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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