GraphicsView.h

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

Copyright (c) 2008-2009 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 GRAPHICSVIEW_H
#define GRAPHICSVIEW_H

#include "NodeGraphicsItem.h"
#include <QtGui/QGraphicsView>
#include <QtGui/QKeyEvent>
#include <QtGui/QMouseEvent>


namespace Frapper {

class FRAPPER_GUI_EXPORT GraphicsView : public QGraphicsView
{

    Q_OBJECT

public: // constructors and destructors

    GraphicsView ( QWidget *parent = 0 );

    virtual ~GraphicsView ();


public slots: //

    void homeView ();

    void frameAll ();

    void frameSelected ();

    void toggleScrollbars ( bool visible );

private: // events

    virtual void keyPressEvent ( QKeyEvent *event );

    virtual void keyReleaseEvent ( QKeyEvent *event );

    virtual void mousePressEvent ( QMouseEvent *event );

    virtual void mouseMoveEvent ( QMouseEvent *event );

    virtual void mouseReleaseEvent ( QMouseEvent *event );

    virtual void wheelEvent ( QWheelEvent *event );

protected: // functions

    void zoomIn ();

    void zoomOut ();

    void setScale ( qreal s );

    void frame ( const QRectF &rect );

protected: // data

    bool m_viewMode;

    QPoint m_lastPosition;

};

} // end namespace Frapper

#endif