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
  30 #include "gtkscrollbar.h"
  31 #include "gtkintl.h"
  32 #include "gtkprivate.h"
  33 #include "gtkalias.h"
  34
  35 static void gtk_scrollbar_style_set (GtkWidget *widget,
  36                                      GtkStyle  *previous);
  37
  38 G_DEFINE_ABSTRACT_TYPE (GtkScrollbar, gtk_scrollbar, GTK_TYPE_RANGE)
  39
  40 static void
  41 gtk_scrollbar_class_init (GtkScrollbarClass *class)
  42 {
  43   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
  44
  45   widget_class->style_set = gtk_scrollbar_style_set;
  46
  47   GTK_RANGE_CLASS (class)->stepper_detail = "Xscrollbar";
  48
  49   gtk_widget_class_install_style_property (widget_class,
  50                                            g_param_spec_int ("min-slider-length",
  51                                                              P_("Minimum Slider Length"),
  52                                                              P_("Minimum length of scrollbar slider"),
  53                                                              0,
  54                                                              G_MAXINT,
  55                                                              21,
  56                                                              GTK_PARAM_READABLE));
  57
  58   gtk_widget_class_install_style_property (widget_class,
  59                                            g_param_spec_boolean ("fixed-slider-length",
  60                                                                  P_("Fixed slider size"),
  61                                                                  P_("Don't change slider size, just lock it to the minimum length"),
  62                                                                  FALSE,
  63                                                                  GTK_PARAM_READABLE));
  64
  65   gtk_widget_class_install_style_property (widget_class,
  66                                            g_param_spec_boolean ("has-backward-stepper",
  67                                                                  P_("Backward stepper"),
  68                                                                  P_("Display the standard backward arrow button"),
  69                                                                  TRUE,
  70                                                                  GTK_PARAM_READABLE));
  71
  72   gtk_widget_class_install_style_property (widget_class,
  73                                            g_param_spec_boolean ("has-forward-stepper",
  74                                                                  P_("Forward stepper"),
  75                                                                  P_("Display the standard forward arrow button"),
  76                                                                  TRUE,
  77                                                                  GTK_PARAM_READABLE));
  78
  79   gtk_widget_class_install_style_property (widget_class,
  80                                            g_param_spec_boolean ("has-secondary-backward-stepper",
  81                                                                  P_("Secondary backward stepper"),
  82                                                                  P_("Display a second backward arrow button on the opposite end of the scrollbar"),
  83                                                                  FALSE,
  84                                                                  GTK_PARAM_READABLE));
  85
  86   gtk_widget_class_install_style_property (widget_class,
  87                                            g_param_spec_boolean ("has-secondary-forward-stepper",
  88                                                                  P_("Secondary forward stepper"),
  89                                                                  P_("Display a second forward arrow button on the opposite end of the scrollbar"),
  90                                                                  FALSE,
  91                                                                  GTK_PARAM_READABLE));
  92 }
  93
  94 static void
  95 gtk_scrollbar_init (GtkScrollbar *scrollbar)
  96 {
  97 }
  98
  99 static void
 100 gtk_scrollbar_style_set (GtkWidget *widget,
 101                          GtkStyle  *previous)
 102 {
 103   GtkRange *range = GTK_RANGE (widget);
 104   gint slider_length;
 105   gboolean fixed_size;
 106   gboolean has_a, has_b, has_c, has_d;
 107
 108   gtk_widget_style_get (widget,
 109                         "min-slider-length", &slider_length,
 110                         "fixed-slider-length", &fixed_size,
 111                         "has-backward-stepper", &has_a,
 112                         "has-secondary-forward-stepper", &has_b,
 113                         "has-secondary-backward-stepper", &has_c,
 114                         "has-forward-stepper", &has_d,
 115                         NULL);
 116
 117   range->min_slider_size = slider_length;
 118   range->slider_size_fixed = fixed_size;
 119
 120   range->has_stepper_a = has_a;
 121   range->has_stepper_b = has_b;
 122   range->has_stepper_c = has_c;
 123   range->has_stepper_d = has_d;
 124
 125   GTK_WIDGET_CLASS (gtk_scrollbar_parent_class)->style_set (widget, previous);
 126 }
 127
 128 #if 0
 129 /**
 130  * gtk_scrollbar_new:
 131  * @orientation: the scrollbar's orientation.
 132  * @adjustment: (allow-none): the #GtkAdjustment to use, or %NULL to create a new adjustment.
 133  *
 134  * Creates a new scrollbar with the given orientation.
 135  *
 136  * Return value:  the new #GtkScrollbar.
 137  *
 138  * Since: 2.16
 139  **/
 140 GtkWidget *
 141 gtk_scrollbar_new (GtkOrientation  orientation,
 142                    GtkAdjustment  *adjustment)
 143 {
 144   g_return_val_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment),
 145                         NULL);
 146
 147   return g_object_new (GTK_TYPE_SCROLLBAR,
 148                        "orientation", orientation,
 149                        "adjustment",  adjustment,
 150                        NULL);
 151 }
 152 #endif
 153
 154
 155 #define __GTK_SCROLLBAR_C__
 156 #include "gtkaliasdef.c"