PainterGraphicsScene.h

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/*
-----------------------------------------------------------------------------
This source file is part of FRAPPER
research.animationsinstitut.de
sourceforge.net/projects/frapper

Copyright (c) 2008-2012 Filmakademie Baden-Wuerttemberg, Institute of Animation 

This program 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; version 2.1 of the License.

This program 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
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
-----------------------------------------------------------------------------
*/


#ifndef PAINTERGRAPHICSSCENE_H
#define PAINTERGRAPHICSSCENE_H

#include "FrapperPrerequisites.h"

#include <QtGui/QGraphicsScene>
#include <QtGui/QGraphicsItem>

namespace PainterPanel {
using namespace Frapper;

    class PainterGraphicsScene: public QGraphicsScene
    {
        public: // constructors and destructors

        PainterGraphicsScene () : QGraphicsScene(),
            m_background(NULL)
        {};

        virtual ~PainterGraphicsScene ()
        {};

        void setBackground( QImage image )
        {
            if( m_background )
                delete m_background;

            // set new background item
            // add background image as pixmap item
            m_background = new QGraphicsPixmapItem( QPixmap::fromImage(image));
            m_background->setZValue(-1000.0f);
            m_background->setFlag( QGraphicsItem::ItemIsSelectable, false );

            this->addItem(m_background);
        }

        QGraphicsItem* getBackground() const { return m_background; }
        
        void renderToImage( QImage &image )
        {
            QPainter painter( &image );
            if( m_background )
                this->render( &painter, image.rect(), m_background->boundingRect());
            else
                this->render( &painter, image.rect());
        }

        void clear()
        {
            Q_FOREACH( QGraphicsItem *item, this->items() ) {
                if( item != m_background)
                    delete item;
            }
        }

        private: // data
            
            QGraphicsItem* m_background;

    }; //PainterGraphicsBaseItem

} // end namespace Frapper

#endif // PAINTERGRAPHICSSCENE_H