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/* HSV color selector for GTK+
*
* Copyright (C) 1999 The Free Software Foundation
*
* Authors: Simon Budig <Simon.Budig@unix-ag.org> (original code)
* Federico Mena-Quintero <federico@gimp.org> (cleanup for GTK+)
* Jonathan Blandford <jrb@redhat.com> (cleanup for GTK+)
*
* 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/.
*/

#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
#error "Only <gtk/gtk.h> can be included directly."
#endif

#ifndef __GTK_HSV_H__
#define __GTK_HSV_H__

#include <gtk/gtkwidget.h>

G_BEGIN_DECLS

#define GTK_TYPE_HSV (gtk_hsv_get_type ())
#define GTK_HSV(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_HSV, GtkHSV))
#define GTK_HSV_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_HSV, GtkHSVClass))
#define GTK_IS_HSV(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_HSV))
#define GTK_IS_HSV_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_HSV))
#define GTK_HSV_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_HSV, GtkHSVClass))


typedef struct _GtkHSV GtkHSV;
typedef struct _GtkHSVPrivate GtkHSVPrivate;
typedef struct _GtkHSVClass GtkHSVClass;

struct _GtkHSV
{
  GtkWidget parent_instance;

  /*< private >*/
  GtkHSVPrivate *priv;
};

struct _GtkHSVClass
{
  GtkWidgetClass parent_class;

  /* Notification signals */
  void (* changed) (GtkHSV *hsv);

  /* Keybindings */
  void (* move) (GtkHSV *hsv,
                    GtkDirectionType type);

  /* Padding for future expansion */
  void (*_gtk_reserved1) (void);
  void (*_gtk_reserved2) (void);
  void (*_gtk_reserved3) (void);
  void (*_gtk_reserved4) (void);
};


GType gtk_hsv_get_type (void) G_GNUC_CONST;
GtkWidget* gtk_hsv_new (void);
void gtk_hsv_set_color (GtkHSV *hsv,
double h,
double s,
double v);
void gtk_hsv_get_color (GtkHSV *hsv,
gdouble *h,
gdouble *s,
gdouble *v);
void gtk_hsv_set_metrics (GtkHSV *hsv,
gint size,
gint ring_width);
void gtk_hsv_get_metrics (GtkHSV *hsv,
gint *size,
gint *ring_width);
gboolean gtk_hsv_is_adjusting (GtkHSV *hsv);

/* Convert colors between the RGB and HSV color spaces */
void gtk_hsv_to_rgb (gdouble h,
gdouble s,
gdouble v,
gdouble *r,
gdouble *g,
gdouble *b);
void gtk_rgb_to_hsv (gdouble r,
gdouble g,
gdouble b,
gdouble *h,
gdouble *s,
gdouble *v);

G_END_DECLS

#endif /* __GTK_HSV_H__ */
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