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, see <http://www.gnu.org/licenses/>.
22 #include "gtkrangeaccessible.h"
25 static void atk_action_interface_init (AtkActionIface *iface);
26 static void atk_value_interface_init (AtkValueIface *iface);
28 G_DEFINE_TYPE_WITH_CODE (GtkRangeAccessible, _gtk_range_accessible, GTK_TYPE_WIDGET_ACCESSIBLE,
29 G_IMPLEMENT_INTERFACE (ATK_TYPE_ACTION, atk_action_interface_init)
30 G_IMPLEMENT_INTERFACE (ATK_TYPE_VALUE, atk_value_interface_init))
33 gtk_range_accessible_value_changed (GtkAdjustment *adjustment,
36 g_object_notify (G_OBJECT (data), "accessible-value");
40 gtk_range_accessible_initialize (AtkObject *obj,
43 GtkRangeAccessible *range = GTK_RANGE_ACCESSIBLE (obj);
47 ATK_OBJECT_CLASS (_gtk_range_accessible_parent_class)->initialize (obj, data);
49 gtk_range = GTK_RANGE (data);
51 * If a GtkAdjustment already exists for the GtkRange,
52 * create the GailAdjustment
54 adj = gtk_range_get_adjustment (gtk_range);
56 g_signal_connect (adj, "value-changed",
57 G_CALLBACK (gtk_range_accessible_value_changed),
60 obj->role = ATK_ROLE_SLIDER;
64 gtk_range_accessible_finalize (GObject *object)
66 GtkRangeAccessible *range = GTK_RANGE_ACCESSIBLE (object);
70 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (object));
73 adj = gtk_range_get_adjustment (GTK_RANGE (widget));
75 g_signal_handlers_disconnect_by_func (adj,
76 gtk_range_accessible_value_changed,
80 G_OBJECT_CLASS (_gtk_range_accessible_parent_class)->finalize (object);
84 gtk_range_accessible_notify_gtk (GObject *obj,
87 GtkWidget *widget = GTK_WIDGET (obj);
91 if (strcmp (pspec->name, "adjustment") == 0)
93 range = gtk_widget_get_accessible (widget);
94 adj = gtk_range_get_adjustment (GTK_RANGE (widget));
95 g_signal_connect (adj, "value-changed",
96 G_CALLBACK (gtk_range_accessible_value_changed),
100 GTK_WIDGET_ACCESSIBLE_CLASS (_gtk_range_accessible_parent_class)->notify_gtk (obj, pspec);
105 _gtk_range_accessible_class_init (GtkRangeAccessibleClass *klass)
107 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
108 AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
109 GtkWidgetAccessibleClass *widget_class = (GtkWidgetAccessibleClass*)klass;
111 widget_class->notify_gtk = gtk_range_accessible_notify_gtk;
113 class->initialize = gtk_range_accessible_initialize;
115 gobject_class->finalize = gtk_range_accessible_finalize;
119 _gtk_range_accessible_init (GtkRangeAccessible *range)
124 gtk_range_accessible_get_current_value (AtkValue *obj,
128 GtkAdjustment *adjustment;
130 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
131 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
132 if (adjustment == NULL)
135 memset (value, 0, sizeof (GValue));
136 g_value_init (value, G_TYPE_DOUBLE);
137 g_value_set_double (value, gtk_adjustment_get_value (adjustment));
141 gtk_range_accessible_get_maximum_value (AtkValue *obj,
145 GtkAdjustment *adjustment;
148 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
149 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
150 if (adjustment == NULL)
153 max = gtk_adjustment_get_upper (adjustment)
154 - gtk_adjustment_get_page_size (adjustment);
156 if (gtk_range_get_restrict_to_fill_level (GTK_RANGE (widget)))
157 max = MIN (max, gtk_range_get_fill_level (GTK_RANGE (widget)));
159 memset (value, 0, sizeof (GValue));
160 g_value_init (value, G_TYPE_DOUBLE);
161 g_value_set_double (value, max);
165 gtk_range_accessible_get_minimum_value (AtkValue *obj,
169 GtkAdjustment *adjustment;
171 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
172 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
173 if (adjustment == NULL)
176 memset (value, 0, sizeof (GValue));
177 g_value_init (value, G_TYPE_DOUBLE);
178 g_value_set_double (value, gtk_adjustment_get_lower (adjustment));
182 gtk_range_accessible_get_minimum_increment (AtkValue *obj,
186 GtkAdjustment *adjustment;
188 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
189 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
190 if (adjustment == NULL)
193 memset (value, 0, sizeof (GValue));
194 g_value_init (value, G_TYPE_DOUBLE);
195 g_value_set_double (value, gtk_adjustment_get_minimum_increment (adjustment));
199 gtk_range_accessible_set_current_value (AtkValue *obj,
203 GtkAdjustment *adjustment;
205 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
206 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
207 if (adjustment == NULL)
210 gtk_adjustment_set_value (adjustment, g_value_get_double (value));
216 atk_value_interface_init (AtkValueIface *iface)
218 iface->get_current_value = gtk_range_accessible_get_current_value;
219 iface->get_maximum_value = gtk_range_accessible_get_maximum_value;
220 iface->get_minimum_value = gtk_range_accessible_get_minimum_value;
221 iface->get_minimum_increment = gtk_range_accessible_get_minimum_increment;
222 iface->set_current_value = gtk_range_accessible_set_current_value;
226 gtk_range_accessible_do_action (AtkAction *action,
231 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (action));
235 if (!gtk_widget_get_sensitive (widget) || !gtk_widget_get_visible (widget))
241 gtk_widget_activate (widget);
247 gtk_range_accessible_get_n_actions (AtkAction *action)
253 gtk_range_accessible_get_keybinding (AtkAction *action,
256 GtkRangeAccessible *range = GTK_RANGE_ACCESSIBLE (action);
260 AtkRelation *relation;
262 gpointer target_object;
264 gchar *return_value = NULL;
269 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (range));
273 set = atk_object_ref_relation_set (ATK_OBJECT (action));
279 relation = atk_relation_set_get_relation_by_type (set, ATK_RELATION_LABELLED_BY);
282 target = atk_relation_get_target (relation);
283 target_object = g_ptr_array_index (target, 0);
284 label = gtk_accessible_get_widget (GTK_ACCESSIBLE (target_object));
286 g_object_unref (set);
288 if (GTK_IS_LABEL (label))
290 key_val = gtk_label_get_mnemonic_keyval (GTK_LABEL (label));
291 if (key_val != GDK_KEY_VoidSymbol)
292 return_value = gtk_accelerator_name (key_val, GDK_MOD1_MASK);
299 gtk_range_accessible_action_get_name (AtkAction *action,
309 atk_action_interface_init (AtkActionIface *iface)
311 iface->do_action = gtk_range_accessible_do_action;
312 iface->get_n_actions = gtk_range_accessible_get_n_actions;
313 iface->get_keybinding = gtk_range_accessible_get_keybinding;
314 iface->get_name = gtk_range_accessible_action_get_name;