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.h>
  28 #include "font-util.h"
  29 #include "marshal.h"
  30
  31
  32 #define BASE_KEY          "/apps/glabels"
  33 #define RECENT_FONTS_KEY  BASE_KEY "/recent-fonts"
  34
  35
  36 /*========================================================*/
  37 /* Private types.                                         */
  38 /*========================================================*/
  39
  40 /** GL_FONT_HISTORY_MODEL Private fields */
  41 struct _glFontHistoryModelPrivate {
  42
  43         GConfClient *gconf_client;
  44
  45         guint        max_n;
  46 };
  47
  48 enum {
  49         CHANGED,
  50         LAST_SIGNAL
  51 };
  52
  53
  54 /*========================================================*/
  55 /* Private globals.                                       */
  56 /*========================================================*/
  57
  58 static guint signals[LAST_SIGNAL] = {0};
  59
  60
  61 /*========================================================*/
  62 /* Private function prototypes.                           */
  63 /*========================================================*/
  64
  65 static void gl_font_history_model_finalize      (GObject             *object);
  66
  67 static void conf_notify_cb                      (GConfClient         *client,
  68                                                  guint                cnxn_id,
  69                                                  GConfEntry          *entry,
  70                                                  glFontHistoryModel  *this);
  71
  72
  73 /*****************************************************************************/
  74 /* Object infrastructure.                                                    */
  75 /*****************************************************************************/
  76 G_DEFINE_TYPE (glFontHistoryModel, gl_font_history_model, G_TYPE_OBJECT);
  77
  78
  79 /*****************************************************************************/
  80 /* Class Init Function.                                                      */
  81 /*****************************************************************************/
  82 static void
  83 gl_font_history_model_class_init (glFontHistoryModelClass *class)
  84 {
  85         GObjectClass  *gobject_class = (GObjectClass *) class;
  86
  87         gl_font_history_model_parent_class = g_type_class_peek_parent (class);
  88
  89         gobject_class->finalize = gl_font_history_model_finalize;
  90
  91         signals[CHANGED] =
  92                 g_signal_new ("changed",
  93                               G_OBJECT_CLASS_TYPE (gobject_class),
  94                               G_SIGNAL_RUN_LAST,
  95                               G_STRUCT_OFFSET (glFontHistoryModelClass, changed),
  96                               NULL, NULL,
  97                               gl_marshal_VOID__VOID,
  98                               G_TYPE_NONE,
  99                               0);
 100 }
 101
 102
 103 /*****************************************************************************/
 104 /* Object Instance Init Function.                                            */
 105 /*****************************************************************************/
 106 static void
 107 gl_font_history_model_init (glFontHistoryModel *this)
 108 {
 109         this->priv = g_new0 (glFontHistoryModelPrivate, 1);
 110
 111         this->priv->gconf_client = gconf_client_get_default ();
 112
 113         g_return_if_fail (this->priv->gconf_client != NULL);
 114
 115         gconf_client_add_dir (this->priv->gconf_client,
 116                               BASE_KEY,
 117                               GCONF_CLIENT_PRELOAD_ONELEVEL,
 118                               NULL);
 119
 120         gconf_client_notify_add (this->priv->gconf_client,
 121                                  RECENT_FONTS_KEY,
 122                                  (GConfClientNotifyFunc)conf_notify_cb, this,
 123                                  NULL, NULL);
 124 }
 125
 126
 127 /*****************************************************************************/
 128 /* Finalize Method.                                                          */
 129 /*****************************************************************************/
 130 static void
 131 gl_font_history_model_finalize (GObject *object)
 132 {
 133         glFontHistoryModel    *this;
 134
 135         g_return_if_fail (object && IS_GL_FONT_HISTORY_MODEL (object));
 136         this = GL_FONT_HISTORY_MODEL (object);
 137
 138         g_object_unref (G_OBJECT(this->priv->gconf_client));
 139         g_free (this->priv);
 140
 141         G_OBJECT_CLASS (gl_font_history_model_parent_class)->finalize (object);
 142 }
 143
 144
 145 /*****************************************************************************/
 146 /** New Object Generator.                                                    */
 147 /*****************************************************************************/
 148 glFontHistoryModel *
 149 gl_font_history_model_new (guint n)
 150 {
 151         glFontHistoryModel *this;
 152
 153         this = g_object_new (TYPE_GL_FONT_HISTORY_MODEL, NULL);
 154
 155         this->priv->max_n = n;
 156
 157         return this;
 158 }
 159
 160
 161 /*****************************************************************************/
 162 /* Add font to history.                                                      */
 163 /*****************************************************************************/
 164 void
 165 gl_font_history_model_add_family (glFontHistoryModel *this,
 166                                   const gchar        *family)
 167 {
 168         GSList *list = NULL;
 169         GList  *old_list;
 170         GList  *p;
 171         GSList *ps;
 172
 173         /*
 174          * Start new list with this family.
 175          */
 176         list = g_slist_append (list, (gchar *)family);
 177
 178         /*
 179          * Transfer old list to new list, ignoring any duplicate of this family
 180          */
 181         old_list = gl_font_history_model_get_family_list (this);
 182         for ( p = old_list; p; p=p->next )
 183         {
 184                 if ( lgl_str_utf8_casecmp (family, p->data) )
 185                 {
 186                         list = g_slist_append (list, p->data);
 187                 }
 188                 else
 189                 {
 190                         g_free (p->data);
 191                 }
 192         }
 193         g_list_free (old_list);
 194
 195         /*
 196          * Truncate list to maximum size
 197          */
 198         while (g_slist_length (list) > this->priv->max_n)
 199         {
 200                 ps = g_slist_last (list);
 201                 list = g_slist_remove_link (list, ps);
 202                 g_slist_free_1 (ps);
 203         }
 204
 205         /*
 206          * Update conf
 207          */
 208         gconf_client_set_list (this->priv->gconf_client,
 209                                RECENT_FONTS_KEY,
 210                                GCONF_VALUE_STRING,
 211                                list,
 212                                NULL);
 213 }
 214
 215
 216 /*****************************************************************************/
 217 /* GConf notify callback.                                                    */
 218 /*****************************************************************************/
 219 static void
 220 conf_notify_cb (GConfClient         *client,
 221                 guint                cnxn_id,
 222                 GConfEntry          *entry,
 223                 glFontHistoryModel  *this)
 224 {
 225         g_signal_emit (G_OBJECT(this), signals[CHANGED], 0);
 226 }
 227
 228
 229 /*****************************************************************************/
 230 /* Get list of font families.                                                */
 231 /*****************************************************************************/
 232 GList *
 233 gl_font_history_model_get_family_list (glFontHistoryModel *this)
 234 {
 235         GList  *list = NULL;
 236         GSList *tmp_list;
 237         GSList *p;
 238
 239         /*
 240          * Get family list.
 241          */
 242         tmp_list = gconf_client_get_list (this->priv->gconf_client,
 243                                           RECENT_FONTS_KEY,
 244                                           GCONF_VALUE_STRING,
 245                                           NULL);
 246
 247         /*
 248          * Proof read family list; transfer storage to new list.
 249          */
 250         for (p=tmp_list; p != NULL; p=p->next)
 251         {
 252                 if ( gl_font_util_is_family_installed (p->data) )
 253                 {
 254                         list = g_list_append (list, p->data);
 255                 }
 256                 else
 257                 {
 258                         g_free (p->data);
 259                 }
 260         }
 261         g_slist_free (tmp_list);
 262
 263         return list;
 264 }
 265
 266
 267 /*****************************************************************************/
 268 /* Free font family list.                                                    */
 269 /*****************************************************************************/
 270 void
 271 gl_font_history_model_free_family_list (GList *list)
 272 {
 273         GList *p;
 274
 275         for ( p = list; p; p=p->next )
 276         {
 277                 g_free (p->data);
 278         }
 279         g_list_free (list);
 280 }
 281
 282
 283
 284 /*
 285  * Local Variables:       -- emacs
 286  * mode: C                -- emacs
 287  * c-basic-offset: 8      -- emacs
 288  * tab-width: 8           -- emacs
 289  * indent-tabs-mode: nil  -- emacs
 290  * End:                   -- emacs
 291  */