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68c9d227d0
Moving empty destructors out of the .cpp files and into headers allows them to be devirtualized in certain cases. (When the compiler can't "see" a function in a header, it must largely assume it's some black box that the linker will resolve.) While we're at it, use C++11's `= default` to define empty virtual desturctors for us. For some classes (e.g., Piano), nothing is derived from it, so we can mark the class as final and remove any explicit virtual dtor. There are many other places where this can be done, but this is a large enough patch as-is.
90 lines
2.2 KiB
C++
90 lines
2.2 KiB
C++
/*
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* PianoView.h - declaration of PianoView, an interactive piano/keyboard-widget
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*
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* Copyright (c) 2004-2010 Tobias Doerffel <tobydox/at/users.sourceforge.net>
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*
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* This file is part of LMMS - https://lmms.io
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#ifndef PIANO_VIEW_H
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#define PIANO_VIEW_H
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#include <QPixmap>
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#include <QScrollBar>
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#include "ModelView.h"
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class Piano;
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class PianoView : public QWidget, public ModelView
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{
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Q_OBJECT
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public:
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PianoView( QWidget * _parent );
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virtual ~PianoView() = default;
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static int getKeyFromKeyEvent( QKeyEvent * _ke );
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public:
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virtual void keyPressEvent( QKeyEvent * ke );
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virtual void keyReleaseEvent( QKeyEvent * ke );
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protected:
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virtual void modelChanged();
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virtual void contextMenuEvent( QContextMenuEvent * _me );
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virtual void paintEvent( QPaintEvent * );
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virtual void mousePressEvent( QMouseEvent * me );
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virtual void mouseReleaseEvent( QMouseEvent * me );
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virtual void mouseMoveEvent( QMouseEvent * me );
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virtual void focusOutEvent( QFocusEvent * _fe );
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virtual void resizeEvent( QResizeEvent * _event );
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private:
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int getKeyFromMouse( const QPoint & _p ) const;
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int getKeyX( int _key_num ) const;
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static QPixmap * s_whiteKeyPm;
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static QPixmap * s_blackKeyPm;
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static QPixmap * s_whiteKeyPressedPm;
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static QPixmap * s_blackKeyPressedPm;
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Piano * m_piano;
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QScrollBar * m_pianoScroll;
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int m_startKey; // first key when drawing
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int m_lastKey;
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private slots:
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void pianoScrolled( int _new_pos );
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signals:
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void keyPressed( int );
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void baseNoteChanged();
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} ;
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#endif
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