include/gtkslider.h

   1 /* gAlan - Graphical Audio Language
   2  * Copyright (C) 1999 Tony Garnock-Jones
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program 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
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19 #ifndef __GTK_SLIDER_H__
  20 #define __GTK_SLIDER_H__
  21
  22 #include <gdk/gdk.h>
  23 #include <gtk/gtkadjustment.h>
  24 #include <gtk/gtkwidget.h>
  25
  26 #ifdef __cplusplus
  27 extern "C" {
  28 #endif
  29
  30 #define GTK_SLIDER(obj)         GTK_CHECK_CAST(obj, gtk_slider_get_type(), GtkSlider)
  31 #define GTK_SLIDER_CLASS(klass) GTK_CHECK_CLASS_CAST(klass, gtk_slider_get_type(), GtkSliderClass)
  32 #define GTK_IS_SLIDER(obj)      GTK_CHECK_TYPE(obj, gtk_slider_get_type())
  33
  34 typedef struct _GtkSlider        GtkSlider;
  35 typedef struct _GtkSliderClass   GtkSliderClass;
  36
  37 struct _GtkSlider {
  38   GtkWidget widget;
  39
  40   /* update policy (GTK_UPDATE_[CONTINUOUS/DELAYED/DISCONTINUOUS]) */
  41   guint policy : 2;
  42
  43   /* State of widget (to do with user interaction) */
  44   guint8 state;
  45   gint saved_x, saved_y;
  46
  47   /* ID of update timer, or 0 if none */
  48   guint32 timer;
  49
  50   /* Pixmap for slider */
  51   GdkPixmap *pixmap;
  52   /* vertical size of slider - travel distance in pixels */
  53   gint size;
  54
  55   /* Old values from adjustment stored so we know when something changes */
  56   gfloat old_value;
  57   gfloat old_lower;
  58   gfloat old_upper;
  59
  60   /* The adjustment object that stores the data for this slider */
  61   GtkAdjustment *adjustment;
  62 };
  63
  64 struct _GtkSliderClass
  65 {
  66   GtkWidgetClass parent_class;
  67 };
  68
  69 extern GtkWidget *gtk_slider_new(GtkAdjustment *adjustment, gint size);
  70 extern guint gtk_slider_get_type(void);
  71
  72 extern GtkAdjustment *gtk_slider_get_adjustment(GtkSlider *slider);
  73 extern void gtk_slider_set_update_policy(GtkSlider *slider, GtkUpdateType  policy);
  74
  75 extern void gtk_slider_set_adjustment(GtkSlider *slider, GtkAdjustment *adjustment);
  76
  77 #ifdef __cplusplus
  78 }
  79 #endif
  80
  81 #endif