FST4 GUI controls for FLow, FHigh, should disappear when Single Decode is checked. And some related improvements.

widgets/plotter.cpp

@@ -163,7 +163,6 @@ void CPlotter::draw(float swide[], bool bScroll, bool bRed)
   int iz=XfromFreq(5000.0);
   int jz=iz*m_binsPerPixel;
   m_fMax=FreqfromX(iz);
-
   if(bScroll and swide[0]<1.e29) {
     flat4_(swide,&iz,&m_Flatten);
     if(!m_bReplot) flat4_(&dec_data.savg[j0],&jz,&m_Flatten);
@@ -506,7 +505,7 @@ void CPlotter::DrawOverlay()                   //DrawOverlay()
      or m_mode=="QRA64" or m_mode=="FT8" or m_mode=="FT4"
      or m_mode.startsWith("FST4")) {
 
-    if(m_mode=="FST4") {
+    if(m_mode=="FST4" and !m_bSingleDecode) {
       x1=XfromFreq(m_nfa);
       x2=XfromFreq(m_nfb);
       painter0.drawLine(x1,25,x1+5,30);   // Mark FST4 F_Low
@@ -663,7 +662,9 @@ void CPlotter::setPlot2dZero(int plot2dZero)              //setPlot2dZero
 void CPlotter::setStartFreq(int f)                    //SetStartFreq()
 {
   m_startFreq=f;
+  m_fMax=FreqfromX(XfromFreq(5000.0));
   resizeEvent(NULL);
+  DrawOverlay();
   update();
 }
 
@@ -684,6 +685,7 @@ void CPlotter::setRxRange(int fMin)                           //setRxRange
 void CPlotter::setBinsPerPixel(int n)                         //setBinsPerPixel
 {
   m_binsPerPixel = n;
+  m_fMax=FreqfromX(XfromFreq(5000.0));
   DrawOverlay();                         //Redraw scales and ticks
   update();                              //trigger a new paintEvent}
 }
@@ -824,8 +826,15 @@ void CPlotter::setFST4_FreqRange(int fLow,int fHigh)
   m_nfa=fLow;
   m_nfb=fHigh;
   DrawOverlay();
+  update();
 }
 
+void CPlotter::setSingleDecode(bool b)
+{
+  m_bSingleDecode=b;
+}
+
+
 void CPlotter::setColours(QVector<QColor> const& cl)
 {
   g_ColorTbl = cl;