/*M///////////////////////////////////////////////////////////////////////////////////////
//
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//
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//  If you do not agree to this license, do not download, install,
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//
//                           License Agreement
//                For Open Source Computer Vision Library
//
// Copyright (C) 2013, OpenCV Foundation, all rights reserved.
// Third party copyrights are property of their respective owners.
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// Redistribution and use in source and binary forms, with or without modification,
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//   * The name of the copyright holders may not be used to endorse or promote products
//     derived from this software without specific prior written permission.
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// This software is provided by the copyright holders and contributors "as is" and
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// Authors:
//  * Ozan Tonkal, ozantonkal@gmail.com
//  * Anatoly Baksheev, Itseez Inc.  myname.mysurname <> mycompany.com
//
//M*/

#ifndef __OPENCV_VIZ_WIDGET_ACCESSOR_HPP__
#define __OPENCV_VIZ_WIDGET_ACCESSOR_HPP__

#include <opencv2/core/cvdef.h>
#include <vtkSmartPointer.h>
#include <vtkProp.h>

namespace cv
{
    namespace viz
    {

//! @addtogroup viz_widget
//! @{

        class Widget;

        /** @brief This class is for users who want to develop their own widgets using VTK library API. :
        */
        struct CV_EXPORTS WidgetAccessor
        {
            /** @brief Returns vtkProp of a given widget.

            @param widget Widget whose vtkProp is to be returned.

            @note vtkProp has to be down cast appropriately to be modified.
                @code
                vtkActor * actor = vtkActor::SafeDownCast(viz::WidgetAccessor::getProp(widget));
                @endcode
             */
            static vtkSmartPointer<vtkProp> getProp(const Widget &widget);
            /** @brief Sets vtkProp of a given widget.

            @param widget Widget whose vtkProp is to be set. @param prop A vtkProp.
             */
            static void setProp(Widget &widget, vtkSmartPointer<vtkProp> prop);
        };

//! @}

    }
}

#endif