mirror of
https://github.com/LMMS/lmms.git
synced 2026-03-03 21:56:45 -05:00
2f7a6558a1
Co-authored-by: allejok96 <allejok96@gmail.com> Co-authored-by: Dominic Clark <mrdomclark@gmail.com>
140 lines
3.3 KiB
C++
140 lines
3.3 KiB
C++
/*
|
|
* Piano.cpp - implementation of piano-widget used in instrument-track-window
|
|
* for testing + according model class
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
/** \file Piano.cpp
|
|
* \brief A piano keyboard to play notes on in the instrument plugin window.
|
|
*/
|
|
|
|
/*
|
|
* \mainpage Instrument plugin keyboard display classes
|
|
*
|
|
* \section introduction Introduction
|
|
*
|
|
* \todo fill this out
|
|
* \todo write isWhite inline function and replace throughout
|
|
*/
|
|
|
|
#include "Piano.h"
|
|
|
|
#include "InstrumentTrack.h"
|
|
|
|
|
|
namespace lmms
|
|
{
|
|
|
|
|
|
/*! The black / white order of keys as they appear on the keyboard.
|
|
*/
|
|
static const Piano::KeyTypes KEY_ORDER[] =
|
|
{
|
|
// C CIS D DIS
|
|
Piano::WhiteKey, Piano::BlackKey, Piano::WhiteKey, Piano::BlackKey,
|
|
// E F FIS G
|
|
Piano::WhiteKey, Piano::WhiteKey, Piano::BlackKey, Piano::WhiteKey,
|
|
// GIS A AIS B
|
|
Piano::BlackKey, Piano::WhiteKey, Piano::BlackKey, Piano::WhiteKey
|
|
} ;
|
|
|
|
|
|
/*! \brief Create a new keyboard display
|
|
*
|
|
* \param _it the InstrumentTrack window to attach to
|
|
*/
|
|
Piano::Piano( InstrumentTrack* track ) :
|
|
Model( nullptr ), /*!< base class ctor */
|
|
m_instrumentTrack( track ),
|
|
m_midiEvProc( track ) /*!< the InstrumentTrack Model */
|
|
{
|
|
}
|
|
|
|
/*! \brief Turn a key on or off
|
|
*
|
|
* \param key the key number to change
|
|
* \param state the state to set the key to
|
|
*/
|
|
void Piano::setKeyState( int key, bool state )
|
|
{
|
|
if( isValidKey( key ) )
|
|
{
|
|
m_pressedKeys[key] = state;
|
|
|
|
emit dataChanged();
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
/*! \brief Handle a note being pressed on our keyboard display
|
|
*
|
|
* \param key the key being pressed
|
|
*/
|
|
void Piano::handleKeyPress( int key, int midiVelocity )
|
|
{
|
|
if( midiVelocity == -1 )
|
|
{
|
|
midiVelocity = m_instrumentTrack->midiPort()->baseVelocity();
|
|
}
|
|
if( isValidKey( key ) )
|
|
{
|
|
m_midiEvProc->processInEvent( MidiEvent( MidiNoteOn, -1, key, midiVelocity ) );
|
|
m_pressedKeys[key] = true;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*! \brief Handle a note being released on our keyboard display
|
|
*
|
|
* \param key the key being releassed
|
|
*/
|
|
void Piano::handleKeyRelease( int key )
|
|
{
|
|
if( isValidKey( key ) )
|
|
{
|
|
m_midiEvProc->processInEvent( MidiEvent( MidiNoteOff, -1, key, 0 ) );
|
|
m_pressedKeys[key] = false;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
bool Piano::isBlackKey( int key )
|
|
{
|
|
int keyCode = key % KeysPerOctave;
|
|
|
|
return KEY_ORDER[keyCode] == Piano::BlackKey;
|
|
}
|
|
|
|
|
|
bool Piano::isWhiteKey( int key )
|
|
{
|
|
return !isBlackKey( key );
|
|
}
|
|
|
|
|
|
} // namespace lmms
|