1 /* GTK - The GIMP Toolkit
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 Free
16 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
21 * file for a list of people on the GTK+ Team. See the ChangeLog
22 * files for a list of changes. These files are distributed with
23 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
33 #include <glib/gstdio.h>
35 #include "gtkimmodule.h"
36 #include "gtkimcontextsimple.h"
37 #include "gtksettings.h"
38 #include "gtkmainprivate.h"
39 #include "gtkprivate.h"
42 #define SIMPLE_ID "gtk-im-context-simple"
46 * @context_id: The unique identification string of the input method.
47 * @context_name: The human-readable name of the input method.
48 * @domain: Translation domain to be used with dgettext()
49 * @domain_dirname: Name of locale directory for use with bindtextdomain()
50 * @default_locales: A colon-separated list of locales where this input method
51 * should be the default. The asterisk "*" sets the default for all locales.
53 * Bookkeeping information about a loadable input method.
56 typedef struct _GtkIMModule GtkIMModule;
57 typedef struct _GtkIMModuleClass GtkIMModuleClass;
59 #define GTK_TYPE_IM_MODULE (gtk_im_module_get_type ())
60 #define GTK_IM_MODULE(im_module) (G_TYPE_CHECK_INSTANCE_CAST ((im_module), GTK_TYPE_IM_MODULE, GtkIMModule))
61 #define GTK_IS_IM_MODULE(im_module) (G_TYPE_CHECK_INSTANCE_TYPE ((im_module), GTK_TYPE_IM_MODULE))
65 GTypeModule parent_instance;
71 void (*list) (const GtkIMContextInfo ***contexts,
73 void (*init) (GTypeModule *module);
75 GtkIMContext *(*create) (const gchar *context_id);
77 GtkIMContextInfo **contexts;
83 struct _GtkIMModuleClass
85 GTypeModuleClass parent_class;
88 static GType gtk_im_module_get_type (void);
90 static gint n_loaded_contexts = 0;
91 static GHashTable *contexts_hash = NULL;
92 static GSList *modules_list = NULL;
94 static GObjectClass *parent_class = NULL;
97 gtk_im_module_load (GTypeModule *module)
99 GtkIMModule *im_module = GTK_IM_MODULE (module);
101 if (!im_module->builtin)
103 im_module->library = g_module_open (im_module->path, G_MODULE_BIND_LAZY | G_MODULE_BIND_LOCAL);
104 if (!im_module->library)
106 g_warning ("%s", g_module_error());
110 /* extract symbols from the lib */
111 if (!g_module_symbol (im_module->library, "im_module_init",
112 (gpointer *)&im_module->init) ||
113 !g_module_symbol (im_module->library, "im_module_exit",
114 (gpointer *)&im_module->exit) ||
115 !g_module_symbol (im_module->library, "im_module_list",
116 (gpointer *)&im_module->list) ||
117 !g_module_symbol (im_module->library, "im_module_create",
118 (gpointer *)&im_module->create))
120 g_warning ("%s", g_module_error());
121 g_module_close (im_module->library);
127 /* call the module's init function to let it */
128 /* setup anything it needs to set up. */
129 im_module->init (module);
135 gtk_im_module_unload (GTypeModule *module)
137 GtkIMModule *im_module = GTK_IM_MODULE (module);
141 if (!im_module->builtin)
143 g_module_close (im_module->library);
144 im_module->library = NULL;
146 im_module->init = NULL;
147 im_module->exit = NULL;
148 im_module->list = NULL;
149 im_module->create = NULL;
153 /* This only will ever be called if an error occurs during
157 gtk_im_module_finalize (GObject *object)
159 GtkIMModule *module = GTK_IM_MODULE (object);
161 g_free (module->path);
163 parent_class->finalize (object);
166 G_DEFINE_TYPE (GtkIMModule, gtk_im_module, G_TYPE_TYPE_MODULE)
169 gtk_im_module_class_init (GtkIMModuleClass *class)
171 GTypeModuleClass *module_class = G_TYPE_MODULE_CLASS (class);
172 GObjectClass *gobject_class = G_OBJECT_CLASS (class);
174 parent_class = G_OBJECT_CLASS (g_type_class_peek_parent (class));
176 module_class->load = gtk_im_module_load;
177 module_class->unload = gtk_im_module_unload;
179 gobject_class->finalize = gtk_im_module_finalize;
183 gtk_im_module_init (GtkIMModule* object)
188 free_info (GtkIMContextInfo *info)
190 g_free ((char *)info->context_id);
191 g_free ((char *)info->context_name);
192 g_free ((char *)info->domain);
193 g_free ((char *)info->domain_dirname);
194 g_free ((char *)info->default_locales);
199 add_module (GtkIMModule *module, GSList *infos)
201 GSList *tmp_list = infos;
203 gint n = g_slist_length (infos);
204 module->contexts = g_new (GtkIMContextInfo *, n);
208 GtkIMContextInfo *info = tmp_list->data;
210 if (g_hash_table_lookup (contexts_hash, info->context_id))
212 free_info (info); /* Duplicate */
216 g_hash_table_insert (contexts_hash, (char *)info->context_id, module);
217 module->contexts[i++] = tmp_list->data;
221 tmp_list = tmp_list->next;
223 g_slist_free (infos);
224 module->n_contexts = i;
226 modules_list = g_slist_prepend (modules_list, module);
232 correct_libdir_prefix (gchar **path)
234 /* GTK_LIBDIR is the build-time libdir */
235 if (strncmp (*path, GTK_LIBDIR, strlen (GTK_LIBDIR)) == 0)
237 /* This is an entry put there by make install on the
238 * packager's system. On Windows a prebuilt GTK+
239 * package can be installed in a random
240 * location. The gtk.immodules file distributed in
241 * such a package contains paths from the package
242 * builder's machine. Replace the path with the real
243 * one on this machine.
246 *path = g_strconcat (_gtk_get_libdir (), tem + strlen (GTK_LIBDIR), NULL);
252 correct_localedir_prefix (gchar **path)
255 if (strncmp (*path, GTK_LOCALEDIR, strlen (GTK_LOCALEDIR)) == 0)
258 *path = g_strconcat (_gtk_get_localedir (), tem + strlen (GTK_LOCALEDIR), NULL);
265 G_GNUC_UNUSED static GtkIMModule *
266 add_builtin_module (const gchar *module_name,
267 const GtkIMContextInfo **contexts,
270 GtkIMModule *module = g_object_new (GTK_TYPE_IM_MODULE, NULL);
271 GSList *infos = NULL;
274 for (i = 0; i < n_contexts; i++)
276 GtkIMContextInfo *info = g_new (GtkIMContextInfo, 1);
277 info->context_id = g_strdup (contexts[i]->context_id);
278 info->context_name = g_strdup (contexts[i]->context_name);
279 info->domain = g_strdup (contexts[i]->domain);
280 info->domain_dirname = g_strdup (contexts[i]->domain_dirname);
282 correct_localedir_prefix ((char **) &info->domain_dirname);
284 info->default_locales = g_strdup (contexts[i]->default_locales);
285 infos = g_slist_prepend (infos, info);
288 module->builtin = TRUE;
289 g_type_module_set_name (G_TYPE_MODULE (module), module_name);
290 add_module (module, infos);
296 gtk_im_module_initialize (void)
298 GString *line_buf = g_string_new (NULL);
299 GString *tmp_buf = g_string_new (NULL);
300 gchar *filename = gtk_rc_get_im_module_file();
302 gboolean have_error = FALSE;
304 GtkIMModule *module = NULL;
305 GSList *infos = NULL;
307 contexts_hash = g_hash_table_new (g_str_hash, g_str_equal);
309 #define do_builtin(m) \
311 const GtkIMContextInfo **contexts; \
313 extern void _gtk_immodule_ ## m ## _list (const GtkIMContextInfo ***contexts, \
314 guint *n_contexts); \
315 extern void _gtk_immodule_ ## m ## _init (GTypeModule *module); \
316 extern void _gtk_immodule_ ## m ## _exit (void); \
317 extern GtkIMContext *_gtk_immodule_ ## m ## _create (const gchar *context_id); \
319 _gtk_immodule_ ## m ## _list (&contexts, &n_contexts); \
320 module = add_builtin_module (#m, contexts, n_contexts); \
321 module->init = _gtk_immodule_ ## m ## _init; \
322 module->exit = _gtk_immodule_ ## m ## _exit; \
323 module->create = _gtk_immodule_ ## m ## _create; \
327 #ifdef INCLUDE_IM_am_et
330 #ifdef INCLUDE_IM_cedilla
331 do_builtin (cedilla);
333 #ifdef INCLUDE_IM_cyrillic_translit
334 do_builtin (cyrillic_translit);
336 #ifdef INCLUDE_IM_ime
339 #ifdef INCLUDE_IM_inuktitut
340 do_builtin (inuktitut);
342 #ifdef INCLUDE_IM_ipa
345 #ifdef INCLUDE_IM_multipress
346 do_builtin (multipress);
348 #ifdef INCLUDE_IM_thai
351 #ifdef INCLUDE_IM_ti_er
354 #ifdef INCLUDE_IM_ti_et
357 #ifdef INCLUDE_IM_viqr
360 #ifdef INCLUDE_IM_xim
366 file = g_fopen (filename, "r");
369 /* In case someone wants only the default input method,
370 * we allow no file at all.
372 g_string_free (line_buf, TRUE);
373 g_string_free (tmp_buf, TRUE);
378 while (!have_error && pango_read_line (file, line_buf))
384 if (!pango_skip_space (&p))
386 /* Blank line marking the end of a module
388 if (module && *p != '#')
390 add_module (module, infos);
400 /* Read a module location
402 module = g_object_new (GTK_TYPE_IM_MODULE, NULL);
404 if (!pango_scan_string (&p, tmp_buf) ||
405 pango_skip_space (&p))
407 g_warning ("Error parsing context info in '%s'\n %s",
408 filename, line_buf->str);
412 module->path = g_strdup (tmp_buf->str);
414 correct_libdir_prefix (&module->path);
416 g_type_module_set_name (G_TYPE_MODULE (module), module->path);
420 GtkIMContextInfo *info = g_new0 (GtkIMContextInfo, 1);
422 /* Read information about a context type
424 if (!pango_scan_string (&p, tmp_buf))
426 info->context_id = g_strdup (tmp_buf->str);
428 if (!pango_scan_string (&p, tmp_buf))
430 info->context_name = g_strdup (tmp_buf->str);
432 if (!pango_scan_string (&p, tmp_buf))
434 info->domain = g_strdup (tmp_buf->str);
436 if (!pango_scan_string (&p, tmp_buf))
438 info->domain_dirname = g_strdup (tmp_buf->str);
440 correct_localedir_prefix ((char **) &info->domain_dirname);
443 if (!pango_scan_string (&p, tmp_buf))
445 info->default_locales = g_strdup (tmp_buf->str);
447 if (pango_skip_space (&p))
450 infos = g_slist_prepend (infos, info);
454 g_warning ("Error parsing context info in '%s'\n %s",
455 filename, line_buf->str);
462 GSList *tmp_list = infos;
465 free_info (tmp_list->data);
466 tmp_list = tmp_list->next;
468 g_slist_free (infos);
470 g_object_unref (module);
473 add_module (module, infos);
476 g_string_free (line_buf, TRUE);
477 g_string_free (tmp_buf, TRUE);
482 compare_gtkimcontextinfo_name(const GtkIMContextInfo **a,
483 const GtkIMContextInfo **b)
485 return g_utf8_collate ((*a)->context_name, (*b)->context_name);
489 * _gtk_im_module_list:
490 * @contexts: location to store an array of pointers to #GtkIMContextInfo
491 * this array should be freed with g_free() when you are finished.
492 * The structures it points are statically allocated and should
493 * not be modified or freed.
494 * @n_contexts: the length of the array stored in @contexts
496 * List all available types of input method context
499 _gtk_im_module_list (const GtkIMContextInfo ***contexts,
508 GtkIMContextInfo simple_context_info = {
521 static gboolean beenhere = FALSE;
525 gtk_im_module_initialize ();
531 /* correct_localedir_prefix() requires its parameter to be a
534 simple_context_info.domain_dirname = g_strdup (simple_context_info.domain_dirname);
535 correct_localedir_prefix ((char **) &simple_context_info.domain_dirname);
540 *n_contexts = (n_loaded_contexts + 1);
547 *contexts = g_new (const GtkIMContextInfo *, n_loaded_contexts + 1);
549 (*contexts)[n++] = &simple_context_info;
551 tmp_list = modules_list;
554 GtkIMModule *module = tmp_list->data;
556 for (i=0; i<module->n_contexts; i++)
557 (*contexts)[n++] = module->contexts[i];
559 tmp_list = tmp_list->next;
562 /* fisrt element (Default) should always be at top */
563 qsort ((*contexts)+1, n-1, sizeof (GtkIMContextInfo *), (GCompareFunc)compare_gtkimcontextinfo_name);
568 * _gtk_im_module_create:
569 * @context_id: the context ID for the context type to create
571 * Create an IM context of a type specified by the string
574 * Return value: a newly created input context of or @context_id, or
575 * if that could not be created, a newly created GtkIMContextSimple.
578 _gtk_im_module_create (const gchar *context_id)
580 GtkIMModule *im_module;
581 GtkIMContext *context = NULL;
584 gtk_im_module_initialize ();
586 if (strcmp (context_id, SIMPLE_ID) != 0)
588 im_module = g_hash_table_lookup (contexts_hash, context_id);
591 g_warning ("Attempt to load unknown IM context type '%s'", context_id);
595 if (g_type_module_use (G_TYPE_MODULE (im_module)))
597 context = im_module->create (context_id);
598 g_type_module_unuse (G_TYPE_MODULE (im_module));
602 g_warning ("Loading IM context type '%s' failed", context_id);
607 return gtk_im_context_simple_new ();
612 /* Match @locale against @against.
614 * 'en_US' against 'en_US' => 4
615 * 'en_US' against 'en' => 3
616 * 'en', 'en_UK' against 'en_US' => 2
617 * all locales, against '*' => 1
620 match_locale (const gchar *locale,
621 const gchar *against,
624 if (strcmp (against, "*") == 0)
627 if (g_ascii_strcasecmp (locale, against) == 0)
630 if (g_ascii_strncasecmp (locale, against, 2) == 0)
631 return (against_len == 2) ? 3 : 2;
637 * _gtk_im_module_get_default_context_id:
638 * @client_window: a window
640 * Return the context_id of the best IM context type
641 * for the given window.
643 * Return value: the context ID (will never be %NULL)
646 _gtk_im_module_get_default_context_id (GdkWindow *client_window)
649 const gchar *context_id = NULL;
650 gint best_goodness = 0;
652 gchar *tmp_locale, *tmp;
655 GtkSettings *settings;
658 gtk_im_module_initialize ();
660 envvar = g_getenv ("GTK_IM_MODULE");
662 (strcmp (envvar, SIMPLE_ID) == 0 ||
663 g_hash_table_lookup (contexts_hash, envvar)))
666 /* Check if the certain immodule is set in XSETTINGS.
668 if (GDK_IS_WINDOW (client_window))
670 screen = gdk_window_get_screen (client_window);
671 settings = gtk_settings_get_for_screen (screen);
672 g_object_get (G_OBJECT (settings), "gtk-im-module", &tmp, NULL);
675 if (strcmp (tmp, SIMPLE_ID) == 0)
676 context_id = SIMPLE_ID;
680 module = g_hash_table_lookup (contexts_hash, tmp);
682 context_id = module->contexts[0]->context_id;
691 /* Strip the locale code down to the essentials
693 tmp_locale = _gtk_get_lc_ctype ();
694 tmp = strchr (tmp_locale, '.');
697 tmp = strchr (tmp_locale, '@');
701 tmp_list = modules_list;
704 GtkIMModule *module = tmp_list->data;
706 for (i = 0; i < module->n_contexts; i++)
708 const gchar *p = module->contexts[i]->default_locales;
711 const gchar *q = strchr (p, ':');
712 gint goodness = match_locale (tmp_locale, p, q ? q - p : strlen (p));
714 if (goodness > best_goodness)
716 context_id = module->contexts[i]->context_id;
717 best_goodness = goodness;
720 p = q ? q + 1 : NULL;
724 tmp_list = tmp_list->next;
729 return context_id ? context_id : SIMPLE_ID;