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