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 "gtkalias.h"
  32
  33 static void gtk_scrollbar_class_init (GtkScrollbarClass *klass);
  34 static void gtk_scrollbar_init       (GtkScrollbar      *scrollbar);
  35 static void gtk_scrollbar_style_set  (GtkWidget         *widget,
  36                                       GtkStyle          *previous);
  37
  38 static gpointer parent_class;
  39
  40 GType
  41 gtk_scrollbar_get_type (void)
  42 {
  43   static GType scrollbar_type = 0;
  44
  45   if (!scrollbar_type)
  46     {
  47       static const GTypeInfo scrollbar_info =
  48       {
  49         sizeof (GtkScrollbarClass),
  50         NULL,           /* base_init */
  51         NULL,           /* base_finalize */
  52         (GClassInitFunc) gtk_scrollbar_class_init,
  53         NULL,           /* class_finalize */
  54         NULL,           /* class_data */
  55         sizeof (GtkScrollbar),
  56         0,              /* n_preallocs */
  57         (GInstanceInitFunc) gtk_scrollbar_init,
  58         NULL,           /* value_table */
  59       };
  60
  61       scrollbar_type =
  62         g_type_register_static (GTK_TYPE_RANGE, "GtkScrollbar",
  63                                 &scrollbar_info, G_TYPE_FLAG_ABSTRACT);
  64     }
  65
  66   return scrollbar_type;
  67 }
  68
  69 static void
  70 gtk_scrollbar_class_init (GtkScrollbarClass *class)
  71 {
  72   GtkWidgetClass *widget_class;
  73
  74   widget_class = GTK_WIDGET_CLASS (class);
  75
  76   parent_class = g_type_class_peek_parent (class);
  77
  78   widget_class->style_set = gtk_scrollbar_style_set;
  79
  80   gtk_widget_class_install_style_property (widget_class,
  81                                            g_param_spec_int ("min-slider-length",
  82                                                              P_("Minimum Slider Length"),
  83                                                              P_("Minimum length of scrollbar slider"),
  84                                                              0,
  85                                                              G_MAXINT,
  86                                                              21,
  87                                                              G_PARAM_READABLE));
  88
  89   gtk_widget_class_install_style_property (widget_class,
  90                                            g_param_spec_boolean ("fixed-slider-length",
  91                                                                  P_("Fixed slider size"),
  92                                                                  P_("Don't change slider size, just lock it to the minimum length"),
  93                                                                  FALSE,
  94
  95                                                                  G_PARAM_READABLE));
  96
  97   gtk_widget_class_install_style_property (widget_class,
  98                                            g_param_spec_boolean ("has-backward-stepper",
  99                                                                  P_("Backward stepper"),
 100                                                                  P_("Display the standard backward arrow button"),
 101                                                                  TRUE,
 102
 103                                                                  G_PARAM_READABLE));
 104
 105     gtk_widget_class_install_style_property (widget_class,
 106                                              g_param_spec_boolean ("has-forward-stepper",
 107                                                                    P_("Forward stepper"),
 108                                                                    P_("Display the standard forward arrow button"),
 109                                                                    TRUE,
 110
 111                                                                    G_PARAM_READABLE));
 112
 113   gtk_widget_class_install_style_property (widget_class,
 114                                            g_param_spec_boolean ("has-secondary-backward-stepper",
 115                                                                  P_("Secondary backward stepper"),
 116                                                                  P_("Display a second backward arrow button on the opposite end of the scrollbar"),
 117                                                                  FALSE,
 118
 119                                                                  G_PARAM_READABLE));
 120
 121     gtk_widget_class_install_style_property (widget_class,
 122                                              g_param_spec_boolean ("has-secondary-forward-stepper",
 123                                                                    P_("Secondary forward stepper"),
 124                                                                    P_("Display a secondary forward arrow button on the opposite end of the scrollbar"),
 125                                                                    FALSE,
 126
 127                                                                    G_PARAM_READABLE));
 128 }
 129
 130 static void
 131 gtk_scrollbar_init (GtkScrollbar *scrollbar)
 132 {
 133   GtkRange *range;
 134
 135   range = GTK_RANGE (scrollbar);
 136 }
 137
 138 static void
 139 gtk_scrollbar_style_set  (GtkWidget *widget,
 140                           GtkStyle  *previous)
 141 {
 142   gint slider_length;
 143   gboolean fixed_size;
 144   gboolean has_a, has_b, has_c, has_d;
 145   GtkRange *range;
 146
 147   range = GTK_RANGE (widget);
 148
 149   gtk_widget_style_get (widget,
 150                         "min_slider_length", &slider_length,
 151                         "fixed_slider_length", &fixed_size,
 152                         "has_backward_stepper", &has_a,
 153                         "has_secondary_forward_stepper", &has_b,
 154                         "has_secondary_backward_stepper", &has_c,
 155                         "has_forward_stepper", &has_d,
 156                         NULL);
 157
 158   range->min_slider_size = slider_length;
 159   range->slider_size_fixed = fixed_size;
 160
 161   range->has_stepper_a = has_a;
 162   range->has_stepper_b = has_b;
 163   range->has_stepper_c = has_c;
 164   range->has_stepper_d = has_d;
 165
 166   (* GTK_WIDGET_CLASS (parent_class)->style_set) (widget, previous);
 167 }
 168
 169 #define __GTK_SCROLLBAR_C__
 170 #include "gtkaliasdef.c"