1 /* GAIL - The GNOME Accessibility Implementation Library
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, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
24 #include "gtkrangeaccessible.h"
27 static void atk_action_interface_init (AtkActionIface *iface);
28 static void atk_value_interface_init (AtkValueIface *iface);
30 G_DEFINE_TYPE_WITH_CODE (GtkRangeAccessible, gtk_range_accessible, GTK_TYPE_WIDGET_ACCESSIBLE,
31 G_IMPLEMENT_INTERFACE (ATK_TYPE_ACTION, atk_action_interface_init)
32 G_IMPLEMENT_INTERFACE (ATK_TYPE_VALUE, atk_value_interface_init))
35 gtk_range_accessible_value_changed (GtkAdjustment *adjustment,
38 g_object_notify (G_OBJECT (data), "accessible-value");
42 gtk_range_accessible_initialize (AtkObject *obj,
45 GtkRangeAccessible *range = GTK_RANGE_ACCESSIBLE (obj);
49 ATK_OBJECT_CLASS (gtk_range_accessible_parent_class)->initialize (obj, data);
51 gtk_range = GTK_RANGE (data);
53 * If a GtkAdjustment already exists for the GtkRange,
54 * create the GailAdjustment
56 adj = gtk_range_get_adjustment (gtk_range);
59 g_signal_connect (adj,
61 G_CALLBACK (gtk_range_accessible_value_changed),
65 obj->role = ATK_ROLE_SLIDER;
69 gtk_range_accessible_finalize (GObject *object)
71 GtkRangeAccessible *range = GTK_RANGE_ACCESSIBLE (object);
75 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (object));
78 adj = gtk_range_get_adjustment (GTK_RANGE (widget));
80 g_signal_handlers_disconnect_by_func (adj,
81 gtk_range_accessible_value_changed,
85 G_OBJECT_CLASS (gtk_range_accessible_parent_class)->finalize (object);
89 gtk_range_accessible_notify_gtk (GObject *obj,
92 GtkWidget *widget = GTK_WIDGET (obj);
96 if (strcmp (pspec->name, "adjustment") == 0)
98 range = gtk_widget_get_accessible (widget);
99 adj = gtk_range_get_adjustment (GTK_RANGE (widget));
100 g_signal_connect (adj,
102 G_CALLBACK (gtk_range_accessible_value_changed),
106 GTK_WIDGET_ACCESSIBLE_CLASS (gtk_range_accessible_parent_class)->notify_gtk (obj, pspec);
111 gtk_range_accessible_class_init (GtkRangeAccessibleClass *klass)
113 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
114 AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
115 GtkWidgetAccessibleClass *widget_class = (GtkWidgetAccessibleClass*)klass;
117 widget_class->notify_gtk = gtk_range_accessible_notify_gtk;
119 class->initialize = gtk_range_accessible_initialize;
121 gobject_class->finalize = gtk_range_accessible_finalize;
125 gtk_range_accessible_init (GtkRangeAccessible *range)
130 gtk_range_accessible_get_current_value (AtkValue *obj,
134 GtkAdjustment *adjustment;
136 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
137 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
138 if (adjustment == NULL)
141 memset (value, 0, sizeof (GValue));
142 g_value_init (value, G_TYPE_DOUBLE);
143 g_value_set_double (value, gtk_adjustment_get_value (adjustment));
147 gtk_range_accessible_get_maximum_value (AtkValue *obj,
151 GtkAdjustment *adjustment;
154 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
155 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
156 if (adjustment == NULL)
159 max = gtk_adjustment_get_upper (adjustment)
160 - gtk_adjustment_get_page_size (adjustment);
162 if (gtk_range_get_restrict_to_fill_level (GTK_RANGE (widget)))
163 max = MIN (max, gtk_range_get_fill_level (GTK_RANGE (widget)));
165 memset (value, 0, sizeof (GValue));
166 g_value_init (value, G_TYPE_DOUBLE);
167 g_value_set_double (value, max);
171 gtk_range_accessible_get_minimum_value (AtkValue *obj,
175 GtkAdjustment *adjustment;
177 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
178 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
179 if (adjustment == NULL)
182 memset (value, 0, sizeof (GValue));
183 g_value_init (value, G_TYPE_DOUBLE);
184 g_value_set_double (value, gtk_adjustment_get_lower (adjustment));
188 gtk_range_accessible_get_minimum_increment (AtkValue *obj,
192 GtkAdjustment *adjustment;
194 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
195 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
196 if (adjustment == NULL)
199 memset (value, 0, sizeof (GValue));
200 g_value_init (value, G_TYPE_DOUBLE);
201 g_value_set_double (value, gtk_adjustment_get_minimum_increment (adjustment));
205 gtk_range_accessible_set_current_value (AtkValue *obj,
209 GtkAdjustment *adjustment;
211 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
212 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
213 if (adjustment == NULL)
216 gtk_adjustment_set_value (adjustment, g_value_get_double (value));
222 atk_value_interface_init (AtkValueIface *iface)
224 iface->get_current_value = gtk_range_accessible_get_current_value;
225 iface->get_maximum_value = gtk_range_accessible_get_maximum_value;
226 iface->get_minimum_value = gtk_range_accessible_get_minimum_value;
227 iface->get_minimum_increment = gtk_range_accessible_get_minimum_increment;
228 iface->set_current_value = gtk_range_accessible_set_current_value;
232 gtk_range_accessible_do_action (AtkAction *action,
237 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (action));
241 if (!gtk_widget_get_sensitive (widget) || !gtk_widget_get_visible (widget))
247 gtk_widget_activate (widget);
253 gtk_range_accessible_get_n_actions (AtkAction *action)
259 gtk_range_accessible_get_keybinding (AtkAction *action,
262 GtkRangeAccessible *range = GTK_RANGE_ACCESSIBLE (action);
266 AtkRelation *relation;
268 gpointer target_object;
270 gchar *return_value = NULL;
275 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (range));
279 set = atk_object_ref_relation_set (ATK_OBJECT (action));
285 relation = atk_relation_set_get_relation_by_type (set, ATK_RELATION_LABELLED_BY);
288 target = atk_relation_get_target (relation);
289 target_object = g_ptr_array_index (target, 0);
290 label = gtk_accessible_get_widget (GTK_ACCESSIBLE (target_object));
292 g_object_unref (set);
294 if (GTK_IS_LABEL (label))
296 key_val = gtk_label_get_mnemonic_keyval (GTK_LABEL (label));
297 if (key_val != GDK_KEY_VoidSymbol)
298 return_value = gtk_accelerator_name (key_val, GDK_MOD1_MASK);
305 gtk_range_accessible_action_get_name (AtkAction *action,
315 atk_action_interface_init (AtkActionIface *iface)
317 iface->do_action = gtk_range_accessible_do_action;
318 iface->get_n_actions = gtk_range_accessible_get_n_actions;
319 iface->get_keybinding = gtk_range_accessible_get_keybinding;
320 iface->get_name = gtk_range_accessible_action_get_name;