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_SCALE_H__
28#define __GTK_SCALE_H__
29
30
31#if defined(GTK_DISABLE_SINGLE_INCLUDES) && !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
32#error "Only <gtk/gtk.h> can be included directly."
33#endif
34
35#include <gtk/gtkrange.h>
36
37
38G_BEGIN_DECLS
39
40#define GTK_TYPE_SCALE (gtk_scale_get_type ())
41#define GTK_SCALE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_SCALE, GtkScale))
42#define GTK_SCALE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_SCALE, GtkScaleClass))
43#define GTK_IS_SCALE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_SCALE))
44#define GTK_IS_SCALE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_SCALE))
45#define GTK_SCALE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_SCALE, GtkScaleClass))
46
47
48typedef struct _GtkScale GtkScale;
49typedef struct _GtkScaleClass GtkScaleClass;
50
51struct _GtkScale
52{
53 GtkRange range;
54
55 gint GSEAL (digits);
56 guint GSEAL (draw_value) : 1;
57 guint GSEAL (value_pos) : 2;
58};
59
60struct _GtkScaleClass
61{
62 GtkRangeClass parent_class;
63
64 gchar* (* format_value) (GtkScale *scale,
65 gdouble value);
66
67 void (* draw_value) (GtkScale *scale);
68
69 void (* get_layout_offsets) (GtkScale *scale,
70 gint *x,
71 gint *y);
72
73 /* Padding for future expansion */
74 void (*_gtk_reserved1) (void);
75 void (*_gtk_reserved2) (void);
76 void (*_gtk_reserved3) (void);
77};
78
79GType gtk_scale_get_type (void) G_GNUC_CONST;
80void gtk_scale_set_digits (GtkScale *scale,
81 gint digits);
82gint gtk_scale_get_digits (GtkScale *scale);
83void gtk_scale_set_draw_value (GtkScale *scale,
84 gboolean draw_value);
85gboolean gtk_scale_get_draw_value (GtkScale *scale);
86void gtk_scale_set_value_pos (GtkScale *scale,
87 GtkPositionType pos);
88GtkPositionType gtk_scale_get_value_pos (GtkScale *scale);
89
90PangoLayout * gtk_scale_get_layout (GtkScale *scale);
91void gtk_scale_get_layout_offsets (GtkScale *scale,
92 gint *x,
93 gint *y);
94
95void gtk_scale_add_mark (GtkScale *scale,
96 gdouble value,
97 GtkPositionType position,
98 const gchar *markup);
99void gtk_scale_clear_marks (GtkScale *scale);
100
101/* internal API */
102void _gtk_scale_clear_layout (GtkScale *scale);
103void _gtk_scale_get_value_size (GtkScale *scale,
104 gint *width,
105 gint *height);
106gchar * _gtk_scale_format_value (GtkScale *scale,
107 gdouble value);
108
109G_END_DECLS
110
111#endif /* __GTK_SCALE_H__ */
112