GtkRendererCellAccessible: add a private struct

Move instance fields to a private struct, in preparation
for installing a11y headers.
This also required removing access to GtkRendererCellAccessible innards
from various cell accessible implementations.

gtk/a11y/gtkbooleancellaccessible.c

@@ -105,11 +105,14 @@ gtk_boolean_cell_accessible_update_cache (GtkCellAccessible *cell)
   GtkBooleanCellAccessible *boolean_cell = GTK_BOOLEAN_CELL_ACCESSIBLE (cell);
   gboolean active;
   gboolean sensitive;
+  GtkCellRenderer *renderer;
 
-  g_object_get (G_OBJECT (GTK_RENDERER_CELL_ACCESSIBLE (cell)->renderer),
+  g_object_get (cell, "renderer", &renderer, NULL);
+  g_object_get (renderer,
                 "active", &active,
                 "sensitive", &sensitive,
                 NULL);
+  g_object_unref (renderer);
 
   if (boolean_cell->priv->cell_value != active)
     {

gtk/a11y/gtkimagecellaccessible.c

@@ -101,10 +101,11 @@ gtk_image_cell_accessible_get_image_size (AtkImage *image,
   *width = 0;
   *height = 0;
 
-  cell_renderer = GTK_RENDERER_CELL_ACCESSIBLE (cell)->renderer;
+  g_object_get (cell, "renderer", &cell_renderer, NULL);
-  g_object_get (GTK_CELL_RENDERER_PIXBUF (cell_renderer),
+  g_object_get (cell_renderer,
                 "pixbuf", &pixbuf,
                 NULL);
+  g_object_unref (cell_renderer);
 
   if (pixbuf)
     {

gtk/a11y/gtkrenderercellaccessible.c

@@ -21,6 +21,10 @@
 #include "gtkrenderercellaccessible.h"
 #include "gtkintl.h"
 
+struct _GtkRendererCellAccessiblePrivate
+{
+  GtkCellRenderer *renderer;
+};
 
 enum {
   PROP_0,
@@ -40,7 +44,7 @@ gtk_renderer_cell_accessible_set_property (GObject         *object,
   switch (prop_id)
     {
     case PROP_RENDERER:
-      accessible->renderer = g_value_dup_object (value);
+      accessible->priv->renderer = g_value_dup_object (value);
       break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@@ -59,7 +63,7 @@ gtk_renderer_cell_accessible_get_property (GObject         *object,
   switch (prop_id)
     {
     case PROP_RENDERER:
-      g_value_set_object (value, accessible->renderer);
+      g_value_set_object (value, accessible->priv->renderer);
       break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@@ -72,8 +76,8 @@ gtk_renderer_cell_accessible_finalize (GObject *object)
 {
   GtkRendererCellAccessible *renderer_cell = GTK_RENDERER_CELL_ACCESSIBLE (object);
 
-  if (renderer_cell->renderer)
+  if (renderer_cell->priv->renderer)
-    g_object_unref (renderer_cell->renderer);
+    g_object_unref (renderer_cell->priv->renderer);
 
   G_OBJECT_CLASS (_gtk_renderer_cell_accessible_parent_class)->finalize (object);
 }
@@ -94,11 +98,16 @@ _gtk_renderer_cell_accessible_class_init (GtkRendererCellAccessibleClass *klass)
 							P_("The cell renderer represented by this accessible"),
 							GTK_TYPE_CELL_RENDERER,
 							G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
+
+  g_type_class_add_private (klass, sizeof (GtkRendererCellAccessiblePrivate));
 }
 
 static void
 _gtk_renderer_cell_accessible_init (GtkRendererCellAccessible *renderer_cell)
 {
+  renderer_cell->priv = G_TYPE_INSTANCE_GET_PRIVATE (renderer_cell,
+                                                     GTK_TYPE_RENDERER_CELL_ACCESSIBLE,
+                                                     GtkRendererCellAccessiblePrivate);
 }
 
 AtkObject *

gtk/a11y/gtkrenderercellaccessible.h

@@ -30,13 +30,15 @@ G_BEGIN_DECLS
 #define GTK_IS_RENDERER_CELL_ACCESSIBLE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_RENDERER_CELL_ACCESSIBLE))
 #define GTK_RENDERER_CELL_ACCESSIBLE_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_RENDERER_CELL_ACCESSIBLE, GtkRendererCellAccessibleClass))
 
-typedef struct _GtkRendererCellAccessible      GtkRendererCellAccessible;
+typedef struct _GtkRendererCellAccessible        GtkRendererCellAccessible;
-typedef struct _GtkRendererCellAccessibleClass GtkRendererCellAccessibleClass;
+typedef struct _GtkRendererCellAccessibleClass   GtkRendererCellAccessibleClass;
+typedef struct _GtkRendererCellAccessiblePrivate GtkRendererCellAccessiblePrivate;
 
 struct _GtkRendererCellAccessible
 {
   GtkCellAccessible  parent;
-  GtkCellRenderer   *renderer;
+
+  GtkRendererCellAccessiblePrivate *priv;
 };
 
 struct _GtkRendererCellAccessibleClass

gtk/a11y/gtktextcellaccessible.c

@@ -126,10 +126,13 @@ gtk_text_cell_accessible_update_cache (GtkCellAccessible *cell)
   gboolean rv = FALSE;
   gint temp_length;
   gchar *text;
+  GtkCellRenderer *renderer;
 
-  g_object_get (G_OBJECT (GTK_RENDERER_CELL_ACCESSIBLE (cell)->renderer),
+  g_object_get (cell, "renderer", &renderer, NULL);
+  g_object_get (renderer,
                 "text", &text,
                 NULL);
+  g_object_unref (renderer);
 
   if (text_cell->cell_text)
     {
@@ -392,7 +395,7 @@ create_pango_layout (GtkTextCellAccessible *text)
   GtkCellRendererText *gtk_renderer;
 
   gail_renderer = GTK_RENDERER_CELL_ACCESSIBLE (text);
-  gtk_renderer = GTK_CELL_RENDERER_TEXT (gail_renderer->renderer);
+  g_object_get (gail_renderer, "renderer", &gtk_renderer, NULL);
 
   g_object_get (gtk_renderer,
                 "text", &renderer_text,
@@ -409,6 +412,7 @@ create_pango_layout (GtkTextCellAccessible *text)
                 "rise-set", &rise_set,
                 "rise", &rise,
                 NULL);
+  g_object_unref (gtk_renderer);
 
   layout = gtk_widget_create_pango_layout (get_widget (text), renderer_text);
 
@@ -539,11 +543,14 @@ gtk_text_cell_accessible_get_character_extents (AtkText      *text,
       return;
     }
   gail_renderer = GTK_RENDERER_CELL_ACCESSIBLE (text);
-  gtk_renderer = GTK_CELL_RENDERER_TEXT (gail_renderer->renderer);
+  g_object_get (gail_renderer, "renderer", &gtk_renderer, NULL);
-
   g_object_get (gtk_renderer, "text", &renderer_text, NULL);
+  g_object_unref (gtk_renderer);
   if (renderer_text == NULL)
-    return;
+    {
+      g_object_unref (gtk_renderer);
+      return;
+    }
 
   parent = atk_object_get_parent (ATK_OBJECT (text));
   if (GTK_IS_CONTAINER_CELL_ACCESSIBLE (parent))
@@ -569,7 +576,7 @@ gtk_text_cell_accessible_get_character_extents (AtkText      *text,
   index = g_utf8_offset_to_pointer (renderer_text, offset) - renderer_text;
   pango_layout_index_to_pos (layout, index, &char_rect);
 
-  gtk_cell_renderer_get_padding (gail_renderer->renderer, &xpad, &ypad);
+  gtk_cell_renderer_get_padding (GTK_CELL_RENDERER (gtk_renderer), &xpad, &ypad);
 
   get_origins (widget, &x_window, &y_window, &x_toplevel, &y_toplevel);
 
@@ -593,6 +600,7 @@ gtk_text_cell_accessible_get_character_extents (AtkText      *text,
 
   g_free (renderer_text);
   g_object_unref (layout);
+  g_object_unref (gtk_renderer);
 }
 
 static gint
@@ -620,12 +628,13 @@ gtk_text_cell_accessible_get_offset_at_point (AtkText      *text,
     return -1;
 
   gail_renderer = GTK_RENDERER_CELL_ACCESSIBLE (text);
-  gtk_renderer = GTK_CELL_RENDERER_TEXT (gail_renderer->renderer);
+  g_object_get (gail_renderer, "renderer", &gtk_renderer, NULL);
   parent = atk_object_get_parent (ATK_OBJECT (text));
 
   g_object_get (gtk_renderer, "text", &renderer_text, NULL);
   if (text == NULL)
     {
+      g_object_unref (gtk_renderer);
       g_free (renderer_text);
       return -1;
     }
@@ -651,7 +660,7 @@ gtk_text_cell_accessible_get_offset_at_point (AtkText      *text,
 
   layout = create_pango_layout (GTK_TEXT_CELL_ACCESSIBLE (text));
 
-  gtk_cell_renderer_get_padding (gail_renderer->renderer, &xpad, &ypad);
+  gtk_cell_renderer_get_padding (GTK_CELL_RENDERER (gtk_renderer), &xpad, &ypad);
 
   get_origins (widget, &x_window, &y_window, &x_toplevel, &y_toplevel);
 
@@ -678,6 +687,8 @@ gtk_text_cell_accessible_get_offset_at_point (AtkText      *text,
     }
 
   g_object_unref (layout);
+  g_object_unref (gtk_renderer);
+
   if (index == -1)
     {
       if (coords == ATK_XY_WINDOW || coords == ATK_XY_SCREEN)