view base/Clipboard.h @ 492:23945cdd7161

* Update RDF query stuff again so as to set up a temporary datastore
  each time we want to query over an rdf file, instead of using rasqal
  against the file.  Seems the only way to avoid threading and storage
  management issues when trying to load from a single-source file and
  perform queries against our main datastore at the same time.  Maybe.

/* -*- 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 _CLIPBOARD_H_
#define _CLIPBOARD_H_

#include <QString>
#include <vector>

class Clipboard
{
public:
    class Point
    {
    public:
        Point(long frame, QString label);
        Point(long frame, float value, QString label);
        Point(long frame, float value, size_t duration, QString label);
        Point(long frame, float value, size_t duration, float level, QString label);
        Point(const Point &point);
        Point &operator=(const Point &point);

        bool haveFrame() const;
        long getFrame() const;

        bool haveValue() const;
        float getValue() const;
        
        bool haveDuration() const;
        size_t getDuration() const;
        
        bool haveLabel() const;
        QString getLabel() const;

        bool haveLevel() const;
        float getLevel() const;

        bool haveReferenceFrame() const;
        bool referenceFrameDiffers() const; // from point frame

        long getReferenceFrame() const;
        void setReferenceFrame(long);

    private:
        bool m_haveFrame;
        long m_frame;
        bool m_haveValue;
        float m_value;
        bool m_haveDuration;
        size_t m_duration;
        bool m_haveLabel;
        QString m_label;
        bool m_haveLevel;
        float m_level;
        bool m_haveReferenceFrame;
        long m_referenceFrame;
    };

    Clipboard();
    ~Clipboard();

    typedef std::vector<Point> PointList;

    void clear();
    bool empty() const;
    const PointList &getPoints() const;
    void setPoints(const PointList &points);
    void addPoint(const Point &point);

    bool haveReferenceFrames() const;
    bool referenceFramesDiffer() const;

protected:
    PointList m_points;
};

#endif