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);
58 g_signal_connect (adj, "value-changed",
59 G_CALLBACK (gtk_range_accessible_value_changed),
62 obj->role = ATK_ROLE_SLIDER;
66 gtk_range_accessible_finalize (GObject *object)
68 GtkRangeAccessible *range = GTK_RANGE_ACCESSIBLE (object);
72 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (object));
75 adj = gtk_range_get_adjustment (GTK_RANGE (widget));
77 g_signal_handlers_disconnect_by_func (adj,
78 gtk_range_accessible_value_changed,
82 G_OBJECT_CLASS (_gtk_range_accessible_parent_class)->finalize (object);
86 gtk_range_accessible_notify_gtk (GObject *obj,
89 GtkWidget *widget = GTK_WIDGET (obj);
93 if (strcmp (pspec->name, "adjustment") == 0)
95 range = gtk_widget_get_accessible (widget);
96 adj = gtk_range_get_adjustment (GTK_RANGE (widget));
97 g_signal_connect (adj, "value-changed",
98 G_CALLBACK (gtk_range_accessible_value_changed),
102 GTK_WIDGET_ACCESSIBLE_CLASS (_gtk_range_accessible_parent_class)->notify_gtk (obj, pspec);
107 _gtk_range_accessible_class_init (GtkRangeAccessibleClass *klass)
109 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
110 AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
111 GtkWidgetAccessibleClass *widget_class = (GtkWidgetAccessibleClass*)klass;
113 widget_class->notify_gtk = gtk_range_accessible_notify_gtk;
115 class->initialize = gtk_range_accessible_initialize;
117 gobject_class->finalize = gtk_range_accessible_finalize;
121 _gtk_range_accessible_init (GtkRangeAccessible *range)
126 gtk_range_accessible_get_current_value (AtkValue *obj,
130 GtkAdjustment *adjustment;
132 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
133 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
134 if (adjustment == NULL)
137 memset (value, 0, sizeof (GValue));
138 g_value_init (value, G_TYPE_DOUBLE);
139 g_value_set_double (value, gtk_adjustment_get_value (adjustment));
143 gtk_range_accessible_get_maximum_value (AtkValue *obj,
147 GtkAdjustment *adjustment;
150 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
151 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
152 if (adjustment == NULL)
155 max = gtk_adjustment_get_upper (adjustment)
156 - gtk_adjustment_get_page_size (adjustment);
158 if (gtk_range_get_restrict_to_fill_level (GTK_RANGE (widget)))
159 max = MIN (max, gtk_range_get_fill_level (GTK_RANGE (widget)));
161 memset (value, 0, sizeof (GValue));
162 g_value_init (value, G_TYPE_DOUBLE);
163 g_value_set_double (value, max);
167 gtk_range_accessible_get_minimum_value (AtkValue *obj,
171 GtkAdjustment *adjustment;
173 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
174 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
175 if (adjustment == NULL)
178 memset (value, 0, sizeof (GValue));
179 g_value_init (value, G_TYPE_DOUBLE);
180 g_value_set_double (value, gtk_adjustment_get_lower (adjustment));
184 gtk_range_accessible_get_minimum_increment (AtkValue *obj,
188 GtkAdjustment *adjustment;
190 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
191 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
192 if (adjustment == NULL)
195 memset (value, 0, sizeof (GValue));
196 g_value_init (value, G_TYPE_DOUBLE);
197 g_value_set_double (value, gtk_adjustment_get_minimum_increment (adjustment));
201 gtk_range_accessible_set_current_value (AtkValue *obj,
205 GtkAdjustment *adjustment;
207 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
208 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
209 if (adjustment == NULL)
212 gtk_adjustment_set_value (adjustment, g_value_get_double (value));
218 atk_value_interface_init (AtkValueIface *iface)
220 iface->get_current_value = gtk_range_accessible_get_current_value;
221 iface->get_maximum_value = gtk_range_accessible_get_maximum_value;
222 iface->get_minimum_value = gtk_range_accessible_get_minimum_value;
223 iface->get_minimum_increment = gtk_range_accessible_get_minimum_increment;
224 iface->set_current_value = gtk_range_accessible_set_current_value;
228 gtk_range_accessible_do_action (AtkAction *action,
233 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (action));
237 if (!gtk_widget_get_sensitive (widget) || !gtk_widget_get_visible (widget))
243 gtk_widget_activate (widget);
249 gtk_range_accessible_get_n_actions (AtkAction *action)
255 gtk_range_accessible_get_keybinding (AtkAction *action,
258 GtkRangeAccessible *range = GTK_RANGE_ACCESSIBLE (action);
262 AtkRelation *relation;
264 gpointer target_object;
266 gchar *return_value = NULL;
271 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (range));
275 set = atk_object_ref_relation_set (ATK_OBJECT (action));
281 relation = atk_relation_set_get_relation_by_type (set, ATK_RELATION_LABELLED_BY);
284 target = atk_relation_get_target (relation);
285 target_object = g_ptr_array_index (target, 0);
286 label = gtk_accessible_get_widget (GTK_ACCESSIBLE (target_object));
288 g_object_unref (set);
290 if (GTK_IS_LABEL (label))
292 key_val = gtk_label_get_mnemonic_keyval (GTK_LABEL (label));
293 if (key_val != GDK_KEY_VoidSymbol)
294 return_value = gtk_accelerator_name (key_val, GDK_MOD1_MASK);
301 gtk_range_accessible_action_get_name (AtkAction *action,
311 atk_action_interface_init (AtkActionIface *iface)
313 iface->do_action = gtk_range_accessible_do_action;
314 iface->get_n_actions = gtk_range_accessible_get_n_actions;
315 iface->get_keybinding = gtk_range_accessible_get_keybinding;
316 iface->get_name = gtk_range_accessible_action_get_name;