1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GTK+ Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
28 * NOTE this widget is considered too specialized/little-used for
29 * GTK+, and will in the future be moved to some other package. If
30 * your application needs this widget, feel free to use it, as the
31 * widget does work and is useful in some applications; it's just not
32 * of general interest. However, we are not accepting new features for
33 * the widget, and it will eventually move out of the GTK+
37 #ifndef __GTK_CURVE_H__
38 #define __GTK_CURVE_H__
42 #include <gtk/gtkdrawingarea.h>
46 #endif /* __cplusplus */
49 #define GTK_TYPE_CURVE (gtk_curve_get_type ())
50 #define GTK_CURVE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_CURVE, GtkCurve))
51 #define GTK_CURVE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_CURVE, GtkCurveClass))
52 #define GTK_IS_CURVE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_CURVE))
53 #define GTK_IS_CURVE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_CURVE))
54 #define GTK_CURVE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CURVE, GtkCurveClass))
57 typedef struct _GtkCurve GtkCurve;
58 typedef struct _GtkCurveClass GtkCurveClass;
71 GtkCurveType curve_type;
72 gint height; /* (cached) graph height in pixels */
73 gint grab_point; /* point currently grabbed */
76 /* (cached) curve points: */
81 gint num_ctlpoints; /* number of control points */
82 gfloat (*ctlpoint)[2]; /* array of control points */
87 GtkDrawingAreaClass parent_class;
89 void (* curve_type_changed) (GtkCurve *curve);
91 /* Padding for future expansion */
92 void (*_gtk_reserved1) (void);
93 void (*_gtk_reserved2) (void);
94 void (*_gtk_reserved3) (void);
95 void (*_gtk_reserved4) (void);
99 GType gtk_curve_get_type (void) G_GNUC_CONST;
100 GtkWidget* gtk_curve_new (void);
101 void gtk_curve_reset (GtkCurve *curve);
102 void gtk_curve_set_gamma (GtkCurve *curve, gfloat gamma_);
103 void gtk_curve_set_range (GtkCurve *curve,
104 gfloat min_x, gfloat max_x,
105 gfloat min_y, gfloat max_y);
106 void gtk_curve_get_vector (GtkCurve *curve,
107 int veclen, gfloat vector[]);
108 void gtk_curve_set_vector (GtkCurve *curve,
109 int veclen, gfloat vector[]);
110 void gtk_curve_set_curve_type (GtkCurve *curve, GtkCurveType type);
115 #endif /* __cplusplus */
118 #endif /* __GTK_CURVE_H__ */