69 lines
2.4 KiB
C++
69 lines
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_SW_SOURCE_CORE_INC_LAYCACHE_HXX
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#define INCLUDED_SW_SOURCE_CORE_INC_LAYCACHE_HXX
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#include <sal/types.h>
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#include <memory>
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class SwDoc;
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class SwLayCacheImpl;
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class SvStream;
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/*
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* This class allows to save layout information in the file and it contains
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* this information after loading of a file.
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* Call Write(..) with a stream and the document to save and the page break
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* information of the document will be written.
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* Call Read(..) with a stream and the member pLayCacheImpl will
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* read the information from the stream and store it in an internal structure.
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* There's a simple locking mechanism at these classes,
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* if somebody reads the information, he increments the lock count by 1,
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* during the Read(..) function the lock count will set to $8000.
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*/
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class SwLayoutCache
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{
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std::unique_ptr<SwLayCacheImpl> m_pImpl;
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sal_uInt16 m_nLockCount;
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public:
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SwLayoutCache();
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~SwLayoutCache();
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void Read( SvStream &rStream );
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static void Write( SvStream &rStream, const SwDoc& rDoc );
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void ClearImpl();
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bool IsLocked() const { return m_nLockCount > 0; }
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sal_uInt16& GetLockCount() { return m_nLockCount; }
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SwLayCacheImpl *LockImpl()
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{ if( m_nLockCount & 0x8000 ) return nullptr;
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if ( m_pImpl )
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++m_nLockCount;
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return m_pImpl.get(); }
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void UnlockImpl() { --m_nLockCount; }
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#ifdef DBG_UTIL
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bool CompareLayout( const SwDoc& rDoc ) const;
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#endif
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};
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#endif
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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