Improved, simplified sort routine; faster and better "flatten"

procedure; better window functions for some FFTs, resulting in
better decoder performance; User-selectable colors for backgrounds
of decoded messages.  NB: more testing is desirable!



git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@4951 ab8295b8-cf94-4d9e-aec4-7959e3be5d79

widegraph.cpp

@@ -49,6 +49,7 @@ WideGraph::WideGraph(QSettings * settings, QWidget *parent) :
   int n = m_settings->value("FreqSpan",2).toInt();
   m_bFlatten=m_settings->value("Flatten",true).toBool();
   ui->cbFlatten->setChecked(m_bFlatten);
+  ui->widePlot->setFlatten(m_bFlatten);
   ui->widePlot->setBreadth(m_settings->value("PlotWidth",1000).toInt());
   ui->freqSpanSpinBox->setValue(n);
   ui->widePlot->setNSpan(n);
@@ -364,6 +365,7 @@ void WideGraph::on_paletteComboBox_activated (QString const& palette)
 void WideGraph::on_cbFlatten_toggled(bool b)
 {
   m_bFlatten=b;
+  ui->widePlot->setFlatten(m_bFlatten);
 }
 
 void WideGraph::on_adjust_palette_push_button_clicked (bool)