gimp_thumb_init ()

gboolean    gimp_thumb_init                 (const gchar *creator,
                                             const gchar *thumb_basedir);

This function initializes the thumbnail system. It must be called before any other functions from libgimpthumb are used. You may call it more than once if you want to change the thumb_basedir but if you do that, you should make sure that no thread is still using the library. Apart from this function, libgimpthumb is multi-thread safe.

The creator string must be 7bit ASCII and should contain the name of the software that creates the thumbnails. It is used to handle thumbnail creation failures. See the spec for more details.

Usually you will pass NULL for thumb_basedir. Thumbnails will then be stored in the user's personal thumbnail directory as defined in the spec. If you wish to use libgimpthumb to store application-specific thumbnails, you can specify a different base directory here.

gimp_thumb_name_from_uri ()

gchar*      gimp_thumb_name_from_uri        (const gchar *uri,
                                             GimpThumbSize size);

Creates the name of the thumbnail file of the specified size that belongs to an image file located at the given uri.

gimp_thumb_find_thumb ()

gchar*      gimp_thumb_find_thumb           (const gchar *uri,
                                             GimpThumbSize *size);

This function attempts to locate a thumbnail for the given url. First it tries the size that is stored at size. If no thumbnail of that size is found, it will look for a larger thumbnail, then falling back to a smaller size. If a thumbnail is found, it's size is written to the variable pointer to by size and the file location is returned.

gimp_thumb_file_test ()

GimpThumbFileType gimp_thumb_file_test      (const gchar *filename,
                                             gint64 *mtime,
                                             gint64 *size,
                                             gint *err_no);

This is a convenience and portability wrapper around stat(). It checks if the given filename exists and returns modification time and file size in 64bit integer values.

gimp_thumb_ensure_thumb_dir ()

gboolean    gimp_thumb_ensure_thumb_dir     (GimpThumbSize size,
                                             GError **error);

This function checks if the directory that is required to store thumbnails for a particular size exist and attempts to create it if necessary.

You shouldn't have to call this function directly since gimp_thumbnail_save_thumb() and gimp_thumbnail_save_failure() will do this for you.

gimp_thumb_get_thumb_dir ()

const gchar* gimp_thumb_get_thumb_dir       (GimpThumbSize size);

Retrieve the name of a thumbnail folder for a specific size. The returned pointer will become invalid if gimp_thumb_init() is used again. It must not be changed or freed.