annotate layer/TimeInstantLayer.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 2006 Chris Cannam.
    
    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 _TIME_INSTANT_LAYER_H_
#define _TIME_INSTANT_LAYER_H_

#include "SingleColourLayer.h"
#include "data/model/SparseOneDimensionalModel.h"

#include <QObject>
#include <QColor>

class View;
class QPainter;

class TimeInstantLayer : public SingleColourLayer
{
    Q_OBJECT

public:
    TimeInstantLayer();
    virtual ~TimeInstantLayer();

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

    virtual QString getLabelPreceding(sv_frame_t) const;
    virtual QString getFeatureDescription(LayerGeometryProvider *v, QPoint &) const;

    virtual bool snapToFeatureFrame(LayerGeometryProvider *v, sv_frame_t &frame,
                                    int &resolution,
                                    SnapType snap) const;

    virtual void drawStart(LayerGeometryProvider *v, QMouseEvent *);
    virtual void drawDrag(LayerGeometryProvider *v, QMouseEvent *);
    virtual void drawEnd(LayerGeometryProvider *v, QMouseEvent *);

    virtual void eraseStart(LayerGeometryProvider *v, QMouseEvent *);
    virtual void eraseDrag(LayerGeometryProvider *v, QMouseEvent *);
    virtual void eraseEnd(LayerGeometryProvider *v, QMouseEvent *);

    virtual void editStart(LayerGeometryProvider *v, QMouseEvent *);
    virtual void editDrag(LayerGeometryProvider *v, QMouseEvent *);
    virtual void editEnd(LayerGeometryProvider *v, QMouseEvent *);

    virtual bool editOpen(LayerGeometryProvider *, QMouseEvent *);

    virtual void moveSelection(Selection s, sv_frame_t newStartFrame);
    virtual void resizeSelection(Selection s, Selection newSize);
    virtual void deleteSelection(Selection s);

    virtual void copy(LayerGeometryProvider *v, Selection s, Clipboard &to);
    virtual bool paste(LayerGeometryProvider *v, const Clipboard &from, sv_frame_t frameOffset,
                       bool interactive);

    virtual const Model *getModel() const { return m_model; }
    void setModel(SparseOneDimensionalModel *model);

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

    enum PlotStyle {
        PlotInstants,
        PlotSegmentation
    };

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

    virtual bool isLayerScrollable(const LayerGeometryProvider *v) const;

    virtual bool isLayerEditable() const { return true; }

    virtual int getCompletion(LayerGeometryProvider *) const { return m_model->getCompletion(); }

    virtual bool needsTextLabelHeight() const { return m_model->hasTextLabels(); }

    virtual bool getValueExtents(double &, double &, bool &, QString &) const {
        return false;
    }

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

    void setProperties(const QXmlAttributes &attributes);

    virtual ColourSignificance getLayerColourSignificance() const {
        if (m_plotStyle == PlotSegmentation) {
            return ColourHasMeaningfulValue;
        } else {
            return ColourDistinguishes;
        }
    }

    virtual int getVerticalScaleWidth(LayerGeometryProvider *, bool, QPainter &) const { return 0; }

protected:
    SparseOneDimensionalModel::PointList getLocalPoints(LayerGeometryProvider *v, int) const;

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

    bool clipboardAlignmentDiffers(LayerGeometryProvider *v, const Clipboard &) const;

    SparseOneDimensionalModel *m_model;
    bool m_editing;
    SparseOneDimensionalModel::Point m_editingPoint;
    SparseOneDimensionalModel::EditCommand *m_editingCommand;
    PlotStyle m_plotStyle;

    void finish(SparseOneDimensionalModel::EditCommand *command) {
        Command *c = command->finish();
        if (c) CommandHistory::getInstance()->addCommand(c, false);
    }
};

#endif