view data/model/AlignmentModel.h @ 1455:ec9e65fcf749

The use of the begin/end pairs here just seems to cause too many rows to be deleted (from the visual representation, not the underlying model). Things apparently work better if we just modify the underlying model and let the change signals percolate back up again. To that end, update the change handlers so as to cover their proper ranges with dataChanged signals.

/* -*- 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 2007 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 _ALIGNMENT_MODEL_H_
#define _ALIGNMENT_MODEL_H_

#include "Model.h"
#include "PathModel.h"
#include "base/RealTime.h"

#include <QString>
#include <QStringList>

class SparseTimeValueModel;

class AlignmentModel : public Model
{
    Q_OBJECT

public:
    AlignmentModel(Model *reference,
                   Model *aligned,
                   Model *inputModel, // probably an AggregateWaveModel; may be null; I take ownership
                   SparseTimeValueModel *path); // I take ownership
    ~AlignmentModel();

    virtual bool isOK() const;
    virtual sv_frame_t getStartFrame() const;
    virtual sv_frame_t getEndFrame() const;
    virtual sv_samplerate_t getSampleRate() const;
    virtual bool isReady(int *completion = 0) const;
    virtual const ZoomConstraint *getZoomConstraint() const;

    QString getTypeName() const { return tr("Alignment"); }

    const Model *getReferenceModel() const;
    const Model *getAlignedModel() const;

    sv_frame_t toReference(sv_frame_t frame) const;
    sv_frame_t fromReference(sv_frame_t frame) const;

    void setPathFrom(SparseTimeValueModel *rawpath);
    void setPath(PathModel *path);

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

signals:
    void modelChanged();
    void modelChangedWithin(sv_frame_t startFrame, sv_frame_t endFrame);
    void completionChanged();

protected slots:
    void pathChanged();
    void pathChangedWithin(sv_frame_t startFrame, sv_frame_t endFrame);
    void pathCompletionChanged();

protected:
    Model *m_reference; // I don't own this
    Model *m_aligned; // I don't own this

    Model *m_inputModel; // I own this

    SparseTimeValueModel *m_rawPath; // I own this
    mutable PathModel *m_path; // I own this
    mutable PathModel *m_reversePath; // I own this
    bool m_pathBegun;
    bool m_pathComplete;

    void constructPath() const;
    void constructReversePath() const;

    sv_frame_t align(PathModel *path, sv_frame_t frame) const;
};

#endif