zoominterface.h

/***************************************************************************
                          zoominterface.h  -  description
                             -------------------
    begin                : Fri Sep 12 2003
    copyright            : (C) 2003 by Friedrich W. H. Kossebau
    email                : Friedrich.W.H@Kossebau.de
 ***************************************************************************/
 
/***************************************************************************
 *                                                                         *
 *   This library is free software; you can redistribute it and/or         *
 *   modify it under the terms of the GNU Library General Public           *
 *   License version 2 as published by the Free Software Foundation.       *
 *                                                                         *
 ***************************************************************************/
 
 
#ifndef ZOOMINTERFACE_H
#define ZOOMINTERFACE_H
 
 
namespace KHE
{
 
class ZoomInterface
{
  public:
    virtual void zoomIn( int PointInc ) = 0;
    virtual void zoomIn() = 0;
    virtual void zoomOut( int PointDec ) = 0;
    virtual void zoomOut() = 0;
    virtual void zoomTo( int PointSize ) = 0;
    virtual void unZoom() = 0;
};
 
 
template<class T>
ZoomInterface *zoomInterface( T *t )
{
  if( !t )
    return 0;
 
  return ::tqt_cast<KHE::ZoomInterface*>( t );
}
 
}
 
#endif