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 graphctl.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 -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 SVX_DLLIMPLEMENTATION -D EXCEPTIONS_ON -D LIBO_INTERNAL_ONLY -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/boost/include -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/boost -I /home/maarten/src/libreoffice/core/svx/inc -I /home/maarten/src/libreoffice/core/svx/source/inc -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/UnoApiHeadersTarget/udkapi/normal -I /home/maarten/src/libreoffice/core/workdir/UnoApiHeadersTarget/offapi/normal -I /home/maarten/src/libreoffice/core/workdir/CustomTarget/officecfg/registry -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/svx/source/dialog/graphctl.cxx

/home/maarten/src/libreoffice/core/svx/source/dialog/graphctl.cxx

→
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 <svl/itempool.hxx>
21#include <vcl/settings.hxx>
22#include <vcl/ptrstyle.hxx>
23#include <vcl/svapp.hxx>
24
25#include <svx/graphctl.hxx>
26#include <svx/sdr/overlay/overlaymanager.hxx>
27#include <GraphCtlAccessibleContext.hxx>
28#include <svx/svxids.hrc>
29#include <svx/svdpage.hxx>
30#include <svx/sdrpaintwindow.hxx>
31
32void GraphCtrlUserCall::Changed( const SdrObject& rObj, SdrUserCallType eType, const tools::Rectangle& /*rOldBoundRect*/ )
33{
34 switch( eType )
35 {
36 case SdrUserCallType::MoveOnly:
37 case SdrUserCallType::Resize:
38 rWin.SdrObjChanged( rObj );
39 break;
40
41 case SdrUserCallType::Inserted:
42 rWin.SdrObjCreated( rObj );
43 break;
44
45 default:
46 break;
47 }
48 rWin.QueueIdleUpdate();
49}
50
51GraphCtrl::GraphCtrl(weld::Dialog* pDialog)
52 : aUpdateIdle("svx GraphCtrl Update")
53 , aMap100(MapUnit::Map100thMM)
54 , eObjKind(OBJ_NONE)
55 , nPolyEdit(0)
56 , bEditMode(false)
57 , mbSdrMode(false)
58 , mbInIdleUpdate(false)
59 , mpDialog(pDialog)
60{
61 pUserCall.reset(new GraphCtrlUserCall( *this ));
62 aUpdateIdle.SetPriority( TaskPriority::LOWEST );
63 aUpdateIdle.SetInvokeHandler( LINK( this, GraphCtrl, UpdateHdl )::tools::detail::makeLink( ::tools::detail::castTo<GraphCtrl
*>(this), &GraphCtrl::LinkStubUpdateHdl) );
64 aUpdateIdle.Start();
65}
66
67void GraphCtrl::SetDrawingArea(weld::DrawingArea* pDrawingArea)
68{
69 weld::CustomWidgetController::SetDrawingArea(pDrawingArea);
70 EnableRTL(false);
71}
72
73GraphCtrl::~GraphCtrl()
74{
75 aUpdateIdle.Stop();
76
77 if( mpAccContext.is() )
1
Taking false branch
→
78 {
79 mpAccContext->disposing();
80 mpAccContext.clear();
81 }
82 pView.reset();
83 pModel.reset();
84 pUserCall.reset();
85}
2
←
Calling implicit destructor for 'ScopedVclPtrInstance<VirtualDevice>'
→
3
←
Calling '~ScopedVclPtr'
→
86
87void GraphCtrl::SetSdrMode(bool bSdrMode)
88{
89 mbSdrMode = bSdrMode;
90
91 const StyleSettings& rStyleSettings = Application::GetSettings().GetStyleSettings();
92 OutputDevice& rDevice = GetDrawingArea()->get_ref_device();
93 rDevice.SetBackground( Wallpaper( rStyleSettings.GetWindowColor() ) );
94 xVD->SetBackground( Wallpaper( rStyleSettings.GetWindowColor() ) );
95 rDevice.SetMapMode( aMap100 );
96 xVD->SetMapMode( aMap100 );
97
98 pView.reset();
99 pModel.reset();
100
101 if ( mbSdrMode )
102 InitSdrModel();
103
104 QueueIdleUpdate();
105}
106
107void GraphCtrl::InitSdrModel()
108{
109 SolarMutexGuard aGuard;
110
111 SdrPage* pPage;
112
113 // destroy old junk
114 pView.reset();
115 pModel.reset();
116
117 // Creating a Model
118 pModel.reset(new SdrModel(nullptr, nullptr, true));
119 pModel->GetItemPool().FreezeIdRanges();
120 pModel->SetScaleUnit( aMap100.GetMapUnit() );
121 pModel->SetScaleFraction( Fraction( 1, 1 ) );
122 pModel->SetDefaultFontHeight( 500 );
123
124 pPage = new SdrPage( *pModel );
125
126 pPage->SetSize( aGraphSize );
127 pPage->SetBorder( 0, 0, 0, 0 );
128 pModel->InsertPage( pPage );
129 pModel->SetChanged( false );
130
131 // Creating a View
132 pView.reset(new GraphCtrlView(*pModel, this));
133 pView->SetWorkArea( tools::Rectangle( Point(), aGraphSize ) );
134 pView->EnableExtendedMouseEventDispatcher( true );
135 pView->ShowSdrPage(pView->GetModel()->GetPage(0));
136 pView->SetFrameDragSingles();
137 pView->SetMarkedPointsSmooth( SdrPathSmoothKind::Symmetric );
138 pView->SetEditMode();
139
140 // #i72889# set needed flags
141 pView->SetPagePaintingAllowed(false);
142 pView->SetBufferedOutputAllowed(true);
143 pView->SetBufferedOverlayAllowed(true);
144
145 // Tell the accessibility object about the changes.
146 if (mpAccContext.is())
147 mpAccContext->setModelAndView (pModel.get(), pView.get());
148}
149
150void GraphCtrl::SetGraphic( const Graphic& rGraphic, bool bNewModel )
151{
152 aGraphic = rGraphic;
153 xVD->SetOutputSizePixel(Size(0, 0)); //force redraw
154
155 if ( aGraphic.GetPrefMapMode().GetMapUnit() == MapUnit::MapPixel )
156 aGraphSize = Application::GetDefaultDevice()->PixelToLogic( aGraphic.GetPrefSize(), aMap100 );
157 else
158 aGraphSize = OutputDevice::LogicToLogic( aGraphic.GetPrefSize(), aGraphic.GetPrefMapMode(), aMap100 );
159
160 if ( mbSdrMode && bNewModel )
161 InitSdrModel();
162
163 aGraphSizeLink.Call( this );
164
165 Resize();
166
167 Invalidate();
168 QueueIdleUpdate();
169}
170
171void GraphCtrl::GraphicToVD()
172{
173 OutputDevice& rDevice = GetDrawingArea()->get_ref_device();
174 xVD->SetOutputSizePixel(GetOutputSizePixel());
175 xVD->SetBackground(rDevice.GetBackground());
176 xVD->Erase();
177 const bool bGraphicValid(GraphicType::NONE != aGraphic.GetType());
178 if (bGraphicValid)
179 aGraphic.Draw(xVD.get(), Point(), aGraphSize);
180}
181
182void GraphCtrl::Resize()
183{
184 weld::CustomWidgetController::Resize();
185
186 if (aGraphSize.Width() && aGraphSize.Height())
187 {
188 MapMode aDisplayMap( aMap100 );
189 Point aNewPos;
190 Size aNewSize;
191 OutputDevice& rDevice = GetDrawingArea()->get_ref_device();
192 const Size aWinSize = rDevice.PixelToLogic( GetOutputSizePixel(), aDisplayMap );
193 const long nWidth = aWinSize.Width();
194 const long nHeight = aWinSize.Height();
195 double fGrfWH = static_cast<double>(aGraphSize.Width()) / aGraphSize.Height();
196 double fWinWH = static_cast<double>(nWidth) / nHeight;
197
198 // Adapt Bitmap to Thumb size
199 if ( fGrfWH < fWinWH)
200 {
201 aNewSize.setWidth( static_cast<long>( static_cast<double>(nHeight) * fGrfWH ) );
202 aNewSize.setHeight( nHeight );
203 }
204 else
205 {
206 aNewSize.setWidth( nWidth );
207 aNewSize.setHeight( static_cast<long>( static_cast<double>(nWidth) / fGrfWH ) );
208 }
209
210 aNewPos.setX( ( nWidth - aNewSize.Width() ) >> 1 );
211 aNewPos.setY( ( nHeight - aNewSize.Height() ) >> 1 );
212
213 // Implementing MapMode for Engine
214 aDisplayMap.SetScaleX( Fraction( aNewSize.Width(), aGraphSize.Width() ) );
215 aDisplayMap.SetScaleY( Fraction( aNewSize.Height(), aGraphSize.Height() ) );
216
217 aDisplayMap.SetOrigin( OutputDevice::LogicToLogic( aNewPos, aMap100, aDisplayMap ) );
218 rDevice.SetMapMode( aDisplayMap );
219 xVD->SetMapMode( aDisplayMap );
220 }
221
222 Invalidate();
223}
224
225void GraphCtrl::Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect)
226{
227 // #i72889# used split repaint to be able to paint an own background
228 // even to the buffered view
229 const bool bGraphicValid(GraphicType::NONE != aGraphic.GetType());
230
231 if (GetOutputSizePixel() != xVD->GetOutputSizePixel())
232 GraphicToVD();
233
234 if (mbSdrMode)
235 {
236 SdrPaintWindow* pPaintWindow = pView->BeginCompleteRedraw(&rRenderContext);
237 pPaintWindow->SetOutputToWindow(true);
238
239 if (bGraphicValid)
240 {
241 vcl::RenderContext& rTarget = pPaintWindow->GetTargetOutputDevice();
242
243 OutputDevice& rDevice = GetDrawingArea()->get_ref_device();
244 rTarget.SetBackground(rDevice.GetBackground());
245 rTarget.Erase();
246
247 rTarget.DrawOutDev(Point(), xVD->GetOutputSize(), Point(), xVD->GetOutputSize(), *xVD);
248 }
249
250 const vcl::Region aRepaintRegion(rRect);
251 pView->DoCompleteRedraw(*pPaintWindow, aRepaintRegion);
252 pView->EndCompleteRedraw(*pPaintWindow, true);
253 }
254 else
255 {
256 // #i73381# in non-SdrMode, paint to local directly
257 rRenderContext.DrawOutDev(rRect.TopLeft(), rRect.GetSize(),
258 rRect.TopLeft(), rRect.GetSize(),
259 *xVD);
260 }
261}
262
263void GraphCtrl::SdrObjChanged( const SdrObject& )
264{
265 QueueIdleUpdate();
266}
267
268void GraphCtrl::SdrObjCreated( const SdrObject& )
269{
270 QueueIdleUpdate();
271}
272
273void GraphCtrl::MarkListHasChanged()
274{
275 QueueIdleUpdate();
276}
277
278bool GraphCtrl::KeyInput( const KeyEvent& rKEvt )
279{
280 vcl::KeyCode aCode( rKEvt.GetKeyCode() );
281 bool bProc = false;
282
283 OutputDevice& rDevice = GetDrawingArea()->get_ref_device();
284
285 switch ( aCode.GetCode() )
286 {
287 case KEY_DELETE:
288 case KEY_BACKSPACE:
289 {
290 if ( mbSdrMode )
291 {
292 pView->DeleteMarked();
293 bProc = true;
294 }
295 }
296 break;
297
298 case KEY_ESCAPE:
299 {
300 if ( mbSdrMode )
301 {
302 if ( pView->IsAction() )
303 {
304 pView->BrkAction();
305 bProc = true;
306 }
307 else if ( pView->AreObjectsMarked() )
308 {
309 pView->UnmarkAllObj();
310 bProc = true;
311 }
312 }
313 }
314 break;
315
316 case KEY_F11:
317 case KEY_TAB:
318 {
319 if( mbSdrMode )
320 {
321 if( !aCode.IsMod1() && !aCode.IsMod2() )
322 {
323 bool bForward = !aCode.IsShift();
324 // select next object
325 if ( ! pView->MarkNextObj( bForward ))
326 {
327 // At first or last object. Cycle to the other end
328 // of the list.
329 pView->UnmarkAllObj();
330 pView->MarkNextObj (bForward);
331 }
332 bProc = true;
333 }
334 else if(aCode.IsMod1())
335 {
336 // select next handle
337 const SdrHdlList& rHdlList = pView->GetHdlList();
338 bool bForward(!aCode.IsShift());
339
340 const_cast<SdrHdlList&>(rHdlList).TravelFocusHdl(bForward);
341
342 bProc = true;
343 }
344 }
345 }
346 break;
347
348 case KEY_END:
349 {
350
351 if ( aCode.IsMod1() )
352 {
353 // mark last object
354 pView->UnmarkAllObj();
355 pView->MarkNextObj();
356
357 bProc = true;
358 }
359 }
360 break;
361
362 case KEY_HOME:
363 {
364 if ( aCode.IsMod1() )
365 {
366 pView->UnmarkAllObj();
367 pView->MarkNextObj(true);
368
369 bProc = true;
370 }
371 }
372 break;
373
374 case KEY_UP:
375 case KEY_DOWN:
376 case KEY_LEFT:
377 case KEY_RIGHT:
378 {
379 long nX = 0;
380 long nY = 0;
381
382 if (aCode.GetCode() == KEY_UP)
383 {
384 // Scroll up
385 nX = 0;
386 nY =-1;
387 }
388 else if (aCode.GetCode() == KEY_DOWN)
389 {
390 // Scroll down
391 nX = 0;
392 nY = 1;
393 }
394 else if (aCode.GetCode() == KEY_LEFT)
395 {
396 // Scroll left
397 nX =-1;
398 nY = 0;
399 }
400 else if (aCode.GetCode() == KEY_RIGHT)
401 {
402 // Scroll right
403 nX = 1;
404 nY = 0;
405 }
406
407 if (pView->AreObjectsMarked() && !aCode.IsMod1() )
408 {
409 if(aCode.IsMod2())
410 {
411 // move in 1 pixel distance
412 Size aLogicSizeOnePixel = rDevice.PixelToLogic(Size(1,1));
413 nX *= aLogicSizeOnePixel.Width();
414 nY *= aLogicSizeOnePixel.Height();
415 }
416 else
417 {
418 // old, fixed move distance
419 nX *= 100;
420 nY *= 100;
421 }
422
423 // II
424 const SdrHdlList& rHdlList = pView->GetHdlList();
425 SdrHdl* pHdl = rHdlList.GetFocusHdl();
426
427 if(nullptr == pHdl)
428 {
429 // restrict movement to WorkArea
430 const tools::Rectangle& rWorkArea = pView->GetWorkArea();
431
432 if(!rWorkArea.IsEmpty())
433 {
434 tools::Rectangle aMarkRect(pView->GetMarkedObjRect());
435 aMarkRect.Move(nX, nY);
436
437 if(!aMarkRect.IsInside(rWorkArea))
438 {
439 if(aMarkRect.Left() < rWorkArea.Left())
440 {
441 nX += rWorkArea.Left() - aMarkRect.Left();
442 }
443
444 if(aMarkRect.Right() > rWorkArea.Right())
445 {
446 nX -= aMarkRect.Right() - rWorkArea.Right();
447 }
448
449 if(aMarkRect.Top() < rWorkArea.Top())
450 {
451 nY += rWorkArea.Top() - aMarkRect.Top();
452 }
453
454 if(aMarkRect.Bottom() > rWorkArea.Bottom())
455 {
456 nY -= aMarkRect.Bottom() - rWorkArea.Bottom();
457 }
458 }
459 }
460
461 // no handle selected
462 if(0 != nX || 0 != nY)
463 {
464 pView->MoveAllMarked(Size(nX, nY));
465 }
466 }
467 else
468 {
469 // move handle with index nHandleIndex
470 if (nX || nY)
471 {
472 // now move the Handle (nX, nY)
473 Point aStartPoint(pHdl->GetPos());
474 Point aEndPoint(pHdl->GetPos() + Point(nX, nY));
475 const SdrDragStat& rDragStat = pView->GetDragStat();
476
477 // start dragging
478 pView->BegDragObj(aStartPoint, nullptr, pHdl, 0);
479
480 if(pView->IsDragObj())
481 {
482 bool bWasNoSnap = rDragStat.IsNoSnap();
483 bool bWasSnapEnabled = pView->IsSnapEnabled();
484
485 // switch snapping off
486 if(!bWasNoSnap)
487 const_cast<SdrDragStat&>(rDragStat).SetNoSnap();
488 if(bWasSnapEnabled)
489 pView->SetSnapEnabled(false);
490
491 pView->MovAction(aEndPoint);
492 pView->EndDragObj();
493
494 // restore snap
495 if(!bWasNoSnap)
496 const_cast<SdrDragStat&>(rDragStat).SetNoSnap(bWasNoSnap);
497 if(bWasSnapEnabled)
498 pView->SetSnapEnabled(bWasSnapEnabled);
499 }
500 }
501 }
502
503 bProc = true;
504 }
505 }
506 break;
507
508 case KEY_SPACE:
509 {
510 const SdrHdlList& rHdlList = pView->GetHdlList();
511 SdrHdl* pHdl = rHdlList.GetFocusHdl();
512
513 if(pHdl)
514 {
515 if(pHdl->GetKind() == SdrHdlKind::Poly)
516 {
517 // rescue ID of point with focus
518 sal_uInt32 nPol(pHdl->GetPolyNum());
519 sal_uInt32 nPnt(pHdl->GetPointNum());
520
521 if(pView->IsPointMarked(*pHdl))
522 {
523 if(rKEvt.GetKeyCode().IsShift())
524 {
525 pView->UnmarkPoint(*pHdl);
526 }
527 }
528 else
529 {
530 if(!rKEvt.GetKeyCode().IsShift())
531 {
532 pView->UnmarkAllPoints();
533 }
534
535 pView->MarkPoint(*pHdl);
536 }
537
538 if(nullptr == rHdlList.GetFocusHdl())
539 {
540 // restore point with focus
541 SdrHdl* pNewOne = nullptr;
542
543 for(size_t a = 0; !pNewOne && a < rHdlList.GetHdlCount(); ++a)
544 {
545 SdrHdl* pAct = rHdlList.GetHdl(a);
546
547 if(pAct
548 && pAct->GetKind() == SdrHdlKind::Poly
549 && pAct->GetPolyNum() == nPol
550 && pAct->GetPointNum() == nPnt)
551 {
552 pNewOne = pAct;
553 }
554 }
555
556 if(pNewOne)
557 {
558 const_cast<SdrHdlList&>(rHdlList).SetFocusHdl(pNewOne);
559 }
560 }
561
562 bProc = true;
563 }
564 }
565 }
566 break;
567
568 default:
569 break;
570 }
571
572 if (bProc)
573 ReleaseMouse();
574
575 QueueIdleUpdate();
576
577 return bProc;
578}
579
580bool GraphCtrl::MouseButtonDown( const MouseEvent& rMEvt )
581{
582 if ( mbSdrMode && ( rMEvt.GetClicks() < 2 ) )
583 {
584 OutputDevice& rDevice = GetDrawingArea()->get_ref_device();
585
586 const Point aLogPt( rDevice.PixelToLogic( rMEvt.GetPosPixel() ) );
587
588 if ( !tools::Rectangle( Point(), aGraphSize ).IsInside( aLogPt ) && !pView->IsEditMode() )
589 weld::CustomWidgetController::MouseButtonDown( rMEvt );
590 else
591 {
592 // Get Focus for key inputs
593 GrabFocus();
594
595 if ( nPolyEdit )
596 {
597 SdrViewEvent aVEvt;
598 SdrHitKind eHit = pView->PickAnything( rMEvt, SdrMouseEventKind::BUTTONDOWN, aVEvt );
599
600 if ( nPolyEdit == SID_BEZIER_INSERT( 10000 + 119 ) && eHit == SdrHitKind::MarkedObject )
601 pView->BegInsObjPoint( aLogPt, rMEvt.IsMod1());
602 else
603 pView->MouseButtonDown( rMEvt, &rDevice );
604 }
605 else
606 pView->MouseButtonDown( rMEvt, &rDevice );
607 }
608
609 SdrObject* pCreateObj = pView->GetCreateObj();
610
611 // We want to realize the insert
612 if ( pCreateObj && !pCreateObj->GetUserCall() )
613 pCreateObj->SetUserCall( pUserCall.get() );
614
615 SetPointer( pView->GetPreferredPointer( aLogPt, &rDevice ) );
616 }
617 else
618 weld::CustomWidgetController::MouseButtonDown( rMEvt );
619
620 QueueIdleUpdate();
621
622 return false;
623}
624
625bool GraphCtrl::MouseMove(const MouseEvent& rMEvt)
626{
627 OutputDevice& rDevice = GetDrawingArea()->get_ref_device();
628 const Point aLogPos( rDevice.PixelToLogic( rMEvt.GetPosPixel() ) );
629
630 if ( mbSdrMode )
631 {
632 pView->MouseMove( rMEvt, &rDevice );
633
634 if( ( SID_BEZIER_INSERT( 10000 + 119 ) == nPolyEdit ) &&
635 !pView->PickHandle( aLogPos ) &&
636 !pView->IsInsObjPoint() )
637 {
638 SetPointer( PointerStyle::Cross );
639 }
640 else
641 SetPointer( pView->GetPreferredPointer( aLogPos, &rDevice ) );
642 }
643 else
644 weld::CustomWidgetController::MouseButtonUp( rMEvt );
645
646 if ( aMousePosLink.IsSet() )
647 {
648 if ( tools::Rectangle( Point(), aGraphSize ).IsInside( aLogPos ) )
649 aMousePos = aLogPos;
650 else
651 aMousePos = Point();
652
653 aMousePosLink.Call( this );
654 }
655
656 QueueIdleUpdate();
657
658 return false;
659}
660
661bool GraphCtrl::MouseButtonUp(const MouseEvent& rMEvt)
662{
663 if ( mbSdrMode )
664 {
665 OutputDevice& rDevice = GetDrawingArea()->get_ref_device();
666
667 if ( pView->IsInsObjPoint() )
668 pView->EndInsObjPoint( SdrCreateCmd::ForceEnd );
669 else
670 pView->MouseButtonUp( rMEvt, &rDevice );
671
672 ReleaseMouse();
673 SetPointer( pView->GetPreferredPointer( rDevice.PixelToLogic( rMEvt.GetPosPixel() ), &rDevice ) );
674 }
675 else
676 weld::CustomWidgetController::MouseButtonUp( rMEvt );
677
678 QueueIdleUpdate();
679
680 return false;
681}
682
683SdrObject* GraphCtrl::GetSelectedSdrObject() const
684{
685 SdrObject* pSdrObj = nullptr;
686
687 if ( mbSdrMode )
688 {
689 const SdrMarkList& rMarkList = pView->GetMarkedObjectList();
690
691 if ( rMarkList.GetMarkCount() == 1 )
692 pSdrObj = rMarkList.GetMark( 0 )->GetMarkedSdrObj();
693 }
694
695 return pSdrObj;
696}
697
698void GraphCtrl::SetEditMode( const bool _bEditMode )
699{
700 if ( mbSdrMode )
701 {
702 bEditMode = _bEditMode;
703 pView->SetEditMode( bEditMode );
704 eObjKind = OBJ_NONE;
705 pView->SetCurrentObj( sal::static_int_cast< sal_uInt16 >( eObjKind ) );
706 }
707 else
708 bEditMode = false;
709
710 QueueIdleUpdate();
711}
712
713void GraphCtrl::SetPolyEditMode( const sal_uInt16 _nPolyEdit )
714{
715 if ( mbSdrMode && ( _nPolyEdit != nPolyEdit ) )
716 {
717 nPolyEdit = _nPolyEdit;
718 pView->SetFrameDragSingles( nPolyEdit == 0 );
719 }
720 else
721 nPolyEdit = 0;
722
723 QueueIdleUpdate();
724}
725
726void GraphCtrl::SetObjKind( const SdrObjKind _eObjKind )
727{
728 if ( mbSdrMode )
729 {
730 bEditMode = false;
731 pView->SetEditMode( bEditMode );
732 eObjKind = _eObjKind;
733 pView->SetCurrentObj( sal::static_int_cast< sal_uInt16 >( eObjKind ) );
734 }
735 else
736 eObjKind = OBJ_NONE;
737
738 QueueIdleUpdate();
739}
740
741IMPL_LINK_NOARG(GraphCtrl, UpdateHdl, Timer *, void)void GraphCtrl::LinkStubUpdateHdl(void * instance, Timer * data
) { return static_cast<GraphCtrl *>(instance)->UpdateHdl
(data); } void GraphCtrl::UpdateHdl(__attribute__ ((unused)) Timer
*)
742{
743 mbInIdleUpdate = true;
744 aUpdateLink.Call( this );
745 mbInIdleUpdate = false;
746}
747
748void GraphCtrl::QueueIdleUpdate()
749{
750 if (!mbInIdleUpdate)
751 aUpdateIdle.Start();
752}
753
754namespace
755{
756 class WeldOverlayManager final : public sdr::overlay::OverlayManager
757 {
758 weld::CustomWidgetController& m_rGraphCtrl;
759
760 public:
761 WeldOverlayManager(weld::CustomWidgetController& rGraphCtrl, OutputDevice& rDevice)
762 : OverlayManager(rDevice)
763 , m_rGraphCtrl(rGraphCtrl)
764 {
765 }
766
767 // invalidate the given range at local OutputDevice
768 virtual void invalidateRange(const basegfx::B2DRange& rRange) override
769 {
770 tools::Rectangle aInvalidateRectangle(RangeToInvalidateRectangle(rRange));
771 m_rGraphCtrl.Invalidate(aInvalidateRectangle);
772 }
773 };
774}
775
776rtl::Reference<sdr::overlay::OverlayManager> GraphCtrlView::CreateOverlayManager(OutputDevice& rDevice) const
777{
778 assert(&rDevice == &rGraphCtrl.GetDrawingArea()->get_ref_device())(static_cast <bool> (&rDevice == &rGraphCtrl.GetDrawingArea
()->get_ref_device()) ? void (0) : __assert_fail ("&rDevice == &rGraphCtrl.GetDrawingArea()->get_ref_device()"
, "/home/maarten/src/libreoffice/core/svx/source/dialog/graphctl.cxx"
, 778, __extension__ __PRETTY_FUNCTION__));
779 if (rDevice.GetOutDevType() == OUTDEV_VIRDEV)
780 {
781 rtl::Reference<sdr::overlay::OverlayManager> xOverlayManager(new WeldOverlayManager(rGraphCtrl, rDevice));
782 InitOverlayManager(xOverlayManager);
783 return xOverlayManager;
784 }
785 return SdrView::CreateOverlayManager(rDevice);
786}
787
788void GraphCtrlView::InvalidateOneWin(OutputDevice& rDevice)
789{
790 assert(&rDevice == &rGraphCtrl.GetDrawingArea()->get_ref_device())(static_cast <bool> (&rDevice == &rGraphCtrl.GetDrawingArea
()->get_ref_device()) ? void (0) : __assert_fail ("&rDevice == &rGraphCtrl.GetDrawingArea()->get_ref_device()"
, "/home/maarten/src/libreoffice/core/svx/source/dialog/graphctl.cxx"
, 790, __extension__ __PRETTY_FUNCTION__));
791 if (rDevice.GetOutDevType() == OUTDEV_VIRDEV)
792 {
793 rGraphCtrl.Invalidate();
794 return;
795 }
796 SdrView::InvalidateOneWin(rDevice);
797}
798
799void GraphCtrlView::InvalidateOneWin(OutputDevice& rDevice, const tools::Rectangle& rArea)
800{
801 assert(&rDevice == &rGraphCtrl.GetDrawingArea()->get_ref_device())(static_cast <bool> (&rDevice == &rGraphCtrl.GetDrawingArea
()->get_ref_device()) ? void (0) : __assert_fail ("&rDevice == &rGraphCtrl.GetDrawingArea()->get_ref_device()"
, "/home/maarten/src/libreoffice/core/svx/source/dialog/graphctl.cxx"
, 801, __extension__ __PRETTY_FUNCTION__));
802 if (rDevice.GetOutDevType() == OUTDEV_VIRDEV)
803 {
804 rGraphCtrl.Invalidate(rArea);
805 return;
806 }
807 SdrView::InvalidateOneWin(rDevice, rArea);
808}
809
810GraphCtrlView::~GraphCtrlView()
811{
812 // turn SetOutputToWindow back off again before
813 // turning back into our baseclass during dtoring
814 const sal_uInt32 nWindowCount(PaintWindowCount());
815 for (sal_uInt32 nWinNum(0); nWinNum < nWindowCount; nWinNum++)
816 {
817 SdrPaintWindow* pPaintWindow = GetPaintWindow(nWinNum);
818 pPaintWindow->SetOutputToWindow(false);
819 }
820}
821
822Point GraphCtrl::GetPositionInDialog() const
823{
824 int x, y, width, height;
825 if (GetDrawingArea()->get_extents_relative_to(*mpDialog, x, y, width, height))
826 return Point(x, y);
827 return Point();
828}
829
830css::uno::Reference< css::accessibility::XAccessible > GraphCtrl::CreateAccessible()
831{
832 if(mpAccContext == nullptr )
833 {
834 // Disable accessibility if no model/view data available
835 if (pView && pModel)
836 mpAccContext = new SvxGraphCtrlAccessibleContext(*this);
837 }
838 return mpAccContext.get();
839}
840
841/* 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);
5
←
Calling copy constructor for 'Reference<VirtualDevice>'
→
8
←
Returning from copy constructor for 'Reference<VirtualDevice>'
→
204 m_rInnerRef.clear(); // we should use some 'swap' method ideally ;-)
9
←
Calling 'Reference::clear'
→
16
←
Returning; memory was released
→
205 if (aTmp.get()) {
17
←
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();
4
←
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)
6
←
Assuming field 'm_pBody' is non-null
→
7
←
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
9.1
Field 'm_pBody' is non-null
9.1
Field 'm_pBody' is non-null
9.1
Field 'm_pBody' is non-null
9.1
Field 'm_pBody' is non-null
)
10
←
Taking true branch
→
177 {
178 reference_type * const pOld = m_pBody;
179 m_pBody = NULL__null;
180 pOld->release();
11
←
Calling 'VclReferenceBase::release'
→
15
←
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;
18
←
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)
12
←
Assuming the condition is true
→
13
←
Taking true branch
→
40 delete this;
14
←
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