1 /* GAIL - The GNOME Accessibility Implementation Library
2 * Copyright 2011, F123 Consulting & Mais Diferenças
3 * Copyright 2001, 2002, 2003 Sun Microsystems Inc.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
24 #include "gtktoplevelaccessible.h"
25 #include "gtkwindowaccessible.h"
27 static GSList *key_listener_list = NULL;
29 typedef struct _GailKeyEventInfo GailKeyEventInfo;
31 struct _GailKeyEventInfo
33 AtkKeyEventStruct *key_event;
38 state_event_watcher (GSignalInvocationHint *hint,
40 const GValue *param_values,
47 GdkEventWindowState *event;
50 object = g_value_get_object (param_values + 0);
51 if (!GTK_IS_WINDOW (object))
54 event = g_value_get_boxed (param_values + 1);
55 if (event->type == GDK_WINDOW_STATE)
57 widget = GTK_WIDGET (object);
59 if (event->new_window_state & GDK_WINDOW_STATE_MAXIMIZED)
60 signal_name = "maximize";
61 else if (event->new_window_state & GDK_WINDOW_STATE_ICONIFIED)
62 signal_name = "minimize";
63 else if (event->new_window_state == 0)
64 signal_name = "restore";
68 atk_obj = gtk_widget_get_accessible (widget);
69 if (GTK_IS_WINDOW_ACCESSIBLE (atk_obj))
71 parent = atk_object_get_parent (atk_obj);
72 if (parent == atk_get_root ())
73 g_signal_emit_by_name (atk_obj, signal_name);
82 configure_event_watcher (GSignalInvocationHint *hint,
84 const GValue *param_values,
87 GtkAllocation allocation;
95 object = g_value_get_object (param_values + 0);
96 if (!GTK_IS_WINDOW (object))
99 event = g_value_get_boxed (param_values + 1);
100 if (event->type != GDK_CONFIGURE)
102 widget = GTK_WIDGET (object);
103 gtk_widget_get_allocation (widget, &allocation);
104 if (allocation.x == ((GdkEventConfigure *)event)->x &&
105 allocation.y == ((GdkEventConfigure *)event)->y &&
106 allocation.width == ((GdkEventConfigure *)event)->width &&
107 allocation.height == ((GdkEventConfigure *)event)->height)
110 if (allocation.width != ((GdkEventConfigure *)event)->width ||
111 allocation.height != ((GdkEventConfigure *)event)->height)
112 signal_name = "resize";
114 signal_name = "move";
116 atk_obj = gtk_widget_get_accessible (widget);
117 if (GTK_IS_WINDOW_ACCESSIBLE (atk_obj))
119 parent = atk_object_get_parent (atk_obj);
120 if (parent == atk_get_root ())
121 g_signal_emit_by_name (atk_obj, signal_name);
130 window_focus (GtkWidget *widget,
131 GdkEventFocus *event)
135 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
137 atk_obj = gtk_widget_get_accessible (widget);
138 g_signal_emit_by_name (atk_obj, event->in ? "activate" : "deactivate");
144 window_added (AtkObject *atk_obj,
150 if (!GTK_IS_WINDOW_ACCESSIBLE (child))
153 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (child));
157 g_signal_connect (widget, "focus-in-event", (GCallback) window_focus, NULL);
158 g_signal_connect (widget, "focus-out-event", (GCallback) window_focus, NULL);
159 g_signal_emit_by_name (child, "create");
164 window_removed (AtkObject *atk_obj,
171 if (!GTK_IS_WINDOW_ACCESSIBLE (child))
174 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (child));
178 window = GTK_WINDOW (widget);
180 * Deactivate window if it is still focused and we are removing it. This
181 * can happen when a dialog displayed by gok is removed.
183 if (gtk_window_is_active (window) &&
184 gtk_window_has_toplevel_focus (window))
185 g_signal_emit_by_name (child, "deactivate");
187 g_signal_handlers_disconnect_by_func (widget, (gpointer) window_focus, NULL);
188 g_signal_emit_by_name (child, "destroy");
192 do_window_event_initialization (void)
196 g_type_class_ref (GTK_TYPE_WINDOW_ACCESSIBLE);
197 g_signal_add_emission_hook (g_signal_lookup ("window-state-event", GTK_TYPE_WIDGET),
198 0, state_event_watcher, NULL, (GDestroyNotify) NULL);
199 g_signal_add_emission_hook (g_signal_lookup ("configure-event", GTK_TYPE_WIDGET),
200 0, configure_event_watcher, NULL, (GDestroyNotify) NULL);
202 root = atk_get_root ();
203 g_signal_connect (root, "children-changed::add",
204 (GCallback) window_added, NULL);
205 g_signal_connect (root, "children-changed::remove",
206 (GCallback) window_removed, NULL);
210 undo_window_event_initialization (void)
214 root = atk_get_root ();
216 g_signal_handlers_disconnect_by_func (root, (GCallback) window_added, NULL);
217 g_signal_handlers_disconnect_by_func (root, (GCallback) window_removed, NULL);
220 static AtkKeyEventStruct *
221 atk_key_event_from_gdk_event_key (GdkEventKey *key)
223 AtkKeyEventStruct *event = g_new0 (AtkKeyEventStruct, 1);
227 event->type = ATK_KEY_EVENT_PRESS;
229 case GDK_KEY_RELEASE:
230 event->type = ATK_KEY_EVENT_RELEASE;
233 g_assert_not_reached ();
236 event->state = key->state;
237 event->keyval = key->keyval;
238 event->length = key->length;
239 if (key->string && key->string [0] &&
240 (key->state & GDK_CONTROL_MASK ||
241 g_unichar_isgraph (g_utf8_get_char (key->string))))
243 event->string = key->string;
245 else if (key->type == GDK_KEY_PRESS ||
246 key->type == GDK_KEY_RELEASE)
248 event->string = gdk_keyval_name (key->keyval);
250 event->keycode = key->hardware_keycode;
251 event->timestamp = key->time;
253 g_print ("GailKey:\tsym %u\n\tmods %x\n\tcode %u\n\ttime %lx\n",
254 (unsigned int) event->keyval,
255 (unsigned int) event->state,
256 (unsigned int) event->keycode,
257 (unsigned long int) event->timestamp);
263 AtkKeySnoopFunc func;
269 _gail_util_key_snooper (GtkWidget *the_widget,
273 AtkKeyEventStruct *atk_event;
276 atk_event = atk_key_event_from_gdk_event_key (event);
280 for (l = key_listener_list; l; l = l->next)
282 KeyEventListener *listener = l->data;
284 result |= listener->func (atk_event, listener->data);
292 gail_util_add_key_event_listener (AtkKeySnoopFunc listener_func,
293 gpointer listener_data)
295 static guint key = 0;
296 KeyEventListener *listener;
300 listener = g_slice_new0 (KeyEventListener);
301 listener->func = listener_func;
302 listener->data = listener_data;
305 key_listener_list = g_slist_append (key_listener_list, listener);
311 gail_util_remove_key_event_listener (guint listener_key)
315 for (l = key_listener_list; l; l = l->next)
317 KeyEventListener *listener = l->data;
319 if (listener->key == listener_key)
321 g_slice_free (KeyEventListener, listener);
322 key_listener_list = g_slist_delete_link (key_listener_list, l);
330 gail_util_get_root (void)
332 static AtkObject *root = NULL;
336 root = g_object_new (GTK_TYPE_TOPLEVEL_ACCESSIBLE, NULL);
337 atk_object_initialize (root, NULL);
344 gail_util_get_toolkit_name (void)
350 gail_util_get_toolkit_version (void)
356 _gail_util_uninstall (void)
358 undo_window_event_initialization ();
362 _gail_util_install (void)
364 AtkUtilClass *atk_class = ATK_UTIL_CLASS (g_type_class_ref (ATK_TYPE_UTIL));
366 atk_class->add_key_event_listener = gail_util_add_key_event_listener;
367 atk_class->remove_key_event_listener = gail_util_remove_key_event_listener;
368 atk_class->get_root = gail_util_get_root;
369 atk_class->get_toolkit_name = gail_util_get_toolkit_name;
370 atk_class->get_toolkit_version = gail_util_get_toolkit_version;
372 do_window_event_initialization ();