WTransferFunctionBackground.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 WTRANSFERFUNCTIONBACKGROUND_H
#define WTRANSFERFUNCTIONBACKGROUND_H
 
#include "QGraphicsPixmapItem"
 
class WTransferFunctionWidget;
 
/**
 * A QGraphicsItem that displays a pixmap in the background of the scene.
 *
 * Compared to the QT implementation, the function setMyPixmap (which has
 * to be used because setPixmap is not virutal) scales the item to the size
 * of the scene, so it covers the entire area.
 */
class WTransferFunctionBackground : public QGraphicsPixmapItem
{
public:
    /** type of base class */
    typedef QGraphicsPixmapItem BaseClass;
 
    /**
     * Default constructor.
     *
     * \param parent pointer to parent widget
     */
    explicit WTransferFunctionBackground( WTransferFunctionWidget* parent = 0x0 );
 
    /**
     * Default destructor.
     */
    virtual ~WTransferFunctionBackground();
 
    /**
     * Get the bounding rectangle.
     *
     * \returns the bounding rectangle
     */
    QRectF boundingRect() const;
 
    /**
     * Set the background pixmap that will be displayed.
     * In our case, this is the transfer function
     *
     * \param pixmap the pixmap to display
     */
    void setMyPixmap( const QPixmap& pixmap );
};
 
#endif  // WTRANSFERFUNCTIONBACKGROUND_H