view base/ColourMapper.h @ 348:edda24bb85fc

* Skip ID3 block when reading MP3 files (so long as ID3 support is included)
* Show progress when retrieving audio file from playlist
* Avoid -- but do not actually fix -- segmentation fault on exit.  I am
  totally stumped at the moment about why both the PA and JACK audio targets
  should crash when properly shut down.  For the moment, we just don't shut
  them down...
* Fix incorrect behaviour (introduced on Friday as part of a different fix)
  when replacing main model in situation where no current main model exists

/* -*- 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 _COLOUR_MAPPER_H_
#define _COLOUR_MAPPER_H_

#include <QObject>
#include <QColor>
#include <QString>

/**
 * A class for mapping intensity values onto various colour maps.
 */

class ColourMapper : public QObject
{
    Q_OBJECT

public:
    ColourMapper(int map, float minValue, float maxValue);
    virtual ~ColourMapper();

    enum StandardMap {
        DefaultColours,
        Sunset,
        WhiteOnBlack,
        BlackOnWhite,
        RedOnBlue,
        YellowOnBlack,
        BlueOnBlack,
        FruitSalad,
        Banded,
        Highlight,
        Printer
    };

    int getMap() const { return m_map; }
    float getMinValue() const { return m_min; }
    float getMaxValue() const { return m_max; }

    static int getColourMapCount();
    static QString getColourMapName(int n);

    QColor map(float value) const;

    QColor getContrastingColour() const; // for cursors etc
    bool hasLightBackground() const;

protected:
    int m_map;
    float m_min;
    float m_max;
};

#endif