overlay: add initial version of gtkoverlay

1 files changed, 79 insertions, 0 deletions

diff --git a/gtk/gtkoverlay.h b/gtk/gtkoverlay.h
new file mode 100644
index 0000000000..baa0e57bcf
--- /dev/null
+++ b/gtk/gtkoverlay.h
@@ -0,0 +1,79 @@
+/*
+ * 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, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
+#error "Only <gtk/gtk.h> can be included directly."
+#endif
+
+#ifndef __GTK_OVERLAY_H__
+#define __GTK_OVERLAY_H__
+
+#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;
+};
+
+struct _GtkOverlayClass
+{
+  GtkBinClass parent_class;
+
+  gboolean (*get_child_position) (GtkOverlay    *overlay,
+                                  GtkWidget     *widget,
+                                  GtkAllocation *allocation);
+
+  /* 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);
+};
+
+GType      gtk_overlay_get_type    (void) G_GNUC_CONST;
+
+GtkWidget *gtk_overlay_new         (void);
+void       gtk_overlay_add_overlay (GtkOverlay *overlay,
+                                    GtkWidget  *widget);
+
+G_END_DECLS
+
+#endif /* __GTK_OVERLAY_H__ */