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-rw-r--r--panels/common/cc-common-language.c304
1 files changed, 304 insertions, 0 deletions
diff --git a/panels/common/cc-common-language.c b/panels/common/cc-common-language.c
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+++ b/panels/common/cc-common-language.c
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+/* -*- 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);
+}
+