1 files changed, 221 insertions, 0 deletions
diff --git a/gr-qtgui/lib/DisplayPlot.cc b/gr-qtgui/lib/DisplayPlot.cc
new file mode 100644
index 0000000000..577b4f1483
--- /dev/null
+++ b/gr-qtgui/lib/DisplayPlot.cc
@@ -0,0 +1,221 @@
+/* -*- 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 <DisplayPlot.h>
+
+#include <qwt_scale_draw.h>
+#include <qwt_legend.h>
+#include <QColor>
+#include <cmath>
+#include <iostream>
+
+DisplayPlot::DisplayPlot(int nplots, QWidget* parent)
+  : QwtPlot(parent), _nplots(nplots), _stop(false)
+{
+  resize(parent->width(), parent->height());
+
+  // Disable polygon clipping
+#if QWT_VERSION < 0x060000
+  QwtPainter::setDeviceClipping(false);
+#else
+  QwtPainter::setPolylineSplitting(false);
+#endif
+
+#if QWT_VERSION < 0x060000
+  // We don't need the cache here
+  canvas()->setPaintAttribute(QwtPlotCanvas::PaintCached, false);
+  canvas()->setPaintAttribute(QwtPlotCanvas::PaintPacked, false);
+#endif
+
+  QPalette palette;
+  palette.setColor(canvas()->backgroundRole(), QColor("white"));
+  canvas()->setPalette(palette);
+
+  _panner = new QwtPlotPanner(canvas());
+  _panner->setAxisEnabled(QwtPlot::yRight, false);
+  _panner->setMouseButton(Qt::MidButton);
+
+  // emit the position of clicks on widget
+  _picker = new QwtDblClickPlotPicker(canvas());
+
+#if QWT_VERSION < 0x060000
+  connect(_picker, SIGNAL(selected(const QwtDoublePoint &)),
+	  this, SLOT(OnPickerPointSelected(const QwtDoublePoint &)));
+#else
+  _picker->setStateMachine(new QwtPickerDblClickPointMachine());
+  connect(_picker, SIGNAL(selected(const QPointF &)),
+	  this, SLOT(OnPickerPointSelected6(const QPointF &)));
+#endif
+
+  // Configure magnify on mouse wheel
+  _magnifier = new QwtPlotMagnifier(canvas());
+  _magnifier->setAxisEnabled(QwtPlot::xBottom, false);
+
+  // Avoid jumping when labels with more/less digits
+  // appear/disappear when scrolling vertically
+
+  const QFontMetrics fm(axisWidget(QwtPlot::yLeft)->font());
+  QwtScaleDraw *sd = axisScaleDraw(QwtPlot::yLeft);
+  sd->setMinimumExtent( fm.width("100.00") );
+
+  QwtLegend* legendDisplay = new QwtLegend(this);
+  legendDisplay->setItemMode(QwtLegend::CheckableItem);
+  insertLegend(legendDisplay);
+
+  connect(this, SIGNAL(legendChecked(QwtPlotItem *, bool)),
+	  this, SLOT(LegendEntryChecked(QwtPlotItem *, bool)));
+}
+
+DisplayPlot::~DisplayPlot()
+{
+  // _zoomer and _panner deleted when parent deleted
+}
+
+void
+DisplayPlot::setYaxis(double min, double max)
+{
+  setAxisScale(QwtPlot::yLeft, min, max);
+  _zoomer->setZoomBase();
+}
+
+void
+DisplayPlot::setXaxis(double min, double max)
+{
+  setAxisScale(QwtPlot::xBottom, min, max);
+  _zoomer->setZoomBase();
+}
+
+void
+DisplayPlot::setTitle(int which, QString title)
+{
+  _plot_curve[which]->setTitle(title);
+}
+
+QString
+DisplayPlot::title(int which)
+{
+  return _plot_curve[which]->title().text();
+}
+
+void
+DisplayPlot::setColor(int which, QString color)
+{
+  // Set the color of the pen
+  QPen pen(_plot_curve[which]->pen());
+  pen.setColor(color);
+  _plot_curve[which]->setPen(pen);
+
+  // And set the color of the markers
+#if QWT_VERSION < 0x060000
+  //_plot_curve[which]->setBrush(QBrush(QColor(color)));
+  _plot_curve[which]->setPen(pen);
+
+  QwtSymbol sym = (QwtSymbol)_plot_curve[which]->symbol();
+  setLineMarker(which, sym.style());
+#else
+  QwtSymbol *sym = (QwtSymbol*)_plot_curve[which]->symbol();
+  sym->setColor(color);
+  sym->setPen(pen);
+  _plot_curve[which]->setSymbol(sym);
+#endif
+}
+
+void
+DisplayPlot::setLineWidth(int which, int width)
+{
+  // Set the new line width
+  QPen pen(_plot_curve[which]->pen());
+  pen.setWidth(width);
+  _plot_curve[which]->setPen(pen);
+
+  // Scale the marker size proportionally
+#if QWT_VERSION < 0x060000
+  QwtSymbol sym = (QwtSymbol)_plot_curve[which]->symbol();
+  sym.setSize(7+10*log10(width), 7+10*log10(width));
+  _plot_curve[which]->setSymbol(sym);
+#else
+  QwtSymbol *sym = (QwtSymbol*)_plot_curve[which]->symbol();
+  sym->setSize(7+10*log10(width), 7+10*log10(width));
+  _plot_curve[which]->setSymbol(sym);
+#endif
+}
+
+void
+DisplayPlot::setLineStyle(int which, Qt::PenStyle style)
+{
+  QPen pen(_plot_curve[which]->pen());
+  pen.setStyle(style);
+  _plot_curve[which]->setPen(pen);
+}
+
+void
+DisplayPlot::setLineMarker(int which, QwtSymbol::Style marker)
+{
+#if QWT_VERSION < 0x060000
+  QwtSymbol sym = (QwtSymbol)_plot_curve[which]->symbol();
+  QPen pen(_plot_curve[which]->pen());
+  QBrush brush(pen.color());
+  sym.setStyle(marker);
+  sym.setPen(pen);
+  sym.setBrush(brush);
+  _plot_curve[which]->setSymbol(sym);
+#else
+  QwtSymbol *sym = (QwtSymbol*)_plot_curve[which]->symbol();
+  sym->setStyle(marker);
+  _plot_curve[which]->setSymbol(sym);
+#endif
+}
+
+void
+DisplayPlot::setStop(bool on)
+{
+  _stop = on;  
+}
+
+void
+DisplayPlot::resizeSlot( QSize *s )
+{
+  // -10 is to spare some room for the legend and x-axis label
+  resize(s->width()-10, s->height()-10);
+}
+
+void DisplayPlot::LegendEntryChecked(QwtPlotItem* plotItem, bool on)
+{
+  plotItem->setVisible(!on);
+  replot();
+}
+
+void
+DisplayPlot::OnPickerPointSelected(const QwtDoublePoint & p)
+{
+  QPointF point = p;
+  //fprintf(stderr,"OnPickerPointSelected %f %f\n", point.x(), point.y());
+  emit plotPointSelected(point);
+}
+
+void
+DisplayPlot::OnPickerPointSelected6(const QPointF & p)
+{
+  QPointF point = p;
+  //fprintf(stderr,"OnPickerPointSelected %f %f\n", point.x(), point.y());
+  emit plotPointSelected(point);
+}