Fix QSS() implementation & try to avoid crash on a crappy laptop running OpenSUSE

app/src/Misc/ThemeManager.h

@@ -61,8 +61,14 @@
 template<typename... Colors>
 inline QString QSS(const QString &style, const Colors &...colors)
 {
-  QStringList colorNames = {colors.name()...};
+  QStringList colorNames;
-  return QString(style).arg(colorNames.join(','));
+  (colorNames << ... << colors.name());
+  QString result = style;
+  for (int i = 0; i < colorNames.size(); ++i)
+  {
+    result = result.arg(colorNames[i]);
+  }
+  return result;
 }
 
 /**

app/src/UI/DeclarativeWidget.cpp

@@ -216,6 +216,7 @@ void UI::DeclarativeWidget::setWidget(QWidget *widget)
       delete m_widget;
 
     m_widget = widget;
+    m_widget->setAttribute(Qt::WA_UpdatesDisabled, true);
     Q_EMIT widgetChanged();
   }
 }
@@ -228,6 +229,7 @@ void UI::DeclarativeWidget::renderWidget()
 {
   if (widget() && isVisible())
   {
+    widget()->update();
     m_pixmap = widget()->grab();
     update();
   }

app/src/UI/Widgets/FFTPlot.cpp

@@ -133,10 +133,13 @@ void Widgets::FFTPlot::updateData()
       points[i] = QPointF(frequency, dB);
     }
 
-    // Plot obtained data
+    // Update curve with new data
     m_curve.setSamples(points);
     m_plot.setAxisScale(QwtPlot::xBottom, 0, m_samplingRate / 2);
-    m_plot.replot();
+
+    // Replot graph
+    if (isEnabled())
+      m_plot.replot();
   }
 }
 

app/src/UI/Widgets/Plot.cpp

@@ -167,9 +167,12 @@ void Widgets::Plot::updateData()
       }
     }
 
-    // Replot graph
+    // Add new data to curve
     m_curve.setSamples(plotData.at(m_index));
-    m_plot.replot();
+
+    // Replot graph
+    if (isEnabled())
+      m_plot.replot();
   }
 }