/*
 *
 *  This file is part of the XForms library package.
 *
 * XForms is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1, or
 * (at your option) any later version.
 *
 * XForms 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with XForms; see the file COPYING.  If not, write to
 * the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
 * MA 02111-1307, USA.
 *
 */


/*
 *  $Id: rgb_db.c,v 1.8 2008/09/22 22:31:27 jtt Exp $
 *
 *  Copyright (c) 1999-2002 T.C. Zhao
 *
 *  search the rgb.txt database for a specific color
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "include/forms.h"
#include "flimage.h"


/***************************************
 * This function is retained for compatibility reasons only.
 * It returns 1 always.
 ***************************************/

int
fl_init_RGBdatabase( const char * f  FL_UNUSED_ARG )
{
    return 1;
}


/***************************************
 * A new implementation from Rouben Rostamian
 * Changed to make it work with machines that a color depth of 32 bit
 * but only 24 planes. It's a bit slow because each time the two colors
 * are queried but I did have any better idea at the moment how to figure
 * out how many bits the red, green and blue members of the XColor
 * structure have in every possible case and this looked like the
 * safest method...                 JTT
 ***************************************/

int fl_lookup_RGBcolor( const char * colname,
						int *        r,
						int *        g,
						int *        b )
{
    XColor xc;
	XColor w;

    if (    XParseColor( fl_display, fl_state[ fl_vmode ].colormap,
						 "rgb:ffff/ffff/ffff",  &w ) == 0 
		 || XParseColor( fl_display, fl_state[ fl_vmode ].colormap,
						 colname,  &xc ) == 0 )
		return -1;

	*r = ( ( xc.red   << 8 ) - 1 ) / w.red;
	*g = ( ( xc.green << 8 ) - 1 ) / w.green;
	*b = ( ( xc.blue  << 8 ) - 1 ) / w.blue;

    return 0;
}
