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GtkIconCache: Add api to find if directories are empty

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This will help in not creating structs for tons of empty
directories.
This commit is contained in:
Matthias Clasen 2014-06-20 12:11:22 -04:00
parent 5925f9eeb4
commit b4d12fff4e
2 changed files with 44 additions and 0 deletions
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42
gtk/gtkiconcache.c
View File

@ -300,6 +300,48 @@ _gtk_icon_cache_get_icon_flags (GtkIconCache *cache,
return GET_UINT16 (cache->buffer, image_offset + 2);
}
gboolean
_gtk_icon_cache_has_icons (GtkIconCache *cache,
const gchar *directory)
{
int directory_index;
guint32 hash_offset, n_buckets;
guint32 chain_offset;
guint32 image_list_offset, n_images;
int i, j;
directory_index = get_directory_index (cache, directory);
if (directory_index == -1)
return FALSE;
hash_offset = GET_UINT32 (cache->buffer, 4);
n_buckets = GET_UINT32 (cache->buffer, hash_offset);
for (i = 0; i < n_buckets; i++)
{
chain_offset = GET_UINT32 (cache->buffer, hash_offset + 4 + 4 * i);
while (chain_offset != 0xffffffff)
{
guint32 name_offset = GET_UINT32 (cache->buffer, chain_offset + 4);
image_list_offset = GET_UINT32 (cache->buffer, chain_offset + 8);
n_images = GET_UINT32 (cache->buffer, image_list_offset);
for (j = 0; j < n_images; j++)
{
if (GET_UINT16 (cache->buffer, image_list_offset + 4 + 8 * j) ==
directory_index)
return TRUE;
}
chain_offset = GET_UINT32 (cache->buffer, chain_offset);
}
}
return FALSE;
}
void
_gtk_icon_cache_add_icons (GtkIconCache *cache,
const gchar *directory,

2
gtk/gtkiconcache.h
View File

@ -44,6 +44,8 @@ gboolean _gtk_icon_cache_has_icon (GtkIconCache *cache,
gboolean _gtk_icon_cache_has_icon_in_directory (GtkIconCache *cache,
const gchar *icon_name,
const gchar *directory);
gboolean _gtk_icon_cache_has_icons (GtkIconCache *cache,
const gchar *directory);
void _gtk_icon_cache_add_icons (GtkIconCache *cache,
const gchar *directory,
GHashTable *hash_table);