Fusion:Object

From DirectFBWiki

Objects are implemented on top of fusion reactors and reference counters.

Your object structure must have a FusionObject structure as its first member (which is typically called object), like this:

 struct _MyObject
 {
     FusionObject   object;
     /* your object-specific data here */
 }
 typedef struct _MyOject MyObject;

By putting FUSION_OBJECT_METHODS macro in your header, you get a bunch of inline functions for your object. You tell it the type name of your object structure and also a prefix (e.g. “my_object”) that will be prepended to all the function names. The functions declared are:

function	description
my_object_attach	attach to the object reactor
my_object_detach	detach from the object reactor
my_object_attach_global	global attach to the object reactor
my_object_detach_global	global detach from the object reactor
my_object_dispatch	dispatch via the object reactor
my_object_ref	add a local reference to the object
my_object_unref	remove a local reference from the object
my_object_link	add a global reference and store the object pointer (usually in another object)
my_object_unlink	remove the object link and the global reference that was added for it
my_object_globalize	add a global reference and remove a local one, i.e. detach the object from the fusionee

TODO: Describe how to implement and use objects...