gtk2/gtk/a11y/gtkimagecellaccessible.c
Matthias Clasen 1090eba9a8 a11y: don't return random numbers
Return 0 for the image size if we don't have a pixbuf to measure.
2011-08-29 10:50:01 -04:00

156 lines
4.7 KiB
C

/* GAIL - The GNOME Accessibility Enabling Library
* Copyright 2001 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <gtk/gtk.h>
#include "gtkimagecellaccessible.h"
static gchar *property_list[] = {
"pixbuf",
NULL
};
static void atk_image_interface_init (AtkImageIface *iface);
G_DEFINE_TYPE_WITH_CODE (GtkImageCellAccessible, _gtk_image_cell_accessible, GTK_TYPE_RENDERER_CELL_ACCESSIBLE,
G_IMPLEMENT_INTERFACE (ATK_TYPE_IMAGE, atk_image_interface_init))
static void
gtk_image_cell_accessible_finalize (GObject *object)
{
GtkImageCellAccessible *image_cell = GTK_IMAGE_CELL_ACCESSIBLE (object);
g_free (image_cell->image_description);
G_OBJECT_CLASS (_gtk_image_cell_accessible_parent_class)->finalize (object);
}
static gboolean
gtk_image_cell_accessible_update_cache (GtkRendererCellAccessible *cell,
gboolean emit_change_signal)
{
return FALSE;
}
static void
_gtk_image_cell_accessible_class_init (GtkImageCellAccessibleClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GtkRendererCellAccessibleClass *renderer_cell_class = GTK_RENDERER_CELL_ACCESSIBLE_CLASS (klass);
gobject_class->finalize = gtk_image_cell_accessible_finalize;
renderer_cell_class->update_cache = gtk_image_cell_accessible_update_cache;
renderer_cell_class->property_list = property_list;
}
AtkObject *
_gtk_image_cell_accessible_new (void)
{
GObject *object;
AtkObject *atk_object;
GtkRendererCellAccessible *cell;
object = g_object_new (GTK_TYPE_IMAGE_CELL_ACCESSIBLE, NULL);
g_return_val_if_fail (object != NULL, NULL);
atk_object = ATK_OBJECT (object);
atk_object->role = ATK_ROLE_TABLE_CELL;
cell = GTK_RENDERER_CELL_ACCESSIBLE (object);
cell->renderer = gtk_cell_renderer_pixbuf_new ();
g_object_ref_sink (cell->renderer);
return atk_object;
}
static void
_gtk_image_cell_accessible_init (GtkImageCellAccessible *image_cell)
{
image_cell->image_description = NULL;
}
static const gchar *
gtk_image_cell_accessible_get_image_description (AtkImage *image)
{
GtkImageCellAccessible *image_cell = GTK_IMAGE_CELL_ACCESSIBLE (image);
return image_cell->image_description;
}
static gboolean
gtk_image_cell_accessible_set_image_description (AtkImage *image,
const gchar *description)
{
GtkImageCellAccessible *image_cell = GTK_IMAGE_CELL_ACCESSIBLE (image);
g_free (image_cell->image_description);
image_cell->image_description = g_strdup (description);
if (image_cell->image_description)
return TRUE;
else
return FALSE;
}
static void
gtk_image_cell_accessible_get_image_position (AtkImage *image,
gint *x,
gint *y,
AtkCoordType coord_type)
{
atk_component_get_position (ATK_COMPONENT (image), x, y, coord_type);
}
static void
gtk_image_cell_accessible_get_image_size (AtkImage *image,
gint *width,
gint *height)
{
GtkImageCellAccessible *cell = GTK_IMAGE_CELL_ACCESSIBLE (image);
GtkCellRenderer *cell_renderer;
GdkPixbuf *pixbuf = NULL;
*width = 0;
*height = 0;
cell_renderer = GTK_RENDERER_CELL_ACCESSIBLE (cell)->renderer;
g_object_get (GTK_CELL_RENDERER_PIXBUF (cell_renderer),
"pixbuf", &pixbuf,
NULL);
if (pixbuf)
{
*width = gdk_pixbuf_get_width (pixbuf);
*height = gdk_pixbuf_get_height (pixbuf);
g_object_unref (pixbuf);
}
}
static void
atk_image_interface_init (AtkImageIface *iface)
{
iface->get_image_description = gtk_image_cell_accessible_get_image_description;
iface->set_image_description = gtk_image_cell_accessible_set_image_description;
iface->get_image_position = gtk_image_cell_accessible_get_image_position;
iface->get_image_size = gtk_image_cell_accessible_get_image_size;
}