WOnscreenSelectionHandler.h

//---------------------------------------------------------------------------
//
// Project: OpenWalnut ( http://www.openwalnut.org )
//
// Copyright 2009 OpenWalnut Community, BSV@Uni-Leipzig and CNCF@MPI-CBS
// For more information see http://www.openwalnut.org/copying
//
// This file is part of OpenWalnut.
//
// OpenWalnut 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 3 of the License, or
// (at your option) any later version.
//
// OpenWalnut 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 for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with OpenWalnut. If not, see <http://www.gnu.org/licenses/>.
//
//---------------------------------------------------------------------------
 
#ifndef WONSCREENSELECTIONHANDLER_H
#define WONSCREENSELECTIONHANDLER_H
 
#include <osg/Viewport>
#include <osgGA/GUIEventHandler>
#include <osgViewer/Viewer>
 
#include "WOnscreenSelection.h"
 
/**
 * Forward declaration of the WOnscreenSelection.
 */
class WOnscreenSelection;
 
/**
 * Handles the GUIEvents in context of the WOnscreenSelection.
 */
class WOnscreenSelectionHandler : public osgGA::GUIEventHandler
{
public:
    /**
     * Construct a new WDrawHandler object.
     * 
     * \param manager The WOnscreenSelection this belongs to.
     */
    explicit WOnscreenSelectionHandler( WOnscreenSelection* manager );
 
    /**
     * Handles the incoming events.
     * 
     * \param ea        The EventAdapter of the event.
     * \param aa        The ActionAdapter of the event.
     * \return true     Don't propagate the event.
     * \return false    Propagate the event.
     */
    bool handle( const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa );
 
private:
    WOnscreenSelection* m_manager;   //!< The WOnscreenSelection this belongs to.
 
    bool m_mousePressed;            //!< Whether the mouse is pressed or not.
    bool m_shiftPressed;            //!< Whether shift is pressed or not.
};
 
#endif  // WONSCREENSELECTIONHANDLER_H