1 /* GDK - The GIMP Drawing Kit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GTK+ Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
31 #include "gdk.h" /* For gdk_flush() */
33 #include "gdkpixmap.h"
34 #include "gdkinternals.h"
35 #include "gdkdisplay-x11.h"
45 /* If this variable is FALSE, it indicates that we should
46 * avoid trying to use multibyte conversion functions and
47 * assume everything is 1-byte per character
49 static gboolean gdk_use_mb;
52 _gdk_x11_initialize_locale (void)
55 gchar *current_locale;
56 static char *last_locale = NULL;
60 current_locale = setlocale (LC_ALL, NULL);
62 if (last_locale && strcmp (last_locale, current_locale) == 0)
66 last_locale = g_strdup (current_locale);
68 if (!XSupportsLocale ())
69 g_warning ("locale not supported by Xlib");
71 if (!XSetLocaleModifiers (""))
72 g_warning ("can not set locale modifiers");
74 if ((strcmp (current_locale, "C")) && (strcmp (current_locale, "POSIX")))
79 /* Detect ancient GNU libc, where mb == UTF8. Not useful unless it's
80 * really a UTF8 locale. The below still probably will
81 * screw up on Greek, Cyrillic, etc, encoded as UTF8.
84 if ((MB_CUR_MAX == 2) &&
85 (mbstowcs (&result, "\xdd\xa5", 1) > 0) &&
88 if ((strlen (current_locale) < 4) ||
89 g_ascii_strcasecmp (current_locale + strlen(current_locale) - 4, "utf8"))
96 g_message ("%s multi-byte string functions.",
97 gdk_use_mb ? "Using" : "Not using"));
103 gdk_set_locale (void)
105 if (!setlocale (LC_ALL,""))
106 g_warning ("locale not supported by C library");
108 _gdk_x11_initialize_locale ();
110 return setlocale (LC_ALL, NULL);
116 GdkDisplay *display = gdk_get_default_display ();
119 display = _gdk_displays->data;
127 * Returns a multi-byte string converted from the specified array
128 * of wide characters. The string is newly allocated. The array of
129 * wide characters must be null-terminated. If the conversion is
130 * failed, it returns NULL.
133 gdk_wcstombs (const GdkWChar *src)
139 GdkDisplay *display = find_a_display ();
140 Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
143 if (sizeof(wchar_t) != sizeof(GdkWChar))
147 for (i=0; src[i]; i++);
148 src_alt = g_new (wchar_t, i+1);
151 if (XwcTextListToTextProperty (xdisplay, &src_alt, 1, XTextStyle, &tpr)
161 if (XwcTextListToTextProperty (xdisplay, (wchar_t**)&src, 1,
162 XTextStyle, &tpr) != Success)
168 * We must copy the string into an area allocated by glib, because
169 * the string 'tpr.value' must be freed by XFree().
171 mbstr = g_strdup(tpr.value);
179 while (src[length] != 0)
182 mbstr = g_new (gchar, length + 1);
184 for (i=0; i<length+1; i++)
194 * Converts the specified string into wide characters, and, returns the
195 * number of wide characters written. The string 'src' must be
196 * null-terminated. If the conversion is failed, it returns -1.
199 gdk_mbstowcs (GdkWChar *dest, const gchar *src, gint dest_max)
203 GdkDisplay *display = find_a_display ();
204 Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
206 wchar_t **wstrs, *wstr_src;
209 if (XmbTextListToTextProperty (xdisplay, (char **)&src, 1, XTextStyle,
213 /* NoMem or LocaleNotSupp */
216 if (XwcTextPropertyToTextList (xdisplay, &tpr, &wstrs, &num_wstrs)
227 for (len_cpy=0; len_cpy<dest_max && wstr_src[len_cpy]; len_cpy++)
228 dest[len_cpy] = wstr_src[len_cpy];
229 XwcFreeStringList (wstrs);
236 for (i=0; i<dest_max && src[i]; i++)