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e_photo_cache_add_photo_source()
and remove it with
e_photo_cache_remove_photo_source()
. When EPhotoCache needs a photo
for an email address it will invoke e_photo_source_get_photo()
on all
available
void e_photo_source_get_photo (,
EPhotoSource *photo_sourceconst
,gchar *email_address,
GCancellable *cancellable,
GAsyncReadyCallback callback);
gpointer user_data
Asynchronously searches for a photo for email_address
.
When the operation is finished, callback
will be called. You can then
call e_photo_source_get_photo_finish()
to get the result of the operation.
gboolean e_photo_source_get_photo_finish (,
EPhotoSource *photo_source,
GAsyncResult *result,
GInputStream **out_stream,
gint *out_priority);
GError **error
Finishes the operation started with e_photo_source_get_photo()
.
If a match was found, a out_stream
return location, and a suggested priority
value for the match is returned through the out_priority
return location.
You can use the out_priority
value to rank this result among other
G_PRIORITY_DEFAULT
, but
may be G_PRIORITY_LOW
if the result is a fallback image.
If no match was found, the out_stream
return location is set to NULL
out_priority
return location will remain unset).
The return value indicates whether the search completed successfully,
not whether a match was found. If an error occurred, the function will
set error
and return FALSE
struct EPhotoSourceInterface { GTypeInterface parent_interface; void (*get_photo) (EPhotoSource *photo_source, const gchar *email_address, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer user_data); gboolean (*get_photo_finish) (EPhotoSource *photo_source, GAsyncResult *result, GInputStream **out_stream, gint *out_priority, GError **error); };