/*************************************************************************
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * $RCSfile: viewcontactofvirtobj.cxx,v $
 * $Revision: 1.7 $
 *
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * version 3 along with OpenOffice.org.  If not, see
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svx.hxx"
#include <svx/sdr/contact/viewcontactofvirtobj.hxx>
#include <svx/svdovirt.hxx>
#include <svx/sdr/contact/displayinfo.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
#include <vcl/outdev.hxx>

//////////////////////////////////////////////////////////////////////////////

namespace sdr
{
    namespace contact
    {
        SdrVirtObj& ViewContactOfVirtObj::GetVirtObj() const
        {
            return (SdrVirtObj&)mrObject;
        }

        ViewContactOfVirtObj::ViewContactOfVirtObj(SdrVirtObj& rObj)
        :   ViewContactOfSdrObj(rObj)
        {
        }

        ViewContactOfVirtObj::~ViewContactOfVirtObj()
        {
        }

        // Access to possible sub-hierarchy
        sal_uInt32 ViewContactOfVirtObj::GetObjectCount() const
        {
            // Here, SdrVirtObj's need to return 0L to show that they have no
            // sub-hierarchy, even when they are group objects. This is necessary
            // to avoid that the same VOCs will be added to the draw hierarchy
            // twice which leads to problems.
            //
            // This solution is only a first solution to get things running. Later
            // this needs to be replaced with creating real VOCs for the objects
            // referenced by virtual objects to avoid the 'trick' of setting the
            // offset for painting at the destination OutputDevive.
            //
            // As can be seen, with primitives, the problem will be solved using
            // a transformPrimitive, so this solution can stay with primitives.
            return 0L;
        }

        drawinglayer::primitive2d::Primitive2DSequence ViewContactOfVirtObj::createViewIndependentPrimitive2DSequence() const
        {
            drawinglayer::primitive2d::Primitive2DSequence xRetval;

            // use method from referenced object to get the Primitive2DSequence
            const drawinglayer::primitive2d::Primitive2DSequence xSequenceVirtual(GetVirtObj().GetReferencedObj().GetViewContact().getViewIndependentPrimitive2DSequence());

            if(xSequenceVirtual.hasElements())
            {
                // create displacement transformation if we have content
                ::basegfx::B2DHomMatrix aObjectMatrix;
                Point aAnchor(GetVirtObj().GetAnchorPos());

                if(aAnchor.X() || aAnchor.Y())
                {
                    aObjectMatrix.set(0, 2, aAnchor.X());
                    aObjectMatrix.set(1, 2, aAnchor.Y());
                }

                // create transform primitive
                const drawinglayer::primitive2d::Primitive2DReference xReference(new drawinglayer::primitive2d::TransformPrimitive2D(aObjectMatrix, xSequenceVirtual));
                xRetval = drawinglayer::primitive2d::Primitive2DSequence(&xReference, 1);
            }

            return xRetval;
        }
    } // end of namespace contact
} // end of namespace sdr

//////////////////////////////////////////////////////////////////////////////
// eof