gtk2/gtk/a11y/gtkpictureaccessible.c

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/*
* Copyright © 2018 Benjamin Otte
*
* 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 2.1 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/>.
*
* Authors: Benjamin Otte <otte@gnome.org>
*/
#include "config.h"
#include "gtkpictureaccessibleprivate.h"
#include "gtkpicture.h"
struct _GtkPictureAccessible
{
GtkWidgetAccessible parent_instance;
};
struct _GtkPictureAccessibleClass
{
GtkWidgetAccessibleClass parent_class;
};
static const gchar *
gtk_picture_accessible_get_image_description (AtkImage *image)
{
GtkWidget* widget;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (image));
if (widget == NULL)
return NULL;
return gtk_picture_get_alternative_text (GTK_PICTURE (widget));
}
static void
gtk_picture_accessible_get_image_position (AtkImage *image,
gint *x,
gint *y,
AtkCoordType coord_type)
{
atk_component_get_extents (ATK_COMPONENT (image), x, y, NULL, NULL,
coord_type);
}
static void
gtk_picture_accessible_get_image_size (AtkImage *image,
gint *width,
gint *height)
{
GtkWidget* widget;
GdkPaintable *paintable;
*width = -1;
*height = -1;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (image));
if (widget == NULL)
return;
paintable = gtk_picture_get_paintable (GTK_PICTURE (widget));
if (paintable == NULL)
return;
*width = gdk_paintable_get_intrinsic_width (paintable);
if (*width == 0)
*width = -1;
*height = gdk_paintable_get_intrinsic_height (paintable);
if (*height == 0)
*height = -1;
}
static void
gtk_picture_accessible_image_init (AtkImageIface *iface)
{
iface->get_image_description = gtk_picture_accessible_get_image_description;
iface->get_image_position = gtk_picture_accessible_get_image_position;
iface->get_image_size = gtk_picture_accessible_get_image_size;
}
G_DEFINE_TYPE_WITH_CODE (GtkPictureAccessible, gtk_picture_accessible, GTK_TYPE_WIDGET_ACCESSIBLE,
G_IMPLEMENT_INTERFACE (ATK_TYPE_IMAGE, gtk_picture_accessible_image_init))
static void
gtk_picture_accessible_initialize (AtkObject *accessible,
gpointer data)
{
ATK_OBJECT_CLASS (gtk_picture_accessible_parent_class)->initialize (accessible, data);
accessible->role = ATK_ROLE_IMAGE;
}
static const gchar *
gtk_picture_accessible_get_name (AtkObject *accessible)
{
GtkWidget* widget;
const gchar *name;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (accessible));
if (widget == NULL)
return NULL;
name = ATK_OBJECT_CLASS (gtk_picture_accessible_parent_class)->get_name (accessible);
if (name)
return name;
return gtk_picture_get_alternative_text (GTK_PICTURE (widget));
}
static void
gtk_picture_accessible_class_init (GtkPictureAccessibleClass *klass)
{
AtkObjectClass *atkobject_class = ATK_OBJECT_CLASS (klass);
atkobject_class->initialize = gtk_picture_accessible_initialize;
atkobject_class->get_name = gtk_picture_accessible_get_name;
}
static void
gtk_picture_accessible_init (GtkPictureAccessible *image)
{
}