e4b5e94eb9
This commit exposes the get_type() functions and standard headers for accessible implementations. This makes it possible to derive from the GTK accessible implementations without GType magic tricks. This is necessary, because we require the a11y type hierarchy to be parallel to the widget type hierarchy. So, if you derive a widget and need to adjust its a11y implementation, you have to be able to derive its accessible implementation. This commit probably exposes more than is absolutely necessary, it also exposes accessibles of widgets that are unlikely candidates for deriving from.
126 lines
4.0 KiB
C
126 lines
4.0 KiB
C
/* GAIL - The GNOME Accessibility Enabling Library
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* Copyright 2001 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 <gtk/gtk.h>
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#include "gtkimagecellaccessible.h"
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struct _GtkImageCellAccessiblePrivate
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{
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gchar *image_description;
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};
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static void atk_image_interface_init (AtkImageIface *iface);
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G_DEFINE_TYPE_WITH_CODE (GtkImageCellAccessible, gtk_image_cell_accessible, GTK_TYPE_RENDERER_CELL_ACCESSIBLE,
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G_IMPLEMENT_INTERFACE (ATK_TYPE_IMAGE, atk_image_interface_init))
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static void
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gtk_image_cell_accessible_finalize (GObject *object)
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{
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GtkImageCellAccessible *image_cell = GTK_IMAGE_CELL_ACCESSIBLE (object);
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g_free (image_cell->priv->image_description);
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G_OBJECT_CLASS (gtk_image_cell_accessible_parent_class)->finalize (object);
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}
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static void
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gtk_image_cell_accessible_class_init (GtkImageCellAccessibleClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->finalize = gtk_image_cell_accessible_finalize;
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g_type_class_add_private (klass, sizeof (GtkImageCellAccessiblePrivate));
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}
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static void
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gtk_image_cell_accessible_init (GtkImageCellAccessible *image_cell)
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{
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image_cell->priv = G_TYPE_INSTANCE_GET_PRIVATE (image_cell,
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GTK_TYPE_IMAGE_CELL_ACCESSIBLE,
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GtkImageCellAccessiblePrivate);
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}
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static const gchar *
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gtk_image_cell_accessible_get_image_description (AtkImage *image)
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{
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GtkImageCellAccessible *image_cell = GTK_IMAGE_CELL_ACCESSIBLE (image);
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return image_cell->priv->image_description;
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}
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static gboolean
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gtk_image_cell_accessible_set_image_description (AtkImage *image,
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const gchar *description)
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{
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GtkImageCellAccessible *image_cell = GTK_IMAGE_CELL_ACCESSIBLE (image);
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g_free (image_cell->priv->image_description);
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image_cell->priv->image_description = g_strdup (description);
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if (image_cell->priv->image_description)
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return TRUE;
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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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gtk_image_cell_accessible_get_image_position (AtkImage *image,
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gint *x,
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gint *y,
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AtkCoordType coord_type)
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{
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atk_component_get_position (ATK_COMPONENT (image), x, y, coord_type);
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}
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static void
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gtk_image_cell_accessible_get_image_size (AtkImage *image,
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gint *width,
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gint *height)
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{
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GtkImageCellAccessible *cell = GTK_IMAGE_CELL_ACCESSIBLE (image);
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GtkCellRenderer *cell_renderer;
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GdkPixbuf *pixbuf = NULL;
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*width = 0;
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*height = 0;
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g_object_get (cell, "renderer", &cell_renderer, NULL);
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g_object_get (cell_renderer,
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"pixbuf", &pixbuf,
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NULL);
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g_object_unref (cell_renderer);
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if (pixbuf)
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{
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*width = gdk_pixbuf_get_width (pixbuf);
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*height = gdk_pixbuf_get_height (pixbuf);
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g_object_unref (pixbuf);
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}
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}
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static void
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atk_image_interface_init (AtkImageIface *iface)
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{
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iface->get_image_description = gtk_image_cell_accessible_get_image_description;
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iface->set_image_description = gtk_image_cell_accessible_set_image_description;
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iface->get_image_position = gtk_image_cell_accessible_get_image_position;
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iface->get_image_size = gtk_image_cell_accessible_get_image_size;
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}
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