/* Functions for handling font and other changes dynamically. Copyright (C) 2009-2021 Free Software Foundation, Inc. This file is part of GNU Emacs. GNU Emacs is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. GNU Emacs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Emacs. If not, see . */ #include #include #include #include #include #include "lisp.h" #include "xterm.h" #include "xsettings.h" #include "frame.h" #include "keyboard.h" #include "blockinput.h" #include "termhooks.h" #include "pdumper.h" #include #ifdef HAVE_GSETTINGS #include #include #endif #ifdef HAVE_GCONF #include #endif #if defined USE_CAIRO || defined HAVE_XFT #ifdef USE_CAIRO #include #else /* HAVE_XFT */ #include #endif #endif static char *current_mono_font; static char *current_font; static struct x_display_info *first_dpyinfo; static Lisp_Object current_tool_bar_style; /* Store a config changed event in to the event queue. */ static void store_config_changed_event (Lisp_Object arg, Lisp_Object display_name) { struct input_event event; EVENT_INIT (event); event.kind = CONFIG_CHANGED_EVENT; event.frame_or_window = display_name; event.arg = arg; kbd_buffer_store_event (&event); } /* Return true if DPYINFO is still valid. */ static bool dpyinfo_valid (struct x_display_info *dpyinfo) { bool found = false; if (dpyinfo != NULL) { struct x_display_info *d; for (d = x_display_list; !found && d; d = d->next) found = d == dpyinfo && d->display == dpyinfo->display; } return found; } /* Store a monospace font change event if the monospaced font changed. */ #if (defined USE_CAIRO || defined HAVE_XFT) && (defined HAVE_GSETTINGS || defined HAVE_GCONF) static void store_monospaced_changed (const char *newfont) { if (current_mono_font != NULL && strcmp (newfont, current_mono_font) == 0) return; /* No change. */ dupstring (¤t_mono_font, newfont); if (dpyinfo_valid (first_dpyinfo) && use_system_font) { store_config_changed_event (Qmonospace_font_name, XCAR (first_dpyinfo->name_list_element)); } } #endif /* Store a font name change event if the font name changed. */ #if defined USE_CAIRO || defined HAVE_XFT static void store_font_name_changed (const char *newfont) { if (current_font != NULL && strcmp (newfont, current_font) == 0) return; /* No change. */ dupstring (¤t_font, newfont); if (dpyinfo_valid (first_dpyinfo)) { store_config_changed_event (Qfont_name, XCAR (first_dpyinfo->name_list_element)); } } #endif /* USE_CAIRO || HAVE_XFT */ /* Map TOOL_BAR_STYLE from a string to its corresponding Lisp value. Return Qnil if TOOL_BAR_STYLE is not known. */ static Lisp_Object map_tool_bar_style (const char *tool_bar_style) { Lisp_Object style = Qnil; if (tool_bar_style) { if (strcmp (tool_bar_style, "both") == 0) style = Qboth; else if (strcmp (tool_bar_style, "both-horiz") == 0) style = Qboth_horiz; else if (strcmp (tool_bar_style, "icons") == 0) style = Qimage; else if (strcmp (tool_bar_style, "text") == 0) style = Qtext; } return style; } /* Store a tool bar style change event if the tool bar style changed. */ static void store_tool_bar_style_changed (const char *newstyle, struct x_display_info *dpyinfo) { Lisp_Object style = map_tool_bar_style (newstyle); if (EQ (current_tool_bar_style, style)) return; /* No change. */ current_tool_bar_style = style; if (dpyinfo_valid (dpyinfo)) store_config_changed_event (Qtool_bar_style, XCAR (dpyinfo->name_list_element)); } #if defined USE_CAIRO || defined HAVE_XFT #define XSETTINGS_FONT_NAME "Gtk/FontName" #endif #define XSETTINGS_TOOL_BAR_STYLE "Gtk/ToolbarStyle" enum { SEEN_AA = 0x01, SEEN_HINTING = 0x02, SEEN_RGBA = 0x04, SEEN_LCDFILTER = 0x08, SEEN_HINTSTYLE = 0x10, SEEN_DPI = 0x20, SEEN_FONT = 0x40, SEEN_TB_STYLE = 0x80 }; struct xsettings { #if defined USE_CAIRO || defined HAVE_XFT FcBool aa, hinting; int rgba, lcdfilter, hintstyle; double dpi; char *font; #endif char *tb_style; unsigned seen; }; #ifdef HAVE_GSETTINGS #define GSETTINGS_SCHEMA "org.gnome.desktop.interface" #define GSETTINGS_TOOL_BAR_STYLE "toolbar-style" #if defined USE_CAIRO || defined HAVE_XFT #define GSETTINGS_MONO_FONT "monospace-font-name" #define GSETTINGS_FONT_NAME "font-name" #endif /* The single GSettings instance, or NULL if not connected to GSettings. */ static GSettings *gsettings_client; /* Callback called when something changed in GSettings. */ static void something_changed_gsettingsCB (GSettings *settings, gchar *key, gpointer user_data) { GVariant *val; if (strcmp (key, GSETTINGS_TOOL_BAR_STYLE) == 0) { val = g_settings_get_value (settings, GSETTINGS_TOOL_BAR_STYLE); if (val) { g_variant_ref_sink (val); if (g_variant_is_of_type (val, G_VARIANT_TYPE_STRING)) { const gchar *newstyle = g_variant_get_string (val, NULL); store_tool_bar_style_changed (newstyle, first_dpyinfo); } g_variant_unref (val); } } #if defined USE_CAIRO || defined HAVE_XFT else if (strcmp (key, GSETTINGS_MONO_FONT) == 0) { val = g_settings_get_value (settings, GSETTINGS_MONO_FONT); if (val) { g_variant_ref_sink (val); if (g_variant_is_of_type (val, G_VARIANT_TYPE_STRING)) { const gchar *newfont = g_variant_get_string (val, NULL); store_monospaced_changed (newfont); } g_variant_unref (val); } } else if (strcmp (key, GSETTINGS_FONT_NAME) == 0) { val = g_settings_get_value (settings, GSETTINGS_FONT_NAME); if (val) { g_variant_ref_sink (val); if (g_variant_is_of_type (val, G_VARIANT_TYPE_STRING)) { const gchar *newfont = g_variant_get_string (val, NULL); store_font_name_changed (newfont); } g_variant_unref (val); } } #endif /* USE_CAIRO || HAVE_XFT */ } #endif /* HAVE_GSETTINGS */ #ifdef HAVE_GCONF #define GCONF_TOOL_BAR_STYLE "/desktop/gnome/interface/toolbar_style" #if defined USE_CAIRO || defined HAVE_XFT #define GCONF_MONO_FONT "/desktop/gnome/interface/monospace_font_name" #define GCONF_FONT_NAME "/desktop/gnome/interface/font_name" #endif /* The single GConf instance, or NULL if not connected to GConf. */ static GConfClient *gconf_client; /* Callback called when something changed in GConf that we care about. */ static void something_changed_gconfCB (GConfClient *client, guint cnxn_id, GConfEntry *entry, gpointer user_data) { GConfValue *v = gconf_entry_get_value (entry); const char *key = gconf_entry_get_key (entry); if (!v || v->type != GCONF_VALUE_STRING || ! key) return; if (strcmp (key, GCONF_TOOL_BAR_STYLE) == 0) { const char *value = gconf_value_get_string (v); store_tool_bar_style_changed (value, first_dpyinfo); } #if defined USE_CAIRO || defined HAVE_XFT else if (strcmp (key, GCONF_MONO_FONT) == 0) { const char *value = gconf_value_get_string (v); store_monospaced_changed (value); } else if (strcmp (key, GCONF_FONT_NAME) == 0) { const char *value = gconf_value_get_string (v); store_font_name_changed (value); } #endif /* USE_CAIRO || HAVE_XFT */ } #endif /* HAVE_GCONF */ #if defined USE_CAIRO || defined HAVE_XFT /* Older fontconfig versions don't have FC_LCD_*. */ #ifndef FC_LCD_NONE #define FC_LCD_NONE 0 #endif #ifndef FC_LCD_DEFAULT #define FC_LCD_DEFAULT 1 #endif #ifndef FC_LCD_FILTER #define FC_LCD_FILTER "lcdfilter" #endif #endif /* USE_CAIRO || HAVE_XFT */ /* Find the window that contains the XSETTINGS property values. */ static void get_prop_window (struct x_display_info *dpyinfo) { Display *dpy = dpyinfo->display; XGrabServer (dpy); dpyinfo->xsettings_window = XGetSelectionOwner (dpy, dpyinfo->Xatom_xsettings_sel); if (dpyinfo->xsettings_window != None) /* Select events so we can detect if window is deleted or if settings are changed. */ XSelectInput (dpy, dpyinfo->xsettings_window, PropertyChangeMask|StructureNotifyMask); XUngrabServer (dpy); } #define PAD(nr) (((nr) + 3) & ~3) /* Parse xsettings and extract those that deal with Xft. See https://freedesktop.org/wiki/Specifications/XSettingsRegistry/ and https://specifications.freedesktop.org/xsettings-spec/xsettings-spec-0.5.html. Layout of prop. First is a header: bytes type what ------------------------------------ 1 CARD8 byte-order 3 unused 4 CARD32 SERIAL 4 CARD32 N_SETTINGS Then N_SETTINGS records, with header: bytes type what ------------------------------------ 1 SETTING_TYPE type (0 = integer, 1 = string, 2 RGB color). 1 unused 2 CARD16 n == name-length n STRING8 name p unused, p=pad_to_even_4(n) 4 CARD32 last-change-serial and then the value, For string: bytes type what ------------------------------------ 4 CARD32 n = value-length n STRING8 value p unused, p=pad_to_even_4(n) For integer: bytes type what ------------------------------------ 4 INT32 value For RGB color: bytes type what ------------------------------------ 2 CARD16 red 2 CARD16 blue 2 CARD16 green 2 CARD16 alpha Returns non-zero if some Xft settings was seen, zero otherwise. */ static int parse_settings (unsigned char *prop, unsigned long bytes, struct xsettings *settings) { int int1 = 1; int my_bo = *(char *) &int1 == 1 ? LSBFirst : MSBFirst; int that_bo = prop[0]; CARD32 n_settings; int bytes_parsed = 0; int settings_seen = 0; int i = 0; /* First 4 bytes is a serial number, skip that. */ if (bytes < 12) return settings_seen; memcpy (&n_settings, prop+8, 4); if (my_bo != that_bo) n_settings = bswap_32 (n_settings); bytes_parsed = 12; memset (settings, 0, sizeof (*settings)); while (bytes_parsed+4 < bytes && settings_seen < 7 && i < n_settings) { int type = prop[bytes_parsed++]; CARD16 nlen; CARD32 vlen, ival = 0; char name[128]; /* The names we are looking for are not this long. */ char sval[128]; /* The values we are looking for are not this long. */ bool want_this; int to_cpy; sval[0] = '\0'; ++i; ++bytes_parsed; /* Padding */ memcpy (&nlen, prop+bytes_parsed, 2); bytes_parsed += 2; if (my_bo != that_bo) nlen = bswap_16 (nlen); if (bytes_parsed + nlen > bytes) return settings_seen; to_cpy = min (nlen, sizeof name - 1); memcpy (name, prop+bytes_parsed, to_cpy); name[to_cpy] = '\0'; bytes_parsed += nlen; bytes_parsed = PAD (bytes_parsed); bytes_parsed += 4; /* Skip serial for this value */ if (bytes_parsed > bytes) return settings_seen; want_this = strcmp (XSETTINGS_TOOL_BAR_STYLE, name) == 0; #if defined USE_CAIRO || defined HAVE_XFT if ((nlen > 6 && memcmp (name, "Xft/", 4) == 0) || strcmp (XSETTINGS_FONT_NAME, name) == 0) want_this = true; #endif switch (type) { case 0: /* Integer */ if (bytes_parsed + 4 > bytes) return settings_seen; if (want_this) { memcpy (&ival, prop+bytes_parsed, 4); if (my_bo != that_bo) ival = bswap_32 (ival); } bytes_parsed += 4; break; case 1: /* String */ if (bytes_parsed + 4 > bytes) return settings_seen; memcpy (&vlen, prop+bytes_parsed, 4); bytes_parsed += 4; if (my_bo != that_bo) vlen = bswap_32 (vlen); if (want_this) { to_cpy = min (vlen, sizeof sval - 1); memcpy (sval, prop+bytes_parsed, to_cpy); sval[to_cpy] = '\0'; } bytes_parsed += vlen; bytes_parsed = PAD (bytes_parsed); break; case 2: /* RGB value */ /* No need to parse this */ if (bytes_parsed + 8 > bytes) return settings_seen; bytes_parsed += 8; /* 4 values (r, b, g, alpha), 2 bytes each. */ break; default: /* Parse Error */ return settings_seen; } if (want_this) { if (strcmp (name, XSETTINGS_TOOL_BAR_STYLE) == 0) { dupstring (&settings->tb_style, sval); settings->seen |= SEEN_TB_STYLE; } #if defined USE_CAIRO || defined HAVE_XFT else if (strcmp (name, XSETTINGS_FONT_NAME) == 0) { dupstring (&settings->font, sval); settings->seen |= SEEN_FONT; } else if (strcmp (name, "Xft/Antialias") == 0) { settings->seen |= SEEN_AA; settings->aa = ival != 0; } else if (strcmp (name, "Xft/Hinting") == 0) { settings->seen |= SEEN_HINTING; settings->hinting = ival != 0; } # ifdef FC_HINT_STYLE else if (strcmp (name, "Xft/HintStyle") == 0) { settings->seen |= SEEN_HINTSTYLE; if (strcmp (sval, "hintnone") == 0) settings->hintstyle = FC_HINT_NONE; else if (strcmp (sval, "hintslight") == 0) settings->hintstyle = FC_HINT_SLIGHT; else if (strcmp (sval, "hintmedium") == 0) settings->hintstyle = FC_HINT_MEDIUM; else if (strcmp (sval, "hintfull") == 0) settings->hintstyle = FC_HINT_FULL; else settings->seen &= ~SEEN_HINTSTYLE; } # endif else if (strcmp (name, "Xft/RGBA") == 0) { settings->seen |= SEEN_RGBA; if (strcmp (sval, "none") == 0) settings->rgba = FC_RGBA_NONE; else if (strcmp (sval, "rgb") == 0) settings->rgba = FC_RGBA_RGB; else if (strcmp (sval, "bgr") == 0) settings->rgba = FC_RGBA_BGR; else if (strcmp (sval, "vrgb") == 0) settings->rgba = FC_RGBA_VRGB; else if (strcmp (sval, "vbgr") == 0) settings->rgba = FC_RGBA_VBGR; else settings->seen &= ~SEEN_RGBA; } else if (strcmp (name, "Xft/DPI") == 0 && ival != (CARD32) -1) { settings->seen |= SEEN_DPI; settings->dpi = ival / 1024.0; } else if (strcmp (name, "Xft/lcdfilter") == 0) { settings->seen |= SEEN_LCDFILTER; if (strcmp (sval, "none") == 0) settings->lcdfilter = FC_LCD_NONE; else if (strcmp (sval, "lcddefault") == 0) settings->lcdfilter = FC_LCD_DEFAULT; else settings->seen &= ~SEEN_LCDFILTER; } #endif /* USE_CAIRO || HAVE_XFT */ else want_this = false; settings_seen += want_this; } } return settings_seen; } /* Read settings from the XSettings property window on display for DPYINFO. Store settings read in SETTINGS. Return true iff successful. */ static bool read_settings (struct x_display_info *dpyinfo, struct xsettings *settings) { Atom act_type; int act_form; unsigned long nitems, bytes_after; unsigned char *prop = NULL; Display *dpy = dpyinfo->display; int rc; bool got_settings = false; x_catch_errors (dpy); rc = XGetWindowProperty (dpy, dpyinfo->xsettings_window, dpyinfo->Xatom_xsettings_prop, 0, LONG_MAX, False, AnyPropertyType, &act_type, &act_form, &nitems, &bytes_after, &prop); if (rc == Success && prop != NULL && act_form == 8 && nitems > 0 && act_type == dpyinfo->Xatom_xsettings_prop) got_settings = parse_settings (prop, nitems, settings) != 0; XFree (prop); x_uncatch_errors (); return got_settings; } /* Apply Xft settings in SETTINGS to the Xft library. Store a Lisp event that Xft settings changed. */ static void apply_xft_settings (struct x_display_info *dpyinfo, struct xsettings *settings) { #ifdef HAVE_XFT FcPattern *pat; struct xsettings oldsettings; bool changed = false; memset (&oldsettings, 0, sizeof (oldsettings)); pat = FcPatternCreate (); XftDefaultSubstitute (dpyinfo->display, XScreenNumberOfScreen (dpyinfo->screen), pat); FcPatternGetBool (pat, FC_ANTIALIAS, 0, &oldsettings.aa); FcPatternGetBool (pat, FC_HINTING, 0, &oldsettings.hinting); #ifdef FC_HINT_STYLE FcPatternGetInteger (pat, FC_HINT_STYLE, 0, &oldsettings.hintstyle); #endif FcPatternGetInteger (pat, FC_LCD_FILTER, 0, &oldsettings.lcdfilter); FcPatternGetInteger (pat, FC_RGBA, 0, &oldsettings.rgba); FcPatternGetDouble (pat, FC_DPI, 0, &oldsettings.dpi); if ((settings->seen & SEEN_AA) != 0 && oldsettings.aa != settings->aa) { FcPatternDel (pat, FC_ANTIALIAS); FcPatternAddBool (pat, FC_ANTIALIAS, settings->aa); changed = true; oldsettings.aa = settings->aa; } if ((settings->seen & SEEN_HINTING) != 0 && oldsettings.hinting != settings->hinting) { FcPatternDel (pat, FC_HINTING); FcPatternAddBool (pat, FC_HINTING, settings->hinting); changed = true; oldsettings.hinting = settings->hinting; } if ((settings->seen & SEEN_RGBA) != 0 && oldsettings.rgba != settings->rgba) { FcPatternDel (pat, FC_RGBA); FcPatternAddInteger (pat, FC_RGBA, settings->rgba); oldsettings.rgba = settings->rgba; changed = true; } /* Older fontconfig versions don't have FC_LCD_FILTER. */ if ((settings->seen & SEEN_LCDFILTER) != 0 && oldsettings.lcdfilter != settings->lcdfilter) { FcPatternDel (pat, FC_LCD_FILTER); FcPatternAddInteger (pat, FC_LCD_FILTER, settings->lcdfilter); changed = true; oldsettings.lcdfilter = settings->lcdfilter; } #ifdef FC_HINT_STYLE if ((settings->seen & SEEN_HINTSTYLE) != 0 && oldsettings.hintstyle != settings->hintstyle) { FcPatternDel (pat, FC_HINT_STYLE); FcPatternAddInteger (pat, FC_HINT_STYLE, settings->hintstyle); changed = true; oldsettings.hintstyle = settings->hintstyle; } #endif if ((settings->seen & SEEN_DPI) != 0 && settings->dpi > 0 /* The following conjunct avoids setting `changed' to true when old and new dpi settings do not differ "substantially". Otherwise, the dynamic-setting Elisp code may process all sorts of unrelated settings that override users' font customizations, among others. Compare: https://lists.gnu.org/r/emacs-devel/2016-05/msg00557.html https://lists.gnu.org/r/bug-gnu-emacs/2016-12/msg00820.html As soon as the dynamic-settings code has been tested and verified, this Emacs 25.2 workaround should be removed. */ && ((oldsettings.dpi >= settings->dpi && (oldsettings.dpi - settings->dpi) > 2) || ((settings->dpi > oldsettings.dpi) && (settings->dpi - oldsettings.dpi) > 2))) { FcPatternDel (pat, FC_DPI); FcPatternAddDouble (pat, FC_DPI, settings->dpi); changed = true; oldsettings.dpi = settings->dpi; /* Changing the DPI on this display affects all frames on it. Check FRAME_RES_X and FRAME_RES_Y in frame.h to see how. */ dpyinfo->resy = dpyinfo->resx = settings->dpi; } if (changed) { static char const format[] = "Antialias: %d, Hinting: %d, RGBA: %d, LCDFilter: %d, " "Hintstyle: %d, DPI: %f"; enum { d_formats = 5, d_growth = INT_BUFSIZE_BOUND (int) - sizeof "%d", lf_formats = 1, max_f_integer_digits = DBL_MAX_10_EXP + 1, f_precision = 6, lf_growth = (sizeof "-." + max_f_integer_digits + f_precision - sizeof "%f") }; char buf[sizeof format + d_formats * d_growth + lf_formats * lf_growth]; XftDefaultSet (dpyinfo->display, pat); store_config_changed_event (Qfont_render, XCAR (dpyinfo->name_list_element)); Vxft_settings = make_formatted_string (buf, format, oldsettings.aa, oldsettings.hinting, oldsettings.rgba, oldsettings.lcdfilter, oldsettings.hintstyle, oldsettings.dpi); } else FcPatternDestroy (pat); #endif /* HAVE_XFT */ } /* Read XSettings from the display for DPYINFO. If SEND_EVENT_P store a Lisp event settings that changed. */ static void read_and_apply_settings (struct x_display_info *dpyinfo, bool send_event_p) { struct xsettings settings; if (!read_settings (dpyinfo, &settings)) return; apply_xft_settings (dpyinfo, &settings); if (settings.seen & SEEN_TB_STYLE) { if (send_event_p) store_tool_bar_style_changed (settings.tb_style, dpyinfo); else current_tool_bar_style = map_tool_bar_style (settings.tb_style); xfree (settings.tb_style); } #if defined USE_CAIRO || defined HAVE_XFT if (settings.seen & SEEN_FONT) { if (send_event_p) store_font_name_changed (settings.font); else dupstring (¤t_font, settings.font); xfree (settings.font); } #endif } /* Check if EVENT for the display in DPYINFO is XSettings related. */ void xft_settings_event (struct x_display_info *dpyinfo, const XEvent *event) { bool check_window_p = false, apply_settings_p = false; switch (event->type) { case DestroyNotify: if (dpyinfo->xsettings_window == event->xany.window) check_window_p = true; break; case ClientMessage: if (event->xclient.message_type == dpyinfo->Xatom_xsettings_mgr && event->xclient.data.l[1] == dpyinfo->Xatom_xsettings_sel && event->xclient.window == dpyinfo->root_window) check_window_p = true; break; case PropertyNotify: if (event->xproperty.window == dpyinfo->xsettings_window && event->xproperty.state == PropertyNewValue && event->xproperty.atom == dpyinfo->Xatom_xsettings_prop) apply_settings_p = true; break; } if (check_window_p) { dpyinfo->xsettings_window = None; get_prop_window (dpyinfo); if (dpyinfo->xsettings_window != None) apply_settings_p = true; } if (apply_settings_p) read_and_apply_settings (dpyinfo, true); } /* Initialize GSettings and read startup values. */ static void init_gsettings (void) { #ifdef HAVE_GSETTINGS GVariant *val; bool schema_found = false; #if ! GLIB_CHECK_VERSION (2, 36, 0) g_type_init (); #endif #if GLIB_CHECK_VERSION (2, 32, 0) { GSettingsSchema *sc = g_settings_schema_source_lookup (g_settings_schema_source_get_default (), GSETTINGS_SCHEMA, true); schema_found = sc != NULL; if (sc) g_settings_schema_unref (sc); } #else { const gchar *const *schemas = g_settings_list_schemas (); if (schemas == NULL) return; while (! schema_found && *schemas != NULL) schema_found = strcmp (*schemas++, GSETTINGS_SCHEMA) == 0; } #endif if (!schema_found) return; gsettings_client = g_settings_new (GSETTINGS_SCHEMA); if (!gsettings_client) return; g_object_ref_sink (G_OBJECT (gsettings_client)); g_signal_connect (G_OBJECT (gsettings_client), "changed", G_CALLBACK (something_changed_gsettingsCB), NULL); val = g_settings_get_value (gsettings_client, GSETTINGS_TOOL_BAR_STYLE); if (val) { g_variant_ref_sink (val); if (g_variant_is_of_type (val, G_VARIANT_TYPE_STRING)) current_tool_bar_style = map_tool_bar_style (g_variant_get_string (val, NULL)); g_variant_unref (val); } #if defined USE_CAIRO || defined HAVE_XFT val = g_settings_get_value (gsettings_client, GSETTINGS_MONO_FONT); if (val) { g_variant_ref_sink (val); if (g_variant_is_of_type (val, G_VARIANT_TYPE_STRING)) dupstring (¤t_mono_font, g_variant_get_string (val, NULL)); g_variant_unref (val); } val = g_settings_get_value (gsettings_client, GSETTINGS_FONT_NAME); if (val) { g_variant_ref_sink (val); if (g_variant_is_of_type (val, G_VARIANT_TYPE_STRING)) dupstring (¤t_font, g_variant_get_string (val, NULL)); g_variant_unref (val); } #endif /* USE_CAIRO || HAVE_XFT */ #endif /* HAVE_GSETTINGS */ } /* Init GConf and read startup values. */ static void init_gconf (void) { #if defined (HAVE_GCONF) char *s; #if ! GLIB_CHECK_VERSION (2, 36, 0) g_type_init (); #endif gconf_client = gconf_client_get_default (); gconf_client_set_error_handling (gconf_client, GCONF_CLIENT_HANDLE_NONE); gconf_client_add_dir (gconf_client, GCONF_TOOL_BAR_STYLE, GCONF_CLIENT_PRELOAD_ONELEVEL, NULL); gconf_client_notify_add (gconf_client, GCONF_TOOL_BAR_STYLE, something_changed_gconfCB, NULL, NULL, NULL); s = gconf_client_get_string (gconf_client, GCONF_TOOL_BAR_STYLE, NULL); if (s) { current_tool_bar_style = map_tool_bar_style (s); g_free (s); } #if defined USE_CAIRO || defined HAVE_XFT s = gconf_client_get_string (gconf_client, GCONF_MONO_FONT, NULL); if (s) { dupstring (¤t_mono_font, s); g_free (s); } s = gconf_client_get_string (gconf_client, GCONF_FONT_NAME, NULL); if (s) { dupstring (¤t_font, s); g_free (s); } gconf_client_add_dir (gconf_client, GCONF_MONO_FONT, GCONF_CLIENT_PRELOAD_ONELEVEL, NULL); gconf_client_notify_add (gconf_client, GCONF_MONO_FONT, something_changed_gconfCB, NULL, NULL, NULL); gconf_client_add_dir (gconf_client, GCONF_FONT_NAME, GCONF_CLIENT_PRELOAD_ONELEVEL, NULL); gconf_client_notify_add (gconf_client, GCONF_FONT_NAME, something_changed_gconfCB, NULL, NULL, NULL); #endif /* USE_CAIRO || HAVE_XFT */ #endif /* HAVE_GCONF */ } /* Init Xsettings and read startup values. */ static void init_xsettings (struct x_display_info *dpyinfo) { Display *dpy = dpyinfo->display; block_input (); /* Select events so we can detect client messages sent when selection owner changes. */ XSelectInput (dpy, dpyinfo->root_window, StructureNotifyMask); get_prop_window (dpyinfo); if (dpyinfo->xsettings_window != None) read_and_apply_settings (dpyinfo, false); unblock_input (); } void xsettings_initialize (struct x_display_info *dpyinfo) { if (first_dpyinfo == NULL) first_dpyinfo = dpyinfo; init_gconf (); init_xsettings (dpyinfo); init_gsettings (); } /* Return the system monospaced font. May be NULL if not known. */ const char * xsettings_get_system_font (void) { return current_mono_font; } #ifdef USE_LUCID /* Return the system font. May be NULL if not known. */ const char * xsettings_get_system_normal_font (void) { return current_font; } #endif DEFUN ("font-get-system-normal-font", Ffont_get_system_normal_font, Sfont_get_system_normal_font, 0, 0, 0, doc: /* Get the system default application font. */) (void) { return current_font ? build_string (current_font) : Qnil; } DEFUN ("font-get-system-font", Ffont_get_system_font, Sfont_get_system_font, 0, 0, 0, doc: /* Get the system default fixed width font. */) (void) { return current_mono_font ? build_string (current_mono_font) : Qnil; } DEFUN ("tool-bar-get-system-style", Ftool_bar_get_system_style, Stool_bar_get_system_style, 0, 0, 0, doc: /* Get the system tool bar style. If no system tool bar style is known, return `tool-bar-style' if set to a known style. Otherwise return image. */) (void) { if (EQ (Vtool_bar_style, Qimage) || EQ (Vtool_bar_style, Qtext) || EQ (Vtool_bar_style, Qboth) || EQ (Vtool_bar_style, Qboth_horiz) || EQ (Vtool_bar_style, Qtext_image_horiz)) return Vtool_bar_style; if (!NILP (current_tool_bar_style)) return current_tool_bar_style; return Qimage; } void syms_of_xsettings (void) { current_mono_font = NULL; PDUMPER_IGNORE (current_mono_font); current_font = NULL; PDUMPER_IGNORE (current_font); first_dpyinfo = NULL; PDUMPER_IGNORE (first_dpyinfo); #ifdef HAVE_GSETTINGS gsettings_client = NULL; PDUMPER_IGNORE (gsettings_client); #endif #ifdef HAVE_GCONF gconf_client = NULL; PDUMPER_IGNORE (gconf_client); #endif DEFSYM (Qmonospace_font_name, "monospace-font-name"); DEFSYM (Qfont_name, "font-name"); DEFSYM (Qfont_render, "font-render"); defsubr (&Sfont_get_system_font); defsubr (&Sfont_get_system_normal_font); DEFVAR_BOOL ("font-use-system-font", use_system_font, doc: /* Non-nil means to apply the system defined font dynamically. When this is non-nil and the system defined fixed width font changes, we update frames dynamically. If this variable is nil, Emacs ignores system font changes. */); use_system_font = false; DEFVAR_LISP ("xft-settings", Vxft_settings, doc: /* Font settings applied to Xft. */); Vxft_settings = empty_unibyte_string; #if defined USE_CAIRO || defined HAVE_XFT Fprovide (intern_c_string ("font-render-setting"), Qnil); #if defined (HAVE_GCONF) || defined (HAVE_GSETTINGS) Fprovide (intern_c_string ("system-font-setting"), Qnil); #endif #endif current_tool_bar_style = Qnil; DEFSYM (Qtool_bar_style, "tool-bar-style"); defsubr (&Stool_bar_get_system_style); Fprovide (intern_c_string ("dynamic-setting"), Qnil); }