Pileus Git - ~andy/gtk/blob - gtk/a11y/gtkimagecellaccessible.c

   1 /* GAIL - The GNOME Accessibility Enabling Library
   2  * Copyright 2001 Sun Microsystems Inc.
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include "config.h"
  21
  22 #include <gtk/gtk.h>
  23 #include "gtkimagecellaccessible.h"
  24
  25 static void atk_image_interface_init (AtkImageIface *iface);
  26
  27 G_DEFINE_TYPE_WITH_CODE (GtkImageCellAccessible, _gtk_image_cell_accessible, GTK_TYPE_RENDERER_CELL_ACCESSIBLE,
  28                          G_IMPLEMENT_INTERFACE (ATK_TYPE_IMAGE, atk_image_interface_init))
  29
  30 static void
  31 gtk_image_cell_accessible_finalize (GObject *object)
  32 {
  33   GtkImageCellAccessible *image_cell = GTK_IMAGE_CELL_ACCESSIBLE (object);
  34
  35   g_free (image_cell->image_description);
  36   G_OBJECT_CLASS (_gtk_image_cell_accessible_parent_class)->finalize (object);
  37 }
  38
  39 static void
  40 _gtk_image_cell_accessible_class_init (GtkImageCellAccessibleClass *klass)
  41 {
  42   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
  43
  44   gobject_class->finalize = gtk_image_cell_accessible_finalize;
  45 }
  46
  47 static void
  48 _gtk_image_cell_accessible_init (GtkImageCellAccessible *image_cell)
  49 {
  50   image_cell->image_description = NULL;
  51 }
  52
  53 static const gchar *
  54 gtk_image_cell_accessible_get_image_description (AtkImage *image)
  55 {
  56   GtkImageCellAccessible *image_cell = GTK_IMAGE_CELL_ACCESSIBLE (image);
  57
  58   return image_cell->image_description;
  59 }
  60
  61 static gboolean
  62 gtk_image_cell_accessible_set_image_description (AtkImage    *image,
  63                                                  const gchar *description)
  64 {
  65   GtkImageCellAccessible *image_cell = GTK_IMAGE_CELL_ACCESSIBLE (image);
  66
  67   g_free (image_cell->image_description);
  68   image_cell->image_description = g_strdup (description);
  69
  70   if (image_cell->image_description)
  71     return TRUE;
  72   else
  73     return FALSE;
  74 }
  75
  76 static void
  77 gtk_image_cell_accessible_get_image_position (AtkImage     *image,
  78                                               gint         *x,
  79                                               gint         *y,
  80                                               AtkCoordType  coord_type)
  81 {
  82   atk_component_get_position (ATK_COMPONENT (image), x, y, coord_type);
  83 }
  84
  85 static void
  86 gtk_image_cell_accessible_get_image_size (AtkImage *image,
  87                                           gint     *width,
  88                                           gint     *height)
  89 {
  90   GtkImageCellAccessible *cell = GTK_IMAGE_CELL_ACCESSIBLE (image);
  91   GtkCellRenderer *cell_renderer;
  92   GdkPixbuf *pixbuf = NULL;
  93
  94   *width = 0;
  95   *height = 0;
  96
  97   cell_renderer = GTK_RENDERER_CELL_ACCESSIBLE (cell)->renderer;
  98   g_object_get (GTK_CELL_RENDERER_PIXBUF (cell_renderer),
  99                 "pixbuf", &pixbuf,
 100                 NULL);
 101
 102   if (pixbuf)
 103     {
 104       *width = gdk_pixbuf_get_width (pixbuf);
 105       *height = gdk_pixbuf_get_height (pixbuf);
 106       g_object_unref (pixbuf);
 107     }
 108 }
 109
 110 static void
 111 atk_image_interface_init (AtkImageIface  *iface)
 112 {
 113   iface->get_image_description = gtk_image_cell_accessible_get_image_description;
 114   iface->set_image_description = gtk_image_cell_accessible_set_image_description;
 115   iface->get_image_position = gtk_image_cell_accessible_get_image_position;
 116   iface->get_image_size = gtk_image_cell_accessible_get_image_size;
 117 }