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/* GTK+ - accessibility implementations
* 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 <string.h>
#include <gtk/gtk.h>
#include "gtkpanedaccessible.h"
static void atk_value_interface_init (AtkValueIface *iface);
G_DEFINE_TYPE_WITH_CODE (GtkPanedAccessible, gtk_paned_accessible, GTK_TYPE_WIDGET_ACCESSIBLE,
G_IMPLEMENT_INTERFACE (ATK_TYPE_VALUE, atk_value_interface_init))
static void
gtk_paned_accessible_position_changed (GtkWidget *widget)
{
AtkObject *obj = gtk_widget_get_accessible (widget);
g_object_notify (G_OBJECT (obj), "accessible-value");
}
static void
gtk_paned_accessible_initialize (AtkObject *obj,
gpointer data)
{
ATK_OBJECT_CLASS (gtk_paned_accessible_parent_class)->initialize (obj, data);
g_signal_connect (data, "notify::position",
G_CALLBACK (gtk_paned_accessible_position_changed), NULL);
obj->role = ATK_ROLE_SPLIT_PANE;
}
static void
gtk_paned_accessible_class_init (GtkPanedAccessibleClass *klass)
{
AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
class->initialize = gtk_paned_accessible_initialize;
}
static void
gtk_paned_accessible_init (GtkPanedAccessible *paned)
{
}
static void
gtk_paned_accessible_get_current_value (AtkValue *obj,
GValue *value)
{
GtkWidget* widget;
int current_value;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
if (widget == NULL)
return;
current_value = gtk_paned_get_position (GTK_PANED (widget));
memset (value, 0, sizeof (GValue));
g_value_init (value, G_TYPE_INT);
g_value_set_int (value, current_value);
}
static void
gtk_paned_accessible_get_maximum_value (AtkValue *obj,
GValue *value)
{
GtkWidget* widget;
int maximum_value;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
if (widget == NULL)
return;
g_object_get (GTK_PANED (widget),
"max-position", &maximum_value,
NULL);
memset (value, 0, sizeof (GValue));
g_value_init (value, G_TYPE_INT);
g_value_set_int (value, maximum_value);
}
static void
gtk_paned_accessible_get_minimum_value (AtkValue *obj,
GValue *value)
{
GtkWidget* widget;
int minimum_value;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
if (widget == NULL)
return;
g_object_get (GTK_PANED (widget),
"min-position", &minimum_value,
NULL);
memset (value, 0, sizeof (GValue));
g_value_init (value, G_TYPE_INT);
g_value_set_int (value, minimum_value);
}
/* Calling atk_value_set_current_value() is no guarantee that the value
* is acceptable; it is necessary to listen for accessible-value signals
* and check whether the current value has been changed or check what the
* maximum and minimum values are.
*/
static gboolean
gtk_paned_accessible_set_current_value (AtkValue *obj,
const GValue *value)
{
GtkWidget* widget;
int new_value;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
if (widget == NULL)
return FALSE;
if (G_VALUE_HOLDS_INT (value))
{
new_value = g_value_get_int (value);
gtk_paned_set_position (GTK_PANED (widget), new_value);
return TRUE;
}
else
return FALSE;
}
static void
gtk_paned_accessible_get_value_and_text (AtkValue *obj,
double *value,
char **text)
{
GtkWidget *widget;
GtkPaned *paned;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
paned = GTK_PANED (widget);
*value = gtk_paned_get_position (paned);
*text = NULL;
}
static AtkRange *
gtk_paned_accessible_get_range (AtkValue *obj)
{
GtkWidget *widget;
int minimum_value;
int maximum_value;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
g_object_get (widget,
"min-position", &minimum_value,
"max-position", &maximum_value,
NULL);
return atk_range_new (minimum_value, maximum_value, NULL);
}
static void
gtk_paned_accessible_set_value (AtkValue *obj,
const double value)
{
GtkWidget *widget;
GtkPaned *paned;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
paned = GTK_PANED (widget);
gtk_paned_set_position (paned, (int)(value + 0.5));
}
static void
atk_value_interface_init (AtkValueIface *iface)
{
iface->get_current_value = gtk_paned_accessible_get_current_value;
iface->get_maximum_value = gtk_paned_accessible_get_maximum_value;
iface->get_minimum_value = gtk_paned_accessible_get_minimum_value;
iface->set_current_value = gtk_paned_accessible_set_current_value;
iface->get_value_and_text = gtk_paned_accessible_get_value_and_text;
iface->get_range = gtk_paned_accessible_get_range;
iface->set_value = gtk_paned_accessible_set_value;
}
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