| 1 | /* Functions for handle font changes dynamically. |
| 2 | Copyright (C) 2009, 2010 |
| 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 "keyboard.h" |
| 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 char *current_font; |
| 43 | static struct x_display_info *first_dpyinfo; |
| 44 | static Lisp_Object Qfont_name, Qfont_render; |
| 45 | static int use_system_font; |
| 46 | static Lisp_Object Vxft_settings; |
| 47 | |
| 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 | |
| 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" |
| 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) |
| 91 | return; /* No change. */ |
| 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 | |
| 106 | if (found && use_system_font) |
| 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 | |
| 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 | |
| 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 | |
| 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 | }; |
| 154 | struct xsettings |
| 155 | { |
| 156 | FcBool aa, hinting; |
| 157 | int rgba, lcdfilter, hintstyle; |
| 158 | double dpi; |
| 159 | |
| 160 | unsigned seen; |
| 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 | |
| 215 | Returns non-zero if some Xft settings was seen, zero otherwise. |
| 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 | |
| 241 | while (bytes_parsed+4 < bytes && settings_seen < 7 |
| 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. */ |
| 249 | int want_this; |
| 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 | |
| 270 | want_this = (nlen > 6 && strncmp (name, "Xft/", 4) == 0) |
| 271 | || (strcmp (XSETTINGS_FONT_NAME, name) == 0); |
| 272 | |
| 273 | switch (type) |
| 274 | { |
| 275 | case 0: /* Integer */ |
| 276 | if (bytes_parsed+4 > bytes) return BadLength; |
| 277 | if (want_this) |
| 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); |
| 290 | if (want_this) |
| 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 | |
| 310 | if (want_this) |
| 311 | { |
| 312 | ++settings_seen; |
| 313 | if (strcmp (name, "Xft/Antialias") == 0) |
| 314 | { |
| 315 | settings->seen |= SEEN_AA; |
| 316 | settings->aa = ival != 0; |
| 317 | } |
| 318 | else if (strcmp (name, "Xft/Hinting") == 0) |
| 319 | { |
| 320 | settings->seen |= SEEN_HINTING; |
| 321 | settings->hinting = ival != 0; |
| 322 | } |
| 323 | else if (strcmp (name, "Xft/HintStyle") == 0) |
| 324 | { |
| 325 | settings->seen |= SEEN_HINTSTYLE; |
| 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; |
| 334 | else |
| 335 | settings->seen &= ~SEEN_HINTSTYLE; |
| 336 | } |
| 337 | else if (strcmp (name, "Xft/RGBA") == 0) |
| 338 | { |
| 339 | settings->seen |= SEEN_RGBA; |
| 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; |
| 350 | else |
| 351 | settings->seen &= ~SEEN_RGBA; |
| 352 | } |
| 353 | else if (strcmp (name, "Xft/DPI") == 0) |
| 354 | { |
| 355 | settings->seen |= SEEN_DPI; |
| 356 | settings->dpi = (double)ival/1024.0; |
| 357 | } |
| 358 | else if (strcmp (name, "Xft/lcdfilter") == 0) |
| 359 | { |
| 360 | settings->seen |= SEEN_LCDFILTER; |
| 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; |
| 365 | else |
| 366 | settings->seen &= ~SEEN_LCDFILTER; |
| 367 | } |
| 368 | else if (strcmp (name, XSETTINGS_FONT_NAME) == 0) |
| 369 | { |
| 370 | free (current_font); |
| 371 | current_font = xstrdup (sval); |
| 372 | } |
| 373 | } |
| 374 | } |
| 375 | |
| 376 | return settings_seen; |
| 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 | |
| 408 | return rc != 0; |
| 409 | } |
| 410 | |
| 411 | |
| 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; |
| 420 | char buf[256]; |
| 421 | |
| 422 | if (!read_xft_settings (dpyinfo, &settings)) |
| 423 | return; |
| 424 | |
| 425 | memset (&oldsettings, 0, sizeof (oldsettings)); |
| 426 | buf[0] = '\0'; |
| 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 | |
| 438 | if ((settings.seen & SEEN_AA) != 0 && oldsettings.aa != settings.aa) |
| 439 | { |
| 440 | FcPatternDel (pat, FC_ANTIALIAS); |
| 441 | FcPatternAddBool (pat, FC_ANTIALIAS, settings.aa); |
| 442 | ++changed; |
| 443 | oldsettings.aa = settings.aa; |
| 444 | } |
| 445 | sprintf (buf, "Antialias: %d", oldsettings.aa); |
| 446 | |
| 447 | if ((settings.seen & SEEN_HINTING) != 0 |
| 448 | && oldsettings.hinting != settings.hinting) |
| 449 | { |
| 450 | FcPatternDel (pat, FC_HINTING); |
| 451 | FcPatternAddBool (pat, FC_HINTING, settings.hinting); |
| 452 | ++changed; |
| 453 | oldsettings.hinting = settings.hinting; |
| 454 | } |
| 455 | if (strlen (buf) > 0) strcat (buf, ", "); |
| 456 | sprintf (buf+strlen (buf), "Hinting: %d", oldsettings.hinting); |
| 457 | if ((settings.seen & SEEN_RGBA) != 0 && oldsettings.rgba != settings.rgba) |
| 458 | { |
| 459 | FcPatternDel (pat, FC_RGBA); |
| 460 | FcPatternAddInteger (pat, FC_RGBA, settings.rgba); |
| 461 | oldsettings.rgba = settings.rgba; |
| 462 | ++changed; |
| 463 | } |
| 464 | if (strlen (buf) > 0) strcat (buf, ", "); |
| 465 | sprintf (buf+strlen (buf), "RGBA: %d", oldsettings.rgba); |
| 466 | |
| 467 | /* Older fontconfig versions don't have FC_LCD_FILTER. */ |
| 468 | if ((settings.seen & SEEN_LCDFILTER) != 0 |
| 469 | && oldsettings.lcdfilter != settings.lcdfilter) |
| 470 | { |
| 471 | FcPatternDel (pat, FC_LCD_FILTER); |
| 472 | FcPatternAddInteger (pat, FC_LCD_FILTER, settings.lcdfilter); |
| 473 | ++changed; |
| 474 | oldsettings.lcdfilter = settings.lcdfilter; |
| 475 | } |
| 476 | if (strlen (buf) > 0) strcat (buf, ", "); |
| 477 | sprintf (buf+strlen (buf), "LCDFilter: %d", oldsettings.lcdfilter); |
| 478 | |
| 479 | if ((settings.seen & SEEN_HINTSTYLE) != 0 |
| 480 | && oldsettings.hintstyle != settings.hintstyle) |
| 481 | { |
| 482 | FcPatternDel (pat, FC_HINT_STYLE); |
| 483 | FcPatternAddInteger (pat, FC_HINT_STYLE, settings.hintstyle); |
| 484 | ++changed; |
| 485 | oldsettings.hintstyle = settings.hintstyle; |
| 486 | } |
| 487 | if (strlen (buf) > 0) strcat (buf, ", "); |
| 488 | sprintf (buf+strlen (buf), "Hintstyle: %d", oldsettings.hintstyle); |
| 489 | |
| 490 | if ((settings.seen & SEEN_DPI) != 0 && oldsettings.dpi != settings.dpi |
| 491 | && settings.dpi > 0) |
| 492 | { |
| 493 | Lisp_Object frame, tail; |
| 494 | |
| 495 | FcPatternDel (pat, FC_DPI); |
| 496 | FcPatternAddDouble (pat, FC_DPI, settings.dpi); |
| 497 | ++changed; |
| 498 | oldsettings.dpi = settings.dpi; |
| 499 | |
| 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 | |
| 508 | if (strlen (buf) > 0) strcat (buf, ", "); |
| 509 | sprintf (buf+strlen (buf), "DPI: %lf", oldsettings.dpi); |
| 510 | |
| 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)); |
| 517 | Vxft_settings = make_string (buf, strlen (buf)); |
| 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 | { |
| 571 | #if defined (HAVE_GCONF) && defined (HAVE_XFT) |
| 572 | int i; |
| 573 | char *s; |
| 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 | } |
| 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 | } |
| 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); |
| 598 | #endif /* HAVE_GCONF && HAVE_XFT */ |
| 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 | |
| 647 | const char * |
| 648 | xsettings_get_system_font () |
| 649 | { |
| 650 | return current_mono_font; |
| 651 | } |
| 652 | |
| 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 | |
| 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 | { |
| 675 | return current_mono_font && use_system_font |
| 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; |
| 684 | current_font = NULL; |
| 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); |
| 695 | defsubr (&Sfont_get_system_normal_font); |
| 696 | |
| 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 | |
| 701 | DEFVAR_LISP ("xft-settings", &Vxft_settings, |
| 702 | doc: /* Font settings applied to Xft. */); |
| 703 | Vxft_settings = make_string ("", 0); |
| 704 | |
| 705 | #ifdef HAVE_XFT |
| 706 | Fprovide (intern_c_string ("font-render-setting"), Qnil); |
| 707 | #ifdef HAVE_GCONF |
| 708 | Fprovide (intern_c_string ("system-font-setting"), Qnil); |
| 709 | #endif |
| 710 | #endif |
| 711 | } |
| 712 | |
| 713 | /* arch-tag: 541716ed-2e6b-42e1-8212-3197e01ea61d |
| 714 | (do not change this comment) */ |