/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

 * This file is part of the LibreOffice project.

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 * 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 <svx/sdr/contact/viewcontactofvirtobj.hxx>

#include <svx/svdovirt.hxx>

#include <basegfx/matrix/b2dhommatrix.hxx>

#include <drawinglayer/primitive2d/transformprimitive2d.hxx>

#include <drawinglayer/primitive2d/sdrdecompositiontools2d.hxx>

namespace sdr::contact {

ViewContactOfVirtObj::ViewContactOfVirtObj(SdrVirtObj& rObj)

:   ViewContactOfSdrObj(rObj)

{

}

ViewContactOfVirtObj::~ViewContactOfVirtObj()

{

}

SdrVirtObj& ViewContactOfVirtObj::GetVirtObj() const

{

    return static_cast<SdrVirtObj&>(mrObject);

}

// 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 OutputDevice.

    // As can be seen, with primitives, the problem will be solved using

    // a transformPrimitive, so this solution can stay with primitives.

    return 0;

}

void ViewContactOfVirtObj::createViewIndependentPrimitive2DSequence(drawinglayer::primitive2d::Primitive2DDecompositionVisitor& rVisitor) 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 Primitive2DContainer

    drawinglayer::primitive2d::Primitive2DContainer xSequenceVirtual;

    GetVirtObj().GetReferencedObj().GetViewContact().getViewIndependentPrimitive2DContainer(xSequenceVirtual);

    if(!xSequenceVirtual.empty())

    {

        // create transform primitive

        drawinglayer::primitive2d::Primitive2DReference xReference(

            new drawinglayer::primitive2d::TransformPrimitive2D(

                aObjectMatrix,

                drawinglayer::primitive2d::Primitive2DContainer(std::move(xSequenceVirtual))));

        rVisitor.visit(xReference);

    }

    else

    {

        // always append an invisible outline for the cases where no visible content exists

        const drawinglayer::primitive2d::Primitive2DReference xReference(

            drawinglayer::primitive2d::createHiddenGeometryPrimitives2D(

                aObjectMatrix));

        rVisitor.visit(xReference);

    }

}

}

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