svcore
1.9
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00001 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ 00002 00003 /* 00004 Sonic Visualiser 00005 An audio file viewer and annotation editor. 00006 Centre for Digital Music, Queen Mary, University of London. 00007 This file copyright 2006 Chris Cannam. 00008 00009 This program is free software; you can redistribute it and/or 00010 modify it under the terms of the GNU General Public License as 00011 published by the Free Software Foundation; either version 2 of the 00012 License, or (at your option) any later version. See the file 00013 COPYING included with this distribution for more information. 00014 */ 00015 00016 #ifndef _POWER_OF_SQRT_TWO_ZOOM_CONSTRAINT_H_ 00017 #define _POWER_OF_SQRT_TWO_ZOOM_CONSTRAINT_H_ 00018 00019 #include "base/ZoomConstraint.h" 00020 00021 class PowerOfSqrtTwoZoomConstraint : virtual public ZoomConstraint 00022 { 00023 public: 00024 virtual int getNearestBlockSize(int requestedBlockSize, 00025 RoundingDirection dir = RoundNearest) 00026 const; 00027 00028 virtual int getNearestBlockSize(int requestedBlockSize, 00029 int &type, 00030 int &power, 00031 RoundingDirection dir = RoundNearest) 00032 const; 00033 00034 virtual int getMinCachePower() const { return 6; } 00035 }; 00036 00037 #endif 00038