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#include <stdlib.h>
#include <wlr/util/addon.h>
#include "log.h"
#include "sway/scene_descriptor.h"
struct scene_descriptor {
void *data;
struct wlr_addon addon;
};
static const struct wlr_addon_interface addon_interface;
static struct scene_descriptor *scene_node_get_descriptor(
struct wlr_scene_node *node, enum sway_scene_descriptor_type type) {
struct wlr_addon *addon = wlr_addon_find(&node->addons, (void *)type, &addon_interface);
if (!addon) {
return NULL;
}
struct scene_descriptor *desc = wl_container_of(addon, desc, addon);
return desc;
}
static void descriptor_destroy(struct scene_descriptor *desc) {
wlr_addon_finish(&desc->addon);
free(desc);
}
void *scene_descriptor_try_get(struct wlr_scene_node *node,
enum sway_scene_descriptor_type type) {
struct scene_descriptor *desc = scene_node_get_descriptor(node, type);
if (!desc) {
return NULL;
}
return desc->data;
}
void scene_descriptor_destroy(struct wlr_scene_node *node,
enum sway_scene_descriptor_type type) {
struct scene_descriptor *desc = scene_node_get_descriptor(node, type);
descriptor_destroy(desc);
}
static void addon_handle_destroy(struct wlr_addon *addon) {
struct scene_descriptor *desc = wl_container_of(addon, desc, addon);
descriptor_destroy(desc);
}
static const struct wlr_addon_interface addon_interface = {
.name = "sway_scene_descriptor",
.destroy = addon_handle_destroy,
};
bool scene_descriptor_assign(struct wlr_scene_node *node,
enum sway_scene_descriptor_type type, void *data) {
struct scene_descriptor *desc = calloc(1, sizeof(*desc));
if (!desc) {
sway_log(SWAY_ERROR, "Could not allocate a scene descriptor");
return false;
}
wlr_addon_init(&desc->addon, &node->addons, (void *)type, &addon_interface);
desc->data = data;
return true;
}
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