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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 : #include <editeng/ulspitem.hxx>
21 : #include <fmtclds.hxx>
22 : #include <fmtfordr.hxx>
23 : #include <frmfmt.hxx>
24 : #include "frmtool.hxx"
25 : #include "colfrm.hxx"
26 : #include "pagefrm.hxx"
27 : #include "bodyfrm.hxx"
28 : #include "rootfrm.hxx"
29 : #include "sectfrm.hxx"
30 : #include <calbck.hxx>
31 : #include "ftnfrm.hxx"
32 : #include <IDocumentState.hxx>
33 : #include <IDocumentLayoutAccess.hxx>
34 :
35 754 : SwColumnFrm::SwColumnFrm( SwFrameFormat *pFormat, SwFrm* pSib ):
36 754 : SwFootnoteBossFrm( pFormat, pSib )
37 : {
38 754 : mnFrmType = FRM_COLUMN;
39 754 : SwBodyFrm* pColBody = new SwBodyFrm( pFormat->GetDoc()->GetDfltFrameFormat(), pSib );
40 754 : pColBody->InsertBehind( this, 0 ); // ColumnFrms now with BodyFrm
41 754 : SetMaxFootnoteHeight( LONG_MAX );
42 754 : }
43 :
44 754 : void SwColumnFrm::DestroyImpl()
45 : {
46 754 : SwFrameFormat *pFormat = GetFormat();
47 : SwDoc *pDoc;
48 754 : if ( !(pDoc = pFormat->GetDoc())->IsInDtor() && pFormat->HasOnlyOneListener() )
49 : {
50 : //I'm the only one, delete the format.
51 : //Get default format before, so the base class can cope with it.
52 190 : pDoc->GetDfltFrameFormat()->Add( this );
53 190 : pDoc->DelFrameFormat( pFormat );
54 : }
55 :
56 754 : SwFootnoteBossFrm::DestroyImpl();
57 754 : }
58 :
59 1508 : SwColumnFrm::~SwColumnFrm()
60 : {
61 1508 : }
62 :
63 0 : static void lcl_RemoveColumns( SwLayoutFrm *pCont, sal_uInt16 nCnt )
64 : {
65 : OSL_ENSURE( pCont && pCont->Lower() && pCont->Lower()->IsColumnFrm(),
66 : "no columns to remove." );
67 :
68 0 : SwColumnFrm *pColumn = static_cast<SwColumnFrm*>(pCont->Lower());
69 0 : sw_RemoveFootnotes( pColumn, true, true );
70 0 : while ( pColumn->GetNext() )
71 : {
72 : OSL_ENSURE( pColumn->GetNext()->IsColumnFrm(),
73 : "neighbor of ColumnFrame is no ColumnFrame." );
74 0 : pColumn = static_cast<SwColumnFrm*>(pColumn->GetNext());
75 : }
76 0 : for ( sal_uInt16 i = 0; i < nCnt; ++i )
77 : {
78 0 : SwColumnFrm *pTmp = static_cast<SwColumnFrm*>(pColumn->GetPrev());
79 0 : pColumn->Cut();
80 0 : SwFrm::DestroyFrm(pColumn); //format is going to be destroyed in the DTor if needed.
81 0 : pColumn = pTmp;
82 : }
83 0 : }
84 :
85 451 : static SwLayoutFrm * lcl_FindColumns( SwLayoutFrm *pLay, sal_uInt16 nCount )
86 : {
87 451 : SwFrm *pCol = pLay->Lower();
88 451 : if ( pLay->IsPageFrm() )
89 14 : pCol = static_cast<SwPageFrm*>(pLay)->FindBodyCont()->Lower();
90 :
91 451 : if ( pCol && pCol->IsColumnFrm() )
92 : {
93 185 : SwFrm *pTmp = pCol;
94 : sal_uInt16 i;
95 185 : for ( i = 0; pTmp; pTmp = pTmp->GetNext(), ++i )
96 : /* do nothing */;
97 185 : return i == nCount ? static_cast<SwLayoutFrm*>(pCol) : 0;
98 : }
99 266 : return 0;
100 : }
101 :
102 266 : static bool lcl_AddColumns( SwLayoutFrm *pCont, sal_uInt16 nCount )
103 : {
104 266 : SwDoc *pDoc = pCont->GetFormat()->GetDoc();
105 266 : const bool bMod = pDoc->getIDocumentState().IsModified();
106 :
107 : //Formats should be shared whenever possible. If a neighbour already has
108 : //the same column settings we can add them to the same format.
109 : //The neighbour can be searched using the format, however the owner of the
110 : //attribute depends on the frame type.
111 266 : SwLayoutFrm *pAttrOwner = pCont;
112 266 : if ( pCont->IsBodyFrm() )
113 14 : pAttrOwner = pCont->FindPageFrm();
114 266 : SwLayoutFrm *pNeighbourCol = 0;
115 266 : SwIterator<SwLayoutFrm,SwFormat> aIter( *pAttrOwner->GetFormat() );
116 266 : SwLayoutFrm *pNeighbour = aIter.First();
117 :
118 266 : sal_uInt16 nAdd = 0;
119 266 : SwFrm *pCol = pCont->Lower();
120 266 : if ( pCol && pCol->IsColumnFrm() )
121 0 : for ( nAdd = 1; pCol; pCol = pCol->GetNext(), ++nAdd )
122 : /* do nothing */;
123 798 : while ( pNeighbour )
124 : {
125 451 : if ( 0 != (pNeighbourCol = lcl_FindColumns( pNeighbour, nCount+nAdd )) &&
126 : pNeighbourCol != pCont )
127 185 : break;
128 266 : pNeighbourCol = 0;
129 266 : pNeighbour = aIter.Next();
130 : }
131 :
132 : bool bRet;
133 266 : SwTwips nMax = pCont->IsPageBodyFrm() ?
134 266 : pCont->FindPageFrm()->GetMaxFootnoteHeight() : LONG_MAX;
135 266 : if ( pNeighbourCol )
136 : {
137 185 : bRet = false;
138 185 : SwFrm *pTmp = pCont->Lower();
139 370 : while ( pTmp )
140 : {
141 0 : pTmp = pTmp->GetNext();
142 0 : pNeighbourCol = static_cast<SwLayoutFrm*>(pNeighbourCol->GetNext());
143 : }
144 749 : for ( sal_uInt16 i = 0; i < nCount; ++i )
145 : {
146 564 : SwColumnFrm *pTmpCol = new SwColumnFrm( pNeighbourCol->GetFormat(), pCont );
147 564 : pTmpCol->SetMaxFootnoteHeight( nMax );
148 564 : pTmpCol->InsertBefore( pCont, NULL );
149 564 : pNeighbourCol = static_cast<SwLayoutFrm*>(pNeighbourCol->GetNext());
150 : }
151 : }
152 : else
153 : {
154 81 : bRet = true;
155 271 : for ( sal_uInt16 i = 0; i < nCount; ++i )
156 : {
157 190 : SwFrameFormat *pFormat = pDoc->MakeFrameFormat( aEmptyOUStr, pDoc->GetDfltFrameFormat());
158 190 : SwColumnFrm *pTmp = new SwColumnFrm( pFormat, pCont );
159 190 : pTmp->SetMaxFootnoteHeight( nMax );
160 190 : pTmp->Paste( pCont );
161 : }
162 : }
163 :
164 266 : if ( !bMod )
165 163 : pDoc->getIDocumentState().ResetModified();
166 266 : return bRet;
167 : }
168 :
169 : /** add or remove columns from a layoutframe.
170 : *
171 : * Normally, a layoutframe with a column attribute of 1 or 0 columns contains
172 : * no columnframe. However, a sectionframe with "footnotes at the end" needs
173 : * a columnframe.
174 : *
175 : * @param rOld
176 : * @param rNew
177 : * @param bChgFootnote if true, the columnframe will be inserted or removed, if necessary.
178 : */
179 272 : void SwLayoutFrm::ChgColumns( const SwFormatCol &rOld, const SwFormatCol &rNew,
180 : const bool bChgFootnote )
181 : {
182 272 : if ( rOld.GetNumCols() <= 1 && rNew.GetNumCols() <= 1 && !bChgFootnote )
183 6 : return;
184 : // #i97379#
185 : // If current lower is a no text frame, then columns are not allowed
186 266 : if ( Lower() && Lower()->IsNoTextFrm() &&
187 0 : rNew.GetNumCols() > 1 )
188 : {
189 0 : return;
190 : }
191 :
192 266 : sal_uInt16 nNewNum, nOldNum = 1;
193 266 : if( Lower() && Lower()->IsColumnFrm() )
194 : {
195 0 : SwFrm* pCol = Lower();
196 0 : while( 0 != (pCol=pCol->GetNext()) )
197 0 : ++nOldNum;
198 : }
199 266 : nNewNum = rNew.GetNumCols();
200 266 : if( !nNewNum )
201 0 : ++nNewNum;
202 : bool bAtEnd;
203 266 : if( IsSctFrm() )
204 252 : bAtEnd = static_cast<SwSectionFrm*>(this)->IsAnyNoteAtEnd();
205 : else
206 14 : bAtEnd = false;
207 :
208 : //Setting the column width is only needed for new formats.
209 266 : bool bAdjustAttributes = nOldNum != rOld.GetNumCols();
210 :
211 : //The content is saved and restored if the column count is different.
212 266 : SwFrm *pSave = 0;
213 266 : if( nOldNum != nNewNum || bChgFootnote )
214 : {
215 266 : SwDoc *pDoc = GetFormat()->GetDoc();
216 : OSL_ENSURE( pDoc, "FrameFormat doesn't return a document." );
217 : // SaveContent would also suck up the content of the footnote container
218 : // and store it within the normal text flow.
219 266 : if( IsPageBodyFrm() )
220 14 : pDoc->getIDocumentLayoutAccess().GetCurrentLayout()->RemoveFootnotes( static_cast<SwPageFrm*>(GetUpper()), true, false );
221 266 : pSave = ::SaveContent( this );
222 :
223 : //If columns exist, they get deleted if a column count of 0 or 1 is requested.
224 266 : if ( nNewNum == 1 && !bAtEnd )
225 : {
226 0 : ::lcl_RemoveColumns( this, nOldNum );
227 0 : if ( IsBodyFrm() )
228 0 : SetFrameFormat( pDoc->GetDfltFrameFormat() );
229 : else
230 0 : GetFormat()->SetFormatAttr( SwFormatFillOrder() );
231 0 : if ( pSave )
232 0 : ::RestoreContent( pSave, this, 0, true );
233 0 : return;
234 : }
235 266 : if ( nOldNum == 1 )
236 : {
237 266 : if ( IsBodyFrm() )
238 14 : SetFrameFormat( pDoc->GetColumnContFormat() );
239 : else
240 252 : GetFormat()->SetFormatAttr( SwFormatFillOrder( ATT_LEFT_TO_RIGHT ) );
241 266 : if( !Lower() || !Lower()->IsColumnFrm() )
242 266 : --nOldNum;
243 : }
244 266 : if ( nOldNum > nNewNum )
245 : {
246 0 : ::lcl_RemoveColumns( this, nOldNum - nNewNum );
247 0 : bAdjustAttributes = true;
248 : }
249 266 : else if( nOldNum < nNewNum )
250 : {
251 266 : sal_uInt16 nAdd = nNewNum - nOldNum;
252 266 : bAdjustAttributes = lcl_AddColumns( this, nAdd );
253 : }
254 : }
255 :
256 266 : if ( !bAdjustAttributes )
257 : {
258 555 : if ( rOld.GetLineWidth() != rNew.GetLineWidth() ||
259 354 : rOld.GetWishWidth() != rNew.GetWishWidth() ||
260 169 : rOld.IsOrtho() != rNew.IsOrtho() )
261 73 : bAdjustAttributes = true;
262 : else
263 : {
264 112 : const size_t nCount = std::min( rNew.GetColumns().size(), rOld.GetColumns().size() );
265 112 : for ( size_t i = 0; i < nCount; ++i )
266 0 : if ( !(rOld.GetColumns()[i] == rNew.GetColumns()[i]) )
267 : {
268 0 : bAdjustAttributes = true;
269 0 : break;
270 : }
271 : }
272 : }
273 :
274 : //The columns can now be easily adjusted.
275 266 : AdjustColumns( &rNew, bAdjustAttributes );
276 :
277 : //Don't restore the content before. An earlier restore would trigger useless
278 : //actions during setup.
279 266 : if ( pSave )
280 : {
281 : OSL_ENSURE( Lower() && Lower()->IsLayoutFrm() &&
282 : static_cast<SwLayoutFrm*>(Lower())->Lower() &&
283 : static_cast<SwLayoutFrm*>(Lower())->Lower()->IsLayoutFrm(),
284 : "no column body." ); // ColumnFrms contain BodyFrms
285 0 : ::RestoreContent( pSave, static_cast<SwLayoutFrm*>(static_cast<SwLayoutFrm*>(Lower())->Lower()), 0, true );
286 : }
287 : }
288 :
289 1036 : void SwLayoutFrm::AdjustColumns( const SwFormatCol *pAttr, bool bAdjustAttributes )
290 : {
291 1036 : if( !Lower()->GetNext() )
292 : {
293 0 : Lower()->ChgSize( Prt().SSize() );
294 79 : return;
295 : }
296 :
297 1036 : const bool bVert = IsVertical();
298 :
299 1036 : SwRectFn fnRect = bVert ? ( IsVertLR() ? fnRectVertL2R : fnRectVert ) : fnRectHori;
300 :
301 : //If we have a pointer or we have to configure an attribute, we set the
302 : //column widths in any case. Otherwise we check if a configuration is needed.
303 1036 : if ( !pAttr )
304 : {
305 90 : pAttr = &GetFormat()->GetCol();
306 90 : if ( !bAdjustAttributes )
307 : {
308 90 : long nAvail = (Prt().*fnRect->fnGetWidth)();
309 305 : for ( SwLayoutFrm *pCol = static_cast<SwLayoutFrm*>(Lower());
310 : pCol;
311 215 : pCol = static_cast<SwLayoutFrm*>(pCol->GetNext()) )
312 215 : nAvail -= (pCol->Frm().*fnRect->fnGetWidth)();
313 90 : if ( !nAvail )
314 79 : return;
315 : }
316 : }
317 :
318 : //The columns can now be easily adjusted.
319 : //The widths get counted so we can give the reminder to the last one.
320 957 : SwTwips nAvail = (Prt().*fnRect->fnGetWidth)();
321 957 : const bool bLine = pAttr->GetLineAdj() != COLADJ_NONE;
322 957 : const sal_uInt16 nMin = bLine ? sal_uInt16( 20 + ( pAttr->GetLineWidth() / 2) ) : 0;
323 :
324 957 : const bool bR2L = IsRightToLeft();
325 957 : SwFrm *pCol = bR2L ? GetLastLower() : Lower();
326 :
327 : // #i27399#
328 : // bOrtho means we have to adjust the column frames manually. Otherwise
329 : // we may use the values returned by CalcColWidth:
330 957 : const bool bOrtho = pAttr->IsOrtho() && pAttr->GetNumCols() > 0;
331 957 : long nGutter = 0;
332 :
333 3793 : for ( sal_uInt16 i = 0; i < pAttr->GetNumCols() && pCol; ++i ) //i118878, value returned by GetNumCols() can't be trusted
334 : {
335 2836 : if( !bOrtho )
336 : {
337 1074 : const SwTwips nWidth = i == (pAttr->GetNumCols() - 1) ?
338 : nAvail :
339 1074 : pAttr->CalcColWidth( i, sal_uInt16( (Prt().*fnRect->fnGetWidth)() ) );
340 :
341 : const Size aColSz = bVert ?
342 0 : Size( Prt().Width(), nWidth ) :
343 1074 : Size( nWidth, Prt().Height() );
344 :
345 1074 : pCol->ChgSize( aColSz );
346 :
347 : // With this, the ColumnBodyFrms from page columns gets adjusted and
348 : // their bFixHeight flag is set so they won't shrink/grow.
349 : // Don't use the flag with frame columns because BodyFrms in frame
350 : // columns can grow/shrink.
351 1074 : if( IsBodyFrm() )
352 14 : static_cast<SwLayoutFrm*>(pCol)->Lower()->ChgSize( aColSz );
353 :
354 1074 : nAvail -= nWidth;
355 : }
356 :
357 2836 : if ( bOrtho || bAdjustAttributes )
358 : {
359 2055 : const SwColumn *pC = &pAttr->GetColumns()[i];
360 2055 : const SwAttrSet* pSet = pCol->GetAttrSet();
361 2055 : SvxLRSpaceItem aLR( pSet->GetLRSpace() );
362 :
363 : //In order to have enough space for the separation lines, we have to
364 : //take them into account here. Every time two columns meet we
365 : //calculate a clearance of 20 + half the pen width on the left or
366 : //right side, respectively.
367 2055 : const sal_uInt16 nLeft = pC->GetLeft();
368 2055 : const sal_uInt16 nRight = pC->GetRight();
369 :
370 2055 : aLR.SetLeft ( nLeft );
371 2055 : aLR.SetRight( nRight );
372 :
373 2055 : if ( bLine )
374 : {
375 38 : if ( i == 0 )
376 : {
377 19 : aLR.SetRight( std::max( nRight, nMin ) );
378 : }
379 19 : else if ( i == pAttr->GetNumCols() - 1 )
380 : {
381 19 : aLR.SetLeft ( std::max( nLeft, nMin ) );
382 : }
383 : else
384 : {
385 0 : aLR.SetLeft ( std::max( nLeft, nMin ) );
386 0 : aLR.SetRight( std::max( nRight, nMin ) );
387 : }
388 : }
389 :
390 2055 : if ( bAdjustAttributes )
391 : {
392 409 : SvxULSpaceItem aUL( pSet->GetULSpace() );
393 409 : aUL.SetUpper( pC->GetUpper());
394 409 : aUL.SetLower( pC->GetLower());
395 :
396 409 : static_cast<SwLayoutFrm*>(pCol)->GetFormat()->SetFormatAttr( aLR );
397 409 : static_cast<SwLayoutFrm*>(pCol)->GetFormat()->SetFormatAttr( aUL );
398 : }
399 :
400 2055 : nGutter += aLR.GetLeft() + aLR.GetRight();
401 : }
402 :
403 2836 : pCol = bR2L ? pCol->GetPrev() : pCol->GetNext();
404 : }
405 :
406 957 : if( bOrtho )
407 : {
408 588 : long nInnerWidth = ( nAvail - nGutter ) / pAttr->GetNumCols();
409 588 : pCol = Lower();
410 2350 : for( sal_uInt16 i = 0; i < pAttr->GetNumCols() && pCol; pCol = pCol->GetNext(), ++i ) //i118878, value returned by GetNumCols() can't be trusted
411 : {
412 : SwTwips nWidth;
413 1762 : if ( i == pAttr->GetNumCols() - 1 )
414 588 : nWidth = nAvail;
415 : else
416 : {
417 1174 : SvxLRSpaceItem aLR( pCol->GetAttrSet()->GetLRSpace() );
418 1174 : nWidth = nInnerWidth + aLR.GetLeft() + aLR.GetRight();
419 : }
420 1762 : if( nWidth < 0 )
421 0 : nWidth = 0;
422 :
423 : const Size aColSz = bVert ?
424 0 : Size( Prt().Width(), nWidth ) :
425 1762 : Size( nWidth, Prt().Height() );
426 :
427 1762 : pCol->ChgSize( aColSz );
428 :
429 1762 : if( IsBodyFrm() )
430 14 : static_cast<SwLayoutFrm*>(pCol)->Lower()->ChgSize( aColSz );
431 :
432 1762 : nAvail -= nWidth;
433 : }
434 : }
435 177 : }
436 :
437 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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