/* -*- 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/.

 *

 */

#include <sal/config.h>

#include <svgrectnode.hxx>

#include <svgsvgnode.hxx>

#include <svgpathnode.hxx>

#include <svggradientnode.hxx>

#include <svgvisitor.hxx>

namespace svgio::svgreader

{

SvgDrawVisitor::SvgDrawVisitor()

    : mpDrawRoot(std::make_shared<gfx::DrawRoot>())

    , mpCurrent(mpDrawRoot)

{

}

void SvgDrawVisitor::visit(svgio::svgreader::SvgNode const& rNode)

{

    switch (rNode.getType())

    {

        case svgio::svgreader::SVGToken::Svg:

        {

            auto const& rSvgNode = static_cast<svgio::svgreader::SvgSvgNode const&>(rNode);

            basegfx::B2DRange aRange = rSvgNode.getCurrentViewPort();

            static_cast<gfx::DrawRoot*>(mpCurrent.get())->maRectangle = aRange;

        }

        break;

        case svgio::svgreader::SVGToken::Rect:

        {

            auto const& rRectNode = static_cast<svgio::svgreader::SvgRectNode const&>(rNode);

            double x = rRectNode.getX().getNumber();

            double y = rRectNode.getY().getNumber();

            double w = rRectNode.getWidth().getNumber();

            double h = rRectNode.getHeight().getNumber();

            auto pRectangle

                = std::make_shared<gfx::DrawRectangle>(basegfx::B2DRange(x, y, x + w, y + h));

            pRectangle->mnRx = rRectNode.getRx().getNumber();

            pRectangle->mnRy = rRectNode.getRy().getNumber();

            pRectangle->mnStrokeWidth

                = rRectNode.getSvgStyleAttributes()->getStrokeWidth().getNumber();

            pRectangle->mnOpacity = rRectNode.getSvgStyleAttributes()->getOpacity().getNumber();

            const basegfx::BColor* pFillColor = rRectNode.getSvgStyleAttributes()->getFill();

            const SvgGradientNode* pFillGradient

                = rRectNode.getSvgStyleAttributes()->getSvgGradientNodeFill();

            if (pFillColor)

            {

                pRectangle->mpFillColor = std::make_shared<basegfx::BColor>(*pFillColor);

            }

            else if (pFillGradient)

            {

                drawinglayer::primitive2d::SvgGradientEntryVector aSvgGradientEntryVector;

                pFillGradient->collectGradientEntries(aSvgGradientEntryVector);

                if (!aSvgGradientEntryVector.empty())

                {

                    auto aGradientInfo = std::make_shared<gfx::LinearGradientInfo>();

                    aGradientInfo->x1 = pFillGradient->getX1().getNumber();

                    aGradientInfo->y1 = pFillGradient->getY1().getNumber();

                    aGradientInfo->x2 = pFillGradient->getX2().getNumber();

                    aGradientInfo->y2 = pFillGradient->getY2().getNumber();

                    std::optional<basegfx::B2DHomMatrix> pGradientTransform

                        = pFillGradient->getGradientTransform();

                    if (pGradientTransform)

                    {

                        aGradientInfo->maMatrix = *pGradientTransform;

                    }

                    pRectangle->mpFillGradient = aGradientInfo;

                    for (auto const& rEntry : aSvgGradientEntryVector)

                    {

                        gfx::GradientStop aStop;

                        aStop.maColor = rEntry.getColor();

                        aStop.mfOffset = rEntry.getOffset();

                        aStop.mfOpacity = rEntry.getOpacity();

                        pRectangle->mpFillGradient->maGradientStops.push_back(aStop);

                    }

                }

            }

            const basegfx::BColor* pStrokeColor = rRectNode.getSvgStyleAttributes()->getStroke();

            if (pStrokeColor)

                pRectangle->mpStrokeColor = std::make_shared<basegfx::BColor>(*pStrokeColor);

            mpCurrent->maChildren.push_back(pRectangle);

        }

        break;

        case svgio::svgreader::SVGToken::Path:

        {

            auto const& rPathNode = static_cast<svgio::svgreader::SvgPathNode const&>(rNode);

            auto pPath = rPathNode.getPath();

            if (pPath)

            {

                auto pDrawPath = std::make_shared<gfx::DrawPath>(*pPath);

                pDrawPath->mnStrokeWidth

                    = rPathNode.getSvgStyleAttributes()->getStrokeWidth().getNumber();

                pDrawPath->mnOpacity = rPathNode.getSvgStyleAttributes()->getOpacity().getNumber();

                const basegfx::BColor* pFillColor = rPathNode.getSvgStyleAttributes()->getFill();

                if (pFillColor)

                    pDrawPath->mpFillColor = std::make_shared<basegfx::BColor>(*pFillColor);

                const basegfx::BColor* pStrokeColor

                    = rPathNode.getSvgStyleAttributes()->getStroke();

                if (pStrokeColor)

                    pDrawPath->mpStrokeColor = std::make_shared<basegfx::BColor>(*pStrokeColor);

                mpCurrent->maChildren.push_back(pDrawPath);

            }

        }

        break;

        default:

            break;

    }

    goToChildren(rNode);

}

void SvgDrawVisitor::goToChildren(svgio::svgreader::SvgNode const& rNode)

{

    for (auto& rChild : rNode.getChildren())

    {

        rChild->accept(*this);

    }

}

} // end of namespace svgio::svgreader

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