zoominterface.h

00001 /***************************************************************************
00002                           zoominterface.h  -  description
00003                              -------------------
00004     begin                : Fri Sep 12 2003
00005     copyright            : (C) 2003 by Friedrich W. H. Kossebau
00006     email                : Friedrich.W.H@Kossebau.de
00007  ***************************************************************************/
00008 
00009 /***************************************************************************
00010  *                                                                         *
00011  *   This library is free software; you can redistribute it and/or         *
00012  *   modify it under the terms of the GNU Library General Public           *
00013  *   License version 2 as published by the Free Software Foundation.       *
00014  *                                                                         *
00015  ***************************************************************************/
00016 
00017 
00018 #ifndef ZOOMINTERFACE_H
00019 #define ZOOMINTERFACE_H
00020 
00021 
00022 namespace KHE
00023 {
00024 
00035 class ZoomInterface
00036 {
00037   public:
00041     virtual void zoomIn( int PointInc ) = 0;
00045     virtual void zoomIn() = 0;
00049     virtual void zoomOut( int PointDec ) = 0;
00053     virtual void zoomOut() = 0;
00057     virtual void zoomTo( int PointSize ) = 0;
00059     virtual void unZoom() = 0;
00060 };
00061 
00062 
00068 template<class T>
00069 ZoomInterface *zoomInterface( T *t )
00070 {
00071   if( !t )
00072     return 0;
00073 
00074   return static_cast<ZoomInterface*>( t->qt_cast("KHE::ZoomInterface") );
00075 }
00076 
00077 }
00078 
00079 #endif
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