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Revert "a11y: Remove keysnooping support"

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This reverts commit 0c8ecba7dc.

The change broke Orca completely, and we need a proper fix first.
So we have to live with the bugs intorduced by this until then.
This commit is contained in:
Benjamin Otte 2012-01-18 18:31:43 +01:00
parent 4c79e25915
commit ed8e7d1793
1 changed files with 123 additions and 0 deletions
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123
gtk/a11y/gailutil.c
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@ -29,6 +29,8 @@
static GHashTable *listener_list = NULL;
static gint listener_idx = 1;
static GSList *key_listener_list = NULL;
static guint key_snooper_id = 0;
typedef struct _GailUtilListenerInfo GailUtilListenerInfo;
typedef struct _GailKeyEventInfo GailKeyEventInfo;
@ -318,6 +320,125 @@ gail_util_remove_global_event_listener (guint remove_listener)
}
}
static AtkKeyEventStruct *
atk_key_event_from_gdk_event_key (GdkEventKey *key)
{
AtkKeyEventStruct *event = g_new0 (AtkKeyEventStruct, 1);
switch (key->type)
{
case GDK_KEY_PRESS:
event->type = ATK_KEY_EVENT_PRESS;
break;
case GDK_KEY_RELEASE:
event->type = ATK_KEY_EVENT_RELEASE;
break;
default:
g_assert_not_reached ();
return NULL;
}
event->state = key->state;
event->keyval = key->keyval;
event->length = key->length;
if (key->string && key->string [0] &&
(key->state & GDK_CONTROL_MASK ||
g_unichar_isgraph (g_utf8_get_char (key->string))))
{
event->string = key->string;
}
else if (key->type == GDK_KEY_PRESS ||
key->type == GDK_KEY_RELEASE)
{
event->string = gdk_keyval_name (key->keyval);
}
event->keycode = key->hardware_keycode;
event->timestamp = key->time;
#ifdef GAIL_DEBUG
g_print ("GailKey:\tsym %u\n\tmods %x\n\tcode %u\n\ttime %lx\n",
(unsigned int) event->keyval,
(unsigned int) event->state,
(unsigned int) event->keycode,
(unsigned long int) event->timestamp);
#endif
return event;
}
typedef struct {
AtkKeySnoopFunc func;
gpointer data;
guint key;
} KeyEventListener;
static gint
gail_key_snooper (GtkWidget *the_widget,
GdkEventKey *event,
gpointer data)
{
GSList *l;
AtkKeyEventStruct *atk_event;
gboolean result;
atk_event = atk_key_event_from_gdk_event_key (event);
result = FALSE;
for (l = key_listener_list; l; l = l->next)
{
KeyEventListener *listener = l->data;
result |= listener->func (atk_event, listener->data);
}
g_free (atk_event);
return result;
}
static guint
gail_util_add_key_event_listener (AtkKeySnoopFunc listener_func,
gpointer listener_data)
{
static guint key = 0;
KeyEventListener *listener;
if (key_snooper_id == 0)
key_snooper_id = gtk_key_snooper_install (gail_key_snooper, NULL);
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
gail_util_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;
}
}
if (key_listener_list == NULL)
{
gtk_key_snooper_remove (key_snooper_id);
key_snooper_id = 0;
}
}
static AtkObject *
gail_util_get_root (void)
{
@ -351,6 +472,8 @@ _gail_util_install (void)
atk_class->add_global_event_listener = gail_util_add_global_event_listener;
atk_class->remove_global_event_listener = gail_util_remove_global_event_listener;
atk_class->add_key_event_listener = gail_util_add_key_event_listener;
atk_class->remove_key_event_listener = gail_util_remove_key_event_listener;
atk_class->get_root = gail_util_get_root;
atk_class->get_toolkit_name = gail_util_get_toolkit_name;
atk_class->get_toolkit_version = gail_util_get_toolkit_version;