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 * _fe ) override;
        void focusInEvent( QFocusEvent * fe ) override;
        void resizeEvent( QResizeEvent * _event ) 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;
 
        QScrollBar * m_pianoScroll;
        int m_startKey;                                 
        int m_lastKey;                                  
        IntModel *m_movedNoteModel;             
 
 
 
private slots:
        void pianoScrolled( int _new_pos );
 
signals:
        void keyPressed( int );
        void baseNoteChanged();
 
} ;
 
 
} // namespace gui
 
} // namespace lmms
 
#endif // LMMS_GUI_PIANO_VIEW_H