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a11y: redoing focus stuff

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Removing atkcomponent, focus_tracker, etc. Emitting focus state change
from the stage. Now things are more simple, and stop to use some
of the soon-to-be-deprecated signals on ATK.
This commit is contained in:
Alejandro Piñeiro 2012-02-08 18:46:11 +01:00
parent 5b4d29bc4a
commit cc126f55eb
3 changed files with 61 additions and 117 deletions
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114
clutter/cally/cally-actor.c
View File

@ -43,7 +43,12 @@
* clutter_stage_set_key_focus. So, we will use this approach: all actors are
* focusable, and we get the currently focused using clutter_stage_get_key_focus
* This affects focus related stateset and some atk_componenet focus methods (like
* grab focus)
* grab focus).
*
* In the same way, we will manage the focus state change management
* on the cally-stage object. The reason is avoid missing a focus
* state change event if the object is focused just before the
* accessibility object being created.
*
* ####
*
@ -177,12 +182,6 @@ static void cally_actor_get_extents (AtkComponent *component,
AtkCoordType coord_type);
static gint cally_actor_get_mdi_zorder (AtkComponent *component);
static gboolean cally_actor_grab_focus (AtkComponent *component);
static guint cally_actor_add_focus_handler (AtkComponent *component,
AtkFocusHandler handler);
static void cally_actor_remove_focus_handler (AtkComponent *component,
guint handler_id);
static void cally_actor_focus_event (AtkObject *obj,
gboolean focus_in);
/* AtkAction.h */
static void cally_actor_action_interface_init (AtkActionIface *iface);
@ -210,10 +209,6 @@ static void cally_actor_notify_clutter (GObject *obj,
GParamSpec *pspec);
static void cally_actor_real_notify_clutter (GObject *obj,
GParamSpec *pspec);
static gboolean cally_actor_focus_clutter (ClutterActor *actor,
gpointer data);
static gboolean cally_actor_real_focus_clutter (ClutterActor *actor,
gpointer data);
G_DEFINE_TYPE_WITH_CODE (CallyActor,
cally_actor,
@ -277,20 +272,10 @@ cally_actor_initialize (AtkObject *obj,
priv = self->priv;
actor = CLUTTER_ACTOR (data);
g_signal_connect_after (actor,
"key-focus-in",
G_CALLBACK (cally_actor_focus_clutter),
GINT_TO_POINTER (TRUE));
g_signal_connect_after (actor,
"key-focus-out",
G_CALLBACK (cally_actor_focus_clutter),
GINT_TO_POINTER (FALSE));
g_signal_connect (actor,
"notify",
G_CALLBACK (cally_actor_notify_clutter),
NULL);
atk_component_add_focus_handler (ATK_COMPONENT (self),
cally_actor_focus_event);
g_object_set_data (G_OBJECT (obj), "atk-component-layer",
GINT_TO_POINTER (ATK_LAYER_MDI));
@ -324,7 +309,6 @@ cally_actor_class_init (CallyActorClass *klass)
AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
klass->focus_clutter = cally_actor_real_focus_clutter;
klass->notify_clutter = cally_actor_real_notify_clutter;
klass->add_actor = cally_actor_real_add_actor;
klass->remove_actor = cally_actor_real_remove_actor;
@ -728,8 +712,6 @@ cally_actor_component_interface_init (AtkComponentIface *iface)
/* focus management */
iface->grab_focus = cally_actor_grab_focus;
iface->add_focus_handler = cally_actor_add_focus_handler;
iface->remove_focus_handler = cally_actor_remove_focus_handler;
}
static void
@ -813,46 +795,6 @@ cally_actor_grab_focus (AtkComponent *component)
return TRUE;
}
/*
* These methods are basically taken from gail, as I don't see any
* reason to modify it. It makes me wonder why it is really required
* to be implemented in the toolkit
*/
static guint
cally_actor_add_focus_handler (AtkComponent *component,
AtkFocusHandler handler)
{
GSignalMatchType match_type;
gulong ret;
guint signal_id;
match_type = G_SIGNAL_MATCH_ID | G_SIGNAL_MATCH_FUNC;
signal_id = g_signal_lookup ("focus-event", ATK_TYPE_OBJECT);
ret = g_signal_handler_find (component, match_type, signal_id, 0, NULL,
(gpointer) handler, NULL);
if (!ret)
{
return g_signal_connect_closure_by_id (component,
signal_id, 0,
g_cclosure_new (G_CALLBACK (handler), NULL,
(GClosureNotify) NULL),
FALSE);
}
else
{
return 0;
}
}
static void
cally_actor_remove_focus_handler (AtkComponent *component,
guint handler_id)
{
g_signal_handler_disconnect (component, handler_id);
}
/*
*
* This gets the top level origin, it is, the position of the stage in
@ -1090,42 +1032,6 @@ cally_actor_action_get_keybinding (AtkAction *action,
/* Misc functions */
/*
* This function is a signal handler for key_focus_in and
* key_focus_out signal which gets emitted on a ClutterActor
*/
static gboolean
cally_actor_focus_clutter (ClutterActor *actor,
gpointer data)
{
CallyActor *cally_actor = NULL;
CallyActorClass *klass = NULL;
cally_actor = CALLY_ACTOR (clutter_actor_get_accessible (actor));
klass = CALLY_ACTOR_GET_CLASS (cally_actor);
if (klass->focus_clutter)
return klass->focus_clutter (actor, data);
else
return FALSE;
}
static gboolean
cally_actor_real_focus_clutter (ClutterActor *actor,
gpointer data)
{
CallyActor *cally_actor = NULL;
gboolean return_val = FALSE;
gboolean in = FALSE;
in = GPOINTER_TO_INT (data);
cally_actor = CALLY_ACTOR (clutter_actor_get_accessible (actor));
g_signal_emit_by_name (cally_actor, "focus_event", in, &return_val);
atk_focus_tracker_notify (ATK_OBJECT (cally_actor));
return FALSE;
}
/*
* This function is a signal handler for notify signal which gets emitted
* when a property changes value on the ClutterActor associated with the object.
@ -1184,14 +1090,6 @@ cally_actor_real_notify_clutter (GObject *obj,
atk_object_notify_state_change (atk_obj, state, value);
}
static void
cally_actor_focus_event (AtkObject *obj,
gboolean focus_in)
{
atk_object_notify_state_change (obj, ATK_STATE_FOCUSED, focus_in);
}
static void
_cally_actor_clean_action_list (CallyActor *cally_actor)
{

17
clutter/cally/cally-actor.h
View File

@ -89,12 +89,15 @@ struct _CallyActor
/**
* CallyActorClass:
* @notify_clutter: Signal handler for notify signal on Clutter actor
* @focus_clutter: Signal handler for key-focus-in and key-focus-out signal on Clutter actor
* @add_actor: Signal handler for actor-added signal on ClutterContainer interface
* @remove_actor: Signal handler for actor-added signal on ClutterContainer interface
* @focus_clutter: Signal handler for key-focus-in and key-focus-out
* signal on Clutter actor. This virtual functions is deprecated.
* @add_actor: Signal handler for actor-added signal on
* ClutterContainer interface
* @remove_actor: Signal handler for actor-added signal on
* ClutterContainer interface
*
* The <structname>CallyActorClass</structname> structure contains only
* private data
* The <structname>CallyActorClass</structname> structure contains
* only private data
*
* Since: 1.4
*/
@ -104,13 +107,9 @@ struct _CallyActorClass
AtkGObjectAccessibleClass parent_class;
/*< public >*/
/* Signal handler for notify signal on Clutter Actor */
void (*notify_clutter) (GObject *object,
GParamSpec *pspec);
/*
* Signal handler for key_focus_in and key_focus_out on Clutter Actor
*/
gboolean (*focus_clutter) (ClutterActor *actor,
gpointer data);

47
clutter/cally/cally-stage.c
View File

@ -67,6 +67,9 @@ G_DEFINE_TYPE_WITH_CODE (CallyStage,
struct _CallyStagePrivate
{
/* NULL means that the stage will receive the focus */
ClutterActor *key_focus;
gboolean active;
};
@ -121,6 +124,48 @@ cally_stage_new (ClutterActor *actor)
return accessible;
}
static void
cally_stage_notify_key_focus_cb (ClutterStage *stage,
GParamSpec *pspec,
CallyStage *self)
{
ClutterActor *key_focus = NULL;
AtkObject *new = NULL;
if (self->priv->active == FALSE)
return;
key_focus = clutter_stage_get_key_focus (stage);
if (key_focus != self->priv->key_focus)
{
AtkObject *old = NULL;
if (self->priv->key_focus != NULL)
old = clutter_actor_get_accessible (self->priv->key_focus);
else
old = clutter_actor_get_accessible (CLUTTER_ACTOR (stage));
atk_object_notify_state_change (old,
ATK_STATE_FOCUSED,
FALSE);
}
/* we keep notifying the focus gain without checking previous
* key-focus to avoid some missing events due timing
*/
self->priv->key_focus = key_focus;
if (key_focus != NULL)
new = clutter_actor_get_accessible (key_focus);
else
new = clutter_actor_get_accessible (CLUTTER_ACTOR (stage));
atk_object_notify_state_change (new,
ATK_STATE_FOCUSED,
TRUE);
}
static void
cally_stage_real_initialize (AtkObject *obj,
gpointer data)
@ -135,6 +180,8 @@ cally_stage_real_initialize (AtkObject *obj,
g_signal_connect (stage, "activate", G_CALLBACK (cally_stage_activate_cb), obj);
g_signal_connect (stage, "deactivate", G_CALLBACK (cally_stage_deactivate_cb), obj);
g_signal_connect (stage, "notify::key-focus",
G_CALLBACK (cally_stage_notify_key_focus_cb), obj);
obj->role = ATK_ROLE_CANVAS;
}