void Fader::paintLinearLevels(QPaintEvent * ev, QPainter & painter)
{
// peak leds
//float fRange = abs( m_fMaxPeak ) + abs( m_fMinPeak );
int height = m_back->height();
int width = m_back->width() / 2;
int center = m_back->width() - width;
int peak_L = calculateDisplayPeak( m_fPeakValue_L - m_fMinPeak );
int persistentPeak_L = qMax<int>( 3, calculateDisplayPeak( m_persistentPeak_L - m_fMinPeak ) );
painter.drawPixmap( QRect( 0, peak_L, width, height - peak_L ), *m_leds, QRect( 0, peak_L, width, height - peak_L ) );
if( m_persistentPeak_L > 0.05 )
{
painter.fillRect( QRect( 2, persistentPeak_L, 7, 1 ), ( m_persistentPeak_L < 1.0 )
? peakGreen()
: peakRed() );
}
int peak_R = calculateDisplayPeak( m_fPeakValue_R - m_fMinPeak );
int persistentPeak_R = qMax<int>( 3, calculateDisplayPeak( m_persistentPeak_R - m_fMinPeak ) );
painter.drawPixmap( QRect( center, peak_R, width, height - peak_R ), *m_leds, QRect( center, peak_R, width, height - peak_R ) );
if( m_persistentPeak_R > 0.05 )
{
painter.fillRect( QRect( 14, persistentPeak_R, 7, 1 ), ( m_persistentPeak_R < 1.0 )
? peakGreen()
: peakRed() );
}
}
void Fader::paintDBFSLevels(QPaintEvent * ev, QPainter & painter)
{
int height = m_back->height();
int width = m_back->width() / 2;
int center = m_back->width() - width;
float const maxDB(ampToDbfs(m_fMaxPeak));
float const minDB(ampToDbfs(m_fMinPeak));
// We will need to divide by the span between min and max several times. It's more
// efficient to calculate the reciprocal once and then to multiply.
float const fullSpanReciprocal = 1 / (maxDB - minDB);
// Draw left levels
float const leftSpan = ampToDbfs(qMax<float>(0.0001, m_fPeakValue_L)) - minDB;
int peak_L = height * leftSpan * fullSpanReciprocal;
QRect drawRectL( 0, height - peak_L, width, peak_L ); // Source and target are identical
painter.drawPixmap( drawRectL, *m_leds, drawRectL );
float const persistentLeftPeakDBFS = ampToDbfs(qMax<float>(0.0001, m_persistentPeak_L));
int persistentPeak_L = height * (1 - (persistentLeftPeakDBFS - minDB) * fullSpanReciprocal);
// the LED's have a 4px padding and we don't want the peaks
// to draw on the fader background
if( persistentPeak_L <= 4 )
{
persistentPeak_L = 4;
}
if( persistentLeftPeakDBFS > minDB )
{
QColor const & peakColor = clips(m_persistentPeak_L) ? peakRed() :
persistentLeftPeakDBFS >= -6 ? peakYellow() : peakGreen();
painter.fillRect( QRect( 2, persistentPeak_L, 7, 1 ), peakColor );
}
// Draw right levels
float const rightSpan = ampToDbfs(qMax<float>(0.0001, m_fPeakValue_R)) - minDB;
int peak_R = height * rightSpan * fullSpanReciprocal;
QRect const drawRectR( center, height - peak_R, width, peak_R ); // Source and target are identical
painter.drawPixmap( drawRectR, *m_leds, drawRectR );
float const persistentRightPeakDBFS = ampToDbfs(qMax<float>(0.0001, m_persistentPeak_R));
int persistentPeak_R = height * (1 - (persistentRightPeakDBFS - minDB) * fullSpanReciprocal);
// the LED's have a 4px padding and we don't want the peaks
// to draw on the fader background
if( persistentPeak_R <= 4 )
{
persistentPeak_R = 4;
}
if( persistentRightPeakDBFS > minDB )
{
QColor const & peakColor = clips(m_persistentPeak_R) ? peakRed() :
persistentRightPeakDBFS >= -6 ? peakYellow() : peakGreen();
painter.fillRect( QRect( 14, persistentPeak_R, 7, 1 ), peakColor );
}
}
void fader::paintEvent( QPaintEvent * ev)
{
QPainter painter(this);
// background
painter.drawPixmap( ev->rect(), *s_back, ev->rect() );
// peak leds
//float fRange = abs( m_fMaxPeak ) + abs( m_fMinPeak );
int peak_L = calculateDisplayPeak( m_fPeakValue_L - m_fMinPeak );
int persistentPeak_L = qMax<int>( 3, calculateDisplayPeak( m_persistentPeak_L - m_fMinPeak ) );
painter.drawPixmap( QRect( 0, peak_L, 11, 116 - peak_L ), *s_leds, QRect( 0, peak_L, 11, 116 - peak_L ) );
if( m_persistentPeak_L > 0.05 )
{
painter.fillRect( QRect( 2, persistentPeak_L, 7, 1 ), ( m_persistentPeak_L < 1.0 )
? peakGreen()
: peakRed() );
}
int peak_R = calculateDisplayPeak( m_fPeakValue_R - m_fMinPeak );
int persistentPeak_R = qMax<int>( 3, calculateDisplayPeak( m_persistentPeak_R - m_fMinPeak ) );
painter.drawPixmap( QRect( 11, peak_R, 11, 116 - peak_R ), *s_leds, QRect( 11, peak_R, 11, 116 - peak_R ) );
if( m_persistentPeak_R > 0.05 )
{
painter.fillRect( QRect( 14, persistentPeak_R, 7, 1 ), ( m_persistentPeak_R < 1.0 )
? peakGreen()
: peakRed() );
}
// knob
painter.drawPixmap( 0, knobPosY() - ( *s_knob ).height(), *s_knob );
}