153 lines
4.4 KiB
C
153 lines
4.4 KiB
C
/* GTK+ - accessibility implementations
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* Copyright 2001, 2002, 2003 Sun Microsystems Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <string.h>
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#include <gtk/gtk.h>
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#include "gtkpanedaccessible.h"
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static void atk_value_interface_init (AtkValueIface *iface);
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G_DEFINE_TYPE_WITH_CODE (GtkPanedAccessible, gtk_paned_accessible, GTK_TYPE_CONTAINER_ACCESSIBLE,
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G_IMPLEMENT_INTERFACE (ATK_TYPE_VALUE, atk_value_interface_init))
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static void
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gtk_paned_accessible_size_allocate_gtk (GtkWidget *widget,
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GtkAllocation *allocation)
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{
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AtkObject *obj = gtk_widget_get_accessible (widget);
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g_object_notify (G_OBJECT (obj), "accessible-value");
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}
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static void
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gtk_paned_accessible_initialize (AtkObject *obj,
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gpointer data)
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{
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ATK_OBJECT_CLASS (gtk_paned_accessible_parent_class)->initialize (obj, data);
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g_signal_connect (data, "size-allocate",
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G_CALLBACK (gtk_paned_accessible_size_allocate_gtk), NULL);
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obj->role = ATK_ROLE_SPLIT_PANE;
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}
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static void
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gtk_paned_accessible_class_init (GtkPanedAccessibleClass *klass)
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{
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AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
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class->initialize = gtk_paned_accessible_initialize;
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}
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static void
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gtk_paned_accessible_init (GtkPanedAccessible *paned)
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{
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}
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static void
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gtk_paned_accessible_get_current_value (AtkValue *obj,
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GValue *value)
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{
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GtkWidget* widget;
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gint current_value;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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if (widget == NULL)
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return;
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current_value = gtk_paned_get_position (GTK_PANED (widget));
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memset (value, 0, sizeof (GValue));
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g_value_init (value, G_TYPE_INT);
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g_value_set_int (value, current_value);
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}
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static void
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gtk_paned_accessible_get_maximum_value (AtkValue *obj,
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GValue *value)
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{
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GtkWidget* widget;
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gint maximum_value;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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if (widget == NULL)
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return;
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g_object_get (GTK_PANED (widget),
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"max-position", &maximum_value,
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NULL);
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memset (value, 0, sizeof (GValue));
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g_value_init (value, G_TYPE_INT);
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g_value_set_int (value, maximum_value);
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}
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static void
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gtk_paned_accessible_get_minimum_value (AtkValue *obj,
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GValue *value)
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{
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GtkWidget* widget;
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gint minimum_value;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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if (widget == NULL)
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return;
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g_object_get (GTK_PANED (widget),
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"min-position", &minimum_value,
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NULL);
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memset (value, 0, sizeof (GValue));
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g_value_init (value, G_TYPE_INT);
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g_value_set_int (value, minimum_value);
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}
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/* Calling atk_value_set_current_value() is no guarantee that the value
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* is acceptable; it is necessary to listen for accessible-value signals
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* and check whether the current value has been changed or check what the
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* maximum and minimum values are.
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*/
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static gboolean
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gtk_paned_accessible_set_current_value (AtkValue *obj,
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const GValue *value)
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{
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GtkWidget* widget;
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gint new_value;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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if (widget == NULL)
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return FALSE;
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if (G_VALUE_HOLDS_INT (value))
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{
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new_value = g_value_get_int (value);
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gtk_paned_set_position (GTK_PANED (widget), new_value);
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return TRUE;
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}
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else
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return FALSE;
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}
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static void
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atk_value_interface_init (AtkValueIface *iface)
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{
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iface->get_current_value = gtk_paned_accessible_get_current_value;
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iface->get_maximum_value = gtk_paned_accessible_get_maximum_value;
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iface->get_minimum_value = gtk_paned_accessible_get_minimum_value;
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iface->set_current_value = gtk_paned_accessible_set_current_value;
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}
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