PianoView.h

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/*
 * PianoView.h - declaration of PianoView, an interactive piano/keyboard-widget
 *
 * Copyright (c) 2004-2010 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_GUI_PIANO_VIEW_H
#define LMMS_GUI_PIANO_VIEW_H
 
#include <QPixmap>
#include <QScrollBar>
 
#include "AutomatableModel.h"
#include "ModelView.h"
#include "embed.h"
 
namespace lmms
{
 
class Piano;
 
namespace gui
{
 
class PianoView : public QWidget, public ModelView
{
    Q_OBJECT
public:
    PianoView(QWidget* parent);
    ~PianoView() override = default;

    static int getKeyFromKeyEvent( QKeyEvent * _ke );
 
 
public:
    void keyPressEvent(QKeyEvent* ke) override;

    void keyReleaseEvent(QKeyEvent* ke) override;
 
 
protected:

    void modelChanged() override;

    void contextMenuEvent(QContextMenuEvent* me) override;

    void paintEvent(QPaintEvent*) override;

    void mousePressEvent(QMouseEvent* me) override;

    void mouseReleaseEvent(QMouseEvent* me) override;

    void mouseMoveEvent(QMouseEvent* me) override;

    void focusOutEvent(QFocusEvent*) override;
 
    void focusInEvent( QFocusEvent * fe ) override;

    void resizeEvent(QResizeEvent*) override;
 
 
private:
    int getKeyFromMouse(const QPoint& p) const;

    int getKeyX(int key_num) const;

    int getKeyWidth(int key_num) const;

    int getKeyHeight(int key_num) const;

    IntModel *getNearestMarker(int key, QString* title = nullptr);
 
    QPixmap m_whiteKeyPm = embed::getIconPixmap("white_key");
    QPixmap m_blackKeyPm = embed::getIconPixmap("black_key");
    QPixmap m_whiteKeyPressedPm = embed::getIconPixmap("white_key_pressed");
    QPixmap m_blackKeyPressedPm = embed::getIconPixmap("black_key_pressed");
    QPixmap m_whiteKeyDisabledPm = embed::getIconPixmap("white_key_disabled");
    QPixmap m_blackKeyDisabledPm = embed::getIconPixmap("black_key_disabled");
 
    Piano* m_piano = nullptr;
 
    QScrollBar * m_pianoScroll;
    int m_startKey; 
    int m_lastKey = -1; 
    IntModel* m_movedNoteModel = nullptr; 
 
private slots:
    void pianoScrolled(int newPos);
 
signals:
    void keyPressed( int );
    void baseNoteChanged();
};
 
 
} // namespace gui
 
} // namespace lmms
 
#endif // LMMS_GUI_PIANO_VIEW_H