Pileus Git - ~andy/gtk/blob - gtk/gtkadjustment.h

   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_ADJUSTMENT_H__
  28 #define __GTK_ADJUSTMENT_H__
  29
  30
  31 #include <gdk/gdk.h>
  32 #include <gtk/gtkobject.h>
  33
  34 G_BEGIN_DECLS
  35
  36 #define GTK_TYPE_ADJUSTMENT                  (gtk_adjustment_get_type ())
  37 #define GTK_ADJUSTMENT(obj)                  (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_ADJUSTMENT, GtkAdjustment))
  38 #define GTK_ADJUSTMENT_CLASS(klass)          (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_ADJUSTMENT, GtkAdjustmentClass))
  39 #define GTK_IS_ADJUSTMENT(obj)               (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_ADJUSTMENT))
  40 #define GTK_IS_ADJUSTMENT_CLASS(klass)       (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_ADJUSTMENT))
  41 #define GTK_ADJUSTMENT_GET_CLASS(obj)        (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_ADJUSTMENT, GtkAdjustmentClass))
  42
  43
  44 typedef struct _GtkAdjustment       GtkAdjustment;
  45 typedef struct _GtkAdjustmentClass  GtkAdjustmentClass;
  46
  47 struct _GtkAdjustment
  48 {
  49   GtkObject parent_instance;
  50
  51   gdouble lower;
  52   gdouble upper;
  53   gdouble value;
  54   gdouble step_increment;
  55   gdouble page_increment;
  56   gdouble page_size;
  57 };
  58
  59 struct _GtkAdjustmentClass
  60 {
  61   GtkObjectClass parent_class;
  62
  63   void (* changed)       (GtkAdjustment *adjustment);
  64   void (* value_changed) (GtkAdjustment *adjustment);
  65
  66   /* Padding for future expansion */
  67   void (*_gtk_reserved1) (void);
  68   void (*_gtk_reserved2) (void);
  69   void (*_gtk_reserved3) (void);
  70   void (*_gtk_reserved4) (void);
  71 };
  72
  73
  74 GType      gtk_adjustment_get_type              (void) G_GNUC_CONST;
  75 GtkObject* gtk_adjustment_new                   (gdouble          value,
  76                                                  gdouble          lower,
  77                                                  gdouble          upper,
  78                                                  gdouble          step_increment,
  79                                                  gdouble          page_increment,
  80                                                  gdouble          page_size);
  81 void       gtk_adjustment_changed               (GtkAdjustment   *adjustment);
  82 void       gtk_adjustment_value_changed         (GtkAdjustment   *adjustment);
  83 void       gtk_adjustment_clamp_page            (GtkAdjustment   *adjustment,
  84                                                  gdouble          lower,
  85                                                  gdouble          upper);
  86 gdouble    gtk_adjustment_get_value             (GtkAdjustment   *adjustment);
  87 void       gtk_adjustment_set_value             (GtkAdjustment   *adjustment,
  88                                                  gdouble          value);
  89
  90 G_END_DECLS
  91
  92 #endif /* __GTK_ADJUSTMENT_H__ */