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637fa988 JD |
1 | /* Functions for handle font changes dynamically. |
2 | Copyright (C) 2009 | |
3 | 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 3 of the License, or | |
10 | (at your option) 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. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "config.h" | |
21 | #include <setjmp.h> | |
22 | #include <fcntl.h> | |
23 | #include "lisp.h" | |
24 | #include "xterm.h" | |
25 | #include "xsettings.h" | |
26 | #include "frame.h" | |
b87dd913 | 27 | #include "keyboard.h" |
637fa988 JD |
28 | #include "blockinput.h" |
29 | #include "termhooks.h" | |
30 | #include "termopts.h" | |
31 | ||
32 | #include <X11/Xproto.h> | |
33 | ||
34 | #ifdef HAVE_GCONF | |
35 | #include <gconf/gconf-client.h> | |
36 | #endif | |
37 | #ifdef HAVE_XFT | |
38 | #include <X11/Xft/Xft.h> | |
39 | #endif | |
40 | ||
41 | static char *current_mono_font; | |
42 | static struct x_display_info *first_dpyinfo; | |
43 | static Lisp_Object Qfont_name, Qfont_render; | |
dfb3c4c6 | 44 | static int use_system_font; |
637fa988 JD |
45 | |
46 | #ifdef HAVE_GCONF | |
47 | static GConfClient *gconf_client; | |
48 | #endif | |
49 | ||
50 | ||
51 | static void | |
52 | store_font_changed_event (arg, display_name) | |
53 | Lisp_Object arg; | |
54 | Lisp_Object display_name; | |
55 | { | |
56 | struct input_event event; | |
57 | EVENT_INIT (event); | |
58 | event.kind = CONFIG_CHANGED_EVENT; | |
59 | event.frame_or_window = display_name; | |
60 | event.arg = arg; | |
61 | kbd_buffer_store_event (&event); | |
62 | } | |
63 | ||
64 | #ifdef HAVE_GCONF | |
65 | ||
66 | #define SYSTEM_MONO_FONT "/desktop/gnome/interface/monospace_font_name" | |
67 | ||
68 | /* Callback called when something changed in GConf that we care about, | |
69 | that is SYSTEM_MONO_FONT. */ | |
70 | ||
71 | static void | |
72 | something_changedCB (client, cnxn_id, entry, user_data) | |
73 | GConfClient *client; | |
74 | guint cnxn_id; | |
75 | GConfEntry *entry; | |
76 | gpointer user_data; | |
77 | { | |
78 | GConfValue *v = gconf_entry_get_value (entry); | |
79 | ||
80 | if (!v) return; | |
81 | if (v->type == GCONF_VALUE_STRING) | |
82 | { | |
83 | const char *value = gconf_value_get_string (v); | |
84 | int i; | |
85 | if (current_mono_font != NULL && strcmp (value, current_mono_font) == 0) | |
872870b2 | 86 | return; /* No change. */ |
637fa988 JD |
87 | |
88 | xfree (current_mono_font); | |
89 | current_mono_font = xstrdup (value); | |
90 | } | |
91 | ||
92 | ||
93 | if (first_dpyinfo != NULL) | |
94 | { | |
95 | /* Check if display still open */ | |
96 | struct x_display_info *dpyinfo; | |
97 | int found = 0; | |
98 | for (dpyinfo = x_display_list; !found && dpyinfo; dpyinfo = dpyinfo->next) | |
99 | found = dpyinfo == first_dpyinfo; | |
100 | ||
dfb3c4c6 | 101 | if (found && use_system_font) |
637fa988 JD |
102 | store_font_changed_event (Qfont_name, |
103 | XCAR (first_dpyinfo->name_list_element)); | |
104 | } | |
105 | } | |
106 | #endif /* HAVE_GCONF */ | |
107 | ||
108 | #ifdef HAVE_XFT | |
109 | ||
21050de1 JD |
110 | /* Older fontconfig versions don't have FC_LCD_*. */ |
111 | #ifndef FC_LCD_NONE | |
112 | #define FC_LCD_NONE 0 | |
113 | #endif | |
114 | #ifndef FC_LCD_DEFAULT | |
115 | #define FC_LCD_DEFAULT 1 | |
116 | #endif | |
117 | #ifndef FC_LCD_FILTER | |
118 | #define FC_LCD_FILTER "lcdfilter" | |
119 | #endif | |
120 | ||
637fa988 JD |
121 | /* Find the window that contains the XSETTINGS property values. */ |
122 | ||
123 | static void | |
124 | get_prop_window (dpyinfo) | |
125 | struct x_display_info *dpyinfo; | |
126 | { | |
127 | Display *dpy = dpyinfo->display; | |
128 | ||
129 | XGrabServer (dpy); | |
130 | dpyinfo->xsettings_window = XGetSelectionOwner (dpy, | |
131 | dpyinfo->Xatom_xsettings_sel); | |
132 | if (dpyinfo->xsettings_window != None) | |
133 | /* Select events so we can detect if window is deleted or if settings | |
134 | are changed. */ | |
135 | XSelectInput (dpy, dpyinfo->xsettings_window, | |
136 | PropertyChangeMask|StructureNotifyMask); | |
137 | ||
138 | XUngrabServer (dpy); | |
139 | } | |
140 | ||
141 | struct xsettings | |
142 | { | |
143 | FcBool aa, hinting; | |
144 | int rgba, lcdfilter, hintstyle; | |
145 | double dpi; | |
146 | }; | |
147 | ||
148 | #define SWAP32(nr) (((nr) << 24) | (((nr) << 8) & 0xff0000) \ | |
149 | | (((nr) >> 8) & 0xff00) | ((nr) >> 24)) | |
150 | #define SWAP16(nr) (((nr) << 8) | ((nr) >> 8)) | |
151 | #define PAD(nr) (((nr) + 3) & ~3) | |
152 | ||
153 | /* Parse xsettings and extract those that deal with Xft. | |
154 | See http://freedesktop.org/wiki/Specifications/XSettingsRegistry | |
155 | and http://standards.freedesktop.org/xsettings-spec/xsettings-spec-0.5.html. | |
156 | ||
157 | Layout of prop. First is a header: | |
158 | ||
159 | bytes type what | |
160 | ------------------------------------ | |
161 | 1 CARD8 byte-order | |
162 | 3 unused | |
163 | 4 CARD32 SERIAL | |
164 | 4 CARD32 N_SETTINGS | |
165 | ||
166 | Then N_SETTINGS records, with header: | |
167 | ||
168 | bytes type what | |
169 | ------------------------------------ | |
170 | 1 SETTING_TYPE type (0 = integer, 1 = string, 2 RGB color). | |
171 | 1 unused | |
172 | 2 CARD16 n == name-length | |
173 | n STRING8 name | |
174 | p unused, p=pad_to_even_4(n) | |
175 | 4 CARD32 last-change-serial | |
176 | ||
177 | and then the value, For string: | |
178 | ||
179 | bytes type what | |
180 | ------------------------------------ | |
181 | 4 CARD32 n = value-length | |
182 | n STRING8 value | |
183 | p unused, p=pad_to_even_4(n) | |
184 | ||
185 | For integer: | |
186 | ||
187 | bytes type what | |
188 | ------------------------------------ | |
189 | 4 INT32 value | |
190 | ||
191 | For RGB color: | |
192 | ||
193 | bytes type what | |
194 | ------------------------------------ | |
195 | 2 CARD16 red | |
196 | 2 CARD16 blue | |
197 | 2 CARD16 green | |
198 | 2 CARD16 alpha | |
199 | ||
200 | */ | |
201 | ||
202 | static int | |
203 | parse_xft_settings (prop, bytes, settings) | |
204 | unsigned char *prop; | |
205 | unsigned long bytes; | |
206 | struct xsettings *settings; | |
207 | { | |
208 | Lisp_Object byteorder = Fbyteorder (); | |
209 | int my_bo = XFASTINT (byteorder) == 'B' ? MSBFirst : LSBFirst; | |
210 | int that_bo = prop[0]; | |
211 | CARD32 n_settings; | |
212 | int bytes_parsed = 0; | |
213 | int settings_seen = 0; | |
214 | int i = 0; | |
215 | ||
216 | /* First 4 bytes is a serial number, skip that. */ | |
217 | ||
218 | if (bytes < 12) return BadLength; | |
219 | memcpy (&n_settings, prop+8, 4); | |
220 | if (my_bo != that_bo) n_settings = SWAP32 (n_settings); | |
221 | bytes_parsed = 12; | |
222 | ||
223 | memset (settings, 0, sizeof (*settings)); | |
224 | ||
225 | while (bytes_parsed+4 < bytes && settings_seen < 6 | |
226 | && i < n_settings) | |
227 | { | |
228 | int type = prop[bytes_parsed++]; | |
229 | CARD16 nlen; | |
230 | CARD32 vlen, ival = 0; | |
231 | char name[128]; /* The names we are looking for are not this long. */ | |
232 | char sval[128]; /* The values we are looking for are not this long. */ | |
233 | int is_xft; | |
234 | int to_cpy; | |
235 | ||
236 | sval[0] = '\0'; | |
237 | ++i; | |
238 | ++bytes_parsed; /* Padding */ | |
239 | ||
240 | memcpy (&nlen, prop+bytes_parsed, 2); | |
241 | bytes_parsed += 2; | |
242 | if (my_bo != that_bo) nlen = SWAP16 (nlen); | |
243 | if (bytes_parsed+nlen > bytes) return BadLength; | |
244 | to_cpy = nlen > 127 ? 127 : nlen; | |
245 | memcpy (name, prop+bytes_parsed, to_cpy); | |
246 | name[to_cpy] = '\0'; | |
247 | ||
248 | bytes_parsed += nlen; | |
249 | bytes_parsed = PAD (bytes_parsed); | |
250 | ||
251 | bytes_parsed += 4; /* Skip serial for this value */ | |
252 | if (bytes_parsed > bytes) return BadLength; | |
253 | ||
254 | is_xft = nlen > 6 && strncmp (name, "Xft/", 4) == 0; | |
255 | ||
256 | switch (type) | |
257 | { | |
258 | case 0: /* Integer */ | |
259 | if (bytes_parsed+4 > bytes) return BadLength; | |
260 | if (is_xft) | |
261 | { | |
262 | memcpy (&ival, prop+bytes_parsed, 4); | |
263 | if (my_bo != that_bo) ival = SWAP32 (ival); | |
264 | } | |
265 | bytes_parsed += 4; | |
266 | break; | |
267 | ||
268 | case 1: /* String */ | |
269 | if (bytes_parsed+4 > bytes) return BadLength; | |
270 | memcpy (&vlen, prop+bytes_parsed, 4); | |
271 | bytes_parsed += 4; | |
272 | if (my_bo != that_bo) vlen = SWAP32 (vlen); | |
273 | if (is_xft) | |
274 | { | |
275 | to_cpy = vlen > 127 ? 127 : vlen; | |
276 | memcpy (sval, prop+bytes_parsed, to_cpy); | |
277 | sval[to_cpy] = '\0'; | |
278 | } | |
279 | bytes_parsed += vlen; | |
280 | bytes_parsed = PAD (bytes_parsed); | |
281 | break; | |
282 | ||
283 | case 2: /* RGB value */ | |
284 | /* No need to parse this */ | |
285 | if (bytes_parsed+8 > bytes) return BadLength; | |
286 | bytes_parsed += 8; /* 4 values (r, b, g, alpha), 2 bytes each. */ | |
287 | break; | |
288 | ||
289 | default: /* Parse Error */ | |
290 | return BadValue; | |
291 | } | |
292 | ||
293 | if (is_xft) | |
294 | { | |
295 | ++settings_seen; | |
296 | if (strcmp (name, "Xft/Antialias") == 0) | |
297 | settings->aa = ival != 0; | |
298 | else if (strcmp (name, "Xft/Hinting") == 0) | |
299 | settings->hinting = ival != 0; | |
300 | else if (strcmp (name, "Xft/HintStyle") == 0) | |
301 | { | |
302 | if (strcmp (sval, "hintnone") == 0) | |
303 | settings->hintstyle = FC_HINT_NONE; | |
304 | else if (strcmp (sval, "hintslight") == 0) | |
305 | settings->hintstyle = FC_HINT_SLIGHT; | |
306 | else if (strcmp (sval, "hintmedium") == 0) | |
307 | settings->hintstyle = FC_HINT_MEDIUM; | |
308 | else if (strcmp (sval, "hintfull") == 0) | |
309 | settings->hintstyle = FC_HINT_FULL; | |
310 | } | |
311 | else if (strcmp (name, "Xft/RGBA") == 0) | |
312 | { | |
313 | if (strcmp (sval, "none") == 0) | |
314 | settings->rgba = FC_RGBA_NONE; | |
315 | else if (strcmp (sval, "rgb") == 0) | |
316 | settings->rgba = FC_RGBA_RGB; | |
317 | else if (strcmp (sval, "bgr") == 0) | |
318 | settings->rgba = FC_RGBA_BGR; | |
319 | else if (strcmp (sval, "vrgb") == 0) | |
320 | settings->rgba = FC_RGBA_VRGB; | |
321 | else if (strcmp (sval, "vbgr") == 0) | |
322 | settings->rgba = FC_RGBA_VBGR; | |
323 | } | |
324 | else if (strcmp (name, "Xft/DPI") == 0) | |
325 | settings->dpi = (double)ival/1024.0; | |
326 | else if (strcmp (name, "Xft/lcdfilter") == 0) | |
327 | { | |
328 | if (strcmp (sval, "none") == 0) | |
329 | settings->lcdfilter = FC_LCD_NONE; | |
330 | else if (strcmp (sval, "lcddefault") == 0) | |
331 | settings->lcdfilter = FC_LCD_DEFAULT; | |
332 | } | |
333 | } | |
334 | } | |
335 | ||
336 | return Success; | |
337 | } | |
338 | ||
339 | static int | |
340 | read_xft_settings (dpyinfo, settings) | |
341 | struct x_display_info *dpyinfo; | |
342 | struct xsettings *settings; | |
343 | { | |
344 | long long_len; | |
345 | Atom act_type; | |
346 | int act_form; | |
347 | unsigned long nitems, bytes_after; | |
348 | unsigned char *prop = NULL; | |
349 | Display *dpy = dpyinfo->display; | |
350 | int rc; | |
351 | ||
352 | x_catch_errors (dpy); | |
353 | rc = XGetWindowProperty (dpy, | |
354 | dpyinfo->xsettings_window, | |
355 | dpyinfo->Xatom_xsettings_prop, | |
356 | 0, LONG_MAX, False, AnyPropertyType, | |
357 | &act_type, &act_form, &nitems, &bytes_after, | |
358 | &prop); | |
359 | ||
360 | if (rc == Success && prop != NULL && act_form == 8 && nitems > 0 | |
361 | && act_type == dpyinfo->Xatom_xsettings_prop) | |
362 | rc = parse_xft_settings (prop, nitems, settings); | |
363 | ||
364 | XFree (prop); | |
365 | ||
366 | x_uncatch_errors (); | |
367 | ||
368 | return rc == Success; | |
369 | } | |
370 | ||
581e51e8 | 371 | |
637fa988 JD |
372 | static void |
373 | apply_xft_settings (dpyinfo, send_event_p) | |
374 | struct x_display_info *dpyinfo; | |
375 | int send_event_p; | |
376 | { | |
377 | FcPattern *pat; | |
378 | struct xsettings settings, oldsettings; | |
379 | int changed = 0; | |
380 | ||
381 | if (!read_xft_settings (dpyinfo, &settings)) | |
382 | return; | |
383 | ||
384 | memset (&oldsettings, 0, sizeof (oldsettings)); | |
385 | ||
386 | pat = FcPatternCreate (); | |
387 | XftDefaultSubstitute (dpyinfo->display, | |
388 | XScreenNumberOfScreen (dpyinfo->screen), | |
389 | pat); | |
390 | FcPatternGetBool (pat, FC_ANTIALIAS, 0, &oldsettings.aa); | |
391 | FcPatternGetBool (pat, FC_HINTING, 0, &oldsettings.hinting); | |
392 | FcPatternGetInteger (pat, FC_HINT_STYLE, 0, &oldsettings.hintstyle); | |
393 | FcPatternGetInteger (pat, FC_LCD_FILTER, 0, &oldsettings.lcdfilter); | |
394 | FcPatternGetInteger (pat, FC_RGBA, 0, &oldsettings.rgba); | |
395 | FcPatternGetDouble (pat, FC_DPI, 0, &oldsettings.dpi); | |
396 | ||
397 | if (oldsettings.aa != settings.aa) | |
398 | { | |
399 | FcPatternDel (pat, FC_ANTIALIAS); | |
400 | FcPatternAddBool (pat, FC_ANTIALIAS, settings.aa); | |
401 | ++changed; | |
402 | } | |
403 | if (oldsettings.hinting != settings.hinting) | |
404 | { | |
405 | FcPatternDel (pat, FC_HINTING); | |
406 | FcPatternAddBool (pat, FC_HINTING, settings.hinting); | |
407 | ++changed; | |
408 | } | |
409 | if (oldsettings.rgba != settings.rgba) | |
410 | { | |
411 | FcPatternDel (pat, FC_RGBA); | |
412 | FcPatternAddInteger (pat, FC_RGBA, settings.rgba); | |
413 | ++changed; | |
414 | } | |
a6eb20d8 | 415 | /* Older fontconfig versions don't have FC_LCD_FILTER. */ |
637fa988 JD |
416 | if (oldsettings.lcdfilter != settings.lcdfilter) |
417 | { | |
418 | FcPatternDel (pat, FC_LCD_FILTER); | |
419 | FcPatternAddInteger (pat, FC_LCD_FILTER, settings.lcdfilter); | |
420 | ++changed; | |
421 | } | |
422 | if (oldsettings.hintstyle != settings.hintstyle) | |
423 | { | |
424 | FcPatternDel (pat, FC_HINT_STYLE); | |
425 | FcPatternAddInteger (pat, FC_HINT_STYLE, settings.hintstyle); | |
426 | ++changed; | |
427 | } | |
428 | if (oldsettings.dpi != settings.dpi) | |
429 | { | |
430 | Lisp_Object frame, tail; | |
431 | ||
432 | FcPatternDel (pat, FC_DPI); | |
433 | FcPatternAddDouble (pat, FC_DPI, settings.dpi); | |
434 | ++changed; | |
435 | ||
436 | /* Change the DPI on this display and all frames on the display. */ | |
437 | dpyinfo->resy = dpyinfo->resx = settings.dpi; | |
438 | FOR_EACH_FRAME (tail, frame) | |
439 | if (FRAME_X_P (XFRAME (frame)) | |
440 | && FRAME_X_DISPLAY_INFO (XFRAME (frame)) == dpyinfo) | |
441 | XFRAME (frame)->resy = XFRAME (frame)->resx = settings.dpi; | |
442 | } | |
443 | ||
444 | if (changed) | |
445 | { | |
446 | XftDefaultSet (dpyinfo->display, pat); | |
447 | if (send_event_p) | |
448 | store_font_changed_event (Qfont_render, | |
449 | XCAR (dpyinfo->name_list_element)); | |
450 | } | |
451 | else | |
452 | FcPatternDestroy (pat); | |
453 | } | |
454 | ||
455 | #endif /* HAVE_XFT */ | |
456 | ||
457 | void | |
458 | xft_settings_event (dpyinfo, event) | |
459 | struct x_display_info *dpyinfo; | |
460 | XEvent *event; | |
461 | { | |
462 | #ifdef HAVE_XFT | |
463 | int check_window_p = 0; | |
464 | ||
465 | switch (event->type) | |
466 | { | |
467 | case DestroyNotify: | |
468 | if (dpyinfo->xsettings_window == event->xany.window) | |
469 | check_window_p = 1; | |
470 | break; | |
471 | ||
472 | case ClientMessage: | |
473 | if (event->xclient.message_type == dpyinfo->Xatom_xsettings_mgr | |
474 | && event->xclient.data.l[1] == dpyinfo->Xatom_xsettings_sel | |
475 | && event->xclient.window == dpyinfo->root_window) | |
476 | check_window_p = 1; | |
477 | break; | |
478 | ||
479 | case PropertyNotify: | |
480 | if (event->xproperty.window == dpyinfo->xsettings_window | |
481 | && event->xproperty.state == PropertyNewValue | |
482 | && event->xproperty.atom == dpyinfo->Xatom_xsettings_prop) | |
483 | { | |
484 | apply_xft_settings (dpyinfo, True); | |
485 | } | |
486 | break; | |
487 | } | |
488 | ||
489 | if (check_window_p) | |
490 | { | |
491 | dpyinfo->xsettings_window = None; | |
492 | get_prop_window (dpyinfo); | |
493 | if (dpyinfo->xsettings_window != None) | |
494 | apply_xft_settings (dpyinfo, True); | |
495 | } | |
496 | #endif /* HAVE_XFT */ | |
497 | } | |
498 | ||
499 | ||
500 | static void | |
501 | init_gconf () | |
502 | { | |
0d1d0d26 | 503 | #if defined (HAVE_GCONF) && defined (HAVE_XFT) |
637fa988 JD |
504 | int i; |
505 | char *s; | |
637fa988 JD |
506 | |
507 | g_type_init (); | |
508 | gconf_client = gconf_client_get_default (); | |
509 | s = gconf_client_get_string (gconf_client, SYSTEM_MONO_FONT, NULL); | |
510 | if (s) | |
511 | { | |
512 | current_mono_font = xstrdup (s); | |
513 | g_free (s); | |
514 | } | |
515 | gconf_client_set_error_handling (gconf_client, GCONF_CLIENT_HANDLE_NONE); | |
516 | gconf_client_add_dir (gconf_client, | |
517 | SYSTEM_MONO_FONT, | |
518 | GCONF_CLIENT_PRELOAD_ONELEVEL, | |
519 | NULL); | |
520 | gconf_client_notify_add (gconf_client, | |
521 | SYSTEM_MONO_FONT, | |
522 | something_changedCB, | |
523 | NULL, NULL, NULL); | |
0d1d0d26 | 524 | #endif /* HAVE_GCONF && HAVE_XFT */ |
637fa988 JD |
525 | } |
526 | ||
527 | static void | |
528 | init_xfd_settings (dpyinfo) | |
529 | struct x_display_info *dpyinfo; | |
530 | { | |
531 | #ifdef HAVE_XFT | |
532 | char sel[64]; | |
533 | Display *dpy = dpyinfo->display; | |
534 | ||
535 | BLOCK_INPUT; | |
536 | ||
537 | sprintf (sel, "_XSETTINGS_S%d", XScreenNumberOfScreen (dpyinfo->screen)); | |
538 | dpyinfo->Xatom_xsettings_sel = XInternAtom (dpy, sel, False); | |
539 | dpyinfo->Xatom_xsettings_prop = XInternAtom (dpy, | |
540 | "_XSETTINGS_SETTINGS", | |
541 | False); | |
542 | dpyinfo->Xatom_xsettings_mgr = XInternAtom (dpy, "MANAGER", False); | |
543 | ||
544 | /* Select events so we can detect client messages sent when selection | |
545 | owner changes. */ | |
546 | XSelectInput (dpy, dpyinfo->root_window, StructureNotifyMask); | |
547 | ||
548 | get_prop_window (dpyinfo); | |
549 | if (dpyinfo->xsettings_window != None) | |
550 | apply_xft_settings (dpyinfo, False); | |
551 | ||
552 | UNBLOCK_INPUT; | |
553 | ||
554 | #else /* ! HAVE_XFT */ | |
555 | ||
556 | dpyinfo->Xatom_xsettings_sel = None; | |
557 | dpyinfo->Xatom_xsettings_prop = None; | |
558 | dpyinfo->Xatom_xsettings_mgr = None; | |
559 | dpyinfo->xsettings_window = None; | |
560 | ||
561 | #endif /* ! HAVE_XFT */ | |
562 | } | |
563 | ||
564 | void | |
565 | xsettings_initialize (dpyinfo) | |
566 | struct x_display_info *dpyinfo; | |
567 | { | |
568 | if (first_dpyinfo == NULL) first_dpyinfo = dpyinfo; | |
569 | init_gconf (); | |
570 | init_xfd_settings (dpyinfo); | |
571 | } | |
572 | ||
0d1d0d26 JD |
573 | const char * |
574 | xsettings_get_system_font () | |
575 | { | |
576 | return current_mono_font; | |
577 | } | |
637fa988 JD |
578 | |
579 | DEFUN ("font-get-system-font", Ffont_get_system_font, Sfont_get_system_font, | |
580 | 0, 0, 0, | |
581 | doc: /* Get the system default monospaced font. */) | |
582 | () | |
583 | { | |
dfb3c4c6 | 584 | return current_mono_font && use_system_font |
637fa988 JD |
585 | ? make_string (current_mono_font, strlen (current_mono_font)) |
586 | : Qnil; | |
587 | } | |
588 | ||
589 | void | |
590 | syms_of_xsettings () | |
591 | { | |
592 | current_mono_font = NULL; | |
593 | first_dpyinfo = NULL; | |
594 | #ifdef HAVE_GCONF | |
595 | gconf_client = NULL; | |
596 | #endif | |
597 | ||
598 | Qfont_name = intern_c_string ("font-name"); | |
599 | staticpro (&Qfont_name); | |
600 | Qfont_render = intern_c_string ("font-render"); | |
601 | staticpro (&Qfont_render); | |
602 | defsubr (&Sfont_get_system_font); | |
603 | ||
dfb3c4c6 JD |
604 | DEFVAR_BOOL ("font-use-system-font", &use_system_font, |
605 | doc: /* *Non-nil means to use the system defined font. */); | |
606 | use_system_font = 0; | |
607 | ||
0d1d0d26 JD |
608 | #ifdef HAVE_XFT |
609 | Fprovide (intern_c_string ("font-render-setting"), Qnil); | |
637fa988 JD |
610 | #ifdef HAVE_GCONF |
611 | Fprovide (intern_c_string ("system-font-setting"), Qnil); | |
612 | #endif | |
637fa988 JD |
613 | #endif |
614 | } | |
964f5b2b MB |
615 | |
616 | /* arch-tag: 541716ed-2e6b-42e1-8212-3197e01ea61d | |
617 | (do not change this comment) */ |