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 <gdk/gdkkeysyms.h>
25 #include "gtkrangeaccessible.h"
28 static void atk_action_interface_init (AtkActionIface *iface);
29 static void atk_value_interface_init (AtkValueIface *iface);
31 G_DEFINE_TYPE_WITH_CODE (GtkRangeAccessible, gtk_range_accessible, GAIL_TYPE_WIDGET,
32 G_IMPLEMENT_INTERFACE (ATK_TYPE_ACTION, atk_action_interface_init)
33 G_IMPLEMENT_INTERFACE (ATK_TYPE_VALUE, atk_value_interface_init))
36 gtk_range_accessible_value_changed (GtkAdjustment *adjustment,
39 g_object_notify (G_OBJECT (data), "accessible-value");
43 gtk_range_accessible_initialize (AtkObject *obj,
46 GtkRangeAccessible *range = GTK_RANGE_ACCESSIBLE (obj);
50 ATK_OBJECT_CLASS (gtk_range_accessible_parent_class)->initialize (obj, data);
52 gtk_range = GTK_RANGE (data);
54 * If a GtkAdjustment already exists for the GtkRange,
55 * create the GailAdjustment
57 adj = gtk_range_get_adjustment (gtk_range);
60 g_signal_connect (adj,
62 G_CALLBACK (gtk_range_accessible_value_changed),
66 obj->role = ATK_ROLE_SLIDER;
70 gtk_range_accessible_finalize (GObject *object)
72 GtkRangeAccessible *range = GTK_RANGE_ACCESSIBLE (object);
76 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (object));
77 adj = gtk_range_get_adjustment (GTK_RANGE (widget));
80 g_signal_handlers_disconnect_by_func (adj,
81 gtk_range_accessible_value_changed,
84 if (range->action_idle_handler)
86 g_source_remove (range->action_idle_handler);
87 range->action_idle_handler = 0;
90 G_OBJECT_CLASS (gtk_range_accessible_parent_class)->finalize (object);
94 gtk_range_accessible_notify_gtk (GObject *obj,
97 GtkWidget *widget = GTK_WIDGET (obj);
101 if (strcmp (pspec->name, "adjustment") == 0)
103 range = gtk_widget_get_accessible (widget);
104 adj = gtk_range_get_adjustment (GTK_RANGE (widget));
105 g_signal_connect (adj,
107 G_CALLBACK (gtk_range_accessible_value_changed),
111 GAIL_WIDGET_CLASS (gtk_range_accessible_parent_class)->notify_gtk (obj, pspec);
116 gtk_range_accessible_class_init (GtkRangeAccessibleClass *klass)
118 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
119 AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
120 GailWidgetClass *widget_class = (GailWidgetClass*)klass;
122 widget_class->notify_gtk = gtk_range_accessible_notify_gtk;
124 class->initialize = gtk_range_accessible_initialize;
126 gobject_class->finalize = gtk_range_accessible_finalize;
130 gtk_range_accessible_init (GtkRangeAccessible *range)
135 gtk_range_accessible_get_current_value (AtkValue *obj,
139 GtkAdjustment *adjustment;
141 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
142 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
143 if (adjustment == NULL)
146 memset (value, 0, sizeof (GValue));
147 g_value_init (value, G_TYPE_DOUBLE);
148 g_value_set_double (value, gtk_adjustment_get_value (adjustment));
152 gtk_range_accessible_get_maximum_value (AtkValue *obj,
156 GtkAdjustment *adjustment;
159 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
160 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
161 if (adjustment == NULL)
164 max = gtk_adjustment_get_upper (adjustment)
165 - gtk_adjustment_get_page_size (adjustment);
167 if (gtk_range_get_restrict_to_fill_level (GTK_RANGE (widget)))
168 max = MIN (max, gtk_range_get_fill_level (GTK_RANGE (widget)));
170 memset (value, 0, sizeof (GValue));
171 g_value_init (value, G_TYPE_DOUBLE);
172 g_value_set_double (value, max);
176 gtk_range_accessible_get_minimum_value (AtkValue *obj,
180 GtkAdjustment *adjustment;
182 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
183 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
184 if (adjustment == NULL)
187 memset (value, 0, sizeof (GValue));
188 g_value_init (value, G_TYPE_DOUBLE);
189 g_value_set_double (value, gtk_adjustment_get_lower (adjustment));
193 gtk_range_accessible_get_minimum_increment (AtkValue *obj,
197 GtkAdjustment *adjustment;
199 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
200 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
201 if (adjustment == NULL)
204 memset (value, 0, sizeof (GValue));
205 g_value_init (value, G_TYPE_DOUBLE);
206 g_value_set_double (value, gtk_adjustment_get_minimum_increment (adjustment));
210 gtk_range_accessible_set_current_value (AtkValue *obj,
214 GtkAdjustment *adjustment;
216 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
217 adjustment = gtk_range_get_adjustment (GTK_RANGE (widget));
218 if (adjustment == NULL)
221 gtk_adjustment_set_value (adjustment, g_value_get_double (value));
227 atk_value_interface_init (AtkValueIface *iface)
229 iface->get_current_value = gtk_range_accessible_get_current_value;
230 iface->get_maximum_value = gtk_range_accessible_get_maximum_value;
231 iface->get_minimum_value = gtk_range_accessible_get_minimum_value;
232 iface->get_minimum_increment = gtk_range_accessible_get_minimum_increment;
233 iface->set_current_value = gtk_range_accessible_set_current_value;
237 idle_do_action (gpointer data)
239 GtkRangeAccessible *range = GTK_RANGE_ACCESSIBLE (data);
242 range->action_idle_handler = 0;
243 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (range));
247 if (!gtk_widget_get_sensitive (widget) || !gtk_widget_get_visible (widget))
250 gtk_widget_activate (widget);
256 gtk_range_accessible_do_action (AtkAction *action,
259 GtkRangeAccessible *range = GTK_RANGE_ACCESSIBLE (action);
262 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (action));
266 if (!gtk_widget_get_sensitive (widget) || !gtk_widget_get_visible (widget))
272 if (range->action_idle_handler)
275 range->action_idle_handler = gdk_threads_add_idle (idle_do_action, range);
281 gtk_range_accessible_get_n_actions (AtkAction *action)
287 gtk_range_accessible_get_keybinding (AtkAction *action,
290 GtkRangeAccessible *range = GTK_RANGE_ACCESSIBLE (action);
294 AtkRelation *relation;
296 gpointer target_object;
298 gchar *return_value = NULL;
303 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (range));
307 set = atk_object_ref_relation_set (ATK_OBJECT (action));
313 relation = atk_relation_set_get_relation_by_type (set, ATK_RELATION_LABELLED_BY);
316 target = atk_relation_get_target (relation);
317 target_object = g_ptr_array_index (target, 0);
318 label = gtk_accessible_get_widget (GTK_ACCESSIBLE (target_object));
320 g_object_unref (set);
322 if (GTK_IS_LABEL (label))
324 key_val = gtk_label_get_mnemonic_keyval (GTK_LABEL (label));
325 if (key_val != GDK_KEY_VoidSymbol)
326 return_value = gtk_accelerator_name (key_val, GDK_MOD1_MASK);
333 gtk_range_accessible_action_get_name (AtkAction *action,
343 atk_action_interface_init (AtkActionIface *iface)
345 iface->do_action = gtk_range_accessible_do_action;
346 iface->get_n_actions = gtk_range_accessible_get_n_actions;
347 iface->get_keybinding = gtk_range_accessible_get_keybinding;
348 iface->get_name = gtk_range_accessible_action_get_name;