/* -*- 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
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 *   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 .
 */

#ifndef _CPPCANVAS_CANVASGRAPHICHELPER_HXX
#define _CPPCANVAS_CANVASGRAPHICHELPER_HXX

#include <com/sun/star/rendering/RenderState.hpp>
#include <basegfx/polygon/b2dpolypolygon.hxx>

#include <cppcanvas/canvasgraphic.hxx>

#include <boost/optional.hpp>

namespace com { namespace sun { namespace star { namespace rendering
{
    class  XGraphicDevice;
} } } }


/* Definition of CanvasGraphicHelper class */

namespace cppcanvas
{

    namespace internal
    {

        class CanvasGraphicHelper : public virtual CanvasGraphic
        {
        public:
            CanvasGraphicHelper( const CanvasSharedPtr& rParentCanvas );

            // CanvasGraphic implementation
            virtual void                             setTransformation( const ::basegfx::B2DHomMatrix& rMatrix );
            virtual ::basegfx::B2DHomMatrix          getTransformation() const;
            virtual void                             setClip( const ::basegfx::B2DPolyPolygon& rClipPoly );
            virtual void                             setClip();
            virtual ::basegfx::B2DPolyPolygon const* getClip() const;
            virtual void                             setCompositeOp( CompositeOp aOp );
            virtual CompositeOp                      getCompositeOp() const;

        protected:
            // for our clients
            // ===============
            CanvasSharedPtr                                                                 getCanvas() const;
            ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XGraphicDevice > getGraphicDevice() const;
            const ::com::sun::star::rendering::RenderState&                                 getRenderState() const;

        private:
            mutable ::com::sun::star::rendering::RenderState                                maRenderState;

            boost::optional<basegfx::B2DPolyPolygon>                                        maClipPolyPolygon;
            CanvasSharedPtr                                                                 mpCanvas;
            ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XGraphicDevice > mxGraphicDevice;
        };

    }
}

#endif /* _CPPCANVAS_CANVASGRAPHICHELPER_HXX */

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