git.sur5r.net Git - glabels/blob - src/font-history-model.c

   1 /*
   2  *  font-history-model.c
   3  *  Copyright (C) 2009  Jim Evins <evins@snaught.com>.
   4  *
   5  *  This file is part of gLabels.
   6  *
   7  *  gLabels is free software: you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation, either version 3 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  gLabels is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with gLabels.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include <config.h>
  22
  23 #include "font-history-model.h"
  24
  25 #include <gconf/gconf-client.h>
  26
  27 #include <libglabels/libglabels.h>
  28 #include "marshal.h"
  29
  30
  31 #define BASE_KEY          "/apps/glabels"
  32 #define RECENT_FONTS_KEY  BASE_KEY "/recent-fonts"
  33
  34 /*========================================================*/
  35 /* Private types.                                         */
  36 /*========================================================*/
  37
  38 /** GL_FONT_HISTORY_MODEL Private fields */
  39 struct _glFontHistoryModelPrivate {
  40
  41         GConfClient *gconf_client;
  42
  43         guint        max_n;
  44 };
  45
  46 enum {
  47         CHANGED,
  48         LAST_SIGNAL
  49 };
  50
  51
  52 /*========================================================*/
  53 /* Private globals.                                       */
  54 /*========================================================*/
  55
  56 static guint signals[LAST_SIGNAL] = {0};
  57
  58
  59 /*========================================================*/
  60 /* Private function prototypes.                           */
  61 /*========================================================*/
  62
  63 static void gl_font_history_model_finalize      (GObject             *object);
  64
  65 static void conf_notify_cb                      (GConfClient         *client,
  66                                                  guint                cnxn_id,
  67                                                  GConfEntry          *entry,
  68                                                  glFontHistoryModel  *this);
  69
  70
  71 /*****************************************************************************/
  72 /* Object infrastructure.                                                    */
  73 /*****************************************************************************/
  74 G_DEFINE_TYPE (glFontHistoryModel, gl_font_history_model, G_TYPE_OBJECT);
  75
  76
  77 /*****************************************************************************/
  78 /* Class Init Function.                                                      */
  79 /*****************************************************************************/
  80 static void
  81 gl_font_history_model_class_init (glFontHistoryModelClass *class)
  82 {
  83         GObjectClass  *gobject_class = (GObjectClass *) class;
  84
  85         gl_font_history_model_parent_class = g_type_class_peek_parent (class);
  86
  87         gobject_class->finalize = gl_font_history_model_finalize;
  88
  89         signals[CHANGED] =
  90                 g_signal_new ("changed",
  91                               G_OBJECT_CLASS_TYPE (gobject_class),
  92                               G_SIGNAL_RUN_LAST,
  93                               G_STRUCT_OFFSET (glFontHistoryModelClass, changed),
  94                               NULL, NULL,
  95                               gl_marshal_VOID__VOID,
  96                               G_TYPE_NONE,
  97                               0);
  98 }
  99
 100
 101 /*****************************************************************************/
 102 /* Object Instance Init Function.                                            */
 103 /*****************************************************************************/
 104 static void
 105 gl_font_history_model_init (glFontHistoryModel *this)
 106 {
 107         this->priv = g_new0 (glFontHistoryModelPrivate, 1);
 108
 109         this->priv->gconf_client = gconf_client_get_default ();
 110
 111         g_return_if_fail (this->priv->gconf_client != NULL);
 112
 113         gconf_client_add_dir (this->priv->gconf_client,
 114                               BASE_KEY,
 115                               GCONF_CLIENT_PRELOAD_ONELEVEL,
 116                               NULL);
 117
 118         gconf_client_notify_add (this->priv->gconf_client,
 119                                  RECENT_FONTS_KEY,
 120                                  (GConfClientNotifyFunc)conf_notify_cb, this,
 121                                  NULL, NULL);
 122 }
 123
 124
 125 /*****************************************************************************/
 126 /* Finalize Method.                                                          */
 127 /*****************************************************************************/
 128 static void
 129 gl_font_history_model_finalize (GObject *object)
 130 {
 131         glFontHistoryModel    *this;
 132         GSList                *p;
 133
 134         g_return_if_fail (object && IS_GL_FONT_HISTORY_MODEL (object));
 135         this = GL_FONT_HISTORY_MODEL (object);
 136
 137         g_object_unref (G_OBJECT(this->priv->gconf_client));
 138         g_free (this->priv);
 139
 140         G_OBJECT_CLASS (gl_font_history_model_parent_class)->finalize (object);
 141 }
 142
 143
 144 /*****************************************************************************/
 145 /** New Object Generator.                                                    */
 146 /*****************************************************************************/
 147 glFontHistoryModel *
 148 gl_font_history_model_new (guint n)
 149 {
 150         glFontHistoryModel *this;
 151
 152         this = g_object_new (TYPE_GL_FONT_HISTORY_MODEL, NULL);
 153
 154         this->priv->max_n = n;
 155
 156         return this;
 157 }
 158
 159
 160 /*****************************************************************************/
 161 /* Add font to history.                                                      */
 162 /*****************************************************************************/
 163 void
 164 gl_font_history_model_add_family (glFontHistoryModel *this,
 165                                   const gchar        *family)
 166 {
 167         GSList *list = NULL;
 168         GList  *old_list;
 169         GList  *p;
 170         GSList *ps;
 171
 172         /*
 173          * Start new list with this family.
 174          */
 175         list = g_slist_append (list, (gchar *)family);
 176
 177         /*
 178          * Transfer old list to new list, ignoring any duplicate of this family
 179          */
 180         old_list = gl_font_history_model_get_family_list (this);
 181         for ( p = old_list; p; p=p->next )
 182         {
 183                 if ( lgl_str_utf8_casecmp (family, p->data) )
 184                 {
 185                         list = g_slist_append (list, p->data);
 186                 }
 187                 else
 188                 {
 189                         g_free (p->data);
 190                 }
 191         }
 192         g_list_free (old_list);
 193
 194         /*
 195          * Truncate list to maximum size
 196          */
 197         while (g_slist_length (list) > this->priv->max_n)
 198         {
 199                 ps = g_slist_last (list);
 200                 list = g_slist_remove_link (list, ps);
 201                 g_slist_free_1 (ps);
 202         }
 203
 204         /*
 205          * Update conf
 206          */
 207         gconf_client_set_list (this->priv->gconf_client,
 208                                RECENT_FONTS_KEY,
 209                                GCONF_VALUE_STRING,
 210                                list,
 211                                NULL);
 212 }
 213
 214
 215 /*****************************************************************************/
 216 /* GConf notify callback.                                                    */
 217 /*****************************************************************************/
 218 static void
 219 conf_notify_cb (GConfClient         *client,
 220                 guint                cnxn_id,
 221                 GConfEntry          *entry,
 222                 glFontHistoryModel  *this)
 223 {
 224         g_signal_emit (G_OBJECT(this), signals[CHANGED], 0);
 225 }
 226
 227
 228 /*****************************************************************************/
 229 /* Get list of font families.                                                */
 230 /*****************************************************************************/
 231 GList *
 232 gl_font_history_model_get_family_list (glFontHistoryModel *this)
 233 {
 234         GList  *list = NULL;
 235         GSList *tmp_list;
 236         GSList *p;
 237
 238         /*
 239          * Get family list.
 240          */
 241         tmp_list = gconf_client_get_list (this->priv->gconf_client,
 242                                           RECENT_FONTS_KEY,
 243                                           GCONF_VALUE_STRING,
 244                                           NULL);
 245
 246         /*
 247          * Proof read family list; transfer storage to new list.
 248          */
 249         for (p=tmp_list; p != NULL; p=p->next)
 250         {
 251                 if ( gl_font_util_is_family_installed (p->data) )
 252                 {
 253                         list = g_list_append (list, p->data);
 254                 }
 255                 else
 256                 {
 257                         g_free (p->data);
 258                 }
 259         }
 260         g_slist_free (tmp_list);
 261
 262         return list;
 263 }
 264
 265
 266 /*****************************************************************************/
 267 /* Free font family list.                                                    */
 268 /*****************************************************************************/
 269 void
 270 gl_font_history_model_free_family_list (GList *list)
 271 {
 272         GList *p;
 273
 274         for ( p = list; p; p=p->next )
 275         {
 276                 g_free (p->data);
 277         }
 278         g_list_free (list);
 279 }
 280
 281
 282
 283 /*
 284  * Local Variables:       -- emacs
 285  * mode: C                -- emacs
 286  * c-basic-offset: 8      -- emacs
 287  * tab-width: 8           -- emacs
 288  * indent-tabs-mode: nil  -- emacs
 289  * End:                   -- emacs
 290  */