// SPDX-License-Identifier: GPL-2.0-only

#include <assert.h>
#include <wlr/types/wlr_scene.h>
#include "common/scene-helpers.h"

struct wlr_scene_rect *
lab_wlr_scene_get_rect(struct wlr_scene_node *node)
{
	assert(node->type == WLR_SCENE_NODE_RECT);
	return (struct wlr_scene_rect *)node;
}

struct wlr_scene_tree *
lab_scene_tree_from_node(struct wlr_scene_node *node)
{
	assert(node->type == WLR_SCENE_NODE_TREE);
	return (struct wlr_scene_tree *)node;
}

struct wlr_surface *
lab_wlr_surface_from_node(struct wlr_scene_node *node)
{
	struct wlr_scene_buffer *buffer;
	struct wlr_scene_surface *scene_surface;

	if (node && node->type == WLR_SCENE_NODE_BUFFER) {
		buffer = wlr_scene_buffer_from_node(node);
		scene_surface = wlr_scene_surface_from_buffer(buffer);
		if (scene_surface) {
			return scene_surface->surface;
		}
	}
	return NULL;
}

struct wlr_scene_node *
lab_wlr_scene_get_prev_node(struct wlr_scene_node *node)
{
	assert(node);
	struct wlr_scene_node *prev;
	prev = wl_container_of(node->link.prev, node, link);
	if (&prev->link == &node->parent->children) {
		return NULL;
	}
	return prev;
}