view data/model/PowerOfTwoZoomConstraint.h @ 1487:71202259002d

Round the zero-point value -- won't make a difference for longer fader widgets, but it's convenient for the level-pan widget when we have 0-10 and want zero at 8 rather than 7

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2006 Chris Cannam.
    
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#ifndef _POWER_OF_TWO_ZOOM_CONSTRAINT_H_
#define _POWER_OF_TWO_ZOOM_CONSTRAINT_H_

#include "base/ZoomConstraint.h"

class PowerOfTwoZoomConstraint : virtual public ZoomConstraint
{
public:
    virtual int getNearestBlockSize(int requestedBlockSize,
                                       RoundingDirection dir = RoundNearest)
        const;
};

#endif