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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
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