/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/

// 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>
#include <drawinglayer/primitive2d/sdrdecompositiontools2d.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
		{
			// 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());
			}

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

			if(xSequenceVirtual.hasElements())
			{
				// create transform primitive
				const drawinglayer::primitive2d::Primitive2DReference xReference(
					new drawinglayer::primitive2d::TransformPrimitive2D(
						aObjectMatrix, 
						xSequenceVirtual));

				return drawinglayer::primitive2d::Primitive2DSequence(&xReference, 1);
			}
			else
			{
				// always append an invisible outline for the cases where no visible content exists
				const drawinglayer::primitive2d::Primitive2DReference xReference(
					drawinglayer::primitive2d::createHiddenGeometryPrimitives2D(
						false, aObjectMatrix));

				return drawinglayer::primitive2d::Primitive2DSequence(&xReference, 1);
			}
		}
	} // end of namespace contact
} // end of namespace sdr

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