    /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
    /*
     * 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 .
     */

    #include <svx/svdpagv.hxx>
    #include <com/sun/star/awt/XWindow.hpp>
    #include <com/sun/star/awt/PosSize.hpp>
    #include <svx/svdoutl.hxx>
    #include <svx/xpoly.hxx>
    #include <svx/svdouno.hxx>
    #include <svx/svdpage.hxx>
    #include <svx/svdview.hxx>

    #include <svx/svdedxv.hxx>
    #include <editeng/outliner.hxx>
    #include <svx/svdetc.hxx>
    #include <svx/svdobj.hxx>
    #include <svx/svditer.hxx>
    #include <svx/svdogrp.hxx>
    #include <svx/svdtypes.hxx>
    #include <svx/svdoole2.hxx>

    #include <sdr/contact/objectcontactofpageview.hxx>
    #include <svx/sdr/contact/viewobjectcontactredirector.hxx>
    #include <svx/fmview.hxx>

    #include <algorithm>

    #include <svx/sdrpagewindow.hxx>
    #include <svx/sdrpaintwindow.hxx>
    #include <comphelper/lok.hxx>
    #include <basegfx/range/b2irectangle.hxx>

    using namespace ::com::sun::star;

    // interface to SdrPageWindow

    SdrPageWindow* SdrPageView::FindPageWindow(SdrPaintWindow& rPaintWindow) const
    {
        for(SdrPageWindowVector::const_iterator a = maPageWindows.begin(); a != maPageWindows.end(); ++a)
        {
            if(&((*a)->GetPaintWindow()) == &rPaintWindow)
            {
                return *a;
            }
        }

        return nullptr;
    }

    const SdrPageWindow* SdrPageView::FindPatchedPageWindow( const OutputDevice& _rOutDev ) const
    {
        for (   SdrPageWindowVector::const_iterator loop = maPageWindows.begin();
                loop != maPageWindows.end();
                ++loop
            )
        {
            const SdrPageWindow& rPageWindow( *(*loop) );
            const SdrPaintWindow& rPaintWindow( rPageWindow.GetOriginalPaintWindow() ? *rPageWindow.GetOriginalPaintWindow() : rPageWindow.GetPaintWindow() );
            if ( &rPaintWindow.GetOutputDevice() == &_rOutDev )
            {
                return &rPageWindow;
            }
        }

        return nullptr;
    }

    SdrPageWindow* SdrPageView::FindPageWindow(const OutputDevice& rOutDev) const
    {
        for(SdrPageWindowVector::const_iterator a = maPageWindows.begin(); a != maPageWindows.end(); ++a)
        {
            if(&((*a)->GetPaintWindow().GetOutputDevice()) == &rOutDev)
            {
                return *a;
            }
        }

        return nullptr;
    }

    SdrPageWindow* SdrPageView::GetPageWindow(sal_uInt32 nIndex) const
    {
        if(nIndex < maPageWindows.size())
        {
            return maPageWindows[nIndex];
        }

        return nullptr;
    }

    void SdrPageView::ClearPageWindows()
    {
        for(SdrPageWindowVector::const_iterator a = maPageWindows.begin(); a != maPageWindows.end(); ++a)
        {
            delete *a;
        }

        maPageWindows.clear();
    }

    SdrPageWindow* SdrPageView::RemovePageWindow(SdrPageWindow& rOld)
    {
        const SdrPageWindowVector::iterator aFindResult = ::std::find(maPageWindows.begin(), maPageWindows.end(), &rOld);

        if(aFindResult != maPageWindows.end())
        {
            // remember return value
            SdrPageWindow* pSdrPageWindow = *aFindResult;
            maPageWindows.erase(aFindResult);
            return pSdrPageWindow;
        }

        return nullptr;
    }

    SdrPageView::SdrPageView(SdrPage* pPage1, SdrView& rNewView)
    :   mrView(rNewView),
        // col_auto color lets the view takes the default SvxColorConfig entry
        maDocumentColor( COL_AUTO ),
        maBackgroundColor( COL_AUTO ), // #i48367# also react on autocolor
        mpPreparedPageWindow(nullptr) // #i72752#
    {
        mpPage = pPage1;

        if(mpPage)
        {
            aPgOrg.setX(mpPage->GetLeftBorder() );
            aPgOrg.setY(mpPage->GetUpperBorder() );
        }
        // For example, in the case of charts, there is a LayerAdmin, but it has no valid values. Therefore
        // a solution like pLayerAdmin->getVisibleLayersODF(aLayerVisi) is not possible. So use the
        // generic SetAll() for now.
        aLayerVisi.SetAll();
        aLayerPrn.SetAll();

        mbHasMarked = false;
        mbVisible = false;
        pCurrentList = nullptr;
        pCurrentGroup = nullptr;
        SetCurrentGroupAndList(nullptr, mpPage);

        for(sal_uInt32 a(0); a < rNewView.PaintWindowCount(); a++)
        {
            AddPaintWindowToPageView(*rNewView.GetPaintWindow(a));
        }
    }

    SdrPageView::~SdrPageView()
    {

        // cleanup window vector
        ClearPageWindows();
    }

    void SdrPageView::AddPaintWindowToPageView(SdrPaintWindow& rPaintWindow)
    {
        if(!FindPageWindow(rPaintWindow))
        {
            maPageWindows.push_back(new SdrPageWindow(*this, rPaintWindow));
        }
    }

    void SdrPageView::RemovePaintWindowFromPageView(SdrPaintWindow& rPaintWindow)
    {
        SdrPageWindow* pCandidate = FindPageWindow(rPaintWindow);

        if(pCandidate)
        {
            pCandidate = RemovePageWindow(*pCandidate);
            delete pCandidate;
        }
    }

    css::uno::Reference< css::awt::XControlContainer > SdrPageView::GetControlContainer( const OutputDevice& _rDevice ) const
    {
        css::uno::Reference< css::awt::XControlContainer > xReturn;
        const SdrPageWindow* pCandidate = FindPatchedPageWindow( _rDevice );

        if ( pCandidate )
            xReturn = pCandidate->GetControlContainer();

        return xReturn;
    }

    void SdrPageView::ModelHasChanged()
    {
        if (GetCurrentGroup()!=nullptr) CheckCurrentGroup();
    }

    bool SdrPageView::IsReadOnly() const
    {
        return (nullptr == GetPage() || GetView().GetModel()->IsReadOnly() || GetPage()->IsReadOnly() || GetObjList()->IsReadOnly());
    }

    void SdrPageView::Show()
    {
        if(!IsVisible())
        {
            mbVisible = true;

            for(sal_uInt32 a(0); a < GetView().PaintWindowCount(); a++)
            {
                AddPaintWindowToPageView(*GetView().GetPaintWindow(a));
            }
        }
    }

    void SdrPageView::Hide()
    {
        if(IsVisible())
        {
            if (!comphelper::LibreOfficeKit::isActive())
            {
                InvalidateAllWin();
            }
            mbVisible = false;
            ClearPageWindows();
        }
    }

    tools::Rectangle SdrPageView::GetPageRect() const
    {
        if (GetPage()==nullptr) return tools::Rectangle();
        return tools::Rectangle(Point(),Size(GetPage()->GetWidth()+1,GetPage()->GetHeight()+1));
    }

    void SdrPageView::InvalidateAllWin()
    {
        if(IsVisible() && GetPage())
        {
            tools::Rectangle aRect(Point(0,0),Size(GetPage()->GetWidth()+1,GetPage()->GetHeight()+1));
            aRect.Union(GetPage()->GetAllObjBoundRect());
            GetView().InvalidateAllWin(aRect);
        }
    }

    void SdrPageView::PrePaint()
    {
        const sal_uInt32 nCount(PageWindowCount());

        for(sal_uInt32 a(0); a < nCount; a++)
        {
            SdrPageWindow* pCandidate = GetPageWindow(a);

            if(pCandidate)
            {
                pCandidate->PrePaint();
            }
        }
    }

    void SdrPageView::CompleteRedraw(
        SdrPaintWindow& rPaintWindow, const vcl::Region& rReg, sdr::contact::ViewObjectContactRedirector* pRedirector )
    {
        if(GetPage())
        {
            SdrPageWindow* pPageWindow = FindPageWindow(rPaintWindow);
            bool bIsTempTarget(false);

            if(!pPageWindow)
            {
                // create temp PageWindow
                pPageWindow = new SdrPageWindow(*this, rPaintWindow);
                bIsTempTarget = true;
            }

            // do the redraw
            pPageWindow->PrepareRedraw(rReg);
            pPageWindow->RedrawAll(pRedirector);

            // get rid of temp PageWindow
            if(bIsTempTarget)
            {
                delete pPageWindow;
                pPageWindow = nullptr;
            }
        }
    }

    // #i74769# use SdrPaintWindow directly

    void SdrPageView::setPreparedPageWindow(SdrPageWindow* pKnownTarget)
    {
        // #i72752# remember prepared SdrPageWindow
        mpPreparedPageWindow = pKnownTarget;
    }

    void SdrPageView::DrawLayer(SdrLayerID nID, OutputDevice* pGivenTarget,
            sdr::contact::ViewObjectContactRedirector* pRedirector,
            const tools::Rectangle& rRect, basegfx::B2IRectangle const*const pPageFrame)
    {
        if(GetPage())
        {
            if(pGivenTarget)
            {
                SdrPageWindow* pKnownTarget = FindPageWindow(*pGivenTarget);

                if(pKnownTarget)
                {
                    // paint known target
                    pKnownTarget->RedrawLayer(&nID, pRedirector, nullptr);
                }
                else
                {
                    // #i72752# DrawLayer() uses a OutputDevice different from BeginDrawLayer. This happens
                    // e.g. when SW paints a single text line in text edit mode. Try to use it
                    SdrPageWindow* pPreparedTarget = mpPreparedPageWindow;

                    if(pPreparedTarget)
                    {
                        // if we have a prepared target, do not use a new SdrPageWindow since this
                        // works but is expensive. Just use a temporary PaintWindow
                        SdrPaintWindow aTemporaryPaintWindow(mrView, *pGivenTarget);

                        // Copy existing paint region to use the same as prepared in BeginDrawLayer
                        SdrPaintWindow& rExistingPaintWindow = pPreparedTarget->GetPaintWindow();
                        const vcl::Region& rExistingRegion = rExistingPaintWindow.GetRedrawRegion();
                        bool bUseRect(false);
                        if (!rRect.IsEmpty())
                        {
                            vcl::Region r(rExistingRegion);
                            r.Intersect(rRect);
                            // fdo#74435: FIXME: visibility check broken if empty
                            if (!r.IsEmpty())
                                bUseRect = true;
                        }
                        if (!bUseRect)
                            aTemporaryPaintWindow.SetRedrawRegion(rExistingRegion);
                        else
                            aTemporaryPaintWindow.SetRedrawRegion(vcl::Region(rRect));
                        // patch the ExistingPageWindow
                        pPreparedTarget->patchPaintWindow(aTemporaryPaintWindow);

                        // redraw the layer
                        pPreparedTarget->RedrawLayer(&nID, pRedirector, pPageFrame);

                        // restore the ExistingPageWindow
                        pPreparedTarget->unpatchPaintWindow();
                    }
                    else
                    {
                        OSL_FAIL("SdrPageView::DrawLayer: Creating temporary SdrPageWindow (ObjectContact), this should never be needed (!)");

                        // None of the known OutputDevices is the target of this paint, use
                        // a temporary SdrPageWindow for this Redraw.
                        SdrPaintWindow aTemporaryPaintWindow(mrView, *pGivenTarget);
                        SdrPageWindow aTemporaryPageWindow(*this, aTemporaryPaintWindow);

                        // #i72752#
                        // Copy existing paint region if other PageWindows exist, this was created by
                        // PrepareRedraw() from BeginDrawLayer(). Needs to be used e.g. when suddenly SW
                        // paints into an unknown device other than the view was created for (e.g. VirtualDevice)
                        if(PageWindowCount())
                        {
                            SdrPageWindow* pExistingPageWindow = GetPageWindow(0);
                            SdrPaintWindow& rExistingPaintWindow = pExistingPageWindow->GetPaintWindow();
                            const vcl::Region& rExistingRegion = rExistingPaintWindow.GetRedrawRegion();
                            aTemporaryPaintWindow.SetRedrawRegion(rExistingRegion);
                        }

                        aTemporaryPageWindow.RedrawLayer(&nID, pRedirector, nullptr);
                    }
                }
            }
            else
            {
                // paint in all known windows
                for(sal_uInt32 a(0); a < PageWindowCount(); a++)
                {
                    SdrPageWindow* pTarget = GetPageWindow(a);
                    pTarget->RedrawLayer(&nID, pRedirector, nullptr);
                }
            }
        }
    }

    void SdrPageView::SetDesignMode( bool _bDesignMode ) const
    {
        for ( sal_uInt32 i = 0; i < PageWindowCount(); ++i )
        {
            const SdrPageWindow& rPageViewWindow = *GetPageWindow(i);
            rPageViewWindow.SetDesignMode( _bDesignMode );
        }
    }

    void SdrPageView::DrawPageViewGrid(OutputDevice& rOut, const tools::Rectangle& rRect, Color aColor)
    {
        if (GetPage()==nullptr)
            return;

        long nx1=GetView().maGridBig.Width();
        long nx2=GetView().maGridFin.Width();
        long ny1=GetView().maGridBig.Height();
        long ny2=GetView().maGridFin.Height();

        if (nx1==0) nx1=nx2;
        if (nx2==0) nx2=nx1;
        if (ny1==0) ny1=ny2;
        if (ny2==0) ny2=ny1;
        if (nx1==0) { nx1=ny1; nx2=ny2; }
        if (ny1==0) { ny1=nx1; ny2=nx2; }
        if (nx1<0) nx1=-nx1;
        if (nx2<0) nx2=-nx2;
        if (ny1<0) ny1=-ny1;
        if (ny2<0) ny2=-ny2;

        if (nx1==0)
            return;

        // no more global output size, use window size instead to decide grid sizes
        long nScreenWdt = rOut.GetOutputSizePixel().Width();

        long nMinDotPix=2;
        long nMinLinPix=4;

        if (nScreenWdt>=1600)
        {
            nMinDotPix=4;
            nMinLinPix=8;
        }
        else if (nScreenWdt>=1024)
        {
            nMinDotPix=3;
            nMinLinPix=6;
        }
        else
        { // e. g. 640x480
            nMinDotPix=2;
            nMinLinPix=4;
        }
        Size aMinDotDist(rOut.PixelToLogic(Size(nMinDotPix,nMinDotPix)));
        Size aMinLinDist(rOut.PixelToLogic(Size(nMinLinPix,nMinLinPix)));
        bool bHoriSolid=nx2<aMinDotDist.Width();
        bool bVertSolid=ny2<aMinDotDist.Height();
        // enlarge line offset (minimum 4 pixels)
        // enlarge by: *2 *5 *10 *20 *50 *100 ...
        int nTgl=0;
        long nVal0=nx1;
        while (nx1<aMinLinDist.Width())
        {
            long a=nx1;

            if (nTgl==0) nx1*=2;
            if (nTgl==1) nx1=nVal0*5; // => nx1*=2.5
            if (nTgl==2) nx1*=2;

            nVal0=a;
            nTgl++; if (nTgl>=3) nTgl=0;
        }
        nTgl=0;
        nVal0=ny1;
        while (ny1<aMinLinDist.Height())
        {
            long a=ny1;

            if (nTgl==0) ny1*=2;
            if (nTgl==1) ny1=nVal0*5; // => ny1*=2.5
            if (nTgl==2) ny1*=2;

            nVal0=a;
            nTgl++;

            if (nTgl>=3) nTgl=0;
        }

        bool bHoriFine=nx2<nx1;
        bool bVertFine=ny2<ny1;
        bool bHoriLines=bHoriSolid || bHoriFine || !bVertFine;
        bool bVertLines=bVertSolid || bVertFine;

        Color aColorMerk( rOut.GetLineColor() );
        rOut.SetLineColor( aColor );

        bool bMap0=rOut.IsMapModeEnabled();

        long nWrX=0;
        long nWrY=0;
        Point aOrg(aPgOrg);
        long x1=GetPage()->GetLeftBorder()+1+nWrX;
        long x2=GetPage()->GetWidth()-GetPage()->GetRightBorder()-1+nWrY;
        long y1=GetPage()->GetUpperBorder()+1+nWrX;
        long y2=GetPage()->GetHeight()-GetPage()->GetLowerBorder()-1+nWrY;
        const SdrPageGridFrameList* pFrames=GetPage()->GetGridFrameList(this,nullptr);

        sal_uInt16 nGridPaintCnt=1;
        if (pFrames!=nullptr) nGridPaintCnt=pFrames->GetCount();
        for (sal_uInt16 nGridPaintNum=0; nGridPaintNum<nGridPaintCnt; nGridPaintNum++) {
            if (pFrames!=nullptr) {
                const SdrPageGridFrame& rGF=(*pFrames)[nGridPaintNum];
                nWrX=rGF.GetPaperRect().Left();
                nWrY=rGF.GetPaperRect().Top();
                x1=rGF.GetUserArea().Left();
                x2=rGF.GetUserArea().Right();
                y1=rGF.GetUserArea().Top();
                y2=rGF.GetUserArea().Bottom();
                aOrg=rGF.GetUserArea().TopLeft();
                aOrg-=rGF.GetPaperRect().TopLeft();
            }
            if (!rRect.IsEmpty()) {
                Size a1PixSiz(rOut.PixelToLogic(Size(1,1)));
                long nX1Pix=a1PixSiz.Width();  // add 1 pixel of tolerance
                long nY1Pix=a1PixSiz.Height();
                if (x1<rRect.Left()  -nX1Pix) x1=rRect.Left()  -nX1Pix;
                if (x2>rRect.Right() +nX1Pix) x2=rRect.Right() +nX1Pix;
                if (y1<rRect.Top()   -nY1Pix) y1=rRect.Top()   -nY1Pix;
                if (y2>rRect.Bottom()+nY1Pix) y2=rRect.Bottom()+nY1Pix;
            }

            long xBigOrg=aOrg.X()+nWrX;
            while (xBigOrg>=x1) xBigOrg-=nx1;
            while (xBigOrg<x1) xBigOrg+=nx1;
            long xFinOrg=xBigOrg;
            while (xFinOrg>=x1) xFinOrg-=nx2;
            while (xFinOrg<x1) xFinOrg+=nx2;

            long yBigOrg=aOrg.Y()+nWrY;
            while (yBigOrg>=y1) yBigOrg-=ny1;
            while (yBigOrg<y1) yBigOrg+=ny1;
            long yFinOrg=yBigOrg;
            while (yFinOrg>=y1) yFinOrg-=ny2;
            while (yFinOrg<y1) yFinOrg+=ny2;

            if( x1 <= x2 && y1 <= y2 )
            {
                if( bHoriLines )
                {
                    DrawGridFlags nGridFlags = ( bHoriSolid ? DrawGridFlags::HorzLines : DrawGridFlags::Dots );
                    sal_uInt16 nSteps = sal_uInt16(nx1 / nx2);
                    sal_uInt32 nRestPerStepMul1000 = nSteps ? ( ((nx1 * 1000L)/ nSteps) - (nx2 * 1000L) ) : 0;
                    sal_uInt32 nStepOffset = 0;
                    sal_uInt16 nPointOffset = 0;

                    for(sal_uInt16 a=0;a<nSteps;a++)
                    {
                        // draw
                        rOut.DrawGrid(
                            tools::Rectangle( xFinOrg + (a * nx2) + nPointOffset, yBigOrg, x2, y2 ),
                            Size( nx1, ny1 ), nGridFlags );

                        // do a step
                        nStepOffset += nRestPerStepMul1000;
                        while(nStepOffset >= 1000)
                        {
                            nStepOffset -= 1000;
                            nPointOffset++;
                        }
                    }
                }

                if( bVertLines )
                {
                    DrawGridFlags nGridFlags = ( bVertSolid ? DrawGridFlags::VertLines : DrawGridFlags::Dots );
                    sal_uInt16 nSteps = sal_uInt16(ny1 / ny2);
                    sal_uInt32 nRestPerStepMul1000 = nSteps ? ( ((ny1 * 1000L)/ nSteps) - (ny2 * 1000L) ) : 0;
                    sal_uInt32 nStepOffset = 0;
                    sal_uInt16 nPointOffset = 0;

                    for(sal_uInt16 a=0;a<nSteps;a++)
                    {
                        // draw
                        rOut.DrawGrid(
                            tools::Rectangle( xBigOrg, yFinOrg + (a * ny2) + nPointOffset, x2, y2 ),
                            Size( nx1, ny1 ), nGridFlags );

                        // do a step
                        nStepOffset += nRestPerStepMul1000;
                        while(nStepOffset >= 1000)
                        {
                            nStepOffset -= 1000;
                            nPointOffset++;
                        }
                    }
                }
            }
        }

        rOut.EnableMapMode(bMap0);
        rOut.SetLineColor(aColorMerk);
    }

    void SdrPageView::AdjHdl()
    {
        GetView().AdjustMarkHdl();
    }

    void SdrPageView::SetLayer(const OUString& rName, SdrLayerIDSet& rBS, bool bJa)
    {
        if(!GetPage())
            return;

        SdrLayerID nID = GetPage()->GetLayerAdmin().GetLayerID(rName);

        if(SDRLAYER_NOTFOUND != nID)
            rBS.Set(nID, bJa);
    }

    bool SdrPageView::IsLayer(const OUString& rName, const SdrLayerIDSet& rBS) const
    {
        if(!GetPage())
            return false;

        bool bRet(false);

        if (!rName.isEmpty())
        {
            SdrLayerID nId = GetPage()->GetLayerAdmin().GetLayerID(rName);

            if(SDRLAYER_NOTFOUND != nId)
            {
                bRet = rBS.IsSet(nId);
            }
        }

        return bRet;
    }

    bool SdrPageView::IsObjMarkable(SdrObject const * pObj) const
    {
        if (!pObj)
            return false;
        if (pObj->IsMarkProtect())
            return false;    // excluded from selection?
        if (!pObj->IsVisible())
            return false;    // only visible are selectable
        if (!pObj->IsInserted())
            return false;    // Obj deleted?
        if (auto pObjGroup = dynamic_cast<const SdrObjGroup*>(pObj))
        {
            // If object is a Group object, visibility may depend on
            // multiple layers. If one object is markable, Group is markable.
            SdrObjList* pObjList = pObjGroup->GetSubList();

            if (pObjList && pObjList->GetObjCount())
            {
                for (size_t a = 0; a < pObjList->GetObjCount(); ++a)
                {
                    SdrObject* pCandidate = pObjList->GetObj(a);
                    // call recursively
                    if (IsObjMarkable(pCandidate))
                        return true;
                }
                return false;
            }
            else
            {
                // #i43302#
                // Allow empty groups to be selected to be able to delete them
                return true;
            }
        }
        if (!pObj->Is3DObj() && pObj->getSdrPageFromSdrObject() != GetPage())
        {
            // Obj suddenly in different Page
            return false;
        }

        // the layer has to be visible and must not be locked
        SdrLayerID nL = pObj->GetLayer();
        if (!aLayerVisi.IsSet(nL))
            return false;
        if (aLayerLock.IsSet(nL))
            return false;
        return true;
    }

    void SdrPageView::SetPageOrigin(const Point& rOrg)
    {
        if (rOrg!=aPgOrg) {
            aPgOrg=rOrg;
            if (GetView().IsGridVisible()) {
                InvalidateAllWin();
            }
        }
    }

    void SdrPageView::ImpInvalidateHelpLineArea(sal_uInt16 nNum) const
    {
        if (GetView().IsHlplVisible() && nNum<aHelpLines.GetCount()) {
            const SdrHelpLine& rHL=aHelpLines[nNum];

            for(sal_uInt32 a(0); a < GetView().PaintWindowCount(); a++)
            {
                SdrPaintWindow* pCandidate = GetView().GetPaintWindow(a);

                if(pCandidate->OutputToWindow())
                {
                    OutputDevice& rOutDev = pCandidate->GetOutputDevice();
                    tools::Rectangle aR(rHL.GetBoundRect(rOutDev));
                    Size aSiz(rOutDev.PixelToLogic(Size(1,1)));
                    aR.AdjustLeft( -(aSiz.Width()) );
                    aR.AdjustRight(aSiz.Width() );
                    aR.AdjustTop( -(aSiz.Height()) );
                    aR.AdjustBottom(aSiz.Height() );
                    const_cast<SdrView&>(GetView()).InvalidateOneWin(static_cast<vcl::Window&>(rOutDev), aR);
                }
            }
        }
    }

    void SdrPageView::SetHelpLines(const SdrHelpLineList& rHLL)
    {
        aHelpLines=rHLL;
        InvalidateAllWin();
    }

    void SdrPageView::SetHelpLine(sal_uInt16 nNum, const SdrHelpLine& rNewHelpLine)
    {
        if (nNum<aHelpLines.GetCount() && aHelpLines[nNum]!=rNewHelpLine) {
            bool bNeedRedraw = true;
            if (aHelpLines[nNum].GetKind()==rNewHelpLine.GetKind()) {
                switch (rNewHelpLine.GetKind()) {
                    case SdrHelpLineKind::Vertical  : if (aHelpLines[nNum].GetPos().X()==rNewHelpLine.GetPos().X()) bNeedRedraw = false; break;
                    case SdrHelpLineKind::Horizontal: if (aHelpLines[nNum].GetPos().Y()==rNewHelpLine.GetPos().Y()) bNeedRedraw = false; break;
                    default: break;
                } // switch
            }
            if (bNeedRedraw) ImpInvalidateHelpLineArea(nNum);
            aHelpLines[nNum]=rNewHelpLine;
            if (bNeedRedraw) ImpInvalidateHelpLineArea(nNum);
        }
    }

    void SdrPageView::DeleteHelpLine(sal_uInt16 nNum)
    {
        if (nNum<aHelpLines.GetCount()) {
            ImpInvalidateHelpLineArea(nNum);
            aHelpLines.Delete(nNum);
        }
    }

    void SdrPageView::InsertHelpLine(const SdrHelpLine& rHL)
    {
        sal_uInt16 nNum = aHelpLines.GetCount();
        aHelpLines.Insert(rHL,nNum);
        if (GetView().IsHlplVisible())
            ImpInvalidateHelpLineArea(nNum);
    }

    // set current group and list
    void SdrPageView::SetCurrentGroupAndList(SdrObject* pNewGroup, SdrObjList* pNewList)
    {
        if(pCurrentGroup != pNewGroup)
        {
            pCurrentGroup = pNewGroup;
        }
        if(pCurrentList != pNewList)
        {
            pCurrentList = pNewList;
        }
    }

    bool SdrPageView::EnterGroup(SdrObject* pObj)
    {
        bool bRet(false);

        if(pObj && pObj->IsGroupObject())
        {
            bool bGlueInvalidate(GetView().ImpIsGlueVisible());

            if(bGlueInvalidate)
            {
                GetView().GlueInvalidate();
            }

            // deselect all
            GetView().UnmarkAll();

            // set current group and list
            SdrObjList* pNewObjList = pObj->GetSubList();
            SetCurrentGroupAndList(pObj, pNewObjList);

            // select contained object if only one object is contained,
            // else select nothing and let the user decide what to do next
            if(pNewObjList && pNewObjList->GetObjCount() == 1)
            {
                SdrObject* pFirstObject = pNewObjList->GetObj(0);

                if(GetView().GetSdrPageView())
                {
                    GetView().MarkObj(pFirstObject, GetView().GetSdrPageView());
                }
            }

            // build new handles
            GetView().AdjustMarkHdl();

            // invalidate only when view wants to visualize group entering
            InvalidateAllWin();

            if (bGlueInvalidate)
            {
                GetView().GlueInvalidate();
            }

            bRet = true;
        }

        return bRet;
    }

    void SdrPageView::LeaveOneGroup()
    {
        if(!GetCurrentGroup())
            return;

        bool bGlueInvalidate = GetView().ImpIsGlueVisible();

        if(bGlueInvalidate)
            GetView().GlueInvalidate();

        SdrObject* pLastGroup = GetCurrentGroup();
        SdrObject* pParentGroup = GetCurrentGroup()->getParentSdrObjectFromSdrObject();
        SdrObjList* pParentList = GetPage();

        if(pParentGroup)
            pParentList = pParentGroup->GetSubList();

        // deselect everything
        GetView().UnmarkAll();

        // allocations, pCurrentGroup and pCurrentList need to be set
        SetCurrentGroupAndList(pParentGroup, pParentList);

        // select the group we just left
        if(pLastGroup)
            if(GetView().GetSdrPageView())
                GetView().MarkObj(pLastGroup, GetView().GetSdrPageView());

        GetView().AdjustMarkHdl();

        // invalidate only if view wants to visualize group entering
        InvalidateAllWin();

        if(bGlueInvalidate)
            GetView().GlueInvalidate();
    }

    void SdrPageView::LeaveAllGroup()
    {
        if(GetCurrentGroup())
        {
            bool bGlueInvalidate = GetView().ImpIsGlueVisible();

            if(bGlueInvalidate)
                GetView().GlueInvalidate();

            SdrObject* pLastGroup = GetCurrentGroup();

            // deselect everything
            GetView().UnmarkAll();

            // allocations, pCurrentGroup and pCurrentList always need to be set
            SetCurrentGroupAndList(nullptr, GetPage());

            // find and select uppermost group
            if(pLastGroup)
            {
                while(pLastGroup->getParentSdrObjectFromSdrObject())
                    pLastGroup = pLastGroup->getParentSdrObjectFromSdrObject();

                if(GetView().GetSdrPageView())
                    GetView().MarkObj(pLastGroup, GetView().GetSdrPageView());
            }

            GetView().AdjustMarkHdl();

            // invalidate only when view wants to visualize group entering
            InvalidateAllWin();

            if(bGlueInvalidate)
                GetView().GlueInvalidate();
        }
    }

    sal_uInt16 SdrPageView::GetEnteredLevel() const
    {
        sal_uInt16 nCount=0;
        SdrObject* pGrp=GetCurrentGroup();
        while (pGrp!=nullptr) {
            nCount++;
            pGrp=pGrp->getParentSdrObjectFromSdrObject();
        }
        return nCount;
    }

    void SdrPageView::CheckCurrentGroup()
    {
        SdrObject* pGrp(GetCurrentGroup());

        while(nullptr != pGrp &&
            (!pGrp->IsInserted() || nullptr == pGrp->getParentSdrObjListFromSdrObject() || nullptr == pGrp->getSdrPageFromSdrObject()))
        {
            // anything outside of the borders?
            pGrp = pGrp->getParentSdrObjectFromSdrObject();
        }

        if(pGrp != GetCurrentGroup())
        {
            if(nullptr != pGrp)
            {
                EnterGroup(pGrp);
            }
            else
            {
                LeaveAllGroup();
            }
        }
    }

    // Set background color for svx at SdrPageViews
    void SdrPageView::SetApplicationBackgroundColor(Color aBackgroundColor)
    {
        maBackgroundColor = aBackgroundColor;
    }

    // Set document color for svx at SdrPageViews
    void SdrPageView::SetApplicationDocumentColor(Color aDocumentColor)
    {
        maDocumentColor = aDocumentColor;
    }

    /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

↑ V773 Visibility scope of the 'pPageWindow' pointer was exited without releasing the memory. A memory leak is possible.

↑ V547 Expression 'pLastGroup' is always true.

↑ V547 Expression 'pLastGroup' is always true.