/* The GIMP -- an image manipulation program
 * Copyright (C) 1995 Spencer Kimball and Peter Mattis
 *
 * Gradient editor module copyight (C) 1996-1997 Federico Mena Quintero
 * federico@nuclecu.unam.mx
 *
 * 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.
 */
#ifndef __GRADIENT_H__
#define __GRADIENT_H__

typedef struct _gradient_t gradient_t;

/*  global variables  */
extern GSList * gradients_list;
extern gint     num_gradients;

void         gradients_init                   (gint        no_data);
void         gradients_free                   (void);

gradient_t * gradients_get_standard_gradient  (void);

gradient_t * gradient_list_get_gradient       (GSList     *list,
					       gchar      *name);
gint         gradient_list_get_gradient_index (GSList     *list,
					       gradient_t *gradient);

void         gradient_get_color_at            (gradient_t *gradient,
					       gdouble     pos,
					       gdouble    *r,
					       gdouble    *g,
					       gdouble    *b,
					       gdouble    *a);

#endif  /* __GRADIENT_H__ */