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 AtkObject *
  64 _gtk_image_cell_accessible_new (void)
  65 {
  66   GObject *object;
  67   AtkObject *atk_object;
  68   GtkRendererCellAccessible *cell;
  69
  70   object = g_object_new (GTK_TYPE_IMAGE_CELL_ACCESSIBLE, NULL);
  71
  72   g_return_val_if_fail (object != NULL, NULL);
  73
  74   atk_object = ATK_OBJECT (object);
  75   atk_object->role = ATK_ROLE_TABLE_CELL;
  76
  77   cell = GTK_RENDERER_CELL_ACCESSIBLE (object);
  78
  79   cell->renderer = gtk_cell_renderer_pixbuf_new ();
  80   g_object_ref_sink (cell->renderer);
  81
  82   return atk_object;
  83 }
  84
  85 static void
  86 _gtk_image_cell_accessible_init (GtkImageCellAccessible *image_cell)
  87 {
  88   image_cell->image_description = NULL;
  89 }
  90
  91 static const gchar *
  92 gtk_image_cell_accessible_get_image_description (AtkImage *image)
  93 {
  94   GtkImageCellAccessible *image_cell = GTK_IMAGE_CELL_ACCESSIBLE (image);
  95
  96   return image_cell->image_description;
  97 }
  98
  99 static gboolean
 100 gtk_image_cell_accessible_set_image_description (AtkImage    *image,
 101                                                  const gchar *description)
 102 {
 103   GtkImageCellAccessible *image_cell = GTK_IMAGE_CELL_ACCESSIBLE (image);
 104
 105   g_free (image_cell->image_description);
 106   image_cell->image_description = g_strdup (description);
 107
 108   if (image_cell->image_description)
 109     return TRUE;
 110   else
 111     return FALSE;
 112 }
 113
 114 static void
 115 gtk_image_cell_accessible_get_image_position (AtkImage     *image,
 116                                               gint         *x,
 117                                               gint         *y,
 118                                               AtkCoordType  coord_type)
 119 {
 120   atk_component_get_position (ATK_COMPONENT (image), x, y, coord_type);
 121 }
 122
 123 static void
 124 gtk_image_cell_accessible_get_image_size (AtkImage *image,
 125                                           gint     *width,
 126                                           gint     *height)
 127 {
 128   GtkImageCellAccessible *cell = GTK_IMAGE_CELL_ACCESSIBLE (image);
 129   GtkCellRenderer *cell_renderer;
 130   GdkPixbuf *pixbuf = NULL;
 131
 132   cell_renderer = GTK_RENDERER_CELL_ACCESSIBLE (cell)->renderer;
 133   g_object_get (GTK_CELL_RENDERER_PIXBUF (cell_renderer),
 134                 "pixbuf", &pixbuf,
 135                 NULL);
 136
 137   if (pixbuf)
 138     {
 139       *width = gdk_pixbuf_get_width (pixbuf);
 140       *height = gdk_pixbuf_get_height (pixbuf);
 141       g_object_unref (pixbuf);
 142     }
 143 }
 144
 145 static void
 146 atk_image_interface_init (AtkImageIface  *iface)
 147 {
 148   iface->get_image_description = gtk_image_cell_accessible_get_image_description;
 149   iface->set_image_description = gtk_image_cell_accessible_set_image_description;
 150   iface->get_image_position = gtk_image_cell_accessible_get_image_position;
 151   iface->get_image_size = gtk_image_cell_accessible_get_image_size;
 152 }