text: /*
   * gtkoverlay.h
   * This file is part of gtk
   *
   * Copyright (C) 2011 - Ignacio Casal Quinteiro
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library. If not, see <http://www.gnu.org/licenses/>.
   */
  
  #ifndef __GTK_OVERLAY_H__
  #define __GTK_OVERLAY_H__
  
  #if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
  #error "Only <gtk/gtk.h> can be included directly."
  #endif
  
  #include <gtk/gtkbin.h>
  
  G_BEGIN_DECLS
  
  #define GTK_TYPE_OVERLAY             (gtk_overlay_get_type ())
  #define GTK_OVERLAY(obj)             (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_OVERLAY, GtkOverlay))
  #define GTK_OVERLAY_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_OVERLAY, GtkOverlayClass))
  #define GTK_IS_OVERLAY(obj)          (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_OVERLAY))
  #define GTK_IS_OVERLAY_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_OVERLAY))
  #define GTK_OVERLAY_GET_CLASS(obj)   (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_OVERLAY, GtkOverlayClass))
  
  typedef struct _GtkOverlay         GtkOverlay;
  typedef struct _GtkOverlayClass    GtkOverlayClass;
  typedef struct _GtkOverlayPrivate  GtkOverlayPrivate;
  
  struct _GtkOverlay
  {
    GtkBin parent;
  
    GtkOverlayPrivate *priv;
  };
  
  /**
   * GtkOverlayClass:
   * @parent_class: The parent class.
   * @get_child_position: Signal emitted to determine the position and
   *    size of any overlay child widgets.
   */
  struct _GtkOverlayClass
  {
    GtkBinClass parent_class;
  
    /*< public >*/
  
    gboolean (*get_child_position) (GtkOverlay    *overlay,
                                    GtkWidget     *widget,
                                    GtkAllocation *allocation);
  
    /*< private >*/
  
    /* Padding for future expansion */
    void (*_gtk_reserved1) (void);
    void (*_gtk_reserved2) (void);
    void (*_gtk_reserved3) (void);
    void (*_gtk_reserved4) (void);
    void (*_gtk_reserved5) (void);
    void (*_gtk_reserved6) (void);
    void (*_gtk_reserved7) (void);
    void (*_gtk_reserved8) (void);
  };
  
  GDK_AVAILABLE_IN_3_2
  GType      gtk_overlay_get_type    (void) G_GNUC_CONST;
  GDK_AVAILABLE_IN_3_2
  GtkWidget *gtk_overlay_new         (void);
  GDK_AVAILABLE_IN_3_2
  void       gtk_overlay_add_overlay (GtkOverlay *overlay,
                                      GtkWidget  *widget);
  GDK_AVAILABLE_IN_3_18
  void       gtk_overlay_reorder_overlay (GtkOverlay *overlay,
                                          GtkWidget  *child,
                                          int         index_);
  GDK_AVAILABLE_IN_3_18
  gboolean   gtk_overlay_get_overlay_pass_through (GtkOverlay *overlay,
  						 GtkWidget  *widget);
  GDK_AVAILABLE_IN_3_18
  void       gtk_overlay_set_overlay_pass_through (GtkOverlay *overlay,
  						 GtkWidget  *widget,
  						 gboolean    pass_through);
  
  G_END_DECLS
  
  #endif /* __GTK_OVERLAY_H__ */
  