view layer/SingleColourLayer.h @ 1386:fc3d89f88690 spectrogramparam

Use log-frequency rather than log-bin for calculating x coord in spectrum. This has the advantage that frequency positions don't move when we change the window size or oversampling ratio, but it does give us an unhelpfully large amount of space for very low frequencies - to be considered

/* -*- 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 2007 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 SV_SINGLE_COLOUR_LAYER_H
#define SV_SINGLE_COLOUR_LAYER_H

#include "Layer.h"
#include <QColor>
#include <vector>
#include <map>

class SingleColourLayer : public Layer
{
    Q_OBJECT
    
public:
    /**
     * Set the colour used to draw primary items in the layer. The
     * colour value is a colour database index as returned by
     * ColourDatabase::getColourIndex().
     */
    virtual void setBaseColour(int);

    /**
     * Retrieve the current primary drawing colour, as a
     * ColourDatabase index value.
     */
    virtual int getBaseColour() const;

    /**
     * Return true if the layer currently has a dark colour on a light
     * background, false if it has a light colour on a dark
     * background.
     */
    virtual bool hasLightBackground() const;

    /**
     * Implements Layer::getLayerColourSignificance()
     */
    virtual ColourSignificance getLayerColourSignificance() const {
        return ColourDistinguishes;
    }

    virtual QPixmap getLayerPresentationPixmap(QSize size) const;

    virtual PropertyList getProperties() const;
    virtual QString getPropertyLabel(const PropertyName &) const;
    virtual PropertyType getPropertyType(const PropertyName &) const;
    virtual QString getPropertyGroupName(const PropertyName &) const;
    virtual int getPropertyRangeAndValue(const PropertyName &,
                                         int *min, int *max, int *deflt) const;
    virtual QString getPropertyValueLabel(const PropertyName &,
                                          int value) const;
    virtual RangeMapper *getNewPropertyRangeMapper(const PropertyName &) const;
    virtual void setProperty(const PropertyName &, int value);

    virtual void toXml(QTextStream &stream, QString indent = "",
                       QString extraAttributes = "") const;

    virtual void setProperties(const QXmlAttributes &attributes);

    virtual void setDefaultColourFor(LayerGeometryProvider *v);

protected:
    SingleColourLayer();
    virtual ~SingleColourLayer();

    virtual QColor getBaseQColor() const;
    virtual QColor getBackgroundQColor(LayerGeometryProvider *v) const;
    virtual QColor getForegroundQColor(LayerGeometryProvider *v) const;
    std::vector<QColor> getPartialShades(LayerGeometryProvider *v) const;

    virtual void flagBaseColourChanged() { }
    virtual int getDefaultColourHint(bool /* darkBackground */,
                                     bool & /* impose */) { return -1; }

    typedef std::map<int, int> ColourRefCount;
    static ColourRefCount m_colourRefCount;

    int m_colour;
    bool m_colourExplicitlySet;
    bool m_defaultColourSet;

private:
    void refColor();
    void unrefColor();
};

#endif