Pileus Git - ~andy/gtk/blob - gtk/gtkscrollbar.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  * Copyright (C) 2001 Red Hat, Inc.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  */
  20
  21 /*
  22  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  23  * file for a list of people on the GTK+ Team.  See the ChangeLog
  24  * files for a list of changes.  These files are distributed with
  25  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  26  */
  27
  28 #include <config.h>
  29 #include "gtkscrollbar.h"
  30 #include "gtkintl.h"
  31 #include "gtkprivate.h"
  32 #include "gtkalias.h"
  33
  34 static void gtk_scrollbar_class_init (GtkScrollbarClass *klass);
  35 static void gtk_scrollbar_init       (GtkScrollbar      *scrollbar);
  36 static void gtk_scrollbar_style_set  (GtkWidget         *widget,
  37                                       GtkStyle          *previous);
  38
  39 static gpointer parent_class;
  40
  41 GType
  42 gtk_scrollbar_get_type (void)
  43 {
  44   static GType scrollbar_type = 0;
  45
  46   if (!scrollbar_type)
  47     {
  48       static const GTypeInfo scrollbar_info =
  49       {
  50         sizeof (GtkScrollbarClass),
  51         NULL,           /* base_init */
  52         NULL,           /* base_finalize */
  53         (GClassInitFunc) gtk_scrollbar_class_init,
  54         NULL,           /* class_finalize */
  55         NULL,           /* class_data */
  56         sizeof (GtkScrollbar),
  57         0,              /* n_preallocs */
  58         (GInstanceInitFunc) gtk_scrollbar_init,
  59         NULL,           /* value_table */
  60       };
  61
  62       scrollbar_type =
  63         g_type_register_static (GTK_TYPE_RANGE, I_("GtkScrollbar"),
  64                                 &scrollbar_info, G_TYPE_FLAG_ABSTRACT);
  65     }
  66
  67   return scrollbar_type;
  68 }
  69
  70 static void
  71 gtk_scrollbar_class_init (GtkScrollbarClass *class)
  72 {
  73   GtkWidgetClass *widget_class;
  74
  75   widget_class = GTK_WIDGET_CLASS (class);
  76
  77   parent_class = g_type_class_peek_parent (class);
  78
  79   widget_class->style_set = gtk_scrollbar_style_set;
  80
  81   gtk_widget_class_install_style_property (widget_class,
  82                                            g_param_spec_int ("min-slider-length",
  83                                                              P_("Minimum Slider Length"),
  84                                                              P_("Minimum length of scrollbar slider"),
  85                                                              0,
  86                                                              G_MAXINT,
  87                                                              21,
  88                                                              GTK_PARAM_READABLE));
  89
  90   gtk_widget_class_install_style_property (widget_class,
  91                                            g_param_spec_boolean ("fixed-slider-length",
  92                                                                  P_("Fixed slider size"),
  93                                                                  P_("Don't change slider size, just lock it to the minimum length"),
  94                                                                  FALSE,
  95
  96                                                                  GTK_PARAM_READABLE));
  97
  98   gtk_widget_class_install_style_property (widget_class,
  99                                            g_param_spec_boolean ("has-backward-stepper",
 100                                                                  P_("Backward stepper"),
 101                                                                  P_("Display the standard backward arrow button"),
 102                                                                  TRUE,
 103
 104                                                                  GTK_PARAM_READABLE));
 105
 106     gtk_widget_class_install_style_property (widget_class,
 107                                              g_param_spec_boolean ("has-forward-stepper",
 108                                                                    P_("Forward stepper"),
 109                                                                    P_("Display the standard forward arrow button"),
 110                                                                    TRUE,
 111
 112                                                                    GTK_PARAM_READABLE));
 113
 114   gtk_widget_class_install_style_property (widget_class,
 115                                            g_param_spec_boolean ("has-secondary-backward-stepper",
 116                                                                  P_("Secondary backward stepper"),
 117                                                                  P_("Display a second backward arrow button on the opposite end of the scrollbar"),
 118                                                                  FALSE,
 119
 120                                                                  GTK_PARAM_READABLE));
 121
 122     gtk_widget_class_install_style_property (widget_class,
 123                                              g_param_spec_boolean ("has-secondary-forward-stepper",
 124                                                                    P_("Secondary forward stepper"),
 125                                                                    P_("Display a secondary forward arrow button on the opposite end of the scrollbar"),
 126                                                                    FALSE,
 127
 128                                                                    GTK_PARAM_READABLE));
 129 }
 130
 131 static void
 132 gtk_scrollbar_init (GtkScrollbar *scrollbar)
 133 {
 134   GtkRange *range;
 135
 136   range = GTK_RANGE (scrollbar);
 137 }
 138
 139 static void
 140 gtk_scrollbar_style_set  (GtkWidget *widget,
 141                           GtkStyle  *previous)
 142 {
 143   gint slider_length;
 144   gboolean fixed_size;
 145   gboolean has_a, has_b, has_c, has_d;
 146   GtkRange *range;
 147
 148   range = GTK_RANGE (widget);
 149
 150   gtk_widget_style_get (widget,
 151                         "min-slider-length", &slider_length,
 152                         "fixed-slider-length", &fixed_size,
 153                         "has-backward-stepper", &has_a,
 154                         "has-secondary-forward-stepper", &has_b,
 155                         "has-secondary-backward-stepper", &has_c,
 156                         "has-forward-stepper", &has_d,
 157                         NULL);
 158
 159   range->min_slider_size = slider_length;
 160   range->slider_size_fixed = fixed_size;
 161
 162   range->has_stepper_a = has_a;
 163   range->has_stepper_b = has_b;
 164   range->has_stepper_c = has_c;
 165   range->has_stepper_d = has_d;
 166
 167   (* GTK_WIDGET_CLASS (parent_class)->style_set) (widget, previous);
 168 }
 169
 170 #define __GTK_SCROLLBAR_C__
 171 #include "gtkaliasdef.c"