grim/gobjects-101

Move to macros add a subclass and instance method
draft
2021-06-23, Gary Kramlich
e21f4ddf7902
Move to macros add a subclass and instance method
#include <stdio.h>
#include "bicycle.h"
G_DEFINE_TYPE(GobjectsBicycle, gobjects_bicycle, G_TYPE_OBJECT)
/*******************************************************************************
* Default Implementations
******************************************************************************/
static void
gobjects_bicycle_default_ring_bell(GobjectsBicycle *bicycle) {
printf("%p is ringing it's bell\n", bicycle);
}
/*******************************************************************************
* GObject Implementation
******************************************************************************/
static void
gobjects_bicycle_init(GobjectsBicycle *bicycle) {
}
static void
gobjects_bicycle_class_init(GobjectsBicycleClass *klass) {
klass->ring_bell = gobjects_bicycle_default_ring_bell;
}
/*******************************************************************************
* Public API
******************************************************************************/
GobjectsBicycle *
gobjects_bicycle_new(void) {
return g_object_new(GOBJECTS_TYPE_BICYCLE, NULL);
}
void
gobjects_bicycle_ring_bell(GobjectsBicycle *bicycle) {
GobjectsBicycleClass *klass = NULL;
g_return_if_fail(GOBJECTS_IS_BICYCLE(bicycle));
klass = GOBJECTS_BICYCLE_GET_CLASS(bicycle);
if(klass != NULL && klass->ring_bell != NULL) {
klass->ring_bell(bicycle);
}
}