GnomeThumbnail

struct GnomeThumbnailFactory

struct GnomeThumbnailFactory {

	GObject parent;
	
	GnomeThumbnailFactoryPrivate *priv;
};

enum GnomeThumbnailSize

typedef enum {
  GNOME_THUMBNAIL_SIZE_NORMAL,
  GNOME_THUMBNAIL_SIZE_LARGE
} GnomeThumbnailSize;

struct GnomeThumbnailFactoryClass

struct GnomeThumbnailFactoryClass {

	GObjectClass parent;
};

gnome_thumbnail_factory_new ()

GnomeThumbnailFactory* gnome_thumbnail_factory_new
                                            (GnomeThumbnailSize size);

Creates a new GnomeThumbnailFactory.

This function must be called on the main thread.

gnome_thumbnail_factory_lookup ()

char*       gnome_thumbnail_factory_lookup  (GnomeThumbnailFactory *factory,
                                             const char *uri,
                                             time_t mtime);

Tries to locate an existing thumbnail for the file specified.

Usage of this function is threadsafe.

gnome_thumbnail_factory_has_valid_failed_thumbnail ()

gboolean    gnome_thumbnail_factory_has_valid_failed_thumbnail
                                            (GnomeThumbnailFactory *factory,
                                             const char *uri,
                                             time_t mtime);

Tries to locate an failed thumbnail for the file specified. Writing and looking for failed thumbnails is important to avoid to try to thumbnail e.g. broken images several times.

Usage of this function is threadsafe.

gnome_thumbnail_factory_can_thumbnail ()

gboolean    gnome_thumbnail_factory_can_thumbnail
                                            (GnomeThumbnailFactory *factory,
                                             const char *uri,
                                             const char *mime_type,
                                             time_t mtime);

Returns TRUE if this GnomeIconFactory can (at least try) to thumbnail this file. Thumbnails or files with failed thumbnails won't be thumbnailed.

Usage of this function is threadsafe.

gnome_thumbnail_factory_generate_thumbnail ()

GdkPixbuf*  gnome_thumbnail_factory_generate_thumbnail
                                            (GnomeThumbnailFactory *factory,
                                             const char *uri,
                                             const char *mime_type);

Tries to generate a thumbnail for the specified file. If it succeeds it returns a pixbuf that can be used as a thumbnail.

Usage of this function is threadsafe.

gnome_thumbnail_factory_save_thumbnail ()

void        gnome_thumbnail_factory_save_thumbnail
                                            (GnomeThumbnailFactory *factory,
                                             GdkPixbuf *thumbnail,
                                             const char *uri,
                                             time_t original_mtime);

Saves thumbnail at the right place. If the save fails a failed thumbnail is written.

Usage of this function is threadsafe.

gnome_thumbnail_factory_create_failed_thumbnail ()

void        gnome_thumbnail_factory_create_failed_thumbnail
                                            (GnomeThumbnailFactory *factory,
                                             const char *uri,
                                             time_t mtime);

Creates a failed thumbnail for the file so that we don't try to re-thumbnail the file later.

Usage of this function is threadsafe.

gnome_thumbnail_scale_down_pixbuf ()

GdkPixbuf*  gnome_thumbnail_scale_down_pixbuf
                                            (GdkPixbuf *pixbuf,
                                             int dest_width,
                                             int dest_height);

Scales the pixbuf to the desired size. This function is a lot faster than gdk-pixbuf when scaling down by large amounts.

gnome_thumbnail_has_uri ()

gboolean    gnome_thumbnail_has_uri         (GdkPixbuf *pixbuf,
                                             const char *uri);

Returns whether the thumbnail has the correct uri embedded in the Thumb::URI option in the png.

gnome_thumbnail_is_valid ()

gboolean    gnome_thumbnail_is_valid        (GdkPixbuf *pixbuf,
                                             const char *uri,
                                             time_t mtime);

Returns whether the thumbnail has the correct uri and mtime embedded in the png options.

gnome_thumbnail_md5 ()

char*       gnome_thumbnail_md5             (const char *uri);

Calculates the MD5 checksum of the uri. This can be useful if you want to manually handle thumbnail files.

gnome_thumbnail_path_for_uri ()

char*       gnome_thumbnail_path_for_uri    (const char *uri,
                                             GnomeThumbnailSize size);

Returns the filename that a thumbnail of size size for uri would have.