From 5c4878a00a4f544cbc33cc09d97d9964d9ba750e Mon Sep 17 00:00:00 2001
From: Joe Taylor <joe@princeton.edu>
Date: Fri, 24 Jul 2020 13:35:04 -0400
Subject: [PATCH] Display cursor position on Wide graph as a ToolTip.

---
 widgets/plotter.cpp | 8 ++++++++
 widgets/plotter.h   | 2 ++
 2 files changed, 10 insertions(+)

diff --git a/widgets/plotter.cpp b/widgets/plotter.cpp
index fb65bd775..c21d7e5f0 100644
--- a/widgets/plotter.cpp
+++ b/widgets/plotter.cpp
@@ -56,6 +56,7 @@ CPlotter::CPlotter(QWidget *parent) :                  //CPlotter Constructor
   setAutoFillBackground(false);
   setAttribute(Qt::WA_OpaquePaintEvent, false);
   setAttribute(Qt::WA_NoSystemBackground, true);
+  setMouseTracking(true);
   m_bReplot=false;
 
   // contextual pop up menu
@@ -697,6 +698,13 @@ void CPlotter::setRxFreq (int x)                               //setRxFreq
 
 int CPlotter::rxFreq() {return m_rxFreq;}                      //rxFreq
 
+void CPlotter::mouseMoveEvent (QMouseEvent * event)
+{
+  int x=event->x();
+  QToolTip::showText(event->globalPos(),QString::number(int(FreqfromX(x))));
+  QWidget::mouseMoveEvent(event);
+}
+
 void CPlotter::mouseReleaseEvent (QMouseEvent * event)
 {
   if (Qt::LeftButton == event->button () and m_mode!="FST4W") {
diff --git a/widgets/plotter.h b/widgets/plotter.h
index b3eb85855..b4b4cf42b 100644
--- a/widgets/plotter.h
+++ b/widgets/plotter.h
@@ -13,6 +13,7 @@
 #include <QImage>
 #include <QVector>
 #include <QColor>
+#include <QToolTip>
 
 #define VERT_DIVS 7	//specify grid screen divisions
 #define HORZ_DIVS 20
@@ -91,6 +92,7 @@ protected:
   //re-implemented widget event handlers
   void paintEvent(QPaintEvent *event) override;
   void resizeEvent(QResizeEvent* event) override;
+  void mouseMoveEvent(QMouseEvent * event) override;
   void mouseReleaseEvent (QMouseEvent * event) override;
   void mouseDoubleClickEvent (QMouseEvent * event) override;