C++ Note::getVolume方法代码示例

void PatternView::wheelEvent( QWheelEvent * _we )
{
	if( m_pat->m_patternType == Pattern::BeatPattern &&
				( fixedTCOs() || pixelsPerTact() >= 96 ||
				m_pat->m_steps != MidiTime::stepsPerTact() ) &&
				_we->y() > height() - s_stepBtnOff->height() )
	{
//	get the step number that was wheeled on and
//	do calculations in floats to prevent rounding errors...
		float tmp = ( ( float(_we->x()) - TCO_BORDER_WIDTH ) *
				float( m_pat -> m_steps ) ) / float(width() - TCO_BORDER_WIDTH*2);

		int step = int( tmp );

		if( step >= m_pat->m_steps )
		{
			return;
		}

		int vol = 0;
		int len = 0;

		Note * n = m_pat->noteAtStep( step );
		if( n != NULL )
		{
			vol = n->getVolume();
			len = n->length();

			if( len == 0 && _we->delta() > 0 )
			{
				n->setLength( -DefaultTicksPerTact );
				n->setVolume( 5 );
			}
			else if( _we->delta() > 0 )
			{
				n->setVolume( qMin( 100, vol + 5 ) );
			}
			else
			{
				n->setVolume( qMax( 0, vol - 5 ) );
			}

			Engine::getSong()->setModified();
			update();
			if( gui->pianoRoll()->currentPattern() == m_pat )
			{
				gui->pianoRoll()->update();
			}
		}
		_we->accept();
	}
	else
	{
		TrackContentObjectView::wheelEvent( _we );
	}
}

void Pattern::cloneSteps()
{
	int oldLength = m_steps;
	m_steps += MidiTime::stepsPerTact();
	ensureBeatNotes();
	for(int i = 0; i < MidiTime::stepsPerTact(); ++i )
	{
		Note *toCopy = noteAtStep( i );
		if( toCopy )
		{
			setStep( oldLength + i, true );
			Note *newNote = noteAtStep( oldLength + i );
			newNote->setKey( toCopy->key() );
			newNote->setLength( toCopy->length() );
			newNote->setPanning( toCopy->getPanning() );
			newNote->setVolume( toCopy->getVolume() );
		}
	}
	ensureBeatNotes();
	emit dataChanged();
	updateBBTrack();
}

//.........这里部分代码省略.........
				}
			}
		}
	}

// beat pattern paint event

	else if( m_pat->m_patternType == Pattern::BeatPattern &&
		( fixedTCOs() || ppt >= 96
			|| m_pat->m_steps != MidiTime::stepsPerTact() ) )
	{
		QPixmap stepon;
		QPixmap stepoverlay;
		QPixmap stepoff;
		QPixmap stepoffl;
		const int steps = qMax( 1,
					m_pat->m_steps );
		const int w = width() - 2 * TCO_BORDER_WIDTH;

		// scale step graphics to fit the beat pattern length
		stepon = s_stepBtnOn->scaled( w / steps,
					      s_stepBtnOn->height(),
					      Qt::IgnoreAspectRatio,
					      Qt::SmoothTransformation );
		stepoverlay = s_stepBtnOverlay->scaled( w / steps,
					      s_stepBtnOn->height(),
					      Qt::IgnoreAspectRatio,
					      Qt::SmoothTransformation );
		stepoff = s_stepBtnOff->scaled( w / steps,
						s_stepBtnOff->height(),
						Qt::IgnoreAspectRatio,
						Qt::SmoothTransformation );
		stepoffl = s_stepBtnOffLight->scaled( w / steps,
						s_stepBtnOffLight->height(),
						Qt::IgnoreAspectRatio,
						Qt::SmoothTransformation );

		for( int it = 0; it < steps; it++ )	// go through all the steps in the beat pattern
		{
			Note * n = m_pat->noteAtStep( it );

			// figure out x and y coordinates for step graphic
			const int x = TCO_BORDER_WIDTH + static_cast<int>( it * w / steps );
			const int y = height() - s_stepBtnOff->height() - 1;

			// get volume and length of note, if noteAtStep returned null
			// (meaning, note at step doesn't exist for some reason)
			// then set both at zero, ie. treat as an off step
			const int vol = ( n != NULL ? n->getVolume() : 0 );
			const int len = ( n != NULL ? int( n->length() ) : 0 );

			if( len < 0 )
			{
				p.drawPixmap( x, y, stepoff );
				for( int i = 0; i < vol / 5 + 1; ++i )
				{
					p.drawPixmap( x, y, stepon );
				}
				for( int i = 0; i < ( 25 + ( vol - 75 ) ) / 5;
									++i )
				{
					p.drawPixmap( x, y, stepoverlay );
				}
			}
			else if( ( it / 4 ) % 2 )
			{
				p.drawPixmap( x, y, stepoffl );
			}
			else
			{
				p.drawPixmap( x, y, stepoff );
			}
		} // end for loop
	}

	p.setFont( pointSize<8>( p.font() ) );

	QColor text_color = ( m_pat->isMuted() || m_pat->getTrack()->isMuted() )
		? QColor( 30, 30, 30 )
		: textColor();

	if( m_pat->name() != m_pat->instrumentTrack()->name() )
	{
		p.setPen( QColor( 0, 0, 0 ) );
		p.drawText( 4, p.fontMetrics().height()+1, m_pat->name() );
		p.setPen( text_color );
		p.drawText( 3, p.fontMetrics().height(), m_pat->name() );
	}

	if( m_pat->isMuted() )
	{
		p.drawPixmap( 3, p.fontMetrics().height() + 1,
				embed::getIconPixmap( "muted", 16, 16 ) );
	}

	p.end();

	_p.drawPixmap( 0, 0, m_paintPixmap );

}

NotePlayHandle::NotePlayHandle( InstrumentTrack* instrumentTrack,
								const f_cnt_t _offset,
								const f_cnt_t _frames,
								const Note& n,
								NotePlayHandle *parent,
								int midiEventChannel,
								Origin origin ) :
	PlayHandle( TypeNotePlayHandle, _offset ),
	Note( n.length(), n.pos(), n.key(), n.getVolume(), n.getPanning(), n.detuning() ),
	m_pluginData( NULL ),
	m_filter( NULL ),
	m_instrumentTrack( instrumentTrack ),
	m_frames( 0 ),
	m_totalFramesPlayed( 0 ),
	m_framesBeforeRelease( 0 ),
	m_releaseFramesToDo( 0 ),
	m_releaseFramesDone( 0 ),
	m_subNotes(),
	m_released( false ),
	m_hasParent( parent != NULL  ),
	m_parent( parent ),
	m_hadChildren( false ),
	m_muted( false ),
	m_bbTrack( NULL ),
	m_origTempo( Engine::getSong()->getTempo() ),
	m_origBaseNote( instrumentTrack->baseNote() ),
	m_frequency( 0 ),
	m_unpitchedFrequency( 0 ),
	m_baseDetuning( NULL ),
	m_songGlobalParentOffset( 0 ),
	m_midiChannel( midiEventChannel >= 0 ? midiEventChannel : instrumentTrack->midiPort()->realOutputChannel() ),
	m_origin( origin ),
	m_frequencyNeedsUpdate( false )
{
	lock();
	if( hasParent() == false )
	{
		m_baseDetuning = new BaseDetuning( detuning() );
		m_instrumentTrack->m_processHandles.push_back( this );
	}
	else
	{
		m_baseDetuning = parent->m_baseDetuning;

		parent->m_subNotes.push_back( this );
		parent->m_hadChildren = true;

		m_bbTrack = parent->m_bbTrack;

		parent->setUsesBuffer( false );
	}

	updateFrequency();

	setFrames( _frames );

	// inform attached components about new MIDI note (used for recording in Piano Roll)
	if( m_origin == OriginMidiInput )
	{
		m_instrumentTrack->midiNoteOn( *this );
	}

	if( hasParent() || ! m_instrumentTrack->isArpeggioEnabled() )
	{
		const int baseVelocity = m_instrumentTrack->midiPort()->baseVelocity();

		// send MidiNoteOn event
		m_instrumentTrack->processOutEvent(
			MidiEvent( MidiNoteOn, midiChannel(), midiKey(), midiVelocity( baseVelocity ) ),
			MidiTime::fromFrames( offset(), Engine::framesPerTick() ),
			offset() );
	}

	if( m_instrumentTrack->instrument()->flags() & Instrument::IsSingleStreamed )
	{
		setUsesBuffer( false );
	}

	setAudioPort( instrumentTrack->audioPort() );

	unlock();
}