gtk2/gtk/a11y/gtkspinbuttonaccessible.c

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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
2012-02-27 13:01:10 +00:00
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <gtk/gtk.h>
#include "gtkspinbuttonaccessible.h"
struct _GtkSpinButtonAccessiblePrivate
{
GtkAdjustment *adjustment;
};
static void atk_value_interface_init (AtkValueIface *iface);
G_DEFINE_TYPE_WITH_CODE (GtkSpinButtonAccessible, gtk_spin_button_accessible, GTK_TYPE_ENTRY_ACCESSIBLE,
G_ADD_PRIVATE (GtkSpinButtonAccessible)
G_IMPLEMENT_INTERFACE (ATK_TYPE_VALUE, atk_value_interface_init))
static void
gtk_spin_button_accessible_value_changed (GtkAdjustment *adjustment,
gpointer data)
{
g_object_notify (G_OBJECT (data), "accessible-value");
}
static void
gtk_spin_button_accessible_widget_set (GtkAccessible *accessible)
{
GtkSpinButtonAccessiblePrivate *priv = GTK_SPIN_BUTTON_ACCESSIBLE (accessible)->priv;
GtkWidget *spin;
GtkAdjustment *adj;
spin = gtk_accessible_get_widget (accessible);
adj = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (spin));
if (adj)
{
priv->adjustment = adj;
g_object_ref (priv->adjustment);
g_signal_connect (priv->adjustment, "value-changed",
G_CALLBACK (gtk_spin_button_accessible_value_changed),
accessible);
}
}
static void
gtk_spin_button_accessible_widget_unset (GtkAccessible *accessible)
{
GtkSpinButtonAccessiblePrivate *priv = GTK_SPIN_BUTTON_ACCESSIBLE (accessible)->priv;
if (priv->adjustment)
{
g_signal_handlers_disconnect_by_func (priv->adjustment,
G_CALLBACK (gtk_spin_button_accessible_value_changed),
accessible);
g_object_unref (priv->adjustment);
priv->adjustment = NULL;
}
}
static void
gtk_spin_button_accessible_initialize (AtkObject *obj,
gpointer data)
{
ATK_OBJECT_CLASS (gtk_spin_button_accessible_parent_class)->initialize (obj, data);
obj->role = ATK_ROLE_SPIN_BUTTON;
}
static void
gtk_spin_button_accessible_notify_gtk (GObject *obj,
GParamSpec *pspec)
{
GtkWidget *widget = GTK_WIDGET (obj);
AtkObject *spin;
if (strcmp (pspec->name, "adjustment") == 0)
{
spin = gtk_widget_get_accessible (widget);
gtk_spin_button_accessible_widget_unset (GTK_ACCESSIBLE (spin));
gtk_spin_button_accessible_widget_set (GTK_ACCESSIBLE (spin));
}
else
GTK_WIDGET_ACCESSIBLE_CLASS (gtk_spin_button_accessible_parent_class)->notify_gtk (obj, pspec);
}
static void
gtk_spin_button_accessible_class_init (GtkSpinButtonAccessibleClass *klass)
{
AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
GtkAccessibleClass *accessible_class = (GtkAccessibleClass*)klass;
GtkWidgetAccessibleClass *widget_class = (GtkWidgetAccessibleClass*)klass;
class->initialize = gtk_spin_button_accessible_initialize;
accessible_class->widget_set = gtk_spin_button_accessible_widget_set;
accessible_class->widget_unset = gtk_spin_button_accessible_widget_unset;
widget_class->notify_gtk = gtk_spin_button_accessible_notify_gtk;
}
static void
gtk_spin_button_accessible_init (GtkSpinButtonAccessible *button)
{
button->priv = gtk_spin_button_accessible_get_instance_private (button);
}
static void
gtk_spin_button_accessible_get_current_value (AtkValue *obj,
GValue *value)
{
GtkWidget *widget;
GtkAdjustment *adjustment;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
adjustment = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget));
if (adjustment == NULL)
return;
memset (value, 0, sizeof (GValue));
g_value_init (value, G_TYPE_DOUBLE);
g_value_set_double (value, gtk_adjustment_get_value (adjustment));
}
static void
gtk_spin_button_accessible_get_maximum_value (AtkValue *obj,
GValue *value)
{
GtkWidget *widget;
GtkAdjustment *adjustment;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
adjustment = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget));
if (adjustment == NULL)
return;
memset (value, 0, sizeof (GValue));
g_value_init (value, G_TYPE_DOUBLE);
g_value_set_double (value, gtk_adjustment_get_upper (adjustment));
}
static void
gtk_spin_button_accessible_get_minimum_value (AtkValue *obj,
GValue *value)
{
GtkWidget *widget;
GtkAdjustment *adjustment;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
adjustment = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget));
if (adjustment == NULL)
return;
memset (value, 0, sizeof (GValue));
g_value_init (value, G_TYPE_DOUBLE);
g_value_set_double (value, gtk_adjustment_get_lower (adjustment));
}
static void
gtk_spin_button_accessible_get_minimum_increment (AtkValue *obj,
GValue *value)
{
GtkWidget *widget;
GtkAdjustment *adjustment;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
adjustment = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget));
if (adjustment == NULL)
return;
memset (value, 0, sizeof (GValue));
g_value_init (value, G_TYPE_DOUBLE);
g_value_set_double (value, gtk_adjustment_get_minimum_increment (adjustment));
}
static gboolean
gtk_spin_button_accessible_set_current_value (AtkValue *obj,
const GValue *value)
{
GtkWidget *widget;
GtkAdjustment *adjustment;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
adjustment = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget));
if (adjustment == NULL)
return FALSE;
gtk_adjustment_set_value (adjustment, g_value_get_double (value));
return TRUE;
}
static void
gtk_spin_button_accessible_get_value_and_text (AtkValue *obj,
gdouble *value,
gchar **text)
{
GtkWidget *widget;
GtkAdjustment *adjustment;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
adjustment = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget));
if (adjustment == NULL)
return;
*value = gtk_adjustment_get_value (adjustment);
*text = NULL;
}
static AtkRange *
gtk_spin_button_accessible_get_range (AtkValue *obj)
{
GtkWidget *widget;
GtkAdjustment *adjustment;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
adjustment = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget));
if (adjustment == NULL)
return NULL;
return atk_range_new (gtk_adjustment_get_lower (adjustment),
gtk_adjustment_get_upper (adjustment),
NULL);
}
static void
gtk_spin_button_accessible_set_value (AtkValue *obj,
const gdouble value)
{
GtkWidget *widget;
GtkAdjustment *adjustment;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
adjustment = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget));
if (adjustment == NULL)
return;
gtk_adjustment_set_value (adjustment, value);
}
static gdouble
gtk_spin_button_accessible_get_increment (AtkValue *obj)
{
GtkWidget *widget;
GtkAdjustment *adjustment;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
adjustment = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget));
if (adjustment == NULL)
return 0;
return gtk_adjustment_get_minimum_increment (adjustment);
}
static void
atk_value_interface_init (AtkValueIface *iface)
{
iface->get_current_value = gtk_spin_button_accessible_get_current_value;
iface->get_maximum_value = gtk_spin_button_accessible_get_maximum_value;
iface->get_minimum_value = gtk_spin_button_accessible_get_minimum_value;
iface->get_minimum_increment = gtk_spin_button_accessible_get_minimum_increment;
iface->set_current_value = gtk_spin_button_accessible_set_current_value;
iface->get_value_and_text = gtk_spin_button_accessible_get_value_and_text;
iface->get_range = gtk_spin_button_accessible_get_range;
iface->set_value = gtk_spin_button_accessible_set_value;
iface->get_increment = gtk_spin_button_accessible_get_increment;
}