/* CALLY - The Clutter Accessibility Implementation Library
*
* Copyright (C) 2008 Igalia, S.L.
*
* Author: Alejandro Piñeiro Iglesias <apinheiro@igalia.com>
*
* 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:cally-stage
* @Title: CallyStage
* @short_description: Implementation of the ATK interfaces for a #ClutterStage
* @see_also: #ClutterStage
*
* #CallyStage implements the required ATK interfaces for #ClutterStage
*
* Some implementation details: at this moment #CallyStage is used as
* the most similar Window object in this toolkit (ie: emitting window
* related signals), although the real purpose of #ClutterStage is
* being a canvas. Anyway, this is required for applications using
* just clutter, or directly #ClutterStage
*/
#include "cally-stage.h"
#include "cally-actor-private.h"
enum {
ACTIVATE,
CREATE,
DEACTIVATE,
DESTROY,
LAST_SIGNAL
};
static guint cally_stage_signals [LAST_SIGNAL] = { 0, };
static void cally_stage_class_init (CallyStageClass *klass);
static void cally_stage_init (CallyStage *stage);
/* AtkObject.h */
static void cally_stage_real_initialize (AtkObject *obj,
gpointer data);
static AtkStateSet* cally_stage_ref_state_set (AtkObject *obj);
/* Auxiliar */
static void cally_stage_activate_cb (ClutterStage *stage,
gpointer data);
static void cally_stage_deactivate_cb (ClutterStage *stage,
gpointer data);
G_DEFINE_TYPE (CallyStage, cally_stage, CALLY_TYPE_GROUP);
#define CALLY_STAGE_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE ((obj), CALLY_TYPE_STAGE, CallyStagePrivate))
struct _CallyStagePrivate
{
gboolean active;
};
static void
cally_stage_class_init (CallyStageClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
/* CallyActorClass *cally_class = CALLY_ACTOR_CLASS (klass); */
/* AtkObject */
class->initialize = cally_stage_real_initialize;
class->ref_state_set = cally_stage_ref_state_set;
g_type_class_add_private (gobject_class, sizeof (CallyStagePrivate));
/**
* CallyStage::activate:
* @cally_actor: the object which received the signal
*
* The ::activate signal is emitted when the stage receives the key
* focus from the underlying window system.
*
* Toolkit implementation note: it is used when anyone adds a global
* event listener to "window:activate"
*
* Since: 1.4
*/
cally_stage_signals [ACTIVATE] =
g_signal_new ("activate",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0, /* default signal handler */
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* CallyStage::create:
* @cally_actor: the object which received the signal
*
* The ::create signal is emitted when the stage is created.
*
* Toolkit implementation note: it is used when anyone adds a global
* event listener to "window:create"
*
* Since: 1.4
*/
cally_stage_signals [CREATE] =
g_signal_new ("create",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0, /* default signal handler */
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* CallyStage::deactivate:
* @cally_actor: the object which received the signal
*
* The ::deactivate signal is emitted when the stage loses key focus
* from the underlying window system.
*
* Toolkit implementation note: it is used when anyone adds a global
* event listener to "window:deactivate"
*
* Since: 1.4
*/
cally_stage_signals [DEACTIVATE] =
g_signal_new ("deactivate",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0, /* default signal handler */
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* CallyStage::destroy:
* @cally_actor: the object which received the signal
*
* The ::destroy signal is emitted when the stage is destroyed.
*
* Toolkit implementation note: it is used when anyone adds a global
* event listener to "window:destroy"
*
* Since: 1.4
*/
cally_stage_signals [DESTROY] =
g_signal_new ("destroy",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0, /* default signal handler */
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
}
static void
cally_stage_init (CallyStage *cally_stage)
{
CallyStagePrivate *priv = CALLY_STAGE_GET_PRIVATE (cally_stage);
cally_stage->priv = priv;
priv->active = FALSE;
}
/**
* cally_stage_new:
* @actor: a #ClutterActor
*
* Creates a new #CallyStage for the given @actor. @actor should be a
* #ClutterStage.
*
* Return value: the newly created #AtkObject
*
* Since: 1.4
*/
AtkObject*
cally_stage_new (ClutterActor *actor)
{
GObject *object = NULL;
AtkObject *accessible = NULL;
g_return_val_if_fail (CLUTTER_IS_STAGE (actor), NULL);
object = g_object_new (CALLY_TYPE_STAGE, NULL);
accessible = ATK_OBJECT (object);
atk_object_initialize (accessible, actor);
return accessible;
}
static void
cally_stage_real_initialize (AtkObject *obj,
gpointer data)
{
ClutterStage *stage = NULL;
g_return_if_fail (CALLY_IS_STAGE (obj));
ATK_OBJECT_CLASS (cally_stage_parent_class)->initialize (obj, data);
stage = CLUTTER_STAGE (CALLY_GET_CLUTTER_ACTOR (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);
obj->role = ATK_ROLE_CANVAS;
}
static AtkStateSet*
cally_stage_ref_state_set (AtkObject *obj)
{
CallyStage *cally_stage = NULL;
AtkStateSet *state_set = NULL;
ClutterStage *stage = NULL;
g_return_val_if_fail (CALLY_IS_STAGE (obj), NULL);
cally_stage = CALLY_STAGE (obj);
state_set = ATK_OBJECT_CLASS (cally_stage_parent_class)->ref_state_set (obj);
stage = CLUTTER_STAGE (CALLY_GET_CLUTTER_ACTOR (cally_stage));
if (stage == NULL)
return state_set;
if (cally_stage->priv->active)
atk_state_set_add_state (state_set, ATK_STATE_ACTIVE);
return state_set;
}
/* Auxiliar */
static void
cally_stage_activate_cb (ClutterStage *stage,
gpointer data)
{
CallyStage *cally_stage = NULL;
g_return_if_fail (CALLY_IS_STAGE (data));
cally_stage = CALLY_STAGE (data);
cally_stage->priv->active = TRUE;
atk_object_notify_state_change (ATK_OBJECT (cally_stage),
ATK_STATE_ACTIVE, TRUE);
g_signal_emit (cally_stage, cally_stage_signals [ACTIVATE], 0);
}
static void
cally_stage_deactivate_cb (ClutterStage *stage,
gpointer data)
{
CallyStage *cally_stage = NULL;
g_return_if_fail (CALLY_IS_STAGE (data));
cally_stage = CALLY_STAGE (data);
cally_stage->priv->active = FALSE;
atk_object_notify_state_change (ATK_OBJECT (cally_stage),
ATK_STATE_ACTIVE, FALSE);
g_signal_emit (cally_stage, cally_stage_signals [DEACTIVATE], 0);
}