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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: viewcontactofgroup.cxx,v $
 * $Revision: 1.8 $
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svx.hxx"
#include <svx/sdr/contact/viewcontactofgroup.hxx>
#include <svx/svdogrp.hxx>
#include <svx/svdpage.hxx>
#include <svx/sdr/contact/viewobjectcontact.hxx>
#include <svx/sdr/contact/viewobjectcontactofgroup.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <basegfx/color/bcolor.hxx>
#include <drawinglayer/primitive2d/polygonprimitive2d.hxx>

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

namespace sdr
{
	namespace contact
	{
		// Create a Object-Specific ViewObjectContact, set ViewContact and
		// ObjectContact. Always needs to return something.
		ViewObjectContact& ViewContactOfGroup::CreateObjectSpecificViewObjectContact(ObjectContact& rObjectContact)
		{
			ViewObjectContact* pRetval = new ViewObjectContactOfGroup(rObjectContact, *this);
			DBG_ASSERT(pRetval, "ViewContactOfGroup::CreateObjectSpecificViewObjectContact() failed (!)");

			return *pRetval;
		}

		ViewContactOfGroup::ViewContactOfGroup(SdrObjGroup& rGroup)
		:	ViewContactOfSdrObj(rGroup)
		{
		}

		ViewContactOfGroup::~ViewContactOfGroup()
		{
		}

		drawinglayer::primitive2d::Primitive2DSequence ViewContactOfGroup::createViewIndependentPrimitive2DSequence() const
		{
			drawinglayer::primitive2d::Primitive2DSequence xRetval;
			const sal_uInt32 nObjectCount(GetObjectCount());

			if(nObjectCount)
			{
				// collect all sub-primitives
				for(sal_uInt32 a(0); a < nObjectCount; a++)
				{
					const ViewContact& rCandidate(GetViewContact(a));
					const drawinglayer::primitive2d::Primitive2DSequence aCandSeq(rCandidate.getViewIndependentPrimitive2DSequence());
                    
					drawinglayer::primitive2d::appendPrimitive2DSequenceToPrimitive2DSequence(xRetval, aCandSeq);
				}
			}

			if(xRetval.hasElements())
			{
				return xRetval;
			}
			else
			{
				// create a gray placeholder hairline polygon in object size. Use the model data directly. For empty groups,
				// this is SdrObject::aOutRect, as can be seen in SdrObjGroup::GetSnapRect(). Access that using GetLastBoundRect()
				// to not execute anything.
				const Rectangle aCurrentBoundRect(GetSdrObjGroup().GetLastBoundRect());
				const basegfx::B2DPolygon aOutline(basegfx::tools::createPolygonFromRect(basegfx::B2DRange(
					aCurrentBoundRect.Left(), aCurrentBoundRect.Top(), aCurrentBoundRect.Right(), aCurrentBoundRect.Bottom())));
				const basegfx::BColor aGrayTone(0xc0 / 255.0, 0xc0 / 255.0, 0xc0 / 255.0);
				const drawinglayer::primitive2d::Primitive2DReference xReference(new drawinglayer::primitive2d::PolygonHairlinePrimitive2D(aOutline, aGrayTone));

				// The replacement object may also get a text like 'empty group' here later
				return drawinglayer::primitive2d::Primitive2DSequence(&xReference, 1);
			}
		}
	} // end of namespace contact
} // end of namespace sdr

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