## GnomeDesktopThumbnailFactory

GnomeDesktopThumbnailFactory

## Synopsis

    #include <libgnomeui/gnome-thumbnail.h>

                        GnomeDesktopThumbnailFactory;
    enum                GnomeDesktopThumbnailSize;
    GnomeDesktopThumbnailFactory * gnome_desktop_thumbnail_factory_new
                                                            (GnomeDesktopThumbnailSize size);
    char *              gnome_desktop_thumbnail_factory_lookup
                                                            (GnomeDesktopThumbnailFactory *factory,
                                                             const char *uri,
                                                             time_t mtime);
    gboolean            gnome_desktop_thumbnail_factory_has_valid_failed_thumbnail
                                                            (GnomeDesktopThumbnailFactory *factory,
                                                             const char *uri,
                                                             time_t mtime);
    gboolean            gnome_desktop_thumbnail_factory_can_thumbnail
                                                            (GnomeDesktopThumbnailFactory *factory,
                                                             const char *uri,
                                                             const char *mime_type,
                                                             time_t mtime);
    GdkPixbuf *         gnome_desktop_thumbnail_factory_generate_thumbnail
                                                            (GnomeDesktopThumbnailFactory *factory,
                                                             const char *uri,
                                                             const char *mime_type);
    void                gnome_desktop_thumbnail_factory_save_thumbnail
                                                            (GnomeDesktopThumbnailFactory *factory,
                                                             GdkPixbuf *thumbnail,
                                                             const char *uri,
                                                             time_t original_mtime);
    void                gnome_desktop_thumbnail_factory_create_failed_thumbnail
                                                            (GnomeDesktopThumbnailFactory *factory,
                                                             const char *uri,
                                                             time_t mtime);

## Object Hierarchy

      GObject
       +----GnomeDesktopThumbnailFactory

## Description

## Details

### GnomeDesktopThumbnailFactory

    typedef struct _GnomeDesktopThumbnailFactory GnomeDesktopThumbnailFactory;

### enum GnomeDesktopThumbnailSize

    typedef enum {
      GNOME_DESKTOP_THUMBNAIL_SIZE_NORMAL,
      GNOME_DESKTOP_THUMBNAIL_SIZE_LARGE
    } GnomeDesktopThumbnailSize;

### gnome_desktop_thumbnail_factory_new ()

    GnomeDesktopThumbnailFactory * gnome_desktop_thumbnail_factory_new
                                                            (GnomeDesktopThumbnailSize size);

Creates a new GnomeDesktopThumbnailFactory.

This function must be called on the main thread.

`size` : | The thumbnail size to use
Returns : | a new GnomeDesktopThumbnailFactory

Since 2.2

### gnome_desktop_thumbnail_factory_lookup ()

    char *              gnome_desktop_thumbnail_factory_lookup
                                                            (GnomeDesktopThumbnailFactory *factory,
                                                             const char *uri,
                                                             time_t mtime);

Tries to locate an existing thumbnail for the file specified.

Usage of this function is threadsafe.

`factory` : | a GnomeDesktopThumbnailFactory
`uri` : | the uri of a file
`mtime` : | the mtime of the file
Returns : | The absolute path of the thumbnail, or `NULL` if none exist.

Since 2.2

### gnome_desktop_thumbnail_factory_has_valid_failed_thumbnail ()

    gboolean            gnome_desktop_thumbnail_factory_has_valid_failed_thumbnail
                                                            (GnomeDesktopThumbnailFactory *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.

`factory` : | a GnomeDesktopThumbnailFactory
`uri` : | the uri of a file
`mtime` : | the mtime of the file
Returns : | TRUE if there is a failed thumbnail for the file.

Since 2.2

### gnome_desktop_thumbnail_factory_can_thumbnail ()

    gboolean            gnome_desktop_thumbnail_factory_can_thumbnail
                                                            (GnomeDesktopThumbnailFactory *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.

`factory` : | a GnomeDesktopThumbnailFactory
`uri` : | the uri of a file
`mime_type` : | the mime type of the file
`mtime` : | the mtime of the file
Returns : | TRUE if the file can be thumbnailed.

Since 2.2

### gnome_desktop_thumbnail_factory_generate_thumbnail ()

    GdkPixbuf *         gnome_desktop_thumbnail_factory_generate_thumbnail
                                                            (GnomeDesktopThumbnailFactory *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.

`factory` : | a GnomeDesktopThumbnailFactory
`uri` : | the uri of a file
`mime_type` : | the mime type of the file
Returns : | thumbnail pixbuf if thumbnailing succeeded, `NULL` otherwise.

Since 2.2

### gnome_desktop_thumbnail_factory_save_thumbnail ()

    void                gnome_desktop_thumbnail_factory_save_thumbnail
                                                            (GnomeDesktopThumbnailFactory *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.

`factory` : | a GnomeDesktopThumbnailFactory
`thumbnail` : | the thumbnail as a pixbuf
`uri` : | the uri of a file
`original_mtime` : | the modification time of the original file

Since 2.2

### gnome_desktop_thumbnail_factory_create_failed_thumbnail ()

    void                gnome_desktop_thumbnail_factory_create_failed_thumbnail
                                                            (GnomeDesktopThumbnailFactory *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.

`factory` : | a GnomeDesktopThumbnailFactory
`uri` : | the uri of a file
`mtime` : | the modification time of the file

Since 2.2