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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" | |
27 | #include "blockinput.h" | |
28 | #include "termhooks.h" | |
29 | #include "termopts.h" | |
30 | ||
31 | #include <X11/Xproto.h> | |
32 | ||
33 | #ifdef HAVE_GCONF | |
34 | #include <gconf/gconf-client.h> | |
35 | #endif | |
36 | #ifdef HAVE_XFT | |
37 | #include <X11/Xft/Xft.h> | |
38 | #endif | |
39 | ||
40 | static char *current_mono_font; | |
41 | static struct x_display_info *first_dpyinfo; | |
42 | static Lisp_Object Qfont_name, Qfont_render; | |
43 | ||
44 | #ifdef HAVE_GCONF | |
45 | static GConfClient *gconf_client; | |
46 | #endif | |
47 | ||
48 | ||
49 | static void | |
50 | store_font_changed_event (arg, display_name) | |
51 | Lisp_Object arg; | |
52 | Lisp_Object display_name; | |
53 | { | |
54 | struct input_event event; | |
55 | EVENT_INIT (event); | |
56 | event.kind = CONFIG_CHANGED_EVENT; | |
57 | event.frame_or_window = display_name; | |
58 | event.arg = arg; | |
59 | kbd_buffer_store_event (&event); | |
60 | } | |
61 | ||
62 | #ifdef HAVE_GCONF | |
63 | ||
64 | #define SYSTEM_MONO_FONT "/desktop/gnome/interface/monospace_font_name" | |
65 | ||
66 | /* Callback called when something changed in GConf that we care about, | |
67 | that is SYSTEM_MONO_FONT. */ | |
68 | ||
69 | static void | |
70 | something_changedCB (client, cnxn_id, entry, user_data) | |
71 | GConfClient *client; | |
72 | guint cnxn_id; | |
73 | GConfEntry *entry; | |
74 | gpointer user_data; | |
75 | { | |
76 | GConfValue *v = gconf_entry_get_value (entry); | |
77 | ||
78 | if (!v) return; | |
79 | if (v->type == GCONF_VALUE_STRING) | |
80 | { | |
81 | const char *value = gconf_value_get_string (v); | |
82 | int i; | |
83 | if (current_mono_font != NULL && strcmp (value, current_mono_font) == 0) | |
84 | return; // No change. | |
85 | ||
86 | xfree (current_mono_font); | |
87 | current_mono_font = xstrdup (value); | |
88 | } | |
89 | ||
90 | ||
91 | if (first_dpyinfo != NULL) | |
92 | { | |
93 | /* Check if display still open */ | |
94 | struct x_display_info *dpyinfo; | |
95 | int found = 0; | |
96 | for (dpyinfo = x_display_list; !found && dpyinfo; dpyinfo = dpyinfo->next) | |
97 | found = dpyinfo == first_dpyinfo; | |
98 | ||
99 | if (found) | |
100 | store_font_changed_event (Qfont_name, | |
101 | XCAR (first_dpyinfo->name_list_element)); | |
102 | } | |
103 | } | |
104 | #endif /* HAVE_GCONF */ | |
105 | ||
106 | #ifdef HAVE_XFT | |
107 | ||
108 | /* Find the window that contains the XSETTINGS property values. */ | |
109 | ||
110 | static void | |
111 | get_prop_window (dpyinfo) | |
112 | struct x_display_info *dpyinfo; | |
113 | { | |
114 | Display *dpy = dpyinfo->display; | |
115 | ||
116 | XGrabServer (dpy); | |
117 | dpyinfo->xsettings_window = XGetSelectionOwner (dpy, | |
118 | dpyinfo->Xatom_xsettings_sel); | |
119 | if (dpyinfo->xsettings_window != None) | |
120 | /* Select events so we can detect if window is deleted or if settings | |
121 | are changed. */ | |
122 | XSelectInput (dpy, dpyinfo->xsettings_window, | |
123 | PropertyChangeMask|StructureNotifyMask); | |
124 | ||
125 | XUngrabServer (dpy); | |
126 | } | |
127 | ||
128 | struct xsettings | |
129 | { | |
130 | FcBool aa, hinting; | |
131 | int rgba, lcdfilter, hintstyle; | |
132 | double dpi; | |
133 | }; | |
134 | ||
135 | #define SWAP32(nr) (((nr) << 24) | (((nr) << 8) & 0xff0000) \ | |
136 | | (((nr) >> 8) & 0xff00) | ((nr) >> 24)) | |
137 | #define SWAP16(nr) (((nr) << 8) | ((nr) >> 8)) | |
138 | #define PAD(nr) (((nr) + 3) & ~3) | |
139 | ||
140 | /* Parse xsettings and extract those that deal with Xft. | |
141 | See http://freedesktop.org/wiki/Specifications/XSettingsRegistry | |
142 | and http://standards.freedesktop.org/xsettings-spec/xsettings-spec-0.5.html. | |
143 | ||
144 | Layout of prop. First is a header: | |
145 | ||
146 | bytes type what | |
147 | ------------------------------------ | |
148 | 1 CARD8 byte-order | |
149 | 3 unused | |
150 | 4 CARD32 SERIAL | |
151 | 4 CARD32 N_SETTINGS | |
152 | ||
153 | Then N_SETTINGS records, with header: | |
154 | ||
155 | bytes type what | |
156 | ------------------------------------ | |
157 | 1 SETTING_TYPE type (0 = integer, 1 = string, 2 RGB color). | |
158 | 1 unused | |
159 | 2 CARD16 n == name-length | |
160 | n STRING8 name | |
161 | p unused, p=pad_to_even_4(n) | |
162 | 4 CARD32 last-change-serial | |
163 | ||
164 | and then the value, For string: | |
165 | ||
166 | bytes type what | |
167 | ------------------------------------ | |
168 | 4 CARD32 n = value-length | |
169 | n STRING8 value | |
170 | p unused, p=pad_to_even_4(n) | |
171 | ||
172 | For integer: | |
173 | ||
174 | bytes type what | |
175 | ------------------------------------ | |
176 | 4 INT32 value | |
177 | ||
178 | For RGB color: | |
179 | ||
180 | bytes type what | |
181 | ------------------------------------ | |
182 | 2 CARD16 red | |
183 | 2 CARD16 blue | |
184 | 2 CARD16 green | |
185 | 2 CARD16 alpha | |
186 | ||
187 | */ | |
188 | ||
189 | static int | |
190 | parse_xft_settings (prop, bytes, settings) | |
191 | unsigned char *prop; | |
192 | unsigned long bytes; | |
193 | struct xsettings *settings; | |
194 | { | |
195 | Lisp_Object byteorder = Fbyteorder (); | |
196 | int my_bo = XFASTINT (byteorder) == 'B' ? MSBFirst : LSBFirst; | |
197 | int that_bo = prop[0]; | |
198 | CARD32 n_settings; | |
199 | int bytes_parsed = 0; | |
200 | int settings_seen = 0; | |
201 | int i = 0; | |
202 | ||
203 | /* First 4 bytes is a serial number, skip that. */ | |
204 | ||
205 | if (bytes < 12) return BadLength; | |
206 | memcpy (&n_settings, prop+8, 4); | |
207 | if (my_bo != that_bo) n_settings = SWAP32 (n_settings); | |
208 | bytes_parsed = 12; | |
209 | ||
210 | memset (settings, 0, sizeof (*settings)); | |
211 | ||
212 | while (bytes_parsed+4 < bytes && settings_seen < 6 | |
213 | && i < n_settings) | |
214 | { | |
215 | int type = prop[bytes_parsed++]; | |
216 | CARD16 nlen; | |
217 | CARD32 vlen, ival = 0; | |
218 | char name[128]; /* The names we are looking for are not this long. */ | |
219 | char sval[128]; /* The values we are looking for are not this long. */ | |
220 | int is_xft; | |
221 | int to_cpy; | |
222 | ||
223 | sval[0] = '\0'; | |
224 | ++i; | |
225 | ++bytes_parsed; /* Padding */ | |
226 | ||
227 | memcpy (&nlen, prop+bytes_parsed, 2); | |
228 | bytes_parsed += 2; | |
229 | if (my_bo != that_bo) nlen = SWAP16 (nlen); | |
230 | if (bytes_parsed+nlen > bytes) return BadLength; | |
231 | to_cpy = nlen > 127 ? 127 : nlen; | |
232 | memcpy (name, prop+bytes_parsed, to_cpy); | |
233 | name[to_cpy] = '\0'; | |
234 | ||
235 | bytes_parsed += nlen; | |
236 | bytes_parsed = PAD (bytes_parsed); | |
237 | ||
238 | bytes_parsed += 4; /* Skip serial for this value */ | |
239 | if (bytes_parsed > bytes) return BadLength; | |
240 | ||
241 | is_xft = nlen > 6 && strncmp (name, "Xft/", 4) == 0; | |
242 | ||
243 | switch (type) | |
244 | { | |
245 | case 0: /* Integer */ | |
246 | if (bytes_parsed+4 > bytes) return BadLength; | |
247 | if (is_xft) | |
248 | { | |
249 | memcpy (&ival, prop+bytes_parsed, 4); | |
250 | if (my_bo != that_bo) ival = SWAP32 (ival); | |
251 | } | |
252 | bytes_parsed += 4; | |
253 | break; | |
254 | ||
255 | case 1: /* String */ | |
256 | if (bytes_parsed+4 > bytes) return BadLength; | |
257 | memcpy (&vlen, prop+bytes_parsed, 4); | |
258 | bytes_parsed += 4; | |
259 | if (my_bo != that_bo) vlen = SWAP32 (vlen); | |
260 | if (is_xft) | |
261 | { | |
262 | to_cpy = vlen > 127 ? 127 : vlen; | |
263 | memcpy (sval, prop+bytes_parsed, to_cpy); | |
264 | sval[to_cpy] = '\0'; | |
265 | } | |
266 | bytes_parsed += vlen; | |
267 | bytes_parsed = PAD (bytes_parsed); | |
268 | break; | |
269 | ||
270 | case 2: /* RGB value */ | |
271 | /* No need to parse this */ | |
272 | if (bytes_parsed+8 > bytes) return BadLength; | |
273 | bytes_parsed += 8; /* 4 values (r, b, g, alpha), 2 bytes each. */ | |
274 | break; | |
275 | ||
276 | default: /* Parse Error */ | |
277 | return BadValue; | |
278 | } | |
279 | ||
280 | if (is_xft) | |
281 | { | |
282 | ++settings_seen; | |
283 | if (strcmp (name, "Xft/Antialias") == 0) | |
284 | settings->aa = ival != 0; | |
285 | else if (strcmp (name, "Xft/Hinting") == 0) | |
286 | settings->hinting = ival != 0; | |
287 | else if (strcmp (name, "Xft/HintStyle") == 0) | |
288 | { | |
289 | if (strcmp (sval, "hintnone") == 0) | |
290 | settings->hintstyle = FC_HINT_NONE; | |
291 | else if (strcmp (sval, "hintslight") == 0) | |
292 | settings->hintstyle = FC_HINT_SLIGHT; | |
293 | else if (strcmp (sval, "hintmedium") == 0) | |
294 | settings->hintstyle = FC_HINT_MEDIUM; | |
295 | else if (strcmp (sval, "hintfull") == 0) | |
296 | settings->hintstyle = FC_HINT_FULL; | |
297 | } | |
298 | else if (strcmp (name, "Xft/RGBA") == 0) | |
299 | { | |
300 | if (strcmp (sval, "none") == 0) | |
301 | settings->rgba = FC_RGBA_NONE; | |
302 | else if (strcmp (sval, "rgb") == 0) | |
303 | settings->rgba = FC_RGBA_RGB; | |
304 | else if (strcmp (sval, "bgr") == 0) | |
305 | settings->rgba = FC_RGBA_BGR; | |
306 | else if (strcmp (sval, "vrgb") == 0) | |
307 | settings->rgba = FC_RGBA_VRGB; | |
308 | else if (strcmp (sval, "vbgr") == 0) | |
309 | settings->rgba = FC_RGBA_VBGR; | |
310 | } | |
311 | else if (strcmp (name, "Xft/DPI") == 0) | |
312 | settings->dpi = (double)ival/1024.0; | |
a6eb20d8 JD |
313 | #ifdef FC_LCD_FILTER |
314 | /* Older fontconfig versions don't have FC_LCD_FILTER. */ | |
637fa988 JD |
315 | else if (strcmp (name, "Xft/lcdfilter") == 0) |
316 | { | |
317 | if (strcmp (sval, "none") == 0) | |
318 | settings->lcdfilter = FC_LCD_NONE; | |
319 | else if (strcmp (sval, "lcddefault") == 0) | |
320 | settings->lcdfilter = FC_LCD_DEFAULT; | |
321 | } | |
a6eb20d8 | 322 | #endif |
637fa988 JD |
323 | } |
324 | } | |
325 | ||
326 | return Success; | |
327 | } | |
328 | ||
329 | static int | |
330 | read_xft_settings (dpyinfo, settings) | |
331 | struct x_display_info *dpyinfo; | |
332 | struct xsettings *settings; | |
333 | { | |
334 | long long_len; | |
335 | Atom act_type; | |
336 | int act_form; | |
337 | unsigned long nitems, bytes_after; | |
338 | unsigned char *prop = NULL; | |
339 | Display *dpy = dpyinfo->display; | |
340 | int rc; | |
341 | ||
342 | x_catch_errors (dpy); | |
343 | rc = XGetWindowProperty (dpy, | |
344 | dpyinfo->xsettings_window, | |
345 | dpyinfo->Xatom_xsettings_prop, | |
346 | 0, LONG_MAX, False, AnyPropertyType, | |
347 | &act_type, &act_form, &nitems, &bytes_after, | |
348 | &prop); | |
349 | ||
350 | if (rc == Success && prop != NULL && act_form == 8 && nitems > 0 | |
351 | && act_type == dpyinfo->Xatom_xsettings_prop) | |
352 | rc = parse_xft_settings (prop, nitems, settings); | |
353 | ||
354 | XFree (prop); | |
355 | ||
356 | x_uncatch_errors (); | |
357 | ||
358 | return rc == Success; | |
359 | } | |
360 | ||
361 | static void | |
362 | apply_xft_settings (dpyinfo, send_event_p) | |
363 | struct x_display_info *dpyinfo; | |
364 | int send_event_p; | |
365 | { | |
366 | FcPattern *pat; | |
367 | struct xsettings settings, oldsettings; | |
368 | int changed = 0; | |
369 | ||
370 | if (!read_xft_settings (dpyinfo, &settings)) | |
371 | return; | |
372 | ||
373 | memset (&oldsettings, 0, sizeof (oldsettings)); | |
374 | ||
375 | pat = FcPatternCreate (); | |
376 | XftDefaultSubstitute (dpyinfo->display, | |
377 | XScreenNumberOfScreen (dpyinfo->screen), | |
378 | pat); | |
379 | FcPatternGetBool (pat, FC_ANTIALIAS, 0, &oldsettings.aa); | |
380 | FcPatternGetBool (pat, FC_HINTING, 0, &oldsettings.hinting); | |
381 | FcPatternGetInteger (pat, FC_HINT_STYLE, 0, &oldsettings.hintstyle); | |
a6eb20d8 JD |
382 | #ifdef FC_LCD_FILTER |
383 | /* Older fontconfig versions don't have FC_LCD_FILTER. */ | |
637fa988 | 384 | FcPatternGetInteger (pat, FC_LCD_FILTER, 0, &oldsettings.lcdfilter); |
a6eb20d8 | 385 | #endif |
637fa988 JD |
386 | FcPatternGetInteger (pat, FC_RGBA, 0, &oldsettings.rgba); |
387 | FcPatternGetDouble (pat, FC_DPI, 0, &oldsettings.dpi); | |
388 | ||
389 | if (oldsettings.aa != settings.aa) | |
390 | { | |
391 | FcPatternDel (pat, FC_ANTIALIAS); | |
392 | FcPatternAddBool (pat, FC_ANTIALIAS, settings.aa); | |
393 | ++changed; | |
394 | } | |
395 | if (oldsettings.hinting != settings.hinting) | |
396 | { | |
397 | FcPatternDel (pat, FC_HINTING); | |
398 | FcPatternAddBool (pat, FC_HINTING, settings.hinting); | |
399 | ++changed; | |
400 | } | |
401 | if (oldsettings.rgba != settings.rgba) | |
402 | { | |
403 | FcPatternDel (pat, FC_RGBA); | |
404 | FcPatternAddInteger (pat, FC_RGBA, settings.rgba); | |
405 | ++changed; | |
406 | } | |
a6eb20d8 JD |
407 | #ifdef FC_LCD_FILTER |
408 | /* Older fontconfig versions don't have FC_LCD_FILTER. */ | |
637fa988 JD |
409 | if (oldsettings.lcdfilter != settings.lcdfilter) |
410 | { | |
411 | FcPatternDel (pat, FC_LCD_FILTER); | |
412 | FcPatternAddInteger (pat, FC_LCD_FILTER, settings.lcdfilter); | |
413 | ++changed; | |
414 | } | |
a6eb20d8 | 415 | #endif |
637fa988 JD |
416 | if (oldsettings.hintstyle != settings.hintstyle) |
417 | { | |
418 | FcPatternDel (pat, FC_HINT_STYLE); | |
419 | FcPatternAddInteger (pat, FC_HINT_STYLE, settings.hintstyle); | |
420 | ++changed; | |
421 | } | |
422 | if (oldsettings.dpi != settings.dpi) | |
423 | { | |
424 | Lisp_Object frame, tail; | |
425 | ||
426 | FcPatternDel (pat, FC_DPI); | |
427 | FcPatternAddDouble (pat, FC_DPI, settings.dpi); | |
428 | ++changed; | |
429 | ||
430 | /* Change the DPI on this display and all frames on the display. */ | |
431 | dpyinfo->resy = dpyinfo->resx = settings.dpi; | |
432 | FOR_EACH_FRAME (tail, frame) | |
433 | if (FRAME_X_P (XFRAME (frame)) | |
434 | && FRAME_X_DISPLAY_INFO (XFRAME (frame)) == dpyinfo) | |
435 | XFRAME (frame)->resy = XFRAME (frame)->resx = settings.dpi; | |
436 | } | |
437 | ||
438 | if (changed) | |
439 | { | |
440 | XftDefaultSet (dpyinfo->display, pat); | |
441 | if (send_event_p) | |
442 | store_font_changed_event (Qfont_render, | |
443 | XCAR (dpyinfo->name_list_element)); | |
444 | } | |
445 | else | |
446 | FcPatternDestroy (pat); | |
447 | } | |
448 | ||
449 | #endif /* HAVE_XFT */ | |
450 | ||
451 | void | |
452 | xft_settings_event (dpyinfo, event) | |
453 | struct x_display_info *dpyinfo; | |
454 | XEvent *event; | |
455 | { | |
456 | #ifdef HAVE_XFT | |
457 | int check_window_p = 0; | |
458 | ||
459 | switch (event->type) | |
460 | { | |
461 | case DestroyNotify: | |
462 | if (dpyinfo->xsettings_window == event->xany.window) | |
463 | check_window_p = 1; | |
464 | break; | |
465 | ||
466 | case ClientMessage: | |
467 | if (event->xclient.message_type == dpyinfo->Xatom_xsettings_mgr | |
468 | && event->xclient.data.l[1] == dpyinfo->Xatom_xsettings_sel | |
469 | && event->xclient.window == dpyinfo->root_window) | |
470 | check_window_p = 1; | |
471 | break; | |
472 | ||
473 | case PropertyNotify: | |
474 | if (event->xproperty.window == dpyinfo->xsettings_window | |
475 | && event->xproperty.state == PropertyNewValue | |
476 | && event->xproperty.atom == dpyinfo->Xatom_xsettings_prop) | |
477 | { | |
478 | apply_xft_settings (dpyinfo, True); | |
479 | } | |
480 | break; | |
481 | } | |
482 | ||
483 | if (check_window_p) | |
484 | { | |
485 | dpyinfo->xsettings_window = None; | |
486 | get_prop_window (dpyinfo); | |
487 | if (dpyinfo->xsettings_window != None) | |
488 | apply_xft_settings (dpyinfo, True); | |
489 | } | |
490 | #endif /* HAVE_XFT */ | |
491 | } | |
492 | ||
493 | ||
494 | static void | |
495 | init_gconf () | |
496 | { | |
497 | #ifdef HAVE_GCONF | |
498 | int i; | |
499 | char *s; | |
500 | /* Should be enough, this is called at startup */ | |
501 | #define N_FDS 1024 | |
502 | int fd_before[N_FDS], fd_before1[N_FDS]; | |
503 | int dummy, n_fds; | |
504 | GPollFD gfds[N_FDS]; | |
505 | ||
506 | /* To find out which filedecriptors GConf uses, check before and after. | |
507 | If we do not do this, GConf changes will only happen when Emacs gets | |
508 | an X event. */ | |
509 | memset (fd_before, 0, sizeof (fd_before)); | |
510 | n_fds = g_main_context_query (g_main_context_default (), | |
511 | G_PRIORITY_LOW, | |
512 | &dummy, | |
513 | gfds, | |
514 | N_FDS); | |
515 | for (i = 0; i < n_fds; ++i) | |
516 | if (gfds[i].fd < N_FDS && gfds[i].fd > 0 && gfds[i].events > 0) | |
517 | fd_before[gfds[i].fd] = 1; | |
518 | ||
519 | g_type_init (); | |
520 | gconf_client = gconf_client_get_default (); | |
521 | s = gconf_client_get_string (gconf_client, SYSTEM_MONO_FONT, NULL); | |
522 | if (s) | |
523 | { | |
524 | current_mono_font = xstrdup (s); | |
525 | g_free (s); | |
526 | } | |
527 | gconf_client_set_error_handling (gconf_client, GCONF_CLIENT_HANDLE_NONE); | |
528 | gconf_client_add_dir (gconf_client, | |
529 | SYSTEM_MONO_FONT, | |
530 | GCONF_CLIENT_PRELOAD_ONELEVEL, | |
531 | NULL); | |
532 | gconf_client_notify_add (gconf_client, | |
533 | SYSTEM_MONO_FONT, | |
534 | something_changedCB, | |
535 | NULL, NULL, NULL); | |
536 | n_fds = g_main_context_query (g_main_context_default (), | |
537 | G_PRIORITY_LOW, | |
538 | &dummy, | |
539 | gfds, | |
540 | N_FDS); | |
541 | ||
542 | for (i = 0; i < n_fds; ++i) | |
543 | if (gfds[i].fd < N_FDS && gfds[i].fd > 0 && gfds[i].events > 0 | |
544 | && !fd_before[gfds[i].fd]) | |
545 | { | |
546 | #ifdef F_SETOWN | |
547 | fcntl (i, F_SETOWN, getpid ()); | |
548 | #endif /* ! defined (F_SETOWN) */ | |
549 | ||
550 | #ifdef SIGIO | |
551 | if (interrupt_input) | |
552 | init_sigio (i); | |
553 | #endif /* ! defined (SIGIO) */ | |
554 | } | |
555 | #endif /* HAVE_GCONF */ | |
556 | } | |
557 | ||
558 | static void | |
559 | init_xfd_settings (dpyinfo) | |
560 | struct x_display_info *dpyinfo; | |
561 | { | |
562 | #ifdef HAVE_XFT | |
563 | char sel[64]; | |
564 | Display *dpy = dpyinfo->display; | |
565 | ||
566 | BLOCK_INPUT; | |
567 | ||
568 | sprintf (sel, "_XSETTINGS_S%d", XScreenNumberOfScreen (dpyinfo->screen)); | |
569 | dpyinfo->Xatom_xsettings_sel = XInternAtom (dpy, sel, False); | |
570 | dpyinfo->Xatom_xsettings_prop = XInternAtom (dpy, | |
571 | "_XSETTINGS_SETTINGS", | |
572 | False); | |
573 | dpyinfo->Xatom_xsettings_mgr = XInternAtom (dpy, "MANAGER", False); | |
574 | ||
575 | /* Select events so we can detect client messages sent when selection | |
576 | owner changes. */ | |
577 | XSelectInput (dpy, dpyinfo->root_window, StructureNotifyMask); | |
578 | ||
579 | get_prop_window (dpyinfo); | |
580 | if (dpyinfo->xsettings_window != None) | |
581 | apply_xft_settings (dpyinfo, False); | |
582 | ||
583 | UNBLOCK_INPUT; | |
584 | ||
585 | #else /* ! HAVE_XFT */ | |
586 | ||
587 | dpyinfo->Xatom_xsettings_sel = None; | |
588 | dpyinfo->Xatom_xsettings_prop = None; | |
589 | dpyinfo->Xatom_xsettings_mgr = None; | |
590 | dpyinfo->xsettings_window = None; | |
591 | ||
592 | #endif /* ! HAVE_XFT */ | |
593 | } | |
594 | ||
595 | void | |
596 | xsettings_initialize (dpyinfo) | |
597 | struct x_display_info *dpyinfo; | |
598 | { | |
599 | if (first_dpyinfo == NULL) first_dpyinfo = dpyinfo; | |
600 | init_gconf (); | |
601 | init_xfd_settings (dpyinfo); | |
602 | } | |
603 | ||
604 | ||
605 | DEFUN ("font-get-system-font", Ffont_get_system_font, Sfont_get_system_font, | |
606 | 0, 0, 0, | |
607 | doc: /* Get the system default monospaced font. */) | |
608 | () | |
609 | { | |
610 | return current_mono_font | |
611 | ? make_string (current_mono_font, strlen (current_mono_font)) | |
612 | : Qnil; | |
613 | } | |
614 | ||
615 | void | |
616 | syms_of_xsettings () | |
617 | { | |
618 | current_mono_font = NULL; | |
619 | first_dpyinfo = NULL; | |
620 | #ifdef HAVE_GCONF | |
621 | gconf_client = NULL; | |
622 | #endif | |
623 | ||
624 | Qfont_name = intern_c_string ("font-name"); | |
625 | staticpro (&Qfont_name); | |
626 | Qfont_render = intern_c_string ("font-render"); | |
627 | staticpro (&Qfont_render); | |
628 | defsubr (&Sfont_get_system_font); | |
629 | ||
630 | #ifdef HAVE_GCONF | |
631 | Fprovide (intern_c_string ("system-font-setting"), Qnil); | |
632 | #endif | |
633 | #ifdef HAVE_XFT | |
634 | Fprovide (intern_c_string ("font-render-setting"), Qnil); | |
635 | #endif | |
636 | } |