/* GTK - The GIMP Toolkit

 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald

 *

 * This library 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 of the License, or (at your option) any later version.

 *

 * This library 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 this library; if not, write to the

 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 * Boston, MA 02111-1307, USA.

 */

/*

 * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS

 * file for a list of people on the GTK+ Team.  See the ChangeLog

 * files for a list of changes.  These files are distributed with

 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.

 */

#ifndef GTK_DISABLE_DEPRECATED

#ifndef __GTK_CURVE_H__

#define __GTK_CURVE_H__

#include <gtk/gtkdrawingarea.h>

G_BEGIN_DECLS

#define GTK_TYPE_CURVE                  (gtk_curve_get_type ())

#define GTK_CURVE(obj)                  (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_CURVE, GtkCurve))

#define GTK_CURVE_CLASS(klass)          (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_CURVE, GtkCurveClass))

#define GTK_IS_CURVE(obj)               (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_CURVE))

#define GTK_IS_CURVE_CLASS(klass)       (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_CURVE))

#define GTK_CURVE_GET_CLASS(obj)        (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CURVE, GtkCurveClass))

typedef struct _GtkCurve	GtkCurve;

typedef struct _GtkCurveClass	GtkCurveClass;

struct _GtkCurve

{

  GtkDrawingArea graph;

  gint cursor_type;

  gfloat min_x;

  gfloat max_x;

  gfloat min_y;

  gfloat max_y;

  GdkPixmap *pixmap;

  GtkCurveType curve_type;

  gint height;                  /* (cached) graph height in pixels */

  gint grab_point;              /* point currently grabbed */

  gint last;

  /* (cached) curve points: */

  gint num_points;

  GdkPoint *point;

  /* control points: */

  gint num_ctlpoints;           /* number of control points */

  gfloat (*ctlpoint)[2];        /* array of control points */

};

struct _GtkCurveClass

{

  GtkDrawingAreaClass parent_class;

  void (* curve_type_changed) (GtkCurve *curve);

  /* Padding for future expansion */

  void (*_gtk_reserved1) (void);

  void (*_gtk_reserved2) (void);

  void (*_gtk_reserved3) (void);

  void (*_gtk_reserved4) (void);

};

GType		gtk_curve_get_type	(void) G_GNUC_CONST;

GtkWidget*	gtk_curve_new		(void);

void		gtk_curve_reset		(GtkCurve *curve);

void		gtk_curve_set_gamma	(GtkCurve *curve, gfloat gamma_);

void		gtk_curve_set_range	(GtkCurve *curve,

					 gfloat min_x, gfloat max_x,

					 gfloat min_y, gfloat max_y);

void		gtk_curve_get_vector	(GtkCurve *curve,

					 int veclen, gfloat vector[]);

void		gtk_curve_set_vector	(GtkCurve *curve,

					 int veclen, gfloat vector[]);

void		gtk_curve_set_curve_type (GtkCurve *curve, GtkCurveType type);

G_END_DECLS

#endif /* __GTK_CURVE_H__ */

#endif /* GTK_DISABLE_DEPRECATED */