/* -*- 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 .

 */

#pragma once

#include "svgnode.hxx"

#include "svgstyleattributes.hxx"

#include "svgtools.hxx"

#include <drawinglayer/primitive2d/svggradientprimitive2d.hxx>

namespace svgio::svgreader

    {

        class SvgGradientNode final : public SvgNode

        {

        private:

            /// use styles

            SvgStyleAttributes          maSvgStyleAttributes;

            /// linear gradient values

            SvgNumber                   maX1;

            SvgNumber                   maY1;

            SvgNumber                   maX2;

            SvgNumber                   maY2;

            /// radial gradient values

            SvgNumber                   maCx;

            SvgNumber                   maCy;

            SvgNumber                   maR;

            SvgNumber                   maFx;

            SvgNumber                   maFy;

            /// variable scan values, dependent of given XAttributeList

            SvgUnits                    maGradientUnits;

            drawinglayer::primitive2d::SpreadMethod   maSpreadMethod;

            std::optional<basegfx::B2DHomMatrix>    mpaGradientTransform;

            /// link to another gradient used as style. If maXLink

            /// is set, the node can be fetched on demand by using

            // tryToFindLink (buffered)

            mutable bool mbResolvingLink; // protect against infinite link recursion

            OUString               maXLink;

            const SvgGradientNode*      mpXLink;

            /// link on demand

            void tryToFindLink();

        public:

            SvgGradientNode(

                SVGToken aType,

                SvgDocument& rDocument,

                SvgNode* pParent);

            virtual ~SvgGradientNode() override;

            virtual const SvgStyleAttributes* getSvgStyleAttributes() const override;

            virtual void parseAttribute(SVGToken aSVGToken, const OUString& aContent) override;

            /// collect gradient stop entries

            void collectGradientEntries(drawinglayer::primitive2d::SvgGradientEntryVector& aVector) const;

            /// x1 content

            SvgNumber getX1() const;

            /// y1 content

            SvgNumber getY1() const;

            /// x2 content

            SvgNumber getX2() const;

            /// y2 content

            SvgNumber getY2() const;

            /// Cx content

            SvgNumber getCx() const;

            /// Cy content

            SvgNumber getCy() const;

            /// R content

            SvgNumber getR() const;

            /// Fx content

            const SvgNumber* getFx() const;

            /// Fy content

            const SvgNumber* getFy() const;

            /// gradientUnits content

            SvgUnits getGradientUnits() const { return maGradientUnits; }

            void setGradientUnits(const SvgUnits aGradientUnits) { maGradientUnits = aGradientUnits; }

            /// SpreadMethod content

            drawinglayer::primitive2d::SpreadMethod getSpreadMethod() const { return maSpreadMethod; }

            void setSpreadMethod(const drawinglayer::primitive2d::SpreadMethod aSpreadMethod) { maSpreadMethod = aSpreadMethod; }

            /// transform content, set if found in current context

            std::optional<basegfx::B2DHomMatrix> getGradientTransform() const;

            void setGradientTransform(const std::optional<basegfx::B2DHomMatrix>& pMatrix) { mpaGradientTransform = pMatrix; }

        };

} // end of namespace svgio::svgreader

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