/*
 * Schism Tracker - a cross-platform Impulse Tracker clone
 * copyright (c) 2003-2005 Storlek <storlek@rigelseven.com>
 * copyright (c) 2005-2008 Mrs. Brisby <mrs.brisby@nimh.org>
 * copyright (c) 2009 Storlek & Mrs. Brisby
 * copyright (c) 2010-2012 Storlek
 * URL: http://schismtracker.org/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#include "headers.h"

#include "sdlmain.h"
#include "it.h"
#include "osdefs.h"

#include <X11/Xproto.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <X11/Xutil.h>
#include <X11/Xos.h>

#ifdef USE_XKB
# include <X11/XKBlib.h>
#endif

static int virgin = 1;
static unsigned int delay, rate;

#ifdef USE_XKB
static XkbDescPtr us_kb_map;
#endif

static void _key_info_setup(void)
{
	Display *dpy;
	SDL_SysWMinfo info;

	if (!virgin) return;
	virgin = 0;

	memset(&info, 0, sizeof(info));
	SDL_VERSION(&info.version);
	if (SDL_GetWMInfo(&info)) {
		if (info.info.x11.lock_func)
			info.info.x11.lock_func();
		dpy = info.info.x11.display;
	} else {
		dpy = NULL;
	}
	if (!dpy) {
		dpy = XOpenDisplay(NULL);
		if (!dpy) return;
		memset(&info, 0, sizeof(info));
	}

#ifdef USE_XKB
	/* Dear X11,
		You suck.
	Sincerely, Storlek */
	char blank[] = "";
	char symbols[] = "+us(basic)";
	XkbComponentNamesRec rec = {
		.symbols = symbols,
		.keymap = blank,
		.keycodes = blank,
		.types = blank,
		.compat = blank,
		.geometry = blank,
	};
	us_kb_map = XkbGetKeyboardByName(dpy, XkbUseCoreKbd, &rec,
			XkbGBN_AllComponentsMask, XkbGBN_AllComponentsMask, False);
	if (!us_kb_map)
		log_appendf(3, "Warning: XKB support missing or broken; keyjamming might not work right");

	if (XkbGetAutoRepeatRate(dpy, XkbUseCoreKbd, &delay, &rate)) {
		if (info.info.x11.unlock_func)
			info.info.x11.unlock_func();
		return;
	}
#else
	log_appendf(3, "Warning: XKB support not compiled in; keyjamming might not work right");
#endif

	/* eh... */
	delay = 125;
	rate = 30;

	if (info.info.x11.unlock_func)
		info.info.x11.unlock_func();
}

unsigned int key_repeat_rate(void)
{
	_key_info_setup();
	return rate;
}

unsigned int key_repeat_delay(void)
{
	_key_info_setup();
	return delay;
}

#ifdef USE_XKB
int key_scancode_lookup(int k, int def)
{
	static unsigned int d;
	KeySym sym;

	if (us_kb_map != NULL &&
			XkbTranslateKeyCode(us_kb_map, k, 0, &d, &sym)) {
		return sym;
	}
	return def;
}
#endif