CWS-TOOLING: integrate CWS dba32c

2009-06-29 20:53:25 +0200 fs  r273484 : #i103138# Rectangle conversion
2009-06-29 20:51:50 +0200 fs  r273483 : #i103138# yet more refactoring, now also setting the proper zoom level at the proper point in time
2009-06-29 13:40:26 +0200 fs  r273470 : added svn:ignore to ignore output paths
2009-06-29 10:08:54 +0200 fs  r273455 : #i103138#
refactored the code for positioning/zooming the control
Basically, we now allow adjustControlGeometry_throw (formerly known as positionControl_throw and setControlZoom) to
take an additional ViewTransformation parameter, describing the transformation to obtain the actual
control position/size. Consequently, positionControl itself also allows for a ViewTransformation parameter.
This has become necessary since during painting, the device which we created our control for might not necessarily
have a proper MapMode set. In this case, if we would use this map mode for calculating the control's position/size,
this would lead to wrong results.
Note that this problem was introduced by the fix for #i101398#: During the fix, we postponed the control creation
to a later time (when it is really needed). At this later time, the MapMode at the device is broken, at the earlier
time where we formerly crearted the control (createPrimitive2DSequence), it is not yet broken.
Whether or not the MapMode is defined as "broken" might depend on one's point of view, however ...
I consider it broken, since:
- we need the map mode to obtain the proper zoom level, which is to be forwarded to the control
- there are scenarios where the MapMode is *not* set to MAP_PIXEL (in those scenarios, everything works
fine), and there are scenarios where it *is* set to MAP_PIXEL (in those the bug 103138 appears).
It somehow feels wrong that one cannot rely on the device's map mode this way, but on the other hand
one has no possibility to obtain the current zoom by other means.
Note that one issue (still to be submitted) is left: In the page pane of a Draw/Impress document, controls
have a wrong text size. This is because in this pane, the above-mentioned "broken" map mode is used,
which means the controls have a zoom of "1:1" set, which is wrong here.
2009-06-25 13:41:35 +0200 msc  r273380 : #100000# the tabs changed die to new properties
2009-06-24 12:42:40 +0200 msc  r273330 : #102082# remove issue warning
2009-06-22 10:43:14 +0200 fs  r273201 : createPrimitive2DSequence: care for being disposed
2009-06-18 12:35:13 +0200 oj  r273109 : #i102305# make nooptfiles for gcc
2009-06-17 12:14:37 +0200 oj  r273056 : #i102305# fix for linux
2009-06-17 07:20:22 +0200 oj  r273046 : #i102305# move ValueTransfer into the for loop to avoid a crash under Linux
2009-06-17 07:17:28 +0200 oj  r273045 : #i102305# use varchar
2009-06-15 14:11:27 +0200 fs  r272983 : added since tag
2009-06-15 12:11:39 +0200 oj  r272973 : #i102305# SAL_DLLPUBLIC_EXPORT inserted
2009-06-15 11:08:53 +0200 fs  r272969 : #i10000#
2009-06-15 09:25:13 +0200 fs  r272963 : merging fix for P1 issue #i102701#
2009-06-11 11:31:24 +0200 fs  r272858 : #i10000# copied the fix which before the rebase was done in ../dialog/macropg.src
2009-06-11 09:38:14 +0200 fs  r272846 : CWS-TOOLING: rebase CWS dba32c to trunk@272827 (milestone: DEV300:m50)
2009-06-02 09:53:10 +0200 fs  r272483 : #i10000#
2009-05-29 15:55:03 +0200 fs  r272465 : #i100818#
2009-05-29 12:58:43 +0200 fs  r272452 : don't apply comphelper::getString on possibly VOID any
2009-05-29 10:38:35 +0200 oj  r272437 : #i101519# handle where condition
2009-05-29 09:53:39 +0200 fs  r272434 : #i100818# call into releaseStubs /without/ locked GlobalMutex
2009-05-28 07:53:44 +0200 oj  r272375 : #i101369# parse tree changed
2009-05-27 14:53:36 +0200 fs  r272347 : #i10000#
2009-05-27 09:29:15 +0200 oj  r272327 : #i101626# check for double before hard cast
2009-05-27 09:13:58 +0200 oj  r272326 : #i101626# handle void correctly
2009-05-27 08:04:39 +0200 oj  r272321 : #i102256# wrong method signature used
2009-05-27 07:55:52 +0200 oj  r272320 : #i101519# look up parameter typ if used in function
2009-05-27 06:49:07 +0200 oj  r272319 : #i101519# set parameter from rowset as well
2009-05-26 13:30:56 +0200 oj  r272297 : #i101987# impl XBatchExecution
2009-05-26 12:44:34 +0200 oj  r272293 : #i101700# check if group is not set
2009-05-26 12:16:53 +0200 oj  r272290 : #i101369# resolved some reduce7reduce problems with boolean_term and search_condition
2009-05-26 12:12:42 +0200 oj  r272289 : #i101369# fix for or on one line criteria
2009-05-25 16:02:25 +0200 fs  r272257 : #i999704# +PROPERTY_MOUSE_WHEEL_BEHAVIOR
2009-05-25 16:01:55 +0200 fs  r272256 : merging the changes from CWS dba32b herein
2009-05-25 15:49:57 +0200 fs  r272254 : #i999704#
2009-05-25 15:32:57 +0200 fs  r272252 : #i99704# grid columns also to respect the MouseWheelBehavior property
2009-05-25 15:23:43 +0200 fs  r272251 : don't pass empty Anys to ::comphelper::getString
2009-05-25 14:48:43 +0200 fs  r272248 : merged changes from CWS dba32b herein
2009-05-25 14:44:40 +0200 fs  r272247 : #i99704# support new MouseWheelBehavior property
2009-05-25 14:43:18 +0200 fs  r272246 : #i99704# WheelWithoutFocus (peer property) superseded by MouseWheelBehavior (model property)
2009-05-25 14:41:03 +0200 fs  r272245 : #i99704# no need to set the mouse wheel behavior at the peer, this is now a model property, having the right default
2009-05-25 14:39:31 +0200 fs  r272243 : removed dead import
2009-05-25 14:35:36 +0200 fs  r272242 : the new EnableVisible doesn't make sense for grid columns
2009-05-25 14:34:33 +0200 fs  r272241 : #i99704# +MouseWheelBehavior - allow to enable/disable the mouse wheel for the control, or make it focus-dependent
2009-05-25 14:26:11 +0200 fs  r272240 : #i99704# change MouseSettings wheel flag (NoWheelActionWithoutFocus) to a three-state option, allowing to completely ignore the mouse wheel
2009-05-23 21:35:59 +0200 fs  r272213 : localize 'sub component opened/closed' event
2009-05-22 21:42:47 +0200 fs  r272211 : #i102003#
2009-05-22 21:42:20 +0200 fs  r272210 : grammar
2009-05-22 21:36:10 +0200 fs  r272209 : #i102140# load only once, not twice, and show error messages during loading (and during any form action, that is) asynchronously
2009-05-22 21:35:11 +0200 fs  r272208 : #i102140# +clear
2009-05-22 14:50:30 +0200 fs  r272194 : #i102139# for newly created DB docs, set the MacroExecutionMode to USE_CONFIG
2009-05-22 12:03:42 +0200 fs  r272180 : #i88878#
provided by noel.power@novell.com
implement a visibility property (EnableVisible) for toolkit controls, and usage in forms and UNO dialogs
2009-05-15 15:37:31 +0200 fs  r271942 : #i100671# corrected some @since tags, so autodoc has better chances of correctly reading them
2009-05-15 15:33:11 +0200 fs  r271940 : don't call comphelper::getFOO for VOID values
2009-05-15 15:08:31 +0200 fs  r271937 : includes
2009-05-15 13:39:22 +0200 fs  r271934 : #i101398# createPrimitive2DSequence: when we already have a control, use the old code. In particular, call positionControlForPaint
2009-05-15 12:33:48 +0200 fs  r271933 : make the geometry a part of the ControlPrimitive2D's identity
2009-05-15 10:15:44 +0200 fs  r271928 : #i10000#
2009-05-14 20:55:38 +0200 fs  r271921 : #i101398# don't reuse the name PRIMITIVE_ID_CONTROLPRIMITIVE2D, make the name of our own ControlPrimitive2D unique
2009-05-14 20:55:31 +0200 fs  r271920 : #i101398# don't reuse the name PRIMITIVE_ID_CONTROLPRIMITIVE2D, make the name of our own ControlPrimitive2D unique
2009-05-14 20:23:23 +0200 fs  r271919 : #i101622#
2009-05-14 16:04:38 +0200 fs  r271898 : don't use comphelper::getInt32 on voids
2009-05-14 16:04:12 +0200 fs  r271897 : merge fix for issue whose number just slipped my memory ... (originally fixed in CWS dba32b)
2009-05-14 15:36:55 +0200 fs  r271895 : merging changes from DEV300:m48
2009-05-07 14:43:19 +0200 fs  r271670 : #i101477#
2009-05-07 14:37:30 +0200 fs  r271668 : #i101477#
2009-05-07 09:27:30 +0200 oj  r271628 : #i101343# remove pch
2009-05-06 09:36:02 +0200 fs  r271568 : getFoo: diagnostics
2009-05-04 09:23:06 +0200 oj  r271438 : CWS-TOOLING: rebase CWS dba32c to trunk@271427 (milestone: DEV300:m47)
2009-04-29 23:18:13 +0200 fs  r271394 : #i101398# use a dedicated 2DPrimitive for UNO Controls, which is able to provide the B2DRange *without* actually creating the control
2009-04-29 13:52:25 +0200 fs  r271366 : #i101308#

1 files changed, 283 insertions, 290 deletions

diff --git a/svx/source/sdr/contact/viewobjectcontactofunocontrol.cxx b/svx/source/sdr/contact/viewobjectcontactofunocontrol.cxx
index ea260f3285f7..bb7d772b3c0e 100644
--- a/svx/source/sdr/contact/viewobjectcontactofunocontrol.cxx
+++ b/svx/source/sdr/contact/viewobjectcontactofunocontrol.cxx
@@ -35,6 +35,7 @@
 #include <svx/sdr/contact/displayinfo.hxx>
 #include <svx/sdr/properties/properties.hxx>
 #include <svx/sdr/contact/objectcontactofpageview.hxx>
+#include <svx/sdr/primitive2d/svx_primitivetypes2d.hxx>
 
 /** === begin UNO includes === **/
 #include <com/sun/star/lang/XMultiServiceFactory.hpp>
@@ -80,6 +81,7 @@ namespace sdr { namespace contact {
     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::UNO_SET_THROW;
     using ::com::sun::star::uno::Exception;
     using ::com::sun::star::uno::RuntimeException;
     using ::com::sun::star::awt::XControl;
@@ -175,7 +177,11 @@ namespace sdr { namespace contact {
         inline void     addWindowListener( const Reference< XWindowListener >& _l ) const    { m_xControlWindow->addWindowListener( _l );    }
         inline void     removeWindowListener( const Reference< XWindowListener >& _l ) const { m_xControlWindow->removeWindowListener( _l ); }
                void     setPosSize( const Rectangle& _rPosSize ) const;
-               void     setZoom( const MapMode& _rMapMode ) const;
+               Rectangle
+                        getPosSize() const;
+               void     setZoom( const ::basegfx::B2DVector& _rScale ) const;
+               ::basegfx::B2DVector
+                        getZoom() const;
 
         inline void     setGraphics( const Reference< XGraphics >& _g ) const { m_xControlView->setGraphics( _g ); }
         inline Reference< XGraphics >
@@ -221,10 +227,36 @@ namespace sdr { namespace contact {
     }
 
     //--------------------------------------------------------------------
-    void ControlHolder::setZoom( const MapMode& _rMapMode ) const
+    ::Rectangle ControlHolder::getPosSize() const
     {
         // no check whether we're valid, this is the responsibility of the caller
-        m_xControlView->setZoom( (float)double( _rMapMode.GetScaleX() ), (float)double( _rMapMode.GetScaleY() ) );
+        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( (float)_rScale.getX(), (float)_rScale.getY() );
+    }
+
+    //--------------------------------------------------------------------
+    ::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?
+        Window* pWindow = VCLUnoHelper::GetWindow( m_xControlWindow );
+        OSL_ENSURE( pWindow, "ControlHolder::setZoom: no implementation access!" );
+
+        ::basegfx::B2DVector aZoom( 1, 1 );
+        if ( pWindow )
+        {
+            const Fraction& rZoom( pWindow->GetZoom() );
+            aZoom.setX( (double)rZoom );
+            aZoom.setY( (double)rZoom );
+        }
+        return aZoom;
     }
 
     //====================================================================
@@ -233,37 +265,13 @@ namespace sdr { namespace contact {
     class UnoControlContactHelper
     {
     public:
-        /** positions a control relative to a device
-
-            @precond <arg>_pDevice</arg> is not <NULL/>
+        /** positions a control, and sets its zoom mode, using a given transformation and output device
         */
-        static void positionControl_throw(
+        static void adjustControlGeometry_throw(
                 const ControlHolder& _rControl,
                 const Rectangle& _rLogicBoundingRect,
-                const OutputDevice* _pDevice
-            );
-
-        /** sets the zoom at a UNO control, according to a Device's MapMode
-
-            @precond <arg>_pDevice</arg> is not <NULL/>
-        */
-        static void setControlZoom(
-                const ControlHolder& _rControl,
-                const OutputDevice* _pDevice
-            );
-
-        /** draws a given control onto it's current XGraphics, at given coordinates
-
-            Note that the control is not drawn onto the given device, instead you must
-            use ->XView::setGraphics yourself, before calling this method. The given ->OutputDevice
-            is only used to calculate pixel coordinates from logic coordinates
-
-            @precond <arg>_pDevice</arg> is not <NULL/>
-        */
-        static void drawControl(
-                const ControlHolder& _rControl,
-                const Point& _rLogicTopLeft,
-                const OutputDevice* _pDevice
+                const ::basegfx::B2DHomMatrix& _rViewTransformation,
+                const ::basegfx::B2DHomMatrix& _rZoomLevelNormalization
             );
 
         /** disposes the given control
@@ -279,50 +287,28 @@ namespace sdr { namespace contact {
     };
 
     //--------------------------------------------------------------------
-    void UnoControlContactHelper::positionControl_throw( const ControlHolder& _rControl, const Rectangle& _rLogicBoundingRect,
-        const OutputDevice* _pDevice )
+    void UnoControlContactHelper::adjustControlGeometry_throw( const ControlHolder& _rControl, const Rectangle& _rLogicBoundingRect,
+        const basegfx::B2DHomMatrix& _rViewTransformation, const ::basegfx::B2DHomMatrix& _rZoomLevelNormalization )
     {
-        OSL_PRECOND( _pDevice, "UnoControlContactHelper::positionControl_throw: no device -> no survival!" );
-
-        if ( _rControl.is() )
-        {
-            const Rectangle aPaintRectPixel(
-                _pDevice->LogicToPixel( _rLogicBoundingRect.TopLeft() ),
-                _pDevice->LogicToPixel( _rLogicBoundingRect.GetSize() )
-            );
-
-            _rControl.setPosSize( aPaintRectPixel );
-        }
-    }
-
-    //--------------------------------------------------------------------
-    void UnoControlContactHelper::setControlZoom( const ControlHolder& _rControl, const OutputDevice* _pDevice )
-    {
-        OSL_PRECOND( _pDevice, "UnoControlContactHelper::setControlZoom: no device -> no survival!" );
-        OSL_PRECOND( _rControl.is(), "UnoControlContactHelper::setControlZoom: illegal control!" );
-
-        if ( _rControl.is() )
-            _rControl.setZoom( _pDevice->GetMapMode() );
-    }
-
-    //--------------------------------------------------------------------
-    void UnoControlContactHelper::drawControl( const ControlHolder& _rControl, const Point& _rLogicTopLeft,
-        const OutputDevice* _pDevice )
-    {
-        OSL_PRECOND( _rControl.is(), "UnoControlContactHelper::drawControl: invalid control!" );
+        OSL_PRECOND( _rControl.is(), "UnoControlContactHelper::adjustControlGeometry_throw: illegal control!" );
         if ( !_rControl.is() )
             return;
 
-        try
-        {
-            _rControl.draw(
-                _pDevice->LogicToPixel( _rLogicTopLeft )
-            );
-        }
-        catch( const Exception& )
-        {
-            DBG_UNHANDLED_EXCEPTION();
-        }
+        // 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 Rectangle aPaintRectPixel( (long)aTopLeft.getX(), (long)aTopLeft.getY(), (long)aBottomRight.getX(), (long)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 );
     }
 
     //--------------------------------------------------------------------
@@ -402,40 +388,7 @@ namespace sdr { namespace contact {
     }
 
     //====================================================================
-    //= DummyPageViewAccess
-    //====================================================================
-    /** is a ->IPageViewAccess implementation which defaults all attribute access, and thus can be
-        operated without an actual ->SdrPageView
-     */
-    class DummyPageViewAccess : public IPageViewAccess
-    {
-    public:
-        virtual bool    isDesignMode() const;
-        virtual Reference< XControlContainer >
-                        getControlContainer( const OutputDevice& _rDevice ) const;
-        virtual bool    isLayerVisible( SdrLayerID _nLayerID ) const;
-    };
-
-    //--------------------------------------------------------------------
-    bool DummyPageViewAccess::isDesignMode() const
-    {
-        return true;
-    }
-
-    //--------------------------------------------------------------------
-    Reference< XControlContainer > DummyPageViewAccess::getControlContainer( const OutputDevice& /*_rDevice*/ ) const
-    {
-        return Reference< XControlContainer >();
-    }
-
-    //--------------------------------------------------------------------
-    bool DummyPageViewAccess::isLayerVisible( SdrLayerID /*_nLayerID*/ ) const
-    {
-        return true;
-    }
-
-    //====================================================================
-    //= DummyPageViewAccess
+    //= InvisibleControlViewAccess
     //====================================================================
     /** is a ->IPageViewAccess implementation which can be used to create an invisble control for
         an arbitrary device
@@ -510,7 +463,7 @@ namespace sdr { namespace contact {
         Reference< XContainer >         m_xContainer;
 
         /// the output device for which the control was created
-        OutputDevice const*             m_pOutputDeviceForWindow;
+        const OutputDevice*             m_pOutputDeviceForWindow;
 
         /// flag indicating whether the control is currently visible
         bool                            m_bControlIsVisible;
@@ -527,6 +480,8 @@ namespace sdr { namespace contact {
         /// is the control currently in design mode?
         mutable ViewControlMode         m_eControlDesignMode;
 
+        ::basegfx::B2DHomMatrix         m_aZoomLevelNormalization;
+
     public:
         ViewObjectContactOfUnoControl_Impl( ViewObjectContactOfUnoControl* _pAntiImpl );
 
@@ -549,17 +504,13 @@ namespace sdr { namespace contact {
         */
         bool    getUnoObject( SdrUnoObj*& _out_rpObject ) const;
 
-        /** ensures that we have an XControl which can be painted onto the given display
-        */
-        bool    ensureControl( const DisplayInfo& _rDisplayInfo );
-
         /** 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 can only be
-            obtained from a ->DisplayInfo struct, or alternatively a ->ObjectContactOfPageView. So, if
-            our (anti-impl's) object contact is not a ->ObjectContactOfPageView, this method fill fail.
+            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.
         */
@@ -572,22 +523,16 @@ namespace sdr { namespace contact {
         inline const ControlHolder&
                 getExistentControl() const { return m_aControl; }
 
-        /** positions our XControl according to the geometry settings in the SdrUnoObj,
-            and sets proper zoom settings according to our device
+        inline 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/>
-            @tolerant
-                If the preconditions are not met, nothing is done at all
         */
-        void    positionAndZoomControl() const;
-
-        /** positions the control for a paint onto a given device
-
-            If we do not (yet) have a control, or the control does not belong to the
-            device for which a paint is requested, no positioning happens.
-        */
-        void    positionControlForPaint( const DisplayInfo& _rDisplayInfo ) const;
+        void    positionAndZoomControl( const basegfx::B2DHomMatrix& _rViewTransformation ) const;
 
         /** determines whether or not our control is printable
 
@@ -626,6 +571,13 @@ namespace sdr { namespace contact {
         struct GuardAccess { friend class VOCGuard; private: GuardAccess() { } };
         ::osl::Mutex&   getMutex( GuardAccess ) const { return m_aMutex; }
 
+        const ViewContactOfUnoControl&
+                getViewContact() const
+        {
+            ENSURE_OR_THROW( !impl_isDisposed_nofail(), "already disposed" );
+            return static_cast< const ViewContactOfUnoControl& >( m_pAntiImpl->GetViewContact() );
+        }
+
     protected:
         ~ViewObjectContactOfUnoControl_Impl();
 
@@ -797,10 +749,11 @@ namespace sdr { namespace contact {
 
             This method cares for this, by retrieving the very original OutputDevice.
         */
-        const OutputDevice& imp_getPageViewDevice_nothrow( const ObjectContactOfPageView& _rObjectContact ) const;
+        static const OutputDevice& imp_getPageViewDevice_nothrow( const ObjectContactOfPageView& _rObjectContact );
+        const OutputDevice& imp_getPageViewDevice_nothrow() const;
 
     private:
-        ViewObjectContactOfUnoControl_Impl();                                                     // never implemented
+        ViewObjectContactOfUnoControl_Impl();                                                       // never implemented
         ViewObjectContactOfUnoControl_Impl( const ViewObjectContactOfUnoControl_Impl& );            // never implemented
         ViewObjectContactOfUnoControl_Impl& operator=( const ViewObjectContactOfUnoControl_Impl& ); // never implemented
     };
@@ -812,18 +765,65 @@ namespace sdr { namespace contact {
      */
     class VOCGuard
     {
-        const ViewObjectContactOfUnoControl_Impl& m_rImpl;
-        ::osl::MutexGuard                       m_aMutexGuard;
+    private:
+        ::osl::MutexGuard   m_aMutexGuard;
 
     public:
         VOCGuard( const ViewObjectContactOfUnoControl_Impl& _rImpl )
-            :m_rImpl( _rImpl )
-            ,m_aMutexGuard( _rImpl.getMutex( ViewObjectContactOfUnoControl_Impl::GuardAccess() ) )
+            :m_aMutexGuard( _rImpl.getMutex( ViewObjectContactOfUnoControl_Impl::GuardAccess() ) )
         {
         }
     };
 
     //====================================================================
+    //= LazyControlCreationPrimitive2D
+    //====================================================================
+    class LazyControlCreationPrimitive2D : public ::drawinglayer::primitive2d::BasePrimitive2D
+    {
+    private:
+        typedef ::drawinglayer::primitive2d::BasePrimitive2D  BasePrimitive2D;
+
+    protected:
+        virtual ::drawinglayer::primitive2d::Primitive2DSequence
+            get2DDecomposition(
+                const ::drawinglayer::geometry::ViewInformation2D& rViewInformation
+            ) const;
+
+        virtual ::drawinglayer::primitive2d::Primitive2DSequence
+            createLocalDecomposition(
+                const ::drawinglayer::geometry::ViewInformation2D& rViewInformation
+            ) const;
+
+        virtual ::basegfx::B2DRange
+            getB2DRange(
+                const ::drawinglayer::geometry::ViewInformation2D& rViewInformation
+            ) const;
+
+    public:
+        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;
+
+        // declare unique ID for this primitive class
+        DeclPrimitrive2DIDBlock()
+
+        static void getTransformation( const ViewContactOfUnoControl& _rVOC, ::basegfx::B2DHomMatrix& _out_Transformation );
+
+    private:
+        ::rtl::Reference< ViewObjectContactOfUnoControl_Impl >  m_pVOCImpl;
+        /** The geometry is part of the identity of an 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
     //====================================================================
     DBG_NAME( ViewObjectContactOfUnoControl_Impl )
@@ -834,10 +834,20 @@ namespace sdr { namespace contact {
         ,m_bControlIsVisible( false )
         ,m_bIsDesignModeListening( false )
         ,m_eControlDesignMode( eUnknown )
+        ,m_aZoomLevelNormalization()
     {
         DBG_CTOR( ViewObjectContactOfUnoControl_Impl, NULL );
         DBG_ASSERT( m_pAntiImpl, "ViewObjectContactOfUnoControl_Impl::ViewObjectContactOfUnoControl_Impl: invalid AntiImpl!" );
-    }
+
+        const OutputDevice& rPageViewDevice( imp_getPageViewDevice_nothrow() );
+        m_aZoomLevelNormalization = rPageViewDevice.GetInverseViewTransformation();
+
+        ::basegfx::B2DHomMatrix aScaleNormalization;
+        MapMode aCurrentDeviceMapMode( rPageViewDevice.GetMapMode() );
+        aScaleNormalization.set( 0, 0, (double)aCurrentDeviceMapMode.GetScaleX() );
+        aScaleNormalization.set( 1, 1, (double)aCurrentDeviceMapMode.GetScaleY() );
+        m_aZoomLevelNormalization *= aScaleNormalization;
+   }
 
     //--------------------------------------------------------------------
     ViewObjectContactOfUnoControl_Impl::~ViewObjectContactOfUnoControl_Impl()
@@ -898,27 +908,21 @@ namespace sdr { namespace contact {
     }
 
     //--------------------------------------------------------------------
-    void ViewObjectContactOfUnoControl_Impl::positionControlForPaint( const DisplayInfo& /* #i74769# _rDisplayInfo*/ ) const
-    {
-        if ( !m_aControl.is() )
-            return;
-
-        positionAndZoomControl();
-    }
-
-    //--------------------------------------------------------------------
-    void ViewObjectContactOfUnoControl_Impl::positionAndZoomControl() const
+    void ViewObjectContactOfUnoControl_Impl::positionAndZoomControl( const basegfx::B2DHomMatrix& _rViewTransformation ) const
     {
-        OSL_PRECOND( m_pOutputDeviceForWindow && m_aControl.is(), "ViewObjectContactOfUnoControl_Impl::positionAndZoomControl: no output device or no control!" );
-        if ( !m_pOutputDeviceForWindow || !m_aControl.is() )
+        OSL_PRECOND( ( m_pOutputDeviceForWindow != NULL ) && m_aControl.is(), "ViewObjectContactOfUnoControl_Impl::positionAndZoomControl: no output device or no control!" );
+        if ( ( m_pOutputDeviceForWindow == NULL ) || !m_aControl.is() )
             return;
 
         try
         {
             SdrUnoObj* pUnoObject( NULL );
             if ( getUnoObject( pUnoObject ) )
-                UnoControlContactHelper::positionControl_throw( m_aControl, pUnoObject->GetLogicRect(), m_pOutputDeviceForWindow );
-            UnoControlContactHelper::setControlZoom( m_aControl, m_pOutputDeviceForWindow );
+            {
+                UnoControlContactHelper::adjustControlGeometry_throw( m_aControl, pUnoObject->GetLogicRect(), _rViewTransformation, m_aZoomLevelNormalization );
+            }
+            else
+                OSL_ENSURE( false, "ViewObjectContactOfUnoControl_Impl::positionAndZoomControl: no SdrUnoObj!" );
         }
         catch( const Exception& )
         {
@@ -927,37 +931,6 @@ namespace sdr { namespace contact {
     }
 
     //--------------------------------------------------------------------
-    bool ViewObjectContactOfUnoControl_Impl::ensureControl( const DisplayInfo& /*_rDisplayInfo*/ )
-    {
-        OSL_PRECOND( !impl_isDisposed_nofail(), "ViewObjectContactOfUnoControl_Impl::ensureControl: already disposed()" );
-        if ( impl_isDisposed_nofail() )
-            return false;
-
-        const OutputDevice* pDeviceForControl( NULL );
-
-        // if we're working for a page view, use the respective OutputDevice at the proper
-        // PaintWindow. The DisplayInfo might only contain a temporary (virtual) device, which
-        // is dangerous to remember
-        // 2006-10-24 / #i70604# / frank.schoenheit@sun.com
-        ObjectContactOfPageView* pPageViewContact = dynamic_cast< ObjectContactOfPageView* >( &m_pAntiImpl->GetObjectContact() );
-        if ( pPageViewContact )
-            pDeviceForControl = &imp_getPageViewDevice_nothrow( *pPageViewContact );
-
-        if ( !pDeviceForControl && pPageViewContact)
-            pDeviceForControl = pPageViewContact->TryToGetOutputDevice();
-
-        DBG_ASSERT( pDeviceForControl, "ViewObjectContactOfUnoControl_Impl::ensureControl: no output device!" );
-        if ( !pDeviceForControl )
-            return false;
-
-        SdrPageView* pPageView = m_pAntiImpl->GetObjectContact().TryToGetSdrPageView();
-
-        ::std::auto_ptr< IPageViewAccess > pPVAccess;
-        pPVAccess.reset( pPageView ? (IPageViewAccess*)new SdrPageViewAccess( *pPageView ) : (IPageViewAccess*)new DummyPageViewAccess() );
-        return impl_ensureControl_nothrow( *pPVAccess, *pDeviceForControl );
-    }
-
-    //--------------------------------------------------------------------
     bool ViewObjectContactOfUnoControl_Impl::ensureControl()
     {
         OSL_PRECOND( !impl_isDisposed_nofail(), "ViewObjectContactOfUnoControl_Impl::ensureControl: already disposed()" );
@@ -977,13 +950,21 @@ namespace sdr { namespace contact {
     }
 
     //--------------------------------------------------------------------
-    const OutputDevice& ViewObjectContactOfUnoControl_Impl::imp_getPageViewDevice_nothrow( const ObjectContactOfPageView& _rObjectContact ) const
+    const OutputDevice& ViewObjectContactOfUnoControl_Impl::imp_getPageViewDevice_nothrow() const
+    {
+        ObjectContactOfPageView* pPageViewContact = dynamic_cast< ObjectContactOfPageView* >( &m_pAntiImpl->GetObjectContact() );
+        ENSURE_OR_THROW( pPageViewContact, "need a ObjectContactOfPageView." );
+        return imp_getPageViewDevice_nothrow( *pPageViewContact );
+    }
+
+    //--------------------------------------------------------------------
+    const OutputDevice& ViewObjectContactOfUnoControl_Impl::imp_getPageViewDevice_nothrow( const ObjectContactOfPageView& _rObjectContact )
     {
         // if the PageWindow has a patched PaintWindow, use the original PaintWindow
         // this ensures that our control is _not_ re-created just because somebody
         // (temporarily) changed the window to paint onto.
         // #i72429# / 2007-02-20 / frank.schoenheit@sun.com
-        const SdrPageWindow& rPageWindow( _rObjectContact.GetPageWindow() );
+        SdrPageWindow& rPageWindow( _rObjectContact.GetPageWindow() );
         if ( rPageWindow.GetOriginalPaintWindow() )
             return rPageWindow.GetOriginalPaintWindow()->GetOutputDevice();
 
@@ -1001,7 +982,7 @@ namespace sdr { namespace contact {
             // 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 (doens't  it?), the second means we could perhaps
+            // The first sounds strange (doens'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# / 2007-02-15 / frank.schoenheit@sun.com
@@ -1063,44 +1044,37 @@ namespace sdr { namespace contact {
         bool bSuccess = false;
         try
         {
-            do
-            {
-                const ::rtl::OUString sControlServiceName( _rUnoObject.GetUnoControlTypeName() );
+            const ::rtl::OUString sControlServiceName( _rUnoObject.GetUnoControlTypeName() );
 
-                Reference< XMultiServiceFactory > xFactory( ::comphelper::getProcessServiceFactory() );
-                if ( xFactory.is() )
-                {
-                    _out_rControl = Reference< XControl >( xFactory->createInstance( sControlServiceName ), UNO_QUERY );
-                }
-                DBG_ASSERT( _out_rControl.is(), "ViewObjectContactOfUnoControl_Impl::createControlForDevice: no control could be created!" );
-                if ( !_out_rControl.is() )
-                    break;
-
-                // knit the model and the control
-                _out_rControl.setModel( xControlModel );
+            Reference< XMultiServiceFactory > xFactory( ::comphelper::getProcessServiceFactory(), UNO_SET_THROW );
+            _out_rControl = Reference< XControl >( xFactory->createInstance( sControlServiceName ), UNO_QUERY_THROW );
 
-                UnoControlContactHelper::positionControl_throw( _out_rControl, _rUnoObject.GetLogicRect(), &_rDevice );
+            // knit the model and the control
+            _out_rControl.setModel( xControlModel );
 
-                // proper zoom
-                UnoControlContactHelper::setControlZoom( _out_rControl, &_rDevice );
+            // proper geometry
+            UnoControlContactHelper::adjustControlGeometry_throw(
+                _out_rControl,
+                _rUnoObject.GetLogicRect(),
+                _rDevice.GetViewTransformation(),
+                _rDevice.GetInverseViewTransformation()
+            );
 
-                // #107049# set design mode before peer is created,
-                // this is also needed for accessibility
-                _out_rControl.setDesignMode( _rPageView.isDesignMode() );
+            // #107049# 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
-                // 2003-06-03 - #110592# - fs@openoffice.org
-                impl_adjustControlVisibilityToLayerVisibility_throw( _out_rControl, _rUnoObject, _rPageView, false, true );
+            // adjust the initial visibility according to the visibility of the layer
+            // 2003-06-03 - #110592# - fs@openoffice.org
+            impl_adjustControlVisibilityToLayerVisibility_throw( _out_rControl, _rUnoObject, _rPageView, false, true );
 
-                // add the control to the respective control container
-                // #108327# do this last
-                Reference< XControlContainer > xControlContainer( _rPageView.getControlContainer( _rDevice ) );
-                if ( xControlContainer.is() )
-                    xControlContainer->addControl( sControlServiceName, _out_rControl.getControl() );
+            // add the control to the respective control container
+            // #108327# do this last
+            Reference< XControlContainer > xControlContainer( _rPageView.getControlContainer( _rDevice ) );
+            if ( xControlContainer.is() )
+                xControlContainer->addControl( sControlServiceName, _out_rControl.getControl() );
 
-                bSuccess = true;
-            }
-            while ( false );
+            bSuccess = true;
         }
         catch( const Exception& )
         {
@@ -1411,15 +1385,20 @@ namespace sdr { namespace contact {
             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;
-            positionAndZoomControl();
-            m_aControl.setDesignMode( impl_isControlDesignMode_nothrow() );
             m_bControlIsVisible = m_aControl.isVisible();
 
             impl_switchControlListening_nothrow( true );
@@ -1449,30 +1428,96 @@ namespace sdr { namespace contact {
         }
     }
 
+    //====================================================================
+    //= LazyControlCreationPrimitive2D
+    //====================================================================
     //--------------------------------------------------------------------
-    bool ViewObjectContactOfUnoControl_Impl::belongsToDevice( const OutputDevice* _pDevice ) const
+    bool LazyControlCreationPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
     {
-        DBG_ASSERT( _pDevice, "ViewObjectContactOfUnoControl_Impl::belongsToDevice: invalid device!" );
+        if ( !BasePrimitive2D::operator==( rPrimitive ) )
+            return false;
 
-        OSL_PRECOND( !impl_isDisposed_nofail(), "ViewObjectContactOfUnoControl_Impl::belongsToDevice: already disposed!" );
-        if ( impl_isDisposed_nofail() )
+        const LazyControlCreationPrimitive2D* pRHS = dynamic_cast< const LazyControlCreationPrimitive2D* >( &rPrimitive );
+        if ( !pRHS )
             return false;
 
-        if ( m_pOutputDeviceForWindow )
-        {
-            if ( _pDevice == m_pOutputDeviceForWindow )
-                return true;
+        if ( m_pVOCImpl != pRHS->m_pVOCImpl )
             return false;
-        }
 
-        ObjectContactOfPageView* pPageViewContact = dynamic_cast< ObjectContactOfPageView* >( &m_pAntiImpl->GetObjectContact() );
-        if ( pPageViewContact )
-            return ( _pDevice == &imp_getPageViewDevice_nothrow( *pPageViewContact ) );
+        if ( m_aTransformation != pRHS->m_aTransformation )
+            return false;
 
-        DBG_ERROR( "ViewObjectContactOfUnoControl_Impl::belongsToDevice: could not determine the device I belong to!" );
-        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; tese will use the sequence of
+        // primitives themselves in the long run.
+        const Rectangle aSdrGeoData( _rVOC.GetSdrUnoObj().GetGeoRect() );
+        const basegfx::B2DRange aRange(
+            aSdrGeoData.Left(),
+            aSdrGeoData.Top(),
+            aSdrGeoData.Right(),
+            aSdrGeoData.Bottom()
+        );
+
+        _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;
+    }
+
+    //--------------------------------------------------------------------
+    ::drawinglayer::primitive2d::Primitive2DSequence LazyControlCreationPrimitive2D::get2DDecomposition( const ::drawinglayer::geometry::ViewInformation2D& _rViewInformation ) const
+    {
+        if ( m_pVOCImpl->hasControl() )
+            m_pVOCImpl->positionAndZoomControl( _rViewInformation.getObjectToViewTransformation() );
+        return BasePrimitive2D::get2DDecomposition( _rViewInformation );
+    }
+
+    //--------------------------------------------------------------------
+    ::drawinglayer::primitive2d::Primitive2DSequence LazyControlCreationPrimitive2D::createLocalDecomposition( const ::drawinglayer::geometry::ViewInformation2D& _rViewInformation ) const
+    {
+        // force control here to make it a VCL ChildWindow. Will be fetched
+        // and used below by getExistentControl()
+        m_pVOCImpl->ensureControl();
+        m_pVOCImpl->positionAndZoomControl( _rViewInformation.getObjectToViewTransformation() );
+
+        // get needed data
+        const ViewContactOfUnoControl& rViewContactOfUnoControl( m_pVOCImpl->getViewContact() );
+        Reference< XControlModel > xControlModel( rViewContactOfUnoControl.GetSdrUnoObj().GetUnoControlModel() );
+        const ControlHolder& rControl( m_pVOCImpl->getExistentControl() );
+
+        // 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
+            return rViewContactOfUnoControl.getViewIndependentPrimitive2DSequence();
+
+        // create a primitive and hand over the existing xControl. This will
+        // allow the primitive to not need to create another one on demand.
+        const drawinglayer::primitive2d::Primitive2DReference xRetval( new ::drawinglayer::primitive2d::ControlPrimitive2D(
+            m_aTransformation, xControlModel, rControl.getControl() ) );
+
+        return drawinglayer::primitive2d::Primitive2DSequence(&xRetval, 1);
     }
 
+    //--------------------------------------------------------------------
+    ImplPrimitrive2DIDBlock( LazyControlCreationPrimitive2D, PRIMITIVE2D_ID_SDRCONTROLPRIMITIVE2D )
+
     //====================================================================
     //= ViewObjectContactOfUnoControl
     //====================================================================
@@ -1522,20 +1567,6 @@ namespace sdr { namespace contact {
     }
 
     //--------------------------------------------------------------------
-    void ViewObjectContactOfUnoControl::positionControlForPaint( const DisplayInfo& _rDisplayInfo ) const
-    {
-        VOCGuard aGuard( *m_pImpl );
-
-        // ensure we have a control. If we don't, then the Drawing Layer might be tempted to
-        // never draw the complete form layer.
-        // #i75095# / 2007-03-05 / frank.schoenheit@sun.com
-        m_pImpl->ensureControl( _rDisplayInfo );
-
-        // position the control
-        m_pImpl->positionControlForPaint( _rDisplayInfo );
-    }
-
-    //--------------------------------------------------------------------
     void ViewObjectContactOfUnoControl::ensureControlVisibility( bool _bVisible ) const
     {
         VOCGuard aGuard( *m_pImpl );
@@ -1582,70 +1613,32 @@ namespace sdr { namespace contact {
     }
 
     //--------------------------------------------------------------------
-    bool ViewObjectContactOfUnoControl::belongsToDevice( const OutputDevice* _pDevice ) const
+    drawinglayer::primitive2d::Primitive2DSequence ViewObjectContactOfUnoControl::createPrimitive2DSequence(const DisplayInfo& /*rDisplayInfo*/) const
     {
-        VOCGuard aGuard( *m_pImpl );
-        return m_pImpl->belongsToDevice( _pDevice );
+        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 drawinglayer::primitive2d::Primitive2DSequence();

+

+        ::drawinglayer::primitive2d::Primitive2DReference xPrimitive( new LazyControlCreationPrimitive2D( m_pImpl ) );
+        return ::drawinglayer::primitive2d::Primitive2DSequence( &xPrimitive, 1 );
     }
 
     //--------------------------------------------------------------------
-    drawinglayer::primitive2d::Primitive2DSequence ViewObjectContactOfUnoControl::createPrimitive2DSequence(const DisplayInfo& rDisplayInfo) const
-    {
-        // force control here to make it a VCL ChildWindow. Will be fetched
-        // and used below by getExistentControl()
-        m_pImpl->ensureControl();
-        m_pImpl->positionControlForPaint(rDisplayInfo);
-
-        // get needed data
-        const ViewContactOfUnoControl& rViewContactOfUnoControl(static_cast< const ViewContactOfUnoControl& >(GetViewContact()));
-        Reference< XControlModel > xControlModel(rViewContactOfUnoControl.GetSdrUnoObj().GetUnoControlModel());
-        const ControlHolder& rControl(m_pImpl->getExistentControl());
-
-        // check if we already have a XControl.
-        if(xControlModel.is() && rControl.is())
-        {
-            // create a primitive and hand over the existing xControl. This will
-            // allow the primitive to not need to create another one on demand.
-            // Do use model data directly to create the correct geometry. Do NOT
-            // use getBoundRect()/getSnapRect() here; tese will use the sequence of
-            // primitives themselves in the long run.
-            const Rectangle aUnoControlModelData(rViewContactOfUnoControl.GetSdrUnoObj().GetGeoRect());
-            const basegfx::B2DRange aRange(aUnoControlModelData.Left(), aUnoControlModelData.Top(), aUnoControlModelData.Right(), aUnoControlModelData.Bottom());
-
-            // create object transform
-            basegfx::B2DHomMatrix aTransform;
-            aTransform.set(0, 0, aRange.getWidth());
-            aTransform.set(1, 1, aRange.getHeight());
-            aTransform.set(0, 2, aRange.getMinX());
-            aTransform.set(1, 2, aRange.getMinY());
-
-            // create control primitive with existing XControl
-            const drawinglayer::primitive2d::Primitive2DReference xRetval(new drawinglayer::primitive2d::ControlPrimitive2D(
-                aTransform, xControlModel, rControl.getControl()));
-
-            return drawinglayer::primitive2d::Primitive2DSequence(&xRetval, 1);
-        }
-        else
-        {
-            // 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
-            return rViewContactOfUnoControl.getViewIndependentPrimitive2DSequence();
-        }
-    }
-
     void ViewObjectContactOfUnoControl::propertyChange()
     {
         // graphical invalidate at all views
         ActionChanged();
 
         // #i93318# flush Primitive2DSequence to force recreation with updated XControlModel
-        // since e.g. background color has changed and existing decompositions are evtl. no
+        // 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();
     }
 
+    //--------------------------------------------------------------------
     void ViewObjectContactOfUnoControl::ActionChanged()
     {
         // call parent