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/* GTK+ - accessibility implementations
* Copyright 2008 Jan Arne Petersen
*
* 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 <gtk/gtk.h>
#include "gtkscalebuttonaccessible.h"
#include <string.h>
static void atk_action_interface_init (AtkActionIface *iface);
static void atk_value_interface_init (AtkValueIface *iface);
G_DEFINE_TYPE_WITH_CODE (GtkScaleButtonAccessible, gtk_scale_button_accessible, GTK_TYPE_BUTTON_ACCESSIBLE,
G_IMPLEMENT_INTERFACE (ATK_TYPE_ACTION, atk_action_interface_init)
G_IMPLEMENT_INTERFACE (ATK_TYPE_VALUE, atk_value_interface_init));
static void
gtk_scale_button_accessible_value_changed (GtkAdjustment *adjustment,
gpointer data)
{
g_object_notify (G_OBJECT (data), "accessible-value");
}
static void
gtk_scale_button_accessible_initialize (AtkObject *obj,
gpointer data)
{
GtkAdjustment *adjustment;
ATK_OBJECT_CLASS (gtk_scale_button_accessible_parent_class)->initialize (obj, data);
adjustment = gtk_scale_button_get_adjustment (GTK_SCALE_BUTTON (data));
if (adjustment)
g_signal_connect (adjustment,
"value-changed",
G_CALLBACK (gtk_scale_button_accessible_value_changed),
obj);
obj->role = ATK_ROLE_SLIDER;
}
static void
gtk_scale_button_accessible_notify_gtk (GObject *obj,
GParamSpec *pspec)
{
GtkScaleButton *scale_button;
GtkScaleButtonAccessible *accessible;
scale_button = GTK_SCALE_BUTTON (obj);
accessible = GTK_SCALE_BUTTON_ACCESSIBLE (gtk_widget_get_accessible (GTK_WIDGET (scale_button)));
if (strcmp (pspec->name, "adjustment") == 0)
{
GtkAdjustment* adjustment;
adjustment = gtk_scale_button_get_adjustment (scale_button);
g_signal_connect (adjustment,
"value-changed",
G_CALLBACK (gtk_scale_button_accessible_value_changed),
accessible);
}
else
{
GTK_WIDGET_ACCESSIBLE_CLASS (gtk_scale_button_accessible_parent_class)->notify_gtk (obj, pspec);
}
}
static void
gtk_scale_button_accessible_class_init (GtkScaleButtonAccessibleClass *klass)
{
AtkObjectClass *atk_object_class = ATK_OBJECT_CLASS (klass);
GtkWidgetAccessibleClass *widget_class = GTK_WIDGET_ACCESSIBLE_CLASS (klass);
atk_object_class->initialize = gtk_scale_button_accessible_initialize;
widget_class->notify_gtk = gtk_scale_button_accessible_notify_gtk;
}
static void
gtk_scale_button_accessible_init (GtkScaleButtonAccessible *button)
{
}
static gboolean
gtk_scale_button_accessible_do_action (AtkAction *action,
gint i)
{
GtkWidget *widget;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (action));
if (widget == NULL)
return FALSE;
if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_visible (widget))
return FALSE;
switch (i)
{
case 0:
g_signal_emit_by_name (widget, "popup");
return TRUE;
case 1:
g_signal_emit_by_name (widget, "popdown");
return TRUE;
default:
return FALSE;
}
}
static gint
gtk_scale_button_accessible_get_n_actions (AtkAction *action)
{
return 2;
}
static const gchar *
gtk_scale_button_accessible_get_description (AtkAction *action,
gint i)
{
return NULL;
}
static const gchar *
gtk_scale_button_accessible_action_get_name (AtkAction *action,
gint i)
{
switch (i)
{
case 0:
return "popup";
case 1:
return "popdown";
default:
return NULL;
}
}
static void
atk_action_interface_init (AtkActionIface *iface)
{
iface->do_action = gtk_scale_button_accessible_do_action;
iface->get_n_actions = gtk_scale_button_accessible_get_n_actions;
iface->get_description = gtk_scale_button_accessible_get_description;
iface->get_name = gtk_scale_button_accessible_action_get_name;
}
static void
gtk_scale_button_accessible_get_current_value (AtkValue *obj,
GValue *value)
{
GtkWidget *widget;
GtkAdjustment *adjustment;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
adjustment = gtk_scale_button_get_adjustment (GTK_SCALE_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_scale_button_accessible_get_maximum_value (AtkValue *obj,
GValue *value)
{
GtkWidget *widget;
GtkAdjustment *adjustment;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
adjustment = gtk_scale_button_get_adjustment (GTK_SCALE_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_scale_button_accessible_get_minimum_value (AtkValue *obj,
GValue *value)
{
GtkWidget *widget;
GtkAdjustment *adjustment;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
adjustment = gtk_scale_button_get_adjustment (GTK_SCALE_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_scale_button_accessible_get_minimum_increment (AtkValue *obj,
GValue *value)
{
GtkWidget *widget;
GtkAdjustment *adjustment;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
adjustment = gtk_scale_button_get_adjustment (GTK_SCALE_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_scale_button_accessible_set_current_value (AtkValue *obj,
const GValue *value)
{
GtkWidget *widget;
GtkAdjustment *adjustment;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
adjustment = gtk_scale_button_get_adjustment (GTK_SCALE_BUTTON (widget));
if (adjustment == NULL)
return FALSE;
gtk_adjustment_set_value (adjustment, g_value_get_double (value));
return TRUE;
}
static void
atk_value_interface_init (AtkValueIface *iface)
{
iface->get_current_value = gtk_scale_button_accessible_get_current_value;
iface->get_maximum_value = gtk_scale_button_accessible_get_maximum_value;
iface->get_minimum_value = gtk_scale_button_accessible_get_minimum_value;
iface->get_minimum_increment = gtk_scale_button_accessible_get_minimum_increment;
iface->set_current_value = gtk_scale_button_accessible_set_current_value;
}
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