/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * 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/backgroundcolorprimitive2d.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <drawinglayer/primitive2d/polypolygonprimitive2d.hxx>
#include <basegfx/tools/canvastools.hxx>
#include <drawinglayer/geometry/viewinformation2d.hxx>
#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>



using namespace com::sun::star;



namespace drawinglayer
{
    namespace primitive2d
    {
        Primitive2DSequence BackgroundColorPrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
        {
            if(!rViewInformation.getViewport().isEmpty())
            {
                const basegfx::B2DPolygon aOutline(basegfx::tools::createPolygonFromRect(rViewInformation.getViewport()));
                const Primitive2DReference xRef(new PolyPolygonColorPrimitive2D(basegfx::B2DPolyPolygon(aOutline), getBColor()));
                return Primitive2DSequence(&xRef, 1L);
            }
            else
            {
                return Primitive2DSequence();
            }
        }

        BackgroundColorPrimitive2D::BackgroundColorPrimitive2D(
            const basegfx::BColor& rBColor)
        :   BufferedDecompositionPrimitive2D(),
            maBColor(rBColor),
            maLastViewport()
        {
        }

        bool BackgroundColorPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
        {
            if(BufferedDecompositionPrimitive2D::operator==(rPrimitive))
            {
                const BackgroundColorPrimitive2D& rCompare = (BackgroundColorPrimitive2D&)rPrimitive;

                return (getBColor() == rCompare.getBColor());
            }

            return false;
        }

        basegfx::B2DRange BackgroundColorPrimitive2D::getB2DRange(const geometry::ViewInformation2D& rViewInformation) const
        {
            // always as big as the view
            return rViewInformation.getViewport();
        }

        Primitive2DSequence BackgroundColorPrimitive2D::get2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
        {
            ::osl::MutexGuard aGuard( m_aMutex );

            if(getBuffered2DDecomposition().hasElements() && (maLastViewport != rViewInformation.getViewport()))
            {
                // conditions of last local decomposition have changed, delete
                const_cast< BackgroundColorPrimitive2D* >(this)->setBuffered2DDecomposition(Primitive2DSequence());
            }

            if(!getBuffered2DDecomposition().hasElements())
            {
                // remember ViewRange
                const_cast< BackgroundColorPrimitive2D* >(this)->maLastViewport = rViewInformation.getViewport();
            }

            // use parent implementation
            return BufferedDecompositionPrimitive2D::get2DDecomposition(rViewInformation);
        }

        // provide unique ID
        ImplPrimitive2DIDBlock(BackgroundColorPrimitive2D, PRIMITIVE2D_ID_BACKGROUNDCOLORPRIMITIVE2D)

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

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