Bug Summary

File:home/maarten/src/libreoffice/core/include/rtl/ref.hxx
Warning:line 192, column 9
Use of memory after it is freed

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-unknown-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name csvruler.cxx -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -mframe-pointer=all -fmath-errno -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -fno-split-dwarf-inlining -debugger-tuning=gdb -resource-dir /usr/lib64/clang/11.0.0 -isystem /usr/include/libxml2 -D BOOST_ERROR_CODE_HEADER_ONLY -D BOOST_SYSTEM_NO_DEPRECATED -D CPPU_ENV=gcc3 -D LINUX -D OSL_DEBUG_LEVEL=1 -D SAL_LOG_INFO -D SAL_LOG_WARN -D UNIX -D UNX -D X86_64 -D _PTHREADS -D _REENTRANT -D SC_DLLIMPLEMENTATION -D SC_INFO_OSVERSION="LINUX" -D SYSTEM_LIBXML -D EXCEPTIONS_ON -D LIBO_INTERNAL_ONLY -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/liborcus/include -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/mdds/include -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/icu/source -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/icu/source/i18n -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/icu/source/common -I /home/maarten/src/libreoffice/core/external/clew/source/include -I /home/maarten/src/libreoffice/core/external/boost/include -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/boost -I /home/maarten/src/libreoffice/core/sc/source/core/inc -I /home/maarten/src/libreoffice/core/sc/source/filter/inc -I /home/maarten/src/libreoffice/core/sc/source/ui/inc -I /home/maarten/src/libreoffice/core/sc/inc -I /home/maarten/src/libreoffice/core/workdir/SdiTarget/sc/sdi -I /home/maarten/src/libreoffice/core/include -I /usr/lib/jvm/java-11-openjdk-11.0.9.10-0.0.ea.fc33.x86_64/include -I /usr/lib/jvm/java-11-openjdk-11.0.9.10-0.0.ea.fc33.x86_64/include/linux -I /home/maarten/src/libreoffice/core/config_host -I /home/maarten/src/libreoffice/core/workdir/CustomTarget/officecfg/registry -I /home/maarten/src/libreoffice/core/workdir/UnoApiHeadersTarget/udkapi/normal -I /home/maarten/src/libreoffice/core/workdir/UnoApiHeadersTarget/offapi/normal -I /home/maarten/src/libreoffice/core/workdir/UnoApiHeadersTarget/oovbaapi/normal -internal-isystem /usr/bin/../lib/gcc/x86_64-redhat-linux/10/../../../../include/c++/10 -internal-isystem /usr/bin/../lib/gcc/x86_64-redhat-linux/10/../../../../include/c++/10/x86_64-redhat-linux -internal-isystem /usr/bin/../lib/gcc/x86_64-redhat-linux/10/../../../../include/c++/10/backward -internal-isystem /usr/local/include -internal-isystem /usr/lib64/clang/11.0.0/include -internal-externc-isystem /include -internal-externc-isystem /usr/include -O0 -Wno-missing-braces -std=c++17 -fdeprecated-macro -fdebug-compilation-dir /home/maarten/src/libreoffice/core -ferror-limit 19 -fvisibility hidden -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -fcxx-exceptions -fexceptions -debug-info-kind=constructor -analyzer-output=html -faddrsig -o /home/maarten/tmp/wis/scan-build-libreoffice/output/report/2020-10-07-141433-9725-1 -x c++ /home/maarten/src/libreoffice/core/sc/source/ui/dbgui/csvruler.cxx

/home/maarten/src/libreoffice/core/sc/source/ui/dbgui/csvruler.cxx

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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 <csvruler.hxx>
21#include <AccessibleCsvControl.hxx>
22
23#include <optutil.hxx>
24#include <com/sun/star/uno/Any.hxx>
25#include <com/sun/star/uno/Sequence.hxx>
26#include <vcl/event.hxx>
27#include <vcl/settings.hxx>
28#include <vcl/ptrstyle.hxx>
29#include <vcl/svapp.hxx>
30#include <vcl/virdev.hxx>
31
32using namespace com::sun::star::uno;
33
34#define SEP_PATH"Office.Calc/Dialogs/CSVImport" "Office.Calc/Dialogs/CSVImport"
35#define FIXED_WIDTH_LIST"FixedWidthList" "FixedWidthList"
36
37static void load_FixedWidthList(ScCsvSplits &rSplits)
38{
39 Sequence<Any>aValues;
40 const Any *pProperties;
41 Sequence<OUString> aNames { FIXED_WIDTH_LIST"FixedWidthList" };
42 ScLinkConfigItem aItem( SEP_PATH"Office.Calc/Dialogs/CSVImport" );
43
44 aValues = aItem.GetProperties( aNames );
45 pProperties = aValues.getConstArray();
46
47 if( !pProperties[0].hasValue() )
48 return;
49
50 rSplits.Clear();
51
52 OUString sFixedWidthLists;
53 pProperties[0] >>= sFixedWidthLists;
54
55 sal_Int32 nIdx {0};
56 for(;;)
57 {
58 const sal_Int32 n {sFixedWidthLists.getToken(0, ';', nIdx).toInt32()};
59 if (nIdx<0)
60 {
61 // String ends with a semi-colon so there
62 // is no useful 'int' after the last one.
63 // This also works in case of empty string
64 break;
65 }
66 rSplits.Insert(n);
67 }
68}
69static void save_FixedWidthList(const ScCsvSplits& rSplits)
70{
71 OUStringBuffer sSplits;
72 // Create a semi-colon separated string to save the splits
73 sal_uInt32 n = rSplits.Count();
74 for (sal_uInt32 i = 0; i < n; ++i)
75 {
76 sSplits.append(OUString::number(rSplits[i]));
77 sSplits.append(";");
78 }
79
80 OUString sFixedWidthLists = sSplits.makeStringAndClear();
81 Sequence<Any> aValues;
82 Any *pProperties;
83 Sequence<OUString> aNames { FIXED_WIDTH_LIST"FixedWidthList" };
84 ScLinkConfigItem aItem( SEP_PATH"Office.Calc/Dialogs/CSVImport" );
85
86 aValues = aItem.GetProperties( aNames );
87 pProperties = aValues.getArray();
88 pProperties[0] <<= sFixedWidthLists;
89
90 aItem.PutProperties(aNames, aValues);
91}
92
93ScCsvRuler::ScCsvRuler(const ScCsvLayoutData& rData, ScCsvTableBox* pTableBox)
94 : ScCsvControl(rData)
95 , mpTableBox(pTableBox)
96 , mnPosCursorLast(1)
97 , mnPosMTStart(0)
98 , mnPosMTCurr(0)
99 , mbPosMTMoved(false)
100 , mnSplitSize(0)
101 , mbTracking(false)
102{
103}
104
105void ScCsvRuler::SetDrawingArea(weld::DrawingArea* pDrawingArea)
106{
107 ScCsvControl::SetDrawingArea(pDrawingArea);
108
109 UpdateSplitSize();
110
111 Size aSize(1, GetTextHeight() + mnSplitSize + 2);
112 pDrawingArea->set_size_request(aSize.Width(), aSize.Height());
113 SetOutputSizePixel(aSize);
114
115 EnableRTL( false ); // RTL
116 InitColors();
117 InitSizeData();
118
119 OutputDevice& rRefDevice = pDrawingArea->get_ref_device();
120 maBackgrDev->SetFont( rRefDevice.GetFont() );
121 maRulerDev->SetFont( rRefDevice.GetFont() );
122 load_FixedWidthList( maSplits );
123}
124
125ScCsvRuler::~ScCsvRuler()
126{
127 save_FixedWidthList( maSplits );
128}
1
Calling implicit destructor for 'ScopedVclPtrInstance<VirtualDevice>'
→
2
←
Calling '~ScopedVclPtr'
→
129
130// common ruler handling ------------------------------------------------------
131
132void ScCsvRuler::ApplyLayout( const ScCsvLayoutData& rOldData )
133{
134 ScCsvDiff nDiff = GetLayoutData().GetDiff( rOldData ) & (ScCsvDiff::HorizontalMask | ScCsvDiff::RulerCursor);
135 if( nDiff == ScCsvDiff::Equal ) return;
136
137 DisableRepaint();
138 if( nDiff & ScCsvDiff::HorizontalMask )
139 {
140 InitSizeData();
141 if( GetRulerCursorPos() >= GetPosCount() )
142 MoveCursor( GetPosCount() - 1 );
143 }
144 if( nDiff & ScCsvDiff::RulerCursor )
145 {
146 ImplInvertCursor( rOldData.mnPosCursor );
147 ImplInvertCursor( GetRulerCursorPos() );
148 }
149 EnableRepaint();
150
151 if( nDiff & ScCsvDiff::PosOffset )
152 AccSendVisibleEvent();
153}
154
155void ScCsvRuler::InitColors()
156{
157 const StyleSettings& rSett = Application::GetSettings().GetStyleSettings();
158 maBackColor = rSett.GetFaceColor();
159 maActiveColor = rSett.GetWindowColor();
160 maTextColor = rSett.GetLabelTextColor();
161 maSplitColor = maBackColor.IsDark() ? maTextColor : COL_LIGHTRED;
162 InvalidateGfx();
163}
164
165void ScCsvRuler::UpdateSplitSize()
166{
167 mnSplitSize = (GetCharWidth() * 3 / 5) | 1; // make an odd number
168}
169
170void ScCsvRuler::InitSizeData()
171{
172 maWinSize = GetOutputSizePixel();
173
174 UpdateSplitSize();
175
176 sal_Int32 nActiveWidth = std::min( GetWidth() - GetHdrWidth(), GetPosCount() * GetCharWidth() );
177 sal_Int32 nActiveHeight = GetTextHeight();
178
179 maActiveRect.SetPos( Point( GetFirstX(), (GetHeight() - nActiveHeight - 1) / 2 ) );
180 maActiveRect.SetSize( Size( nActiveWidth, nActiveHeight ) );
181
182 maBackgrDev->SetOutputSizePixel( maWinSize );
183 maRulerDev->SetOutputSizePixel( maWinSize );
184
185 InvalidateGfx();
186}
187
188void ScCsvRuler::MoveCursor( sal_Int32 nPos, bool bScroll )
189{
190 DisableRepaint();
191 if( bScroll )
192 Execute( CSVCMD_MAKEPOSVISIBLE, nPos );
193 Execute( CSVCMD_MOVERULERCURSOR, IsVisibleSplitPos( nPos ) ? nPos : CSV_POS_INVALID );
194 EnableRepaint();
195 AccSendCaretEvent();
196}
197
198void ScCsvRuler::MoveCursorRel( ScMoveMode eDir )
199{
200 if( GetRulerCursorPos() == CSV_POS_INVALID )
201 return;
202
203 switch( eDir )
204 {
205 case MOVE_FIRST:
206 MoveCursor( 1 );
207 break;
208 case MOVE_LAST:
209 MoveCursor( GetPosCount() - 1 );
210 break;
211 case MOVE_PREV:
212 if( GetRulerCursorPos() > 1 )
213 MoveCursor( GetRulerCursorPos() - 1 );
214 break;
215 case MOVE_NEXT:
216 if( GetRulerCursorPos() < GetPosCount() - 1 )
217 MoveCursor( GetRulerCursorPos() + 1 );
218 break;
219 default:
220 {
221 // added to avoid warnings
222 }
223 }
224}
225
226void ScCsvRuler::MoveCursorToSplit( ScMoveMode eDir )
227{
228 if( GetRulerCursorPos() == CSV_POS_INVALID )
229 return;
230
231 sal_uInt32 nIndex = CSV_VEC_NOTFOUND;
232 switch( eDir )
233 {
234 case MOVE_FIRST: nIndex = maSplits.LowerBound( 0 ); break;
235 case MOVE_LAST: nIndex = maSplits.UpperBound( GetPosCount() ); break;
236 case MOVE_PREV: nIndex = maSplits.UpperBound( GetRulerCursorPos() - 1 ); break;
237 case MOVE_NEXT: nIndex = maSplits.LowerBound( GetRulerCursorPos() + 1 ); break;
238 default:
239 {
240 // added to avoid warnings
241 }
242 }
243 sal_Int32 nPos = maSplits[ nIndex ];
244 if( nPos != CSV_POS_INVALID )
245 MoveCursor( nPos );
246}
247
248void ScCsvRuler::ScrollVertRel( ScMoveMode eDir )
249{
250 sal_Int32 nLine = GetFirstVisLine();
251 switch( eDir )
252 {
253 case MOVE_PREV: --nLine; break;
254 case MOVE_NEXT: ++nLine; break;
255 case MOVE_PREVPAGE: nLine -= GetVisLineCount() - 1; break;
256 case MOVE_NEXTPAGE: nLine += GetVisLineCount() - 1; break;
257 default:
258 {
259 // added to avoid warnings
260 }
261 }
262 Execute( CSVCMD_SETLINEOFFSET, nLine );
263}
264
265// split handling -------------------------------------------------------------
266
267sal_Int32 ScCsvRuler::GetNoScrollPos( sal_Int32 nPos ) const
268{
269 sal_Int32 nNewPos = nPos;
270 if( nNewPos != CSV_POS_INVALID )
271 {
272 if( nNewPos < GetFirstVisPos() + CSV_SCROLL_DIST )
273 {
274 sal_Int32 nScroll = (GetFirstVisPos() > 0) ? CSV_SCROLL_DIST : 0;
275 nNewPos = std::max( nPos, GetFirstVisPos() + nScroll );
276 }
277 else if( nNewPos > GetLastVisPos() - CSV_SCROLL_DIST - 1 )
278 {
279 sal_Int32 nScroll = (GetFirstVisPos() < GetMaxPosOffset()) ? CSV_SCROLL_DIST : 0;
280 nNewPos = std::min( nNewPos, GetLastVisPos() - nScroll - sal_Int32( 1 ) );
281 }
282 }
283 return nNewPos;
284}
285
286void ScCsvRuler::InsertSplit( sal_Int32 nPos )
287{
288 if( maSplits.Insert( nPos ) )
289 {
290 ImplDrawSplit( nPos );
291 Repaint();
292 }
293}
294
295void ScCsvRuler::RemoveSplit( sal_Int32 nPos )
296{
297 if( maSplits.Remove( nPos ) )
298 {
299 ImplEraseSplit( nPos );
300 Repaint();
301 }
302}
303
304void ScCsvRuler::MoveSplit( sal_Int32 nPos, sal_Int32 nNewPos )
305{
306 bool bRemove = maSplits.Remove( nPos );
307 bool bInsert = maSplits.Insert( nNewPos );
308 if( bRemove || bInsert )
309 {
310 ImplEraseSplit( nPos );
311 ImplDrawSplit( nNewPos );
312 Repaint();
313 }
314}
315
316void ScCsvRuler::RemoveAllSplits()
317{
318 maSplits.Clear();
319 Repaint( true );
320}
321
322sal_Int32 ScCsvRuler::FindEmptyPos( sal_Int32 nPos, ScMoveMode eDir ) const
323{
324 sal_Int32 nNewPos = nPos;
325 if( nNewPos != CSV_POS_INVALID )
326 {
327 switch( eDir )
328 {
329 case MOVE_FIRST:
330 nNewPos = std::min( nPos, FindEmptyPos( 0, MOVE_NEXT ) );
331 break;
332 case MOVE_LAST:
333 nNewPos = std::max( nPos, FindEmptyPos( GetPosCount(), MOVE_PREV ) );
334 break;
335 case MOVE_PREV:
336 while( HasSplit( --nNewPos ) ) ;
337 break;
338 case MOVE_NEXT:
339 while( HasSplit( ++nNewPos ) ) ;
340 break;
341 default:
342 {
343 // added to avoid warnings
344 }
345 }
346 }
347 return IsValidSplitPos( nNewPos ) ? nNewPos : CSV_POS_INVALID;
348}
349
350void ScCsvRuler::MoveCurrSplit( sal_Int32 nNewPos )
351{
352 DisableRepaint();
353 Execute( CSVCMD_MOVESPLIT, GetRulerCursorPos(), nNewPos );
354 MoveCursor( nNewPos );
355 EnableRepaint();
356}
357
358void ScCsvRuler::MoveCurrSplitRel( ScMoveMode eDir )
359{
360 if( HasSplit( GetRulerCursorPos() ) )
361 {
362 sal_Int32 nNewPos = FindEmptyPos( GetRulerCursorPos(), eDir );
363 if( nNewPos != CSV_POS_INVALID )
364 MoveCurrSplit( nNewPos );
365 }
366}
367
368// event handling -------------------------------------------------------------
369
370void ScCsvRuler::Resize()
371{
372 ScCsvControl::Resize();
373 InitSizeData();
374 Repaint();
375}
376
377void ScCsvRuler::GetFocus()
378{
379 ScCsvControl::GetFocus();
380 DisableRepaint();
381 if( GetRulerCursorPos() == CSV_POS_INVALID )
382 MoveCursor( GetNoScrollPos( mnPosCursorLast ) );
383 EnableRepaint();
384}
385
386void ScCsvRuler::LoseFocus()
387{
388 ScCsvControl::LoseFocus();
389 mnPosCursorLast = GetRulerCursorPos();
390 MoveCursor( CSV_POS_INVALID );
391}
392
393void ScCsvRuler::StyleUpdated()
394{
395 InitColors();
396 Repaint();
397
398 ScCsvControl::StyleUpdated();
399}
400
401bool ScCsvRuler::MouseButtonDown( const MouseEvent& rMEvt )
402{
403 DisableRepaint();
404 if( !HasFocus() )
405 GrabFocus();
406 if( rMEvt.IsLeft() )
407 {
408 sal_Int32 nPos = GetPosFromX( rMEvt.GetPosPixel().X() );
409 if( IsVisibleSplitPos( nPos ) )
410 StartMouseTracking( nPos );
411 ImplSetMousePointer( nPos );
412 }
413 EnableRepaint();
414 return true;
415}
416
417bool ScCsvRuler::MouseButtonUp( const MouseEvent& )
418{
419 if (mbTracking)
420 {
421 EndMouseTracking();
422 mbTracking = false;
423 }
424 return true;
425}
426
427bool ScCsvRuler::MouseMove( const MouseEvent& rMEvt )
428{
429 if( !rMEvt.IsModifierChanged() )
430 {
431 sal_Int32 nPos = GetPosFromX( rMEvt.GetPosPixel().X() );
432 if( mbTracking )
433 {
434 // on mouse tracking: keep position valid
435 nPos = std::max( std::min( nPos, GetPosCount() - sal_Int32( 1 ) ), sal_Int32( 1 ) );
436 MoveMouseTracking( nPos );
437 }
438 else
439 {
440 tools::Rectangle aRect( Point(), maWinSize );
441 if( !IsVisibleSplitPos( nPos ) || !aRect.IsInside( rMEvt.GetPosPixel() ) )
442 // if focused, keep old cursor position for key input
443 nPos = HasFocus() ? GetRulerCursorPos() : CSV_POS_INVALID;
444 MoveCursor( nPos, false );
445 }
446 ImplSetMousePointer( nPos );
447 }
448 return true;
449}
450
451bool ScCsvRuler::KeyInput( const KeyEvent& rKEvt )
452{
453 const vcl::KeyCode& rKCode = rKEvt.GetKeyCode();
454 sal_uInt16 nCode = rKCode.GetCode();
455 bool bNoMod = !rKCode.GetModifier();
456 bool bShift = (rKCode.GetModifier() == KEY_SHIFT);
457 bool bJump = (rKCode.GetModifier() == KEY_MOD1);
458 bool bMove = (rKCode.GetModifier() == (KEY_MOD1 | KEY_SHIFT));
459
460 ScMoveMode eHDir = GetHorzDirection( nCode, true );
461 ScMoveMode eVDir = GetVertDirection( nCode, false );
462
463 if( bNoMod )
464 {
465 if( eHDir != MOVE_NONE )
466 MoveCursorRel( eHDir );
467 else if( eVDir != MOVE_NONE )
468 ScrollVertRel( eVDir );
469 else switch( nCode )
470 {
471 case KEY_SPACE: Execute( CSVCMD_TOGGLESPLIT, GetRulerCursorPos() ); break;
472 case KEY_INSERT: Execute( CSVCMD_INSERTSPLIT, GetRulerCursorPos() ); break;
473 case KEY_DELETE: Execute( CSVCMD_REMOVESPLIT, GetRulerCursorPos() ); break;
474 }
475 }
476 else if( bJump && (eHDir != MOVE_NONE) )
477 MoveCursorToSplit( eHDir );
478 else if( bMove && (eHDir != MOVE_NONE) )
479 MoveCurrSplitRel( eHDir );
480 else if( bShift && (nCode == KEY_DELETE) )
481 Execute( CSVCMD_REMOVEALLSPLITS );
482
483 return rKCode.GetGroup() == KEYGROUP_CURSOR;
484}
485
486void ScCsvRuler::StartMouseTracking( sal_Int32 nPos )
487{
488 mnPosMTStart = mnPosMTCurr = nPos;
489 mbPosMTMoved = false;
490 maOldSplits = maSplits;
491 Execute( CSVCMD_INSERTSPLIT, nPos );
492 if( HasSplit( nPos ) )
493 mbTracking = true;
494}
495
496void ScCsvRuler::MoveMouseTracking( sal_Int32 nPos )
497{
498 if( mnPosMTCurr != nPos )
499 {
500 DisableRepaint();
501 MoveCursor( nPos );
502 if( (mnPosMTCurr != mnPosMTStart) && maOldSplits.HasSplit( mnPosMTCurr ) )
503 Execute( CSVCMD_INSERTSPLIT, nPos );
504 else
505 Execute( CSVCMD_MOVESPLIT, mnPosMTCurr, nPos );
506 mnPosMTCurr = nPos;
507 mbPosMTMoved = true;
508 EnableRepaint();
509 }
510}
511
512void ScCsvRuler::EndMouseTracking()
513{
514 // remove on simple click on an existing split
515 if( (mnPosMTCurr == mnPosMTStart) && maOldSplits.HasSplit( mnPosMTCurr ) && !mbPosMTMoved )
516 Execute( CSVCMD_REMOVESPLIT, mnPosMTCurr );
517 mnPosMTStart = CSV_POS_INVALID;
518}
519
520// painting -------------------------------------------------------------------
521
522void ScCsvRuler::Paint( vcl::RenderContext& rRenderContext, const tools::Rectangle& )
523{
524 ImplRedraw(rRenderContext);
525}
526
527void ScCsvRuler::ImplRedraw(vcl::RenderContext& rRenderContext)
528{
529 if( IsVisible() )
530 {
531 if( !IsValidGfx() )
532 {
533 ValidateGfx();
534 ImplDrawBackgrDev();
535 ImplDrawRulerDev();
536 }
537 rRenderContext.DrawOutDev( Point(), maWinSize, Point(), maWinSize, *maRulerDev );
538 }
539}
540
541tools::Rectangle ScCsvRuler::GetFocusRect()
542{
543 /* Draws directly tracking rectangle to the column with the specified index. */
544 if(HasFocus())
545 return tools::Rectangle(0, 0, GetWidth() - 1, GetHeight() - 2);
546 return weld::CustomWidgetController::GetFocusRect();
547}
548
549void ScCsvRuler::ImplDrawArea( sal_Int32 nPosX, sal_Int32 nWidth )
550{
551 maBackgrDev->SetLineColor();
552 tools::Rectangle aRect( Point( nPosX, 0 ), Size( nWidth, GetHeight() ) );
553 maBackgrDev->SetFillColor( maBackColor );
554 maBackgrDev->DrawRect( aRect );
555
556 aRect = maActiveRect;
557 aRect.SetLeft( std::max( GetFirstX(), nPosX ) );
558 aRect.SetRight( std::min( std::min( GetX( GetPosCount() ), GetLastX() ), nPosX + nWidth - sal_Int32( 1 ) ) );
559 if( aRect.Left() <= aRect.Right() )
560 {
561 maBackgrDev->SetFillColor( maActiveColor );
562 maBackgrDev->DrawRect( aRect );
563 }
564
565 maBackgrDev->SetLineColor( maTextColor );
566 sal_Int32 nY = GetHeight() - 1;
567 maBackgrDev->DrawLine( Point( nPosX, nY ), Point( nPosX + nWidth - 1, nY ) );
568}
569
570void ScCsvRuler::ImplDrawBackgrDev()
571{
572 ImplDrawArea( 0, GetWidth() );
573
574 // scale
575 maBackgrDev->SetLineColor( maTextColor );
576 maBackgrDev->SetFillColor();
577 sal_Int32 nPos;
578
579 sal_Int32 nFirstPos = std::max( GetPosFromX( 0 ) - 1, sal_Int32(0) );
580 sal_Int32 nLastPos = GetPosFromX( GetWidth() );
581 sal_Int32 nY = (maActiveRect.Top() + maActiveRect.Bottom()) / 2;
582 for( nPos = nFirstPos; nPos <= nLastPos; ++nPos )
583 {
584 sal_Int32 nX = GetX( nPos );
585 if( nPos % 5 )
586 maBackgrDev->DrawPixel( Point( nX, nY ) );
587 else
588 maBackgrDev->DrawLine( Point( nX, nY - 1 ), Point( nX, nY + 1 ) );
589 }
590
591 // texts
592 maBackgrDev->SetTextColor( maTextColor );
593 maBackgrDev->SetTextFillColor();
594 for( nPos = ((nFirstPos + 9) / 10) * 10; nPos <= nLastPos; nPos += 10 )
595 {
596 OUString aText( OUString::number( nPos ) );
597 sal_Int32 nTextWidth = maBackgrDev->GetTextWidth( aText );
598 sal_Int32 nTextX = GetX( nPos ) - nTextWidth / 2;
599 ImplDrawArea( nTextX - 1, nTextWidth + 2 );
600 maBackgrDev->DrawText( Point( nTextX, maActiveRect.Top() ), aText );
601 }
602}
603
604void ScCsvRuler::ImplDrawSplit( sal_Int32 nPos )
605{
606 if( IsVisibleSplitPos( nPos ) )
607 {
608 Point aPos( GetX( nPos ) - mnSplitSize / 2, GetHeight() - mnSplitSize - 2 );
609 Size aSize( mnSplitSize, mnSplitSize );
610 maRulerDev->SetLineColor( maTextColor );
611 maRulerDev->SetFillColor( maSplitColor );
612 maRulerDev->DrawEllipse( tools::Rectangle( aPos, aSize ) );
613 maRulerDev->DrawPixel( Point( GetX( nPos ), GetHeight() - 2 ) );
614 }
615}
616
617void ScCsvRuler::ImplEraseSplit( sal_Int32 nPos )
618{
619 if( IsVisibleSplitPos( nPos ) )
620 {
621 ImplInvertCursor( GetRulerCursorPos() );
622 Point aPos( GetX( nPos ) - mnSplitSize / 2, 0 );
623 Size aSize( mnSplitSize, GetHeight() );
624 maRulerDev->DrawOutDev( aPos, aSize, aPos, aSize, *maBackgrDev );
625 ImplInvertCursor( GetRulerCursorPos() );
626 }
627}
628
629void ScCsvRuler::ImplDrawRulerDev()
630{
631 maRulerDev->DrawOutDev( Point(), maWinSize, Point(), maWinSize, *maBackgrDev );
632 ImplInvertCursor( GetRulerCursorPos() );
633
634 sal_uInt32 nFirst = maSplits.LowerBound( GetFirstVisPos() );
635 sal_uInt32 nLast = maSplits.UpperBound( GetLastVisPos() );
636 if( (nFirst != CSV_VEC_NOTFOUND) && (nLast != CSV_VEC_NOTFOUND) )
637 for( sal_uInt32 nIndex = nFirst; nIndex <= nLast; ++nIndex )
638 ImplDrawSplit( GetSplitPos( nIndex ) );
639}
640
641void ScCsvRuler::ImplInvertCursor( sal_Int32 nPos )
642{
643 if( IsVisibleSplitPos( nPos ) )
644 {
645 ImplInvertRect( *maRulerDev, tools::Rectangle( Point( GetX( nPos ) - 1, 0 ), Size( 3, GetHeight() - 1 ) ) );
646 if( HasSplit( nPos ) )
647 ImplDrawSplit( nPos );
648 }
649}
650
651void ScCsvRuler::ImplSetMousePointer( sal_Int32 nPos )
652{
653 SetPointer( HasSplit( nPos ) ? PointerStyle::HSplit : PointerStyle::Arrow );
654}
655
656// accessibility ==============================================================
657
658css::uno::Reference<css::accessibility::XAccessible> ScCsvRuler::CreateAccessible()
659{
660 rtl::Reference<ScAccessibleCsvRuler> xRef(new ScAccessibleCsvRuler(*this));
661 mxAccessible.set(xRef.get());
662 return css::uno::Reference<css::accessibility::XAccessible>(xRef.get());
663}
664
665/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
←

/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx

→
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_VCL_PTR_HXX
21#define INCLUDED_VCL_PTR_HXX
22
23#include <sal/config.h>
24
25#include <rtl/ref.hxx>
26
27#include <utility>
28#include <type_traits>
29
30#ifdef DBG_UTIL
31#ifndef _WIN32
32#include <vcl/vclmain.hxx>
33#endif
34#endif
35
36class VclReferenceBase;
37
38namespace vcl::detail {
39
40template<typename>
41constexpr bool isIncompleteOrDerivedFromVclReferenceBase(...) { return true; }
42
43template<typename T> constexpr bool isIncompleteOrDerivedFromVclReferenceBase(
44 int (*)[sizeof(T)])
45{ return std::is_base_of<VclReferenceBase, T>::value; }
46
47} // namespace vcl::detail
48
49/**
50 * A thin wrapper around rtl::Reference to implement the acquire and dispose semantics we want for references to vcl::Window subclasses.
51 *
52 * For more details on the design please see vcl/README.lifecycle
53 *
54 * @param reference_type must be a subclass of vcl::Window
55 */
56template <class reference_type>
57class VclPtr
58{
59 static_assert(
60 vcl::detail::isIncompleteOrDerivedFromVclReferenceBase<reference_type>(
61 nullptr),
62 "template argument type must be derived from VclReferenceBase");
63
64 ::rtl::Reference<reference_type> m_rInnerRef;
65
66public:
67 /** Constructor...
68 */
69 VclPtr()
70 : m_rInnerRef()
71 {}
72
73 /** Constructor...
74 */
75 VclPtr (reference_type * pBody)
76 : m_rInnerRef(pBody)
77 {}
78
79 /** Constructor... that doesn't take a ref.
80 */
81 VclPtr (reference_type * pBody, __sal_NoAcquire)
82 : m_rInnerRef(pBody, SAL_NO_ACQUIRE)
83 {}
84
85 /** Up-casting conversion constructor: Copies interface reference.
86
87 Does not work for up-casts to ambiguous bases. For the special case of
88 up-casting to Reference< XInterface >, see the corresponding conversion
89 operator.
90
91 @param rRef another reference
92 */
93 template< class derived_type >
94 VclPtr(
95 const VclPtr< derived_type > & rRef,
96 typename std::enable_if<
97 std::is_base_of<reference_type, derived_type>::value, int>::type
98 = 0 )
99 : m_rInnerRef( static_cast<reference_type*>(rRef) )
100 {
101 }
102
103#if defined(DBG_UTIL) && !defined(_WIN32)
104 virtual ~VclPtr()
105 {
106 assert(m_rInnerRef.get() == nullptr || vclmain::isAlive())(static_cast <bool> (m_rInnerRef.get() == nullptr || vclmain
::isAlive()) ? void (0) : __assert_fail ("m_rInnerRef.get() == nullptr || vclmain::isAlive()"
, "/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx"
, 106, __extension__ __PRETTY_FUNCTION__));
107 // We can be one of the intermediate counts, but if we are the last
108 // VclPtr keeping this object alive, then something forgot to call dispose().
109 assert((!m_rInnerRef.get() || m_rInnerRef->isDisposed() || m_rInnerRef->getRefCount() > 1)(static_cast <bool> ((!m_rInnerRef.get() || m_rInnerRef
->isDisposed() || m_rInnerRef->getRefCount() > 1) &&
"someone forgot to call dispose()") ? void (0) : __assert_fail
("(!m_rInnerRef.get() || m_rInnerRef->isDisposed() || m_rInnerRef->getRefCount() > 1) && \"someone forgot to call dispose()\""
, "/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx"
, 110, __extension__ __PRETTY_FUNCTION__))
110 && "someone forgot to call dispose()")(static_cast <bool> ((!m_rInnerRef.get() || m_rInnerRef
->isDisposed() || m_rInnerRef->getRefCount() > 1) &&
"someone forgot to call dispose()") ? void (0) : __assert_fail
("(!m_rInnerRef.get() || m_rInnerRef->isDisposed() || m_rInnerRef->getRefCount() > 1) && \"someone forgot to call dispose()\""
, "/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx"
, 110, __extension__ __PRETTY_FUNCTION__));
111 }
112 VclPtr(VclPtr const &) = default;
113 VclPtr(VclPtr &&) = default;
114 VclPtr & operator =(VclPtr const &) = default;
115 VclPtr & operator =(VclPtr &&) = default;
116#endif
117
118 /**
119 * A construction helper for VclPtr. Since VclPtr types are created
120 * with a reference-count of one - to help fit into the existing
121 * code-flow; this helps us to construct them easily.
122 *
123 * For more details on the design please see vcl/README.lifecycle
124 *
125 * @tparam reference_type must be a subclass of vcl::Window
126 */
127 template<typename... Arg> [[nodiscard]] static VclPtr< reference_type > Create(Arg &&... arg)
128 {
129 return VclPtr< reference_type >( new reference_type(std::forward<Arg>(arg)...), SAL_NO_ACQUIRE );
130 }
131
132 /** Probably most common used: handle->someBodyOp().
133 */
134 reference_type * operator->() const
135 {
136 return m_rInnerRef.get();
137 }
138
139 /** Get the body. Can be used instead of operator->().
140 I.e. handle->someBodyOp() and handle.get()->someBodyOp()
141 are the same.
142 */
143 reference_type * get() const
144 {
145 return m_rInnerRef.get();
146 }
147
148 void set(reference_type *pBody)
149 {
150 m_rInnerRef.set(pBody);
151 }
152
153 void reset(reference_type *pBody)
154 {
155 m_rInnerRef.set(pBody);
156 }
157
158 /** Up-casting copy assignment operator.
159
160 Does not work for up-casts to ambiguous bases.
161
162 @param rRef another reference
163 */
164 template<typename derived_type>
165 typename std::enable_if<
166 std::is_base_of<reference_type, derived_type>::value,
167 VclPtr &>::type
168 operator =(VclPtr<derived_type> const & rRef)
169 {
170 m_rInnerRef.set(rRef.get());
171 return *this;
172 }
173
174 VclPtr & operator =(reference_type * pBody)
175 {
176 m_rInnerRef.set(pBody);
177 return *this;
178 }
179
180 operator reference_type * () const
181 {
182 return m_rInnerRef.get();
183 }
184
185 explicit operator bool () const
186 {
187 return m_rInnerRef.get() != nullptr;
188 }
189
190 void clear()
191 {
192 m_rInnerRef.clear();
193 }
194
195 void reset()
196 {
197 m_rInnerRef.clear();
198 }
199
200 void disposeAndClear()
201 {
202 // hold it alive for the lifetime of this method
203 ::rtl::Reference<reference_type> aTmp(m_rInnerRef);
4
←
Calling copy constructor for 'Reference<VirtualDevice>'
→
7
←
Returning from copy constructor for 'Reference<VirtualDevice>'
→
204 m_rInnerRef.clear(); // we should use some 'swap' method ideally ;-)
8
←
Calling 'Reference::clear'
→
15
←
Returning; memory was released
→
205 if (aTmp.get()) {
16
←
Calling 'Reference::get'
→
206 aTmp->disposeOnce();
207 }
208 }
209
210 /** Needed to place VclPtr's into STL collection.
211 */
212 bool operator< (const VclPtr<reference_type> & handle) const
213 {
214 return (m_rInnerRef < handle.m_rInnerRef);
215 }
216}; // class VclPtr
217
218template<typename T1, typename T2>
219inline bool operator ==(VclPtr<T1> const & p1, VclPtr<T2> const & p2) {
220 return p1.get() == p2.get();
221}
222
223template<typename T> inline bool operator ==(VclPtr<T> const & p1, T const * p2)
224{
225 return p1.get() == p2;
226}
227
228template<typename T> inline bool operator ==(VclPtr<T> const & p1, T * p2) {
229 return p1.get() == p2;
230}
231
232template<typename T> inline bool operator ==(T const * p1, VclPtr<T> const & p2)
233{
234 return p1 == p2.get();
235}
236
237template<typename T> inline bool operator ==(T * p1, VclPtr<T> const & p2) {
238 return p1 == p2.get();
239}
240
241template<typename T1, typename T2>
242inline bool operator !=(VclPtr<T1> const & p1, VclPtr<T2> const & p2) {
243 return !(p1 == p2);
244}
245
246template<typename T> inline bool operator !=(VclPtr<T> const & p1, T const * p2)
247{
248 return !(p1 == p2);
249}
250
251template<typename T> inline bool operator !=(VclPtr<T> const & p1, T * p2) {
252 return !(p1 == p2);
253}
254
255template<typename T> inline bool operator !=(T const * p1, VclPtr<T> const & p2)
256{
257 return !(p1 == p2);
258}
259
260template<typename T> inline bool operator !=(T * p1, VclPtr<T> const & p2) {
261 return !(p1 == p2);
262}
263
264/**
265 * A construction helper for a temporary VclPtr. Since VclPtr types
266 * are created with a reference-count of one - to help fit into
267 * the existing code-flow; this helps us to construct them easily.
268 * see also VclPtr::Create and ScopedVclPtr
269 *
270 * For more details on the design please see vcl/README.lifecycle
271 *
272 * @param reference_type must be a subclass of vcl::Window
273 */
274template <class reference_type>
275class SAL_WARN_UNUSED__attribute__((warn_unused)) VclPtrInstance final : public VclPtr<reference_type>
276{
277public:
278 template<typename... Arg> VclPtrInstance(Arg &&... arg)
279 : VclPtr<reference_type>( new reference_type(std::forward<Arg>(arg)...), SAL_NO_ACQUIRE )
280 {
281 }
282
283 /**
284 * Override and disallow this, to prevent people accidentally calling it and actually
285 * getting VclPtr::Create and getting a naked VclPtr<> instance
286 */
287 template<typename... Arg> static VclPtrInstance< reference_type > Create(Arg &&... ) = delete;
288};
289
290template <class reference_type>
291class ScopedVclPtr : public VclPtr<reference_type>
292{
293public:
294 /** Constructor...
295 */
296 ScopedVclPtr()
297 : VclPtr<reference_type>()
298 {}
299
300 /** Constructor
301 */
302 ScopedVclPtr (reference_type * pBody)
303 : VclPtr<reference_type>(pBody)
304 {}
305
306 /** Copy constructor...
307 */
308 ScopedVclPtr (const VclPtr<reference_type> & handle)
309 : VclPtr<reference_type>(handle)
310 {}
311
312 /**
313 Assignment that releases the last reference.
314 */
315 void disposeAndReset(reference_type *pBody)
316 {
317 if (pBody != this->get()) {
318 VclPtr<reference_type>::disposeAndClear();
319 VclPtr<reference_type>::set(pBody);
320 }
321 }
322
323 /**
324 Assignment that releases the last reference.
325 */
326 ScopedVclPtr<reference_type>& operator = (reference_type * pBody)
327 {
328 disposeAndReset(pBody);
329 return *this;
330 }
331
332 /** Up-casting conversion constructor: Copies interface reference.
333
334 Does not work for up-casts to ambiguous bases. For the special case of
335 up-casting to Reference< XInterface >, see the corresponding conversion
336 operator.
337
338 @param rRef another reference
339 */
340 template< class derived_type >
341 ScopedVclPtr(
342 const VclPtr< derived_type > & rRef,
343 typename std::enable_if<
344 std::is_base_of<reference_type, derived_type>::value, int>::type
345 = 0 )
346 : VclPtr<reference_type>( rRef )
347 {
348 }
349
350 /** Up-casting assignment operator.
351
352 Does not work for up-casts to ambiguous bases.
353
354 @param rRef another VclPtr
355 */
356 template<typename derived_type>
357 typename std::enable_if<
358 std::is_base_of<reference_type, derived_type>::value,
359 ScopedVclPtr &>::type
360 operator =(VclPtr<derived_type> const & rRef)
361 {
362 disposeAndReset(rRef.get());
363 return *this;
364 }
365
366 /**
367 * Override and disallow this, to prevent people accidentally calling it and actually
368 * getting VclPtr::Create and getting a naked VclPtr<> instance
369 */
370 template<typename... Arg> static ScopedVclPtr< reference_type > Create(Arg &&... ) = delete;
371
372 ~ScopedVclPtr()
373 {
374 VclPtr<reference_type>::disposeAndClear();
3
←
Calling 'VclPtr::disposeAndClear'
→
375 assert(VclPtr<reference_type>::get() == nullptr)(static_cast <bool> (VclPtr<reference_type>::get(
) == nullptr) ? void (0) : __assert_fail ("VclPtr<reference_type>::get() == nullptr"
, "/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx"
, 375, __extension__ __PRETTY_FUNCTION__)); // make sure there are no lingering references
376 }
377
378private:
379 // Most likely we don't want this default copy-constructor.
380 ScopedVclPtr (const ScopedVclPtr<reference_type> &) = delete;
381 // And certainly we don't want a default assignment operator.
382 ScopedVclPtr<reference_type>& operator = (const ScopedVclPtr<reference_type> &) = delete;
383 // And disallow reset as that doesn't call disposeAndClear on the original reference
384 void reset() = delete;
385 void reset(reference_type *pBody) = delete;
386
387protected:
388 ScopedVclPtr (reference_type * pBody, __sal_NoAcquire)
389 : VclPtr<reference_type>(pBody, SAL_NO_ACQUIRE)
390 {}
391};
392
393/**
394 * A construction helper for ScopedVclPtr. Since VclPtr types are created
395 * with a reference-count of one - to help fit into the existing
396 * code-flow; this helps us to construct them easily.
397 *
398 * For more details on the design please see vcl/README.lifecycle
399 *
400 * @param reference_type must be a subclass of vcl::Window
401 */
402#if defined _MSC_VER
403#pragma warning(push)
404#pragma warning(disable: 4521) // " multiple copy constructors specified"
405#endif
406template <class reference_type>
407class SAL_WARN_UNUSED__attribute__((warn_unused)) ScopedVclPtrInstance final : public ScopedVclPtr<reference_type>
408{
409public:
410 template<typename... Arg> ScopedVclPtrInstance(Arg &&... arg)
411 : ScopedVclPtr<reference_type>( new reference_type(std::forward<Arg>(arg)...), SAL_NO_ACQUIRE )
412 {
413 }
414
415 /**
416 * Override and disallow this, to prevent people accidentally calling it and actually
417 * getting VclPtr::Create and getting a naked VclPtr<> instance
418 */
419 template<typename... Arg> static ScopedVclPtrInstance< reference_type > Create(Arg &&...) = delete;
420
421private:
422 // Prevent the above perfect forwarding ctor from hijacking (accidental)
423 // attempts at ScopedVclPtrInstance copy construction (where the hijacking
424 // would typically lead to somewhat obscure error messages); both non-const
425 // and const variants are needed here, as the ScopedVclPtr base class has a
426 // const--variant copy ctor, so the implicitly declared copy ctor for
427 // ScopedVclPtrInstance would also be the const variant, so non-const copy
428 // construction attempts would be hijacked by the perfect forwarding ctor;
429 // but if we only declared a non-const variant here, the const variant would
430 // no longer be implicitly declared (as there would already be an explicitly
431 // declared copy ctor), so const copy construction attempts would then be
432 // hijacked by the perfect forwarding ctor:
433 ScopedVclPtrInstance(ScopedVclPtrInstance &) = delete;
434 ScopedVclPtrInstance(ScopedVclPtrInstance const &) = delete;
435};
436#if defined _MSC_VER
437#pragma warning(pop)
438#endif
439
440#endif // INCLUDED_VCL_PTR_HXX
441
442/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
←

/home/maarten/src/libreoffice/core/include/rtl/ref.hxx

→
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_RTL_REF_HXX
21#define INCLUDED_RTL_REF_HXX
22
23#include "sal/config.h"
24
25#include <cassert>
26#include <cstddef>
27#include <functional>
28#ifdef LIBO_INTERNAL_ONLY1
29#include <type_traits>
30#endif
31
32#include "sal/types.h"
33
34namespace rtl
35{
36
37/** Template reference class for reference type.
38*/
39template <class reference_type>
40class Reference
41{
42 /** The <b>reference_type</b> body pointer.
43 */
44 reference_type * m_pBody;
45
46
47public:
48 /** Constructor...
49 */
50 Reference()
51 : m_pBody (NULL__null)
52 {}
53
54
55 /** Constructor...
56 */
57 Reference (reference_type * pBody, __sal_NoAcquire)
58 : m_pBody (pBody)
59 {
60 }
61
62 /** Constructor...
63 */
64 Reference (reference_type * pBody)
65 : m_pBody (pBody)
66 {
67 if (m_pBody)
68 m_pBody->acquire();
69 }
70
71 /** Copy constructor...
72 */
73 Reference (const Reference<reference_type> & handle)
74 : m_pBody (handle.m_pBody)
75 {
76 if (m_pBody)
5
←
Assuming field 'm_pBody' is non-null
→
6
←
Taking true branch
→
77 m_pBody->acquire();
78 }
79
80#ifdef LIBO_INTERNAL_ONLY1
81 /** Move constructor...
82 */
83 Reference (Reference<reference_type> && handle) noexcept
84 : m_pBody (handle.m_pBody)
85 {
86 handle.m_pBody = nullptr;
87 }
88#endif
89
90#if defined LIBO_INTERNAL_ONLY1
91 /** Up-casting conversion constructor: Copies interface reference.
92
93 Does not work for up-casts to ambiguous bases.
94
95 @param rRef another reference
96 */
97 template< class derived_type >
98 inline Reference(
99 const Reference< derived_type > & rRef,
100 std::enable_if_t<std::is_base_of_v<reference_type, derived_type>, int> = 0 )
101 : m_pBody (rRef.get())
102 {
103 if (m_pBody)
104 m_pBody->acquire();
105 }
106#endif
107
108 /** Destructor...
109 */
110 ~Reference() COVERITY_NOEXCEPT_FALSE
111 {
112 if (m_pBody)
113 m_pBody->release();
114 }
115
116 /** Set...
117 Similar to assignment.
118 */
119 Reference<reference_type> &
120 SAL_CALL set (reference_type * pBody)
121 {
122 if (pBody)
123 pBody->acquire();
124 reference_type * const pOld = m_pBody;
125 m_pBody = pBody;
126 if (pOld)
127 pOld->release();
128 return *this;
129 }
130
131 /** Assignment.
132 Unbinds this instance from its body (if bound) and
133 bind it to the body represented by the handle.
134 */
135 Reference<reference_type> &
136 SAL_CALL operator= (const Reference<reference_type> & handle)
137 {
138 return set( handle.m_pBody );
139 }
140
141#ifdef LIBO_INTERNAL_ONLY1
142 /** Assignment.
143 * Unbinds this instance from its body (if bound),
144 * bind it to the body represented by the handle, and
145 * set the body represented by the handle to nullptr.
146 */
147 Reference<reference_type> &
148 operator= (Reference<reference_type> && handle)
149 {
150 // self-movement guts ourself
151 if (m_pBody)
152 m_pBody->release();
153 m_pBody = handle.m_pBody;
154 handle.m_pBody = nullptr;
155 return *this;
156 }
157#endif
158
159 /** Assignment...
160 */
161 Reference<reference_type> &
162 SAL_CALL operator= (reference_type * pBody)
163 {
164 return set( pBody );
165 }
166
167 /** Unbind the body from this handle.
168 Note that for a handle representing a large body,
169 "handle.clear().set(new body());" _might_
170 perform a little bit better than "handle.set(new body());",
171 since in the second case two large objects exist in memory
172 (the old body and the new body).
173 */
174 Reference<reference_type> & SAL_CALL clear()
175 {
176 if (m_pBody
8.1
Field 'm_pBody' is non-null
8.1
Field 'm_pBody' is non-null
8.1
Field 'm_pBody' is non-null
8.1
Field 'm_pBody' is non-null
)
9
←
Taking true branch
→
177 {
178 reference_type * const pOld = m_pBody;
179 m_pBody = NULL__null;
180 pOld->release();
10
←
Calling 'VclReferenceBase::release'
→
14
←
Returning; memory was released
→
181 }
182 return *this;
183 }
184
185
186 /** Get the body. Can be used instead of operator->().
187 I.e. handle->someBodyOp() and handle.get()->someBodyOp()
188 are the same.
189 */
190 reference_type * SAL_CALL get() const
191 {
192 return m_pBody;
17
←
Use of memory after it is freed
193 }
194
195
196 /** Probably most common used: handle->someBodyOp().
197 */
198 reference_type * SAL_CALL operator->() const
199 {
200 assert(m_pBody != NULL)(static_cast <bool> (m_pBody != __null) ? void (0) : __assert_fail
("m_pBody != NULL", "/home/maarten/src/libreoffice/core/include/rtl/ref.hxx"
, 200, __extension__ __PRETTY_FUNCTION__));
201 return m_pBody;
202 }
203
204
205 /** Allows (*handle).someBodyOp().
206 */
207 reference_type & SAL_CALL operator*() const
208 {
209 assert(m_pBody != NULL)(static_cast <bool> (m_pBody != __null) ? void (0) : __assert_fail
("m_pBody != NULL", "/home/maarten/src/libreoffice/core/include/rtl/ref.hxx"
, 209, __extension__ __PRETTY_FUNCTION__));
210 return *m_pBody;
211 }
212
213
214 /** Returns True if the handle does point to a valid body.
215 */
216 bool SAL_CALL is() const
217 {
218 return (m_pBody != NULL__null);
219 }
220
221#if defined LIBO_INTERNAL_ONLY1
222 /** Returns True if the handle does point to a valid body.
223 */
224 explicit operator bool() const
225 {
226 return is();
227 }
228#endif
229
230 /** Returns True if this points to pBody.
231 */
232 bool SAL_CALL operator== (const reference_type * pBody) const
233 {
234 return (m_pBody == pBody);
235 }
236
237
238 /** Returns True if handle points to the same body.
239 */
240 bool
241 SAL_CALL operator== (const Reference<reference_type> & handle) const
242 {
243 return (m_pBody == handle.m_pBody);
244 }
245
246
247 /** Needed to place References into STL collection.
248 */
249 bool
250 SAL_CALL operator!= (const Reference<reference_type> & handle) const
251 {
252 return (m_pBody != handle.m_pBody);
253 }
254
255
256 /** Needed to place References into STL collection.
257 */
258 bool
259 SAL_CALL operator< (const Reference<reference_type> & handle) const
260 {
261 return (m_pBody < handle.m_pBody);
262 }
263
264
265 /** Needed to place References into STL collection.
266 */
267 bool
268 SAL_CALL operator> (const Reference<reference_type> & handle) const
269 {
270 return (m_pBody > handle.m_pBody);
271 }
272};
273
274} // namespace rtl
275
276#if defined LIBO_INTERNAL_ONLY1
277namespace std
278{
279
280/// @cond INTERNAL
281/**
282 Make rtl::Reference hashable by default for use in STL containers.
283
284 @since LibreOffice 6.3
285*/
286template<typename T>
287struct hash<::rtl::Reference<T>>
288{
289 std::size_t operator()(::rtl::Reference<T> const & s) const
290 { return std::size_t(s.get()); }
291};
292/// @endcond
293
294}
295
296#endif
297
298#endif /* ! INCLUDED_RTL_REF_HXX */
299
300/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
←

/home/maarten/src/libreoffice/core/include/vcl/vclreferencebase.hxx

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#ifndef INCLUDED_VCL_Reference_HXX
20#define INCLUDED_VCL_Reference_HXX
21
22#include <vcl/dllapi.h>
23#include <osl/interlck.h>
24
25class VCL_DLLPUBLIC__attribute__ ((visibility("default"))) VclReferenceBase
26{
27 mutable oslInterlockedCount mnRefCnt;
28
29 template<typename T> friend class VclPtr;
30
31public:
32 void acquire() const
33 {
34 osl_atomic_increment(&mnRefCnt)__sync_add_and_fetch((&mnRefCnt), 1);
35 }
36
37 void release() const
38 {
39 if (osl_atomic_decrement(&mnRefCnt)__sync_sub_and_fetch((&mnRefCnt), 1) == 0)
11
←
Assuming the condition is true
→
12
←
Taking true branch
→
40 delete this;
13
←
Memory is released
→
41 }
42#ifdef DBG_UTIL
43#ifndef _WIN32
44 sal_Int32 getRefCount() const { return mnRefCnt; }
45#endif
46#endif
47
48
49private:
50 VclReferenceBase(const VclReferenceBase&) = delete;
51 VclReferenceBase& operator=(const VclReferenceBase&) = delete;
52
53 bool mbDisposed : 1;
54
55protected:
56 VclReferenceBase();
57protected:
58 virtual ~VclReferenceBase();
59
60protected:
61 virtual void dispose();
62
63public:
64 void disposeOnce();
65 bool isDisposed() const { return mbDisposed; }
66
67};
68#endif