/* GIMP - The GNU Image Manipulation Program
 * Copyright (C) 1995 Spencer Kimball and Peter Mattis
 *
 * 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 __GIMP_CURVES_TOOL_H__
#define __GIMP_CURVES_TOOL_H__


#include "gimpimagemaptool.h"


#define GIMP_TYPE_CURVES_TOOL            (gimp_curves_tool_get_type ())
#define GIMP_CURVES_TOOL(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_CURVES_TOOL, GimpCurvesTool))
#define GIMP_IS_CURVES_TOOL(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_CURVES_TOOL))
#define GIMP_CURVES_TOOL_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_CURVES_TOOL, GimpCurvesToolClass))
#define GIMP_IS_CURVES_TOOL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_CURVES_TOOL))


typedef struct _GimpCurvesTool      GimpCurvesTool;
typedef struct _GimpCurvesToolClass GimpCurvesToolClass;

struct _GimpCurvesTool
{
  GimpImageMapTool      parent_instance;

  Curves               *curves;
  GimpLut              *lut;

  /* dialog */
  gboolean              color;
  gboolean              alpha;
  GimpHistogramChannel  channel;

  gint                  selected;
  gint                  last;
  gint                  leftmost;
  gint                  rightmost;
  gint                  col_value[5];
  gboolean              grabbed;

  GimpHistogram        *hist;

  GtkWidget            *channel_menu;
  GtkWidget            *xrange;
  GtkWidget            *yrange;
  GtkWidget            *graph;
  GtkWidget            *curve_type;

  gint                  cursor_x;
  gint                  cursor_y;
  PangoLayout          *xpos_layout;
  PangoLayout          *cursor_layout;
  PangoRectangle        cursor_rect;
};

struct _GimpCurvesToolClass
{
  GimpImageMapToolClass  parent_class;
};


void    gimp_curves_tool_register (GimpToolRegisterCallback  callback,
                                   gpointer                  data);

GType   gimp_curves_tool_get_type (void) G_GNUC_CONST;


#endif  /*  __CURVES_H__  */