annotate layer/PaintAssistant.h @ 959:2633a1d73e39

Address #1214, layer import produces wrong layer type. We needed a more principled approach to making sure the format gets updated properly and the dialog elements are consistent (basically separating making the dialog elements consistent from subsequently updating the format). This change should provide that, though there may be gotchas still.

/* -*- 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 2006-2007 Chris Cannam and QMUL.
   
    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 _PAINT_ASSISTANT_H_
#define _PAINT_ASSISTANT_H_

#include <QRect>
#include <vector>

class QPainter;

class PaintAssistant
{
public:
    enum Scale { LinearScale, MeterScale, dBScale };

    static void paintVerticalLevelScale(QPainter &p, QRect rect,
                                        double minVal, double maxVal,
                                        Scale scale, int &multRtn,
                                        std::vector<int> *markCoordRtns = 0);

    static int getYForValue(Scale scale, double value,
                            double minVal, double maxVal,
                            int minY, int height);
};

#endif