-*-*-r-*-*-*-120-*-*-c-*-iso8859-*" device t)
581 ;; Ok, let's at least try to stay in 8859...
582 (make-font-instance "-*-*-*-r-*-*-*-120-*-*-*-*-iso8859-*" device t)
583 ;; Boy, we sure are losing now. Try the above, but in any encoding.
584 (make-font-instance "-*-*-medium-r-*-*-*-120-*-*-m-*-*-*" device t)
585 (make-font-instance "-*-*-medium-r-*-*-*-120-*-*-c-*-*-*" device t)
586 (make-font-instance "-*-*-*-r-*-*-*-120-*-*-m-*-*-*" device t)
587 (make-font-instance "-*-*-*-r-*-*-*-120-*-*-c-*-*-*" device t)
588 (make-font-instance "-*-*-*-r-*-*-*-120-*-*-*-*-*-*" device t)
589 ;; Hello? Please?
590 (make-font-instance "-*-*-*-*-*-*-*-120-*-*-*-*-*-*" device t)
591 (make-font-instance "*" device t)
592 ;; if we get to here we're screwed, and faces.c will fatal()...
593 ))
594 (if (not (face-font 'default 'global))
595 (set-face-font 'default new-x-font)
596 (set-face-font 'default new-x-font device))))
597 ;;
598 ;; If the "default" face didn't have both colors specified, then pick
599 ;; some, taking into account whether one of the colors was specified.
600 ;;
601 (let ((fg (face-foreground-instance 'default device))
602 (bg (face-background-instance 'default device)))
603 (if (not (and fg bg))
604 (if (or (and fg (equal (downcase (color-instance-name fg)) "white"))
605 (and bg (equal (downcase (color-instance-name bg)) "black")))
606 (progn
607 (or fg (set-face-foreground 'default "white" device))
608 (or bg (set-face-background 'default "black" device)))
609 (or fg (set-face-foreground 'default "white" device))
610 (or bg (set-face-background 'default "black" device)))))
611
612 ;; Don't look at reverseVideo now or initialize the modeline. This
613 ;; is done on a per-frame basis at the appropriate time.
614
615 ;;
616 ;; Now let's try to pick some reasonable defaults for a few other faces.
617 ;; This kind of stuff should normally go on the create-frame-hook, but
618 ;; this way we won't be in danger of the user screwing things up by not
619 ;; adding hooks in a safe way.
620 ;;
621 (x-init-pointer-shape device) ; from x-mouse.el
622 )
623
624 ;;; This is called from `init-frame-faces', which is called from
625 ;;; init_frame_faces() which is called from Fmake_frame(), to perform
626 ;;; any device-specific initialization.
627 ;;;
628 (defun x-init-frame-faces (frame)
629 ;;
630 ;; The faces already got initialized (by init-frame-faces) from
631 ;; the resource database or global, non-frame faces. The default,
632 ;; bold, bold-italic, and italic faces (plus various other random faces)
633 ;; got set up then. But modeline didn't so that reverseVideo can be
634 ;; frame-specific.
635 ;;
636
637 ;;
638 ;; If reverseVideo was specified, swap the foreground and background
639 ;; of the default and modeline faces.
640 ;;
641 (cond ((car (x-get-resource "reverseVideo" "ReverseVideo" 'boolean frame))
642 ;; First make sure the modeline has fg and bg, inherited from the
643 ;; current default face - for the case where only one is specified,
644 ;; so that invert-face doesn't do something weird.
645 (or (face-foreground 'modeline frame)
646 (set-face-foreground 'modeline
647 (face-foreground-instance 'default frame)
648 frame))
649 (or (face-background 'modeline frame)
650 (set-face-background 'modeline
651 (face-background-instance 'default frame)
652 frame))
653 ;; Now invert both of them. If they end up looking the same,
654 ;; make-frame-initial-faces will invert the modeline again later.
655 (invert-face 'default frame)
656 (invert-face 'modeline frame)
657 )))
658
659 ;;; x-faces.el ends here