1 files changed, 162 insertions, 0 deletions
diff --git a/gr-qtgui/lib/freqdisplayform.cc b/gr-qtgui/lib/freqdisplayform.cc
new file mode 100644
index 0000000000..410bb4a048
--- /dev/null
+++ b/gr-qtgui/lib/freqdisplayform.cc
@@ -0,0 +1,162 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2012 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include <cmath>
+#include <QMessageBox>
+#include <freqdisplayform.h>
+#include <iostream>
+
+FreqDisplayForm::FreqDisplayForm(int nplots, QWidget* parent)
+  : DisplayForm(nplots, parent)
+{
+  _intValidator = new QIntValidator(this);
+  _intValidator->setBottom(0);
+
+  _layout = new QGridLayout(this);
+  _displayPlot = new FrequencyDisplayPlot(nplots, this);
+  _layout->addWidget(_displayPlot, 0, 0);
+  setLayout(_layout);
+
+  _numRealDataPoints = 1024;
+  _fftsize = 1024;
+  _fftavg = 1.0;
+  
+  FFTSizeMenu *sizemenu = new FFTSizeMenu(this);
+  FFTAverageMenu *avgmenu = new FFTAverageMenu(this);
+  FFTWindowMenu *winmenu = new FFTWindowMenu(this);
+  _menu->addMenu(sizemenu);
+  _menu->addMenu(avgmenu);
+  _menu->addMenu(winmenu);
+  connect(sizemenu, SIGNAL(whichTrigger(int)),
+	  this, SLOT(setFFTSize(const int)));
+  connect(avgmenu, SIGNAL(whichTrigger(float)),
+	  this, SLOT(setFFTAverage(const float)));
+  connect(winmenu, SIGNAL(whichTrigger(gr::filter::firdes::win_type)),
+	  this, SLOT(setFFTWindowType(const gr::filter::firdes::win_type)));
+
+  Reset();
+
+  connect(_displayPlot, SIGNAL(plotPointSelected(const QPointF)),
+	  this, SLOT(onPlotPointSelected(const QPointF)));
+}
+
+FreqDisplayForm::~FreqDisplayForm()
+{
+  // Qt deletes children when parent is deleted
+
+  // Don't worry about deleting Display Plots - they are deleted when parents are deleted
+  delete _intValidator;
+}
+
+FrequencyDisplayPlot*
+FreqDisplayForm::getPlot()
+{
+  return ((FrequencyDisplayPlot*)_displayPlot);
+}
+
+void
+FreqDisplayForm::newData(const QEvent *updateEvent)
+{
+  FreqUpdateEvent *fevent = (FreqUpdateEvent*)updateEvent;
+  const std::vector<double*> dataPoints = fevent->getPoints();
+  const uint64_t numDataPoints = fevent->getNumDataPoints();
+
+  getPlot()->PlotNewData(dataPoints, numDataPoints,
+			 0, 0, 0, d_update_time);
+}
+
+void
+FreqDisplayForm::customEvent( QEvent * e)
+{
+  if(e->type() == FreqUpdateEvent::Type()) {
+    newData(e);
+  }
+}
+
+int
+FreqDisplayForm::getFFTSize() const
+{
+  return _fftsize;
+}
+
+float
+FreqDisplayForm::getFFTAverage() const
+{
+  return _fftavg;
+}
+
+gr::filter::firdes::win_type
+FreqDisplayForm::getFFTWindowType() const
+{
+  return _fftwintype;
+}
+
+void
+FreqDisplayForm::setFFTSize(const int newsize)
+{
+  _fftsize = newsize;
+}
+
+void
+FreqDisplayForm::setFFTAverage(const float newavg)
+{
+  _fftavg = newavg;
+  getPlot()->replot();
+}
+
+void
+FreqDisplayForm::setFFTWindowType(const gr::filter::firdes::win_type newwin)
+{
+  _fftwintype = newwin;
+}
+
+void
+FreqDisplayForm::setFrequencyRange(const double newCenterFrequency,
+				   const double newStartFrequency,
+				   const double newStopFrequency)
+{
+  double fdiff = std::max(fabs(newStartFrequency), fabs(newStopFrequency));
+
+  if(fdiff > 0) {
+    std::string strunits[4] = {"Hz", "kHz", "MHz", "GHz"};
+    double units10 = floor(log10(fdiff));
+    double units3  = std::max(floor(units10 / 3.0), 0.0);
+    double units = pow(10, (units10-fmod(units10, 3.0)));
+    int iunit = static_cast<int>(units3);
+
+    _startFrequency = newStartFrequency;
+    _stopFrequency = newStopFrequency;
+    double centerFrequency = newCenterFrequency;
+
+    getPlot()->SetFrequencyRange(_startFrequency,
+				 _stopFrequency,
+				 centerFrequency,
+				 true,
+				 units, strunits[iunit]);
+  }
+}
+
+void
+FreqDisplayForm::setYaxis(double min, double max)
+{
+  getPlot()->setYaxis(min, max);
+}