[gtk+] GtkImageCellAccessible: add a private struct

[Matthias Clasen <matthiasc src gnome org>]

commit 1ea3979864bbafa7261bfd34297f877b86bf0f48
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Oct 14 19:43:47 2012 -0400

     GtkImageCellAccessible: add a private struct
    
    Move instance fields to a private struct, in preparation
    for installing a11y headers.

 gtk/a11y/gtkimagecellaccessible.c |   21 +++++++++++++++------
 gtk/a11y/gtkimagecellaccessible.h |    8 ++++----
 2 files changed, 19 insertions(+), 10 deletions(-)
---
diff --git a/gtk/a11y/gtkimagecellaccessible.c b/gtk/a11y/gtkimagecellaccessible.c
index 613f58b..9463c9e 100644
--- a/gtk/a11y/gtkimagecellaccessible.c
+++ b/gtk/a11y/gtkimagecellaccessible.c
@@ -20,6 +20,11 @@
 #include <gtk/gtk.h>
 #include "gtkimagecellaccessible.h"
 
+struct _GtkImageCellAccessiblePrivate
+{
+  gchar *image_description;
+};
+
 static void atk_image_interface_init (AtkImageIface *iface);
 
 G_DEFINE_TYPE_WITH_CODE (GtkImageCellAccessible, _gtk_image_cell_accessible, GTK_TYPE_RENDERER_CELL_ACCESSIBLE,
@@ -30,7 +35,7 @@ gtk_image_cell_accessible_finalize (GObject *object)
 {
   GtkImageCellAccessible *image_cell = GTK_IMAGE_CELL_ACCESSIBLE (object);
 
-  g_free (image_cell->image_description);
+  g_free (image_cell->priv->image_description);
   G_OBJECT_CLASS (_gtk_image_cell_accessible_parent_class)->finalize (object);
 }
 
@@ -40,12 +45,16 @@ _gtk_image_cell_accessible_class_init (GtkImageCellAccessibleClass *klass)
   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 
   gobject_class->finalize = gtk_image_cell_accessible_finalize;
+
+  g_type_class_add_private (klass, sizeof (GtkImageCellAccessiblePrivate));
 }
 
 static void
 _gtk_image_cell_accessible_init (GtkImageCellAccessible *image_cell)
 {
-  image_cell->image_description = NULL;
+  image_cell->priv = G_TYPE_INSTANCE_GET_PRIVATE (image_cell,
+                                                  GTK_TYPE_IMAGE_CELL_ACCESSIBLE,
+                                                  GtkImageCellAccessiblePrivate);
 }
 
 static const gchar *
@@ -53,7 +62,7 @@ gtk_image_cell_accessible_get_image_description (AtkImage *image)
 {
   GtkImageCellAccessible *image_cell = GTK_IMAGE_CELL_ACCESSIBLE (image);
 
-  return image_cell->image_description;
+  return image_cell->priv->image_description;
 }
 
 static gboolean
@@ -62,10 +71,10 @@ gtk_image_cell_accessible_set_image_description (AtkImage    *image,
 {
   GtkImageCellAccessible *image_cell = GTK_IMAGE_CELL_ACCESSIBLE (image);
 
-  g_free (image_cell->image_description);
-  image_cell->image_description = g_strdup (description);
+  g_free (image_cell->priv->image_description);
+  image_cell->priv->image_description = g_strdup (description);
 
-  if (image_cell->image_description)
+  if (image_cell->priv->image_description)
     return TRUE;
   else
     return FALSE;
diff --git a/gtk/a11y/gtkimagecellaccessible.h b/gtk/a11y/gtkimagecellaccessible.h
index f777a56..99862cc 100644
--- a/gtk/a11y/gtkimagecellaccessible.h
+++ b/gtk/a11y/gtkimagecellaccessible.h
@@ -30,15 +30,15 @@ G_BEGIN_DECLS
 #define GTK_IS_IMAGE_CELL_ACCESSIBLE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_IMAGE_CELL_ACCESSIBLE))
 #define GTK_IMAGE_CELL_ACCESSIBLE_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_IMAGE_CELL_ACCESSIBLE, GtkImageCellAccessibleClass))
 
-typedef struct _GtkImageCellAccessible      GtkImageCellAccessible;
-typedef struct _GtkImageCellAccessibleClass GtkImageCellAccessibleClass;
+typedef struct _GtkImageCellAccessible        GtkImageCellAccessible;
+typedef struct _GtkImageCellAccessibleClass   GtkImageCellAccessibleClass;
+typedef struct _GtkImageCellAccessiblePrivate GtkImageCellAccessiblePrivate;
 
 struct _GtkImageCellAccessible
 {
   GtkRendererCellAccessible parent;
 
-  gchar            *image_description;
-  gint             x, y;
+  GtkImageCellAccessiblePrivate *priv;
 };
 
 struct _GtkImageCellAccessibleClass