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 "gtkscrollbar.h"
  29 #include "gtkintl.h"
  30
  31 static void gtk_scrollbar_class_init (GtkScrollbarClass *klass);
  32 static void gtk_scrollbar_init       (GtkScrollbar      *scrollbar);
  33 static void gtk_scrollbar_style_set  (GtkWidget         *widget,
  34                                       GtkStyle          *previous);
  35
  36 static gpointer parent_class;
  37
  38 GType
  39 gtk_scrollbar_get_type (void)
  40 {
  41   static GType scrollbar_type = 0;
  42
  43   if (!scrollbar_type)
  44     {
  45       static const GTypeInfo scrollbar_info =
  46       {
  47         sizeof (GtkScrollbarClass),
  48         NULL,           /* base_init */
  49         NULL,           /* base_finalize */
  50         (GClassInitFunc) gtk_scrollbar_class_init,
  51         NULL,           /* class_finalize */
  52         NULL,           /* class_data */
  53         sizeof (GtkScrollbar),
  54         0,              /* n_preallocs */
  55         (GInstanceInitFunc) gtk_scrollbar_init,
  56         NULL,           /* value_table */
  57       };
  58
  59       scrollbar_type =
  60         g_type_register_static (GTK_TYPE_RANGE, "GtkScrollbar",
  61                                 &scrollbar_info, G_TYPE_FLAG_ABSTRACT);
  62     }
  63
  64   return scrollbar_type;
  65 }
  66
  67 static void
  68 gtk_scrollbar_class_init (GtkScrollbarClass *class)
  69 {
  70   GtkWidgetClass *widget_class;
  71
  72   widget_class = GTK_WIDGET_CLASS (class);
  73
  74   parent_class = g_type_class_peek_parent (class);
  75
  76   widget_class->style_set = gtk_scrollbar_style_set;
  77
  78   gtk_widget_class_install_style_property (widget_class,
  79                                            g_param_spec_int ("min_slider_length",
  80                                                              _("Minimum Slider Length"),
  81                                                              _("Minimum length of scrollbar slider"),
  82                                                              0,
  83                                                              G_MAXINT,
  84                                                              7,
  85                                                              G_PARAM_READABLE));
  86
  87   gtk_widget_class_install_style_property (widget_class,
  88                                            g_param_spec_boolean ("fixed_slider_length",
  89                                                                  _("Fixed slider size"),
  90                                                                  _("Don't change slider size, just lock it to the minimum length"),
  91                                                                  FALSE,
  92
  93                                                                  G_PARAM_READABLE));
  94
  95   gtk_widget_class_install_style_property (widget_class,
  96                                            g_param_spec_boolean ("has_backward_stepper",
  97                                                                  _("Backward stepper"),
  98                                                                  _("Display the standard backward arrow button"),
  99                                                                  TRUE,
 100
 101                                                                  G_PARAM_READABLE));
 102
 103     gtk_widget_class_install_style_property (widget_class,
 104                                              g_param_spec_boolean ("has_forward_stepper",
 105                                                                    _("Forward stepper"),
 106                                                                    _("Display the standard forward arrow button"),
 107                                                                    TRUE,
 108
 109                                                                    G_PARAM_READABLE));
 110
 111   gtk_widget_class_install_style_property (widget_class,
 112                                            g_param_spec_boolean ("has_secondary_backward_stepper",
 113                                                                  _("Secondary backward stepper"),
 114                                                                  _("Display a second backward arrow button on the opposite end of the scrollbar"),
 115                                                                  FALSE,
 116
 117                                                                  G_PARAM_READABLE));
 118
 119     gtk_widget_class_install_style_property (widget_class,
 120                                              g_param_spec_boolean ("has_secondary_forward_stepper",
 121                                                                    _("Secondary forward stepper"),
 122                                                                    _("Display a secondary forward arrow button on the opposite end of the scrollbar"),
 123                                                                    FALSE,
 124
 125                                                                    G_PARAM_READABLE));
 126 }
 127
 128 static void
 129 gtk_scrollbar_init (GtkScrollbar *scrollbar)
 130 {
 131   GtkRange *range;
 132
 133   range = GTK_RANGE (scrollbar);
 134 }
 135
 136 static void
 137 gtk_scrollbar_style_set  (GtkWidget *widget,
 138                           GtkStyle  *previous)
 139 {
 140   gint slider_length;
 141   gboolean fixed_size;
 142   gboolean has_a, has_b, has_c, has_d;
 143   GtkRange *range;
 144
 145   range = GTK_RANGE (widget);
 146
 147   gtk_widget_style_get (widget,
 148                         "min_slider_length", &slider_length,
 149                         "fixed_slider_length", &fixed_size,
 150                         "has_backward_stepper", &has_a,
 151                         "has_secondary_forward_stepper", &has_b,
 152                         "has_secondary_backward_stepper", &has_c,
 153                         "has_forward_stepper", &has_d,
 154                         NULL);
 155
 156   range->min_slider_size = slider_length;
 157   range->slider_size_fixed = fixed_size;
 158
 159   range->has_stepper_a = has_a;
 160   range->has_stepper_b = has_b;
 161   range->has_stepper_c = has_c;
 162   range->has_stepper_d = has_d;
 163
 164   (* GTK_WIDGET_CLASS (parent_class)->style_set) (widget, previous);
 165 }
 166
 167