[134] | 1 | /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- |
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| 2 | * |
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| 3 | * Copyright (C) 2007 William Jon McCann <mccann@jhu.edu> |
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| 4 | * |
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| 5 | * This program is free software; you can redistribute it and/or modify |
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| 6 | * it under the terms of the GNU General Public License as published by |
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| 7 | * the Free Software Foundation; either version 2 of the License, or |
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| 8 | * (at your option) any later version. |
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| 9 | * |
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| 10 | * This program is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | * GNU General Public License for more details. |
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| 14 | * |
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| 15 | * You should have received a copy of the GNU General Public License |
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| 16 | * along with this program; if not, write to the Free Software |
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| 17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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| 18 | * |
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| 19 | */ |
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| 20 | |
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| 21 | #include "config.h" |
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| 22 | |
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| 23 | #include <stdlib.h> |
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| 24 | #include <stdio.h> |
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| 25 | #include <unistd.h> |
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| 26 | #include <string.h> |
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| 27 | #include <errno.h> |
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| 28 | #include <dirent.h> |
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| 29 | #include <locale.h> |
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| 30 | #include <sys/stat.h> |
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| 31 | |
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| 32 | #include <fontconfig/fontconfig.h> |
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| 33 | |
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| 34 | #include <glib.h> |
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| 35 | #include <glib/gi18n.h> |
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| 36 | #include <glib/gstdio.h> |
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| 37 | #include <gtk/gtk.h> |
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| 38 | |
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| 39 | #include "gdm-language-chooser-widget.h" |
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| 40 | #include "gdm-chooser-widget.h" |
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| 41 | #include "gdm-languages.h" |
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| 42 | |
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| 43 | #define GDM_LANGUAGE_CHOOSER_WIDGET_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GDM_TYPE_LANGUAGE_CHOOSER_WIDGET, GdmLanguageChooserWidgetPrivate)) |
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| 44 | |
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| 45 | struct GdmLanguageChooserWidgetPrivate |
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| 46 | { |
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| 47 | guint languages_added : 1; |
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| 48 | }; |
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| 49 | |
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| 50 | static void gdm_language_chooser_widget_class_init (GdmLanguageChooserWidgetClass *klass); |
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| 51 | static void gdm_language_chooser_widget_init (GdmLanguageChooserWidget *language_chooser_widget); |
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| 52 | static void gdm_language_chooser_widget_finalize (GObject *object); |
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| 53 | |
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| 54 | G_DEFINE_TYPE (GdmLanguageChooserWidget, gdm_language_chooser_widget, GDM_TYPE_CHOOSER_WIDGET) |
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| 55 | |
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| 56 | enum { |
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| 57 | CHOOSER_LIST_TITLE_COLUMN = 0, |
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| 58 | CHOOSER_LIST_TRANSLATED_COLUMN, |
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| 59 | CHOOSER_LIST_LOCALE_COLUMN |
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| 60 | }; |
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| 61 | |
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| 62 | char * |
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| 63 | gdm_language_chooser_widget_get_current_language_name (GdmLanguageChooserWidget *widget) |
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| 64 | { |
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| 65 | char *language_name; |
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| 66 | |
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| 67 | g_return_val_if_fail (GDM_IS_LANGUAGE_CHOOSER_WIDGET (widget), NULL); |
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| 68 | |
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| 69 | language_name = gdm_chooser_widget_get_selected_item (GDM_CHOOSER_WIDGET (widget)); |
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| 70 | |
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| 71 | if (language_name == NULL) { |
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| 72 | language_name = g_strdup (setlocale (LC_MESSAGES, NULL)); |
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| 73 | } |
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| 74 | |
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| 75 | return language_name; |
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| 76 | } |
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| 77 | |
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| 78 | void |
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| 79 | gdm_language_chooser_widget_set_current_language_name (GdmLanguageChooserWidget *widget, |
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| 80 | const char *lang_name) |
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| 81 | { |
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| 82 | char *name; |
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| 83 | |
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| 84 | g_return_if_fail (GDM_IS_LANGUAGE_CHOOSER_WIDGET (widget)); |
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| 85 | |
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| 86 | if (lang_name == NULL) { |
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| 87 | gdm_chooser_widget_set_selected_item (GDM_CHOOSER_WIDGET (widget), |
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| 88 | NULL); |
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| 89 | return; |
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| 90 | } |
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| 91 | |
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| 92 | name = gdm_normalize_language_name (lang_name); |
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| 93 | gdm_chooser_widget_set_selected_item (GDM_CHOOSER_WIDGET (widget), |
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| 94 | name); |
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| 95 | |
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| 96 | g_free (name); |
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| 97 | } |
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| 98 | |
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| 99 | static void |
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| 100 | gdm_language_chooser_widget_add_language (GdmLanguageChooserWidget *widget, |
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| 101 | const char *name) |
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| 102 | { |
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| 103 | char *language; |
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| 104 | char *normalized_name; |
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| 105 | char *readable_language; |
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| 106 | char *lang_tag; |
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| 107 | char *tagged; |
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| 108 | |
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| 109 | normalized_name = gdm_normalize_language_name (name); |
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| 110 | gdm_parse_language_name (name, &lang_tag, NULL, NULL, NULL); |
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| 111 | language = gdm_get_language_from_name (normalized_name, normalized_name); |
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| 112 | readable_language = gdm_get_language_from_name (normalized_name, NULL); |
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| 113 | |
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| 114 | tagged = g_strdup_printf ("<span lang=\"%s\">%s</span>", lang_tag, language); |
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| 115 | |
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| 116 | if (language != NULL) { |
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| 117 | gdm_chooser_widget_add_item (GDM_CHOOSER_WIDGET (widget), |
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| 118 | normalized_name, |
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| 119 | NULL, |
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| 120 | tagged, |
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| 121 | readable_language, |
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| 122 | 0, |
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| 123 | FALSE, |
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| 124 | FALSE); |
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| 125 | g_free (language); |
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| 126 | } |
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| 127 | g_free (readable_language); |
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| 128 | g_free (tagged); |
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| 129 | g_free (lang_tag); |
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| 130 | g_free (normalized_name); |
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| 131 | } |
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| 132 | |
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| 133 | static gboolean |
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| 134 | language_has_font (const char *locale) |
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| 135 | { |
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| 136 | const FcCharSet *charset; |
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| 137 | FcPattern *pattern; |
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| 138 | FcObjectSet *object_set; |
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| 139 | FcFontSet *font_set; |
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| 140 | char *language_code; |
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| 141 | gboolean is_displayable; |
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| 142 | |
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| 143 | is_displayable = FALSE; |
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| 144 | pattern = NULL; |
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| 145 | object_set = NULL; |
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| 146 | font_set = NULL; |
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| 147 | |
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| 148 | gdm_parse_language_name (locale, &language_code, NULL, NULL, NULL); |
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| 149 | |
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| 150 | charset = FcLangGetCharSet ((FcChar8 *) language_code); |
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| 151 | if (!charset) { |
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| 152 | /* fontconfig does not know about this language */ |
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| 153 | is_displayable = TRUE; |
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| 154 | } else { |
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| 155 | /* see if any fonts support rendering it */ |
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| 156 | pattern = FcPatternBuild (NULL, FC_LANG, FcTypeString, language_code, NULL); |
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| 157 | |
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| 158 | if (pattern == NULL) |
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| 159 | goto done; |
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| 160 | |
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| 161 | object_set = FcObjectSetCreate (); |
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| 162 | |
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| 163 | if (object_set == NULL) |
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| 164 | goto done; |
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| 165 | |
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| 166 | font_set = FcFontList (NULL, pattern, object_set); |
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| 167 | |
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| 168 | if (font_set == NULL) |
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| 169 | goto done; |
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| 170 | |
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| 171 | is_displayable = (font_set->nfont > 0); |
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| 172 | } |
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| 173 | |
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| 174 | done: |
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| 175 | |
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| 176 | if (font_set != NULL) |
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| 177 | FcFontSetDestroy (font_set); |
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| 178 | |
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| 179 | if (object_set != NULL) |
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| 180 | FcObjectSetDestroy (object_set); |
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| 181 | |
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| 182 | if (pattern != NULL) |
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| 183 | FcPatternDestroy (pattern); |
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| 184 | |
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| 185 | g_free (language_code); |
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| 186 | return is_displayable; |
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| 187 | } |
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| 188 | |
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| 189 | static void |
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| 190 | add_available_languages (GdmLanguageChooserWidget *widget) |
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| 191 | { |
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| 192 | char **language_names; |
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| 193 | int i; |
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| 194 | |
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| 195 | language_names = gdm_get_all_language_names (); |
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| 196 | |
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| 197 | for (i = 0; language_names[i] != NULL; i++) { |
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| 198 | if (!language_has_font (language_names[i])) { |
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| 199 | continue; |
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| 200 | } |
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| 201 | gdm_language_chooser_widget_add_language (widget, |
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| 202 | language_names[i]); |
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| 203 | } |
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| 204 | |
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| 205 | g_strfreev (language_names); |
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| 206 | } |
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| 207 | |
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| 208 | static void |
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| 209 | gdm_language_chooser_widget_dispose (GObject *object) |
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| 210 | { |
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| 211 | G_OBJECT_CLASS (gdm_language_chooser_widget_parent_class)->dispose (object); |
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| 212 | } |
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| 213 | |
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| 214 | static void |
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| 215 | gdm_language_chooser_widget_realize (GtkWidget *widget) |
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| 216 | { |
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| 217 | GdmLanguageChooserWidget *chooser; |
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| 218 | |
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| 219 | chooser = GDM_LANGUAGE_CHOOSER_WIDGET (widget); |
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| 220 | |
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| 221 | GTK_WIDGET_CLASS (gdm_language_chooser_widget_parent_class)->realize (widget); |
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| 222 | |
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| 223 | if (!chooser->priv->languages_added) { |
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| 224 | add_available_languages (chooser); |
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| 225 | chooser->priv->languages_added = TRUE; |
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| 226 | } |
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| 227 | } |
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| 228 | |
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| 229 | static void |
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| 230 | gdm_language_chooser_widget_class_init (GdmLanguageChooserWidgetClass *klass) |
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| 231 | { |
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| 232 | GObjectClass *object_class = G_OBJECT_CLASS (klass); |
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| 233 | GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass); |
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| 234 | |
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| 235 | object_class->dispose = gdm_language_chooser_widget_dispose; |
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| 236 | object_class->finalize = gdm_language_chooser_widget_finalize; |
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| 237 | widget_class->realize = gdm_language_chooser_widget_realize; |
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| 238 | |
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| 239 | g_type_class_add_private (klass, sizeof (GdmLanguageChooserWidgetPrivate)); |
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| 240 | } |
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| 241 | |
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| 242 | static void |
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| 243 | gdm_language_chooser_widget_init (GdmLanguageChooserWidget *widget) |
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| 244 | { |
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| 245 | widget->priv = GDM_LANGUAGE_CHOOSER_WIDGET_GET_PRIVATE (widget); |
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| 246 | |
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| 247 | gdm_chooser_widget_set_separator_position (GDM_CHOOSER_WIDGET (widget), |
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| 248 | GDM_CHOOSER_WIDGET_POSITION_TOP); |
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| 249 | } |
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| 250 | |
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| 251 | static void |
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| 252 | gdm_language_chooser_widget_finalize (GObject *object) |
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| 253 | { |
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| 254 | GdmLanguageChooserWidget *language_chooser_widget; |
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| 255 | |
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| 256 | g_return_if_fail (object != NULL); |
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| 257 | g_return_if_fail (GDM_IS_LANGUAGE_CHOOSER_WIDGET (object)); |
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| 258 | |
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| 259 | language_chooser_widget = GDM_LANGUAGE_CHOOSER_WIDGET (object); |
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| 260 | |
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| 261 | g_return_if_fail (language_chooser_widget->priv != NULL); |
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| 262 | |
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| 263 | G_OBJECT_CLASS (gdm_language_chooser_widget_parent_class)->finalize (object); |
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| 264 | } |
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| 265 | |
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| 266 | GtkWidget * |
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| 267 | gdm_language_chooser_widget_new (void) |
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| 268 | { |
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| 269 | GObject *object; |
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| 270 | |
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| 271 | object = g_object_new (GDM_TYPE_LANGUAGE_CHOOSER_WIDGET, |
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| 272 | "inactive-text", _("_Languages:"), |
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| 273 | "active-text", _("_Language:"), |
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| 274 | NULL); |
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| 275 | |
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| 276 | return GTK_WIDGET (object); |
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| 277 | } |
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