curves.h 2.75 KB
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/* The GIMP -- an 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
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 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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 */
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#ifndef __GIMP_CURVES_TOOL_H__
#define __GIMP_CURVES_TOOL_H__


#include "gimpimagemaptool.h"
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#define SMOOTH 0
#define GFREE  1
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#define GIMP_TYPE_CURVES_TOOL            (gimp_curves_tool_get_type ())
#define GIMP_CURVES_TOOL(obj)            (GTK_CHECK_CAST ((obj), GIMP_TYPE_CURVES_TOOL, GimpCurvesTool))
#define GIMP_IS_CURVES_TOOL(obj)         (GTK_CHECK_TYPE ((obj), GIMP_TYPE_CURVES_TOOL))
#define GIMP_CURVES_TOOL_CLASS(klass)    (GTK_CHECK_CLASS_CAST ((klass), GIMP_TYPE_CURVES_TOOL, GimpCurvesToolClass))
#define GIMP_IS_CURVES_TOOL_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_CURVES_TOOL))


typedef struct _GimpCurvesTool      GimpCurvesTool;
typedef struct _GimpCurvesToolClass GimpCurvesToolClass;

struct _GimpCurvesTool
{
  GimpImageMapTool  parent_instance;
};

struct _GimpCurvesToolClass
{
  GimpImageMapToolClass  parent_class;
};


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typedef struct _CurvesDialog CurvesDialog;
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struct _CurvesDialog
{
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  GtkWidget    *shell;

  GtkWidget    *channel_menu;
  GtkWidget    *xrange;
  GtkWidget    *yrange;
  GtkWidget    *graph;
  GdkPixmap    *pixmap;
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  GtkWidget    *curve_type_menu;
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  GimpDrawable *drawable;
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  ImageMap     *image_map;
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  gint          color;
  gint          channel;
  gboolean      preview;
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  gint          grab_point;
  gint          last;
  gint          leftmost;
  gint          rightmost;
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  gint          curve_type[5];
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  gint          points[5][17][2];
  guchar        curve[5][256];
  gint          col_value[5];
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  gint          cursor_ind_height;
  gint          cursor_ind_width;
  gint          cursor_ind_ascent;
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  GimpLut      *lut;
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};

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void       gimp_curves_tool_register (Gimp *gimp);
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GtkType    gimp_curves_tool_get_type (void);

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void    curves_dialog_hide     (void);
void    curves_free            (void);
gfloat  curves_lut_func        (CurvesDialog *cd,
				gint          nchannels,
				gint          channel,
				gfloat        value);
void    curves_calculate_curve (CurvesDialog *cd);
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#endif  /*  __CURVES_H__  */