view layer/FlexiNoteLayer.h @ 1127:9fb8dfd7ce4c spectrogram-minor-refactor

Fix threshold in spectrogram -- it wasn't working in the last release.
There is a new protocol for this. Formerly the threshold parameter had a
range from -50dB to 0 with the default at -50, and -50 treated internally
as "no threshold". However, there was a hardcoded, hidden internal threshold
for spectrogram colour mapping at -80dB with anything below this being rounded
to zero. Now the threshold parameter has range -81 to -1 with the default
at -80, -81 is treated internally as "no threshold", and there is no hidden
internal threshold. So the default behaviour is the same as before, an
effective -80dB threshold, but it is now possible to change this in both
directions. Sessions reloaded from prior versions may look slightly different
because, if the session says there should be no threshold, there will now
actually be no threshold instead of having the hidden internal one.

Still need to do something in the UI to make it apparent that the -81dB
setting removes the threshold entirely. This is at least no worse than the
previous, also obscured, magic -50dB setting.

/* -*- 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 _FLEXINOTE_LAYER_H_
#define _FLEXINOTE_LAYER_H_

#define NOTE_HEIGHT 16

#include "SingleColourLayer.h"
#include "VerticalScaleLayer.h"

#include "data/model/FlexiNoteModel.h"

#include <QObject>
#include <QColor>

class View;
class QPainter;
class SparseTimeValueModel;

class FlexiNoteLayer : public SingleColourLayer,
                       public VerticalScaleLayer
{
    Q_OBJECT

public:
    FlexiNoteLayer();

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

    virtual int getVerticalScaleWidth(LayerGeometryProvider *v, bool, QPainter &) const;
    virtual void paintVerticalScale(LayerGeometryProvider *v, bool, QPainter &paint, QRect rect) 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 void splitStart(LayerGeometryProvider *v, QMouseEvent *);
    virtual void splitEnd(LayerGeometryProvider *v, QMouseEvent *);
    
    virtual void addNote(LayerGeometryProvider *v, QMouseEvent *e);

    virtual void mouseMoveEvent(LayerGeometryProvider *v, QMouseEvent *);

    virtual bool editOpen(LayerGeometryProvider *v, QMouseEvent *);

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

    void splitNotesAt(LayerGeometryProvider *v, sv_frame_t frame);
    void snapSelectedNotesToPitchTrack(LayerGeometryProvider *v, Selection s);
    void mergeNotes(LayerGeometryProvider *v, Selection s, bool inclusive);

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

    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 void setProperty(const PropertyName &, int value);

    enum VerticalScale {
        AutoAlignScale,
        LinearScale,
        LogScale,
        MIDIRangeScale
    };
    
    //GF: Tonioni: context sensitive note edit actions (denoted clockwise from top).
    enum EditMode {
        DragNote,
        RightBoundary,
        SplitNote,
        LeftBoundary
    };
    
    void setIntelligentActions(bool on) { m_intelligentActions=on; }

    void setVerticalScale(VerticalScale scale);
    VerticalScale getVerticalScale() const { return m_verticalScale; }

    virtual bool isLayerScrollable(const LayerGeometryProvider *v) const;

    virtual bool isLayerEditable() const { return true; }

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

    virtual bool getValueExtents(double &min, double &max,
                                 bool &log, QString &unit) const;

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

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

    /**
     * Add a note-on.  Used when recording MIDI "live".  The note will
     * not be finally added to the layer until the corresponding
     * note-off.
     */
    void addNoteOn(sv_frame_t frame, int pitch, int velocity);
    
    /**
     * Add a note-off.  This will cause a note to appear, if and only
     * if there is a matching pending note-on.
     */
    void addNoteOff(sv_frame_t frame, int pitch);

    /**
     * Abandon all pending note-on events.
     */
    void abandonNoteOns();

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

    void setProperties(const QXmlAttributes &attributes);
    
    void setVerticalRangeToNoteRange(LayerGeometryProvider *v);

    /// VerticalScaleLayer methods
    virtual int getYForValue(LayerGeometryProvider *v, double value) const;
    virtual double getValueForY(LayerGeometryProvider *v, int y) const;
    virtual QString getScaleUnits() const;

signals:
    void reAnalyseRegion(sv_frame_t, sv_frame_t, float, float);
    void materialiseReAnalysis();
    
protected:
    void getScaleExtents(LayerGeometryProvider *, double &min, double &max, bool &log) const;
    bool shouldConvertMIDIToHz() const;

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

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

    bool getPointToDrag(LayerGeometryProvider *v, int x, int y, FlexiNoteModel::Point &) const;
    bool getNoteToEdit(LayerGeometryProvider *v, int x, int y, FlexiNoteModel::Point &) const;
    void getRelativeMousePosition(LayerGeometryProvider *v, FlexiNoteModel::Point &note, int x, int y, bool &closeToLeft, bool &closeToRight, bool &closeToTop, bool &closeToBottom) const;
    SparseTimeValueModel *getAssociatedPitchModel(LayerGeometryProvider *v) const;
    bool updateNoteValueFromPitchCurve(LayerGeometryProvider *v, FlexiNoteModel::Point &note) const;
    void splitNotesAt(LayerGeometryProvider *v, sv_frame_t frame, QMouseEvent *e);

    FlexiNoteModel *m_model;
    bool m_editing;
    bool m_intelligentActions;
    int m_dragPointX;
    int m_dragPointY;
    int m_dragStartX;
    int m_dragStartY;
    FlexiNoteModel::Point m_originalPoint;
    FlexiNoteModel::Point m_editingPoint;
    sv_frame_t m_greatestLeftNeighbourFrame;
    sv_frame_t m_smallestRightNeighbourFrame;
    FlexiNoteModel::EditCommand *m_editingCommand;
    VerticalScale m_verticalScale;
    EditMode m_editMode;

    typedef std::set<FlexiNoteModel::Point, FlexiNoteModel::Point::Comparator> FlexiNoteSet;
    FlexiNoteSet m_pendingNoteOns;

    mutable double m_scaleMinimum;
    mutable double m_scaleMaximum;

    bool shouldAutoAlign() const;

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

#endif