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 gchar *property_list[] = {
  26   "pixbuf",
  27   NULL
  28 };
  29
  30 static void atk_image_interface_init (AtkImageIface *iface);
  31
  32 G_DEFINE_TYPE_WITH_CODE (GtkImageCellAccessible, _gtk_image_cell_accessible, GTK_TYPE_RENDERER_CELL_ACCESSIBLE,
  33                          G_IMPLEMENT_INTERFACE (ATK_TYPE_IMAGE, atk_image_interface_init))
  34
  35 static void
  36 gtk_image_cell_accessible_finalize (GObject *object)
  37 {
  38   GtkImageCellAccessible *image_cell = GTK_IMAGE_CELL_ACCESSIBLE (object);
  39
  40   g_free (image_cell->image_description);
  41   G_OBJECT_CLASS (_gtk_image_cell_accessible_parent_class)->finalize (object);
  42 }
  43
  44 static gboolean
  45 gtk_image_cell_accessible_update_cache (GtkRendererCellAccessible *cell,
  46                                         gboolean                   emit_change_signal)
  47 {
  48   return FALSE;
  49 }
  50
  51 static void
  52 _gtk_image_cell_accessible_class_init (GtkImageCellAccessibleClass *klass)
  53 {
  54   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
  55   GtkRendererCellAccessibleClass *renderer_cell_class = GTK_RENDERER_CELL_ACCESSIBLE_CLASS (klass);
  56
  57   gobject_class->finalize = gtk_image_cell_accessible_finalize;
  58
  59   renderer_cell_class->update_cache = gtk_image_cell_accessible_update_cache;
  60   renderer_cell_class->property_list = property_list;
  61 }
  62
  63 static void
  64 _gtk_image_cell_accessible_init (GtkImageCellAccessible *image_cell)
  65 {
  66   image_cell->image_description = NULL;
  67 }
  68
  69 static const gchar *
  70 gtk_image_cell_accessible_get_image_description (AtkImage *image)
  71 {
  72   GtkImageCellAccessible *image_cell = GTK_IMAGE_CELL_ACCESSIBLE (image);
  73
  74   return image_cell->image_description;
  75 }
  76
  77 static gboolean
  78 gtk_image_cell_accessible_set_image_description (AtkImage    *image,
  79                                                  const gchar *description)
  80 {
  81   GtkImageCellAccessible *image_cell = GTK_IMAGE_CELL_ACCESSIBLE (image);
  82
  83   g_free (image_cell->image_description);
  84   image_cell->image_description = g_strdup (description);
  85
  86   if (image_cell->image_description)
  87     return TRUE;
  88   else
  89     return FALSE;
  90 }
  91
  92 static void
  93 gtk_image_cell_accessible_get_image_position (AtkImage     *image,
  94                                               gint         *x,
  95                                               gint         *y,
  96                                               AtkCoordType  coord_type)
  97 {
  98   atk_component_get_position (ATK_COMPONENT (image), x, y, coord_type);
  99 }
 100
 101 static void
 102 gtk_image_cell_accessible_get_image_size (AtkImage *image,
 103                                           gint     *width,
 104                                           gint     *height)
 105 {
 106   GtkImageCellAccessible *cell = GTK_IMAGE_CELL_ACCESSIBLE (image);
 107   GtkCellRenderer *cell_renderer;
 108   GdkPixbuf *pixbuf = NULL;
 109
 110   *width = 0;
 111   *height = 0;
 112
 113   cell_renderer = GTK_RENDERER_CELL_ACCESSIBLE (cell)->renderer;
 114   g_object_get (GTK_CELL_RENDERER_PIXBUF (cell_renderer),
 115                 "pixbuf", &pixbuf,
 116                 NULL);
 117
 118   if (pixbuf)
 119     {
 120       *width = gdk_pixbuf_get_width (pixbuf);
 121       *height = gdk_pixbuf_get_height (pixbuf);
 122       g_object_unref (pixbuf);
 123     }
 124 }
 125
 126 static void
 127 atk_image_interface_init (AtkImageIface  *iface)
 128 {
 129   iface->get_image_description = gtk_image_cell_accessible_get_image_description;
 130   iface->set_image_description = gtk_image_cell_accessible_set_image_description;
 131   iface->get_image_position = gtk_image_cell_accessible_get_image_position;
 132   iface->get_image_size = gtk_image_cell_accessible_get_image_size;
 133 }