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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