Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 732 insertions, 0 deletions

diff --git a/svx/source/engine3d/dragmt3d.cxx b/svx/source/engine3d/dragmt3d.cxx
new file mode 100644
index 000000000..c27d95598
--- /dev/null
+++ b/svx/source/engine3d/dragmt3d.cxx
@@ -0,0 +1,732 @@
+/* -*- 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 <dragmt3d.hxx>
+#include <o3tl/numeric.hxx>
+#include <svx/svdpagv.hxx>
+#include <svx/dialmgr.hxx>
+#include <svx/svddrgmt.hxx>
+#include <svx/svdtrans.hxx>
+#include <svx/obj3d.hxx>
+#include <svx/e3dundo.hxx>
+#include <svx/strings.hrc>
+#include <svx/sdr/overlay/overlaypolypolygon.hxx>
+#include <svx/sdr/overlay/overlaymanager.hxx>
+#include <basegfx/polygon/b2dpolypolygontools.hxx>
+#include <svx/sdr/contact/viewcontactofe3dscene.hxx>
+#include <drawinglayer/geometry/viewinformation3d.hxx>
+#include <svx/e3dsceneupdater.hxx>
+#include <vcl/ptrstyle.hxx>
+#include <comphelper/lok.hxx>
+
+
+E3dDragMethod::E3dDragMethod (
+    SdrDragView &_rView,
+    const SdrMarkList& rMark,
+    E3dDragConstraint eConstr,
+    bool bFull)
+:   SdrDragMethod(_rView),
+    meConstraint(eConstr),
+    mbMoveFull(bFull),
+    mbMovedAtAll(false)
+{
+    // Create a unit for all the 3D objects present in the selection
+    const size_t nCnt(rMark.GetMarkCount());
+
+    if(mbMoveFull)
+    {
+        // for non-visible 3D objects fallback to wireframe interaction
+        for(size_t nObjs = 0; nObjs < nCnt; ++nObjs)
+        {
+            E3dObject* pE3dObj = dynamic_cast< E3dObject* >(rMark.GetMark(nObjs)->GetMarkedSdrObj());
+
+            if(pE3dObj)
+            {
+                if(!pE3dObj->HasFillStyle() && !pE3dObj->HasLineStyle())
+                {
+                    mbMoveFull = false;
+                    break;
+                }
+            }
+        }
+    }
+
+    for(size_t nObjs = 0; nObjs < nCnt; ++nObjs)
+    {
+        E3dObject* pE3dObj = dynamic_cast< E3dObject* >(rMark.GetMark(nObjs)->GetMarkedSdrObj());
+
+        if(pE3dObj)
+        {
+            // fill new interaction unit
+            E3dDragMethodUnit aNewUnit(*pE3dObj);
+
+            // get transformations
+            aNewUnit.maInitTransform = aNewUnit.maTransform = pE3dObj->GetTransform();
+
+            if(nullptr != pE3dObj->getParentE3dSceneFromE3dObject())
+            {
+                // get transform between object and world, normally scene transform
+                aNewUnit.maInvDisplayTransform = aNewUnit.maDisplayTransform = pE3dObj->getParentE3dSceneFromE3dObject()->GetFullTransform();
+                aNewUnit.maInvDisplayTransform.invert();
+            }
+
+            if(!mbMoveFull)
+            {
+                // create wireframe visualisation for parent coordinate system
+                aNewUnit.maWireframePoly.clear();
+                aNewUnit.maWireframePoly = pE3dObj->CreateWireframe();
+                aNewUnit.maWireframePoly.transform(aNewUnit.maTransform);
+            }
+
+            // Determine FullBound
+            maFullBound.Union(pE3dObj->GetSnapRect());
+
+            // Insert Unit
+            maGrp.push_back(aNewUnit);
+        }
+    }
+}
+
+OUString E3dDragMethod::GetSdrDragComment() const
+{
+    return OUString();
+}
+
+// Create the wireframe model for all actions
+
+bool E3dDragMethod::BeginSdrDrag()
+{
+    if(E3dDragConstraint::Z == meConstraint)
+    {
+        const sal_uInt32 nCnt(maGrp.size());
+        DragStat().SetRef1( maFullBound.Center() );
+
+        for(sal_uInt32 nOb(0); nOb < nCnt; nOb++)
+        {
+            E3dDragMethodUnit& rCandidate = maGrp[nOb];
+            rCandidate.mnStartAngle = GetAngle(DragStat().GetStart() - DragStat().GetRef1());
+            rCandidate.mnLastAngle = 0_deg100;
+        }
+    }
+    else
+    {
+        maLastPos = DragStat().GetStart();
+    }
+
+    if(!mbMoveFull)
+    {
+        Show();
+    }
+
+    return true;
+}
+
+bool E3dDragMethod::EndSdrDrag(bool /*bCopy*/)
+{
+    const sal_uInt32 nCnt(maGrp.size());
+
+    if(!mbMoveFull)
+    {
+        // Hide wireframe
+        Hide();
+    }
+
+    // Apply all transformations and create undo's
+    if(mbMovedAtAll)
+    {
+        const bool bUndo = getSdrDragView().IsUndoEnabled();
+        if( bUndo )
+            getSdrDragView().BegUndo(SvxResId(RID_SVX_3D_UNDO_ROTATE));
+        sal_uInt32 nOb(0);
+
+        for(nOb=0;nOb<nCnt;nOb++)
+        {
+            E3dDragMethodUnit& rCandidate = maGrp[nOb];
+            E3DModifySceneSnapRectUpdater aUpdater(&rCandidate.mr3DObj);
+            rCandidate.mr3DObj.SetTransform(rCandidate.maTransform);
+            if( bUndo )
+            {
+                getSdrDragView().AddUndo(
+                    std::make_unique<E3dRotateUndoAction>(
+                        rCandidate.mr3DObj,
+                        rCandidate.maInitTransform,
+                        rCandidate.maTransform));
+            }
+        }
+        if( bUndo )
+            getSdrDragView().EndUndo();
+    }
+
+    return true;
+}
+
+void E3dDragMethod::CancelSdrDrag()
+{
+    if(mbMoveFull)
+    {
+        if(mbMovedAtAll)
+        {
+            const sal_uInt32 nCnt(maGrp.size());
+
+            for(sal_uInt32 nOb(0); nOb < nCnt; nOb++)
+            {
+                // Restore transformation
+                E3dDragMethodUnit& rCandidate = maGrp[nOb];
+                E3DModifySceneSnapRectUpdater aUpdater(&rCandidate.mr3DObj);
+                rCandidate.mr3DObj.SetTransform(rCandidate.maInitTransform);
+            }
+        }
+    }
+    else
+    {
+        // Hide WireFrame
+        Hide();
+    }
+}
+
+// Common MoveSdrDrag()
+
+void E3dDragMethod::MoveSdrDrag(const Point& /*rPnt*/)
+{
+    mbMovedAtAll = true;
+}
+
+// Draw the wire frame model
+
+// for migration from XOR to overlay
+void E3dDragMethod::CreateOverlayGeometry(
+    sdr::overlay::OverlayManager& rOverlayManager,
+    const sdr::contact::ObjectContact& rObjectContact)
+{
+    // We do client-side object manipulation with the Kit API
+    if (comphelper::LibreOfficeKit::isActive())
+        return;
+
+    const sal_uInt32 nCnt(maGrp.size());
+    basegfx::B2DPolyPolygon aResult;
+
+    for(sal_uInt32 nOb(0); nOb < nCnt; nOb++)
+    {
+        E3dDragMethodUnit& rCandidate = maGrp[nOb];
+        SdrPageView* pPV = getSdrDragView().GetSdrPageView();
+
+        if(pPV && pPV->HasMarkedObjPageView())
+        {
+            const basegfx::B3DPolyPolygon aCandidate(rCandidate.maWireframePoly);
+            const sal_uInt32 nPlyCnt(aCandidate.count());
+
+            if(nPlyCnt)
+            {
+                const E3dScene* pScene(rCandidate.mr3DObj.getRootE3dSceneFromE3dObject());
+
+                if(nullptr != pScene)
+                {
+                    const sdr::contact::ViewContactOfE3dScene& rVCScene = static_cast< sdr::contact::ViewContactOfE3dScene& >(pScene->GetViewContact());
+                    const drawinglayer::geometry::ViewInformation3D& aViewInfo3D(rVCScene.getViewInformation3D());
+                    const basegfx::B3DHomMatrix aWorldToView(aViewInfo3D.getDeviceToView() * aViewInfo3D.getProjection() * aViewInfo3D.getOrientation());
+                    const basegfx::B3DHomMatrix aTransform(aWorldToView * rCandidate.maDisplayTransform);
+
+                    // transform to relative scene coordinates
+                    basegfx::B2DPolyPolygon aPolyPolygon(basegfx::utils::createB2DPolyPolygonFromB3DPolyPolygon(aCandidate, aTransform));
+
+                    // transform to 2D view coordinates
+                    aPolyPolygon.transform(rVCScene.getObjectTransformation());
+
+                    aResult.append(aPolyPolygon);
+                }
+            }
+        }
+    }
+
+    if(aResult.count())
+    {
+        std::unique_ptr<sdr::overlay::OverlayPolyPolygonStripedAndFilled> pNew(
+            new sdr::overlay::OverlayPolyPolygonStripedAndFilled(
+                aResult));
+
+        insertNewlyCreatedOverlayObjectForSdrDragMethod(
+            std::move(pNew),
+            rObjectContact,
+            rOverlayManager);
+    }
+}
+
+
+E3dDragRotate::E3dDragRotate(SdrDragView &_rView,
+    const SdrMarkList& rMark,
+    E3dDragConstraint eConstr,
+    bool bFull)
+:   E3dDragMethod(_rView, rMark, eConstr, bFull)
+{
+    // Get center of all selected objects in eye coordinates
+    const sal_uInt32 nCnt(maGrp.size());
+
+    if(!nCnt)
+        return;
+
+    const E3dScene* pScene(maGrp[0].mr3DObj.getRootE3dSceneFromE3dObject());
+
+    if(nullptr == pScene)
+        return;
+
+    const sdr::contact::ViewContactOfE3dScene& rVCScene = static_cast< sdr::contact::ViewContactOfE3dScene& >(pScene->GetViewContact());
+    const drawinglayer::geometry::ViewInformation3D& aViewInfo3D(rVCScene.getViewInformation3D());
+
+    for(sal_uInt32 nOb(0); nOb < nCnt; nOb++)
+    {
+        E3dDragMethodUnit& rCandidate = maGrp[nOb];
+        basegfx::B3DPoint aObjCenter = rCandidate.mr3DObj.GetBoundVolume().getCenter();
+        const basegfx::B3DHomMatrix aTransform(aViewInfo3D.getOrientation() * rCandidate.maDisplayTransform * rCandidate.maInitTransform);
+
+        aObjCenter = aTransform * aObjCenter;
+        maGlobalCenter += aObjCenter;
+    }
+
+    // Divide by the number
+    if(nCnt > 1)
+    {
+        maGlobalCenter /= static_cast<double>(nCnt);
+    }
+
+    // get rotate center and transform to 3D eye coordinates
+    basegfx::B2DPoint aRotCenter2D(Ref1().X(), Ref1().Y());
+
+    // from world to relative scene using inverse getObjectTransformation()
+    basegfx::B2DHomMatrix aInverseObjectTransform(rVCScene.getObjectTransformation());
+    aInverseObjectTransform.invert();
+    aRotCenter2D = aInverseObjectTransform * aRotCenter2D;
+
+    // from 3D view to 3D eye
+    basegfx::B3DPoint aRotCenter3D(aRotCenter2D.getX(), aRotCenter2D.getY(), 0.0);
+    basegfx::B3DHomMatrix aInverseViewToEye(aViewInfo3D.getDeviceToView() * aViewInfo3D.getProjection());
+    aInverseViewToEye.invert();
+    aRotCenter3D = aInverseViewToEye * aRotCenter3D;
+
+// Use X,Y of the RotCenter and depth of the common object centre
+// as rotation point in the space
+    maGlobalCenter.setX(aRotCenter3D.getX());
+    maGlobalCenter.setY(aRotCenter3D.getY());
+}
+
+
+//The object is moved, determine the angle
+
+void E3dDragRotate::MoveSdrDrag(const Point& rPnt)
+{
+    // call parent
+    E3dDragMethod::MoveSdrDrag(rPnt);
+
+    if(!DragStat().CheckMinMoved(rPnt))
+        return;
+
+    // Get modifier
+    sal_uInt16 nModifier = 0;
+    if(auto pDragView = dynamic_cast<const E3dView*>(&getSdrDragView()))
+    {
+        const MouseEvent& rLastMouse = pDragView->GetMouseEvent();
+        nModifier = rLastMouse.GetModifier();
+    }
+
+    // Rotate all objects
+    const sal_uInt32 nCnt(maGrp.size());
+
+    for(sal_uInt32 nOb(0); nOb < nCnt; nOb++)
+    {
+        // Determine rotation angle
+        double fWAngle, fHAngle;
+        E3dDragMethodUnit& rCandidate = maGrp[nOb];
+
+        if(E3dDragConstraint::Z == meConstraint)
+        {
+            Degree100 lastAngle = NormAngle36000(GetAngle(rPnt - DragStat().GetRef1()) -
+                rCandidate.mnStartAngle) - rCandidate.mnLastAngle;
+            rCandidate.mnLastAngle = lastAngle + rCandidate.mnLastAngle;
+            fWAngle = toDegrees(lastAngle);
+            fHAngle = 0.0;
+        }
+        else
+        {
+            if ((maFullBound.GetWidth() == 0) || (maFullBound.GetHeight() == 0))
+                throw o3tl::divide_by_zero();
+            fWAngle = 90.0 * static_cast<double>(rPnt.X() - maLastPos.X())
+                / static_cast<double>(maFullBound.GetWidth());
+            fHAngle = 90.0 * static_cast<double>(rPnt.Y() - maLastPos.Y())
+                / static_cast<double>(maFullBound.GetHeight());
+        }
+        tools::Long nSnap = 0;
+
+        if(!getSdrDragView().IsRotateAllowed())
+            nSnap = 90;
+
+        if(nSnap != 0)
+        {
+            fWAngle = static_cast<double>((static_cast<tools::Long>(fWAngle) + nSnap/2) / nSnap * nSnap);
+            fHAngle = static_cast<double>((static_cast<tools::Long>(fHAngle) + nSnap/2) / nSnap * nSnap);
+        }
+
+        // to radians
+        fWAngle = basegfx::deg2rad(fWAngle);
+        fHAngle = basegfx::deg2rad(fHAngle);
+
+        // Determine transformation
+        basegfx::B3DHomMatrix aRotMat;
+        if(E3dDragConstraint::Y & meConstraint)
+        {
+            if(nModifier & KEY_MOD2)
+                aRotMat.rotate(0.0, 0.0, fWAngle);
+            else
+                aRotMat.rotate(0.0, fWAngle, 0.0);
+        }
+        else if(E3dDragConstraint::Z & meConstraint)
+        {
+            if(nModifier & KEY_MOD2)
+                aRotMat.rotate(0.0, fWAngle, 0.0);
+            else
+                aRotMat.rotate(0.0, 0.0, fWAngle);
+        }
+        if(E3dDragConstraint::X & meConstraint)
+        {
+            aRotMat.rotate(fHAngle, 0.0, 0.0);
+        }
+
+        const E3dScene* pScene(rCandidate.mr3DObj.getRootE3dSceneFromE3dObject());
+
+        if(nullptr != pScene)
+        {
+            // Transformation in eye coordinates, there rotate then and back
+            const sdr::contact::ViewContactOfE3dScene& rVCScene = static_cast< sdr::contact::ViewContactOfE3dScene& >(pScene->GetViewContact());
+            const drawinglayer::geometry::ViewInformation3D& aViewInfo3D(rVCScene.getViewInformation3D());
+            basegfx::B3DHomMatrix aInverseOrientation(aViewInfo3D.getOrientation());
+            aInverseOrientation.invert();
+
+            basegfx::B3DHomMatrix aTransMat(rCandidate.maDisplayTransform);
+            aTransMat *= aViewInfo3D.getOrientation();
+            aTransMat.translate(-maGlobalCenter.getX(), -maGlobalCenter.getY(), -maGlobalCenter.getZ());
+            aTransMat *= aRotMat;
+            aTransMat.translate(maGlobalCenter.getX(), maGlobalCenter.getY(), maGlobalCenter.getZ());
+            aTransMat *= aInverseOrientation;
+            aTransMat *= rCandidate.maInvDisplayTransform;
+
+            // ...and apply
+            rCandidate.maTransform *= aTransMat;
+
+            if(mbMoveFull)
+            {
+                E3DModifySceneSnapRectUpdater aUpdater(&rCandidate.mr3DObj);
+                rCandidate.mr3DObj.SetTransform(rCandidate.maTransform);
+            }
+            else
+            {
+                Hide();
+                rCandidate.maWireframePoly.transform(aTransMat);
+                Show();
+            }
+        }
+    }
+    maLastPos = rPnt;
+    DragStat().NextMove(rPnt);
+}
+
+PointerStyle E3dDragRotate::GetSdrDragPointer() const
+{
+    return PointerStyle::Rotate;
+}
+
+// E3dDragMove. This drag method is only required for translations inside
+// 3D scenes. If a 3D-scene itself moved, then this drag method will drag
+// not be used.
+
+
+E3dDragMove::E3dDragMove(SdrDragView &_rView,
+    const SdrMarkList& rMark,
+    SdrHdlKind eDrgHdl,
+    E3dDragConstraint eConstr,
+    bool bFull)
+:   E3dDragMethod(_rView, rMark, eConstr, bFull),
+    meWhatDragHdl(eDrgHdl)
+{
+    switch(meWhatDragHdl)
+    {
+        case SdrHdlKind::Left:
+            maScaleFixPos = maFullBound.RightCenter();
+            break;
+        case SdrHdlKind::Right:
+            maScaleFixPos = maFullBound.LeftCenter();
+            break;
+        case SdrHdlKind::Upper:
+            maScaleFixPos = maFullBound.BottomCenter();
+            break;
+        case SdrHdlKind::Lower:
+            maScaleFixPos = maFullBound.TopCenter();
+            break;
+        case SdrHdlKind::UpperLeft:
+            maScaleFixPos = maFullBound.BottomRight();
+            break;
+        case SdrHdlKind::UpperRight:
+            maScaleFixPos = maFullBound.BottomLeft();
+            break;
+        case SdrHdlKind::LowerLeft:
+            maScaleFixPos = maFullBound.TopRight();
+            break;
+        case SdrHdlKind::LowerRight:
+            maScaleFixPos = maFullBound.TopLeft();
+            break;
+        default:
+            // Moving the object, SdrHdlKind::Move
+            break;
+    }
+
+    // Override when IsResizeAtCenter()
+    if(getSdrDragView().IsResizeAtCenter())
+    {
+        meWhatDragHdl = SdrHdlKind::User;
+        maScaleFixPos = maFullBound.Center();
+    }
+}
+
+// The object is moved, determine the translations
+
+void E3dDragMove::MoveSdrDrag(const Point& rPnt)
+{
+    // call parent
+    E3dDragMethod::MoveSdrDrag(rPnt);
+
+    if(!DragStat().CheckMinMoved(rPnt))
+        return;
+
+    if(SdrHdlKind::Move == meWhatDragHdl)
+    {
+        // Translation
+        // Determine the motion vector
+        const sal_uInt32 nCnt(maGrp.size());
+
+        // Get modifier
+        sal_uInt16 nModifier(0);
+
+        if(auto pDragView = dynamic_cast<const E3dView*>(&getSdrDragView()))
+        {
+            const MouseEvent& rLastMouse = pDragView->GetMouseEvent();
+            nModifier = rLastMouse.GetModifier();
+        }
+
+        for(sal_uInt32 nOb(0); nOb < nCnt; nOb++)
+        {
+            E3dDragMethodUnit& rCandidate = maGrp[nOb];
+            const E3dScene* pScene(rCandidate.mr3DObj.getRootE3dSceneFromE3dObject());
+
+            if(nullptr != pScene)
+            {
+                const sdr::contact::ViewContactOfE3dScene& rVCScene = static_cast< sdr::contact::ViewContactOfE3dScene& >(pScene->GetViewContact());
+                const drawinglayer::geometry::ViewInformation3D& aViewInfo3D(rVCScene.getViewInformation3D());
+
+                // move coor from 2d world to 3d Eye
+                basegfx::B2DPoint aGlobalMoveHead2D(static_cast<double>(rPnt.X() - maLastPos.X()), static_cast<double>(rPnt.Y() - maLastPos.Y()));
+                basegfx::B2DPoint aGlobalMoveTail2D(0.0, 0.0);
+                basegfx::B2DHomMatrix aInverseSceneTransform(rVCScene.getObjectTransformation());
+
+                aInverseSceneTransform.invert();
+                aGlobalMoveHead2D = aInverseSceneTransform * aGlobalMoveHead2D;
+                aGlobalMoveTail2D = aInverseSceneTransform * aGlobalMoveTail2D;
+
+                basegfx::B3DPoint aMoveHead3D(aGlobalMoveHead2D.getX(), aGlobalMoveHead2D.getY(), 0.5);
+                basegfx::B3DPoint aMoveTail3D(aGlobalMoveTail2D.getX(), aGlobalMoveTail2D.getY(), 0.5);
+                basegfx::B3DHomMatrix aInverseViewToEye(aViewInfo3D.getDeviceToView() * aViewInfo3D.getProjection());
+                aInverseViewToEye.invert();
+
+                aMoveHead3D = aInverseViewToEye * aMoveHead3D;
+                aMoveTail3D = aInverseViewToEye * aMoveTail3D;
+
+                // eventually switch movement from XY to XZ plane
+                if(nModifier & KEY_MOD2)
+                {
+                    double fZwi = aMoveHead3D.getY();
+                    aMoveHead3D.setY(aMoveHead3D.getZ());
+                    aMoveHead3D.setZ(fZwi);
+
+                    fZwi = aMoveTail3D.getY();
+                    aMoveTail3D.setY(aMoveTail3D.getZ());
+                    aMoveTail3D.setZ(fZwi);
+                }
+
+                // Motion vector from eye coordinates to parent coordinates
+                basegfx::B3DHomMatrix aInverseOrientation(aViewInfo3D.getOrientation());
+                aInverseOrientation.invert();
+                basegfx::B3DHomMatrix aCompleteTrans(rCandidate.maInvDisplayTransform * aInverseOrientation);
+
+                aMoveHead3D = aCompleteTrans * aMoveHead3D;
+                aMoveTail3D = aCompleteTrans* aMoveTail3D;
+
+                // build transformation
+                basegfx::B3DHomMatrix aTransMat;
+                basegfx::B3DPoint aTranslate(aMoveHead3D - aMoveTail3D);
+                aTransMat.translate(aTranslate.getX(), aTranslate.getY(), aTranslate.getZ());
+
+                // ...and apply
+                rCandidate.maTransform *= aTransMat;
+
+                if(mbMoveFull)
+                {
+                    E3DModifySceneSnapRectUpdater aUpdater(&rCandidate.mr3DObj);
+                    rCandidate.mr3DObj.SetTransform(rCandidate.maTransform);
+                }
+                else
+                {
+                    Hide();
+                    rCandidate.maWireframePoly.transform(aTransMat);
+                    Show();
+                }
+            }
+        }
+    }
+    else
+    {
+        // Scaling
+        // Determine scaling vector
+        Point aStartPos = DragStat().GetStart();
+        const sal_uInt32 nCnt(maGrp.size());
+
+        for(sal_uInt32 nOb(0); nOb < nCnt; nOb++)
+        {
+            E3dDragMethodUnit& rCandidate = maGrp[nOb];
+            const basegfx::B3DPoint aObjectCenter(rCandidate.mr3DObj.GetBoundVolume().getCenter());
+            const E3dScene* pScene(rCandidate.mr3DObj.getRootE3dSceneFromE3dObject());
+
+            if(nullptr != pScene)
+            {
+                // transform from 2D world view to 3D eye
+                const sdr::contact::ViewContactOfE3dScene& rVCScene = static_cast< sdr::contact::ViewContactOfE3dScene& >(pScene->GetViewContact());
+                const drawinglayer::geometry::ViewInformation3D& aViewInfo3D(rVCScene.getViewInformation3D());
+
+                basegfx::B2DPoint aGlobalScaleStart2D(static_cast<double>(aStartPos.X()), static_cast<double>(aStartPos.Y()));
+                basegfx::B2DPoint aGlobalScaleNext2D(static_cast<double>(rPnt.X()), static_cast<double>(rPnt.Y()));
+                basegfx::B2DPoint aGlobalScaleFixPos2D(static_cast<double>(maScaleFixPos.X()), static_cast<double>(maScaleFixPos.Y()));
+                basegfx::B2DHomMatrix aInverseSceneTransform(rVCScene.getObjectTransformation());
+
+                aInverseSceneTransform.invert();
+                aGlobalScaleStart2D = aInverseSceneTransform * aGlobalScaleStart2D;
+                aGlobalScaleNext2D = aInverseSceneTransform * aGlobalScaleNext2D;
+                aGlobalScaleFixPos2D = aInverseSceneTransform * aGlobalScaleFixPos2D;
+
+                basegfx::B3DPoint aGlobalScaleStart3D(aGlobalScaleStart2D.getX(), aGlobalScaleStart2D.getY(), aObjectCenter.getZ());
+                basegfx::B3DPoint aGlobalScaleNext3D(aGlobalScaleNext2D.getX(), aGlobalScaleNext2D.getY(), aObjectCenter.getZ());
+                basegfx::B3DPoint aGlobalScaleFixPos3D(aGlobalScaleFixPos2D.getX(), aGlobalScaleFixPos2D.getY(), aObjectCenter.getZ());
+                basegfx::B3DHomMatrix aInverseViewToEye(aViewInfo3D.getDeviceToView() * aViewInfo3D.getProjection());
+
+                aInverseViewToEye.invert();
+                basegfx::B3DPoint aScStart(aInverseViewToEye * aGlobalScaleStart3D);
+                basegfx::B3DPoint aScNext(aInverseViewToEye * aGlobalScaleNext3D);
+                basegfx::B3DPoint aScFixPos(aInverseViewToEye * aGlobalScaleFixPos3D);
+
+                // constraints?
+                switch(meWhatDragHdl)
+                {
+                    case SdrHdlKind::Left:
+                    case SdrHdlKind::Right:
+                        // to constrain on X -> Y equal
+                        aScNext.setY(aScFixPos.getY());
+                        break;
+                    case SdrHdlKind::Upper:
+                    case SdrHdlKind::Lower:
+                        // constrain to Y -> X equal
+                        aScNext.setX(aScFixPos.getX());
+                        break;
+                    default:
+                        break;
+                }
+
+                // get scale vector in eye coordinates
+                basegfx::B3DPoint aScaleVec(aScStart - aScFixPos);
+                aScaleVec.setZ(1.0);
+
+                if(aScaleVec.getX() != 0.0)
+                {
+                    aScaleVec.setX((aScNext.getX() - aScFixPos.getX()) / aScaleVec.getX());
+                }
+                else
+                {
+                    aScaleVec.setX(1.0);
+                }
+
+                if(aScaleVec.getY() != 0.0)
+                {
+                    aScaleVec.setY((aScNext.getY() - aScFixPos.getY()) / aScaleVec.getY());
+                }
+                else
+                {
+                    aScaleVec.setY(1.0);
+                }
+
+                // SHIFT-key used?
+                if(getSdrDragView().IsOrtho())
+                {
+                    if(fabs(aScaleVec.getX()) > fabs(aScaleVec.getY()))
+                    {
+                        // X is biggest
+                        aScaleVec.setY(aScaleVec.getX());
+                    }
+                    else
+                    {
+                        // Y is biggest
+                        aScaleVec.setX(aScaleVec.getY());
+                    }
+                }
+
+                // build transformation
+                basegfx::B3DHomMatrix aInverseOrientation(aViewInfo3D.getOrientation());
+                aInverseOrientation.invert();
+
+                basegfx::B3DHomMatrix aNewTrans = rCandidate.maInitTransform;
+                aNewTrans *= rCandidate.maDisplayTransform;
+                aNewTrans *= aViewInfo3D.getOrientation();
+                aNewTrans.translate(-aScFixPos.getX(), -aScFixPos.getY(), -aScFixPos.getZ());
+                aNewTrans.scale(aScaleVec.getX(), aScaleVec.getY(), aScaleVec.getZ());
+                aNewTrans.translate(aScFixPos.getX(), aScFixPos.getY(), aScFixPos.getZ());
+                aNewTrans *= aInverseOrientation;
+                aNewTrans *= rCandidate.maInvDisplayTransform;
+
+                // ...and apply
+                rCandidate.maTransform = aNewTrans;
+
+                if(mbMoveFull)
+                {
+                    E3DModifySceneSnapRectUpdater aUpdater(&rCandidate.mr3DObj);
+                    rCandidate.mr3DObj.SetTransform(rCandidate.maTransform);
+                }
+                else
+                {
+                    Hide();
+                    rCandidate.maWireframePoly.clear();
+                    rCandidate.maWireframePoly = rCandidate.mr3DObj.CreateWireframe();
+                    rCandidate.maWireframePoly.transform(rCandidate.maTransform);
+                    Show();
+                }
+            }
+        }
+    }
+    maLastPos = rPnt;
+    DragStat().NextMove(rPnt);
+}
+
+PointerStyle E3dDragMove::GetSdrDragPointer() const
+{
+    return PointerStyle::Move;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */