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; | |
99852628 | 42 | static char *current_font; |
637fa988 JD |
43 | static struct x_display_info *first_dpyinfo; |
44 | static Lisp_Object Qfont_name, Qfont_render; | |
dfb3c4c6 | 45 | static int use_system_font; |
67477f30 JD |
46 | static Lisp_Object Vxft_settings; |
47 | ||
637fa988 JD |
48 | |
49 | #ifdef HAVE_GCONF | |
50 | static GConfClient *gconf_client; | |
51 | #endif | |
52 | ||
53 | ||
54 | static void | |
55 | store_font_changed_event (arg, display_name) | |
56 | Lisp_Object arg; | |
57 | Lisp_Object display_name; | |
58 | { | |
59 | struct input_event event; | |
60 | EVENT_INIT (event); | |
61 | event.kind = CONFIG_CHANGED_EVENT; | |
62 | event.frame_or_window = display_name; | |
63 | event.arg = arg; | |
64 | kbd_buffer_store_event (&event); | |
65 | } | |
66 | ||
0269ef77 JD |
67 | #define XSETTINGS_FONT_NAME "Gtk/FontName" |
68 | ||
637fa988 JD |
69 | #ifdef HAVE_GCONF |
70 | ||
99852628 JD |
71 | #define SYSTEM_MONO_FONT "/desktop/gnome/interface/monospace_font_name" |
72 | #define SYSTEM_FONT "/desktop/gnome/interface/font_name" | |
637fa988 JD |
73 | |
74 | /* Callback called when something changed in GConf that we care about, | |
75 | that is SYSTEM_MONO_FONT. */ | |
76 | ||
77 | static void | |
78 | something_changedCB (client, cnxn_id, entry, user_data) | |
79 | GConfClient *client; | |
80 | guint cnxn_id; | |
81 | GConfEntry *entry; | |
82 | gpointer user_data; | |
83 | { | |
84 | GConfValue *v = gconf_entry_get_value (entry); | |
85 | ||
86 | if (!v) return; | |
87 | if (v->type == GCONF_VALUE_STRING) | |
88 | { | |
89 | const char *value = gconf_value_get_string (v); | |
90 | int i; | |
91 | if (current_mono_font != NULL && strcmp (value, current_mono_font) == 0) | |
872870b2 | 92 | return; /* No change. */ |
637fa988 JD |
93 | |
94 | xfree (current_mono_font); | |
95 | current_mono_font = xstrdup (value); | |
96 | } | |
97 | ||
98 | ||
99 | if (first_dpyinfo != NULL) | |
100 | { | |
101 | /* Check if display still open */ | |
102 | struct x_display_info *dpyinfo; | |
103 | int found = 0; | |
104 | for (dpyinfo = x_display_list; !found && dpyinfo; dpyinfo = dpyinfo->next) | |
105 | found = dpyinfo == first_dpyinfo; | |
106 | ||
dfb3c4c6 | 107 | if (found && use_system_font) |
637fa988 JD |
108 | store_font_changed_event (Qfont_name, |
109 | XCAR (first_dpyinfo->name_list_element)); | |
110 | } | |
111 | } | |
112 | #endif /* HAVE_GCONF */ | |
113 | ||
114 | #ifdef HAVE_XFT | |
115 | ||
21050de1 JD |
116 | /* Older fontconfig versions don't have FC_LCD_*. */ |
117 | #ifndef FC_LCD_NONE | |
118 | #define FC_LCD_NONE 0 | |
119 | #endif | |
120 | #ifndef FC_LCD_DEFAULT | |
121 | #define FC_LCD_DEFAULT 1 | |
122 | #endif | |
123 | #ifndef FC_LCD_FILTER | |
124 | #define FC_LCD_FILTER "lcdfilter" | |
125 | #endif | |
126 | ||
637fa988 JD |
127 | /* Find the window that contains the XSETTINGS property values. */ |
128 | ||
129 | static void | |
130 | get_prop_window (dpyinfo) | |
131 | struct x_display_info *dpyinfo; | |
132 | { | |
133 | Display *dpy = dpyinfo->display; | |
134 | ||
135 | XGrabServer (dpy); | |
136 | dpyinfo->xsettings_window = XGetSelectionOwner (dpy, | |
137 | dpyinfo->Xatom_xsettings_sel); | |
138 | if (dpyinfo->xsettings_window != None) | |
139 | /* Select events so we can detect if window is deleted or if settings | |
140 | are changed. */ | |
141 | XSelectInput (dpy, dpyinfo->xsettings_window, | |
142 | PropertyChangeMask|StructureNotifyMask); | |
143 | ||
144 | XUngrabServer (dpy); | |
145 | } | |
146 | ||
3c055b77 JD |
147 | enum { |
148 | SEEN_AA = 0x01, | |
149 | SEEN_HINTING = 0x02, | |
150 | SEEN_RGBA = 0x04, | |
151 | SEEN_LCDFILTER = 0x08, | |
152 | SEEN_HINTSTYLE = 0x10, | |
153 | SEEN_DPI = 0x20, | |
154 | }; | |
637fa988 JD |
155 | struct xsettings |
156 | { | |
157 | FcBool aa, hinting; | |
158 | int rgba, lcdfilter, hintstyle; | |
159 | double dpi; | |
3c055b77 JD |
160 | |
161 | unsigned seen; | |
637fa988 JD |
162 | }; |
163 | ||
164 | #define SWAP32(nr) (((nr) << 24) | (((nr) << 8) & 0xff0000) \ | |
165 | | (((nr) >> 8) & 0xff00) | ((nr) >> 24)) | |
166 | #define SWAP16(nr) (((nr) << 8) | ((nr) >> 8)) | |
167 | #define PAD(nr) (((nr) + 3) & ~3) | |
168 | ||
169 | /* Parse xsettings and extract those that deal with Xft. | |
170 | See http://freedesktop.org/wiki/Specifications/XSettingsRegistry | |
171 | and http://standards.freedesktop.org/xsettings-spec/xsettings-spec-0.5.html. | |
172 | ||
173 | Layout of prop. First is a header: | |
174 | ||
175 | bytes type what | |
176 | ------------------------------------ | |
177 | 1 CARD8 byte-order | |
178 | 3 unused | |
179 | 4 CARD32 SERIAL | |
180 | 4 CARD32 N_SETTINGS | |
181 | ||
182 | Then N_SETTINGS records, with header: | |
183 | ||
184 | bytes type what | |
185 | ------------------------------------ | |
186 | 1 SETTING_TYPE type (0 = integer, 1 = string, 2 RGB color). | |
187 | 1 unused | |
188 | 2 CARD16 n == name-length | |
189 | n STRING8 name | |
190 | p unused, p=pad_to_even_4(n) | |
191 | 4 CARD32 last-change-serial | |
192 | ||
193 | and then the value, For string: | |
194 | ||
195 | bytes type what | |
196 | ------------------------------------ | |
197 | 4 CARD32 n = value-length | |
198 | n STRING8 value | |
199 | p unused, p=pad_to_even_4(n) | |
200 | ||
201 | For integer: | |
202 | ||
203 | bytes type what | |
204 | ------------------------------------ | |
205 | 4 INT32 value | |
206 | ||
207 | For RGB color: | |
208 | ||
209 | bytes type what | |
210 | ------------------------------------ | |
211 | 2 CARD16 red | |
212 | 2 CARD16 blue | |
213 | 2 CARD16 green | |
214 | 2 CARD16 alpha | |
215 | ||
3c055b77 | 216 | Returns non-zero if some Xft settings was seen, zero otherwise. |
637fa988 JD |
217 | */ |
218 | ||
219 | static int | |
220 | parse_xft_settings (prop, bytes, settings) | |
221 | unsigned char *prop; | |
222 | unsigned long bytes; | |
223 | struct xsettings *settings; | |
224 | { | |
225 | Lisp_Object byteorder = Fbyteorder (); | |
226 | int my_bo = XFASTINT (byteorder) == 'B' ? MSBFirst : LSBFirst; | |
227 | int that_bo = prop[0]; | |
228 | CARD32 n_settings; | |
229 | int bytes_parsed = 0; | |
230 | int settings_seen = 0; | |
231 | int i = 0; | |
232 | ||
233 | /* First 4 bytes is a serial number, skip that. */ | |
234 | ||
235 | if (bytes < 12) return BadLength; | |
236 | memcpy (&n_settings, prop+8, 4); | |
237 | if (my_bo != that_bo) n_settings = SWAP32 (n_settings); | |
238 | bytes_parsed = 12; | |
239 | ||
240 | memset (settings, 0, sizeof (*settings)); | |
241 | ||
99852628 | 242 | while (bytes_parsed+4 < bytes && settings_seen < 7 |
637fa988 JD |
243 | && i < n_settings) |
244 | { | |
245 | int type = prop[bytes_parsed++]; | |
246 | CARD16 nlen; | |
247 | CARD32 vlen, ival = 0; | |
248 | char name[128]; /* The names we are looking for are not this long. */ | |
249 | char sval[128]; /* The values we are looking for are not this long. */ | |
99852628 | 250 | int want_this; |
637fa988 JD |
251 | int to_cpy; |
252 | ||
253 | sval[0] = '\0'; | |
254 | ++i; | |
255 | ++bytes_parsed; /* Padding */ | |
256 | ||
257 | memcpy (&nlen, prop+bytes_parsed, 2); | |
258 | bytes_parsed += 2; | |
259 | if (my_bo != that_bo) nlen = SWAP16 (nlen); | |
260 | if (bytes_parsed+nlen > bytes) return BadLength; | |
261 | to_cpy = nlen > 127 ? 127 : nlen; | |
262 | memcpy (name, prop+bytes_parsed, to_cpy); | |
263 | name[to_cpy] = '\0'; | |
264 | ||
265 | bytes_parsed += nlen; | |
266 | bytes_parsed = PAD (bytes_parsed); | |
267 | ||
268 | bytes_parsed += 4; /* Skip serial for this value */ | |
269 | if (bytes_parsed > bytes) return BadLength; | |
270 | ||
99852628 JD |
271 | want_this = (nlen > 6 && strncmp (name, "Xft/", 4) == 0) |
272 | || (strcmp (XSETTINGS_FONT_NAME, name) == 0); | |
637fa988 JD |
273 | |
274 | switch (type) | |
275 | { | |
276 | case 0: /* Integer */ | |
277 | if (bytes_parsed+4 > bytes) return BadLength; | |
99852628 | 278 | if (want_this) |
637fa988 JD |
279 | { |
280 | memcpy (&ival, prop+bytes_parsed, 4); | |
281 | if (my_bo != that_bo) ival = SWAP32 (ival); | |
282 | } | |
283 | bytes_parsed += 4; | |
284 | break; | |
285 | ||
286 | case 1: /* String */ | |
287 | if (bytes_parsed+4 > bytes) return BadLength; | |
288 | memcpy (&vlen, prop+bytes_parsed, 4); | |
289 | bytes_parsed += 4; | |
290 | if (my_bo != that_bo) vlen = SWAP32 (vlen); | |
99852628 | 291 | if (want_this) |
637fa988 JD |
292 | { |
293 | to_cpy = vlen > 127 ? 127 : vlen; | |
294 | memcpy (sval, prop+bytes_parsed, to_cpy); | |
295 | sval[to_cpy] = '\0'; | |
296 | } | |
297 | bytes_parsed += vlen; | |
298 | bytes_parsed = PAD (bytes_parsed); | |
299 | break; | |
300 | ||
301 | case 2: /* RGB value */ | |
302 | /* No need to parse this */ | |
303 | if (bytes_parsed+8 > bytes) return BadLength; | |
304 | bytes_parsed += 8; /* 4 values (r, b, g, alpha), 2 bytes each. */ | |
305 | break; | |
306 | ||
307 | default: /* Parse Error */ | |
308 | return BadValue; | |
309 | } | |
310 | ||
99852628 | 311 | if (want_this) |
637fa988 JD |
312 | { |
313 | ++settings_seen; | |
314 | if (strcmp (name, "Xft/Antialias") == 0) | |
3c055b77 JD |
315 | { |
316 | settings->seen |= SEEN_AA; | |
317 | settings->aa = ival != 0; | |
318 | } | |
637fa988 | 319 | else if (strcmp (name, "Xft/Hinting") == 0) |
3c055b77 JD |
320 | { |
321 | settings->seen |= SEEN_HINTING; | |
322 | settings->hinting = ival != 0; | |
323 | } | |
637fa988 JD |
324 | else if (strcmp (name, "Xft/HintStyle") == 0) |
325 | { | |
3c055b77 | 326 | settings->seen |= SEEN_HINTSTYLE; |
637fa988 JD |
327 | if (strcmp (sval, "hintnone") == 0) |
328 | settings->hintstyle = FC_HINT_NONE; | |
329 | else if (strcmp (sval, "hintslight") == 0) | |
330 | settings->hintstyle = FC_HINT_SLIGHT; | |
331 | else if (strcmp (sval, "hintmedium") == 0) | |
332 | settings->hintstyle = FC_HINT_MEDIUM; | |
333 | else if (strcmp (sval, "hintfull") == 0) | |
334 | settings->hintstyle = FC_HINT_FULL; | |
3c055b77 JD |
335 | else |
336 | settings->seen &= ~SEEN_HINTSTYLE; | |
637fa988 JD |
337 | } |
338 | else if (strcmp (name, "Xft/RGBA") == 0) | |
339 | { | |
3c055b77 | 340 | settings->seen |= SEEN_RGBA; |
637fa988 JD |
341 | if (strcmp (sval, "none") == 0) |
342 | settings->rgba = FC_RGBA_NONE; | |
343 | else if (strcmp (sval, "rgb") == 0) | |
344 | settings->rgba = FC_RGBA_RGB; | |
345 | else if (strcmp (sval, "bgr") == 0) | |
346 | settings->rgba = FC_RGBA_BGR; | |
347 | else if (strcmp (sval, "vrgb") == 0) | |
348 | settings->rgba = FC_RGBA_VRGB; | |
349 | else if (strcmp (sval, "vbgr") == 0) | |
350 | settings->rgba = FC_RGBA_VBGR; | |
3c055b77 JD |
351 | else |
352 | settings->seen &= ~SEEN_RGBA; | |
637fa988 JD |
353 | } |
354 | else if (strcmp (name, "Xft/DPI") == 0) | |
3c055b77 JD |
355 | { |
356 | settings->seen |= SEEN_DPI; | |
357 | settings->dpi = (double)ival/1024.0; | |
358 | } | |
637fa988 JD |
359 | else if (strcmp (name, "Xft/lcdfilter") == 0) |
360 | { | |
3c055b77 | 361 | settings->seen |= SEEN_LCDFILTER; |
637fa988 JD |
362 | if (strcmp (sval, "none") == 0) |
363 | settings->lcdfilter = FC_LCD_NONE; | |
364 | else if (strcmp (sval, "lcddefault") == 0) | |
365 | settings->lcdfilter = FC_LCD_DEFAULT; | |
3c055b77 JD |
366 | else |
367 | settings->seen &= ~SEEN_LCDFILTER; | |
637fa988 | 368 | } |
99852628 JD |
369 | else if (strcmp (name, XSETTINGS_FONT_NAME) == 0) |
370 | { | |
371 | free (current_font); | |
372 | current_font = xstrdup (sval); | |
373 | } | |
637fa988 JD |
374 | } |
375 | } | |
376 | ||
3c055b77 | 377 | return settings_seen; |
637fa988 JD |
378 | } |
379 | ||
380 | static int | |
381 | read_xft_settings (dpyinfo, settings) | |
382 | struct x_display_info *dpyinfo; | |
383 | struct xsettings *settings; | |
384 | { | |
385 | long long_len; | |
386 | Atom act_type; | |
387 | int act_form; | |
388 | unsigned long nitems, bytes_after; | |
389 | unsigned char *prop = NULL; | |
390 | Display *dpy = dpyinfo->display; | |
391 | int rc; | |
392 | ||
393 | x_catch_errors (dpy); | |
394 | rc = XGetWindowProperty (dpy, | |
395 | dpyinfo->xsettings_window, | |
396 | dpyinfo->Xatom_xsettings_prop, | |
397 | 0, LONG_MAX, False, AnyPropertyType, | |
398 | &act_type, &act_form, &nitems, &bytes_after, | |
399 | &prop); | |
400 | ||
401 | if (rc == Success && prop != NULL && act_form == 8 && nitems > 0 | |
402 | && act_type == dpyinfo->Xatom_xsettings_prop) | |
403 | rc = parse_xft_settings (prop, nitems, settings); | |
404 | ||
405 | XFree (prop); | |
406 | ||
407 | x_uncatch_errors (); | |
408 | ||
3c055b77 | 409 | return rc != 0; |
637fa988 JD |
410 | } |
411 | ||
581e51e8 | 412 | |
637fa988 JD |
413 | static void |
414 | apply_xft_settings (dpyinfo, send_event_p) | |
415 | struct x_display_info *dpyinfo; | |
416 | int send_event_p; | |
417 | { | |
418 | FcPattern *pat; | |
419 | struct xsettings settings, oldsettings; | |
420 | int changed = 0; | |
67477f30 | 421 | char buf[256]; |
637fa988 JD |
422 | |
423 | if (!read_xft_settings (dpyinfo, &settings)) | |
424 | return; | |
425 | ||
426 | memset (&oldsettings, 0, sizeof (oldsettings)); | |
67477f30 | 427 | buf[0] = '\0'; |
637fa988 JD |
428 | pat = FcPatternCreate (); |
429 | XftDefaultSubstitute (dpyinfo->display, | |
430 | XScreenNumberOfScreen (dpyinfo->screen), | |
431 | pat); | |
432 | FcPatternGetBool (pat, FC_ANTIALIAS, 0, &oldsettings.aa); | |
433 | FcPatternGetBool (pat, FC_HINTING, 0, &oldsettings.hinting); | |
434 | FcPatternGetInteger (pat, FC_HINT_STYLE, 0, &oldsettings.hintstyle); | |
435 | FcPatternGetInteger (pat, FC_LCD_FILTER, 0, &oldsettings.lcdfilter); | |
436 | FcPatternGetInteger (pat, FC_RGBA, 0, &oldsettings.rgba); | |
437 | FcPatternGetDouble (pat, FC_DPI, 0, &oldsettings.dpi); | |
438 | ||
3c055b77 | 439 | if ((settings.seen & SEEN_AA) != 0 && oldsettings.aa != settings.aa) |
637fa988 JD |
440 | { |
441 | FcPatternDel (pat, FC_ANTIALIAS); | |
442 | FcPatternAddBool (pat, FC_ANTIALIAS, settings.aa); | |
443 | ++changed; | |
67477f30 | 444 | oldsettings.aa = settings.aa; |
637fa988 | 445 | } |
67477f30 JD |
446 | sprintf (buf, "Antialias: %d", oldsettings.aa); |
447 | ||
3c055b77 JD |
448 | if ((settings.seen & SEEN_HINTING) != 0 |
449 | && oldsettings.hinting != settings.hinting) | |
637fa988 JD |
450 | { |
451 | FcPatternDel (pat, FC_HINTING); | |
452 | FcPatternAddBool (pat, FC_HINTING, settings.hinting); | |
453 | ++changed; | |
67477f30 | 454 | oldsettings.hinting = settings.hinting; |
637fa988 | 455 | } |
67477f30 JD |
456 | if (strlen (buf) > 0) strcat (buf, ", "); |
457 | sprintf (buf+strlen (buf), "Hinting: %d", oldsettings.hinting); | |
3c055b77 | 458 | if ((settings.seen & SEEN_RGBA) != 0 && oldsettings.rgba != settings.rgba) |
637fa988 JD |
459 | { |
460 | FcPatternDel (pat, FC_RGBA); | |
461 | FcPatternAddInteger (pat, FC_RGBA, settings.rgba); | |
67477f30 | 462 | oldsettings.rgba = settings.rgba; |
637fa988 JD |
463 | ++changed; |
464 | } | |
67477f30 JD |
465 | if (strlen (buf) > 0) strcat (buf, ", "); |
466 | sprintf (buf+strlen (buf), "RGBA: %d", oldsettings.rgba); | |
467 | ||
a6eb20d8 | 468 | /* Older fontconfig versions don't have FC_LCD_FILTER. */ |
3c055b77 JD |
469 | if ((settings.seen & SEEN_LCDFILTER) != 0 |
470 | && oldsettings.lcdfilter != settings.lcdfilter) | |
637fa988 JD |
471 | { |
472 | FcPatternDel (pat, FC_LCD_FILTER); | |
473 | FcPatternAddInteger (pat, FC_LCD_FILTER, settings.lcdfilter); | |
474 | ++changed; | |
67477f30 | 475 | oldsettings.lcdfilter = settings.lcdfilter; |
637fa988 | 476 | } |
67477f30 JD |
477 | if (strlen (buf) > 0) strcat (buf, ", "); |
478 | sprintf (buf+strlen (buf), "LCDFilter: %d", oldsettings.lcdfilter); | |
479 | ||
3c055b77 JD |
480 | if ((settings.seen & SEEN_HINTSTYLE) != 0 |
481 | && oldsettings.hintstyle != settings.hintstyle) | |
637fa988 JD |
482 | { |
483 | FcPatternDel (pat, FC_HINT_STYLE); | |
484 | FcPatternAddInteger (pat, FC_HINT_STYLE, settings.hintstyle); | |
485 | ++changed; | |
67477f30 | 486 | oldsettings.hintstyle = settings.hintstyle; |
637fa988 | 487 | } |
67477f30 JD |
488 | if (strlen (buf) > 0) strcat (buf, ", "); |
489 | sprintf (buf+strlen (buf), "Hintstyle: %d", oldsettings.hintstyle); | |
490 | ||
3c055b77 JD |
491 | if ((settings.seen & SEEN_DPI) != 0 && oldsettings.dpi != settings.dpi |
492 | && settings.dpi > 0) | |
637fa988 JD |
493 | { |
494 | Lisp_Object frame, tail; | |
495 | ||
496 | FcPatternDel (pat, FC_DPI); | |
497 | FcPatternAddDouble (pat, FC_DPI, settings.dpi); | |
498 | ++changed; | |
67477f30 JD |
499 | oldsettings.dpi = settings.dpi; |
500 | ||
637fa988 JD |
501 | /* Change the DPI on this display and all frames on the display. */ |
502 | dpyinfo->resy = dpyinfo->resx = settings.dpi; | |
503 | FOR_EACH_FRAME (tail, frame) | |
504 | if (FRAME_X_P (XFRAME (frame)) | |
505 | && FRAME_X_DISPLAY_INFO (XFRAME (frame)) == dpyinfo) | |
506 | XFRAME (frame)->resy = XFRAME (frame)->resx = settings.dpi; | |
507 | } | |
508 | ||
67477f30 JD |
509 | if (strlen (buf) > 0) strcat (buf, ", "); |
510 | sprintf (buf+strlen (buf), "DPI: %lf", oldsettings.dpi); | |
511 | ||
637fa988 JD |
512 | if (changed) |
513 | { | |
514 | XftDefaultSet (dpyinfo->display, pat); | |
515 | if (send_event_p) | |
516 | store_font_changed_event (Qfont_render, | |
517 | XCAR (dpyinfo->name_list_element)); | |
67477f30 | 518 | Vxft_settings = make_string (buf, strlen (buf)); |
637fa988 JD |
519 | } |
520 | else | |
521 | FcPatternDestroy (pat); | |
522 | } | |
523 | ||
524 | #endif /* HAVE_XFT */ | |
525 | ||
526 | void | |
527 | xft_settings_event (dpyinfo, event) | |
528 | struct x_display_info *dpyinfo; | |
529 | XEvent *event; | |
530 | { | |
531 | #ifdef HAVE_XFT | |
532 | int check_window_p = 0; | |
533 | ||
534 | switch (event->type) | |
535 | { | |
536 | case DestroyNotify: | |
537 | if (dpyinfo->xsettings_window == event->xany.window) | |
538 | check_window_p = 1; | |
539 | break; | |
540 | ||
541 | case ClientMessage: | |
542 | if (event->xclient.message_type == dpyinfo->Xatom_xsettings_mgr | |
543 | && event->xclient.data.l[1] == dpyinfo->Xatom_xsettings_sel | |
544 | && event->xclient.window == dpyinfo->root_window) | |
545 | check_window_p = 1; | |
546 | break; | |
547 | ||
548 | case PropertyNotify: | |
549 | if (event->xproperty.window == dpyinfo->xsettings_window | |
550 | && event->xproperty.state == PropertyNewValue | |
551 | && event->xproperty.atom == dpyinfo->Xatom_xsettings_prop) | |
552 | { | |
553 | apply_xft_settings (dpyinfo, True); | |
554 | } | |
555 | break; | |
556 | } | |
557 | ||
558 | if (check_window_p) | |
559 | { | |
560 | dpyinfo->xsettings_window = None; | |
561 | get_prop_window (dpyinfo); | |
562 | if (dpyinfo->xsettings_window != None) | |
563 | apply_xft_settings (dpyinfo, True); | |
564 | } | |
565 | #endif /* HAVE_XFT */ | |
566 | } | |
567 | ||
568 | ||
569 | static void | |
570 | init_gconf () | |
571 | { | |
0d1d0d26 | 572 | #if defined (HAVE_GCONF) && defined (HAVE_XFT) |
637fa988 JD |
573 | int i; |
574 | char *s; | |
637fa988 JD |
575 | |
576 | g_type_init (); | |
577 | gconf_client = gconf_client_get_default (); | |
578 | s = gconf_client_get_string (gconf_client, SYSTEM_MONO_FONT, NULL); | |
579 | if (s) | |
580 | { | |
581 | current_mono_font = xstrdup (s); | |
582 | g_free (s); | |
583 | } | |
99852628 JD |
584 | s = gconf_client_get_string (gconf_client, SYSTEM_FONT, NULL); |
585 | if (s) | |
586 | { | |
587 | current_font = xstrdup (s); | |
588 | g_free (s); | |
589 | } | |
637fa988 JD |
590 | gconf_client_set_error_handling (gconf_client, GCONF_CLIENT_HANDLE_NONE); |
591 | gconf_client_add_dir (gconf_client, | |
592 | SYSTEM_MONO_FONT, | |
593 | GCONF_CLIENT_PRELOAD_ONELEVEL, | |
594 | NULL); | |
595 | gconf_client_notify_add (gconf_client, | |
596 | SYSTEM_MONO_FONT, | |
597 | something_changedCB, | |
598 | NULL, NULL, NULL); | |
0d1d0d26 | 599 | #endif /* HAVE_GCONF && HAVE_XFT */ |
637fa988 JD |
600 | } |
601 | ||
602 | static void | |
603 | init_xfd_settings (dpyinfo) | |
604 | struct x_display_info *dpyinfo; | |
605 | { | |
606 | #ifdef HAVE_XFT | |
607 | char sel[64]; | |
608 | Display *dpy = dpyinfo->display; | |
609 | ||
610 | BLOCK_INPUT; | |
611 | ||
612 | sprintf (sel, "_XSETTINGS_S%d", XScreenNumberOfScreen (dpyinfo->screen)); | |
613 | dpyinfo->Xatom_xsettings_sel = XInternAtom (dpy, sel, False); | |
614 | dpyinfo->Xatom_xsettings_prop = XInternAtom (dpy, | |
615 | "_XSETTINGS_SETTINGS", | |
616 | False); | |
617 | dpyinfo->Xatom_xsettings_mgr = XInternAtom (dpy, "MANAGER", False); | |
618 | ||
619 | /* Select events so we can detect client messages sent when selection | |
620 | owner changes. */ | |
621 | XSelectInput (dpy, dpyinfo->root_window, StructureNotifyMask); | |
622 | ||
623 | get_prop_window (dpyinfo); | |
624 | if (dpyinfo->xsettings_window != None) | |
625 | apply_xft_settings (dpyinfo, False); | |
626 | ||
627 | UNBLOCK_INPUT; | |
628 | ||
629 | #else /* ! HAVE_XFT */ | |
630 | ||
631 | dpyinfo->Xatom_xsettings_sel = None; | |
632 | dpyinfo->Xatom_xsettings_prop = None; | |
633 | dpyinfo->Xatom_xsettings_mgr = None; | |
634 | dpyinfo->xsettings_window = None; | |
635 | ||
636 | #endif /* ! HAVE_XFT */ | |
637 | } | |
638 | ||
639 | void | |
640 | xsettings_initialize (dpyinfo) | |
641 | struct x_display_info *dpyinfo; | |
642 | { | |
643 | if (first_dpyinfo == NULL) first_dpyinfo = dpyinfo; | |
644 | init_gconf (); | |
645 | init_xfd_settings (dpyinfo); | |
646 | } | |
647 | ||
0d1d0d26 JD |
648 | const char * |
649 | xsettings_get_system_font () | |
650 | { | |
651 | return current_mono_font; | |
652 | } | |
637fa988 | 653 | |
99852628 JD |
654 | const char * |
655 | xsettings_get_system_normal_font () | |
656 | { | |
657 | return current_font; | |
658 | } | |
659 | ||
660 | DEFUN ("font-get-system-normal-font", Ffont_get_system_normal_font, | |
661 | Sfont_get_system_normal_font, | |
662 | 0, 0, 0, | |
663 | doc: /* Get the system default font. */) | |
664 | () | |
665 | { | |
666 | return current_font && use_system_font | |
667 | ? make_string (current_font, strlen (current_font)) | |
668 | : Qnil; | |
669 | } | |
670 | ||
637fa988 JD |
671 | DEFUN ("font-get-system-font", Ffont_get_system_font, Sfont_get_system_font, |
672 | 0, 0, 0, | |
673 | doc: /* Get the system default monospaced font. */) | |
674 | () | |
675 | { | |
dfb3c4c6 | 676 | return current_mono_font && use_system_font |
637fa988 JD |
677 | ? make_string (current_mono_font, strlen (current_mono_font)) |
678 | : Qnil; | |
679 | } | |
680 | ||
681 | void | |
682 | syms_of_xsettings () | |
683 | { | |
684 | current_mono_font = NULL; | |
99852628 | 685 | current_font = NULL; |
637fa988 JD |
686 | first_dpyinfo = NULL; |
687 | #ifdef HAVE_GCONF | |
688 | gconf_client = NULL; | |
689 | #endif | |
690 | ||
691 | Qfont_name = intern_c_string ("font-name"); | |
692 | staticpro (&Qfont_name); | |
693 | Qfont_render = intern_c_string ("font-render"); | |
694 | staticpro (&Qfont_render); | |
695 | defsubr (&Sfont_get_system_font); | |
99852628 | 696 | defsubr (&Sfont_get_system_normal_font); |
637fa988 | 697 | |
dfb3c4c6 JD |
698 | DEFVAR_BOOL ("font-use-system-font", &use_system_font, |
699 | doc: /* *Non-nil means to use the system defined font. */); | |
700 | use_system_font = 0; | |
701 | ||
67477f30 JD |
702 | DEFVAR_LISP ("xft-settings", &Vxft_settings, |
703 | doc: /* Font settings applied to Xft. */); | |
704 | Vxft_settings = make_string ("", 0); | |
705 | ||
0d1d0d26 JD |
706 | #ifdef HAVE_XFT |
707 | Fprovide (intern_c_string ("font-render-setting"), Qnil); | |
637fa988 JD |
708 | #ifdef HAVE_GCONF |
709 | Fprovide (intern_c_string ("system-font-setting"), Qnil); | |
710 | #endif | |
637fa988 JD |
711 | #endif |
712 | } | |
964f5b2b MB |
713 | |
714 | /* arch-tag: 541716ed-2e6b-42e1-8212-3197e01ea61d | |
715 | (do not change this comment) */ |