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

   1 /* GAIL - The GNOME Accessibility Implementation 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 <string.h>
  23 #include <gtk/gtk.h>
  24 #include "gtkimageaccessible.h"
  25
  26
  27 static void atk_image_interface_init (AtkImageIface  *iface);
  28
  29 G_DEFINE_TYPE_WITH_CODE (GtkImageAccessible, _gtk_image_accessible, GTK_TYPE_WIDGET_ACCESSIBLE,
  30                          G_IMPLEMENT_INTERFACE (ATK_TYPE_IMAGE, atk_image_interface_init))
  31
  32 static void
  33 gtk_image_accessible_initialize (AtkObject *accessible,
  34                                  gpointer   data)
  35 {
  36   ATK_OBJECT_CLASS (_gtk_image_accessible_parent_class)->initialize (accessible, data);
  37
  38   accessible->role = ATK_ROLE_ICON;
  39 }
  40
  41 static void
  42 gtk_image_accessible_finalize (GObject *object)
  43 {
  44   GtkImageAccessible *aimage = GTK_IMAGE_ACCESSIBLE (object);
  45
  46   g_free (aimage->image_description);
  47   g_free (aimage->stock_name);
  48
  49   G_OBJECT_CLASS (_gtk_image_accessible_parent_class)->finalize (object);
  50 }
  51
  52 static const gchar *
  53 gtk_image_accessible_get_name (AtkObject *accessible)
  54 {
  55   GtkWidget* widget;
  56   GtkImage *image;
  57   GtkImageAccessible *image_accessible;
  58   GtkStockItem stock_item;
  59   gchar *stock_id;
  60   const gchar *name;
  61
  62   widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (accessible));
  63   if (widget == NULL)
  64     return NULL;
  65
  66   name = ATK_OBJECT_CLASS (_gtk_image_accessible_parent_class)->get_name (accessible);
  67   if (name)
  68     return name;
  69
  70   image = GTK_IMAGE (widget);
  71   image_accessible = GTK_IMAGE_ACCESSIBLE (accessible);
  72
  73   g_free (image_accessible->stock_name);
  74   image_accessible->stock_name = NULL;
  75
  76   if (gtk_image_get_storage_type (image) != GTK_IMAGE_STOCK)
  77     return NULL;
  78
  79   gtk_image_get_stock (image, &stock_id, NULL);
  80   if (stock_id == NULL)
  81     return NULL;
  82
  83   if (!gtk_stock_lookup (stock_id, &stock_item))
  84     return NULL;
  85
  86   image_accessible->stock_name = _gtk_toolbar_elide_underscores (stock_item.label);
  87   return image_accessible->stock_name;
  88 }
  89
  90 static void
  91 _gtk_image_accessible_class_init (GtkImageAccessibleClass *klass)
  92 {
  93   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
  94   AtkObjectClass  *class = ATK_OBJECT_CLASS (klass);
  95
  96   gobject_class->finalize = gtk_image_accessible_finalize;
  97   class->initialize = gtk_image_accessible_initialize;
  98   class->get_name = gtk_image_accessible_get_name;
  99 }
 100
 101 static void
 102 _gtk_image_accessible_init (GtkImageAccessible *image)
 103 {
 104 }
 105
 106 static const gchar *
 107 gtk_image_accessible_get_image_description (AtkImage *image)
 108 {
 109   GtkImageAccessible *accessible = GTK_IMAGE_ACCESSIBLE (image);
 110
 111   return accessible->image_description;
 112 }
 113
 114 static void
 115 gtk_image_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_accessible_get_image_size (AtkImage *image,
 125                                      gint     *width,
 126                                      gint     *height)
 127 {
 128   GtkWidget* widget;
 129   GtkImage *gtk_image;
 130   GtkImageType image_type;
 131
 132   widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (image));
 133   if (widget == NULL)
 134     {
 135       *height = -1;
 136       *width = -1;
 137       return;
 138     }
 139
 140   gtk_image = GTK_IMAGE (widget);
 141
 142   image_type = gtk_image_get_storage_type (gtk_image);
 143   switch (image_type)
 144     {
 145     case GTK_IMAGE_PIXBUF:
 146       {
 147         GdkPixbuf *pixbuf;
 148
 149         pixbuf = gtk_image_get_pixbuf (gtk_image);
 150         *height = gdk_pixbuf_get_height (pixbuf);
 151         *width = gdk_pixbuf_get_width (pixbuf);
 152         break;
 153       }
 154     case GTK_IMAGE_STOCK:
 155     case GTK_IMAGE_ICON_SET:
 156     case GTK_IMAGE_ICON_NAME:
 157     case GTK_IMAGE_GICON:
 158       {
 159         GtkIconSize size;
 160         GtkSettings *settings;
 161
 162         settings = gtk_settings_get_for_screen (gtk_widget_get_screen (widget));
 163
 164         g_object_get (gtk_image, "icon-size", &size, NULL);
 165         gtk_icon_size_lookup_for_settings (settings, size, width, height);
 166         break;
 167       }
 168     case GTK_IMAGE_ANIMATION:
 169       {
 170         GdkPixbufAnimation *animation;
 171
 172         animation = gtk_image_get_animation (gtk_image);
 173         *height = gdk_pixbuf_animation_get_height (animation);
 174         *width = gdk_pixbuf_animation_get_width (animation);
 175         break;
 176       }
 177     default:
 178       {
 179         *height = -1;
 180         *width = -1;
 181         break;
 182       }
 183     }
 184 }
 185
 186 static gboolean
 187 gtk_image_accessible_set_image_description (AtkImage    *image,
 188                                             const gchar *description)
 189 {
 190   GtkImageAccessible* accessible = GTK_IMAGE_ACCESSIBLE (image);
 191
 192   g_free (accessible->image_description);
 193   accessible->image_description = g_strdup (description);
 194
 195   return TRUE;
 196 }
 197
 198 static void
 199 atk_image_interface_init (AtkImageIface *iface)
 200 {
 201   iface->get_image_description = gtk_image_accessible_get_image_description;
 202   iface->get_image_position = gtk_image_accessible_get_image_position;
 203   iface->get_image_size = gtk_image_accessible_get_image_size;
 204   iface->set_image_description = gtk_image_accessible_set_image_description;
 205 }