view layer/FlexiNoteLayer.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 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 SV_FLEXINOTE_LAYER_H
#define SV_FLEXINOTE_LAYER_H

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

#include "data/model/NoteModel.h"

#include <QObject>
#include <QColor>

class View;
class QPainter;
class SparseTimeValueModel;

class FlexiNoteLayer : public SingleColourLayer,
                       public VerticalScaleLayer
{
    Q_OBJECT

public:
    FlexiNoteLayer();

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

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

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

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

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

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

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

    void splitStart(LayerGeometryProvider *v, QMouseEvent *) override;
    void splitEnd(LayerGeometryProvider *v, QMouseEvent *) override;
    
    void addNote(LayerGeometryProvider *v, QMouseEvent *e) override;

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

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

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

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

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

    ModelId getModel() const override { return m_model; }
    void setModel(ModelId model); // a NoteModel please

    PropertyList getProperties() const override;
    QString getPropertyLabel(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;
    void setProperty(const PropertyName &, int value) override;

    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; }

    bool isLayerScrollable(const LayerGeometryProvider *v) const override;

    bool isLayerEditable() const override { return true; }

    int getCompletion(LayerGeometryProvider *) const override;

    bool getValueExtents(double &min, double &max,
                         bool &log, 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;

    /**
     * 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();

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

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

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

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;

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

    EventVector getLocalPoints(LayerGeometryProvider *v, int) const;

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

    ModelId m_model;
    bool m_editing;
    bool m_intelligentActions;
    int m_dragPointX;
    int m_dragPointY;
    int m_dragStartX;
    int m_dragStartY;
    Event m_originalPoint;
    Event m_editingPoint;
    sv_frame_t m_greatestLeftNeighbourFrame;
    sv_frame_t m_smallestRightNeighbourFrame;
    ChangeEventsCommand *m_editingCommand;
    VerticalScale m_verticalScale;
    EditMode m_editMode;

    typedef std::set<Event> NoteSet;
    NoteSet m_pendingNoteOns;

    mutable double m_scaleMinimum;
    mutable double m_scaleMaximum;

    bool shouldAutoAlign() const;

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

#endif