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

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 edit.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 SM_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/starmath/inc -I /home/maarten/src/libreoffice/core/workdir/SdiTarget/starmath/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/CustomTarget/oox/generated -I /home/maarten/src/libreoffice/core/workdir/UnoApiHeadersTarget/udkapi/normal -I /home/maarten/src/libreoffice/core/workdir/UnoApiHeadersTarget/offapi/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/starmath/source/edit.cxx

/home/maarten/src/libreoffice/core/starmath/source/edit.cxx

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1/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
*   Licensed to the Apache Software Foundation (ASF) under one or more
*   contributor license agreements. See the NOTICE file distributed
*   with this work for additional information regarding copyright
*   ownership. The ASF licenses this file to you under the Apache
*   License, Version 2.0 (the "License"); you may not use this file
*   except in compliance with the License. You may obtain a copy of
*   the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/

20#include <starmath.hrc>
21#include <helpids.h>

23#include <vcl/commandevent.hxx>
24#include <vcl/event.hxx>
25#include <vcl/scrbar.hxx>
26#include <vcl/settings.hxx>

28#include <editeng/editview.hxx>
29#include <editeng/editeng.hxx>
30#include <sfx2/dispatch.hxx>
31#include <sfx2/sfxsids.hrc>
32#include <svl/stritem.hxx>
33#include <sfx2/viewfrm.hxx>
34#include <svx/AccessibleTextHelper.hxx>
35#include <svtools/colorcfg.hxx>
36#include <osl/diagnose.h>

38#include <edit.hxx>
39#include <smmod.hxx>
40#include <view.hxx>
41#include <document.hxx>
42#include "cfgitem.hxx"
43#include "accessibility.hxx"
44#include <memory>

46#define SCROLL_LINE24         24


49using namespace com::sun::star::accessibility;
50using namespace com::sun::star;


53void SmGetLeftSelectionPart(const ESelection &rSel,
                          sal_Int32 &nPara, sal_uInt16 &nPos)
  // returns paragraph number and position of the selections left part
56{
  // compare start and end of selection and use the one that comes first
  if (    rSel.nStartPara <  rSel.nEndPara
      ||  (rSel.nStartPara == rSel.nEndPara  &&  rSel.nStartPos < rSel.nEndPos) )
  {   nPara = rSel.nStartPara;
      nPos  = rSel.nStartPos;
  }
  else
  {   nPara = rSel.nEndPara;
      nPos  = rSel.nEndPos;
  }
67}

69bool SmEditWindow::IsInlineEditEnabled()
70{
  SmViewShell *pView = GetView();
  return pView && pView->IsInlineEditEnabled();
73}


76SmEditWindow::SmEditWindow( SmCmdBoxWindow &rMyCmdBoxWin ) :
  Window              (&rMyCmdBoxWin, WB_BORDER),
  DropTargetHelper    ( this ),
  rCmdBox             (rMyCmdBoxWin),
  aModifyIdle         ("SmEditWindow ModifyIdle"),
  aCursorMoveIdle     ("SmEditWindow CursorMoveIdle")
82{
  set_id("math_edit");
  SetHelpId(HID_SMA_COMMAND_WIN_EDIT"STARMATH_HID_SMA_COMMAND_WIN_EDIT");
  SetMapMode(MapMode(MapUnit::MapPixel));

  // Even RTL languages don't use RTL for math
  EnableRTL( false );

  // compare DataChanged
  SetBackground( GetSettings().GetStyleSettings().GetWindowColor() );

  aModifyIdle.SetInvokeHandler(LINK(this, SmEditWindow, ModifyTimerHdl)::tools::detail::makeLink( ::tools::detail::castTo<SmEditWindow
 *>(this), &SmEditWindow::LinkStubModifyTimerHdl));
  aModifyIdle.SetPriority(TaskPriority::LOWEST);

  if (!IsInlineEditEnabled())
  {
      aCursorMoveIdle.SetInvokeHandler(LINK(this, SmEditWindow, CursorMoveTimerHdl)::tools::detail::makeLink( ::tools::detail::castTo<SmEditWindow
 *>(this), &SmEditWindow::LinkStubCursorMoveTimerHdl));
      aCursorMoveIdle.SetPriority(TaskPriority::LOWEST);
  }

  // if not called explicitly the this edit window within the
  // command window will just show an empty gray panel.
  Show();
105}


108SmEditWindow::~SmEditWindow()
109{
  disposeOnce();
111}

113void SmEditWindow::dispose()
114{
  aModifyIdle.Stop();

  StartCursorMove();

  // clean up of classes used for accessibility
  // must be done before EditView (and thus EditEngine) is no longer
  // available for those classes.
  if (mxAccessible.is())
1
Taking false branch→
  {
      mxAccessible->ClearWin();    // make Accessible nonfunctional
      mxAccessible.clear();
  }

  if (pEditView)
2
←
Taking false branch→
  {
      EditEngine *pEditEngine = pEditView->GetEditEngine();
      if (pEditEngine)
      {
          pEditEngine->SetStatusEventHdl( Link<EditStatus&,void>() );
          pEditEngine->RemoveView( pEditView.get() );
      }
      pEditView.reset();
  }

  pHScrollBar.disposeAndClear();
  pVScrollBar.disposeAndClear();
  pScrollBox.disposeAndClear();
3
←
Calling 'VclPtr::disposeAndClear'→

  DropTargetHelper::dispose();
  vcl::Window::dispose();
145}

147void SmEditWindow::StartCursorMove()
148{
  if (!IsInlineEditEnabled())
      aCursorMoveIdle.Stop();
151}

153void SmEditWindow::InvalidateSlots()
154{
  SfxBindings& rBind = GetView()->GetViewFrame()->GetBindings();
  rBind.Invalidate(SID_COPY(5000 + 711));
  rBind.Invalidate(SID_CUT(5000 + 710));
  rBind.Invalidate(SID_DELETE(5000 + 713));
159}

161SmViewShell * SmEditWindow::GetView()
162{
  return rCmdBox.GetView();
164}


167SmDocShell * SmEditWindow::GetDoc()
168{
  SmViewShell *pView = rCmdBox.GetView();
  return pView ? pView->GetDoc() : nullptr;
171}

173EditView * SmEditWindow::GetEditView()
174{
  return pEditView.get();
176}

178EditEngine * SmEditWindow::GetEditEngine()
179{
  EditEngine *pEditEng = nullptr;
  if (pEditView)
      pEditEng = pEditView->GetEditEngine();
  else
  {
      SmDocShell *pDoc = GetDoc();
      if (pDoc)
          pEditEng = &pDoc->GetEditEngine();
  }
  return pEditEng;
190}

192void SmEditWindow::ApplySettings(vcl::RenderContext& rRenderContext)
193{
  const StyleSettings& rStyleSettings = GetSettings().GetStyleSettings();
  rRenderContext.SetBackground(rStyleSettings.GetWindowColor());
196}

198void SmEditWindow::DataChanged( const DataChangedEvent& rDCEvt )
199{
  Window::DataChanged( rDCEvt );

  if (!((rDCEvt.GetType() == DataChangedEventType::FONTS) ||
        (rDCEvt.GetType() == DataChangedEventType::FONTSUBSTITUTION) ||
        ((rDCEvt.GetType() == DataChangedEventType::SETTINGS) &&
         (rDCEvt.GetFlags() & AllSettingsFlags::STYLE))))
      return;

  EditEngine *pEditEngine = GetEditEngine();
  SmDocShell *pDoc = GetDoc();

  if (pEditEngine && pDoc)
  {
      //!
      //! see also SmDocShell::GetEditEngine() !
      //!
      const StyleSettings& rStyleSettings = GetSettings().GetStyleSettings();

      pDoc->UpdateEditEngineDefaultFonts(rStyleSettings.GetFieldTextColor());
      pEditEngine->SetBackgroundColor(rStyleSettings.GetFieldColor());
      pEditEngine->SetDefTab(sal_uInt16(GetTextWidth("XXXX")));

      // forces new settings to be used
      // unfortunately this resets the whole edit engine
      // thus we need to save at least the text
      OUString aTxt( pEditEngine->GetText() );
      pEditEngine->Clear();   //incorrect font size
      pEditEngine->SetText( aTxt );

      AdjustScrollBars();
      Resize();
  }

  Invalidate();
234}

236IMPL_LINK_NOARG( SmEditWindow, ModifyTimerHdl, Timer *, void )void SmEditWindow::LinkStubModifyTimerHdl(void * instance, Timer
 * data) { return static_cast<SmEditWindow *>(instance)
->ModifyTimerHdl(data); } void SmEditWindow::ModifyTimerHdl
(__attribute__ ((unused)) Timer *)
237{
  UpdateStatus(false);
  aModifyIdle.Stop();
240}

242IMPL_LINK_NOARG(SmEditWindow, CursorMoveTimerHdl, Timer *, void)void SmEditWindow::LinkStubCursorMoveTimerHdl(void * instance
, Timer * data) { return static_cast<SmEditWindow *>(instance
)->CursorMoveTimerHdl(data); } void SmEditWindow::CursorMoveTimerHdl
(__attribute__ ((unused)) Timer *)
  // every once in a while check cursor position (selection) of edit
  // window and if it has changed (try to) set the formula-cursor
  // according to that.
246{
  if (IsInlineEditEnabled())
      return;

  ESelection aNewSelection(GetSelection());

  if (aNewSelection != aOldSelection)
  {
      SmViewShell *pView = rCmdBox.GetView();
      if (pView)
      {
          // get row and column to look for
          sal_Int32  nRow;
          sal_uInt16 nCol;
          SmGetLeftSelectionPart(aNewSelection, nRow, nCol);
          nRow++;
          nCol++;
          pView->GetGraphicWindow().SetCursorPos(static_cast<sal_uInt16>(nRow), nCol);
          aOldSelection = aNewSelection;
      }
  }
  aCursorMoveIdle.Stop();
268}

270void SmEditWindow::Resize()
271{
  if (!pEditView)
      CreateEditView();

  if (pEditView)
  {
      pEditView->SetOutputArea(AdjustScrollBars());
      pEditView->ShowCursor();

      OSL_ENSURE( pEditView->GetEditEngine(), "EditEngine missing" )do { if (true && (!(pEditView->GetEditEngine()))) {
 sal_detail_logFormat((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"
), ("/home/maarten/src/libreoffice/core/starmath/source/edit.cxx"
 ":" "280" ": "), "%s", "EditEngine missing"); } } while (false
);
      const long nMaxVisAreaStart = pEditView->GetEditEngine()->GetTextHeight() -
                                    pEditView->GetOutputArea().GetHeight();
      if (pEditView->GetVisArea().Top() > nMaxVisAreaStart)
      {
          tools::Rectangle aVisArea(pEditView->GetVisArea() );
          aVisArea.SetTop( std::max<long>(nMaxVisAreaStart, 0) );
          aVisArea.SetSize(pEditView->GetOutputArea().GetSize());
          pEditView->SetVisArea(aVisArea);
          pEditView->ShowCursor();
      }
      InitScrollBars();
  }
  Invalidate();
294}

296void SmEditWindow::MouseButtonUp(const MouseEvent &rEvt)
297{
  if (pEditView)
      pEditView->MouseButtonUp(rEvt);
  else
      Window::MouseButtonUp (rEvt);

  if (!IsInlineEditEnabled())
      CursorMoveTimerHdl(&aCursorMoveIdle);
  InvalidateSlots();
306}

308void SmEditWindow::MouseButtonDown(const MouseEvent &rEvt)
309{
  if (pEditView)
      pEditView->MouseButtonDown(rEvt);
  else
      Window::MouseButtonDown (rEvt);

  GrabFocus();
316}

318void SmEditWindow::Command(const CommandEvent& rCEvt)
319{
  //pass alt press/release to parent impl
  if (rCEvt.GetCommand() == CommandEventId::ModKeyChange)
  {
      Window::Command(rCEvt);
      return;
  }

  bool bForwardEvt = true;
  if (rCEvt.GetCommand() == CommandEventId::ContextMenu)
  {
      GetParent()->ToTop();

      Point aPoint = rCEvt.GetMousePosPixel();
      SmViewShell* pViewSh = rCmdBox.GetView();
      if (pViewSh)
          pViewSh->GetViewFrame()->GetDispatcher()->ExecutePopup("edit", this, &aPoint);
      bForwardEvt = false;
  }
  else if (rCEvt.GetCommand() == CommandEventId::Wheel)
      bForwardEvt = !HandleWheelCommands( rCEvt );

  if (bForwardEvt)
  {
      if (pEditView)
          pEditView->Command( rCEvt );
      else
          Window::Command (rCEvt);
  }
348}

350bool SmEditWindow::HandleWheelCommands( const CommandEvent &rCEvt )
351{
  bool bCommandHandled = false;    // true if the CommandEvent needs not
                                  // to be passed on (because it has fully
                                  // been taken care of).

  const CommandWheelData* pWData = rCEvt.GetWheelData();
  if (pWData)
  {
      if (CommandWheelMode::ZOOM == pWData->GetMode())
          bCommandHandled = true;     // no zooming in Command window
      else
          bCommandHandled = HandleScrollCommand( rCEvt, pHScrollBar.get(), pVScrollBar.get());
  }

  return bCommandHandled;
366}

368void SmEditWindow::KeyInput(const KeyEvent& rKEvt)
369{
  if (rKEvt.GetKeyCode().GetCode() == KEY_ESCAPE)
  {
      bool bCallBase = true;
      SfxViewShell* pViewShell = GetView();
      if ( dynamic_cast<const SmViewShell *>(pViewShell) )
      {
          // Terminate possible InPlace mode
          bCallBase = !pViewShell->Escape();
      }
      if ( bCallBase )
          Window::KeyInput( rKEvt );
  }
  else
  {
      StartCursorMove();

      bool autoClose = false;
      if (!pEditView)
          CreateEditView();
      ESelection aSelection = pEditView->GetSelection();
      // as we don't support RTL in Math, we need to swap values from selection when they were done
      // in RTL form
      aSelection.Adjust();
      OUString selected = pEditView->GetEditEngine()->GetText(aSelection);

      // Check is auto close brackets/braces is disabled
      SmModule *pMod = SM_MOD()( static_cast<SmModule*>(SfxApplication::GetModule(SfxToolsModule
::Math)) );
      if (pMod && !pMod->GetConfig()->IsAutoCloseBrackets())
          autoClose = false;
      else if (selected.trim() == "<?>")
          autoClose = true;
      else if (selected.isEmpty() && !aSelection.HasRange())
      {
          selected = pEditView->GetEditEngine()->GetText(aSelection.nEndPara);
          if (!selected.isEmpty())
          {
              sal_Int32 index = selected.indexOf("\n", aSelection.nEndPos);
              if (index != -1)
              {
                  selected = selected.copy(index, sal_Int32(aSelection.nEndPos-index));
                  if (selected.trim().isEmpty())
                      autoClose = true;
              }
              else
              {
                  sal_Int32 length = selected.getLength();
                  if (aSelection.nEndPos == length)
                      autoClose = true;
                  else
                  {
                      selected = selected.copy(aSelection.nEndPos);
                      if (selected.trim().isEmpty())
                          autoClose = true;
                  }
              }
          }
          else
              autoClose = true;
      }

      if ( !pEditView->PostKeyEvent(rKEvt) )
      {
          SmViewShell *pView = GetView();
          if ( pView && !pView->KeyInput(rKEvt) )
          {
              // F1 (help) leads to the destruction of this
              Flush();
              if ( aModifyIdle.IsActive() )
                  aModifyIdle.Stop();
              Window::KeyInput(rKEvt);
          }
          else
          {
              // SFX has maybe called a slot of the view and thus (because of a hack in SFX)
              // set the focus to the view
              SfxViewShell* pVShell = GetView();
              if ( dynamic_cast<const SmViewShell *>(pVShell) &&
                   static_cast<SmViewShell*>(pVShell)->GetGraphicWindow().HasFocus() )
              {
                  GrabFocus();
              }
          }
      }
      else
      {
          // have doc-shell modified only for formula input/change and not
          // cursor travelling and such things...
          SmDocShell *pDocShell = GetDoc();
          EditEngine *pEditEngine = GetEditEngine();
          if (pDocShell && pEditEngine)
              pDocShell->SetModified(pEditEngine->IsModified());
          aModifyIdle.Start();
      }

      // get the current char of the key event
      sal_Unicode cCharCode = rKEvt.GetCharCode();
      OUString sClose;

      if (cCharCode == '{')
          sClose = "  }";
      else if (cCharCode == '[')
          sClose = "  ]";
      else if (cCharCode == '(')
          sClose = "  )";

      // auto close the current character only when needed
      if (!sClose.isEmpty() && autoClose)
      {
          pEditView->InsertText(sClose);
          // position it at center of brackets
          aSelection.nStartPos += 2;
          aSelection.nEndPos = aSelection.nStartPos;
          pEditView->SetSelection(aSelection);
      }

      InvalidateSlots();
  }
487}

489void SmEditWindow::Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect)
490{
  if (!pEditView)
      CreateEditView();
  pEditView->Paint(rRect, &rRenderContext);
494}

496void SmEditWindow::CreateEditView()
497{
  EditEngine *pEditEngine = GetEditEngine();

  //! pEditEngine and pEditView may be 0.
  //! For example when the program is used by the document-converter
  if (pEditView || !pEditEngine)
      return;

  pEditView.reset(new EditView(pEditEngine, this));
  pEditEngine->InsertView( pEditView.get() );

  if (!pVScrollBar)
      pVScrollBar = VclPtr<ScrollBar>::Create(this, WinBits(WB_VSCROLL));
  if (!pHScrollBar)
      pHScrollBar = VclPtr<ScrollBar>::Create(this, WinBits(WB_HSCROLL));
  if (!pScrollBox)
      pScrollBox  = VclPtr<ScrollBarBox>::Create(this);
  pVScrollBar->SetScrollHdl(LINK(this, SmEditWindow, ScrollHdl)::tools::detail::makeLink( ::tools::detail::castTo<SmEditWindow
 *>(this), &SmEditWindow::LinkStubScrollHdl));
  pHScrollBar->SetScrollHdl(LINK(this, SmEditWindow, ScrollHdl)::tools::detail::makeLink( ::tools::detail::castTo<SmEditWindow
 *>(this), &SmEditWindow::LinkStubScrollHdl));
  pVScrollBar->EnableDrag();
  pHScrollBar->EnableDrag();

  pEditView->SetOutputArea(AdjustScrollBars());

  ESelection eSelection;

  pEditView->SetSelection(eSelection);
  PaintImmediately();
  pEditView->ShowCursor();

  pEditEngine->SetStatusEventHdl( LINK(this, SmEditWindow, EditStatusHdl)::tools::detail::makeLink( ::tools::detail::castTo<SmEditWindow
 *>(this), &SmEditWindow::LinkStubEditStatusHdl) );
  SetPointer(pEditView->GetPointer());

  SetScrollBarRanges();
531}


534IMPL_LINK_NOARG( SmEditWindow, EditStatusHdl, EditStatus&, void )void SmEditWindow::LinkStubEditStatusHdl(void * instance, EditStatus
& data) { return static_cast<SmEditWindow *>(instance
)->EditStatusHdl(data); } void SmEditWindow::EditStatusHdl
(__attribute__ ((unused)) EditStatus&)
535{
  if (pEditView)
      Resize();
538}

540IMPL_LINK( SmEditWindow, ScrollHdl, ScrollBar *, /*pScrollBar*/, void )void SmEditWindow::LinkStubScrollHdl(void * instance, ScrollBar
 * data) { return static_cast<SmEditWindow *>(instance)
->ScrollHdl(data); } void SmEditWindow::ScrollHdl(ScrollBar
 * )
541{
  OSL_ENSURE(pEditView, "EditView missing")do { if (true && (!(pEditView))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/starmath/source/edit.cxx"
 ":" "542" ": "), "%s", "EditView missing"); } } while (false
);
  if (pEditView)
  {
      pEditView->SetVisArea(tools::Rectangle(Point(pHScrollBar->GetThumbPos(),
                                          pVScrollBar->GetThumbPos()),
                                      pEditView->GetVisArea().GetSize()));
      pEditView->Invalidate();
  }
550}

552tools::Rectangle SmEditWindow::AdjustScrollBars()
553{
  const Size aOut( GetOutputSizePixel() );
  tools::Rectangle aRect( Point(), aOut );

  if (pVScrollBar && pHScrollBar && pScrollBox)
  {
      const long nTmp = GetSettings().GetStyleSettings().GetScrollBarSize();
      Point aPt( aRect.TopRight() ); aPt.AdjustX( -(nTmp -1) );
      pVScrollBar->SetPosSizePixel( aPt, Size(nTmp, aOut.Height() - nTmp));

      aPt = aRect.BottomLeft(); aPt.AdjustY( -(nTmp - 1) );
      pHScrollBar->SetPosSizePixel( aPt, Size(aOut.Width() - nTmp, nTmp));

      aPt.setX( pHScrollBar->GetSizePixel().Width() );
      aPt.setY( pVScrollBar->GetSizePixel().Height() );
      pScrollBox->SetPosSizePixel(aPt, Size(nTmp, nTmp ));

      aRect.SetRight( aPt.X() - 2 );
      aRect.SetBottom( aPt.Y() - 2 );
  }
  return aRect;
574}

576void SmEditWindow::SetScrollBarRanges()
577{
  // Extra method, not InitScrollBars, since it's also being used for EditEngine events
  EditEngine *pEditEngine = GetEditEngine();
  if (pVScrollBar && pHScrollBar && pEditEngine && pEditView)
  {
      long nTmp = pEditEngine->GetTextHeight();
      pVScrollBar->SetRange(Range(0, nTmp));
      pVScrollBar->SetThumbPos(pEditView->GetVisArea().Top());

      nTmp = pEditEngine->GetPaperSize().Width();
      pHScrollBar->SetRange(Range(0,nTmp));
      pHScrollBar->SetThumbPos(pEditView->GetVisArea().Left());
  }
590}

592void SmEditWindow::InitScrollBars()
593{
  if (!(pVScrollBar && pHScrollBar && pScrollBox && pEditView))
      return;

  const Size aOut( pEditView->GetOutputArea().GetSize() );
  pVScrollBar->SetVisibleSize(aOut.Height());
  pVScrollBar->SetPageSize(aOut.Height() * 8 / 10);
  pVScrollBar->SetLineSize(aOut.Height() * 2 / 10);

  pHScrollBar->SetVisibleSize(aOut.Width());
  pHScrollBar->SetPageSize(aOut.Width() * 8 / 10);
  pHScrollBar->SetLineSize(SCROLL_LINE24 );

  SetScrollBarRanges();

  pVScrollBar->Show();
  pHScrollBar->Show();
  pScrollBox->Show();
611}


614OUString SmEditWindow::GetText() const
615{
  OUString aText;
  EditEngine *pEditEngine = const_cast< SmEditWindow* >(this)->GetEditEngine();
  OSL_ENSURE( pEditEngine, "EditEngine missing" )do { if (true && (!(pEditEngine))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/starmath/source/edit.cxx"
 ":" "618" ": "), "%s", "EditEngine missing"); } } while (false
);
  if (pEditEngine)
      aText = pEditEngine->GetText();
  return aText;
622}


625void SmEditWindow::SetText(const OUString& rText)
626{
  EditEngine *pEditEngine = GetEditEngine();
  OSL_ENSURE( pEditEngine, "EditEngine missing" )do { if (true && (!(pEditEngine))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/starmath/source/edit.cxx"
 ":" "628" ": "), "%s", "EditEngine missing"); } } while (false
);
  if (!pEditEngine || pEditEngine->IsModified())
      return;

  if (!pEditView)
      CreateEditView();

  ESelection eSelection = pEditView->GetSelection();

  pEditEngine->SetText(rText);
  pEditEngine->ClearModifyFlag();

  // Restarting the timer here, prevents calling the handlers for other (currently inactive)
  // math tasks
  aModifyIdle.Start();

  pEditView->SetSelection(eSelection);
645}


648void SmEditWindow::GetFocus()
649{
  Window::GetFocus();

  if (mxAccessible.is())
  {
      // Note: will implicitly send the AccessibleStateType::FOCUSED event
      ::accessibility::AccessibleTextHelper *pHelper = mxAccessible->GetTextHelper();
      if (pHelper)
          pHelper->SetFocus();
  }

  if (!pEditView)
       CreateEditView();
  EditEngine *pEditEngine = GetEditEngine();
  if (pEditEngine)
      pEditEngine->SetStatusEventHdl( LINK(this, SmEditWindow, EditStatusHdl)::tools::detail::makeLink( ::tools::detail::castTo<SmEditWindow
 *>(this), &SmEditWindow::LinkStubEditStatusHdl) );

  //Let SmViewShell know we got focus
  if(GetView() && IsInlineEditEnabled())
      GetView()->SetInsertIntoEditWindow(true);
669}


672void SmEditWindow::LoseFocus()
673{
  EditEngine *pEditEngine = GetEditEngine();
  if (pEditEngine)
      pEditEngine->SetStatusEventHdl( Link<EditStatus&,void>() );

  Window::LoseFocus();

  if (mxAccessible.is())
  {
      // Note: will implicitly send the AccessibleStateType::FOCUSED event
      ::accessibility::AccessibleTextHelper *pHelper = mxAccessible->GetTextHelper();
      if (pHelper)
          pHelper->SetFocus(false);
  }
687}


690bool SmEditWindow::IsAllSelected() const
691{
  bool bRes = false;
  EditEngine *pEditEngine = const_cast<SmEditWindow *>(this)->GetEditEngine();
  OSL_ENSURE( pEditView, "NULL pointer" )do { if (true && (!(pEditView))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/starmath/source/edit.cxx"
 ":" "694" ": "), "%s", "NULL pointer"); } } while (false);
  OSL_ENSURE( pEditEngine, "NULL pointer" )do { if (true && (!(pEditEngine))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/starmath/source/edit.cxx"
 ":" "695" ": "), "%s", "NULL pointer"); } } while (false);
  if (pEditEngine  &&  pEditView)
  {
      ESelection eSelection( pEditView->GetSelection() );
      sal_Int32 nParaCnt = pEditEngine->GetParagraphCount();
      if (!(nParaCnt - 1))
      {
          sal_Int32 nTextLen = pEditEngine->GetText().getLength();
          bRes = !eSelection.nStartPos && (eSelection.nEndPos == nTextLen - 1);
      }
      else
      {
          bRes = !eSelection.nStartPara && (eSelection.nEndPara == nParaCnt - 1);
      }
  }
  return bRes;
711}

713void SmEditWindow::SelectAll()
714{
  OSL_ENSURE( pEditView, "NULL pointer" )do { if (true && (!(pEditView))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/starmath/source/edit.cxx"
 ":" "715" ": "), "%s", "NULL pointer"); } } while (false);
  if (pEditView)
  {
      // ALL as last two parameters refers to the end of the text
      pEditView->SetSelection( ESelection( 0, 0, EE_PARA_ALL((sal_Int32) 0x7FFFFFFF), EE_TEXTPOS_ALL((sal_Int32) 0x7FFFFFFF) ) );
  }
721}

723void SmEditWindow::MarkError(const Point &rPos)
724{
  OSL_ENSURE( pEditView, "EditView missing" )do { if (true && (!(pEditView))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/starmath/source/edit.cxx"
 ":" "725" ": "), "%s", "EditView missing"); } } while (false
);
  if (pEditView)
  {
      const sal_uInt16        nCol = sal::static_int_cast< sal_uInt16 >(rPos.X());
      const sal_uInt16        nRow = sal::static_int_cast< sal_uInt16 >(rPos.Y() - 1);

      pEditView->SetSelection(ESelection(nRow, nCol - 1, nRow, nCol));
      GrabFocus();
  }
734}

736// Makes selection to next <?> symbol
737void SmEditWindow::SelNextMark()
738{
  EditEngine *pEditEngine = GetEditEngine();
  OSL_ENSURE( pEditView, "NULL pointer" )do { if (true && (!(pEditView))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/starmath/source/edit.cxx"
 ":" "740" ": "), "%s", "NULL pointer"); } } while (false);
  OSL_ENSURE( pEditEngine, "NULL pointer" )do { if (true && (!(pEditEngine))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/starmath/source/edit.cxx"
 ":" "741" ": "), "%s", "NULL pointer"); } } while (false);
  if (!pEditEngine || !pEditView)
      return;

  ESelection eSelection = pEditView->GetSelection();
  sal_Int32 nPos = eSelection.nEndPos;
  sal_Int32 nCounts = pEditEngine->GetParagraphCount();

  while (eSelection.nEndPara < nCounts)
  {
      OUString aText = pEditEngine->GetText(eSelection.nEndPara);
      nPos = aText.indexOf("<?>", nPos);
      if (nPos != -1)
      {
          pEditView->SetSelection(ESelection(
              eSelection.nEndPara, nPos, eSelection.nEndPara, nPos + 3));
          break;
      }

      nPos = 0;
      eSelection.nEndPara++;
  }
763}

765void SmEditWindow::SelPrevMark()
766{
  EditEngine *pEditEngine = GetEditEngine();
  OSL_ENSURE( pEditEngine, "NULL pointer" )do { if (true && (!(pEditEngine))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/starmath/source/edit.cxx"
 ":" "768" ": "), "%s", "NULL pointer"); } } while (false);
  OSL_ENSURE( pEditView, "NULL pointer" )do { if (true && (!(pEditView))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/starmath/source/edit.cxx"
 ":" "769" ": "), "%s", "NULL pointer"); } } while (false);
  if (!(pEditEngine  &&  pEditView))
      return;

  ESelection eSelection = pEditView->GetSelection();
  sal_Int32 nPara = eSelection.nStartPara;
  sal_Int32 nMax = eSelection.nStartPos;
  OUString aText(pEditEngine->GetText(nPara));
  const OUString aMark("<?>");
  sal_Int32 nPos;

  while ( (nPos = aText.lastIndexOf(aMark, nMax)) < 0 )
  {
      if (--nPara < 0)
          return;
      aText = pEditEngine->GetText(nPara);
      nMax = aText.getLength();
  }
  pEditView->SetSelection(ESelection(nPara, nPos, nPara, nPos + 3));
788}

790bool SmEditWindow::HasMark(const OUString& rText)
  // returns true iff 'rText' contains a mark
792{
  return rText.indexOf("<?>") != -1;
794}

796void SmEditWindow::MouseMove(const MouseEvent &rEvt)
797{
  if (pEditView)
      pEditView->MouseMove(rEvt);
800}

802sal_Int8 SmEditWindow::AcceptDrop( const AcceptDropEvent& /*rEvt*/ )
803{
  return DND_ACTION_NONEcss::datatransfer::dnd::DNDConstants::ACTION_NONE;
805}

807sal_Int8 SmEditWindow::ExecuteDrop( const ExecuteDropEvent& /*rEvt*/ )
808{
  return DND_ACTION_NONEcss::datatransfer::dnd::DNDConstants::ACTION_NONE;
810}

812ESelection SmEditWindow::GetSelection() const
813{
  // pointer may be 0 when reloading a document and the old view
  // was already destroyed
  //(OSL_ENSURE( pEditView, "NULL pointer" );
  ESelection eSel;
  if (pEditView)
      eSel = pEditView->GetSelection();
  return eSel;
821}

823void SmEditWindow::SetSelection(const ESelection &rSel)
824{
  OSL_ENSURE( pEditView, "NULL pointer" )do { if (true && (!(pEditView))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/starmath/source/edit.cxx"
 ":" "825" ": "), "%s", "NULL pointer"); } } while (false);
  if (pEditView)
      pEditView->SetSelection(rSel);
  InvalidateSlots();
829}

831bool SmEditWindow::IsEmpty() const
832{
  EditEngine *pEditEngine = const_cast<SmEditWindow *>(this)->GetEditEngine();
  bool bEmpty = ( pEditEngine && pEditEngine->GetTextLen() == 0 );
  return bEmpty;
836}

838bool SmEditWindow::IsSelected() const
839{
  return pEditView && pEditView->HasSelection();
841}


844void SmEditWindow::UpdateStatus( bool bSetDocModified )
845{
  SmModule *pMod = SM_MOD()( static_cast<SmModule*>(SfxApplication::GetModule(SfxToolsModule
::Math)) );
  if (pMod && pMod->GetConfig()->IsAutoRedraw())
      Flush();
  if ( bSetDocModified )
      GetDoc()->SetModified();
851}

853void SmEditWindow::Cut()
854{
  OSL_ENSURE( pEditView, "EditView missing" )do { if (true && (!(pEditView))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/starmath/source/edit.cxx"
 ":" "855" ": "), "%s", "EditView missing"); } } while (false
);
  if (pEditView)
  {
      pEditView->Cut();
      UpdateStatus(true);
  }
861}

863void SmEditWindow::Copy()
864{
  OSL_ENSURE( pEditView, "EditView missing" )do { if (true && (!(pEditView))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/starmath/source/edit.cxx"
 ":" "865" ": "), "%s", "EditView missing"); } } while (false
);
  if (pEditView)
      pEditView->Copy();
868}

870void SmEditWindow::Paste()
871{
  OSL_ENSURE( pEditView, "EditView missing" )do { if (true && (!(pEditView))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/starmath/source/edit.cxx"
 ":" "872" ": "), "%s", "EditView missing"); } } while (false
);
  if (pEditView)
  {
      pEditView->Paste();
      UpdateStatus(true);
  }
878}

880void SmEditWindow::Delete()
881{
  OSL_ENSURE( pEditView, "EditView missing" )do { if (true && (!(pEditView))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/starmath/source/edit.cxx"
 ":" "882" ": "), "%s", "EditView missing"); } } while (false
);
  if (pEditView)
  {
      pEditView->DeleteSelected();
      UpdateStatus(true);
  }
888}

890void SmEditWindow::InsertText(const OUString& rText)
891{
  OSL_ENSURE( pEditView, "EditView missing" )do { if (true && (!(pEditView))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/starmath/source/edit.cxx"
 ":" "892" ": "), "%s", "EditView missing"); } } while (false
);
  if (!pEditView)
      return;

  // Note: Insertion of a space in front of commands is done here and
  // in SmEditWindow::InsertCommand.
  ESelection aSelection = pEditView->GetSelection();
  OUString aCurrentFormula = pEditView->GetEditEngine()->GetText();
  sal_Int32 nStartIndex = 0;

  // get the start position (when we get a multi line formula)
  for (sal_Int32 nParaPos = 0; nParaPos < aSelection.nStartPara; nParaPos++)
       nStartIndex = aCurrentFormula.indexOf("\n", nStartIndex) + 1;

  nStartIndex += aSelection.nStartPos;

  // TODO: unify this function with the InsertCommand: The do the same thing for different
  // callers
  OUString string(rText);

  OUString selected(pEditView->GetSelected());
  // if we have text selected, use it in the first placeholder
  if (!selected.isEmpty())
      string = string.replaceFirst("<?>", selected);

  // put a space before a new command if not in the beginning of a line
  if (aSelection.nStartPos > 0 && aCurrentFormula[nStartIndex - 1] != ' ')
      string = " " + string;

  /*
    fdo#65588 -  Elements Dock: Scrollbar moves into input window
    This change "solves" the visual problem. But I don't think so
    this is the best solution.
  */
  pVScrollBar->Hide();
  pHScrollBar->Hide();
  pEditView->InsertText(string);
  AdjustScrollBars();
  pVScrollBar->Show();
  pHScrollBar->Show();

  // Remember start of the selection and move the cursor there afterwards.
  aSelection.nEndPara = aSelection.nStartPara;
  if (HasMark(string))
  {
      aSelection.nEndPos = aSelection.nStartPos;
      pEditView->SetSelection(aSelection);
      SelNextMark();
  }
  else
  {   // set selection after inserted text
      aSelection.nEndPos = aSelection.nStartPos + string.getLength();
      aSelection.nStartPos = aSelection.nEndPos;
      pEditView->SetSelection(aSelection);
  }

  aModifyIdle.Start();
  StartCursorMove();
  GrabFocus();
951}

953void SmEditWindow::Flush()
954{
  EditEngine *pEditEngine = GetEditEngine();
  if (pEditEngine  &&  pEditEngine->IsModified())
  {
      pEditEngine->ClearModifyFlag();
      SmViewShell *pViewSh = rCmdBox.GetView();
      if (pViewSh)
      {
          std::unique_ptr<SfxStringItem> pTextToFlush = std::make_unique<SfxStringItem>(SID_TEXT((30000 + 256) + 100), GetText());
          pViewSh->GetViewFrame()->GetDispatcher()->ExecuteList(
                  SID_TEXT((30000 + 256) + 100), SfxCallMode::RECORD,
                  { pTextToFlush.get() });
      }
  }
  if (aCursorMoveIdle.IsActive())
  {
      aCursorMoveIdle.Stop();
      CursorMoveTimerHdl(&aCursorMoveIdle);
  }
973}

975void SmEditWindow::DeleteEditView()
976{
  if (pEditView)
  {
      std::unique_ptr<EditEngine> xEditEngine(pEditView->GetEditEngine());
      if (xEditEngine)
      {
          xEditEngine->SetStatusEventHdl( Link<EditStatus&,void>() );
          xEditEngine->RemoveView( pEditView.get() );
      }
      pEditView.reset();
  }
987}

989uno::Reference< XAccessible > SmEditWindow::CreateAccessible()
990{
  if (!mxAccessible.is())
  {
      mxAccessible.set(new SmEditAccessible( this ));
      mxAccessible->Init();
  }
  return uno::Reference< XAccessible >(mxAccessible.get());
997}

999/* 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/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
*   Licensed to the Apache Software Foundation (ASF) under one or more
*   contributor license agreements. See the NOTICE file distributed
*   with this work for additional information regarding copyright
*   ownership. The ASF licenses this file to you under the Apache
*   License, Version 2.0 (the "License"); you may not use this file
*   except in compliance with the License. You may obtain a copy of
*   the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/

20#ifndef INCLUDED_VCL_PTR_HXX
21#define INCLUDED_VCL_PTR_HXX

23#include <sal/config.h>

25#include <rtl/ref.hxx>

27#include <utility>
28#include <type_traits>

30#ifdef DBG_UTIL
31#ifndef _WIN32
32#include <vcl/vclmain.hxx>
33#endif
34#endif

36class VclReferenceBase;

38namespace vcl::detail {

40template<typename>
41constexpr bool isIncompleteOrDerivedFromVclReferenceBase(...) { return true; }

43template<typename T> constexpr bool isIncompleteOrDerivedFromVclReferenceBase(
  int (*)[sizeof(T)])
45{ return std::is_base_of<VclReferenceBase, T>::value; }

47} // namespace vcl::detail

49/**
* A thin wrapper around rtl::Reference to implement the acquire and dispose semantics we want for references to vcl::Window subclasses.
*
* For more details on the design please see vcl/README.lifecycle
*
* @param reference_type must be a subclass of vcl::Window
*/
56template <class reference_type>
57class VclPtr
58{
  static_assert(
      vcl::detail::isIncompleteOrDerivedFromVclReferenceBase<reference_type>(
          nullptr),
      "template argument type must be derived from VclReferenceBase");

  ::rtl::Reference<reference_type> m_rInnerRef;

66public:
  /** Constructor...
   */
  VclPtr()
      : m_rInnerRef()
  {}

  /** Constructor...
   */
  VclPtr (reference_type * pBody)
      : m_rInnerRef(pBody)
  {}

  /** Constructor... that doesn't take a ref.
   */
  VclPtr (reference_type * pBody, __sal_NoAcquire)
      : m_rInnerRef(pBody, SAL_NO_ACQUIRE)
  {}

  /** Up-casting conversion constructor: Copies interface reference.

      Does not work for up-casts to ambiguous bases.  For the special case of
      up-casting to Reference< XInterface >, see the corresponding conversion
      operator.

      @param rRef another reference
  */
  template< class derived_type >
  VclPtr(
      const VclPtr< derived_type > & rRef,
      typename std::enable_if<
          std::is_base_of<reference_type, derived_type>::value, int>::type
          = 0 )
      : m_rInnerRef( static_cast<reference_type*>(rRef) )
  {
  }

103#if defined(DBG_UTIL) && !defined(_WIN32)
  virtual ~VclPtr()
  {
      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__));
      // We can be one of the intermediate counts, but if we are the last
      // VclPtr keeping this object alive, then something forgot to call dispose().
      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__))
              && "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__));
  }
  VclPtr(VclPtr const &) = default;
  VclPtr(VclPtr &&) = default;
  VclPtr & operator =(VclPtr const &) = default;
  VclPtr & operator =(VclPtr &&) = default;
116#endif

  /**
   * A construction helper for VclPtr. Since VclPtr types are created
   * with a reference-count of one - to help fit into the existing
   * code-flow; this helps us to construct them easily.
   *
   * For more details on the design please see vcl/README.lifecycle
   *
   * @tparam reference_type must be a subclass of vcl::Window
   */
  template<typename... Arg> [[nodiscard]] static VclPtr< reference_type > Create(Arg &&... arg)
  {
      return VclPtr< reference_type >( new reference_type(std::forward<Arg>(arg)...), SAL_NO_ACQUIRE );
  }

  /** Probably most common used: handle->someBodyOp().
   */
  reference_type * operator->() const
  {
      return m_rInnerRef.get();
  }

  /** Get the body. Can be used instead of operator->().
       I.e. handle->someBodyOp() and handle.get()->someBodyOp()
       are the same.
    */
  reference_type * get() const
  {
      return m_rInnerRef.get();
  }

  void set(reference_type *pBody)
  {
      m_rInnerRef.set(pBody);
  }

  void reset(reference_type *pBody)
  {
      m_rInnerRef.set(pBody);
  }

  /** Up-casting copy assignment operator.

      Does not work for up-casts to ambiguous bases.

      @param rRef another reference
  */
  template<typename derived_type>
  typename std::enable_if<
      std::is_base_of<reference_type, derived_type>::value,
      VclPtr &>::type
  operator =(VclPtr<derived_type> const & rRef)
  {
      m_rInnerRef.set(rRef.get());
      return *this;
  }

  VclPtr & operator =(reference_type * pBody)
  {
      m_rInnerRef.set(pBody);
      return *this;
  }

  operator reference_type * () const
  {
      return m_rInnerRef.get();
  }

  explicit operator bool () const
  {
      return m_rInnerRef.get() != nullptr;
  }

  void clear()
  {
      m_rInnerRef.clear();
  }

  void reset()
  {
      m_rInnerRef.clear();
  }

  void disposeAndClear()
  {
      // hold it alive for the lifetime of this method
      ::rtl::Reference<reference_type> aTmp(m_rInnerRef);
4
←
Calling copy constructor for 'Reference<ScrollBarBox>'→
7
←
Returning from copy constructor for 'Reference<ScrollBarBox>'→
      m_rInnerRef.clear(); // we should use some 'swap' method ideally ;-)
8
←
Calling 'Reference::clear'→
15
←
Returning; memory was released→
      if (aTmp.get()) {
16
←
Calling 'Reference::get'→
          aTmp->disposeOnce();
      }
  }

  /** Needed to place VclPtr's into STL collection.
   */
  bool operator< (const VclPtr<reference_type> & handle) const
  {
      return (m_rInnerRef < handle.m_rInnerRef);
  }
216}; // class VclPtr

218template<typename T1, typename T2>
219inline bool operator ==(VclPtr<T1> const & p1, VclPtr<T2> const & p2) {
  return p1.get() == p2.get();
221}

223template<typename T> inline bool operator ==(VclPtr<T> const & p1, T const * p2)
224{
  return p1.get() == p2;
226}

228template<typename T> inline bool operator ==(VclPtr<T> const & p1, T * p2) {
  return p1.get() == p2;
230}

232template<typename T> inline bool operator ==(T const * p1, VclPtr<T> const & p2)
233{
  return p1 == p2.get();
235}

237template<typename T> inline bool operator ==(T * p1, VclPtr<T> const & p2) {
  return p1 == p2.get();
239}

241template<typename T1, typename T2>
242inline bool operator !=(VclPtr<T1> const & p1, VclPtr<T2> const & p2) {
  return !(p1 == p2);
244}

246template<typename T> inline bool operator !=(VclPtr<T> const & p1, T const * p2)
247{
  return !(p1 == p2);
249}

251template<typename T> inline bool operator !=(VclPtr<T> const & p1, T * p2) {
  return !(p1 == p2);
253}

255template<typename T> inline bool operator !=(T const * p1, VclPtr<T> const & p2)
256{
  return !(p1 == p2);
258}

260template<typename T> inline bool operator !=(T * p1, VclPtr<T> const & p2) {
  return !(p1 == p2);
262}

264/**
* A construction helper for a temporary VclPtr. Since VclPtr types
* are created with a reference-count of one - to help fit into
* the existing code-flow; this helps us to construct them easily.
* see also VclPtr::Create and ScopedVclPtr
*
* For more details on the design please see vcl/README.lifecycle
*
* @param reference_type must be a subclass of vcl::Window
*/
274template <class reference_type>
275class SAL_WARN_UNUSED__attribute__((warn_unused)) VclPtrInstance final : public VclPtr<reference_type>
276{
277public:
  template<typename... Arg> VclPtrInstance(Arg &&... arg)
      : VclPtr<reference_type>( new reference_type(std::forward<Arg>(arg)...), SAL_NO_ACQUIRE )
  {
  }

  /**
   * Override and disallow this, to prevent people accidentally calling it and actually
   * getting VclPtr::Create and getting a naked VclPtr<> instance
   */
  template<typename... Arg> static VclPtrInstance< reference_type > Create(Arg &&... ) = delete;
288};

290template <class reference_type>
291class ScopedVclPtr : public VclPtr<reference_type>
292{
293public:
  /** Constructor...
   */
  ScopedVclPtr()
      : VclPtr<reference_type>()
  {}

  /** Constructor
   */
  ScopedVclPtr (reference_type * pBody)
      : VclPtr<reference_type>(pBody)
  {}

  /** Copy constructor...
   */
  ScopedVclPtr (const VclPtr<reference_type> & handle)
      : VclPtr<reference_type>(handle)
  {}

  /**
     Assignment that releases the last reference.
   */
  void disposeAndReset(reference_type *pBody)
  {
      if (pBody != this->get()) {
          VclPtr<reference_type>::disposeAndClear();
          VclPtr<reference_type>::set(pBody);
      }
  }

  /**
     Assignment that releases the last reference.
   */
  ScopedVclPtr<reference_type>& operator = (reference_type * pBody)
  {
      disposeAndReset(pBody);
      return *this;
  }

  /** Up-casting conversion constructor: Copies interface reference.

      Does not work for up-casts to ambiguous bases.  For the special case of
      up-casting to Reference< XInterface >, see the corresponding conversion
      operator.

      @param rRef another reference
  */
  template< class derived_type >
  ScopedVclPtr(
      const VclPtr< derived_type > & rRef,
      typename std::enable_if<
          std::is_base_of<reference_type, derived_type>::value, int>::type
          = 0 )
      : VclPtr<reference_type>( rRef )
  {
  }

  /** Up-casting assignment operator.

      Does not work for up-casts to ambiguous bases.

      @param rRef another VclPtr
  */
  template<typename derived_type>
  typename std::enable_if<
      std::is_base_of<reference_type, derived_type>::value,
      ScopedVclPtr &>::type
  operator =(VclPtr<derived_type> const & rRef)
  {
      disposeAndReset(rRef.get());
      return *this;
  }

  /**
   * Override and disallow this, to prevent people accidentally calling it and actually
   * getting VclPtr::Create and getting a naked VclPtr<> instance
   */
  template<typename... Arg> static ScopedVclPtr< reference_type > Create(Arg &&... ) = delete;

  ~ScopedVclPtr()
  {
      VclPtr<reference_type>::disposeAndClear();
      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
  }

378private:
  // Most likely we don't want this default copy-constructor.
  ScopedVclPtr (const ScopedVclPtr<reference_type> &) = delete;
  // And certainly we don't want a default assignment operator.
  ScopedVclPtr<reference_type>& operator = (const ScopedVclPtr<reference_type> &) = delete;
  // And disallow reset as that doesn't call disposeAndClear on the original reference
  void reset() = delete;
  void reset(reference_type *pBody) = delete;

387protected:
  ScopedVclPtr (reference_type * pBody, __sal_NoAcquire)
      : VclPtr<reference_type>(pBody, SAL_NO_ACQUIRE)
  {}
391};

393/**
* A construction helper for ScopedVclPtr. Since VclPtr types are created
* with a reference-count of one - to help fit into the existing
* code-flow; this helps us to construct them easily.
*
* For more details on the design please see vcl/README.lifecycle
*
* @param reference_type must be a subclass of vcl::Window
*/
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:
  template<typename... Arg> ScopedVclPtrInstance(Arg &&... arg)
      : ScopedVclPtr<reference_type>( new reference_type(std::forward<Arg>(arg)...), SAL_NO_ACQUIRE )
  {
  }

  /**
   * Override and disallow this, to prevent people accidentally calling it and actually
   * getting VclPtr::Create and getting a naked VclPtr<> instance
   */
  template<typename... Arg> static ScopedVclPtrInstance< reference_type > Create(Arg &&...) = delete;

421private:
  // Prevent the above perfect forwarding ctor from hijacking (accidental)
  // attempts at ScopedVclPtrInstance copy construction (where the hijacking
  // would typically lead to somewhat obscure error messages); both non-const
  // and const variants are needed here, as the ScopedVclPtr base class has a
  // const--variant copy ctor, so the implicitly declared copy ctor for
  // ScopedVclPtrInstance would also be the const variant, so non-const copy
  // construction attempts would be hijacked by the perfect forwarding ctor;
  // but if we only declared a non-const variant here, the const variant would
  // no longer be implicitly declared (as there would already be an explicitly
  // declared copy ctor), so const copy construction attempts would then be
  // hijacked by the perfect forwarding ctor:
  ScopedVclPtrInstance(ScopedVclPtrInstance &) = delete;
  ScopedVclPtrInstance(ScopedVclPtrInstance const &) = delete;
435};
436#if defined _MSC_VER
437#pragma warning(pop)
438#endif

440#endif // INCLUDED_VCL_PTR_HXX

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/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
*   Licensed to the Apache Software Foundation (ASF) under one or more
*   contributor license agreements. See the NOTICE file distributed
*   with this work for additional information regarding copyright
*   ownership. The ASF licenses this file to you under the Apache
*   License, Version 2.0 (the "License"); you may not use this file
*   except in compliance with the License. You may obtain a copy of
*   the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/

20#ifndef INCLUDED_RTL_REF_HXX
21#define INCLUDED_RTL_REF_HXX

23#include "sal/config.h"

25#include <cassert>
26#include <cstddef>
27#include <functional>
28#ifdef LIBO_INTERNAL_ONLY1
29#include <type_traits>
30#endif

32#include "sal/types.h"

34namespace rtl
35{

37/** Template reference class for reference type.
38*/
39template <class reference_type>
40class Reference
41{
  /** The <b>reference_type</b> body pointer.
   */
  reference_type * m_pBody;


47public:
  /** Constructor...
   */
  Reference()
      : m_pBody (NULL__null)
  {}


  /** Constructor...
   */
  Reference (reference_type * pBody, __sal_NoAcquire)
      : m_pBody (pBody)
  {
  }

  /** Constructor...
   */
  Reference (reference_type * pBody)
      : m_pBody (pBody)
  {
      if (m_pBody)
          m_pBody->acquire();
  }

  /** Copy constructor...
   */
  Reference (const Reference<reference_type> & handle)
      : m_pBody (handle.m_pBody)
  {
      if (m_pBody)
5
←
Assuming field 'm_pBody' is non-null→
6
←
Taking true branch→
          m_pBody->acquire();
  }

80#ifdef LIBO_INTERNAL_ONLY1
  /** Move constructor...
   */
  Reference (Reference<reference_type> && handle) noexcept
      : m_pBody (handle.m_pBody)
  {
      handle.m_pBody = nullptr;
  }
88#endif

90#if defined LIBO_INTERNAL_ONLY1
  /** Up-casting conversion constructor: Copies interface reference.

      Does not work for up-casts to ambiguous bases.

      @param rRef another reference
  */
  template< class derived_type >
  inline Reference(
      const Reference< derived_type > & rRef,
      std::enable_if_t<std::is_base_of_v<reference_type, derived_type>, int> = 0 )
      : m_pBody (rRef.get())
  {
      if (m_pBody)
          m_pBody->acquire();
  }
106#endif

  /** Destructor...
   */
  ~Reference() COVERITY_NOEXCEPT_FALSE
  {
      if (m_pBody)
          m_pBody->release();
  }

  /** Set...
       Similar to assignment.
   */
  Reference<reference_type> &
  SAL_CALL set (reference_type * pBody)
  {
      if (pBody)
          pBody->acquire();
      reference_type * const pOld = m_pBody;
      m_pBody = pBody;
      if (pOld)
          pOld->release();
      return *this;
  }

  /** Assignment.
       Unbinds this instance from its body (if bound) and
       bind it to the body represented by the handle.
   */
  Reference<reference_type> &
  SAL_CALL operator= (const Reference<reference_type> & handle)
  {
      return set( handle.m_pBody );
  }

141#ifdef LIBO_INTERNAL_ONLY1
  /** Assignment.
   *   Unbinds this instance from its body (if bound),
   *   bind it to the body represented by the handle, and
   *   set the body represented by the handle to nullptr.
   */
  Reference<reference_type> &
  operator= (Reference<reference_type> && handle)
  {
      // self-movement guts ourself
      if (m_pBody)
          m_pBody->release();
      m_pBody = handle.m_pBody;
      handle.m_pBody = nullptr;
      return *this;
  }
157#endif

  /** Assignment...
   */
  Reference<reference_type> &
  SAL_CALL operator= (reference_type * pBody)
  {
      return set( pBody );
  }

  /** Unbind the body from this handle.
       Note that for a handle representing a large body,
       "handle.clear().set(new body());" _might_
       perform a little bit better than "handle.set(new body());",
       since in the second case two large objects exist in memory
       (the old body and the new body).
   */
  Reference<reference_type> & SAL_CALL clear()
  {
      if (m_pBody8.1
Field 'm_pBody' is non-null
1
Field 'm_pBody' is non-null
1
Field 'm_pBody' is non-null
1
Field 'm_pBody' is non-null
)
9
←
Taking true branch→
      {
          reference_type * const pOld = m_pBody;
          m_pBody = NULL__null;
          pOld->release();
10
←
Calling 'VclReferenceBase::release'→
14
←
Returning; memory was released→
      }
      return *this;
  }


  /** Get the body. Can be used instead of operator->().
       I.e. handle->someBodyOp() and handle.get()->someBodyOp()
       are the same.
   */
  reference_type * SAL_CALL get() const
  {
      return m_pBody;
17
←
Use of memory after it is freed
  }


  /** Probably most common used: handle->someBodyOp().
   */
  reference_type * SAL_CALL operator->() const
  {
      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__));
      return m_pBody;
  }


  /** Allows (*handle).someBodyOp().
  */
  reference_type & SAL_CALL operator*() const
  {
      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__));
      return *m_pBody;
  }


  /** Returns True if the handle does point to a valid body.
   */
  bool SAL_CALL is() const
  {
      return (m_pBody != NULL__null);
  }

221#if defined LIBO_INTERNAL_ONLY1
  /** Returns True if the handle does point to a valid body.
   */
  explicit operator bool() const
  {
      return is();
  }
228#endif

  /** Returns True if this points to pBody.
   */
  bool SAL_CALL operator== (const reference_type * pBody) const
  {
      return (m_pBody == pBody);
  }


  /** Returns True if handle points to the same body.
   */
  bool
  SAL_CALL operator== (const Reference<reference_type> & handle) const
  {
      return (m_pBody == handle.m_pBody);
  }


  /** Needed to place References into STL collection.
   */
  bool
  SAL_CALL operator!= (const Reference<reference_type> & handle) const
  {
      return (m_pBody != handle.m_pBody);
  }


  /** Needed to place References into STL collection.
   */
  bool
  SAL_CALL operator< (const Reference<reference_type> & handle) const
  {
      return (m_pBody < handle.m_pBody);
  }


  /** Needed to place References into STL collection.
   */
  bool
  SAL_CALL operator> (const Reference<reference_type> & handle) const
  {
      return (m_pBody > handle.m_pBody);
  }
272};

274} // namespace rtl

276#if defined LIBO_INTERNAL_ONLY1
277namespace std
278{

280/// @cond INTERNAL
281/**
Make rtl::Reference hashable by default for use in STL containers.

@since LibreOffice 6.3
285*/
286template<typename T>
287struct hash<::rtl::Reference<T>>
288{
  std::size_t operator()(::rtl::Reference<T> const & s) const
  { return std::size_t(s.get()); }
291};
292/// @endcond

294}

296#endif

298#endif /* ! INCLUDED_RTL_REF_HXX */

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