path: root/svx/source/svdraw/svddrgv.cxx

/* -*- 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 <osl/diagnose.h>
#include <tools/debug.hxx>
#include <svx/svddrgv.hxx>
#include <svx/svdview.hxx>
#include <svx/svdundo.hxx>
#include <svx/svdocapt.hxx>
#include <svx/svdpagv.hxx>
#include <svx/svdopath.hxx>
#include <svx/svdoedge.hxx>
#include <svx/strings.hrc>
#include <svx/dialmgr.hxx>
#include "svddrgm1.hxx"
#include <svx/obj3d.hxx>
#include <svx/svdoashp.hxx>
#include <svx/sdrpaintwindow.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <svtools/optionsdrawinglayer.hxx>
#include <svx/sdr/overlay/overlaymanager.hxx>
#include <svx/sdrpagewindow.hxx>
#include <unotools/configmgr.hxx>
#include <comphelper/lok.hxx>

using namespace sdr;

SdrDragView::SdrDragView(SdrModel& rSdrModel, OutputDevice* pOut)
    : SdrExchangeView(rSdrModel, pOut)
    , mpDragHdl(nullptr)
    , mpInsPointUndo(nullptr)
    , meDragHdl(SdrHdlKind::Move)
    , mbFramDrag(false)
    , mbMarkedHitMovesAlways(false)
    , mbDragLimit(false)
    , mbDragHdl(false)
    , mbDragStripes(false)
    , mbSolidDragging(utl::ConfigManager::IsFuzzing() || SvtOptionsDrawinglayer::IsSolidDragCreate())
    , mbResizeAtCenter(false)
    , mbCrookAtCenter(false)
    , mbDragWithCopy(false)
    , mbInsGluePoint(false)
    , mbInsObjPointMode(false)
    , mbInsGluePointMode(false)
    , mbNoDragXorPolys(false)
{
    meDragMode = SdrDragMode::Move;
}

SdrDragView::~SdrDragView()
{
}

bool SdrDragView::IsAction() const
{
    return (mpCurrentSdrDragMethod || SdrExchangeView::IsAction());
}

void SdrDragView::MovAction(const Point& rPnt)
{
    SdrExchangeView::MovAction(rPnt);
    if (mpCurrentSdrDragMethod)
    {
        MovDragObj(rPnt);
    }
}

void SdrDragView::EndAction()
{
    if (mpCurrentSdrDragMethod)
    {
        EndDragObj();
    }
    SdrExchangeView::EndAction();
}

void SdrDragView::BckAction()
{
    SdrExchangeView::BckAction();
    BrkDragObj();
}

void SdrDragView::BrkAction()
{
    SdrExchangeView::BrkAction();
    BrkDragObj();
}

void SdrDragView::TakeActionRect(tools::Rectangle& rRect) const
{
    if (mpCurrentSdrDragMethod)
    {
        rRect=maDragStat.GetActionRect();
        if (rRect.IsEmpty())
        {
            SdrPageView* pPV = GetSdrPageView();

            if(pPV&& pPV->HasMarkedObjPageView())
            {
                // #i95646# is this used..?
                const basegfx::B2DRange aBoundRange(mpCurrentSdrDragMethod->getCurrentRange());
                if (aBoundRange.isEmpty())
                {
                    rRect.SetEmpty();
                }
                else
                {
                    rRect = tools::Rectangle(
                        basegfx::fround(aBoundRange.getMinX()), basegfx::fround(aBoundRange.getMinY()),
                        basegfx::fround(aBoundRange.getMaxX()), basegfx::fround(aBoundRange.getMaxY()));
                }
            }
        }
        if (rRect.IsEmpty())
        {
            rRect=tools::Rectangle(maDragStat.GetNow(),maDragStat.GetNow());
        }
    }
    else
    {
        SdrExchangeView::TakeActionRect(rRect);
    }
}

bool SdrDragView::TakeDragObjAnchorPos(Point& rPos, bool bTR ) const
{
    tools::Rectangle aR;
    TakeActionRect(aR);
    rPos = bTR ? aR.TopRight() : aR.TopLeft();
    if (GetMarkedObjectCount()==1 && IsDragObj() && // only on single selection
        !IsDraggingPoints() && !IsDraggingGluePoints() && // not when moving points
        dynamic_cast<const SdrDragMovHdl*>( mpCurrentSdrDragMethod.get() ) ==  nullptr) // not when moving handles
    {
        SdrObject* pObj=GetMarkedObjectByIndex(0);
        if (auto pCaptionObj = dynamic_cast<SdrCaptionObj*>(pObj))
        {
            Point aPt(pCaptionObj->GetTailPos());
            bool bTail=meDragHdl==SdrHdlKind::Poly; // drag tail
            bool bOwn=dynamic_cast<const SdrDragObjOwn*>( mpCurrentSdrDragMethod.get() ) !=  nullptr; // specific to object
            if (!bTail)
            { // for bTail, TakeActionRect already does the right thing
                if (bOwn)
                { // bOwn may be MoveTextFrame, ResizeTextFrame, but may not (any more) be DragTail
                    rPos=aPt;
                }
                else
                {
                    // drag the whole Object (Move, Resize, ...)
                    const basegfx::B2DPoint aTransformed(mpCurrentSdrDragMethod->getCurrentTransformation() * basegfx::B2DPoint(aPt.X(), aPt.Y()));
                    rPos.setX( basegfx::fround(aTransformed.getX()) );
                    rPos.setY( basegfx::fround(aTransformed.getY()) );
                }
            }
        }
        return true;
    }
    return false;
}


bool SdrDragView::TakeDragLimit(SdrDragMode /*eMode*/, tools::Rectangle& /*rRect*/) const
{
    return false;
}

bool SdrDragView::BegDragObj(const Point& rPnt, OutputDevice* pOut, SdrHdl* pHdl, short nMinMov, SdrDragMethod* _pForcedMeth)
{
    BrkAction();

    // so we don't leak the object on early return
    std::unique_ptr<SdrDragMethod> pForcedMeth(_pForcedMeth);

    bool bRet=false;
    {
        SetDragWithCopy(false);
        //TODO: aAni.Reset();
        mpCurrentSdrDragMethod=nullptr;
        SdrDragMode eTmpMode=meDragMode;
        if (eTmpMode==SdrDragMode::Move && pHdl!=nullptr && pHdl->GetKind()!=SdrHdlKind::Move) {
            eTmpMode=SdrDragMode::Resize;
        }
        mbDragLimit=TakeDragLimit(eTmpMode,maDragLimit);
        mbFramDrag=ImpIsFrameHandles();
        if (!mbFramDrag &&
            (mpMarkedObj==nullptr || !mpMarkedObj->hasSpecialDrag()) &&
            (pHdl==nullptr || pHdl->GetObj()==nullptr)) {
            mbFramDrag=true;
        }

        Point aPnt(rPnt);
        basegfx::B2DVector aGridOffset(0.0, 0.0);

        // Coordinate maybe affected by GridOffset, so we may need to
        // adapt to Model-coordinates here
        if((comphelper::LibreOfficeKit::isActive() && mpMarkedObj
            && getPossibleGridOffsetForSdrObject(aGridOffset, GetMarkedObjectByIndex(0), GetSdrPageView()))
            || (getPossibleGridOffsetForPosition(
            aGridOffset,
            basegfx::B2DPoint(aPnt.X(), aPnt.Y()),
            GetSdrPageView())))
        {
            aPnt.AdjustX(basegfx::fround(-aGridOffset.getX()));
            aPnt.AdjustY(basegfx::fround(-aGridOffset.getY()));
        }

        if(pHdl == nullptr
            || pHdl->GetKind() == SdrHdlKind::Move
            || pHdl->GetKind() == SdrHdlKind::MirrorAxis
            || pHdl->GetKind() == SdrHdlKind::Transparence
            || pHdl->GetKind() == SdrHdlKind::Gradient)
        {
            maDragStat.Reset(aPnt);
        }
        else
        {
            maDragStat.Reset(pHdl->GetPos());
        }

        maDragStat.SetView(static_cast<SdrView*>(this));
        maDragStat.SetPageView(mpMarkedPV);  // <<-- DragPV has to go here!!!
        maDragStat.SetMinMove(ImpGetMinMovLogic(nMinMov,pOut));
        maDragStat.SetHdl(pHdl);
        maDragStat.NextPoint();
        mpDragWin=pOut;
        mpDragHdl=pHdl;
        meDragHdl= pHdl==nullptr ? SdrHdlKind::Move : pHdl->GetKind();
        mbDragHdl=meDragHdl==SdrHdlKind::Ref1 || meDragHdl==SdrHdlKind::Ref2 || meDragHdl==SdrHdlKind::MirrorAxis;

        // Expand test for SdrHdlKind::Anchor_TR
        bool bNotDraggable = (SdrHdlKind::Anchor == meDragHdl || SdrHdlKind::Anchor_TR == meDragHdl);

        if(pHdl && (pHdl->GetKind() == SdrHdlKind::SmartTag) && pForcedMeth )
        {
            // just use the forced method for smart tags
        }
        else if(mbDragHdl)
        {
            mpCurrentSdrDragMethod.reset(new SdrDragMovHdl(*this));
        }
        else if(!bNotDraggable)
        {
            switch (meDragMode)
            {
                case SdrDragMode::Rotate: case SdrDragMode::Shear:
                {
                    switch (meDragHdl)
                    {
                        case SdrHdlKind::Left:  case SdrHdlKind::Right:
                        case SdrHdlKind::Upper: case SdrHdlKind::Lower:
                        {
                            // are 3D objects selected?
                            bool b3DObjSelected = false;
                            for(size_t a=0; !b3DObjSelected && a<GetMarkedObjectCount(); ++a)
                            {
                                SdrObject* pObj = GetMarkedObjectByIndex(a);
                                if(dynamic_cast< const E3dObject* >(pObj))
                                    b3DObjSelected = true;
                            }
                            // If yes, allow shear even when !IsShearAllowed,
                            // because 3D objects are limited rotations
                            if (!b3DObjSelected && !IsShearAllowed())
                                return false;
                            mpCurrentSdrDragMethod.reset(new SdrDragShear(*this,meDragMode==SdrDragMode::Rotate));
                        } break;
                        case SdrHdlKind::UpperLeft: case SdrHdlKind::UpperRight:
                        case SdrHdlKind::LowerLeft: case SdrHdlKind::LowerRight:
                        {
                            if (meDragMode==SdrDragMode::Shear)
                            {
                                if (!IsDistortAllowed(true) && !IsDistortAllowed()) return false;
                                mpCurrentSdrDragMethod.reset(new SdrDragDistort(*this));
                            }
                            else
                            {
                                if (!IsRotateAllowed(true)) return false;
                                mpCurrentSdrDragMethod.reset(new SdrDragRotate(*this));
                            }
                        } break;
                        default:
                        {
                            if (IsMarkedHitMovesAlways() && meDragHdl==SdrHdlKind::Move)
                            { // SdrHdlKind::Move is true, even if Obj is hit directly
                                if (!IsMoveAllowed()) return false;
                                mpCurrentSdrDragMethod.reset(new SdrDragMove(*this));
                            }
                            else
                            {
                                if (!IsRotateAllowed(true)) return false;
                                mpCurrentSdrDragMethod.reset(new SdrDragRotate(*this));
                            }
                        }
                    }
                } break;
                case SdrDragMode::Mirror:
                {
                    if (meDragHdl==SdrHdlKind::Move && IsMarkedHitMovesAlways())
                    {
                        if (!IsMoveAllowed()) return false;
                        mpCurrentSdrDragMethod.reset(new SdrDragMove(*this));
                    }
                    else
                    {
                        if (!IsMirrorAllowed(true,true)) return false;
                        mpCurrentSdrDragMethod.reset(new SdrDragMirror(*this));
                    }
                } break;

                case SdrDragMode::Crop:
                {
                    if (meDragHdl==SdrHdlKind::Move && IsMarkedHitMovesAlways())
                    {
                        if (!IsMoveAllowed())
                            return false;
                        mpCurrentSdrDragMethod.reset(new SdrDragMove(*this));
                    }
                    else
                    {
                        if (!IsCropAllowed())
                            return false;
                        mpCurrentSdrDragMethod.reset(new SdrDragCrop(*this));
                    }
                }
                break;

                case SdrDragMode::Transparence:
                {
                    if(meDragHdl == SdrHdlKind::Move && IsMarkedHitMovesAlways())
                    {
                        if(!IsMoveAllowed())
                            return false;
                        mpCurrentSdrDragMethod.reset(new SdrDragMove(*this));
                    }
                    else
                    {
                        if(!IsTransparenceAllowed())
                            return false;

                        mpCurrentSdrDragMethod.reset(new SdrDragGradient(*this, false));
                    }
                    break;
                }
                case SdrDragMode::Gradient:
                {
                    if(meDragHdl == SdrHdlKind::Move && IsMarkedHitMovesAlways())
                    {
                        if(!IsMoveAllowed())
                            return false;
                        mpCurrentSdrDragMethod.reset(new SdrDragMove(*this));
                    }
                    else
                    {
                        if(!IsGradientAllowed())
                            return false;

                        mpCurrentSdrDragMethod.reset(new SdrDragGradient(*this));
                    }
                    break;
                }

                case SdrDragMode::Crook :
                {
                    if (meDragHdl==SdrHdlKind::Move && IsMarkedHitMovesAlways())
                    {
                        if (!IsMoveAllowed()) return false;
                        mpCurrentSdrDragMethod.reset( new SdrDragMove(*this) );
                    }
                    else
                    {
                        if (!IsCrookAllowed(true) && !IsCrookAllowed()) return false;
                        mpCurrentSdrDragMethod.reset( new SdrDragCrook(*this) );
                    }
                } break;

                default:
                {
                    // SdrDragMode::Move
                    if((meDragHdl == SdrHdlKind::Move) && !IsMoveAllowed())
                    {
                        return false;
                    }
                    else if(meDragHdl == SdrHdlKind::Glue)
                    {
                        mpCurrentSdrDragMethod.reset( new SdrDragMove(*this) );
                    }
                    else
                    {
                        if(mbFramDrag)
                        {
                            if(meDragHdl == SdrHdlKind::Move)
                            {
                                mpCurrentSdrDragMethod.reset( new SdrDragMove(*this) );
                            }
                            else
                            {
                                if(!IsResizeAllowed(true))
                                {
                                    return false;
                                }

                                bool bSingleTextObjMark = false;    // SJ: #i100490#
                                if ( GetMarkedObjectCount() == 1 )
                                {
                                    mpMarkedObj=GetMarkedObjectByIndex(0);
                                    if ( mpMarkedObj &&
                                        dynamic_cast<const SdrTextObj*>( mpMarkedObj) !=  nullptr &&
                                        static_cast<SdrTextObj*>(mpMarkedObj)->IsTextFrame() )
                                        bSingleTextObjMark = true;
                                }
                                if ( bSingleTextObjMark )
                                    mpCurrentSdrDragMethod.reset( new SdrDragObjOwn(*this) );
                                else
                                    mpCurrentSdrDragMethod.reset( new SdrDragResize(*this) );
                            }
                        }
                        else
                        {
                            if(SdrHdlKind::Move == meDragHdl)
                            {
                                const bool bCustomShapeSelected(1 == GetMarkedObjectCount() && dynamic_cast<const SdrObjCustomShape*>(GetMarkedObjectByIndex(0)) != nullptr);

                                if(bCustomShapeSelected)
                                {
                                    mpCurrentSdrDragMethod.reset( new SdrDragMove( *this ) );
                                }
                            }
                            else if(SdrHdlKind::Poly == meDragHdl)
                            {
                                const bool bConnectorSelected(1 == GetMarkedObjectCount() && dynamic_cast<const SdrEdgeObj*>(GetMarkedObjectByIndex(0)) != nullptr);

                                if(bConnectorSelected)
                                {
                                    // #i97784#
                                    // fallback to old behaviour for connectors (see
                                    // text in task description for more details)
                                }
                                else if(!IsMoveAllowed() || !IsResizeAllowed())
                                {
                                    // #i77187#
                                    // do not allow move of polygon points if object is move or size protected
                                    return false;
                                }
                            }

                            if(!mpCurrentSdrDragMethod)
                            {
                                // fallback to DragSpecial if no interaction defined
                                mpCurrentSdrDragMethod.reset( new SdrDragObjOwn(*this) );
                            }
                        }
                    }
                }
            }
        }
        if (pForcedMeth)
        {
            mpCurrentSdrDragMethod = std::move(pForcedMeth);
        }
        maDragStat.SetDragMethod(mpCurrentSdrDragMethod.get());
        if (mpCurrentSdrDragMethod)
        {
            bRet = mpCurrentSdrDragMethod->BeginSdrDrag();
            if (!bRet)
            {
                if (pHdl==nullptr && dynamic_cast< const SdrDragObjOwn* >(mpCurrentSdrDragMethod.get()) !=  nullptr)
                {
                    // Obj may not Move SpecialDrag, so try with MoveFrameDrag
                    mpCurrentSdrDragMethod.reset();

                    if (!IsMoveAllowed())
                        return false;

                    mbFramDrag=true;
                    mpCurrentSdrDragMethod.reset( new SdrDragMove(*this) );
                    maDragStat.SetDragMethod(mpCurrentSdrDragMethod.get());
                    bRet = mpCurrentSdrDragMethod->BeginSdrDrag();
                }
            }
            if (!bRet)
            {
                mpCurrentSdrDragMethod.reset();
                maDragStat.SetDragMethod(mpCurrentSdrDragMethod.get());
            }
        }
    }

    return bRet;
}

void SdrDragView::MovDragObj(const Point& rPnt)
{
    if (!mpCurrentSdrDragMethod)
        return;

    Point aPnt(rPnt);
    basegfx::B2DVector aGridOffset(0.0, 0.0);

    // Coordinate maybe affected by GridOffset, so we may need to
    // adapt to Model-coordinates here
    if((comphelper::LibreOfficeKit::isActive() && mpMarkedObj
        && getPossibleGridOffsetForSdrObject(aGridOffset, GetMarkedObjectByIndex(0), GetSdrPageView()))
        || (getPossibleGridOffsetForPosition(
        aGridOffset,
        basegfx::B2DPoint(aPnt.X(), aPnt.Y()),
        GetSdrPageView())))
    {
        aPnt.AdjustX(basegfx::fround(-aGridOffset.getX()));
        aPnt.AdjustY(basegfx::fround(-aGridOffset.getY()));
    }

    ImpLimitToWorkArea(aPnt);
    mpCurrentSdrDragMethod->MoveSdrDrag(aPnt); // this call already makes a Hide()/Show combination
}

bool SdrDragView::EndDragObj(bool bCopy)
{
    bool bRet(false);

    // #i73341# If inserting GluePoint, do not insist on last points being different
    if(mpCurrentSdrDragMethod && maDragStat.IsMinMoved() && (IsInsertGluePoint() || maDragStat.GetNow() != maDragStat.GetPrev()))
    {
        sal_Int32 nSavedHdlCount=0;

        if (bEliminatePolyPoints)
        {
            nSavedHdlCount=GetMarkablePointCount();
        }

        const bool bUndo = IsUndoEnabled();
        if (IsInsertGluePoint() && bUndo)
        {
            BegUndo(maInsPointUndoStr);
            AddUndo(std::unique_ptr<SdrUndoAction>(mpInsPointUndo));
        }

        bRet = mpCurrentSdrDragMethod->EndSdrDrag(bCopy);

        if( IsInsertGluePoint() && bUndo)
            EndUndo();

        mpCurrentSdrDragMethod.reset();

        if (bEliminatePolyPoints)
        {
            if (nSavedHdlCount!=GetMarkablePointCount())
            {
                UnmarkAllPoints();
            }
        }

        if (mbInsPolyPoint)
        {
            SetMarkHandles(nullptr);
            mbInsPolyPoint=false;
            if( bUndo )
            {
                BegUndo(maInsPointUndoStr);
                AddUndo(std::unique_ptr<SdrUndoAction>(mpInsPointUndo));
                EndUndo();
            }
        }

        meDragHdl=SdrHdlKind::Move;
        mpDragHdl=nullptr;

        if (!mbSomeObjChgdFlag)
        {
            // Obj did not broadcast (e. g. Writer FlyFrames)
            if(!mbDragHdl)
            {
                AdjustMarkHdl();
            }
        }
    }
    else
    {
        BrkDragObj();
    }

    mbInsPolyPoint=false;
    SetInsertGluePoint(false);

    return bRet;
}

void SdrDragView::BrkDragObj()
{
    if (!mpCurrentSdrDragMethod)
        return;

    mpCurrentSdrDragMethod->CancelSdrDrag();

    mpCurrentSdrDragMethod.reset();

    if (mbInsPolyPoint)
    {
        mpInsPointUndo->Undo(); // delete inserted point again
        delete mpInsPointUndo;
        mpInsPointUndo=nullptr;
        SetMarkHandles(nullptr);
        mbInsPolyPoint=false;
    }

    if (IsInsertGluePoint())
    {
        mpInsPointUndo->Undo(); // delete inserted gluepoint again
        delete mpInsPointUndo;
        mpInsPointUndo=nullptr;
        SetInsertGluePoint(false);
    }

    meDragHdl=SdrHdlKind::Move;
    mpDragHdl=nullptr;
}

bool SdrDragView::IsInsObjPointPossible() const
{
    return mpMarkedObj!=nullptr && mpMarkedObj->IsPolyObj();
}

bool SdrDragView::ImpBegInsObjPoint(bool bIdxZwang, const Point& rPnt, bool bNewObj, OutputDevice* pOut)
{
    bool bRet(false);

    if(auto pMarkedPath = dynamic_cast<SdrPathObj*>( mpMarkedObj))
    {
        BrkAction();
        mpInsPointUndo = dynamic_cast< SdrUndoGeoObj* >( GetModel()->GetSdrUndoFactory().CreateUndoGeoObject(*mpMarkedObj).release() );
        DBG_ASSERT( mpInsPointUndo, "svx::SdrDragView::BegInsObjPoint(), could not create correct undo object!" );

        OUString aStr(SvxResId(STR_DragInsertPoint));

        maInsPointUndoStr = aStr.replaceFirst("%1", mpMarkedObj->TakeObjNameSingul() );

        Point aPt(rPnt);

        if(bNewObj)
            aPt = GetSnapPos(aPt,mpMarkedPV);

        bool bClosed0 = pMarkedPath->IsClosedObj();

        const sal_uInt32 nInsPointNum { bIdxZwang
            ? pMarkedPath->NbcInsPoint(aPt, bNewObj)
            : pMarkedPath->NbcInsPointOld(aPt, bNewObj)
        };

        if(bClosed0 != pMarkedPath->IsClosedObj())
        {
            // Obj was closed implicitly
            // object changed
            pMarkedPath->SetChanged();
            pMarkedPath->BroadcastObjectChange();
        }

        if (nInsPointNum != SAL_MAX_UINT32)
        {
            mbInsPolyPoint = true;
            UnmarkAllPoints();
            AdjustMarkHdl();

            bRet = BegDragObj(rPnt, pOut, maHdlList.GetHdl(nInsPointNum), 0);

            if (bRet)
            {
                maDragStat.SetMinMoved();
                MovDragObj(rPnt);
            }
        }
        else
        {
            delete mpInsPointUndo;
            mpInsPointUndo = nullptr;
        }
    }

    return bRet;
}

bool SdrDragView::EndInsObjPoint(SdrCreateCmd eCmd)
{
    if(IsInsObjPoint())
    {
        Point aPnt(maDragStat.GetNow());
        bool bOk=EndDragObj();
        if (bOk && eCmd!=SdrCreateCmd::ForceEnd)
        {
            // Ret=True means: Action is over.
            bOk = ! ImpBegInsObjPoint(true, aPnt, eCmd == SdrCreateCmd::NextObject, mpDragWin);
        }

        return bOk;
    } else return false;
}

bool SdrDragView::IsInsGluePointPossible() const
{
    bool bRet=false;
    if (IsInsGluePointMode() && AreObjectsMarked())
    {
        if (GetMarkedObjectCount()==1)
        {
            // return sal_False, if only 1 object which is a connector.
            const SdrObject* pObj=GetMarkedObjectByIndex(0);
            if (dynamic_cast<const SdrEdgeObj *>(pObj) == nullptr)
            {
               bRet=true;
            }
        }
        else
        {
            bRet=true;
        }
    }
    return bRet;
}

bool SdrDragView::BegInsGluePoint(const Point& rPnt)
{
    bool bRet=false;
    SdrObject* pObj;
    SdrPageView* pPV;
    if (PickMarkedObj(rPnt,pObj,pPV,SdrSearchOptions::PASS2BOUND))
    {
        BrkAction();
        UnmarkAllGluePoints();
        mpInsPointUndo= dynamic_cast< SdrUndoGeoObj* >( GetModel()->GetSdrUndoFactory().CreateUndoGeoObject(*pObj).release() );
        DBG_ASSERT( mpInsPointUndo, "svx::SdrDragView::BegInsObjPoint(), could not create correct undo object!" );
        OUString aStr(SvxResId(STR_DragInsertGluePoint));

        maInsPointUndoStr = aStr.replaceFirst("%1", pObj->TakeObjNameSingul() );

        SdrGluePointList* pGPL=pObj->ForceGluePointList();
        if (pGPL!=nullptr)
        {
            sal_uInt16 nGlueIdx=pGPL->Insert(SdrGluePoint());
            SdrGluePoint& rGP=(*pGPL)[nGlueIdx];
            sal_uInt16 nGlueId=rGP.GetId();
            rGP.SetAbsolutePos(rPnt,*pObj);

            SdrHdl* pHdl=nullptr;
            if (MarkGluePoint(pObj,nGlueId,false))
            {
                pHdl=GetGluePointHdl(pObj,nGlueId);
            }
            if (pHdl!=nullptr && pHdl->GetKind()==SdrHdlKind::Glue && pHdl->GetObj()==pObj && pHdl->GetObjHdlNum()==nGlueId)
            {
                SetInsertGluePoint(true);
                bRet=BegDragObj(rPnt,nullptr,pHdl,0);
                if (bRet)
                {
                    maDragStat.SetMinMoved();
                    MovDragObj(rPnt);
                }
                else
                {
                    SetInsertGluePoint(false);
                    delete mpInsPointUndo;
                    mpInsPointUndo=nullptr;
                }
            }
            else
            {
                OSL_FAIL("BegInsGluePoint(): GluePoint handle not found.");
            }
        }
        else
        {
            // no gluepoints possible for this object (e. g. Edge)
            SetInsertGluePoint(false);
            delete mpInsPointUndo;
            mpInsPointUndo=nullptr;
        }
    }

    return bRet;
}

void SdrDragView::ShowDragObj()
{
    if(!mpCurrentSdrDragMethod || maDragStat.IsShown())
        return;

    // Changed for the GridOffset stuff: No longer iterate over
    // SdrPaintWindow(s), but now over SdrPageWindow(s), so doing the
    // same as the SdrHdl visualizations (see ::CreateB2dIAObject) do.
    // This is needed to get access to an ObjectContact which is needed
    // to evtl. process that GridOffset in CreateOverlayGeometry
    SdrPageView* pPageView(GetSdrPageView());

    if(nullptr != pPageView)
    {
        for(sal_uInt32 a(0); a < pPageView->PageWindowCount(); a++)
        {
            const SdrPageWindow& rPageWindow(*pPageView->GetPageWindow(a));
            const SdrPaintWindow& rPaintWindow(rPageWindow.GetPaintWindow());

            if(rPaintWindow.OutputToWindow())
            {
                const rtl::Reference<sdr::overlay::OverlayManager>& xOverlayManager(
                    rPaintWindow.GetOverlayManager());

                if(xOverlayManager.is())
                {
                    mpCurrentSdrDragMethod->CreateOverlayGeometry(
                        *xOverlayManager,
                        rPageWindow.GetObjectContact());

                    // #i101679# Force changed overlay to be shown
                    xOverlayManager->flush();
                }
            }
        }
    }

    maDragStat.SetShown(true);
}

void SdrDragView::HideDragObj()
{
    if(mpCurrentSdrDragMethod && maDragStat.IsShown())
    {
        mpCurrentSdrDragMethod->destroyOverlayGeometry();
        maDragStat.SetShown(false);
    }
}


void SdrDragView::SetNoDragXorPolys(bool bOn)
{
    if (IsNoDragXorPolys()==bOn)
        return;

    const bool bDragging(mpCurrentSdrDragMethod);
    const bool bShown(bDragging && maDragStat.IsShown());

    if(bShown)
    {
        HideDragObj();
    }

    mbNoDragXorPolys = bOn;

    if(bDragging)
    {
        // force recreation of drag content
        mpCurrentSdrDragMethod->resetSdrDragEntries();
    }

    if(bShown)
    {
        ShowDragObj();
    }
}

void SdrDragView::SetDragStripes(bool bOn)
{
    if (mpCurrentSdrDragMethod && maDragStat.IsShown())
    {
        HideDragObj();
        mbDragStripes=bOn;
        ShowDragObj();
    }
    else
    {
        mbDragStripes=bOn;
    }
}

bool SdrDragView::IsOrthoDesired() const
{
    if( dynamic_cast< const SdrDragObjOwn* >( mpCurrentSdrDragMethod.get() )
       || dynamic_cast< const SdrDragResize* >(mpCurrentSdrDragMethod.get() ))
    {
        return m_bOrthoDesiredOnMarked;
    }

    return false;
}

void SdrDragView::SetMarkHandles(SfxViewShell* pOtherShell)
{
    if( mpDragHdl )
        mpDragHdl = nullptr;

    SdrExchangeView::SetMarkHandles(pOtherShell);
}

void SdrDragView::SetSolidDragging(bool bOn)
{
    if(mbSolidDragging != bOn)
    {
        mbSolidDragging = bOn;
    }
}

bool SdrDragView::IsSolidDragging() const
{
    // allow each user to disable by having a local setting, but using AND for
    // checking allowance
    return mbSolidDragging && SvtOptionsDrawinglayer::IsSolidDragCreate();
}

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