#include <wlr/types/wlr_output_management_v1.h>

static void outputmgrapply(struct wl_listener *listener, void *data);
static void outputmgrapplyortest(struct wlr_output_configuration_v1 *config, bool test);
static void outputmgrtest(struct wl_listener *listener, void *data);

static struct wlr_output_manager_v1 *output_mgr;

static struct wl_listener output_mgr_apply = {.notify = outputmgrapply};
static struct wl_listener output_mgr_test = {.notify = outputmgrtest};

outputmgrapply(struct wl_listener *listener, void *data)
{
	struct wlr_output_configuration_v1 *config = data;
	outputmgrapplyortest(config, false);
}
// apply_output_config
void
outputmgrapplyortest(struct wlr_output_configuration_v1 *config, bool test)
{
	struct wlr_output_configuration_head_v1 *config_head;
	bool ok = true;
	wl_list_for_each(config_head, &config->heads, link) {
		struct wlr_output *wlr_output = config_head->state.output;
		wlr_output_enable(wlr_output, config_head->state.enabled);
		if (config_head->state.enabled) {
			if (config_head->state.mode)
				wlr_output_set_mode(wlr_output, config_head->state.mode);
			else
				wlr_output_set_custom_mode(wlr_output,
						config_head->state.custom_mode.width,
						config_head->state.custom_mode.height,
						config_head->state.custom_mode.refresh);
			wlr_output_layout_move(output_layout, wlr_output,
					config_head->state.x, config_head->state.y);
			wlr_output_set_transform(wlr_output, config_head->state.transform);
			wlr_output_set_scale(wlr_output, config_head->state.scale);
		}
		if (test) {
			ok &= wlr_output_test(wlr_output);
			wlr_output_rollback(wlr_output);
		} else
			ok &= wlr_output_commit(wlr_output);
	}
	if (ok) {
		wlr_output_configuration_v1_send_succeeded(config);
		if (!test)
			updatemons();
	}
	else
		wlr_output_configuration_v1_send_failed(config);
	wlr_output_configuration_v1_destroy(config);
}
void
outputmgrtest(struct wl_listener *listener, void *data)
{
	struct wlr_output_configuration_v1 *config = data;
	outputmgrapplyortest(config, true);
}
void

	output_mgr = wlr_output_manager_v1_create(dpy);
	wl_signal_add(&output_mgr->events.apply, &output_mgr_apply);
	wl_signal_add(&output_mgr->events.test, &output_mgr_test);

	struct wlr_output_configuration_v1 *config =
		wlr_output_configuration_v1_create();

		struct wlr_output_configuration_head_v1 *config_head =
			wlr_output_configuration_head_v1_create(config, m->wlr_output);

		config_head->state.enabled = m->wlr_output->enabled;
		config_head->state.mode = m->wlr_output->current_mode;
		config_head->state.x = m->m.x;
		config_head->state.y = m->m.y;

	wlr_output_manager_v1_set_configuration(output_mgr, config);