LibreOffice Module sw (master)  1
softpagebreak.cxx
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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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9  * This file incorporates work covered by the following license notice:
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11  * Licensed to the Apache Software Foundation (ASF) under one or more
12  * contributor license agreements. See the NOTICE file distributed
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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 #include <txtfrm.hxx>
21 #include <pagefrm.hxx>
22 #include <swtable.hxx>
23 #include <frmfmt.hxx>
24 #include <rowfrm.hxx>
25 #include <tabfrm.hxx>
26 #include <calbck.hxx>
27 #include <ndtxt.hxx>
28 
30 {
32  for( const SwTextFrame *pFrame = aIter.First(); pFrame; pFrame = aIter.Next() )
33  {
34  // No soft page break in header or footer
35  if( pFrame->FindFooterOrHeader() || pFrame->IsInFly() )
36  return;
37  // No soft page break if I'm not the first frame in my layout frame
38  if( pFrame->GetIndPrev() )
39  continue;
40  const SwPageFrame* pPage = pFrame->FindPageFrame();
41  // No soft page break at the first page
42  if( pPage && pPage->GetPrev() )
43  {
44  const SwContentFrame* pFirst2 = pPage->FindFirstBodyContent();
45  // Special handling for content frame in table frames
46  if( pFrame->IsInTab() )
47  {
48  // No soft page break if I'm in a table but the first content frame
49  // at my page is not in a table
50  if( !pFirst2 || !pFirst2->IsInTab() )
51  continue;
52  const SwLayoutFrame *pRow = pFrame->GetUpper();
53  // Looking for the "most upper" row frame,
54  // skipping sub tables and/or table in table
55  while( !pRow->IsRowFrame() || !pRow->GetUpper()->IsTabFrame() ||
56  pRow->GetUpper()->GetUpper()->IsInTab() )
57  pRow = pRow->GetUpper();
58  const SwTabFrame *pTab = pRow->FindTabFrame();
59  // For master tables the soft page break will exported at the table row,
60  // not at the content frame.
61  // If the first content is outside my table frame, no soft page break.
62  if( !pTab->IsFollow() || !pTab->IsAnLower( pFirst2 ) )
63  continue;
64  // Only content of non-heading-rows can get a soft page break
65  const SwFrame* pFirstRow = pTab->GetFirstNonHeadlineRow();
66  // If there's no follow flow line, the soft page break will be
67  // exported at the row, not at the content.
68  if( pRow == pFirstRow &&
69  pTab->FindMaster()->HasFollowFlowLine() )
70  {
71  // Now we have the row which causes a new page,
72  // this row is a follow flow line and therefore cannot get
73  // the soft page break itself.
74  // Every first content frame of every cell frame in this row
75  // will get the soft page break
76  const SwFrame* pCell = pRow->Lower();
77  while( pCell )
78  {
79  pFirst2 = static_cast<const SwLayoutFrame*>(pCell)->ContainsContent();
80  if( pFirst2 == pFrame )
81  { // Here we are: a first content inside a cell
82  // inside the splitted row => soft page break
83  auto const pos(pFrame->MapViewToModel(pFrame->GetOfst()));
84  if (pos.first == this)
85  {
86  rBreak.insert(pos.second);
87  }
88  break;
89  }
90  pCell = pCell->GetNext();
91  }
92  }
93  }
94  else // No soft page break if there's a "hard" page break attribute
95  if( pFirst2 == pFrame && !pFrame->IsPageBreak( true ) )
96  {
97  auto const pos(pFrame->MapViewToModel(pFrame->GetOfst()));
98  if (pos.first == this)
99  { // in the !Show case, we have to iterate over the merged
100  // SwTextFrame for every node
101  rBreak.insert(pos.second);
102  }
103  }
104  }
105  }
106 }
107 
109 {
110  // No soft page break for sub tables
111  if( GetUpper() || !GetFrameFormat() )
112  return false;
114  for( SwRowFrame* pLast = aIter.First(); pLast; pLast = aIter.Next() )
115  {
116  if( pLast->GetTabLine() == this )
117  {
118  const SwTabFrame* pTab = pLast->FindTabFrame();
119  // No soft page break for
120  // tables with prevs, i.e. if the frame is not the first in its layout frame
121  // tables in footer or header
122  // tables in flies
123  // inner tables of nested tables
124  // master table frames with "hard" page break attribute
125  if( pTab->GetIndPrev() || pTab->FindFooterOrHeader()
126  || pTab->IsInFly() || pTab->GetUpper()->IsInTab() ||
127  ( !pTab->IsFollow() && pTab->IsPageBreak( true ) ) )
128  return false;
129  const SwPageFrame* pPage = pTab->FindPageFrame();
130  // No soft page break at the first page of the document
131  if( pPage && !pPage->GetPrev() )
132  return false;
133  const SwContentFrame* pFirst = pPage ? pPage->FindFirstBodyContent() : nullptr;
134  // No soft page break for
135  // tables which does not contain the first body content of the page
136  if( !pFirst || !pTab->IsAnLower( pFirst->FindTabFrame() ) )
137  return false;
138  // The row which could get a soft page break must be either the first
139  // row of a master table frame or the first "non-headline-row" of a
140  // follow table frame...
141  const SwFrame* pRow = pTab->IsFollow() ?
142  pTab->GetFirstNonHeadlineRow() : pTab->Lower();
143  if( pRow == pLast )
144  {
145  // The last check: no soft page break for "follow" table lines
146  return !pTab->IsFollow() || !pTab->FindMaster()->HasFollowFlowLine();
147  }
148  return false;
149  }
150  }
151  return false;
152 }
153 
154 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
bool IsAnLower(const SwFrame *) const
Definition: findfrm.cxx:206
SwFrame * FindFooterOrHeader()
Definition: findfrm.cxx:547
Base class of the Writer layout elements.
Definition: frame.hxx:295
Represents the visualization of a paragraph.
Definition: txtfrm.hxx:149
bool IsFollow() const
Definition: flowfrm.hxx:166
bool IsInFly() const
Definition: frame.hxx:937
SwTabFrame is one table in the document layout, containing rows (which contain cells).
Definition: tabfrm.hxx:30
TElementType * Next()
Definition: calbck.hxx:376
SwContentFrame * FindFirstBodyContent()
Definition: pagefrm.hxx:333
bool IsInTab() const
Definition: frame.hxx:931
bool IsPageBreak(bool bAct) const
|* If there's a hard page break before the Frame AND there's a |* predecessor on the same page...
Definition: flowfrm.cxx:1136
SwTabFrame * FindMaster(bool bFirstMaster=false) const
Definition: flowfrm.cxx:714
SwFrame * GetIndPrev() const
Definition: frame.hxx:702
SwPageFrame * FindPageFrame()
Definition: frame.hxx:658
const SwFrame * Lower() const
Definition: layfrm.hxx:100
TElementType * First()
Definition: calbck.hxx:345
SwLayoutFrame * GetUpper()
Definition: frame.hxx:656
bool hasSoftPageBreak() const
bool IsRowFrame() const
Definition: frame.hxx:1198
SwFrameFormat * GetFrameFormat()
Definition: swtable.hxx:366
SwFrame * GetPrev()
Definition: frame.hxx:655
A page of the document layout.
Definition: pagefrm.hxx:40
void fillSoftPageBreakList(SwSoftPageBreakList &rBreak) const
SwRowFrame * GetFirstNonHeadlineRow() const
Definition: tabfrm.cxx:5338
bool IsTabFrame() const
Definition: frame.hxx:1194
std::set< sal_Int32 > SwSoftPageBreakList
Definition: wrtww8.hxx:137
SwTableBox * GetUpper()
Definition: swtable.hxx:362
bool HasFollowFlowLine() const
Definition: tabfrm.hxx:158
SwRowFrame is one table row in the document layout.
Definition: rowfrm.hxx:28
SwTabFrame * FindTabFrame()
Definition: frame.hxx:1075
SwFrame * GetNext()
Definition: frame.hxx:654