git.maemo.org Git - modest/blob - src/modest-icon-factory.c

   1 /* modest-icon-factory.c */
   2
   3 #include <string.h>
   4 #include "modest-icon-factory.h"
   5
   6 static GHashTable *icon_hash = NULL;
   7
   8 static
   9 gboolean equal_func (const gchar *s1, const gchar *s2)
  10 {
  11         return strcmp (s1, s2) == 0;
  12 }
  13
  14 static
  15 void free_pixbuf (GdkPixbuf *pixbuf)
  16 {
  17         if (pixbuf)
  18                 g_object_unref (G_OBJECT(pixbuf));
  19 }
  20
  21
  22 void
  23 modest_icon_factory_init   (void)
  24 {
  25         if (icon_hash) {
  26                 g_warning ("modest_icon_factory_init "
  27                            "should be called only once");
  28                 return;
  29         }
  30
  31         icon_hash = g_hash_table_new_full (g_str_hash,
  32                                            (GEqualFunc)equal_func,
  33                                            (GDestroyNotify)g_free,
  34                                            (GDestroyNotify)free_pixbuf);
  35 }
  36
  37
  38 void
  39 modest_icon_factory_uninit (void)
  40 {
  41         if (!icon_hash) {
  42                 g_warning ("modest_icon_factory_uninit "
  43                            "must only be called with initialized "
  44                            "ModestIconFactories");
  45                 return;
  46         }
  47
  48         g_hash_table_destroy (icon_hash);
  49         icon_hash = NULL;
  50 }
  51
  52
  53
  54 GdkPixbuf*
  55 modest_icon_factory_get_icon (const gchar *name)
  56 {
  57         GError *err = NULL;
  58         GdkPixbuf *pixbuf;
  59         gpointer orig_key;
  60
  61         if (!icon_hash) {
  62                 g_warning ("ModestIconFactory must be initialized first");
  63                 return NULL;
  64         }
  65
  66         /* is it already in the hashtable?
  67          * note: this can be NULL
  68          */
  69         if (!g_hash_table_lookup_extended (icon_hash, name, &orig_key,
  70                                            (gpointer*)&pixbuf)) {
  71                 pixbuf = gdk_pixbuf_new_from_file (name, &err);
  72                 if (!pixbuf) {
  73                         g_warning (err->message);
  74                         g_error_free (err);
  75                 }
  76                 /* if we cannot find it, we still insert, so we get the error
  77                  * only once */
  78                 g_hash_table_insert (icon_hash, g_strdup(name),
  79                                      (gpointer)pixbuf);
  80         }
  81         return pixbuf;
  82 }