/*
 * orcawm - XCB window manager
 *
 * Written in 2020 by Lucas
 *
 * To the extent possible under law, the author(s) have dedicated all
 * copyright and related and neighboring rights to this software to the
 * public domain worldwide. This software is distributed without any
 * warranty.
 *
 * You should have received a copy of the CC0 Public Domain Dedication
 * along with this software. If not, see
 * <http://creativecommons.org/publicdomain/zero/1.0/>.
 */

#include <inttypes.h>
#include <stdio.h>

#include "err.h"
#include "wm.h"

static int
detect_other_window_manager(const struct wm *wm)
{
	return 0;
}

void
wm_setup(struct wm *wm)
{
	wm->conn = xcb_connect(NULL, &wm->screen);
	if (xcb_connection_has_error(wm->conn))
		errx(1, "Error connecting to X server");
	if (detect_other_window_manager(wm))
		errx(1, "Another window manager is already running");
}

void
wm_print_screen_info(FILE *fp, const struct wm *wm)
{
	const xcb_setup_t *setup;
	xcb_screen_t *screen;
	xcb_screen_iterator_t iter;
	int i;

	setup = xcb_get_setup(wm->conn);
	iter = xcb_setup_roots_iterator(setup);
	for (i = 0; i < wm->screen; i++)
		xcb_screen_next(&iter);

	if ((screen = iter.data) != NULL)
		fprintf(fp, "[%d] %08" PRIx32 " %" PRIu16 "x%" PRIu16 "\n",
		    wm->screen, screen->root, screen->width_in_pixels,
		    screen->height_in_pixels);
	else
		fprintf(fp, "[%d] NO_DATA\n", wm->screen);
}

void
wm_teardown(struct wm *wm)
{
	xcb_disconnect(wm->conn);
}