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Add support for client-side language bindings

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This commit adds support for language bindings on the client half of the
library.  The idea is the same as for server-side dispatchers.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Jason Ekstrand 2013-07-17 21:58:47 -05:00 • committed by Kristian Høgsberg
parent c44090908d
commit eb947e9408
2 changed files with 86 additions and 9 deletions
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90
src/wayland-client.c
View file

@ -59,6 +59,7 @@ struct wl_proxy {
uint32_t flags;
int refcount;
void *user_data;
wl_dispatcher_func_t dispatcher;
};
struct wl_global {
@ -224,6 +225,7 @@ wl_proxy_create(struct wl_proxy *factory, const struct wl_interface *interface)
proxy->object.interface = interface;
proxy->object.implementation = NULL;
proxy->dispatcher = NULL;
proxy->display = display;
proxy->queue = factory->queue;
proxy->flags = 0;
@ -251,6 +253,7 @@ wl_proxy_create_for_id(struct wl_proxy *factory,
proxy->object.interface = interface;
proxy->object.implementation = NULL;
proxy->object.id = id;
proxy->dispatcher = NULL;
proxy->display = display;
proxy->queue = factory->queue;
proxy->flags = 0;
@ -314,7 +317,7 @@ WL_EXPORT int
wl_proxy_add_listener(struct wl_proxy *proxy,
void (**implementation)(void), void *data)
{
if (proxy->object.implementation) {
if (proxy->object.implementation || proxy->dispatcher) {
fprintf(stderr, "proxy already has listener\n");
return -1;
}
@ -344,6 +347,41 @@ wl_proxy_get_listener(struct wl_proxy *proxy)
return proxy->object.implementation;
}
/** Set a proxy's listener (with dispatcher)
*
* \param proxy The proxy object
* \param dispatcher The dispatcher to be used for this proxy
* \param implementation The dispatcher-specific listener implementation
* \param data User data to be associated with the proxy
* \return 0 on success or -1 on failure
*
* Set proxy's listener to use \c dispatcher_func as its dispatcher and \c
* dispatcher_data as its dispatcher-specific implementation and its user data
* to \c data. If a listener has already been set, this function
* fails and nothing is changed.
*
* The exact details of dispatcher_data depend on the dispatcher used. This
* function is intended to be used by language bindings, not user code.
*
* \memberof wl_proxy
*/
WL_EXPORT int
wl_proxy_add_dispatcher(struct wl_proxy *proxy,
wl_dispatcher_func_t dispatcher,
const void *implementation, void *data)
{
if (proxy->object.implementation || proxy->dispatcher) {
fprintf(stderr, "proxy already has listener\n");
return -1;
}
proxy->object.implementation = implementation;
proxy->dispatcher = dispatcher;
proxy->user_data = data;
return 0;
}
/** Prepare a request to be sent to the compositor
*
* \param proxy The proxy object
@ -375,15 +413,44 @@ wl_proxy_get_listener(struct wl_proxy *proxy)
WL_EXPORT void
wl_proxy_marshal(struct wl_proxy *proxy, uint32_t opcode, ...)
{
struct wl_closure *closure;
union wl_argument args[WL_CLOSURE_MAX_ARGS];
va_list ap;
va_start(ap, opcode);
wl_argument_from_va_list(proxy->object.interface->methods[opcode].signature,
args, WL_CLOSURE_MAX_ARGS, ap);
va_end(ap);
wl_proxy_marshal_array(proxy, opcode, args);
}
/** Prepare a request to be sent to the compositor
*
* \param proxy The proxy object
* \param opcode Opcode of the request to be sent
* \param args Extra arguments for the given request
*
* Translates the request given by opcode and the extra arguments into the
* wire format and write it to the connection buffer. This version takes an
* array of the union type wl_argument.
*
* \note This is intended to be used by language bindings and not in
* non-generated code.
*
* \sa wl_proxy_marshal()
*
* \memberof wl_proxy
*/
WL_EXPORT void
wl_proxy_marshal_array(struct wl_proxy *proxy, uint32_t opcode,
union wl_argument *args)
{
struct wl_closure *closure;
pthread_mutex_lock(&proxy->display->mutex);
va_start(ap, opcode);
closure = wl_closure_vmarshal(&proxy->object, opcode, ap,
&proxy->object.interface->methods[opcode]);
va_end(ap);
closure = wl_closure_marshal(&proxy->object, opcode, args,
&proxy->object.interface->methods[opcode]);
if (closure == NULL) {
fprintf(stderr, "Error marshalling request\n");
@ -867,13 +934,18 @@ dispatch_event(struct wl_display *display, struct wl_event_queue *queue)
pthread_mutex_unlock(&display->mutex);
if (proxy->object.implementation) {
if (proxy->dispatcher) {
if (wl_debug)
wl_closure_print(closure, &proxy->object, false);
wl_closure_dispatch(closure, proxy->dispatcher,
&proxy->object, opcode);
} else if (proxy->object.implementation) {
if (wl_debug)
wl_closure_print(closure, &proxy->object, false);
wl_closure_invoke(closure, WL_CLOSURE_INVOKE_CLIENT,
&proxy->object, opcode,
proxy->user_data);
&proxy->object, opcode, proxy->user_data);
}
wl_closure_destroy(closure);

5
src/wayland-client.h
View file

@ -122,6 +122,8 @@ struct wl_event_queue;
void wl_event_queue_destroy(struct wl_event_queue *queue);
void wl_proxy_marshal(struct wl_proxy *p, uint32_t opcode, ...);
void wl_proxy_marshal_array(struct wl_proxy *p, uint32_t opcode,
union wl_argument *args);
struct wl_proxy *wl_proxy_create(struct wl_proxy *factory,
const struct wl_interface *interface);
@ -129,6 +131,9 @@ void wl_proxy_destroy(struct wl_proxy *proxy);
int wl_proxy_add_listener(struct wl_proxy *proxy,
void (**implementation)(void), void *data);
const void *wl_proxy_get_listener(struct wl_proxy *proxy);
int wl_proxy_add_dispatcher(struct wl_proxy *proxy,
wl_dispatcher_func_t dispatcher_func,
const void * dispatcher_data, void *data);
void wl_proxy_set_user_data(struct wl_proxy *proxy, void *user_data);
void *wl_proxy_get_user_data(struct wl_proxy *proxy);
uint32_t wl_proxy_get_id(struct wl_proxy *proxy);