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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
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __HISTOGRAM_H__
#define __HISTOGRAM_H__
#include "pixel_region.h"
#define HISTOGRAM_VALUE 0
#define HISTOGRAM_RED 1
#define HISTOGRAM_GREEN 2
#define HISTOGRAM_BLUE 3
#define HISTOGRAM_ALPHA 4
/* Histogram information function */
typedef struct _Histogram Histogram;
struct _Histogram
{
/* The calling procedure is responsible for showing this widget */
GtkWidget *histogram_widget;
/* Don't touch this :) */
void * private_part;
};
typedef double Values[256];
typedef Values HistogramValues[5];
typedef void (* HistogramInfoFunc) (PixelRegion *, PixelRegion *, HistogramValues, void *);
typedef void (* HistogramRangeCallback) (int, int, HistogramValues, void *);
/* Histogram functions */
Histogram * histogram_create (int, int, HistogramRangeCallback, void *);
void histogram_free (Histogram *);
void histogram_update (Histogram *, GimpDrawable *, HistogramInfoFunc, void *);
void histogram_range (Histogram *, int, int);
void histogram_channel (Histogram *, int);
HistogramValues *histogram_values (Histogram *);
#endif /* __HISTOGRAM_H__ */
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