//##################################################################################################
//
//   Custom Visualization Core library
//   Copyright (C) 2011-2013 Ceetron AS
//
//   This library may be used under the terms of either the GNU General Public License or
//   the GNU Lesser General Public License as follows:
//
//   GNU General Public License Usage
//   This library is free software: you can redistribute it and/or modify
//   it under the terms of the GNU General Public License as published by
//   the Free Software Foundation, either version 3 of the License, or
//   (at your option) any later version.
//
//   This library is distributed in the hope that it will be useful, but WITHOUT ANY
//   WARRANTY; without even the implied warranty of MERCHANTABILITY or
//   FITNESS FOR A PARTICULAR PURPOSE.
//
//   See the GNU General Public License at <<http://www.gnu.org/licenses/gpl.html>>
//   for more details.
//
//   GNU Lesser General Public License Usage
//   This library is free software; you can redistribute it and/or modify
//   it under the terms of the GNU Lesser General Public License as published by
//   the Free Software Foundation; either version 2.1 of the License, or
//   (at your option) any later version.
//
//   This library is distributed in the hope that it will be useful, but WITHOUT ANY
//   WARRANTY; without even the implied warranty of MERCHANTABILITY or
//   FITNESS FOR A PARTICULAR PURPOSE.
//
//   See the GNU Lesser General Public License at <<http://www.gnu.org/licenses/lgpl-2.1.html>>
//   for more details.
//
//##################################################################################################


#pragma once

#include "cafNavigationPolicy.h"
#include "cvfManipulatorTrackball.h"

class QMouseEvent;
class QWheelEvent;

namespace caf
{

class CeetronNavigation : public NavigationPolicy
{
public:
    CeetronNavigation();
    virtual ~CeetronNavigation();
protected:
    // General navigation policy reimplememtation
    virtual void    init();
    virtual bool    handleInputEvent(QInputEvent* inputEvent);
    virtual void    setView( const cvf::Vec3d& alongDirection, const cvf::Vec3d& upDirection );
    virtual cvf::Vec3d  pointOfInterest(); 
    virtual void        setPointOfInterest(cvf::Vec3d poi);

    // Ceetron navigation stuff
    void            mouseMoveEvent(QMouseEvent* event);
    void            mousePressEvent(QMouseEvent* event);
    void            mouseReleaseEvent(QMouseEvent* event);
    void            wheelEvent(QWheelEvent* event);

    cvf::ManipulatorTrackball::NavigationType 
                    getNavigationTypeFromMouseButtons(Qt::MouseButtons mouseButtons);
    void            setCursorFromCurrentState();

    void            initializeRotationCenter();

    cvf::ref<cvf::ManipulatorTrackball> 
                    m_trackball;
    bool            m_isRotCenterInitialized; 
    cvf::Vec3d      m_pointOfInterest;
};


} // End namespace caf