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implement surface frame

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The surface frame callback lets a window know when it is a good time to show the
next frame if it is animating. In particular, this callback is used by
weston-simple-shm to throttle drawing.
This commit is contained in:
Tony Crisci 2017-08-09 15:58:41 -04:00 • committed by Drew DeVault
parent 87fe13a9fa
commit 8306f46dfb
3 changed files with 56 additions and 1 deletions
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37
types/wlr_surface.c
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@ -23,9 +23,36 @@ static void surface_damage(struct wl_client *client,
wlr_log(L_DEBUG, "TODO: surface damage");
}
static void destroy_frame_callback(struct wl_resource *resource) {
struct wlr_frame_callback *cb = wl_resource_get_user_data(resource);
wl_list_remove(&cb->link);
free(cb);
}
static void surface_frame(struct wl_client *client,
struct wl_resource *resource, uint32_t callback) {
wlr_log(L_DEBUG, "TODO: surface frame");
struct wlr_frame_callback *cb;
struct wlr_surface *surface = wl_resource_get_user_data(resource);
cb = malloc(sizeof *cb);
if (cb == NULL) {
wl_resource_post_no_memory(resource);
return;
}
cb->resource = wl_resource_create(client, &wl_callback_interface, 1,
callback);
if (cb->resource == NULL) {
free(cb);
wl_resource_post_no_memory(resource);
return;
}
wl_resource_set_implementation(cb->resource, NULL, cb,
destroy_frame_callback);
wl_list_insert(surface->frame_callback_list.prev, &cb->link);
}
static void surface_set_opaque_region(struct wl_client *client,
@ -103,6 +130,13 @@ static void destroy_surface(struct wl_resource *resource) {
struct wlr_surface *surface = wl_resource_get_user_data(resource);
wl_signal_emit(&surface->signals.destroy, surface);
wlr_texture_destroy(surface->texture);
struct wlr_frame_callback *cb, *next;
wl_list_for_each_safe(cb, next, &surface->frame_callback_list, link) {
wl_resource_destroy(cb->resource);
}
free(surface);
}
@ -113,6 +147,7 @@ struct wlr_surface *wlr_surface_create(struct wl_resource *res,
surface->resource = res;
wl_signal_init(&surface->signals.commit);
wl_signal_init(&surface->signals.destroy);
wl_list_init(&surface->frame_callback_list);
wl_resource_set_implementation(res, &surface_interface,
surface, destroy_surface);