forked from AuroraMiddleware/gtk
161 lines
3.9 KiB
C
161 lines
3.9 KiB
C
/* GTK+ - accessibility implementations
|
|
* Copyright 2011, F123 Consulting & Mais Diferenças
|
|
* Copyright 2001, 2002, 2003 Sun Microsystems Inc.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <stdlib.h>
|
|
#include <gtk/gtk.h>
|
|
#include "gtkaccessibility.h"
|
|
#include "gtkaccessibilityutil.h"
|
|
#include "gtktoplevelaccessible.h"
|
|
|
|
static GSList *key_listener_list = NULL;
|
|
|
|
typedef struct {
|
|
AtkKeySnoopFunc func;
|
|
gpointer data;
|
|
guint key;
|
|
} KeyEventListener;
|
|
|
|
static guint
|
|
add_key_event_listener (AtkKeySnoopFunc listener_func,
|
|
gpointer listener_data)
|
|
{
|
|
static guint key = 0;
|
|
KeyEventListener *listener;
|
|
|
|
key++;
|
|
|
|
listener = g_slice_new0 (KeyEventListener);
|
|
listener->func = listener_func;
|
|
listener->data = listener_data;
|
|
listener->key = key;
|
|
|
|
key_listener_list = g_slist_append (key_listener_list, listener);
|
|
|
|
return key;
|
|
}
|
|
|
|
static void
|
|
remove_key_event_listener (guint listener_key)
|
|
{
|
|
GSList *l;
|
|
|
|
for (l = key_listener_list; l; l = l->next)
|
|
{
|
|
KeyEventListener *listener = l->data;
|
|
|
|
if (listener->key == listener_key)
|
|
{
|
|
g_slice_free (KeyEventListener, listener);
|
|
key_listener_list = g_slist_delete_link (key_listener_list, l);
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static AtkObject *
|
|
get_root (void)
|
|
{
|
|
static AtkObject *root = NULL;
|
|
|
|
if (!root)
|
|
{
|
|
root = g_object_new (GTK_TYPE_TOPLEVEL_ACCESSIBLE, NULL);
|
|
atk_object_initialize (root, NULL);
|
|
}
|
|
|
|
return root;
|
|
}
|
|
|
|
static const gchar *
|
|
get_toolkit_name (void)
|
|
{
|
|
return "gtk";
|
|
}
|
|
|
|
static const gchar *
|
|
get_toolkit_version (void)
|
|
{
|
|
return GTK_VERSION;
|
|
}
|
|
|
|
void
|
|
_gtk_accessibility_override_atk_util (void)
|
|
{
|
|
AtkUtilClass *atk_class = ATK_UTIL_CLASS (g_type_class_ref (ATK_TYPE_UTIL));
|
|
|
|
atk_class->add_key_event_listener = add_key_event_listener;
|
|
atk_class->remove_key_event_listener = remove_key_event_listener;
|
|
atk_class->get_root = get_root;
|
|
atk_class->get_toolkit_name = get_toolkit_name;
|
|
atk_class->get_toolkit_version = get_toolkit_version;
|
|
}
|
|
|
|
static void
|
|
atk_key_event_from_gdk_event_key (GdkEventKey *key,
|
|
AtkKeyEventStruct *event)
|
|
{
|
|
GdkEventType type;
|
|
GdkModifierType state;
|
|
guint keyval;
|
|
guint16 keycode;
|
|
|
|
type = gdk_event_get_event_type ((GdkEvent *)key);
|
|
gdk_event_get_state ((GdkEvent *)key, &state);
|
|
gdk_event_get_keyval ((GdkEvent *)key, &keyval);
|
|
gdk_event_get_keycode ((GdkEvent *)key, &keycode);
|
|
|
|
if (type == GDK_KEY_PRESS)
|
|
event->type = ATK_KEY_EVENT_PRESS;
|
|
else if (type == GDK_KEY_RELEASE)
|
|
event->type = ATK_KEY_EVENT_RELEASE;
|
|
else
|
|
g_assert_not_reached ();
|
|
|
|
event->state = state;
|
|
event->keyval = keyval;
|
|
event->string = (char *) gdk_keyval_name (keyval);
|
|
event->length = strlen (event->string);
|
|
event->keycode = keycode;
|
|
event->timestamp = gdk_event_get_time ((GdkEvent *)key);
|
|
}
|
|
|
|
gboolean
|
|
_gtk_accessibility_key_snooper (GtkWidget *widget,
|
|
GdkEventKey *event)
|
|
{
|
|
GSList *l;
|
|
AtkKeyEventStruct atk_event;
|
|
gboolean result;
|
|
|
|
result = FALSE;
|
|
|
|
atk_key_event_from_gdk_event_key (event, &atk_event);
|
|
|
|
for (l = key_listener_list; l; l = l->next)
|
|
{
|
|
KeyEventListener *listener = l->data;
|
|
|
|
result |= listener->func (&atk_event, listener->data);
|
|
}
|
|
|
|
return result;
|
|
}
|