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-rw-r--r--gnome-initial-setup/cc-common-language.c316
1 files changed, 316 insertions, 0 deletions
diff --git a/gnome-initial-setup/cc-common-language.c b/gnome-initial-setup/cc-common-language.c
new file mode 100644
index 0000000..16dd28f
--- /dev/null
+++ b/gnome-initial-setup/cc-common-language.c
@@ -0,0 +1,316 @@
+/* -*- 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"
+
+static char *get_lang_for_user_object_path (const char *path);
+
+static char *current_language;
+
+gboolean
+cc_common_language_has_font (const gchar *locale)
+{
+ const FcCharSet *charset;
+ FcPattern *pattern;
+ FcObjectSet *object_set;
+ FcFontSet *font_set;
+ gchar *language_code;
+ 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);
+
+ g_free (language_code);
+
+ return is_displayable;
+}
+
+gchar *
+cc_common_language_get_current_language (void)
+{
+ g_assert (current_language != NULL);
+ return g_strdup (current_language);
+}
+
+void
+cc_common_language_set_current_language (const char *locale)
+{
+ g_clear_pointer (&current_language, g_free);
+ current_language = gnome_normalize_locale (locale);
+}
+
+static gboolean
+user_language_has_translations (const char *locale)
+{
+ char *name, *language_code, *territory_code;
+ gboolean ret;
+
+ gnome_parse_locale (locale,
+ &language_code,
+ &territory_code,
+ NULL, NULL);
+ name = g_strdup_printf ("%s%s%s",
+ language_code,
+ territory_code != NULL? "_" : "",
+ territory_code != NULL? territory_code : "");
+ g_free (language_code);
+ g_free (territory_code);
+ ret = gnome_language_has_translations (name);
+ g_free (name);
+
+ return ret;
+}
+
+static char *
+get_lang_for_user_object_path (const char *path)
+{
+ GError *error = NULL;
+ GDBusProxy *user;
+ GVariant *props;
+ char *lang;
+
+ user = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SYSTEM,
+ G_DBUS_PROXY_FLAGS_NONE,
+ NULL,
+ "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);
+ g_error_free (error);
+ return NULL;
+ }
+
+ lang = NULL;
+ props = g_dbus_proxy_get_cached_property (user, "Language");
+ if (props != NULL) {
+ lang = g_variant_dup_string (props, NULL);
+ g_variant_unref (props);
+ }
+
+ g_object_unref (user);
+ return lang;
+}
+
+static void
+add_other_users_language (GHashTable *ht)
+{
+ GVariant *variant;
+ GVariantIter *vi;
+ GError *error = NULL;
+ const char *str;
+ GDBusProxy *proxy;
+
+ proxy = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SYSTEM,
+ G_DBUS_PROXY_FLAGS_NONE,
+ NULL,
+ "org.freedesktop.Accounts",
+ "/org/freedesktop/Accounts",
+ "org.freedesktop.Accounts",
+ NULL,
+ NULL);
+
+ if (proxy == NULL)
+ return;
+
+ variant = g_dbus_proxy_call_sync (proxy,
+ "ListCachedUsers",
+ NULL,
+ G_DBUS_CALL_FLAGS_NONE,
+ -1,
+ NULL,
+ &error);
+ if (variant == NULL) {
+ g_warning ("Failed to list existing users: %s", error->message);
+ g_error_free (error);
+ g_object_unref (proxy);
+ return;
+ }
+ g_variant_get (variant, "(ao)", &vi);
+ while (g_variant_iter_loop (vi, "o", &str)) {
+ char *lang;
+ char *name;
+ char *language;
+
+ lang = get_lang_for_user_object_path (str);
+ if (lang != NULL && *lang != '\0' &&
+ cc_common_language_has_font (lang) &&
+ user_language_has_translations (lang)) {
+ name = gnome_normalize_locale (lang);
+ if (!g_hash_table_lookup (ht, name)) {
+ language = gnome_get_language_from_locale (name, NULL);
+ g_hash_table_insert (ht, name, language);
+ }
+ else {
+ g_free (name);
+ }
+ }
+ g_free (lang);
+ }
+ g_variant_iter_free (vi);
+ g_variant_unref (variant);
+
+ g_object_unref (proxy);
+}
+
+/*
+ * 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)
+{
+ locale_t locale;
+ char *label_own_lang;
+ char *label_current_lang;
+ char *label_untranslated;
+ char *key;
+
+ locale = newlocale (LC_MESSAGES_MASK, lang, (locale_t) 0);
+ if (locale == (locale_t) 0) {
+ g_debug ("%s: Failed to create locale %s", G_STRFUNC, lang);
+ return;
+ }
+ freelocale (locale);
+
+
+ key = g_strdup (lang);
+
+ label_own_lang = gnome_get_language_from_locale (key, key);
+ label_current_lang = gnome_get_language_from_locale (key, current_language);
+ label_untranslated = gnome_get_language_from_locale (key, "C");
+
+ /* We don't have a translation for the label in
+ * its own language? */
+ if (label_own_lang == NULL || g_strcmp0 (label_own_lang, label_untranslated) == 0) {
+ if (g_strcmp0 (label_current_lang, label_untranslated) == 0)
+ g_hash_table_insert (ht, key, g_strdup (label_untranslated));
+ else
+ g_hash_table_insert (ht, key, g_strdup (label_current_lang));
+ } else {
+ g_hash_table_insert (ht, key, g_strdup (label_own_lang));
+ }
+
+ g_free (label_own_lang);
+ g_free (label_current_lang);
+ g_free (label_untranslated);
+}
+
+static void
+insert_user_languages (GHashTable *ht)
+{
+ g_autofree char *name = NULL;
+
+ /* Add the languages used by other users on the system */
+ add_other_users_language (ht);
+
+ /* Add current locale */
+ name = cc_common_language_get_current_language ();
+ if (g_hash_table_lookup (ht, name) == NULL) {
+ insert_language (ht, name);
+ }
+}
+
+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");
+#if 0
+ /* Having 9 languages in the list initially makes the window
+ * too high. With 8 languages, we end up exactly 768 pixels
+ * high. Sadly, that means we can't affort to show English
+ * twice.
+ */
+ insert_language (ht, "en_GB.UTF-8");
+#endif
+ 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");
+
+ insert_user_languages (ht);
+
+ return ht;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-11 19:53:53 +0000