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, 1777 insertions, 0 deletions

diff --git a/svx/source/sdr/contact/viewobjectcontactofunocontrol.cxx b/svx/source/sdr/contact/viewobjectcontactofunocontrol.cxx
new file mode 100644
index 000000000..5ca5a32d2
--- /dev/null
+++ b/svx/source/sdr/contact/viewobjectcontactofunocontrol.cxx
@@ -0,0 +1,1777 @@
+/* -*- 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 <sdr/contact/viewobjectcontactofunocontrol.hxx>
+#include <sdr/contact/viewcontactofunocontrol.hxx>
+#include <svx/sdr/contact/displayinfo.hxx>
+#include <svx/sdr/contact/objectcontactofpageview.hxx>
+#include <svx/sdr/primitive2d/svx_primitivetypes2d.hxx>
+#include <svx/svdouno.hxx>
+#include <svx/svdpagv.hxx>
+#include <svx/svdview.hxx>
+#include <svx/sdrpagewindow.hxx>
+
+#include <com/sun/star/awt/XControl.hpp>
+#include <com/sun/star/awt/XControlModel.hpp>
+#include <com/sun/star/awt/XControlContainer.hpp>
+#include <com/sun/star/awt/XWindow2.hpp>
+#include <com/sun/star/awt/PosSize.hpp>
+#include <com/sun/star/awt/XView.hpp>
+#include <com/sun/star/beans/XPropertySet.hpp>
+#include <com/sun/star/lang/XComponent.hpp>
+#include <com/sun/star/awt/InvalidateStyle.hpp>
+#include <com/sun/star/util/XModeChangeListener.hpp>
+#include <com/sun/star/util/XModeChangeBroadcaster.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <com/sun/star/container/XContainerListener.hpp>
+#include <com/sun/star/container/XContainer.hpp>
+
+#include <vcl/canvastools.hxx>
+#include <vcl/svapp.hxx>
+#include <vcl/window.hxx>
+#include <comphelper/processfactory.hxx>
+#include <comphelper/scopeguard.hxx>
+#include <cppuhelper/implbase.hxx>
+#include <toolkit/helper/vclunohelper.hxx>
+#include <tools/diagnose_ex.h>
+#include <tools/debug.hxx>
+#include <basegfx/matrix/b2dhommatrix.hxx>
+#include <basegfx/matrix/b2dhommatrixtools.hxx>
+#include <drawinglayer/primitive2d/controlprimitive2d.hxx>
+
+/*
+
+Form controls (more precise: UNO Controls) in the drawing layer are ... prone to breakage, since they have some
+specialities which the drawing layer currently doesn't capture too well. In particular, having a living VCL
+window as child of the document window, and coupling this Window to a drawing layer object, makes things
+difficult sometimes.
+
+Below is a list of issues which existed in the past. Whenever you change code here, you're encouraged to
+verify those issues are still fixed. (Whenever you have some additional time, you're encouraged to write
+an automatic test for one or more of those issues for which this is possible :)
+
+https://bz.apache.org/ooo/show_bug.cgi?id=105992
+zooming documents containing (alive) form controls improperly positions the controls
+
+https://bz.apache.org/ooo/show_bug.cgi?id=104362
+crash when copy a control
+
+https://bz.apache.org/ooo/show_bug.cgi?id=104544
+Gridcontrol duplicated after design view on/off
+
+https://bz.apache.org/ooo/show_bug.cgi?id=102089
+print preview shows control elements with property printable=false
+
+https://bz.apache.org/ooo/show_bug.cgi?id=102090
+problem with setVisible on TextControl
+
+https://bz.apache.org/ooo/show_bug.cgi?id=103138
+loop when insert a control in draw
+
+https://bz.apache.org/ooo/show_bug.cgi?id=101398
+initially-displaying a document with many controls is very slow
+
+https://bz.apache.org/ooo/show_bug.cgi?id=72429
+repaint error in form wizard in bugdoc database
+
+https://bz.apache.org/ooo/show_bug.cgi?id=72694
+form control artifacts when scrolling a text fast
+
+*/
+
+
+namespace sdr::contact {
+
+
+    using namespace ::com::sun::star::awt::InvalidateStyle;
+    using ::com::sun::star::uno::Reference;
+    using ::com::sun::star::uno::XInterface;
+    using ::com::sun::star::uno::UNO_QUERY;
+    using ::com::sun::star::uno::UNO_QUERY_THROW;
+    using ::com::sun::star::uno::Exception;
+    using ::com::sun::star::uno::RuntimeException;
+    using ::com::sun::star::awt::XControl;
+    using ::com::sun::star::awt::XControlModel;
+    using ::com::sun::star::awt::XControlContainer;
+    using ::com::sun::star::awt::XWindow2;
+    using ::com::sun::star::awt::XWindowListener;
+    using ::com::sun::star::awt::PosSize::POSSIZE;
+    using ::com::sun::star::awt::XView;
+    using ::com::sun::star::awt::WindowEvent;
+    using ::com::sun::star::beans::XPropertySet;
+    using ::com::sun::star::lang::XComponent;
+    using ::com::sun::star::awt::XWindowPeer;
+    using ::com::sun::star::beans::XPropertyChangeListener;
+    using ::com::sun::star::util::XModeChangeListener;
+    using ::com::sun::star::util::XModeChangeBroadcaster;
+    using ::com::sun::star::util::ModeChangeEvent;
+    using ::com::sun::star::lang::EventObject;
+    using ::com::sun::star::beans::PropertyChangeEvent;
+    using ::com::sun::star::container::XContainerListener;
+    using ::com::sun::star::container::XContainer;
+    using ::com::sun::star::container::ContainerEvent;
+    using ::com::sun::star::uno::Any;
+
+    namespace {
+
+    class ControlHolder
+    {
+    private:
+        Reference< XControl >   m_xControl;
+        Reference< XWindow2 >   m_xControlWindow;
+        Reference< XView    >   m_xControlView;
+
+    public:
+        ControlHolder()
+        {
+        }
+
+        explicit ControlHolder( const Reference< XControl >& _rxControl )
+        {
+            *this = _rxControl;
+        }
+
+        ControlHolder& operator=( const Reference< XControl >& _rxControl )
+        {
+            clear();
+
+            m_xControl = _rxControl;
+            if ( m_xControl.is() )
+            {
+                m_xControlWindow.set( m_xControl, UNO_QUERY );
+                m_xControlView.set( m_xControl, UNO_QUERY );
+                if ( !m_xControlWindow.is() || !m_xControlView.is() )
+                {
+                    OSL_FAIL( "ControlHolder::operator=: invalid XControl, missing required interfaces!" );
+                    clear();
+                }
+            }
+
+            return *this;
+        }
+
+    public:
+        bool    is() const { return m_xControl.is() && m_xControlWindow.is() && m_xControlView.is(); }
+        void    clear() { m_xControl.clear(); m_xControlWindow.clear(); m_xControlView.clear(); }
+
+        // delegators for the methods of the UNO interfaces
+        // Note all those will crash if called for a NULL object.
+        bool     isDesignMode() const                        { return m_xControl->isDesignMode();         }
+        void     setDesignMode( const bool _bDesign ) const  { m_xControl->setDesignMode( _bDesign );     }
+        bool     isVisible() const                           { return m_xControlWindow->isVisible();      }
+        void     setVisible( const bool _bVisible ) const    { m_xControlWindow->setVisible( _bVisible ); }
+        Reference< XControlModel >
+                        getModel() const { return m_xControl->getModel(); }
+        void     setModel( const Reference< XControlModel >& _m ) const { m_xControl->setModel( _m ); }
+
+        void     addWindowListener( const Reference< XWindowListener >& _l ) const    { m_xControlWindow->addWindowListener( _l );    }
+        void     removeWindowListener( const Reference< XWindowListener >& _l ) const { m_xControlWindow->removeWindowListener( _l ); }
+               void     setPosSize( const tools::Rectangle& _rPosSize ) const;
+               tools::Rectangle
+                        getPosSize() const;
+               void     setZoom( const ::basegfx::B2DVector& _rScale ) const;
+               ::basegfx::B2DVector
+                        getZoom() const;
+
+               void     invalidate() const;
+
+    public:
+        const Reference< XControl >&    getControl() const  { return m_xControl; }
+    };
+
+    bool operator==( const ControlHolder& _rControl, const Reference< XInterface >& _rxCompare )
+    {
+        return _rControl.getControl() == _rxCompare;
+    }
+
+    bool operator==( const ControlHolder& _rControl, const Any& _rxCompare )
+    {
+        return _rControl == Reference< XInterface >( _rxCompare, UNO_QUERY );
+    }
+
+    }
+
+    void ControlHolder::setPosSize( const tools::Rectangle& _rPosSize ) const
+    {
+        // no check whether we're valid, this is the responsibility of the caller
+
+        // don't call setPosSize when pos/size did not change #i104181#
+        ::tools::Rectangle aCurrentRect( getPosSize() );
+        if ( aCurrentRect != _rPosSize )
+        {
+            m_xControlWindow->setPosSize(
+                _rPosSize.Left(), _rPosSize.Top(), _rPosSize.GetWidth(), _rPosSize.GetHeight(),
+                POSSIZE
+            );
+        }
+    }
+
+
+    ::tools::Rectangle ControlHolder::getPosSize() const
+    {
+        // no check whether we're valid, this is the responsibility of the caller
+        return VCLUnoHelper::ConvertToVCLRect( m_xControlWindow->getPosSize() );
+    }
+
+
+    void ControlHolder::setZoom( const ::basegfx::B2DVector& _rScale ) const
+    {
+        // no check whether we're valid, this is the responsibility of the caller
+        m_xControlView->setZoom( static_cast<float>(_rScale.getX()), static_cast<float>(_rScale.getY()) );
+    }
+
+
+    void ControlHolder::invalidate() const
+    {
+        Reference< XWindowPeer > xPeer( m_xControl->getPeer() );
+        if ( xPeer.is() )
+        {
+            VclPtr<vcl::Window> pWindow = VCLUnoHelper::GetWindow( xPeer );
+            OSL_ENSURE( pWindow, "ControlHolder::invalidate: no implementation access!" );
+            if ( pWindow )
+                pWindow->Invalidate();
+        }
+    }
+
+
+    ::basegfx::B2DVector ControlHolder::getZoom() const
+    {
+        // no check whether we're valid, this is the responsibility of the caller
+
+        // Argh. Why does XView have a setZoom only, but not a getZoom?
+        VclPtr<vcl::Window> pWindow = VCLUnoHelper::GetWindow( m_xControl->getPeer() );
+        OSL_ENSURE( pWindow, "ControlHolder::getZoom: no implementation access!" );
+
+        ::basegfx::B2DVector aZoom( 1, 1 );
+        if ( pWindow )
+        {
+            const Fraction& rZoom( pWindow->GetZoom() );
+            aZoom.setX( static_cast<double>(rZoom) );
+            aZoom.setY( static_cast<double>(rZoom) );
+        }
+        return aZoom;
+    }
+
+    namespace UnoControlContactHelper {
+
+    /** positions a control, and sets its zoom mode, using a given transformation and output device
+     */
+    static void adjustControlGeometry_throw( const ControlHolder& _rControl, const tools::Rectangle& _rLogicBoundingRect,
+        const basegfx::B2DHomMatrix& _rViewTransformation, const ::basegfx::B2DHomMatrix& _rZoomLevelNormalization )
+    {
+        OSL_PRECOND( _rControl.is(), "UnoControlContactHelper::adjustControlGeometry_throw: illegal control!" );
+        if ( !_rControl.is() )
+            return;
+
+    #if OSL_DEBUG_LEVEL > 0
+        ::basegfx::B2DTuple aViewScale, aViewTranslate;
+        double nViewRotate(0), nViewShearX(0);
+        _rViewTransformation.decompose( aViewScale, aViewTranslate, nViewRotate, nViewShearX );
+
+        ::basegfx::B2DTuple aZoomScale, aZoomTranslate;
+        double nZoomRotate(0), nZoomShearX(0);
+        _rZoomLevelNormalization.decompose( aZoomScale, aZoomTranslate, nZoomRotate, nZoomShearX );
+    #endif
+
+        // transform the logic bound rect, using the view transformation, to pixel coordinates
+        ::basegfx::B2DPoint aTopLeft( _rLogicBoundingRect.Left(), _rLogicBoundingRect.Top() );
+        aTopLeft *= _rViewTransformation;
+        ::basegfx::B2DPoint aBottomRight( _rLogicBoundingRect.Right(), _rLogicBoundingRect.Bottom() );
+        aBottomRight *= _rViewTransformation;
+
+        const tools::Rectangle aPaintRectPixel(static_cast<tools::Long>(std::round(aTopLeft.getX())),
+                                               static_cast<tools::Long>(std::round(aTopLeft.getY())),
+                                               static_cast<tools::Long>(std::round(aBottomRight.getX())),
+                                               static_cast<tools::Long>(std::round(aBottomRight.getY())));
+        _rControl.setPosSize( aPaintRectPixel );
+
+        // determine the scale from the current view transformation, and the normalization matrix
+        ::basegfx::B2DHomMatrix aObtainResolutionDependentScale( _rViewTransformation * _rZoomLevelNormalization );
+        ::basegfx::B2DVector aScale, aTranslate;
+        double fRotate, fShearX;
+        aObtainResolutionDependentScale.decompose( aScale, aTranslate, fRotate, fShearX );
+        _rControl.setZoom( aScale );
+    }
+
+    /** disposes the given control
+     */
+    static void disposeAndClearControl_nothrow( ControlHolder& _rControl )
+    {
+        try
+        {
+            Reference< XComponent > xControlComp = _rControl.getControl();
+            if ( xControlComp.is() )
+                xControlComp->dispose();
+        }
+        catch( const Exception& )
+        {
+            DBG_UNHANDLED_EXCEPTION("svx");
+        }
+        _rControl.clear();
+    }
+
+    }
+
+    namespace {
+
+    /** interface encapsulating access to an SdrPageView, stripped down to the methods we really need
+     */
+    class IPageViewAccess
+    {
+    public:
+        /** determines whether the view is currently in design mode
+         */
+        virtual bool    isDesignMode() const = 0;
+
+        /** retrieves the control container for a given output device
+         */
+        virtual Reference< XControlContainer >
+                        getControlContainer( const OutputDevice& _rDevice ) const = 0;
+
+        /** determines whether a given layer is visible
+         */
+        virtual bool    isLayerVisible( SdrLayerID _nLayerID ) const = 0;
+
+    protected:
+        ~IPageViewAccess() {}
+    };
+
+    /** is a ->IPageViewAccess implementation based on a real ->SdrPageView instance
+     */
+    class SdrPageViewAccess : public IPageViewAccess
+    {
+        const SdrPageView&  m_rPageView;
+    public:
+        explicit SdrPageViewAccess( const SdrPageView& _rPageView ) : m_rPageView( _rPageView ) { }
+
+        virtual ~SdrPageViewAccess() {}
+
+        virtual bool    isDesignMode() const override;
+        virtual Reference< XControlContainer >
+                        getControlContainer( const OutputDevice& _rDevice ) const override;
+        virtual bool    isLayerVisible( SdrLayerID _nLayerID ) const override;
+    };
+
+    }
+
+    bool SdrPageViewAccess::isDesignMode() const
+    {
+        return m_rPageView.GetView().IsDesignMode();
+    }
+
+
+    Reference< XControlContainer > SdrPageViewAccess::getControlContainer( const OutputDevice& _rDevice ) const
+    {
+        Reference< XControlContainer > xControlContainer = m_rPageView.GetControlContainer( _rDevice );
+        DBG_ASSERT( xControlContainer.is() || nullptr == m_rPageView.FindPageWindow( _rDevice ),
+            "SdrPageViewAccess::getControlContainer: the output device is known, but there is no control container for it?" );
+        return xControlContainer;
+    }
+
+
+    bool SdrPageViewAccess::isLayerVisible( SdrLayerID _nLayerID ) const
+    {
+        return m_rPageView.GetVisibleLayers().IsSet( _nLayerID );
+    }
+
+    namespace {
+
+    /** is a ->IPageViewAccess implementation which can be used to create an invisible control for
+        an arbitrary window
+     */
+    class InvisibleControlViewAccess : public IPageViewAccess
+    {
+    private:
+        Reference< XControlContainer >& m_rControlContainer;
+    public:
+        explicit InvisibleControlViewAccess( Reference< XControlContainer >& _inout_ControlContainer )
+            :m_rControlContainer( _inout_ControlContainer )
+        {
+        }
+
+        virtual ~InvisibleControlViewAccess() {}
+
+        virtual bool    isDesignMode() const override;
+        virtual Reference< XControlContainer >
+                        getControlContainer( const OutputDevice& _rDevice ) const override;
+        virtual bool    isLayerVisible( SdrLayerID _nLayerID ) const override;
+    };
+
+    }
+
+    bool InvisibleControlViewAccess::isDesignMode() const
+    {
+        return true;
+    }
+
+
+    Reference< XControlContainer > InvisibleControlViewAccess::getControlContainer( const OutputDevice& _rDevice ) const
+    {
+        if ( !m_rControlContainer.is() )
+        {
+            const vcl::Window* pWindow = _rDevice.GetOwnerWindow();
+            OSL_ENSURE( pWindow, "InvisibleControlViewAccess::getControlContainer: expected to be called for a window only!" );
+            if ( pWindow )
+                m_rControlContainer = VCLUnoHelper::CreateControlContainer( const_cast< vcl::Window* >( pWindow ) );
+        }
+        return m_rControlContainer;
+    }
+
+
+    bool InvisibleControlViewAccess::isLayerVisible( SdrLayerID /*_nLayerID*/ ) const
+    {
+        return false;
+    }
+
+    namespace {
+
+    //= DummyPageViewAccess
+
+    /** is a ->IPageViewAccess implementation which can be used to create a control for an arbitrary
+        non-Window device
+
+        The implementation will report the "PageView" as being in design mode, all layers to be visible,
+        and will not return any ControlContainer, so all control container related features (notifications etc)
+        are not available.
+     */
+    class DummyPageViewAccess : public IPageViewAccess
+    {
+    public:
+        DummyPageViewAccess()
+        {
+        }
+
+        virtual ~DummyPageViewAccess() {}
+
+        virtual bool    isDesignMode() const override;
+        virtual Reference< XControlContainer >
+                        getControlContainer( const OutputDevice& _rDevice ) const override;
+        virtual bool    isLayerVisible( SdrLayerID _nLayerID ) const override;
+    };
+
+    }
+
+    bool DummyPageViewAccess::isDesignMode() const
+    {
+        return true;
+    }
+
+
+    Reference< XControlContainer > DummyPageViewAccess::getControlContainer( const OutputDevice& /*_rDevice*/ ) const
+    {
+        return nullptr;
+    }
+
+
+    bool DummyPageViewAccess::isLayerVisible( SdrLayerID /*_nLayerID*/ ) const
+    {
+        return true;
+    }
+
+
+    //= ViewObjectContactOfUnoControl_Impl
+
+    typedef     ::cppu::WeakImplHelper <   XWindowListener
+                                        ,   XPropertyChangeListener
+                                        ,   XContainerListener
+                                        ,   XModeChangeListener
+                                        >   ViewObjectContactOfUnoControl_Impl_Base;
+
+    class ViewObjectContactOfUnoControl_Impl:
+        public ViewObjectContactOfUnoControl_Impl_Base
+    {
+    private:
+        // tdf#41935 note that access to members is protected with SolarMutex;
+        // the class previously had its own mutex but that is prone to deadlock
+
+        /// the instance whose IMPL we are
+        ViewObjectContactOfUnoControl*  m_pAntiImpl;
+
+        /// are we currently inside impl_ensureControl_nothrow?
+        bool                            m_bCreatingControl;
+
+        /// the control we're responsible for
+        ControlHolder                   m_aControl;
+
+        /// the ControlContainer where we inserted our control
+        Reference< XContainer >         m_xContainer;
+
+        /// the output device for which the control was created
+        VclPtr<OutputDevice>            m_pOutputDeviceForWindow;
+
+        /// flag indicating whether the control is currently visible
+        bool                            m_bControlIsVisible;
+
+        /// are we currently listening at a design mode control?
+        bool                            m_bIsDesignModeListening;
+
+        enum ViewControlMode
+        {
+            eDesign,
+            eAlive,
+            eUnknown
+        };
+        /// is the control currently in design mode?
+        mutable ViewControlMode         m_eControlDesignMode;
+
+        ::basegfx::B2DHomMatrix         m_aZoomLevelNormalization;
+
+    public:
+        explicit ViewObjectContactOfUnoControl_Impl( ViewObjectContactOfUnoControl* _pAntiImpl );
+        ViewObjectContactOfUnoControl_Impl(const ViewObjectContactOfUnoControl_Impl&) = delete;
+        ViewObjectContactOfUnoControl_Impl& operator=(const ViewObjectContactOfUnoControl_Impl&) = delete;
+
+        /** disposes the instance, which is nonfunctional afterwards
+        */
+        void dispose();
+
+        /** determines whether the instance is disposed
+        */
+        bool isDisposed() const { return impl_isDisposed_nofail(); }
+
+        /** returns the SdrUnoObject associated with the ViewContact
+
+            @precond
+                We're not disposed.
+        */
+        SdrUnoObj*    getUnoObject() const;
+
+        /** ensures that we have an ->XControl
+
+            Must only be called if a control is needed when no DisplayInfo is present, yet.
+
+            For creating a control, an ->OutputDevice is needed, and an ->SdrPageView. Both will be obtained
+            from a ->ObjectContactOfPageView. So, if our (anti-impl's) object contact is not a ->ObjectContactOfPageView,
+            this method fill fail.
+
+            Failure of this method will be reported via an assertion in a non-product version.
+        */
+        void    ensureControl( const basegfx::B2DHomMatrix* _pInitialViewTransformationOrNULL );
+
+        /** returns our XControl, if it already has been created
+
+            If you want to ensure that the control exists before accessing it, use ->ensureControl
+        */
+        const ControlHolder&
+                getExistentControl() const { return m_aControl; }
+
+        bool
+                hasControl() const { return m_aControl.is(); }
+
+        /** positions our XControl according to the geometry settings in the SdrUnoObj, modified by the given
+            transformation, and sets proper zoom settings according to our device
+
+            @precond
+                ->m_pOutputDeviceForWindow and ->m_aControl are not <NULL/>
+        */
+        void    positionAndZoomControl( const basegfx::B2DHomMatrix& _rViewTransformation ) const;
+
+        /** determines whether or not our control is printable
+
+            Effectively, this method returns the value of the "Printable" property
+            of the control's model. If we have no control, <FALSE/> is returned.
+        */
+        bool    isPrintableControl() const;
+
+        /** sets the design mode on the control, or at least remembers the flag for the
+            time the control is created
+        */
+        void    setControlDesignMode( bool _bDesignMode ) const;
+
+        /** determines whether our control is currently visible
+            @nofail
+        */
+        bool    isControlVisible() const { return m_bControlIsVisible; }
+
+        /// creates an XControl for the given device and SdrUnoObj
+        static bool
+                createControlForDevice(
+                    IPageViewAccess const & _rPageView,
+                    const OutputDevice& _rDevice,
+                    const SdrUnoObj& _rUnoObject,
+                    const basegfx::B2DHomMatrix& _rInitialViewTransformation,
+                    const basegfx::B2DHomMatrix& _rInitialZoomNormalization,
+                    ControlHolder& _out_rControl
+                );
+
+        const ViewContactOfUnoControl&
+                getViewContact() const
+        {
+            ENSURE_OR_THROW( !impl_isDisposed_nofail(), "already disposed" );
+            return static_cast< const ViewContactOfUnoControl& >( m_pAntiImpl->GetViewContact() );
+        }
+
+    protected:
+        virtual ~ViewObjectContactOfUnoControl_Impl() override;
+
+        // XEventListener
+        virtual void SAL_CALL disposing( const EventObject& Source ) override;
+
+        // XWindowListener
+        virtual void SAL_CALL windowResized( const WindowEvent& e ) override;
+        virtual void SAL_CALL windowMoved( const WindowEvent& e ) override;
+        virtual void SAL_CALL windowShown( const EventObject& e ) override;
+        virtual void SAL_CALL windowHidden( const EventObject& e ) override;
+
+        // XPropertyChangeListener
+        virtual void SAL_CALL propertyChange( const PropertyChangeEvent& evt ) override;
+
+        // XModeChangeListener
+        virtual void SAL_CALL modeChanged( const ModeChangeEvent& _rSource ) override;
+
+        // XContainerListener
+        virtual void SAL_CALL elementInserted( const css::container::ContainerEvent& Event ) override;
+        virtual void SAL_CALL elementRemoved( const css::container::ContainerEvent& Event ) override;
+        virtual void SAL_CALL elementReplaced( const css::container::ContainerEvent& Event ) override;
+
+    private:
+        /** retrieves the SdrPageView which our associated SdrPageViewWindow belongs to
+
+            @param out_rpPageView
+                a reference to a pointer holding, upon return, the desired SdrPageView
+
+            @return
+                <TRUE/> if and only if a ->SdrPageView could be obtained
+
+            @precond
+                We really belong to an SdrPageViewWindow. Perhaps (I'm not sure ATM :)
+                there are instance for which this might not be true, but those instances
+                should never have a need to call this method.
+
+            @precond
+                We're not disposed.
+
+            @postcond
+                The method expects success, if it returns with <FALSE/>, this will have been
+                asserted.
+
+            @nothrow
+        */
+        bool    impl_getPageView_nothrow( SdrPageView*& _out_rpPageView );
+
+        /** adjusts the control visibility so it respects its layer's visibility
+
+            @precond
+                ->m_aControl is not <NULL/>
+
+            @precond
+                We're not disposed.
+
+            @precond
+                We really belong to an SdrPageViewWindow. There are instance for which this
+                might not be true, but those instances should never have a need to call
+                this method.
+        */
+        void impl_adjustControlVisibilityToLayerVisibility_throw();
+
+        /** adjusts the control visibility so it respects its layer's visibility
+
+            The control must never be visible if it's in design mode.
+            In alive mode, it must be visibility if and only it's on a visible layer.
+
+            @param _rxControl
+                the control whose visibility is to be adjusted
+
+            @param _rPageView
+                provides access to the attributes of the SdrPageView which the control finally belongs to
+
+            @param _rUnoObject
+                our SdrUnoObj
+
+            @param _bIsCurrentlyVisible
+                determines whether the control is currently visible. Note that this is only a shortcut for
+                querying _rxControl for the XWindow2 interface, and calling isVisible at this interface.
+                This shortcut has been chosen since the caller usually already has this information.
+                If _bForce is <TRUE/>, _bIsCurrentlyVisible is ignored.
+
+            @param _bForce
+                set to <TRUE/> if you want to force a ->XWindow::setVisible call,
+                no matter if the control visibility is already correct
+
+            @precond
+                We're not disposed.
+        */
+        static void impl_adjustControlVisibilityToLayerVisibility_throw( const ControlHolder& _rxControl, const SdrUnoObj& _rUnoObject,
+            IPageViewAccess const & _rPageView, bool _bIsCurrentlyVisible, bool _bForce );
+
+        /** starts or stops listening at various aspects of our control
+
+            @precond
+                ->m_aControl is not <NULL/>
+        */
+        void impl_switchControlListening_nothrow( bool _bStart );
+
+        /** starts or stops listening at our control container
+
+            @precond
+                ->m_xContainer is not <NULL/>
+        */
+        void impl_switchContainerListening_nothrow( bool _bStart );
+
+        /** starts or stops listening at the control for design-mode relevant facets
+        */
+        void impl_switchDesignModeListening_nothrow( bool _bStart );
+
+        /** starts or stops listening for all properties at our control
+
+            @param _bStart
+                determines whether to start or to stop listening
+
+            @precond
+                ->m_aControl is not <NULL/>
+        */
+        void impl_switchPropertyListening_nothrow( bool _bStart );
+
+        /** disposes the instance
+            @param _bAlsoDisposeControl
+                determines whether the XControl should be disposed, too
+        */
+        void impl_dispose_nothrow( bool _bAlsoDisposeControl );
+
+        /** determines whether the instance is disposed
+            @nofail
+        */
+        bool    impl_isDisposed_nofail() const { return m_pAntiImpl == nullptr; }
+
+        /** determines whether the control currently is in design mode
+
+            @precond
+                The design mode must already be known. It is known when we first had access to
+                an SdrPageView (which carries this flag), or somebody explicitly set it from
+                outside.
+        */
+        bool impl_isControlDesignMode_nothrow() const
+        {
+            DBG_ASSERT( m_eControlDesignMode != eUnknown, "ViewObjectContactOfUnoControl_Impl::impl_isControlDesignMode_nothrow: mode is still unknown!" );
+            return m_eControlDesignMode == eDesign;
+        }
+
+        /** ensures that we have a control for the given PageView/OutputDevice
+        */
+        bool impl_ensureControl_nothrow(
+                IPageViewAccess const & _rPageView,
+                const OutputDevice& _rDevice,
+                const basegfx::B2DHomMatrix& _rInitialViewTransformation
+             );
+
+        const OutputDevice& impl_getOutputDevice_throw() const;
+    };
+
+    namespace {
+
+    class LazyControlCreationPrimitive2D : public ::drawinglayer::primitive2d::BufferedDecompositionPrimitive2D
+    {
+    private:
+        typedef ::drawinglayer::primitive2d::BufferedDecompositionPrimitive2D  BufferedDecompositionPrimitive2D;
+
+    protected:
+        virtual void
+            get2DDecomposition(
+                ::drawinglayer::primitive2d::Primitive2DDecompositionVisitor& rVisitor,
+                const ::drawinglayer::geometry::ViewInformation2D& rViewInformation
+            ) const override;
+
+        virtual void create2DDecomposition(
+                ::drawinglayer::primitive2d::Primitive2DContainer& rContainer,
+                const ::drawinglayer::geometry::ViewInformation2D& rViewInformation
+            ) const override;
+
+        virtual ::basegfx::B2DRange
+            getB2DRange(
+                const ::drawinglayer::geometry::ViewInformation2D& rViewInformation
+            ) const override;
+
+    public:
+        explicit LazyControlCreationPrimitive2D( const ::rtl::Reference< ViewObjectContactOfUnoControl_Impl >& _pVOCImpl )
+            :m_pVOCImpl( _pVOCImpl )
+        {
+            ENSURE_OR_THROW( m_pVOCImpl.is(), "Illegal argument." );
+            getTransformation( m_pVOCImpl->getViewContact(), m_aTransformation );
+        }
+
+        virtual bool operator==(const BasePrimitive2D& rPrimitive) const override;
+
+        // declare unique ID for this primitive class
+        virtual sal_uInt32 getPrimitive2DID() const override;
+
+        static void getTransformation( const ViewContactOfUnoControl& _rVOC, ::basegfx::B2DHomMatrix& _out_Transformation );
+
+    private:
+        void impl_positionAndZoomControl( const ::drawinglayer::geometry::ViewInformation2D& _rViewInformation ) const
+        {
+            if ( !_rViewInformation.getViewport().isEmpty() )
+                m_pVOCImpl->positionAndZoomControl( _rViewInformation.getObjectToViewTransformation() );
+        }
+
+    private:
+        ::rtl::Reference< ViewObjectContactOfUnoControl_Impl >  m_pVOCImpl;
+        /** The geometry is part of the identity of a primitive, so we cannot calculate it on demand
+            (since the data the calculation is based on might have changed then), but need to calc
+            it at construction time, and remember it.
+        */
+        ::basegfx::B2DHomMatrix                                 m_aTransformation;
+    };
+
+    }
+
+    ViewObjectContactOfUnoControl_Impl::ViewObjectContactOfUnoControl_Impl( ViewObjectContactOfUnoControl* _pAntiImpl )
+        :m_pAntiImpl( _pAntiImpl )
+        ,m_bCreatingControl( false )
+        ,m_pOutputDeviceForWindow( nullptr )
+        ,m_bControlIsVisible( false )
+        ,m_bIsDesignModeListening( false )
+        ,m_eControlDesignMode( eUnknown )
+    {
+        DBG_ASSERT( m_pAntiImpl, "ViewObjectContactOfUnoControl_Impl::ViewObjectContactOfUnoControl_Impl: invalid AntiImpl!" );
+
+        const OutputDevice& rPageViewDevice( impl_getOutputDevice_throw() );
+        m_aZoomLevelNormalization = rPageViewDevice.GetInverseViewTransformation();
+
+    #if OSL_DEBUG_LEVEL > 0
+        ::basegfx::B2DVector aScale, aTranslate;
+        double fRotate, fShearX;
+        m_aZoomLevelNormalization.decompose( aScale, aTranslate, fRotate, fShearX );
+    #endif
+
+        ::basegfx::B2DHomMatrix aScaleNormalization;
+        const MapMode& aCurrentDeviceMapMode( rPageViewDevice.GetMapMode() );
+        aScaleNormalization.set( 0, 0, static_cast<double>(aCurrentDeviceMapMode.GetScaleX()) );
+        aScaleNormalization.set( 1, 1, static_cast<double>(aCurrentDeviceMapMode.GetScaleY()) );
+        m_aZoomLevelNormalization *= aScaleNormalization;
+
+    #if OSL_DEBUG_LEVEL > 0
+        m_aZoomLevelNormalization.decompose( aScale, aTranslate, fRotate, fShearX );
+    #endif
+   }
+
+
+    ViewObjectContactOfUnoControl_Impl::~ViewObjectContactOfUnoControl_Impl()
+    {
+        if ( !impl_isDisposed_nofail() )
+        {
+            acquire();
+            dispose();
+        }
+
+    }
+
+
+    void ViewObjectContactOfUnoControl_Impl::impl_dispose_nothrow( bool _bAlsoDisposeControl )
+    {
+        if ( impl_isDisposed_nofail() )
+            return;
+
+        if ( m_aControl.is() )
+            impl_switchControlListening_nothrow( false );
+
+        if ( m_xContainer.is() )
+            impl_switchContainerListening_nothrow( false );
+
+        // dispose the control
+        if ( _bAlsoDisposeControl )
+            UnoControlContactHelper::disposeAndClearControl_nothrow( m_aControl );
+
+        m_aControl.clear();
+        m_xContainer.clear();
+        m_pOutputDeviceForWindow = nullptr;
+        m_bControlIsVisible = false;
+
+        m_pAntiImpl = nullptr;
+    }
+
+
+    void ViewObjectContactOfUnoControl_Impl::dispose()
+    {
+        SolarMutexGuard aSolarGuard;
+        impl_dispose_nothrow( true );
+    }
+
+
+    SdrUnoObj* ViewObjectContactOfUnoControl_Impl::getUnoObject() const
+    {
+        OSL_PRECOND( !impl_isDisposed_nofail(), "ViewObjectContactOfUnoControl_Impl::getUnoObject: already disposed()" );
+        if ( impl_isDisposed_nofail() )
+            return nullptr;
+        auto pRet = dynamic_cast< SdrUnoObj* >( m_pAntiImpl->GetViewContact().TryToGetSdrObject() );
+        DBG_ASSERT( pRet || !m_pAntiImpl->GetViewContact().TryToGetSdrObject(),
+            "ViewObjectContactOfUnoControl_Impl::getUnoObject: invalid SdrObject!" );
+        return pRet;
+    }
+
+
+    void ViewObjectContactOfUnoControl_Impl::positionAndZoomControl( const basegfx::B2DHomMatrix& _rViewTransformation ) const
+    {
+        OSL_PRECOND( m_aControl.is(), "ViewObjectContactOfUnoControl_Impl::positionAndZoomControl: no output device or no control!" );
+        if ( !m_aControl.is() )
+            return;
+
+        try
+        {
+            SdrUnoObj* pUnoObject = getUnoObject();
+            if ( pUnoObject )
+            {
+                const tools::Rectangle aRect( pUnoObject->GetLogicRect() );
+                UnoControlContactHelper::adjustControlGeometry_throw( m_aControl, aRect, _rViewTransformation, m_aZoomLevelNormalization );
+            }
+            else
+                OSL_FAIL( "ViewObjectContactOfUnoControl_Impl::positionAndZoomControl: no SdrUnoObj!" );
+        }
+        catch( const Exception& )
+        {
+            DBG_UNHANDLED_EXCEPTION("svx");
+        }
+    }
+
+
+    void ViewObjectContactOfUnoControl_Impl::ensureControl( const basegfx::B2DHomMatrix* _pInitialViewTransformationOrNULL )
+    {
+        OSL_PRECOND( !impl_isDisposed_nofail(), "ViewObjectContactOfUnoControl_Impl::ensureControl: already disposed()" );
+        if ( impl_isDisposed_nofail() )
+            return;
+
+        ObjectContactOfPageView* pPageViewContact = dynamic_cast< ObjectContactOfPageView* >( &m_pAntiImpl->GetObjectContact() );
+        if ( pPageViewContact )
+        {
+            SdrPageViewAccess aPVAccess( pPageViewContact->GetPageWindow().GetPageView() );
+            const OutputDevice& rDevice( *m_pAntiImpl->getPageViewOutputDevice() );
+            impl_ensureControl_nothrow(
+                aPVAccess,
+                rDevice,
+                _pInitialViewTransformationOrNULL ? *_pInitialViewTransformationOrNULL : rDevice.GetViewTransformation()
+            );
+            return;
+        }
+
+        DummyPageViewAccess aNoPageView;
+        const OutputDevice& rDevice( impl_getOutputDevice_throw() );
+        impl_ensureControl_nothrow(
+            aNoPageView,
+            rDevice,
+            _pInitialViewTransformationOrNULL ? *_pInitialViewTransformationOrNULL : rDevice.GetViewTransformation()
+        );
+    }
+
+
+    const OutputDevice& ViewObjectContactOfUnoControl_Impl::impl_getOutputDevice_throw() const
+    {
+        // do not use ObjectContact::TryToGetOutputDevice, it would not care for the PageWindow's
+        // OriginalPaintWindow
+        const OutputDevice* oPageOutputDev = m_pAntiImpl->getPageViewOutputDevice();
+        if( oPageOutputDev )
+            return *oPageOutputDev;
+
+        const OutputDevice* pDevice = m_pAntiImpl->GetObjectContact().TryToGetOutputDevice();
+        ENSURE_OR_THROW( pDevice, "no output device -> no control" );
+        return *pDevice;
+    }
+
+
+    namespace
+    {
+        void lcl_resetFlag( bool& rbFlag )
+        {
+            rbFlag = false;
+        }
+    }
+
+
+    bool ViewObjectContactOfUnoControl_Impl::impl_ensureControl_nothrow( IPageViewAccess const & _rPageView, const OutputDevice& _rDevice,
+        const basegfx::B2DHomMatrix& _rInitialViewTransformation )
+    {
+        if ( m_bCreatingControl )
+        {
+            OSL_FAIL( "ViewObjectContactOfUnoControl_Impl::impl_ensureControl_nothrow: reentrance is not really good here!" );
+            // We once had a situation where this was called reentrantly, which lead to all kind of strange effects. All
+            // those affected the grid control, which is the only control so far which is visible in design mode (and
+            // not only in alive mode).
+            // Creating the control triggered a Window::Update on some of its child windows, which triggered a
+            // Paint on parent of the grid control (e.g. the SwEditWin), which triggered a reentrant call to this method,
+            // which it is not really prepared for.
+
+            // /me thinks that re-entrance should be caught on a higher level, i.e. the Drawing Layer should not allow
+            // reentrant paint requests. For the moment, until /me can discuss this with AW, catch it here. #i104544#
+            return false;
+        }
+
+        m_bCreatingControl = true;
+        ::comphelper::ScopeGuard aGuard([&] () { lcl_resetFlag(m_bCreatingControl); });
+
+        if ( m_aControl.is() )
+        {
+            if ( m_pOutputDeviceForWindow.get() == &_rDevice )
+                return true;
+
+            // Somebody requested a control for a new device, which means either of
+            // - our PageView's paint window changed since we were last here
+            // - we don't belong to a page view, and are simply painted onto different devices
+            // The first sounds strange (doesn't it?), the second means we could perhaps
+            // optimize this in the future - there is no need to re-create the control every time,
+            // is it? #i74523#
+            if ( m_xContainer.is() )
+                impl_switchContainerListening_nothrow( false );
+            impl_switchControlListening_nothrow( false );
+            UnoControlContactHelper::disposeAndClearControl_nothrow( m_aControl );
+        }
+
+        SdrUnoObj* pUnoObject = getUnoObject();
+        if ( !pUnoObject )
+            return false;
+
+        ControlHolder aControl;
+        if ( !createControlForDevice( _rPageView, _rDevice, *pUnoObject, _rInitialViewTransformation, m_aZoomLevelNormalization, aControl ) )
+            return false;
+
+        m_pOutputDeviceForWindow = const_cast< OutputDevice * >( &_rDevice );
+        m_aControl = aControl;
+        m_xContainer.set(_rPageView.getControlContainer( _rDevice ), css::uno::UNO_QUERY);
+        DBG_ASSERT( (   m_xContainer.is()                                           // either have a XControlContainer
+                    ||  (   ( !_rPageView.getControlContainer( _rDevice ).is() )    // or don't have any container,
+                        &&  ( _rDevice.GetOwnerWindow() == nullptr )  // which is allowed for non-Window instances only
+                        )
+                    ),
+            "ViewObjectContactOfUnoControl_Impl::impl_ensureControl_nothrow: no XContainer at the ControlContainer!" );
+
+        try
+        {
+            m_eControlDesignMode = m_aControl.isDesignMode() ? eDesign : eAlive;
+            m_bControlIsVisible = m_aControl.isVisible();
+        }
+        catch( const Exception& )
+        {
+            DBG_UNHANDLED_EXCEPTION("svx");
+        }
+
+        // start listening at all aspects of the control which are interesting to us ...
+        impl_switchControlListening_nothrow( true );
+
+        // start listening at the control container, in case somebody tampers with our control
+        if ( m_xContainer.is() )
+            impl_switchContainerListening_nothrow( true );
+
+        return m_aControl.is();
+    }
+
+
+    bool ViewObjectContactOfUnoControl_Impl::createControlForDevice( IPageViewAccess const & _rPageView,
+        const OutputDevice& _rDevice, const SdrUnoObj& _rUnoObject, const basegfx::B2DHomMatrix& _rInitialViewTransformation,
+        const basegfx::B2DHomMatrix& _rInitialZoomNormalization, ControlHolder& _out_rControl )
+    {
+        _out_rControl.clear();
+
+        const Reference< XControlModel >& xControlModel( _rUnoObject.GetUnoControlModel() );
+        DBG_ASSERT( xControlModel.is(), "ViewObjectContactOfUnoControl_Impl::createControlForDevice: no control model at the SdrUnoObject!?" );
+        if ( !xControlModel.is() )
+            return false;
+
+        bool bSuccess = false;
+        try
+        {
+            const OUString& sControlServiceName( _rUnoObject.GetUnoControlTypeName() );
+
+            Reference< css::uno::XComponentContext > xContext = ::comphelper::getProcessComponentContext();
+            _out_rControl = Reference<XControl>( xContext->getServiceManager()->createInstanceWithContext(sControlServiceName, xContext), UNO_QUERY_THROW );
+
+            // knit the model and the control
+            _out_rControl.setModel( xControlModel );
+            const tools::Rectangle aRect( _rUnoObject.GetLogicRect() );
+
+            // proper geometry
+            UnoControlContactHelper::adjustControlGeometry_throw(
+                _out_rControl,
+                aRect,
+                _rInitialViewTransformation,
+                _rInitialZoomNormalization
+            );
+
+            // set design mode before peer is created,
+            // this is also needed for accessibility
+            _out_rControl.setDesignMode( _rPageView.isDesignMode() );
+
+            // adjust the initial visibility according to the visibility of the layer
+            impl_adjustControlVisibilityToLayerVisibility_throw( _out_rControl, _rUnoObject, _rPageView, false, true );
+
+            // add the control to the respective control container
+            // do this last
+            Reference< XControlContainer > xControlContainer( _rPageView.getControlContainer( _rDevice ) );
+            if ( xControlContainer.is() )
+                xControlContainer->addControl( sControlServiceName, _out_rControl.getControl() );
+
+            bSuccess = true;
+        }
+        catch( const Exception& )
+        {
+            DBG_UNHANDLED_EXCEPTION("svx");
+        }
+
+        if ( !bSuccess )
+        {
+            // delete the control which might have been created already
+            UnoControlContactHelper::disposeAndClearControl_nothrow( _out_rControl );
+        }
+
+        return _out_rControl.is();
+    }
+
+
+    bool ViewObjectContactOfUnoControl_Impl::impl_getPageView_nothrow( SdrPageView*& _out_rpPageView )
+    {
+        OSL_PRECOND( !impl_isDisposed_nofail(), "ViewObjectContactOfUnoControl_Impl::impl_getPageView_nothrow: already disposed!" );
+
+        _out_rpPageView = nullptr;
+        if ( impl_isDisposed_nofail() )
+            return false;
+
+        ObjectContactOfPageView* pPageViewContact = dynamic_cast< ObjectContactOfPageView* >( &m_pAntiImpl->GetObjectContact() );
+        if ( pPageViewContact )
+            _out_rpPageView = &pPageViewContact->GetPageWindow().GetPageView();
+
+        DBG_ASSERT( _out_rpPageView != nullptr, "ViewObjectContactOfUnoControl_Impl::impl_getPageView_nothrow: this method is expected to always have success!" );
+        return ( _out_rpPageView != nullptr );
+    }
+
+
+    void ViewObjectContactOfUnoControl_Impl::impl_adjustControlVisibilityToLayerVisibility_throw()
+    {
+        OSL_PRECOND( m_aControl.is(),
+            "ViewObjectContactOfUnoControl_Impl::impl_adjustControlVisibilityToLayerVisibility_throw: only valid if we have a control!" );
+
+        SdrPageView* pPageView( nullptr );
+        if ( !impl_getPageView_nothrow( pPageView ) )
+            return;
+
+        SdrUnoObj* pUnoObject = getUnoObject();
+        if ( !pUnoObject )
+            return;
+
+        SdrPageViewAccess aPVAccess( *pPageView );
+        impl_adjustControlVisibilityToLayerVisibility_throw( m_aControl, *pUnoObject, aPVAccess, m_bControlIsVisible, false/*_bForce*/ );
+    }
+
+
+    void ViewObjectContactOfUnoControl_Impl::impl_adjustControlVisibilityToLayerVisibility_throw( const ControlHolder& _rControl,
+        const SdrUnoObj& _rUnoObject, IPageViewAccess const & _rPageView, bool _bIsCurrentlyVisible, bool _bForce )
+    {
+        // in design mode, there is no problem with the visibility: The XControl is hidden by
+        // default, and the Drawing Layer will simply not call our paint routine, if we're in
+        // a hidden layer. So, only alive mode matters.
+        if ( !_rControl.isDesignMode() )
+        {
+            // the layer of our object
+            SdrLayerID nObjectLayer = _rUnoObject.GetLayer();
+            // is the object we're residing in visible in this view?
+            bool bIsObjectVisible = _rUnoObject.IsVisible() && _rPageView.isLayerVisible( nObjectLayer );
+
+            if ( _bForce || ( bIsObjectVisible != _bIsCurrentlyVisible ) )
+            {
+                _rControl.setVisible( bIsObjectVisible );
+            }
+        }
+    }
+
+
+    void ViewObjectContactOfUnoControl_Impl::impl_switchContainerListening_nothrow( bool _bStart )
+    {
+        OSL_PRECOND( m_xContainer.is(), "ViewObjectContactOfUnoControl_Impl::impl_switchContainerListening_nothrow: no control container!" );
+        if ( !m_xContainer.is() )
+            return;
+
+        try
+        {
+            if ( _bStart )
+                m_xContainer->addContainerListener( this );
+            else
+                m_xContainer->removeContainerListener( this );
+        }
+        catch( const Exception& )
+        {
+            DBG_UNHANDLED_EXCEPTION("svx");
+        }
+    }
+
+
+    void ViewObjectContactOfUnoControl_Impl::impl_switchControlListening_nothrow( bool _bStart )
+    {
+        OSL_PRECOND( m_aControl.is(), "ViewObjectContactOfUnoControl_Impl::impl_switchControlListening_nothrow: invalid control!" );
+        if ( !m_aControl.is() )
+            return;
+
+        try
+        {
+            // listen for visibility changes
+            if ( _bStart )
+                m_aControl.addWindowListener( this );
+            else
+                m_aControl.removeWindowListener( this );
+
+            // in design mode, listen for some more aspects
+            impl_switchDesignModeListening_nothrow( impl_isControlDesignMode_nothrow() && _bStart );
+
+            // listen for design mode changes
+            Reference< XModeChangeBroadcaster > xDesignModeChanges( m_aControl.getControl(), UNO_QUERY_THROW );
+            if ( _bStart )
+                xDesignModeChanges->addModeChangeListener( this );
+            else
+                xDesignModeChanges->removeModeChangeListener( this );
+        }
+        catch( const Exception& )
+        {
+            DBG_UNHANDLED_EXCEPTION("svx");
+        }
+    }
+
+
+    void ViewObjectContactOfUnoControl_Impl::impl_switchDesignModeListening_nothrow( bool _bStart )
+    {
+        if ( m_bIsDesignModeListening != _bStart )
+        {
+            m_bIsDesignModeListening = _bStart;
+            impl_switchPropertyListening_nothrow( _bStart );
+        }
+    }
+
+
+    void ViewObjectContactOfUnoControl_Impl::impl_switchPropertyListening_nothrow( bool _bStart )
+    {
+        OSL_PRECOND( m_aControl.is(), "ViewObjectContactOfUnoControl_Impl::impl_switchPropertyListening_nothrow: no control!" );
+        if ( !m_aControl.is() )
+            return;
+
+        try
+        {
+            Reference< XPropertySet > xModelProperties( m_aControl.getModel(), UNO_QUERY_THROW );
+            if ( _bStart )
+                xModelProperties->addPropertyChangeListener( OUString(), this );
+            else
+                xModelProperties->removePropertyChangeListener( OUString(), this );
+        }
+        catch( const Exception& )
+        {
+            DBG_UNHANDLED_EXCEPTION("svx");
+        }
+    }
+
+
+    bool ViewObjectContactOfUnoControl_Impl::isPrintableControl() const
+    {
+        SdrUnoObj* pUnoObject = getUnoObject();
+        if ( !pUnoObject )
+            return false;
+
+        bool bIsPrintable = false;
+        try
+        {
+            Reference< XPropertySet > xModelProperties( pUnoObject->GetUnoControlModel(), UNO_QUERY_THROW );
+            OSL_VERIFY( xModelProperties->getPropertyValue( "Printable" ) >>= bIsPrintable );
+        }
+        catch( const Exception& )
+        {
+            DBG_UNHANDLED_EXCEPTION("svx");
+        }
+        return bIsPrintable;
+    }
+
+
+    void SAL_CALL ViewObjectContactOfUnoControl_Impl::disposing( const EventObject& Source )
+    {
+        SolarMutexGuard aSolarGuard;
+            // some code below - in particular our disposal - might trigger actions which require the
+            // SolarMutex. In particular, in our disposal, we remove ourself as listener from the control,
+            // which alone needs the SolarMutex. Of course this - a removeFooListener needed the SolarMutex -
+            // is the real bug. Toolkit really is infested with solar mutex usage ... :( #i82169#
+
+        if ( !m_aControl.is() )
+            return;
+
+        if  (   ( m_aControl            == Source.Source )
+            ||  ( m_aControl.getModel() == Source.Source )
+            )
+        {
+            // the model or the control is dying ... hmm, not much sense in that we ourself continue
+            // living
+            impl_dispose_nothrow( false );
+            return;
+        }
+
+        DBG_ASSERT( Source.Source == m_xContainer, "ViewObjectContactOfUnoControl_Impl::disposing: Who's this?" );
+    }
+
+
+    void SAL_CALL ViewObjectContactOfUnoControl_Impl::windowResized( const WindowEvent& /*e*/ )
+    {
+        // not interested in
+    }
+
+
+    void SAL_CALL ViewObjectContactOfUnoControl_Impl::windowMoved( const WindowEvent& /*e*/ )
+    {
+        // not interested in
+    }
+
+
+    void SAL_CALL ViewObjectContactOfUnoControl_Impl::windowShown( const EventObject& /*e*/ )
+    {
+        SolarMutexGuard aSolarGuard;
+        m_bControlIsVisible = true;
+    }
+
+
+    void SAL_CALL ViewObjectContactOfUnoControl_Impl::windowHidden( const EventObject& /*e*/ )
+    {
+        SolarMutexGuard aSolarGuard;
+        m_bControlIsVisible = false;
+    }
+
+
+    void SAL_CALL ViewObjectContactOfUnoControl_Impl::propertyChange( const PropertyChangeEvent& /*_rEvent*/ )
+    {
+        SolarMutexGuard aSolarGuard;
+            // (re)painting might require VCL operations, which need the SolarMutex
+
+        OSL_PRECOND( !impl_isDisposed_nofail(), "ViewObjectContactOfUnoControl_Impl::propertyChange: already disposed()" );
+        if ( impl_isDisposed_nofail() )
+            return;
+
+        DBG_ASSERT( m_aControl.is(), "ViewObjectContactOfUnoControl_Impl::propertyChange: " );
+        if ( !m_aControl.is() )
+            return;
+
+        // a generic property changed. If we're in design mode, we need to repaint the control
+        if ( impl_isControlDesignMode_nothrow() )
+        {
+            m_pAntiImpl->propertyChange();
+        }
+    }
+
+
+    void SAL_CALL ViewObjectContactOfUnoControl_Impl::modeChanged( const ModeChangeEvent& _rSource )
+    {
+        SolarMutexGuard aSolarGuard;
+
+        DBG_ASSERT( _rSource.NewMode == "design" || _rSource.NewMode == "alive", "ViewObjectContactOfUnoControl_Impl::modeChanged: unexpected mode!" );
+
+        m_eControlDesignMode = _rSource.NewMode == "design" ? eDesign : eAlive;
+
+        impl_switchDesignModeListening_nothrow( impl_isControlDesignMode_nothrow() );
+
+        try
+        {
+            // if the control is part of an invisible layer, we need to explicitly hide it in alive mode
+            impl_adjustControlVisibilityToLayerVisibility_throw();
+        }
+        catch( const Exception& )
+        {
+            DBG_UNHANDLED_EXCEPTION("svx");
+        }
+    }
+
+
+    void SAL_CALL ViewObjectContactOfUnoControl_Impl::elementInserted( const ContainerEvent& /*_Event*/ )
+    {
+        // not interested in
+    }
+
+
+    void SAL_CALL ViewObjectContactOfUnoControl_Impl::elementRemoved( const ContainerEvent& Event )
+    {
+        SolarMutexGuard aSolarGuard;
+            // some code below - in particular our disposal - might trigger actions which require the
+            // SolarMutex. In particular, in our disposal, we remove ourself as listener from the control,
+            // which alone needs the SolarMutex. Of course this - a removeFooListener needed the SolarMutex -
+            // is the real bug. Toolkit really is infested with solar mutex usage ... :( #i82169#
+        DBG_ASSERT( Event.Source == m_xContainer, "ViewObjectContactOfUnoControl_Impl::elementRemoved: where did this come from?" );
+
+        if ( m_aControl == Event.Element )
+            impl_dispose_nothrow( false );
+    }
+
+
+    void SAL_CALL ViewObjectContactOfUnoControl_Impl::elementReplaced( const ContainerEvent& Event )
+    {
+        SolarMutexGuard aSolarGuard;
+        DBG_ASSERT( Event.Source == m_xContainer, "ViewObjectContactOfUnoControl_Impl::elementReplaced: where did this come from?" );
+
+        if ( ! ( m_aControl == Event.ReplacedElement ) )
+            return;
+
+        Reference< XControl > xNewControl( Event.Element, UNO_QUERY );
+        DBG_ASSERT( xNewControl.is(), "ViewObjectContactOfUnoControl_Impl::elementReplaced: invalid new control!" );
+        if ( !xNewControl.is() )
+            return;
+
+        ENSURE_OR_THROW( m_pOutputDeviceForWindow, "calling this without /me having an output device should be impossible." );
+
+        DBG_ASSERT( xNewControl->getModel() == m_aControl.getModel(), "ViewObjectContactOfUnoControl_Impl::elementReplaced: another model at the new control?" );
+        // another model should - in the drawing layer - also imply another SdrUnoObj, which
+        // should also result in new ViewContact, and thus in new ViewObjectContacts
+
+        impl_switchControlListening_nothrow( false );
+
+        ControlHolder aNewControl( xNewControl );
+        aNewControl.setZoom( m_aControl.getZoom() );
+        aNewControl.setPosSize( m_aControl.getPosSize() );
+        aNewControl.setDesignMode( impl_isControlDesignMode_nothrow() );
+
+        m_aControl = xNewControl;
+        m_bControlIsVisible = m_aControl.isVisible();
+
+        impl_switchControlListening_nothrow( true );
+
+        m_pAntiImpl->onControlChangedOrModified( ViewObjectContactOfUnoControl::ImplAccess() );
+    }
+
+
+    void ViewObjectContactOfUnoControl_Impl::setControlDesignMode( bool _bDesignMode ) const
+    {
+        if ( ( m_eControlDesignMode != eUnknown ) && ( _bDesignMode == impl_isControlDesignMode_nothrow() ) )
+            // nothing to do
+            return;
+        m_eControlDesignMode = _bDesignMode ? eDesign : eAlive;
+
+        if ( !m_aControl.is() )
+            // nothing to do, the setting will be respected as soon as the control
+            // is created
+            return;
+
+        try
+        {
+            m_aControl.setDesignMode( _bDesignMode );
+        }
+        catch( const Exception& )
+        {
+            DBG_UNHANDLED_EXCEPTION("svx");
+        }
+    }
+
+
+    //= LazyControlCreationPrimitive2D
+
+
+    bool LazyControlCreationPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
+    {
+        if ( !BufferedDecompositionPrimitive2D::operator==( rPrimitive ) )
+            return false;
+
+        const LazyControlCreationPrimitive2D* pRHS = dynamic_cast< const LazyControlCreationPrimitive2D* >( &rPrimitive );
+        if ( !pRHS )
+            return false;
+
+        if ( m_pVOCImpl != pRHS->m_pVOCImpl )
+            return false;
+
+        if ( m_aTransformation != pRHS->m_aTransformation )
+            return false;
+
+        return true;
+    }
+
+
+    void LazyControlCreationPrimitive2D::getTransformation( const ViewContactOfUnoControl& _rVOC, ::basegfx::B2DHomMatrix& _out_Transformation )
+    {
+        // Do use model data directly to create the correct geometry. Do NOT
+        // use getBoundRect()/getSnapRect() here; these will use the sequence of
+        // primitives themselves in the long run.
+        const tools::Rectangle aSdrGeoData( _rVOC.GetSdrUnoObj().GetGeoRect() );
+        const basegfx::B2DRange aRange = vcl::unotools::b2DRectangleFromRectangle(aSdrGeoData);
+
+        _out_Transformation.identity();
+        _out_Transformation.set( 0, 0, aRange.getWidth() );
+        _out_Transformation.set( 1, 1, aRange.getHeight() );
+        _out_Transformation.set( 0, 2, aRange.getMinX() );
+        _out_Transformation.set( 1, 2, aRange.getMinY() );
+    }
+
+
+    ::basegfx::B2DRange LazyControlCreationPrimitive2D::getB2DRange( const ::drawinglayer::geometry::ViewInformation2D& /*rViewInformation*/ ) const
+    {
+        ::basegfx::B2DRange aRange( 0.0, 0.0, 1.0, 1.0 );
+        aRange.transform( m_aTransformation );
+        return aRange;
+    }
+
+
+    void LazyControlCreationPrimitive2D::get2DDecomposition( ::drawinglayer::primitive2d::Primitive2DDecompositionVisitor& rVisitor, const ::drawinglayer::geometry::ViewInformation2D& _rViewInformation ) const
+    {
+    #if OSL_DEBUG_LEVEL > 0
+        ::basegfx::B2DVector aScale, aTranslate;
+        double fRotate, fShearX;
+        _rViewInformation.getObjectToViewTransformation().decompose( aScale, aTranslate, fRotate, fShearX );
+    #endif
+        if ( m_pVOCImpl->hasControl() )
+            impl_positionAndZoomControl( _rViewInformation );
+        BufferedDecompositionPrimitive2D::get2DDecomposition( rVisitor, _rViewInformation );
+    }
+
+
+    void LazyControlCreationPrimitive2D::create2DDecomposition( ::drawinglayer::primitive2d::Primitive2DContainer& rContainer, const ::drawinglayer::geometry::ViewInformation2D& _rViewInformation ) const
+    {
+    #if OSL_DEBUG_LEVEL > 0
+        ::basegfx::B2DVector aScale, aTranslate;
+        double fRotate, fShearX;
+        _rViewInformation.getObjectToViewTransformation().decompose( aScale, aTranslate, fRotate, fShearX );
+    #endif
+        const bool bHadControl = m_pVOCImpl->getExistentControl().is();
+
+        // force control here to make it a VCL ChildWindow. Will be fetched
+        // and used below by getExistentControl()
+        m_pVOCImpl->ensureControl( &_rViewInformation.getObjectToViewTransformation() );
+        impl_positionAndZoomControl( _rViewInformation );
+
+        // get needed data
+        const ViewContactOfUnoControl& rViewContactOfUnoControl( m_pVOCImpl->getViewContact() );
+        Reference< XControlModel > xControlModel( rViewContactOfUnoControl.GetSdrUnoObj().GetUnoControlModel() );
+        const ControlHolder& rControl( m_pVOCImpl->getExistentControl() );
+
+        if ( !bHadControl && rControl.is() && rControl.isVisible() )
+            rControl.invalidate();
+
+        // check if we already have an XControl.
+        if ( !xControlModel.is() || !rControl.is() )
+        {
+            // use the default mechanism. This will create a ControlPrimitive2D without
+            // handing over a XControl. If not even a XControlModel exists, it will
+            // create the SdrObject fallback visualisation
+            rViewContactOfUnoControl.getViewIndependentPrimitive2DContainer(rContainer);
+            return;
+        }
+
+        // create a primitive and hand over the existing xControl. This will
+        // allow the primitive to not need to create another one on demand.
+        rContainer.push_back( new ::drawinglayer::primitive2d::ControlPrimitive2D(
+            m_aTransformation, xControlModel, rControl.getControl() ) );
+    }
+
+    sal_uInt32 LazyControlCreationPrimitive2D::getPrimitive2DID() const
+    {
+        return PRIMITIVE2D_ID_SDRCONTROLPRIMITIVE2D;
+    }
+
+    ViewObjectContactOfUnoControl::ViewObjectContactOfUnoControl( ObjectContact& _rObjectContact, ViewContactOfUnoControl& _rViewContact )
+        :ViewObjectContactOfSdrObj( _rObjectContact, _rViewContact )
+        ,m_pImpl( new ViewObjectContactOfUnoControl_Impl( this ) )
+    {
+    }
+
+
+    ViewObjectContactOfUnoControl::~ViewObjectContactOfUnoControl()
+    {
+        m_pImpl->dispose();
+        m_pImpl = nullptr;
+
+    }
+
+
+    Reference< XControl > ViewObjectContactOfUnoControl::getControl()
+    {
+        SolarMutexGuard aSolarGuard;
+        m_pImpl->ensureControl( nullptr );
+        return m_pImpl->getExistentControl().getControl();
+    }
+
+
+    Reference< XControl > ViewObjectContactOfUnoControl::getTemporaryControlForWindow(
+        const vcl::Window& _rWindow, Reference< XControlContainer >& _inout_ControlContainer, const SdrUnoObj& _rUnoObject )
+    {
+        ControlHolder aControl;
+
+        InvisibleControlViewAccess aSimulatePageView( _inout_ControlContainer );
+        OSL_VERIFY( ViewObjectContactOfUnoControl_Impl::createControlForDevice( aSimulatePageView, *_rWindow.GetOutDev(), _rUnoObject,
+            _rWindow.GetOutDev()->GetViewTransformation(), _rWindow.GetOutDev()->GetInverseViewTransformation(), aControl ) );
+        return aControl.getControl();
+    }
+
+
+    void ViewObjectContactOfUnoControl::ensureControlVisibility( bool _bVisible ) const
+    {
+        SolarMutexGuard aSolarGuard;
+
+        try
+        {
+            const ControlHolder& rControl( m_pImpl->getExistentControl() );
+            if ( !rControl.is() )
+                return;
+
+            // only need to care for alive mode
+            if ( rControl.isDesignMode() )
+                return;
+
+            // is the visibility correct?
+            if ( m_pImpl->isControlVisible() == _bVisible )
+                return;
+
+            // no -> adjust it
+            rControl.setVisible( _bVisible );
+            DBG_ASSERT( m_pImpl->isControlVisible() == _bVisible, "ViewObjectContactOfUnoControl::ensureControlVisibility: this didn't work!" );
+                // now this would mean that either isControlVisible is not reliable,
+                // or that showing/hiding the window did not work as intended.
+        }
+        catch( const Exception& )
+        {
+            DBG_UNHANDLED_EXCEPTION("svx");
+        }
+    }
+
+
+    void ViewObjectContactOfUnoControl::setControlDesignMode( bool _bDesignMode ) const
+    {
+        SolarMutexGuard aSolarGuard;
+        m_pImpl->setControlDesignMode( _bDesignMode );
+
+        if(!_bDesignMode)
+        {
+            // when live mode is switched on, a refresh is needed. The edit mode visualisation
+            // needs to be repainted and the now used VCL-Window needs to be positioned and
+            // sized. Both is done from the repaint refresh.
+            const_cast< ViewObjectContactOfUnoControl* >(this)->ActionChanged();
+        }
+    }
+
+
+    void ViewObjectContactOfUnoControl::createPrimitive2DSequence(const DisplayInfo& /*rDisplayInfo*/, drawinglayer::primitive2d::Primitive2DDecompositionVisitor& rVisitor) const
+    {
+        if ( m_pImpl->isDisposed() )
+            // our control already died.
+            // TODO: Is it worth re-creating the control? Finally, this is a pathological situation, it means some instance
+            // disposed the control though it doesn't own it. So, /me thinks we should not bother here.
+            return;
+
+        if ( GetObjectContact().getViewInformation2D().getViewTransformation().isIdentity() )
+            // remove this when #i115754# is fixed
+            return;
+
+        // ignore existing controls which are in alive mode and manually switched to "invisible" #i102090#
+        const ControlHolder& rControl( m_pImpl->getExistentControl() );
+        if ( rControl.is() && !rControl.isDesignMode() && !rControl.isVisible() )
+            return;
+
+        rVisitor.visit( new LazyControlCreationPrimitive2D( m_pImpl ) );
+    }
+
+
+    bool ViewObjectContactOfUnoControl::isPrimitiveVisible( const DisplayInfo& _rDisplayInfo ) const
+    {
+        SolarMutexGuard aSolarGuard;
+
+        if ( m_pImpl->hasControl() )
+        {
+            const ::drawinglayer::geometry::ViewInformation2D& rViewInformation( GetObjectContact().getViewInformation2D() );
+        #if OSL_DEBUG_LEVEL > 0
+            ::basegfx::B2DVector aScale, aTranslate;
+            double fRotate, fShearX;
+            rViewInformation.getObjectToViewTransformation().decompose( aScale, aTranslate, fRotate, fShearX );
+        #endif
+
+            if ( !rViewInformation.getViewport().isEmpty() )
+            {
+                // tdf#121963 check and eventually pre-multiply ViewTransformation
+                // with GridOffset transformation to avoid alternating positions of
+                // FormControls which are victims of the non-linear calc ViewTransformation
+                // aka GridOffset. For other paths (e.g. repaint) this is included already
+                // as part of the object's sequence of B2DPrimitive - representation
+                // (see ViewObjectContact::getPrimitive2DSequence and how getGridOffset is used there)
+                basegfx::B2DHomMatrix aViewTransformation(rViewInformation.getObjectToViewTransformation());
+
+                if(GetObjectContact().supportsGridOffsets())
+                {
+                    const basegfx::B2DVector& rGridOffset(getGridOffset());
+
+                    if(0.0 != rGridOffset.getX() || 0.0 != rGridOffset.getY())
+                    {
+                        // pre-multiply: GridOffset needs to be applied directly to logic model data
+                        // of object coordinates, so multiply GridOffset from right to make it
+                        // work as 1st change - these objects may still be part of groups/hierarchies
+                        aViewTransformation = aViewTransformation * basegfx::utils::createTranslateB2DHomMatrix(rGridOffset);
+                    }
+                }
+
+                m_pImpl->positionAndZoomControl(aViewTransformation);
+            }
+        }
+
+        return ViewObjectContactOfSdrObj::isPrimitiveVisible( _rDisplayInfo );
+    }
+
+
+    void ViewObjectContactOfUnoControl::propertyChange()
+    {
+        impl_onControlChangedOrModified();
+    }
+
+
+    void ViewObjectContactOfUnoControl::ActionChanged()
+    {
+        // call parent
+        ViewObjectContactOfSdrObj::ActionChanged();
+        const ControlHolder& rControl(m_pImpl->getExistentControl());
+
+        if(!rControl.is() || rControl.isDesignMode())
+            return;
+
+        // #i93180# if layer visibility has changed and control is in live mode, it is necessary
+        // to correct visibility to make those control vanish on SdrObject LayerID changes
+        const SdrPageView* pSdrPageView = GetObjectContact().TryToGetSdrPageView();
+
+        if(pSdrPageView)
+        {
+            const SdrObject& rObject = getSdrObject();
+            const bool bIsLayerVisible( rObject.IsVisible() && pSdrPageView->GetVisibleLayers().IsSet(rObject.GetLayer()));
+
+            if(rControl.isVisible() != bIsLayerVisible)
+            {
+                rControl.setVisible(bIsLayerVisible);
+            }
+        }
+    }
+
+
+    void ViewObjectContactOfUnoControl::impl_onControlChangedOrModified()
+    {
+        // graphical invalidate at all views
+        ActionChanged();
+
+        // #i93318# flush Primitive2DContainer to force recreation with updated XControlModel
+        // since e.g. background color has changed and existing decompositions are possibly no
+        // longer valid. Unfortunately this is not detected from ControlPrimitive2D::operator==
+        // since it only has a uno reference to the XControlModel
+        flushPrimitive2DSequence();
+    }
+
+    UnoControlPrintOrPreviewContact::UnoControlPrintOrPreviewContact( ObjectContactOfPageView& _rObjectContact, ViewContactOfUnoControl& _rViewContact )
+        :ViewObjectContactOfUnoControl( _rObjectContact, _rViewContact )
+    {
+    }
+
+
+    UnoControlPrintOrPreviewContact::~UnoControlPrintOrPreviewContact()
+    {
+    }
+
+
+    void UnoControlPrintOrPreviewContact::createPrimitive2DSequence(const DisplayInfo& rDisplayInfo, drawinglayer::primitive2d::Primitive2DDecompositionVisitor& rVisitor ) const
+    {
+        if ( !m_pImpl->isPrintableControl() )
+            return;
+        ViewObjectContactOfUnoControl::createPrimitive2DSequence( rDisplayInfo, rVisitor );
+    }
+
+
+} // namespace sdr::contact
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */