1/* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
3 *
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.
8 *
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.
13 *
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.
18 */
19
20/*
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/.
25 */
26
27#ifndef GTK_DISABLE_DEPRECATED
28
29#ifndef __GTK_CURVE_H__
30#define __GTK_CURVE_H__
31
32
33#include <gtk/gtkdrawingarea.h>
34
35
36G_BEGIN_DECLS
37
38#define GTK_TYPE_CURVE (gtk_curve_get_type ())
39#define GTK_CURVE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_CURVE, GtkCurve))
40#define GTK_CURVE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_CURVE, GtkCurveClass))
41#define GTK_IS_CURVE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_CURVE))
42#define GTK_IS_CURVE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_CURVE))
43#define GTK_CURVE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CURVE, GtkCurveClass))
44
45
46typedef struct _GtkCurve GtkCurve;
47typedef struct _GtkCurveClass GtkCurveClass;
48
49
50struct _GtkCurve
51{
52 GtkDrawingArea graph;
53
54 gint cursor_type;
55 gfloat min_x;
56 gfloat max_x;
57 gfloat min_y;
58 gfloat max_y;
59 GdkPixmap *pixmap;
60 GtkCurveType curve_type;
61 gint height; /* (cached) graph height in pixels */
62 gint grab_point; /* point currently grabbed */
63 gint last;
64
65 /* (cached) curve points: */
66 gint num_points;
67 GdkPoint *point;
68
69 /* control points: */
70 gint num_ctlpoints; /* number of control points */
71 gfloat (*ctlpoint)[2]; /* array of control points */
72};
73
74struct _GtkCurveClass
75{
76 GtkDrawingAreaClass parent_class;
77
78 void (* curve_type_changed) (GtkCurve *curve);
79
80 /* Padding for future expansion */
81 void (*_gtk_reserved1) (void);
82 void (*_gtk_reserved2) (void);
83 void (*_gtk_reserved3) (void);
84 void (*_gtk_reserved4) (void);
85};
86
87
88GType gtk_curve_get_type (void) G_GNUC_CONST;
89GtkWidget* gtk_curve_new (void);
90void gtk_curve_reset (GtkCurve *curve);
91void gtk_curve_set_gamma (GtkCurve *curve, gfloat gamma_);
92void gtk_curve_set_range (GtkCurve *curve,
93 gfloat min_x, gfloat max_x,
94 gfloat min_y, gfloat max_y);
95void gtk_curve_get_vector (GtkCurve *curve,
96 int veclen, gfloat vector[]);
97void gtk_curve_set_vector (GtkCurve *curve,
98 int veclen, gfloat vector[]);
99void gtk_curve_set_curve_type (GtkCurve *curve, GtkCurveType type);
100
101
102G_END_DECLS
103
104#endif /* __GTK_CURVE_H__ */
105
106#endif /* GTK_DISABLE_DEPRECATED */
107