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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: laycache.hxx,v $
* $Revision: 1.5 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef _LAYCACHE_HXX
#define _LAYCACHE_HXX
#include <tools/solar.h>
class SwDoc;
class SwLayCacheImpl;
class SvStream;
/*************************************************************************
* class SwLayoutCache
*
* This class allows to save layout information in the file and it contains
* this information after loading of a file.
* Call Write(..) with a stream and the document to save and the page break
* information of the document will be written.
* Call Read(..) with a stream and the member pLayCacheImpl will
* read the information from the stream and store it in an internal structur.
* There's a simple locking mechanism at these classes,
* if somebody reads the information, he increments the lock count by 1,
* during the Read(..) function the lock count will set to $8000.
*
**************************************************************************/
class SwLayoutCache
{
SwLayCacheImpl *pImpl;
USHORT nLockCount;
public:
SwLayoutCache() : pImpl( NULL ), nLockCount( 0 ) {}
~SwLayoutCache();
void Read( SvStream &rStream );
void Write( SvStream &rStream, const SwDoc& rDoc );
void ClearImpl();
sal_Bool IsLocked() const { return nLockCount > 0; }
USHORT& GetLockCount() { return nLockCount; }
SwLayCacheImpl *LockImpl()
{ if( nLockCount & 0x8000 ) return NULL;
if ( pImpl )
++nLockCount;
return pImpl; }
void UnlockImpl() { --nLockCount; }
#ifdef DBG_UTIL
sal_Bool CompareLayout( const SwDoc& rDoc ) const;
#endif
};
#endif
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