view data/model/SparseOneDimensionalModel.h @ 1376:d9511f9e04d7 dev/refactor-piper-related

Introduce some POD structs for describing an external server application and the desired libraries to load from it, and disambiguating between empty list request and invalid list request. This allows for overriding PiperVampPluginFactory behaviour for using a PluginScan to populate the list request.

/* -*- 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 _SPARSE_ONE_DIMENSIONAL_MODEL_H_
#define _SPARSE_ONE_DIMENSIONAL_MODEL_H_

#include "SparseModel.h"
#include "NoteData.h"
#include "base/PlayParameterRepository.h"
#include "base/RealTime.h"

#include <QStringList>

struct OneDimensionalPoint
{
public:
    OneDimensionalPoint(sv_frame_t _frame) : frame(_frame) { }
    OneDimensionalPoint(sv_frame_t _frame, QString _label) : frame(_frame), label(_label) { }

    int getDimensions() const { return 1; }
    
    sv_frame_t frame;
    QString label;

    QString getLabel() const { return label; }

    void toXml(QTextStream &stream,
               QString indent = "",
               QString extraAttributes = "") const
    {
        stream << QString("%1<point frame=\"%2\" label=\"%3\" %4/>\n")
	    .arg(indent).arg(frame).arg(XmlExportable::encodeEntities(label))
            .arg(extraAttributes);
    }

    QString toDelimitedDataString(QString delimiter, DataExportOptions, sv_samplerate_t sampleRate) const
    {
        QStringList list;
        list << RealTime::frame2RealTime(frame, sampleRate).toString().c_str();
        if (label != "") list << label;
        return list.join(delimiter);
    }

    struct Comparator {
	bool operator()(const OneDimensionalPoint &p1,
			const OneDimensionalPoint &p2) const {
	    if (p1.frame != p2.frame) return p1.frame < p2.frame;
	    return p1.label < p2.label;
	}
    };
    
    struct OrderComparator {
	bool operator()(const OneDimensionalPoint &p1,
			const OneDimensionalPoint &p2) const {
	    return p1.frame < p2.frame;
	}
    };
};


class SparseOneDimensionalModel : public SparseModel<OneDimensionalPoint>,
                                  public NoteExportable
{
    Q_OBJECT
    
public:
    SparseOneDimensionalModel(sv_samplerate_t sampleRate, int resolution,
			      bool notifyOnAdd = true) :
	SparseModel<OneDimensionalPoint>(sampleRate, resolution, notifyOnAdd)
    {
	PlayParameterRepository::getInstance()->addPlayable(this);
    }

    virtual ~SparseOneDimensionalModel()
    {
        PlayParameterRepository::getInstance()->removePlayable(this);
    }

    virtual bool canPlay() const { return true; }

    virtual QString getDefaultPlayClipId() const
    {
        return "tap";
    }

    int getIndexOf(const Point &point)
    {
	// slow
	int i = 0;
	Point::Comparator comparator;
	for (PointList::const_iterator j = m_points.begin();
	     j != m_points.end(); ++j, ++i) {
	    if (!comparator(*j, point) && !comparator(point, *j)) return i;
	}
	return -1;
    }

    QString getTypeName() const { return tr("Sparse 1-D"); }

    /**
     * TabularModel methods.  
     */
    
    virtual int getColumnCount() const
    {
        return 3;
    }

    virtual QString getHeading(int column) const
    {
        switch (column) {
        case 0: return tr("Time");
        case 1: return tr("Frame");
        case 2: return tr("Label");
        default: return tr("Unknown");
        }
    }

    virtual QVariant getData(int row, int column, int role) const
    {
        if (column < 2) {
            return SparseModel<OneDimensionalPoint>::getData
                (row, column, role);
        }

        PointListConstIterator i = getPointListIteratorForRow(row);
        if (i == m_points.end()) return QVariant();

        switch (column) {
        case 2: return i->label;
        default: return QVariant();
        }
    }

    virtual Command *getSetDataCommand(int row, int column, const QVariant &value, int role)
    {
        if (column < 2) {
            return SparseModel<OneDimensionalPoint>::getSetDataCommand
                (row, column, value, role);
        }

        if (role != Qt::EditRole) return 0;
        PointListConstIterator i = getPointListIteratorForRow(row);
        if (i == m_points.end()) return 0;
        EditCommand *command = new EditCommand(this, tr("Edit Data"));

        Point point(*i);
        command->deletePoint(point);

        switch (column) {
        case 2: point.label = value.toString(); break;
        }

        command->addPoint(point);
        return command->finish();
    }


    virtual bool isColumnTimeValue(int column) const
    {
        return (column < 2); 
    }

    virtual SortType getSortType(int column) const
    {
        if (column == 2) return SortAlphabetical;
        return SortNumeric;
    }

    /**
     * NoteExportable methods.
     */

    NoteList getNotes() const {
        return getNotesWithin(getStartFrame(), getEndFrame());
    }

    NoteList getNotesWithin(sv_frame_t startFrame, sv_frame_t endFrame) const {
        
	PointList points = getPoints(startFrame, endFrame);
        NoteList notes;

	for (PointList::iterator pli =
		 points.begin(); pli != points.end(); ++pli) {

            notes.push_back
                (NoteData(pli->frame,
                          sv_frame_t(getSampleRate() / 6), // arbitrary short duration
                          64,   // default pitch
                          100)); // default velocity
        }

        return notes;
    }
};

#endif