/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * 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/shadowprimitive2d.hxx>
#include <basegfx/color/bcolormodifier.hxx>
#include <drawinglayer/primitive2d/modifiedcolorprimitive2d.hxx>
#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
#include <basegfx/tools/canvastools.hxx>
#include <drawinglayer/primitive2d/transparenceprimitive2d.hxx>
#include <drawinglayer/primitive2d/unifiedtransparenceprimitive2d.hxx>
#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>


using namespace com::sun::star;


namespace drawinglayer
{
    namespace primitive2d
    {
        ShadowPrimitive2D::ShadowPrimitive2D(
            const basegfx::B2DHomMatrix& rShadowTransform,
            const basegfx::BColor& rShadowColor,
            const Primitive2DContainer& rChildren)
        :   GroupPrimitive2D(rChildren),
            maShadowTransform(rShadowTransform),
            maShadowColor(rShadowColor)
        {
        }

        bool ShadowPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
        {
            if(BasePrimitive2D::operator==(rPrimitive))
            {
                const ShadowPrimitive2D& rCompare = static_cast< const ShadowPrimitive2D& >(rPrimitive);

                return (getShadowTransform() == rCompare.getShadowTransform()
                    && getShadowColor() == rCompare.getShadowColor());
            }

            return false;
        }

        basegfx::B2DRange ShadowPrimitive2D::getB2DRange(const geometry::ViewInformation2D& rViewInformation) const
        {
            basegfx::B2DRange aRetval(getChildren().getB2DRange(rViewInformation));
            aRetval.transform(getShadowTransform());
            return aRetval;
        }

        void ShadowPrimitive2D::get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& /*rViewInformation*/) const
        {
            if(!getChildren().empty())
            {
                // create a modifiedColorPrimitive containing the shadow color and the content
                const basegfx::BColorModifierSharedPtr aBColorModifier(
                    new basegfx::BColorModifier_replace(
                        getShadowColor()));
                const Primitive2DReference xRefA(
                    new ModifiedColorPrimitive2D(
                        getChildren(),
                        aBColorModifier));
                const Primitive2DContainer aSequenceB { xRefA };

                // build transformed primitiveVector with shadow offset and add to target
                rVisitor.append(new TransformPrimitive2D(getShadowTransform(), aSequenceB));
            }
        }

        // provide unique ID
        ImplPrimitive2DIDBlock(ShadowPrimitive2D, PRIMITIVE2D_ID_SHADOWPRIMITIVE2D)

    } // end of namespace primitive2d
} // end of namespace drawinglayer

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