view layer/SliceLayer.h @ 1551:e79731086b0f

Fixes to NoteLayer, particularly to calculation of vertical scale when model unit is not Hz. To avoid inconsistency we now behave as if the unit is always Hz from the point of view of the external API and display, converting at the point where we obtain values from the events themselves. Also various fixes to editing.

/* -*- 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 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_SLICE_LAYER_H
#define SV_SLICE_LAYER_H

#include "SingleColourLayer.h"

#include "base/Window.h"

#include "data/model/DenseThreeDimensionalModel.h"

#include <QColor>

class SliceLayer : public SingleColourLayer
{
    Q_OBJECT

public:
    SliceLayer();
    ~SliceLayer();
    
    ModelId getModel() const override { return {}; }

    void setSliceableModel(ModelId model);

    void paint(LayerGeometryProvider *v, QPainter &paint, QRect rect) const override;

    QString getFeatureDescription(LayerGeometryProvider *v, QPoint &) const override;

    int getVerticalScaleWidth(LayerGeometryProvider *v, bool, QPainter &) const override;
    void paintVerticalScale(LayerGeometryProvider *v, bool, QPainter &paint, QRect rect) const override;

    ColourSignificance getLayerColourSignificance() const override {
        return ColourAndBackgroundSignificant;
    }

    bool hasLightBackground() const override;

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

    bool getValueExtents(double &min, double &max,
                                 bool &logarithmic, QString &unit) const override;

    bool getDisplayExtents(double &min, double &max) const override;
    bool setDisplayExtents(double min, double max) override;

    int getVerticalZoomSteps(int &defaultStep) const override;
    int getCurrentVerticalZoomStep() const override;
    void setVerticalZoomStep(int) override;
    RangeMapper *getNewVerticalZoomRangeMapper() const override;

    virtual bool hasTimeXAxis() const override { return false; }

    virtual void zoomToRegion(const LayerGeometryProvider *, QRect) override;

    bool isLayerScrollable(const LayerGeometryProvider *) const override { return false; }

    enum EnergyScale { LinearScale, MeterScale, dBScale, AbsoluteScale };

    enum SamplingMode { NearestSample, SampleMean, SamplePeak };

    enum PlotStyle { PlotLines, PlotSteps, PlotBlocks, PlotFilledBlocks };

    enum BinScale { LinearBins, LogBins, InvertedLogBins };

    bool usesSolidColour() const { return m_plotStyle == PlotFilledBlocks; }
    
    void setFillColourMap(int);
    int getFillColourMap() const { return m_colourMap; }

    void setEnergyScale(EnergyScale);
    EnergyScale getEnergyScale() const { return m_energyScale; }

    void setSamplingMode(SamplingMode);
    SamplingMode getSamplingMode() const { return m_samplingMode; }

    void setPlotStyle(PlotStyle style);
    PlotStyle getPlotStyle() const { return m_plotStyle; }

    void setBinScale(BinScale scale);
    BinScale getBinScale() const { return m_binScale; }

    void setThreshold(float);
    float getThreshold() const { return m_threshold; }

    void setGain(float gain);
    float getGain() const;

    void setNormalize(bool n);
    bool getNormalize() const;

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

public slots:
    void sliceableModelReplaced(ModelId, ModelId);

protected:
    /// Convert a (possibly non-integral) bin into x-coord. May be overridden
    virtual double getXForBin(const LayerGeometryProvider *, double bin) const;
    
    /// Convert an x-coord into (possibly non-integral) bin. May be overridden
    virtual double getBinForX(const LayerGeometryProvider *, double x) const;

    /// Convert a point such as a bin number into x-coord, given max &
    /// min. For use by getXForBin etc
    double getXForScalePoint(const LayerGeometryProvider *,
                             double p, double pmin, double pmax) const;

    /// Convert an x-coord into a point such as a bin number, given
    /// max & min. For use by getBinForX etc
    double getScalePointForX(const LayerGeometryProvider *,
                             double x, double pmin, double pmax) const;

    virtual double getYForValue(const LayerGeometryProvider *v, double value, double &norm) const;
    virtual double getValueForY(const LayerGeometryProvider *v, double y) const;
    
    virtual QString getFeatureDescriptionAux(LayerGeometryProvider *v, QPoint &,
                                             bool includeBinDescription,
                                             int &minbin, int &maxbin,
                                             int &range) const;

    // This curve may, of course, be flat -- the spectrum uses it for
    // normalizing the fft results by the fft size (with 1/(fftsize/2)
    // in each bin).
    typedef std::vector<float> BiasCurve;
    virtual void getBiasCurve(BiasCurve &) const { return; }

    virtual float getThresholdDb() const;

    int getDefaultColourHint(bool dark, bool &impose) override;

    // Determine how the bins are lined up
    // horizontally. BinsCentredOnScalePoint means we operate like a
    // spectrum, where a bin maps to a specific frequency, and so the
    // bin should be visually centred on the scale point that
    // corresponds to that frequency. BinsSpanScalePoints means we
    // have numbered or labelled bins that are not mapped to a
    // continuous scale, like a typical chromagram output, and so bin
    // N spans from scale point N to N+1.  This is a fundamental
    // quality of the class or input data, not a user-configurable
    // property.
    //
    enum BinAlignment {
        BinsCentredOnScalePoints,
        BinsSpanScalePoints
    };

    ModelId                     m_sliceableModel; // a DenseThreeDimensionalModel
    BinAlignment                m_binAlignment;
    int                         m_colourMap;
    bool                        m_colourInverted;
    EnergyScale                 m_energyScale;
    SamplingMode                m_samplingMode;
    PlotStyle                   m_plotStyle;
    BinScale                    m_binScale;
    bool                        m_normalize;
    float                       m_threshold;
    float                       m_initialThreshold;
    float                       m_gain;
    int                         m_minbin;
    int                         m_maxbin;
    mutable std::vector<int>    m_scalePoints;
    mutable int                 m_scalePaintHeight;
    mutable std::map<int, int>  m_xorigins; // LayerGeometryProvider id -> x
    mutable std::map<int, int>  m_yorigins; // LayerGeometryProvider id -> y
    mutable std::map<int, int>  m_heights;  // LayerGeometryProvider id -> h
    mutable sv_frame_t          m_currentf0;
    mutable sv_frame_t          m_currentf1;
    mutable std::vector<float>  m_values;
};

#endif