diff options
Diffstat (limited to 'panels/common/cc-common-language.c')
| -rw-r--r-- | panels/common/cc-common-language.c | 304 |
1 files changed, 304 insertions, 0 deletions
diff --git a/panels/common/cc-common-language.c b/panels/common/cc-common-language.c new file mode 100644 index 0000000..9357c3e --- /dev/null +++ b/panels/common/cc-common-language.c @@ -0,0 +1,304 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- + * + * Copyright 2009-2010 Red Hat, Inc, + * + * This program 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 2 of the License, or + * (at your option) any later version. + * + * This program 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 this program; if not, see <http://www.gnu.org/licenses/>. + * + * Written by: Matthias Clasen <mclasen@redhat.com> + */ + +#include "config.h" + +#include <stdlib.h> +#include <locale.h> + +#include <glib.h> +#include <glib/gi18n.h> +#include <gtk/gtk.h> + +#include <fontconfig/fontconfig.h> + +#define GNOME_DESKTOP_USE_UNSTABLE_API +#include <libgnome-desktop/gnome-languages.h> + +#include "cc-common-language.h" +#include "shell/cc-object-storage.h" + +static char *get_lang_for_user_object_path (const char *path); + +static gboolean +iter_for_language (GtkTreeModel *model, + const gchar *lang, + GtkTreeIter *iter, + gboolean region) +{ + g_autofree gchar *name = NULL; + + g_assert (gtk_tree_model_get_iter_first (model, iter)); + do { + g_autofree gchar *l = NULL; + gtk_tree_model_get (model, iter, LOCALE_COL, &l, -1); + if (g_strcmp0 (l, lang) == 0) + return TRUE; + } while (gtk_tree_model_iter_next (model, iter)); + + name = gnome_normalize_locale (lang); + if (name != NULL) { + g_autofree gchar *language = NULL; + + if (region) { + language = gnome_get_country_from_locale (name, NULL); + } + else { + language = gnome_get_language_from_locale (name, NULL); + } + + gtk_list_store_insert_with_values (GTK_LIST_STORE (model), + iter, + -1, + LOCALE_COL, name, + DISPLAY_LOCALE_COL, language, + -1); + return TRUE; + } + + return FALSE; +} + +gboolean +cc_common_language_get_iter_for_language (GtkTreeModel *model, + const gchar *lang, + GtkTreeIter *iter) +{ + return iter_for_language (model, lang, iter, FALSE); +} + +gboolean +cc_common_language_has_font (const gchar *locale) +{ + const FcCharSet *charset; + FcPattern *pattern; + FcObjectSet *object_set; + FcFontSet *font_set; + g_autofree gchar *language_code = NULL; + gboolean is_displayable; + + is_displayable = FALSE; + pattern = NULL; + object_set = NULL; + font_set = NULL; + + if (!gnome_parse_locale (locale, &language_code, NULL, NULL, NULL)) + return FALSE; + + charset = FcLangGetCharSet ((FcChar8 *) language_code); + if (!charset) { + /* fontconfig does not know about this language */ + is_displayable = TRUE; + } + else { + /* see if any fonts support rendering it */ + pattern = FcPatternBuild (NULL, FC_LANG, FcTypeString, language_code, NULL); + + if (pattern == NULL) + goto done; + + object_set = FcObjectSetCreate (); + + if (object_set == NULL) + goto done; + + font_set = FcFontList (NULL, pattern, object_set); + + if (font_set == NULL) + goto done; + + is_displayable = (font_set->nfont > 0); + } + + done: + if (font_set != NULL) + FcFontSetDestroy (font_set); + + if (object_set != NULL) + FcObjectSetDestroy (object_set); + + if (pattern != NULL) + FcPatternDestroy (pattern); + + return is_displayable; +} + +gchar * +cc_common_language_get_current_language (void) +{ + gchar *language; + g_autofree gchar *path = NULL; + const gchar *locale; + + path = g_strdup_printf ("/org/freedesktop/Accounts/User%d", getuid ()); + language = get_lang_for_user_object_path (path); + if (language != NULL && *language != '\0') + return language; + + locale = (const gchar *) setlocale (LC_MESSAGES, NULL); + if (locale) + language = gnome_normalize_locale (locale); + else + language = NULL; + + return language; +} + +static char * +get_lang_for_user_object_path (const char *path) +{ + g_autoptr(GError) error = NULL; + g_autoptr(GDBusProxy) user = NULL; + g_autoptr(GVariant) props = NULL; + char *lang; + + user = cc_object_storage_create_dbus_proxy_sync (G_BUS_TYPE_SYSTEM, + G_DBUS_PROXY_FLAGS_NONE, + "org.freedesktop.Accounts", + path, + "org.freedesktop.Accounts.User", + NULL, + &error); + if (user == NULL) { + g_warning ("Failed to get proxy for user '%s': %s", + path, error->message); + return NULL; + } + + props = g_dbus_proxy_get_cached_property (user, "Language"); + if (props == NULL) + return NULL; + lang = g_variant_dup_string (props, NULL); + + return lang; +} + +/* + * Note that @lang needs to be formatted like the locale strings + * returned by gnome_get_all_locales(). + */ +static void +insert_language (GHashTable *ht, + const char *lang) +{ + g_autofree gchar *label_own_lang = NULL; + g_autofree gchar *label_current_lang = NULL; + g_autofree gchar *label_untranslated = NULL; + + label_own_lang = gnome_get_language_from_locale (lang, lang); + label_current_lang = gnome_get_language_from_locale (lang, NULL); + label_untranslated = gnome_get_language_from_locale (lang, "C"); + + /* We don't have a translation for the label in + * its own language? */ + if (g_strcmp0 (label_own_lang, label_untranslated) == 0) { + if (g_strcmp0 (label_current_lang, label_untranslated) == 0) + g_hash_table_insert (ht, g_strdup (lang), g_strdup (label_untranslated)); + else + g_hash_table_insert (ht, g_strdup (lang), g_strdup (label_current_lang)); + } else { + g_hash_table_insert (ht, g_strdup (lang), g_strdup (label_own_lang)); + } +} + +GHashTable * +cc_common_language_get_initial_languages (void) +{ + GHashTable *ht; + + ht = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free); + + insert_language (ht, "en_US.UTF-8"); + insert_language (ht, "en_GB.UTF-8"); + insert_language (ht, "de_DE.UTF-8"); + insert_language (ht, "fr_FR.UTF-8"); + insert_language (ht, "es_ES.UTF-8"); + insert_language (ht, "zh_CN.UTF-8"); + insert_language (ht, "ja_JP.UTF-8"); + insert_language (ht, "ru_RU.UTF-8"); + insert_language (ht, "ar_EG.UTF-8"); + + return ht; +} + +static void +foreach_user_lang_cb (gpointer key, + gpointer value, + gpointer user_data) +{ + GtkListStore *store = (GtkListStore *) user_data; + const char *locale = (const char *) key; + const char *display_locale = (const char *) value; + GtkTreeIter iter; + + gtk_list_store_append (store, &iter); + gtk_list_store_set (store, &iter, + LOCALE_COL, locale, + DISPLAY_LOCALE_COL, display_locale, + -1); +} + +void +cc_common_language_add_user_languages (GtkTreeModel *model) +{ + g_autofree gchar *name = NULL; + GtkTreeIter iter; + GtkListStore *store = GTK_LIST_STORE (model); + GHashTable *user_langs; + const char *display; + + gtk_list_store_clear (store); + + user_langs = cc_common_language_get_initial_languages (); + + /* Add the current locale first */ + name = cc_common_language_get_current_language (); + display = g_hash_table_lookup (user_langs, name); + if (!display) { + g_autofree gchar *language = NULL; + g_autofree gchar *country = NULL; + g_autofree gchar *codeset = NULL; + + gnome_parse_locale (name, &language, &country, &codeset, NULL); + + if (!codeset || !g_str_equal (codeset, "UTF-8")) + g_warning ("Current user locale codeset isn't UTF-8"); + + g_free (name); + name = g_strdup_printf ("%s_%s.UTF-8", language, country); + + insert_language (user_langs, name); + display = g_hash_table_lookup (user_langs, name); + } + + gtk_list_store_append (store, &iter); + gtk_list_store_set (store, &iter, LOCALE_COL, name, DISPLAY_LOCALE_COL, display, -1); + g_hash_table_remove (user_langs, name); + + /* The rest of the languages */ + g_hash_table_foreach (user_langs, (GHFunc) foreach_user_lang_cb, store); + + /* And now the "Other…" selection */ + gtk_list_store_append (store, &iter); + gtk_list_store_set (store, &iter, LOCALE_COL, NULL, DISPLAY_LOCALE_COL, _("Other…"), -1); + + g_hash_table_destroy (user_langs); +} + |