Fix meter resize causing unwanted green/blue bars to be seen

src/digitalpeakmeter.py

@@ -52,6 +52,35 @@ class DigitalPeakMeter(QWidget):
     def sizeHint(self):
         return QSize(self.m_width, self.m_height)
 
+    def checkSizes(self):
+        self.m_width = self.width()
+        self.m_height = self.height()
+        self.m_sizeMeter = 0
+
+        if (self.m_orientation == self.HORIZONTAL):
+          self.m_gradientMeter.setFinalStop(self.m_width, 0)
+          if (self.m_channels > 0):
+            self.m_sizeMeter = self.m_height/self.m_channels
+
+        elif (self.m_orientation == self.VERTICAL):
+          self.m_gradientMeter.setFinalStop(0, self.m_height)
+          if (self.m_channels > 0):
+            self.m_sizeMeter = self.m_width/self.m_channels
+
+        self.update()
+
+    def displayMeter(self, meter_n, level):
+        if (meter_n < 0 or meter_n > self.m_channels):
+          qCritical("DigitalPeakMeter::displayMeter(%i, %f) - Invalid meter number", meter_n, level)
+          return
+
+        if (level < 0.0):
+          level = -level
+        if (level > 1.0):
+          level = 1.0
+
+        self.m_channels_data[meter_n-1] = level
+
     def setChannels(self, channels):
         self.m_channels = channels
         self.m_channels_data = []
@@ -106,33 +135,6 @@ class DigitalPeakMeter(QWidget):
           value = 5
         self.m_smoothMultiplier = value
 
-    def displayMeter(self, meter_n, level):
-        if (meter_n < 0 or meter_n > self.m_channels):
-          qCritical("DigitalPeakMeter::displayMeter(%i, %f) - Invalid meter number", meter_n, level)
-          return
-
-        if (level < 0.0):
-          level = -level
-        if (level > 1.0):
-          level = 1.0
-
-        self.m_channels_data[meter_n-1] = level
-
-    def checkSizes(self):
-        self.m_width = self.width()
-        self.m_height = self.height()
-        self.m_sizeMeter = 0
-
-        if (self.m_orientation == self.HORIZONTAL):
-          self.m_gradientMeter.setFinalStop(self.m_width, 0)
-          if (self.m_channels > 0):
-            self.m_sizeMeter = self.m_height/self.m_channels
-
-        elif (self.m_orientation == self.VERTICAL):
-          self.m_gradientMeter.setFinalStop(0, self.m_height)
-          if (self.m_channels > 0):
-            self.m_sizeMeter = self.m_width/self.m_channels
-
     def paintEvent(self, event):
         painter = QPainter(self)
 
@@ -222,5 +224,5 @@ class DigitalPeakMeter(QWidget):
           painter.drawLine(1, lsmall-(lsmall/1.04), lfull, lsmall-(lsmall/1.04))
 
     def resizeEvent(self, event):
-        QTimer.singleShot(0, self.checkSizes)
+        self.checkSizes()
         QWidget.resizeEvent(self, event)

src/jackmeter.py

@@ -83,8 +83,8 @@ class MeterW(DigitalPeakMeter):
         self.setOrientation(self.VERTICAL)
         self.setSmoothRelease(1)
 
-        self.displayMeter(1, x_port1)
-        self.displayMeter(2, x_port2)
+        self.displayMeter(1, 0.0)
+        self.displayMeter(2, 0.0)
 
         self.setRefreshRate(25)
         self.m_peakTimerId = self.startTimer(50)