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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_LAYOUT_LAYHELP_HXX
#define INCLUDED_SW_SOURCE_CORE_LAYOUT_LAYHELP_HXX
#include <swrect.hxx>
#include <nodeoffset.hxx>
#include <tools/solar.h>
#include <memory>
#include <vector>
#include <deque>
class SwDoc;
class SwFrame;
class SwLayoutFrame;
class SwPageFrame;
class SwSectionFrame;
class SwSectionNode;
class SvStream;
/*
* Contains the page break information and the text frame positions
* of the document (after loading)
* and is used inside the constructor of the layout rootframe to
* insert content and text frames at the right pages.
* For every page of the main text (body content, no footnotes, text frames etc.)
* we have the nodeindex of the first content at the page,
* the type of content ( table or paragraph )
* and if it's not the first part of the table/paragraph,
* the row/character-offset inside the table/paragraph.
* The text frame positions are stored in the SwPageFlyCache array.
*/
class SwFlyCache;
typedef std::vector<SwFlyCache> SwPageFlyCache;
class SwLayCacheImpl
{
std::vector<SwNodeOffset> mIndices;
/// either a textframe character offset, or a row index inside a table
std::deque<sal_Int32> m_aOffset;
std::vector<sal_uInt16> m_aType;
SwPageFlyCache m_FlyCache;
bool m_bUseFlyCache;
void Insert( sal_uInt16 nType, SwNodeOffset nIndex, sal_Int32 nOffset );
public:
inline SwLayCacheImpl();
size_t size() const { return mIndices.size(); }
bool Read( SvStream& rStream );
SwNodeOffset GetBreakIndex( size_t nIdx ) const { return mIndices[ nIdx ]; }
sal_Int32 GetBreakOfst( size_t nIdx ) const { return m_aOffset[ nIdx ]; }
sal_uInt16 GetBreakType( size_t nIdx ) const { return m_aType[ nIdx ]; }
inline size_t GetFlyCount() const;
inline SwFlyCache& GetFlyCache( size_t nIdx );
bool IsUseFlyCache() const { return m_bUseFlyCache; }
};
// Helps to create the sectionframes during the InsertCnt_-function
// by controlling nested sections.
class SwActualSection
{
SwActualSection *m_pUpper;
SwSectionFrame *m_pSectFrame;
SwSectionNode *m_pSectNode;
public:
SwActualSection( SwActualSection *pUpper,
SwSectionFrame *pSect,
SwSectionNode *pNd );
SwSectionFrame *GetSectionFrame() { return m_pSectFrame; }
void SetSectionFrame( SwSectionFrame *p ) { m_pSectFrame = p; }
SwSectionNode *GetSectionNode() { return m_pSectNode;}
void SetUpper(SwActualSection *p) { m_pUpper = p; }
SwActualSection *GetUpper() { return m_pUpper; }
};
/// Helps during the InsertCnt_ function to create new pages.
/// If there's a layout cache available, this information is used.
class SwLayHelper
{
SwFrame* &mrpFrame;
SwFrame* &mrpPrv;
SwPageFrame* &mrpPage;
SwLayoutFrame* &mrpLay;
std::unique_ptr<SwActualSection> &mrpActualSection;
bool mbBreakAfter;
SwDoc* mpDoc;
SwLayCacheImpl* mpImpl;
sal_uLong mnMaxParaPerPage;
sal_uLong mnParagraphCnt;
SwNodeOffset mnStartOfContent;
size_t mnIndex; ///< the index in the page break array
size_t mnFlyIdx; ///< the index in the fly cache array
bool mbFirst : 1;
void CheckFlyCache_( SwPageFrame* pPage );
public:
SwLayHelper( SwDoc *pD, SwFrame* &rpF, SwFrame* &rpP, SwPageFrame* &rpPg,
SwLayoutFrame* &rpL, std::unique_ptr<SwActualSection> &rpA,
SwNodeOffset nNodeIndex, bool bCache );
~SwLayHelper();
sal_uLong CalcPageCount();
bool CheckInsert( SwNodeOffset nNodeIndex );
bool CheckInsertPage();
/// Look for fresh text frames at this (new) page and set them to the right
/// position, if they are in the fly cache.
void CheckFlyCache( SwPageFrame* pPage )
{ if( mpImpl && mnFlyIdx < mpImpl->GetFlyCount() ) CheckFlyCache_( pPage ); }
};
// Contains the data structures that are required to read and write a layout cache.
#define SW_LAYCACHE_IO_REC_PAGES 'p'
#define SW_LAYCACHE_IO_REC_PARA 'P'
#define SW_LAYCACHE_IO_REC_TABLE 'T'
#define SW_LAYCACHE_IO_REC_FLY 'F'
#define SW_LAYCACHE_IO_VERSION_MAJOR 1
#define SW_LAYCACHE_IO_VERSION_MINOR 1
class SwLayCacheIoImpl
{
private:
struct RecTypeSize {
sal_uInt8 type;
sal_uLong size;
RecTypeSize(sal_uInt8 typ, sal_uLong siz) : type(typ), size(siz) {}
};
std::vector<RecTypeSize> m_aRecords;
SvStream *m_pStream;
sal_uLong m_nFlagRecEnd;
sal_uInt16 m_nMajorVersion;
sal_uInt16 m_nMinorVersion;
bool m_bWriteMode : 1;
bool m_bError : 1;
public:
SwLayCacheIoImpl( SvStream& rStrm, bool bWrtMd );
/// Get input or output stream
SvStream& GetStream() const { return *m_pStream; }
/// Open a record of type "nType"
void OpenRec( sal_uInt8 nType );
/// Close a record. This skips any unread data that
/// remains in the record.
void CloseRec();
/// Return the number of bytes contained in the current record that
/// haven't been read by now.
sal_uInt32 BytesLeft();
/// Return the current record's type
sal_uInt8 Peek();
/// Skip the current record
void SkipRec();
/// Open a flag record for reading. The uppermost four bits are flags,
/// while the lowermost are the flag record's size. Flag records cannot
/// be nested.
sal_uInt8 OpenFlagRec();
/// Open flag record for writing;
void OpenFlagRec( sal_uInt8 nFlags, sal_uInt8 nLen );
/// Close a flag record. Any bytes left are skipped.
void CloseFlagRec();
bool HasError() const { return m_bError; }
sal_uInt16 GetMajorVersion() const { return m_nMajorVersion; }
sal_uInt16 GetMinorVersion() const { return m_nMinorVersion; }
};
// Stored information about text frames:
class SwFlyCache : public SwRect // position and size
{
public:
sal_uLong nOrdNum; ///< Id to recognize text frames
sal_uInt16 nPageNum; ///< page number
SwFlyCache( sal_uInt16 nP, sal_uLong nO, tools::Long nXL, tools::Long nYL, tools::Long nWL, tools::Long nHL ) :
SwRect( nXL, nYL, nWL, nHL ), nOrdNum( nO ), nPageNum( nP ){}
};
SwLayCacheImpl::SwLayCacheImpl() : m_bUseFlyCache(false) {}
size_t SwLayCacheImpl::GetFlyCount() const { return m_FlyCache.size(); }
SwFlyCache& SwLayCacheImpl::GetFlyCache( size_t nIdx ) { return m_FlyCache[ nIdx ]; }
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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