1 /* GTK+ - accessibility implementations
2 * Copyright 2001, 2002, 2003 Sun Microsystems Inc.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library 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 GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
22 #include "gtkrangeaccessible.h"
25 static void atk_value_interface_init (AtkValueIface *iface);
27 G_DEFINE_TYPE_WITH_CODE (GtkRangeAccessible, gtk_range_accessible, GTK_TYPE_WIDGET_ACCESSIBLE,
28 G_IMPLEMENT_INTERFACE (ATK_TYPE_VALUE, atk_value_interface_init))
31 gtk_range_accessible_value_changed (GtkAdjustment *adjustment,
34 g_object_notify (G_OBJECT (data), "accessible-value");
38 gtk_range_accessible_initialize (AtkObject *obj,
41 GtkRangeAccessible *range = GTK_RANGE_ACCESSIBLE (obj);
45 ATK_OBJECT_CLASS (gtk_range_accessible_parent_class)->initialize (obj, data);
47 gtk_range = GTK_RANGE (data);
49 * If a GtkAdjustment already exists for the GtkRange,
50 * create the GailAdjustment
52 adj = gtk_range_get_adjustment (gtk_range);
54 g_signal_connect (adj, "value-changed",
55 G_CALLBACK (gtk_range_accessible_value_changed),
58 obj->role = ATK_ROLE_SLIDER;
62 gtk_range_accessible_finalize (GObject *object)
64 GtkRangeAccessible *range = GTK_RANGE_ACCESSIBLE (object);
68 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (object));
71 adj = gtk_range_get_adjustment (GTK_RANGE (widget));
73 g_signal_handlers_disconnect_by_func (adj,
74 gtk_range_accessible_value_changed,
78 G_OBJECT_CLASS (gtk_range_accessible_parent_class)->finalize (object);
82 gtk_range_accessible_notify_gtk (GObject *obj,
85 GtkWidget *widget = GTK_WIDGET (obj);
89 if (strcmp (pspec->name, "adjustment") == 0)
91 range = gtk_widget_get_accessible (widget);
92 adj = gtk_range_get_adjustment (GTK_RANGE (widget));
93 g_signal_connect (adj, "value-changed",
94 G_CALLBACK (gtk_range_accessible_value_changed),
98 GTK_WIDGET_ACCESSIBLE_CLASS (gtk_range_accessible_parent_class)->notify_gtk (obj, pspec);
103 gtk_range_accessible_class_init (GtkRangeAccessibleClass *klass)
105 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
106 AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
107 GtkWidgetAccessibleClass *widget_class = (GtkWidgetAccessibleClass*)klass;
109 widget_class->notify_gtk = gtk_range_accessible_notify_gtk;
111 class->initialize = gtk_range_accessible_initialize;
113 gobject_class->finalize = gtk_range_accessible_finalize;
117 gtk_range_accessible_init (GtkRangeAccessible *range)
122 gtk_range_accessible_get_current_value (AtkValue *obj,
126 GtkAdjustment *adjustment;
128 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
129 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
130 if (adjustment == NULL)
133 memset (value, 0, sizeof (GValue));
134 g_value_init (value, G_TYPE_DOUBLE);
135 g_value_set_double (value, gtk_adjustment_get_value (adjustment));
139 gtk_range_accessible_get_maximum_value (AtkValue *obj,
143 GtkAdjustment *adjustment;
146 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
147 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
148 if (adjustment == NULL)
151 max = gtk_adjustment_get_upper (adjustment)
152 - gtk_adjustment_get_page_size (adjustment);
154 if (gtk_range_get_restrict_to_fill_level (GTK_RANGE (widget)))
155 max = MIN (max, gtk_range_get_fill_level (GTK_RANGE (widget)));
157 memset (value, 0, sizeof (GValue));
158 g_value_init (value, G_TYPE_DOUBLE);
159 g_value_set_double (value, max);
163 gtk_range_accessible_get_minimum_value (AtkValue *obj,
167 GtkAdjustment *adjustment;
169 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
170 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
171 if (adjustment == NULL)
174 memset (value, 0, sizeof (GValue));
175 g_value_init (value, G_TYPE_DOUBLE);
176 g_value_set_double (value, gtk_adjustment_get_lower (adjustment));
180 gtk_range_accessible_get_minimum_increment (AtkValue *obj,
184 GtkAdjustment *adjustment;
186 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
187 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
188 if (adjustment == NULL)
191 memset (value, 0, sizeof (GValue));
192 g_value_init (value, G_TYPE_DOUBLE);
193 g_value_set_double (value, gtk_adjustment_get_minimum_increment (adjustment));
197 gtk_range_accessible_set_current_value (AtkValue *obj,
201 GtkAdjustment *adjustment;
203 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
204 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
205 if (adjustment == NULL)
208 gtk_adjustment_set_value (adjustment, g_value_get_double (value));
214 atk_value_interface_init (AtkValueIface *iface)
216 iface->get_current_value = gtk_range_accessible_get_current_value;
217 iface->get_maximum_value = gtk_range_accessible_get_maximum_value;
218 iface->get_minimum_value = gtk_range_accessible_get_minimum_value;
219 iface->get_minimum_increment = gtk_range_accessible_get_minimum_increment;
220 iface->set_current_value = gtk_range_accessible_set_current_value;