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diff --git a/Source/DirectFB/wm/unique/stret_iteration.h b/Source/DirectFB/wm/unique/stret_iteration.h
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+/*
+   (c) Copyright 2001-2009  The world wide DirectFB Open Source Community (directfb.org)
+   (c) Copyright 2000-2004  Convergence (integrated media) GmbH
+
+   All rights reserved.
+
+   Written by Denis Oliver Kropp <dok@directfb.org>,
+              Andreas Hundt <andi@fischlustig.de>,
+              Sven Neumann <neo@directfb.org>,
+              Ville Syrjälä <syrjala@sci.fi> and
+              Claudio Ciccani <klan@users.sf.net>.
+
+   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.
+*/
+
+#ifndef __UNIQUE__STRET_ITERATION_H__
+#define __UNIQUE__STRET_ITERATION_H__
+
+#include <directfb.h>
+
+#include <unique/types.h>
+
+
+#define STRET_ITERATION_MAX_DEPTH  4
+
+typedef struct {
+     StretRegion *region;
+     int          level;
+     int          index;
+} StretIterationStackFrame;
+
+typedef struct {
+     int                       magic;
+
+     StretIterationStackFrame  stack[STRET_ITERATION_MAX_DEPTH];
+     int                       frame;
+
+     int                       x0;
+     int                       y0;
+
+     StretRegion              *abort;
+} StretIteration;
+
+
+void         stret_iteration_init ( StretIteration  *iteration,
+                                    StretRegion     *region,
+                                    StretRegion     *abort_at );
+
+StretRegion *stret_iteration_next ( StretIteration  *iteration,
+                                    const DFBRegion *clip );
+
+void         stret_iteration_abort( StretIteration  *iteration );
+
+#endif
+