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Enable different colors for oscilloscope channels (#7155)

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Enable to set different colors for the oscilloscope channels:
* Left channel color
* Right channel color
* Color of all other channels

The clipping color is now used per channel, i.e. if the left channel clips but the right does not then only the signal of the left channel is painted in the clipping color.

Enable setting the colors in the style sheets and adjust the style sheets of the default and classic theme accordingly.
This commit is contained in:
Michael Gregorius
2024-03-26 20:19:52 +01:00
committed by GitHub
parent 45fd326787
commit a41da81554
4 changed files with 58 additions and 26 deletions
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56
src/gui/widgets/Oscilloscope.cpp
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@@ -45,7 +45,9 @@ Oscilloscope::Oscilloscope( QWidget * _p ) :
m_background( embed::getIconPixmap( "output_graph" ) ),
m_points( new QPointF[Engine::audioEngine()->framesPerPeriod()] ),
m_active( false ),
m_normalColor(71, 253, 133),
m_leftChannelColor(71, 253, 133),
m_rightChannelColor(71, 253, 133),
m_otherChannelsColor(71, 253, 133),
m_clippingColor(255, 64, 64)
{
setFixedSize( m_background.width(), m_background.height() );
@@ -112,14 +114,34 @@ void Oscilloscope::setActive( bool _active )
}
QColor const & Oscilloscope::normalColor() const
QColor const & Oscilloscope::leftChannelColor() const
{
return m_normalColor;
return m_leftChannelColor;
}
void Oscilloscope::setNormalColor(QColor const & normalColor)
void Oscilloscope::setLeftChannelColor(QColor const & leftChannelColor)
{
m_normalColor = normalColor;
m_leftChannelColor = leftChannelColor;
}
QColor const & Oscilloscope::rightChannelColor() const
{
return m_rightChannelColor;
}
void Oscilloscope::setRightChannelColor(QColor const & rightChannelColor)
{
m_rightChannelColor = rightChannelColor;
}
QColor const & Oscilloscope::otherChannelsColor() const
{
return m_otherChannelsColor;
}
void Oscilloscope::setOtherChannelsColor(QColor const & otherChannelsColor)
{
m_otherChannelsColor = otherChannelsColor;
}
QColor const & Oscilloscope::clippingColor() const
@@ -147,11 +169,9 @@ void Oscilloscope::paintEvent( QPaintEvent * )
const fpp_t frames = audioEngine->framesPerPeriod();
AudioEngine::StereoSample peakValues = audioEngine->getPeakValues(m_buffer, frames);
const float max_level = qMax<float>( peakValues.left, peakValues.right );
// Set the color of the line according to the maximum level
float const maxLevelWithAppliedMasterGain = max_level * masterOutput;
p.setPen(QPen(determineLineColor(maxLevelWithAppliedMasterGain), 0.7));
auto const leftChannelClips = clips(peakValues.left * masterOutput);
auto const rightChannelClips = clips(peakValues.right * masterOutput);
p.setRenderHint( QPainter::Antialiasing );
@@ -162,8 +182,14 @@ void Oscilloscope::paintEvent( QPaintEvent * )
int x_base = 2;
const qreal y_base = height() / 2 - 0.5;
qreal const width = 0.7;
for( ch_cnt_t ch = 0; ch < DEFAULT_CHANNELS; ++ch )
{
QColor color = ch == 0 ? (leftChannelClips ? clippingColor() : leftChannelColor()) : // Check left channel
ch == 1 ? (rightChannelClips ? clippingColor() : rightChannelColor()) : // Check right channel
otherChannelsColor(); // Any other channel
p.setPen(QPen(color, width));
for( int frame = 0; frame < frames; ++frame )
{
sample_t const clippedSample = AudioEngine::clip(m_buffer[frame][ch]);
@@ -193,17 +219,9 @@ void Oscilloscope::mousePressEvent( QMouseEvent * _me )
}
}
QColor const & Oscilloscope::determineLineColor(float level) const
bool Oscilloscope::clips(float level) const
{
if( level <= 1.0f )
{
return normalColor();
}
else
{
return clippingColor();
}
return level > 1.0f;
}