view base/PlayParameterRepository.h @ 1752:6d09d68165a4 by-id

Further review of ById: make IDs only available when adding a model to the ById store, not by querying the item directly. This means any id encountered in the wild must have been added to the store at some point (even if later released), which simplifies reasoning about lifecycles

/* -*- 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_PLAY_PARAMETER_REPOSITORY_H
#define SV_PLAY_PARAMETER_REPOSITORY_H

#include "PlayParameters.h"
#include "Command.h"

class Playable;

#include <map>
#include <memory>

#include <QObject>
#include <QString>

class PlayParameterRepository : public QObject
{
    Q_OBJECT

public:
    static PlayParameterRepository *getInstance();

    virtual ~PlayParameterRepository();

    /**
     * Register a playable. The id can be anything you like, so long
     * as it is unique among playables.
     */
    void addPlayable(int id, const Playable *);

    /**
     * Unregister a playable. This must happen before a playable is
     * deleted.
     */
    void removePlayable(int id);

    /**
     * Copy the play parameters from one playable to another.
     */
    void copyParameters(int fromId, int toId);

    /**
     * Retrieve the play parameters for a playable.
     */
    std::shared_ptr<PlayParameters> getPlayParameters(int id);

    void clear();

    class EditCommand : public Command
    {
    public:
        EditCommand(std::shared_ptr<PlayParameters> params);
        void setPlayMuted(bool);
        void setPlayAudible(bool);
        void setPlayPan(float);
        void setPlayGain(float);
        void setPlayClipId(QString);
        void execute() override;
        void unexecute() override;
        QString getName() const override;

    protected:
        std::shared_ptr<PlayParameters> m_params;
        PlayParameters m_from;
        PlayParameters m_to;
    };

signals:
    void playParametersChanged(int playableId);
    void playClipIdChanged(int playableId, QString);

protected slots:
    void playParametersChanged();
    void playClipIdChanged(QString);

protected:
    typedef std::map<int, std::shared_ptr<PlayParameters>> PlayableParameterMap;
    PlayableParameterMap m_playParameters;

    static PlayParameterRepository *m_instance;
};

#endif