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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: viewobjectcontactofgroup.cxx,v $
 *
 * $Revision: 1.2 $
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 * GNU Lesser General Public License version 3 for more details
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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/viewobjectcontactofgroup.hxx>
#include <svx/sdr/contact/displayinfo.hxx>
#include <svx/sdr/contact/objectcontact.hxx>
#include <basegfx/numeric/ftools.hxx>
#include <drawinglayer/primitive2d/groupprimitive2d.hxx>
#include <basegfx/tools/canvastools.hxx>
#include <svx/sdr/contact/viewcontact.hxx>

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

using namespace com::sun::star;

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

namespace sdr
{
	namespace contact
	{
		ViewObjectContactOfGroup::ViewObjectContactOfGroup(ObjectContact& rObjectContact, ViewContact& rViewContact)
		:	ViewObjectContactOfSdrObj(rObjectContact, rViewContact)
		{
		}

		ViewObjectContactOfGroup::~ViewObjectContactOfGroup()
		{
		}

		bool ViewObjectContactOfGroup::isPrimitiveVisible(const DisplayInfo& rDisplayInfo) const
		{
            const bool bHasChildren(0 != GetViewContact().GetObjectCount());

            if(!bHasChildren && (GetObjectContact().isOutputToPrinter() || GetObjectContact().isOutputToRecordingMetaFile()))
            {
                // empty group uses fallback gray empty frame display. Do neither print nor PDF export it
                return false;
            }

            // call parent
    		return ViewObjectContactOfSdrObj::isPrimitiveVisible(rDisplayInfo);
		}

        drawinglayer::primitive2d::Primitive2DSequence ViewObjectContactOfGroup::getPrimitive2DSequenceHierarchy(DisplayInfo& rDisplayInfo) const
		{
			const sal_uInt32 nSubHierarchyCount(GetViewContact().GetObjectCount());

			if(nSubHierarchyCount)
			{
				const sal_Bool bDoGhostedDisplaying(
					GetObjectContact().DoVisualizeEnteredGroup() 
					&& !GetObjectContact().isOutputToPrinter()
					&& GetObjectContact().getActiveViewContact() == &GetViewContact());

				if(bDoGhostedDisplaying)
				{
					rDisplayInfo.ClearGhostedDrawMode();
				}

				// create object hierarchy
				drawinglayer::primitive2d::Primitive2DSequence xRetval(getPrimitive2DSequenceSubHierarchy(rDisplayInfo));

				if(xRetval.hasElements())
				{
					// get ranges
					const drawinglayer::geometry::ViewInformation2D& rViewInformation2D(GetObjectContact().getViewInformation2D());
					const ::basegfx::B2DRange aObjectRange(drawinglayer::primitive2d::getB2DRangeFromPrimitive2DSequence(xRetval, rViewInformation2D));
					const basegfx::B2DRange aViewRange(rViewInformation2D.getViewport());
					
					// check geometrical visibility
					if(!aViewRange.isEmpty() && !aViewRange.overlaps(aObjectRange))
					{
						// not visible, release
						xRetval.realloc(0);
					}
				}

				if(bDoGhostedDisplaying)
				{
					rDisplayInfo.SetGhostedDrawMode();
				}

				return xRetval;
			}
			else
			{
				// draw replacement object for group. This will use ViewContactOfGroup::createViewIndependentPrimitive2DSequence
				// which creates the replacement primitives for an empty group
				return ViewObjectContactOfSdrObj::getPrimitive2DSequenceHierarchy(rDisplayInfo);
			}
		}
	} // end of namespace contact
} // end of namespace sdr

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