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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #ifndef INCLUDED_SW_SOURCE_CORE_LAYOUT_LAYHELP_HXX
21 : #define INCLUDED_SW_SOURCE_CORE_LAYOUT_LAYHELP_HXX
22 :
23 : #include <swrect.hxx>
24 : #include <vector>
25 : #include <deque>
26 :
27 : class SwDoc;
28 : class SwFrm;
29 : class SwLayoutFrm;
30 : class SwPageFrm;
31 : class SwFlyFrm;
32 : class SwSectionFrm;
33 : class SwSectionNode;
34 : class SvStream;
35 :
36 : /*
37 : * Contains the page break information and the text frame positions
38 : * of the document (after loading)
39 : * and is used inside the constructor of the layout rootframe to
40 : * insert content and text frames at the right pages.
41 : * For every page of the main text (body content, no footnotes, text frames etc.)
42 : * we have the nodeindex of the first content at the page,
43 : * the type of content ( table or paragraph )
44 : * and if it's not the first part of the table/paragraph,
45 : * the row/character-offset inside the table/paragraph.
46 : * The text frame positions are stored in the SwPageFlyCache array.
47 : */
48 :
49 : class SwFlyCache;
50 : typedef boost::ptr_vector<SwFlyCache> SwPageFlyCache;
51 :
52 41 : class SwLayCacheImpl
53 : {
54 : std::vector<sal_uLong> mIndices;
55 : std::deque<sal_Int32> aOffset;
56 : std::vector<sal_uInt16> aType;
57 : SwPageFlyCache aFlyCache;
58 : bool bUseFlyCache;
59 : void Insert( sal_uInt16 nType, sal_uLong nIndex, sal_Int32 nOffset );
60 :
61 : public:
62 41 : SwLayCacheImpl() : mIndices(), aOffset(), aType(), aFlyCache(), bUseFlyCache(false) {}
63 :
64 1482 : size_t size() const { return mIndices.size(); }
65 :
66 : bool Read( SvStream& rStream );
67 :
68 1231 : sal_uLong GetBreakIndex( sal_uInt16 nIdx ) const { return mIndices[ nIdx ]; }
69 67 : sal_Int32 GetBreakOfst( size_t nIdx ) const { return aOffset[ nIdx ]; }
70 65 : sal_uInt16 GetBreakType( sal_uInt16 nIdx ) const { return aType[ nIdx ]; }
71 :
72 109 : size_t GetFlyCount() const { return aFlyCache.size(); }
73 12 : SwFlyCache& GetFlyCache( size_t nIdx ) { return aFlyCache[ nIdx ]; }
74 :
75 2 : bool IsUseFlyCache() const { return bUseFlyCache; }
76 : };
77 :
78 : // Helps to create the sectionframes during the _InsertCnt-function
79 : // by controlling nested sections.
80 : class SwActualSection
81 : {
82 : SwActualSection *pUpper;
83 : SwSectionFrm *pSectFrm;
84 : SwSectionNode *pSectNode;
85 : public:
86 : SwActualSection( SwActualSection *pUpper,
87 : SwSectionFrm *pSect,
88 : SwSectionNode *pNd );
89 :
90 295 : SwSectionFrm *GetSectionFrm() { return pSectFrm; }
91 117 : void SetSectionFrm( SwSectionFrm *p ) { pSectFrm = p; }
92 42 : SwSectionNode *GetSectionNode() { return pSectNode;}
93 674 : SwActualSection *GetUpper() { return pUpper; }
94 : };
95 :
96 : // Helps during the _InsertCnt-function to create new pages.
97 : // If there's a layoutcache available, this information is used.
98 : class SwLayHelper
99 : {
100 : SwFrm* &rpFrm;
101 : SwFrm* &rpPrv;
102 : SwPageFrm* &rpPage;
103 : SwLayoutFrm* &rpLay;
104 : SwActualSection* &rpActualSection;
105 : bool &rbBreakAfter;
106 : SwDoc* pDoc;
107 : SwLayCacheImpl* pImpl;
108 : sal_uLong nMaxParaPerPage;
109 : sal_uLong nParagraphCnt;
110 : sal_uLong nStartOfContent;
111 : sal_uInt16 nIndex; // the index in the page break array
112 : size_t nFlyIdx; // the index in the fly cache array
113 : bool bFirst : 1;
114 : void _CheckFlyCache( SwPageFrm* pPage );
115 : public:
116 : SwLayHelper( SwDoc *pD, SwFrm* &rpF, SwFrm* &rpP, SwPageFrm* &rpPg,
117 : SwLayoutFrm* &rpL, SwActualSection* &rpA, bool &rBrk,
118 : sal_uLong nNodeIndex, bool bCache );
119 : ~SwLayHelper();
120 : sal_uLong CalcPageCount();
121 : bool CheckInsert( sal_uLong nNodeIndex );
122 :
123 : bool CheckInsertPage();
124 :
125 : /// Look for fresh text frames at this (new) page and set them to the right
126 : /// position, if they are in the fly cache.
127 3042 : void CheckFlyCache( SwPageFrm* pPage )
128 3042 : { if( pImpl && nFlyIdx < pImpl->GetFlyCount() ) _CheckFlyCache( pPage ); }
129 : };
130 :
131 : // Contains the data structures that are required to read and write a layout cache.
132 : #define SW_LAYCACHE_IO_REC_PAGES 'p'
133 : #define SW_LAYCACHE_IO_REC_PARA 'P'
134 : #define SW_LAYCACHE_IO_REC_TABLE 'T'
135 : #define SW_LAYCACHE_IO_REC_FLY 'F'
136 :
137 : #define SW_LAYCACHE_IO_VERSION_MAJOR 1
138 : #define SW_LAYCACHE_IO_VERSION_MINOR 1
139 :
140 56 : class SwLayCacheIoImpl
141 : {
142 : private:
143 : struct RecTypeSize {
144 : sal_uInt8 type;
145 : sal_uLong size;
146 903 : RecTypeSize(sal_uInt8 typ, sal_uLong siz) : type(typ), size(siz) {}
147 : };
148 : std::vector<RecTypeSize> aRecords;
149 :
150 : SvStream *pStream;
151 :
152 : sal_uLong nFlagRecEnd;
153 :
154 : sal_uInt16 nMajorVersion;
155 : sal_uInt16 nMinorVersion;
156 :
157 : bool bWriteMode : 1;
158 : bool bError : 1;
159 :
160 : public:
161 : SwLayCacheIoImpl( SvStream& rStrm, bool bWrtMd );
162 :
163 : /// Get input or output stream
164 875 : SvStream& GetStream() const { return *pStream; }
165 :
166 : /// Open a record of type "nType"
167 : bool OpenRec( sal_uInt8 nType );
168 :
169 : /// Close a record of type "nType". This skips any unread data that
170 : /// remains in the record.
171 : bool CloseRec( sal_uInt8 nType );
172 :
173 : /// Return the number of bytes contained in the current record that
174 : /// haven't been read by now.
175 : sal_uInt32 BytesLeft();
176 :
177 : /// Return the current record's type
178 : sal_uInt8 Peek();
179 :
180 : /// Skip the current record
181 : void SkipRec();
182 :
183 : /// Open a flag record for reading. The uppermost four bits are flags,
184 : /// while the lowermost are the flag record's size. Flag records cannot
185 : /// be nested.
186 : sal_uInt8 OpenFlagRec();
187 :
188 : /// Open flag record for writing;
189 : void OpenFlagRec( sal_uInt8 nFlags, sal_uInt8 nLen );
190 :
191 : /// Close a flag record. Any bytes left are skipped.
192 : void CloseFlagRec();
193 :
194 865 : bool HasError() const { return bError; }
195 :
196 41 : sal_uInt16 GetMajorVersion() const { return nMajorVersion; }
197 41 : sal_uInt16 GetMinorVersion() const { return nMinorVersion; }
198 : };
199 :
200 : // Stored information about text frames:
201 : class SwFlyCache : public SwRect // position and size
202 : {
203 : public:
204 : sal_uLong nOrdNum; ///< Id to recognize text frames
205 : sal_uInt16 nPageNum; ///< page number
206 33 : SwFlyCache( sal_uInt16 nP, sal_uLong nO, long nXL, long nYL, long nWL, long nHL ) :
207 33 : SwRect( nXL, nYL, nWL, nHL ), nOrdNum( nO ), nPageNum( nP ){}
208 : };
209 :
210 : #endif
211 :
212 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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