/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the Collabora Office 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 <drawinglayer/primitive2d/fillgraphicprimitive2d.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <texture/texture.hxx>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
#include <drawinglayer/primitive2d/graphicprimitivehelper2d.hxx>
#include <utility>
#include <vcl/graph.hxx>


using namespace com::sun::star;


namespace drawinglayer::primitive2d
{
        Primitive2DReference FillGraphicPrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& /*rViewInformation*/) const
        {
            const attribute::FillGraphicAttribute& rAttribute = getFillGraphic();

            if(rAttribute.isDefault())
                return nullptr;

            const Graphic& rGraphic = rAttribute.getGraphic();

            if(GraphicType::Bitmap != rGraphic.GetType() && GraphicType::GdiMetafile != rGraphic.GetType())
                return nullptr;

            const Size aSize(rGraphic.GetPrefSize());

            if(!(aSize.Width() && aSize.Height()))
                return nullptr;

            // we have a graphic (bitmap or metafile) with some size
            Primitive2DContainer aContainer;
            if(rAttribute.getTiling())
            {
                // get object range and create tiling matrices
                std::vector< basegfx::B2DHomMatrix > aMatrices;
                texture::GeoTexSvxTiled aTiling(
                    rAttribute.getGraphicRange(),
                    rAttribute.getOffsetX(),
                    rAttribute.getOffsetY());

                // get matrices and realloc retval
                aTiling.appendTransformations(aMatrices);

                // prepare content primitive
                Primitive2DContainer xSeq;
                create2DDecompositionOfGraphic(xSeq,
                    rGraphic,
                    basegfx::B2DHomMatrix(),
                    getTransparency());

                rtl::Reference<GroupPrimitive2D> xGroup = new GroupPrimitive2D(std::move(xSeq));
                for(const auto &a : aMatrices)
                {
                    aContainer.push_back(new TransformPrimitive2D(
                        getTransformation() * a,
                        *xGroup));
                }
            }
            else
            {
                // add graphic without tiling
                const basegfx::B2DHomMatrix aObjectTransform(
                    getTransformation() * basegfx::utils::createScaleTranslateB2DHomMatrix(
                        rAttribute.getGraphicRange().getRange(),
                        rAttribute.getGraphicRange().getMinimum()));

                create2DDecompositionOfGraphic(aContainer,
                    rGraphic,
                    aObjectTransform,
                    getTransparency());
            }

            return new GroupPrimitive2D(std::move(aContainer));
        }

        FillGraphicPrimitive2D::FillGraphicPrimitive2D(
            basegfx::B2DHomMatrix aTransformation,
            const attribute::FillGraphicAttribute& rFillGraphic,
            double fTransparency)
        :   maTransformation(std::move(aTransformation))
        , maFillGraphic(rFillGraphic)
        , maOffsetXYCreatedBitmap()
        , mfTransparency(std::max(0.0, std::min(1.0, fTransparency)))
        {
        }

        bool FillGraphicPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
        {
            if(BufferedDecompositionPrimitive2D::operator==(rPrimitive))
            {
                const FillGraphicPrimitive2D& rCompare = static_cast< const FillGraphicPrimitive2D& >(rPrimitive);

                return (getTransformation() == rCompare.getTransformation()
                    && getFillGraphic() == rCompare.getFillGraphic()
                    && basegfx::fTools::equal(getTransparency(), rCompare.getTransparency()));
            }

            return false;
        }

        basegfx::B2DRange FillGraphicPrimitive2D::getB2DRange(const geometry::ViewInformation2D& /*rViewInformation*/) const
        {
            // return range of it
            basegfx::B2DPolygon aPolygon(basegfx::utils::createUnitPolygon());
            aPolygon.transform(getTransformation());

            return aPolygon.getB2DRange();
        }

        // provide unique ID
        sal_uInt32 FillGraphicPrimitive2D::getPrimitive2DID() const
        {
            return PRIMITIVE2D_ID_FILLGRAPHICPRIMITIVE2D;
        }

} // end of namespace

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