/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */


#include <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/utils/canvastools.hxx>
#include <svx/sdr/contact/viewcontact.hxx>
#include <svx/svdobj.hxx>
#include <vcl/outdev.hxx>


using namespace com::sun::star;


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

        ViewObjectContactOfGroup::~ViewObjectContactOfGroup()
        {
        }

        drawinglayer::primitive2d::Primitive2DContainer ViewObjectContactOfGroup::getPrimitive2DSequenceHierarchy(DisplayInfo& rDisplayInfo) const
        {
            drawinglayer::primitive2d::Primitive2DContainer xRetval;

            // check model-view visibility
            if(isPrimitiveVisible(rDisplayInfo))
            {
                const sal_uInt32 nSubHierarchyCount(GetViewContact().GetObjectCount());

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

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

                    // create object hierarchy
                    xRetval = getPrimitive2DSequenceSubHierarchy(rDisplayInfo);

                    if(!xRetval.empty())
                    {
                        // get ranges
                        const drawinglayer::geometry::ViewInformation2D& rViewInformation2D(GetObjectContact().getViewInformation2D());
                        const ::basegfx::B2DRange aObjectRange(xRetval.getB2DRange(rViewInformation2D));
                        const basegfx::B2DRange aViewRange(rViewInformation2D.getViewport());

                        // check geometrical visibility
                        if(!aViewRange.isEmpty() && !aViewRange.overlaps(aObjectRange))
                        {
                            // not visible, release
                            xRetval.clear();
                        }
                    }

                    if(bDoGhostedDisplaying)
                    {
                        rDisplayInfo.SetGhostedDrawMode();
                    }
                }
                else
                {
                    // draw replacement object for group. This will use ViewContactOfGroup::createViewIndependentPrimitive2DSequence
                    // which creates the replacement primitives for an empty group
                    xRetval = ViewObjectContactOfSdrObj::getPrimitive2DSequenceHierarchy(rDisplayInfo);
                }
            }
            return xRetval;
        }

        bool ViewObjectContactOfGroup::isPrimitiveVisibleOnAnyLayer(const SdrLayerIDSet& aLayers) const
        {
            SdrLayerIDSet aObjectLayers;
            getSdrObject().getMergedHierarchySdrLayerIDSet(aObjectLayers);
            aObjectLayers &= aLayers;
            return !aObjectLayers.IsEmpty();
        }
    } // end of namespace contact
} // end of namespace sdr

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