view base/ColourMapper.h @ 299:576be0d0d218

* Merge transform directory from sv-match-alignment branch
  (the previous comment included notes for this stuff, but I missed it
  in the actual merge)
* Fix crash when a transform fails to create an output model and the
  thread that created the transform then deletes its input model thinking
  it's no longer needed, even though the transform run thread is still
  using it -- fix is to wait() on the transform before returning the
  null output model

/* -*- 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