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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_SW_SOURCE_CORE_INC_LAYCACHE_HXX
#define INCLUDED_SW_SOURCE_CORE_INC_LAYCACHE_HXX
#include <sal/types.h>
#include <memory>
class SwDoc;
class SwLayCacheImpl;
class SvStream;
/*
* 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 structure.
* 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
{
std::unique_ptr<SwLayCacheImpl> pImpl;
sal_uInt16 nLockCount;
public:
SwLayoutCache();
~SwLayoutCache();
void Read( SvStream &rStream );
static void Write( SvStream &rStream, const SwDoc& rDoc );
void ClearImpl();
bool IsLocked() const { return nLockCount > 0; }
sal_uInt16& GetLockCount() { return nLockCount; }
SwLayCacheImpl *LockImpl()
{ if( nLockCount & 0x8000 ) return nullptr;
if ( pImpl )
++nLockCount;
return pImpl.get(); }
void UnlockImpl() { --nLockCount; }
#ifdef DBG_UTIL
bool CompareLayout( const SwDoc& rDoc ) const;
#endif
};
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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