/* -*- 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 <svgusenode.hxx>

#include <drawinglayer/primitive2d/transformprimitive2d.hxx>

#include <svgdocument.hxx>

namespace svgio::svgreader

{

        SvgUseNode::SvgUseNode(

            SvgDocument& rDocument,

            SvgNode* pParent)

        :   SvgNode(SVGToken::Use, rDocument, pParent),

            maSvgStyleAttributes(*this),

            mbDecomposingSvgNode(false)

        {

        }

        SvgUseNode::~SvgUseNode()

        {

        }

        const SvgStyleAttributes* SvgUseNode::getSvgStyleAttributes() const

        {

            return checkForCssStyle(maSvgStyleAttributes);

        }

        void SvgUseNode::parseAttribute(SVGToken aSVGToken, const OUString& aContent)

        {

            // call parent

            SvgNode::parseAttribute(aSVGToken, aContent);

            // read style attributes

            maSvgStyleAttributes.parseStyleAttribute(aSVGToken, aContent);

            // parse own

            switch(aSVGToken)

            {

                case SVGToken::Style:

                {

                    readLocalCssStyle(aContent);

                    break;

                }

                case SVGToken::Transform:

                {

                    const basegfx::B2DHomMatrix aMatrix(readTransform(aContent, *this));

                    if(!aMatrix.isIdentity())

                    {

                        setTransform(aMatrix);

                    }

                    break;

                }

                case SVGToken::X:

                {

                    SvgNumber aNum;

                    if(readSingleNumber(aContent, aNum))

                    {

                        maX = aNum;

                    }

                    break;

                }

                case SVGToken::Y:

                {

                    SvgNumber aNum;

                    if(readSingleNumber(aContent, aNum))

                    {

                        maY = aNum;

                    }

                    break;

                }

                case SVGToken::Width:

                {

                    SvgNumber aNum;

                    if(readSingleNumber(aContent, aNum))

                    {

                        if(aNum.isPositive())

                        {

                            maWidth = aNum;

                        }

                    }

                    break;

                }

                case SVGToken::Height:

                {

                    SvgNumber aNum;

                    if(readSingleNumber(aContent, aNum))

                    {

                        if(aNum.isPositive())

                        {

                            maHeight = aNum;

                        }

                    }

                    break;

                }

                case SVGToken::Href:

                case SVGToken::XlinkHref:

                {

                    readLocalLink(aContent, maXLink);

                    break;

                }

                default:

                {

                    break;

                }

            }

        }

        void SvgUseNode::decomposeSvgNode(drawinglayer::primitive2d::Primitive2DContainer& rTarget, bool /*bReferenced*/) const

        {

            drawinglayer::primitive2d::Primitive2DContainer aNewTarget;

            basegfx::B2DHomMatrix aTransform;

            // try to access link to content

            const SvgNode* pXLink = getDocument().findSvgNodeById(maXLink);

            if (pXLink)

            {

                if (Display::None == pXLink->getDisplay() || mbDecomposingSvgNode)

                    return;

                // todo: in case mpXLink is a SVGToken::Svg or SVGToken::Symbol the

                // SVG docs want the getWidth() and getHeight() from this node

                // to be valid for the subtree.

                mbDecomposingSvgNode = true;

                const_cast< SvgNode* >(pXLink)->setAlternativeParent(this);

                pXLink->decomposeSvgNode(aNewTarget, true);

                const_cast< SvgNode* >(pXLink)->setAlternativeParent();

                mbDecomposingSvgNode = false;

                if(aNewTarget.empty())

                    return;

                if(getX().isSet() || getY().isSet())

                {

                    aTransform.translate(

                        getX().solve(*this, NumberType::xcoordinate),

                        getY().solve(*this, NumberType::ycoordinate));

                }

                if(getTransform())

                {

                    aTransform = *getTransform() * aTransform;

                }

            }

            const SvgStyleAttributes* pStyle = getSvgStyleAttributes();

            if(pStyle)

            {

                if(Display::None != getDisplay())

                {

                    pStyle->add_postProcess(rTarget, std::move(aNewTarget), aTransform);

                }

            }

        }

} // end of namespace svgio::svgreader

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