Commit | Line | Data |
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637fa988 | 1 | /* Functions for handle font changes dynamically. |
114f9c96 | 2 | Copyright (C) 2009, 2010 |
637fa988 JD |
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; |
67477f30 JD |
45 | static Lisp_Object Vxft_settings; |
46 | ||
637fa988 JD |
47 | |
48 | #ifdef HAVE_GCONF | |
49 | static GConfClient *gconf_client; | |
50 | #endif | |
51 | ||
52 | ||
53 | static void | |
54 | store_font_changed_event (arg, display_name) | |
55 | Lisp_Object arg; | |
56 | Lisp_Object display_name; | |
57 | { | |
58 | struct input_event event; | |
59 | EVENT_INIT (event); | |
60 | event.kind = CONFIG_CHANGED_EVENT; | |
61 | event.frame_or_window = display_name; | |
62 | event.arg = arg; | |
63 | kbd_buffer_store_event (&event); | |
64 | } | |
65 | ||
66 | #ifdef HAVE_GCONF | |
67 | ||
68 | #define SYSTEM_MONO_FONT "/desktop/gnome/interface/monospace_font_name" | |
69 | ||
70 | /* Callback called when something changed in GConf that we care about, | |
71 | that is SYSTEM_MONO_FONT. */ | |
72 | ||
73 | static void | |
74 | something_changedCB (client, cnxn_id, entry, user_data) | |
75 | GConfClient *client; | |
76 | guint cnxn_id; | |
77 | GConfEntry *entry; | |
78 | gpointer user_data; | |
79 | { | |
80 | GConfValue *v = gconf_entry_get_value (entry); | |
81 | ||
82 | if (!v) return; | |
83 | if (v->type == GCONF_VALUE_STRING) | |
84 | { | |
85 | const char *value = gconf_value_get_string (v); | |
86 | int i; | |
87 | if (current_mono_font != NULL && strcmp (value, current_mono_font) == 0) | |
872870b2 | 88 | return; /* No change. */ |
637fa988 JD |
89 | |
90 | xfree (current_mono_font); | |
91 | current_mono_font = xstrdup (value); | |
92 | } | |
93 | ||
94 | ||
95 | if (first_dpyinfo != NULL) | |
96 | { | |
97 | /* Check if display still open */ | |
98 | struct x_display_info *dpyinfo; | |
99 | int found = 0; | |
100 | for (dpyinfo = x_display_list; !found && dpyinfo; dpyinfo = dpyinfo->next) | |
101 | found = dpyinfo == first_dpyinfo; | |
102 | ||
dfb3c4c6 | 103 | if (found && use_system_font) |
637fa988 JD |
104 | store_font_changed_event (Qfont_name, |
105 | XCAR (first_dpyinfo->name_list_element)); | |
106 | } | |
107 | } | |
108 | #endif /* HAVE_GCONF */ | |
109 | ||
110 | #ifdef HAVE_XFT | |
111 | ||
21050de1 JD |
112 | /* Older fontconfig versions don't have FC_LCD_*. */ |
113 | #ifndef FC_LCD_NONE | |
114 | #define FC_LCD_NONE 0 | |
115 | #endif | |
116 | #ifndef FC_LCD_DEFAULT | |
117 | #define FC_LCD_DEFAULT 1 | |
118 | #endif | |
119 | #ifndef FC_LCD_FILTER | |
120 | #define FC_LCD_FILTER "lcdfilter" | |
121 | #endif | |
122 | ||
637fa988 JD |
123 | /* Find the window that contains the XSETTINGS property values. */ |
124 | ||
125 | static void | |
126 | get_prop_window (dpyinfo) | |
127 | struct x_display_info *dpyinfo; | |
128 | { | |
129 | Display *dpy = dpyinfo->display; | |
130 | ||
131 | XGrabServer (dpy); | |
132 | dpyinfo->xsettings_window = XGetSelectionOwner (dpy, | |
133 | dpyinfo->Xatom_xsettings_sel); | |
134 | if (dpyinfo->xsettings_window != None) | |
135 | /* Select events so we can detect if window is deleted or if settings | |
136 | are changed. */ | |
137 | XSelectInput (dpy, dpyinfo->xsettings_window, | |
138 | PropertyChangeMask|StructureNotifyMask); | |
139 | ||
140 | XUngrabServer (dpy); | |
141 | } | |
142 | ||
3c055b77 JD |
143 | enum { |
144 | SEEN_AA = 0x01, | |
145 | SEEN_HINTING = 0x02, | |
146 | SEEN_RGBA = 0x04, | |
147 | SEEN_LCDFILTER = 0x08, | |
148 | SEEN_HINTSTYLE = 0x10, | |
149 | SEEN_DPI = 0x20, | |
150 | }; | |
637fa988 JD |
151 | struct xsettings |
152 | { | |
153 | FcBool aa, hinting; | |
154 | int rgba, lcdfilter, hintstyle; | |
155 | double dpi; | |
3c055b77 JD |
156 | |
157 | unsigned seen; | |
637fa988 JD |
158 | }; |
159 | ||
160 | #define SWAP32(nr) (((nr) << 24) | (((nr) << 8) & 0xff0000) \ | |
161 | | (((nr) >> 8) & 0xff00) | ((nr) >> 24)) | |
162 | #define SWAP16(nr) (((nr) << 8) | ((nr) >> 8)) | |
163 | #define PAD(nr) (((nr) + 3) & ~3) | |
164 | ||
165 | /* Parse xsettings and extract those that deal with Xft. | |
166 | See http://freedesktop.org/wiki/Specifications/XSettingsRegistry | |
167 | and http://standards.freedesktop.org/xsettings-spec/xsettings-spec-0.5.html. | |
168 | ||
169 | Layout of prop. First is a header: | |
170 | ||
171 | bytes type what | |
172 | ------------------------------------ | |
173 | 1 CARD8 byte-order | |
174 | 3 unused | |
175 | 4 CARD32 SERIAL | |
176 | 4 CARD32 N_SETTINGS | |
177 | ||
178 | Then N_SETTINGS records, with header: | |
179 | ||
180 | bytes type what | |
181 | ------------------------------------ | |
182 | 1 SETTING_TYPE type (0 = integer, 1 = string, 2 RGB color). | |
183 | 1 unused | |
184 | 2 CARD16 n == name-length | |
185 | n STRING8 name | |
186 | p unused, p=pad_to_even_4(n) | |
187 | 4 CARD32 last-change-serial | |
188 | ||
189 | and then the value, For string: | |
190 | ||
191 | bytes type what | |
192 | ------------------------------------ | |
193 | 4 CARD32 n = value-length | |
194 | n STRING8 value | |
195 | p unused, p=pad_to_even_4(n) | |
196 | ||
197 | For integer: | |
198 | ||
199 | bytes type what | |
200 | ------------------------------------ | |
201 | 4 INT32 value | |
202 | ||
203 | For RGB color: | |
204 | ||
205 | bytes type what | |
206 | ------------------------------------ | |
207 | 2 CARD16 red | |
208 | 2 CARD16 blue | |
209 | 2 CARD16 green | |
210 | 2 CARD16 alpha | |
211 | ||
3c055b77 | 212 | Returns non-zero if some Xft settings was seen, zero otherwise. |
637fa988 JD |
213 | */ |
214 | ||
215 | static int | |
216 | parse_xft_settings (prop, bytes, settings) | |
217 | unsigned char *prop; | |
218 | unsigned long bytes; | |
219 | struct xsettings *settings; | |
220 | { | |
221 | Lisp_Object byteorder = Fbyteorder (); | |
222 | int my_bo = XFASTINT (byteorder) == 'B' ? MSBFirst : LSBFirst; | |
223 | int that_bo = prop[0]; | |
224 | CARD32 n_settings; | |
225 | int bytes_parsed = 0; | |
226 | int settings_seen = 0; | |
227 | int i = 0; | |
228 | ||
229 | /* First 4 bytes is a serial number, skip that. */ | |
230 | ||
231 | if (bytes < 12) return BadLength; | |
232 | memcpy (&n_settings, prop+8, 4); | |
233 | if (my_bo != that_bo) n_settings = SWAP32 (n_settings); | |
234 | bytes_parsed = 12; | |
235 | ||
236 | memset (settings, 0, sizeof (*settings)); | |
237 | ||
238 | while (bytes_parsed+4 < bytes && settings_seen < 6 | |
239 | && i < n_settings) | |
240 | { | |
241 | int type = prop[bytes_parsed++]; | |
242 | CARD16 nlen; | |
243 | CARD32 vlen, ival = 0; | |
244 | char name[128]; /* The names we are looking for are not this long. */ | |
245 | char sval[128]; /* The values we are looking for are not this long. */ | |
246 | int is_xft; | |
247 | int to_cpy; | |
248 | ||
249 | sval[0] = '\0'; | |
250 | ++i; | |
251 | ++bytes_parsed; /* Padding */ | |
252 | ||
253 | memcpy (&nlen, prop+bytes_parsed, 2); | |
254 | bytes_parsed += 2; | |
255 | if (my_bo != that_bo) nlen = SWAP16 (nlen); | |
256 | if (bytes_parsed+nlen > bytes) return BadLength; | |
257 | to_cpy = nlen > 127 ? 127 : nlen; | |
258 | memcpy (name, prop+bytes_parsed, to_cpy); | |
259 | name[to_cpy] = '\0'; | |
260 | ||
261 | bytes_parsed += nlen; | |
262 | bytes_parsed = PAD (bytes_parsed); | |
263 | ||
264 | bytes_parsed += 4; /* Skip serial for this value */ | |
265 | if (bytes_parsed > bytes) return BadLength; | |
266 | ||
267 | is_xft = nlen > 6 && strncmp (name, "Xft/", 4) == 0; | |
268 | ||
269 | switch (type) | |
270 | { | |
271 | case 0: /* Integer */ | |
272 | if (bytes_parsed+4 > bytes) return BadLength; | |
273 | if (is_xft) | |
274 | { | |
275 | memcpy (&ival, prop+bytes_parsed, 4); | |
276 | if (my_bo != that_bo) ival = SWAP32 (ival); | |
277 | } | |
278 | bytes_parsed += 4; | |
279 | break; | |
280 | ||
281 | case 1: /* String */ | |
282 | if (bytes_parsed+4 > bytes) return BadLength; | |
283 | memcpy (&vlen, prop+bytes_parsed, 4); | |
284 | bytes_parsed += 4; | |
285 | if (my_bo != that_bo) vlen = SWAP32 (vlen); | |
286 | if (is_xft) | |
287 | { | |
288 | to_cpy = vlen > 127 ? 127 : vlen; | |
289 | memcpy (sval, prop+bytes_parsed, to_cpy); | |
290 | sval[to_cpy] = '\0'; | |
291 | } | |
292 | bytes_parsed += vlen; | |
293 | bytes_parsed = PAD (bytes_parsed); | |
294 | break; | |
295 | ||
296 | case 2: /* RGB value */ | |
297 | /* No need to parse this */ | |
298 | if (bytes_parsed+8 > bytes) return BadLength; | |
299 | bytes_parsed += 8; /* 4 values (r, b, g, alpha), 2 bytes each. */ | |
300 | break; | |
301 | ||
302 | default: /* Parse Error */ | |
303 | return BadValue; | |
304 | } | |
305 | ||
306 | if (is_xft) | |
307 | { | |
308 | ++settings_seen; | |
309 | if (strcmp (name, "Xft/Antialias") == 0) | |
3c055b77 JD |
310 | { |
311 | settings->seen |= SEEN_AA; | |
312 | settings->aa = ival != 0; | |
313 | } | |
637fa988 | 314 | else if (strcmp (name, "Xft/Hinting") == 0) |
3c055b77 JD |
315 | { |
316 | settings->seen |= SEEN_HINTING; | |
317 | settings->hinting = ival != 0; | |
318 | } | |
637fa988 JD |
319 | else if (strcmp (name, "Xft/HintStyle") == 0) |
320 | { | |
3c055b77 | 321 | settings->seen |= SEEN_HINTSTYLE; |
637fa988 JD |
322 | if (strcmp (sval, "hintnone") == 0) |
323 | settings->hintstyle = FC_HINT_NONE; | |
324 | else if (strcmp (sval, "hintslight") == 0) | |
325 | settings->hintstyle = FC_HINT_SLIGHT; | |
326 | else if (strcmp (sval, "hintmedium") == 0) | |
327 | settings->hintstyle = FC_HINT_MEDIUM; | |
328 | else if (strcmp (sval, "hintfull") == 0) | |
329 | settings->hintstyle = FC_HINT_FULL; | |
3c055b77 JD |
330 | else |
331 | settings->seen &= ~SEEN_HINTSTYLE; | |
637fa988 JD |
332 | } |
333 | else if (strcmp (name, "Xft/RGBA") == 0) | |
334 | { | |
3c055b77 | 335 | settings->seen |= SEEN_RGBA; |
637fa988 JD |
336 | if (strcmp (sval, "none") == 0) |
337 | settings->rgba = FC_RGBA_NONE; | |
338 | else if (strcmp (sval, "rgb") == 0) | |
339 | settings->rgba = FC_RGBA_RGB; | |
340 | else if (strcmp (sval, "bgr") == 0) | |
341 | settings->rgba = FC_RGBA_BGR; | |
342 | else if (strcmp (sval, "vrgb") == 0) | |
343 | settings->rgba = FC_RGBA_VRGB; | |
344 | else if (strcmp (sval, "vbgr") == 0) | |
345 | settings->rgba = FC_RGBA_VBGR; | |
3c055b77 JD |
346 | else |
347 | settings->seen &= ~SEEN_RGBA; | |
637fa988 JD |
348 | } |
349 | else if (strcmp (name, "Xft/DPI") == 0) | |
3c055b77 JD |
350 | { |
351 | settings->seen |= SEEN_DPI; | |
352 | settings->dpi = (double)ival/1024.0; | |
353 | } | |
637fa988 JD |
354 | else if (strcmp (name, "Xft/lcdfilter") == 0) |
355 | { | |
3c055b77 | 356 | settings->seen |= SEEN_LCDFILTER; |
637fa988 JD |
357 | if (strcmp (sval, "none") == 0) |
358 | settings->lcdfilter = FC_LCD_NONE; | |
359 | else if (strcmp (sval, "lcddefault") == 0) | |
360 | settings->lcdfilter = FC_LCD_DEFAULT; | |
3c055b77 JD |
361 | else |
362 | settings->seen &= ~SEEN_LCDFILTER; | |
637fa988 JD |
363 | } |
364 | } | |
365 | } | |
366 | ||
3c055b77 | 367 | return settings_seen; |
637fa988 JD |
368 | } |
369 | ||
370 | static int | |
371 | read_xft_settings (dpyinfo, settings) | |
372 | struct x_display_info *dpyinfo; | |
373 | struct xsettings *settings; | |
374 | { | |
375 | long long_len; | |
376 | Atom act_type; | |
377 | int act_form; | |
378 | unsigned long nitems, bytes_after; | |
379 | unsigned char *prop = NULL; | |
380 | Display *dpy = dpyinfo->display; | |
381 | int rc; | |
382 | ||
383 | x_catch_errors (dpy); | |
384 | rc = XGetWindowProperty (dpy, | |
385 | dpyinfo->xsettings_window, | |
386 | dpyinfo->Xatom_xsettings_prop, | |
387 | 0, LONG_MAX, False, AnyPropertyType, | |
388 | &act_type, &act_form, &nitems, &bytes_after, | |
389 | &prop); | |
390 | ||
391 | if (rc == Success && prop != NULL && act_form == 8 && nitems > 0 | |
392 | && act_type == dpyinfo->Xatom_xsettings_prop) | |
393 | rc = parse_xft_settings (prop, nitems, settings); | |
394 | ||
395 | XFree (prop); | |
396 | ||
397 | x_uncatch_errors (); | |
398 | ||
3c055b77 | 399 | return rc != 0; |
637fa988 JD |
400 | } |
401 | ||
581e51e8 | 402 | |
637fa988 JD |
403 | static void |
404 | apply_xft_settings (dpyinfo, send_event_p) | |
405 | struct x_display_info *dpyinfo; | |
406 | int send_event_p; | |
407 | { | |
408 | FcPattern *pat; | |
409 | struct xsettings settings, oldsettings; | |
410 | int changed = 0; | |
67477f30 | 411 | char buf[256]; |
637fa988 JD |
412 | |
413 | if (!read_xft_settings (dpyinfo, &settings)) | |
414 | return; | |
415 | ||
416 | memset (&oldsettings, 0, sizeof (oldsettings)); | |
67477f30 | 417 | buf[0] = '\0'; |
637fa988 JD |
418 | pat = FcPatternCreate (); |
419 | XftDefaultSubstitute (dpyinfo->display, | |
420 | XScreenNumberOfScreen (dpyinfo->screen), | |
421 | pat); | |
422 | FcPatternGetBool (pat, FC_ANTIALIAS, 0, &oldsettings.aa); | |
423 | FcPatternGetBool (pat, FC_HINTING, 0, &oldsettings.hinting); | |
424 | FcPatternGetInteger (pat, FC_HINT_STYLE, 0, &oldsettings.hintstyle); | |
425 | FcPatternGetInteger (pat, FC_LCD_FILTER, 0, &oldsettings.lcdfilter); | |
426 | FcPatternGetInteger (pat, FC_RGBA, 0, &oldsettings.rgba); | |
427 | FcPatternGetDouble (pat, FC_DPI, 0, &oldsettings.dpi); | |
428 | ||
3c055b77 | 429 | if ((settings.seen & SEEN_AA) != 0 && oldsettings.aa != settings.aa) |
637fa988 JD |
430 | { |
431 | FcPatternDel (pat, FC_ANTIALIAS); | |
432 | FcPatternAddBool (pat, FC_ANTIALIAS, settings.aa); | |
433 | ++changed; | |
67477f30 | 434 | oldsettings.aa = settings.aa; |
637fa988 | 435 | } |
67477f30 JD |
436 | sprintf (buf, "Antialias: %d", oldsettings.aa); |
437 | ||
3c055b77 JD |
438 | if ((settings.seen & SEEN_HINTING) != 0 |
439 | && oldsettings.hinting != settings.hinting) | |
637fa988 JD |
440 | { |
441 | FcPatternDel (pat, FC_HINTING); | |
442 | FcPatternAddBool (pat, FC_HINTING, settings.hinting); | |
443 | ++changed; | |
67477f30 | 444 | oldsettings.hinting = settings.hinting; |
637fa988 | 445 | } |
67477f30 JD |
446 | if (strlen (buf) > 0) strcat (buf, ", "); |
447 | sprintf (buf+strlen (buf), "Hinting: %d", oldsettings.hinting); | |
3c055b77 | 448 | if ((settings.seen & SEEN_RGBA) != 0 && oldsettings.rgba != settings.rgba) |
637fa988 JD |
449 | { |
450 | FcPatternDel (pat, FC_RGBA); | |
451 | FcPatternAddInteger (pat, FC_RGBA, settings.rgba); | |
67477f30 | 452 | oldsettings.rgba = settings.rgba; |
637fa988 JD |
453 | ++changed; |
454 | } | |
67477f30 JD |
455 | if (strlen (buf) > 0) strcat (buf, ", "); |
456 | sprintf (buf+strlen (buf), "RGBA: %d", oldsettings.rgba); | |
457 | ||
a6eb20d8 | 458 | /* Older fontconfig versions don't have FC_LCD_FILTER. */ |
3c055b77 JD |
459 | if ((settings.seen & SEEN_LCDFILTER) != 0 |
460 | && oldsettings.lcdfilter != settings.lcdfilter) | |
637fa988 JD |
461 | { |
462 | FcPatternDel (pat, FC_LCD_FILTER); | |
463 | FcPatternAddInteger (pat, FC_LCD_FILTER, settings.lcdfilter); | |
464 | ++changed; | |
67477f30 | 465 | oldsettings.lcdfilter = settings.lcdfilter; |
637fa988 | 466 | } |
67477f30 JD |
467 | if (strlen (buf) > 0) strcat (buf, ", "); |
468 | sprintf (buf+strlen (buf), "LCDFilter: %d", oldsettings.lcdfilter); | |
469 | ||
3c055b77 JD |
470 | if ((settings.seen & SEEN_HINTSTYLE) != 0 |
471 | && oldsettings.hintstyle != settings.hintstyle) | |
637fa988 JD |
472 | { |
473 | FcPatternDel (pat, FC_HINT_STYLE); | |
474 | FcPatternAddInteger (pat, FC_HINT_STYLE, settings.hintstyle); | |
475 | ++changed; | |
67477f30 | 476 | oldsettings.hintstyle = settings.hintstyle; |
637fa988 | 477 | } |
67477f30 JD |
478 | if (strlen (buf) > 0) strcat (buf, ", "); |
479 | sprintf (buf+strlen (buf), "Hintstyle: %d", oldsettings.hintstyle); | |
480 | ||
3c055b77 JD |
481 | if ((settings.seen & SEEN_DPI) != 0 && oldsettings.dpi != settings.dpi |
482 | && settings.dpi > 0) | |
637fa988 JD |
483 | { |
484 | Lisp_Object frame, tail; | |
485 | ||
486 | FcPatternDel (pat, FC_DPI); | |
487 | FcPatternAddDouble (pat, FC_DPI, settings.dpi); | |
488 | ++changed; | |
67477f30 JD |
489 | oldsettings.dpi = settings.dpi; |
490 | ||
637fa988 JD |
491 | /* Change the DPI on this display and all frames on the display. */ |
492 | dpyinfo->resy = dpyinfo->resx = settings.dpi; | |
493 | FOR_EACH_FRAME (tail, frame) | |
494 | if (FRAME_X_P (XFRAME (frame)) | |
495 | && FRAME_X_DISPLAY_INFO (XFRAME (frame)) == dpyinfo) | |
496 | XFRAME (frame)->resy = XFRAME (frame)->resx = settings.dpi; | |
497 | } | |
498 | ||
67477f30 JD |
499 | if (strlen (buf) > 0) strcat (buf, ", "); |
500 | sprintf (buf+strlen (buf), "DPI: %lf", oldsettings.dpi); | |
501 | ||
637fa988 JD |
502 | if (changed) |
503 | { | |
504 | XftDefaultSet (dpyinfo->display, pat); | |
505 | if (send_event_p) | |
506 | store_font_changed_event (Qfont_render, | |
507 | XCAR (dpyinfo->name_list_element)); | |
67477f30 | 508 | Vxft_settings = make_string (buf, strlen (buf)); |
637fa988 JD |
509 | } |
510 | else | |
511 | FcPatternDestroy (pat); | |
512 | } | |
513 | ||
514 | #endif /* HAVE_XFT */ | |
515 | ||
516 | void | |
517 | xft_settings_event (dpyinfo, event) | |
518 | struct x_display_info *dpyinfo; | |
519 | XEvent *event; | |
520 | { | |
521 | #ifdef HAVE_XFT | |
522 | int check_window_p = 0; | |
523 | ||
524 | switch (event->type) | |
525 | { | |
526 | case DestroyNotify: | |
527 | if (dpyinfo->xsettings_window == event->xany.window) | |
528 | check_window_p = 1; | |
529 | break; | |
530 | ||
531 | case ClientMessage: | |
532 | if (event->xclient.message_type == dpyinfo->Xatom_xsettings_mgr | |
533 | && event->xclient.data.l[1] == dpyinfo->Xatom_xsettings_sel | |
534 | && event->xclient.window == dpyinfo->root_window) | |
535 | check_window_p = 1; | |
536 | break; | |
537 | ||
538 | case PropertyNotify: | |
539 | if (event->xproperty.window == dpyinfo->xsettings_window | |
540 | && event->xproperty.state == PropertyNewValue | |
541 | && event->xproperty.atom == dpyinfo->Xatom_xsettings_prop) | |
542 | { | |
543 | apply_xft_settings (dpyinfo, True); | |
544 | } | |
545 | break; | |
546 | } | |
547 | ||
548 | if (check_window_p) | |
549 | { | |
550 | dpyinfo->xsettings_window = None; | |
551 | get_prop_window (dpyinfo); | |
552 | if (dpyinfo->xsettings_window != None) | |
553 | apply_xft_settings (dpyinfo, True); | |
554 | } | |
555 | #endif /* HAVE_XFT */ | |
556 | } | |
557 | ||
558 | ||
559 | static void | |
560 | init_gconf () | |
561 | { | |
0d1d0d26 | 562 | #if defined (HAVE_GCONF) && defined (HAVE_XFT) |
637fa988 JD |
563 | int i; |
564 | char *s; | |
637fa988 JD |
565 | |
566 | g_type_init (); | |
567 | gconf_client = gconf_client_get_default (); | |
568 | s = gconf_client_get_string (gconf_client, SYSTEM_MONO_FONT, NULL); | |
569 | if (s) | |
570 | { | |
571 | current_mono_font = xstrdup (s); | |
572 | g_free (s); | |
573 | } | |
574 | gconf_client_set_error_handling (gconf_client, GCONF_CLIENT_HANDLE_NONE); | |
575 | gconf_client_add_dir (gconf_client, | |
576 | SYSTEM_MONO_FONT, | |
577 | GCONF_CLIENT_PRELOAD_ONELEVEL, | |
578 | NULL); | |
579 | gconf_client_notify_add (gconf_client, | |
580 | SYSTEM_MONO_FONT, | |
581 | something_changedCB, | |
582 | NULL, NULL, NULL); | |
0d1d0d26 | 583 | #endif /* HAVE_GCONF && HAVE_XFT */ |
637fa988 JD |
584 | } |
585 | ||
586 | static void | |
587 | init_xfd_settings (dpyinfo) | |
588 | struct x_display_info *dpyinfo; | |
589 | { | |
590 | #ifdef HAVE_XFT | |
591 | char sel[64]; | |
592 | Display *dpy = dpyinfo->display; | |
593 | ||
594 | BLOCK_INPUT; | |
595 | ||
596 | sprintf (sel, "_XSETTINGS_S%d", XScreenNumberOfScreen (dpyinfo->screen)); | |
597 | dpyinfo->Xatom_xsettings_sel = XInternAtom (dpy, sel, False); | |
598 | dpyinfo->Xatom_xsettings_prop = XInternAtom (dpy, | |
599 | "_XSETTINGS_SETTINGS", | |
600 | False); | |
601 | dpyinfo->Xatom_xsettings_mgr = XInternAtom (dpy, "MANAGER", False); | |
602 | ||
603 | /* Select events so we can detect client messages sent when selection | |
604 | owner changes. */ | |
605 | XSelectInput (dpy, dpyinfo->root_window, StructureNotifyMask); | |
606 | ||
607 | get_prop_window (dpyinfo); | |
608 | if (dpyinfo->xsettings_window != None) | |
609 | apply_xft_settings (dpyinfo, False); | |
610 | ||
611 | UNBLOCK_INPUT; | |
612 | ||
613 | #else /* ! HAVE_XFT */ | |
614 | ||
615 | dpyinfo->Xatom_xsettings_sel = None; | |
616 | dpyinfo->Xatom_xsettings_prop = None; | |
617 | dpyinfo->Xatom_xsettings_mgr = None; | |
618 | dpyinfo->xsettings_window = None; | |
619 | ||
620 | #endif /* ! HAVE_XFT */ | |
621 | } | |
622 | ||
623 | void | |
624 | xsettings_initialize (dpyinfo) | |
625 | struct x_display_info *dpyinfo; | |
626 | { | |
627 | if (first_dpyinfo == NULL) first_dpyinfo = dpyinfo; | |
628 | init_gconf (); | |
629 | init_xfd_settings (dpyinfo); | |
630 | } | |
631 | ||
0d1d0d26 JD |
632 | const char * |
633 | xsettings_get_system_font () | |
634 | { | |
635 | return current_mono_font; | |
636 | } | |
637fa988 JD |
637 | |
638 | DEFUN ("font-get-system-font", Ffont_get_system_font, Sfont_get_system_font, | |
639 | 0, 0, 0, | |
640 | doc: /* Get the system default monospaced font. */) | |
641 | () | |
642 | { | |
dfb3c4c6 | 643 | return current_mono_font && use_system_font |
637fa988 JD |
644 | ? make_string (current_mono_font, strlen (current_mono_font)) |
645 | : Qnil; | |
646 | } | |
647 | ||
648 | void | |
649 | syms_of_xsettings () | |
650 | { | |
651 | current_mono_font = NULL; | |
652 | first_dpyinfo = NULL; | |
653 | #ifdef HAVE_GCONF | |
654 | gconf_client = NULL; | |
655 | #endif | |
656 | ||
657 | Qfont_name = intern_c_string ("font-name"); | |
658 | staticpro (&Qfont_name); | |
659 | Qfont_render = intern_c_string ("font-render"); | |
660 | staticpro (&Qfont_render); | |
661 | defsubr (&Sfont_get_system_font); | |
662 | ||
dfb3c4c6 JD |
663 | DEFVAR_BOOL ("font-use-system-font", &use_system_font, |
664 | doc: /* *Non-nil means to use the system defined font. */); | |
665 | use_system_font = 0; | |
666 | ||
67477f30 JD |
667 | DEFVAR_LISP ("xft-settings", &Vxft_settings, |
668 | doc: /* Font settings applied to Xft. */); | |
669 | Vxft_settings = make_string ("", 0); | |
670 | ||
0d1d0d26 JD |
671 | #ifdef HAVE_XFT |
672 | Fprovide (intern_c_string ("font-render-setting"), Qnil); | |
637fa988 JD |
673 | #ifdef HAVE_GCONF |
674 | Fprovide (intern_c_string ("system-font-setting"), Qnil); | |
675 | #endif | |
637fa988 JD |
676 | #endif |
677 | } | |
964f5b2b MB |
678 | |
679 | /* arch-tag: 541716ed-2e6b-42e1-8212-3197e01ea61d | |
680 | (do not change this comment) */ |