Piano.h

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/*
 * Piano.h - declaration of class Piano
 *
 * Copyright (c) 2004-2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
 *
 * This file is part of LMMS - https://lmms.io
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program (see COPYING); if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301 USA.
 *
 */
 
#ifndef LMMS_PIANO_H
#define LMMS_PIANO_H
 
#include <array>
 
#include "Model.h"
#include "Note.h"
 
namespace lmms
{
 
 
class InstrumentTrack;
class MidiEventProcessor;
 
class Piano final : public Model
{
public:
    enum class KeyType
    {
        White,
        Black
    } ;

    Piano(InstrumentTrack* track);

    void setKeyState(int key, bool state);
 
    bool isKeyPressed(int key) const
    {
        return m_pressedKeys[key];
    }

    void handleKeyPress(int key, int midiVelocity = -1);

    void handleKeyRelease(int key);
 
    InstrumentTrack* instrumentTrack() const
    {
        return m_instrumentTrack;
    }
 
    MidiEventProcessor* midiEventProcessor() const
    {
        return m_midiEvProc;
    }
 
    static bool isWhiteKey(int key);
    static bool isBlackKey(int key);
 
    static const unsigned int WhiteKeysPerOctave = 7;
    static const unsigned int BlackKeysPerOctave = 5;
    static const unsigned int NumWhiteKeys = 75;
    static const unsigned int NumBlackKeys = 53;
 
private:
    static bool isValidKey(int key)
    {
        return key >= 0 && key < NumKeys;
    }
 
    InstrumentTrack* m_instrumentTrack;
    MidiEventProcessor* m_midiEvProc;
    std::array<bool, NumKeys> m_pressedKeys = {};
 
} ;
 
 
} // namespace lmms
 
#endif // LMMS_PIANO_H