save only bool m_was_inside

GUI/View/PlotUtil/PlotEventHelper.cpp

@@ -19,7 +19,6 @@
 PlotEventHelper::PlotEventHelper(ScientificPlot* scientific_plot)
     : QObject(scientific_plot)
     , m_plot(scientific_plot)
-    , m_prevPos(scientific_plot->plotType())
 {
 }
 
@@ -52,15 +51,17 @@ void PlotEventHelper::onCustomMouseMove(QMouseEvent* event)
 
     if (currentPos.inAxesRange()) {
         m_plot->statusString(m_plot->infoString(event));
-
-        if (!m_prevPos.inAxesRange())
+        if (!m_was_inside) {
             enteringPlot();
+	    m_was_inside = true;
+	}
+        positionChanged(x, y);
 
-        positionChanged(currentPos.x(), currentPos.y());
-    } else if (m_prevPos.inAxesRange()) {
-        m_plot->statusString("");
-        leavingPlot();
+    } else {
+	if (m_was_inside) {
+	    m_plot->statusString("");
+	    leavingPlot();
+	    m_was_inside = false;
+	}
     }
-
-    m_prevPos = currentPos;
 }

GUI/View/PlotUtil/PlotEventHelper.h

@@ -44,7 +44,7 @@ public slots:
 
 private:
     ScientificPlot* m_plot;
-    PlotEventInfo m_prevPos;
+    bool m_was_inside = false;
 };
 
 #endif // BORNAGAIN_GUI_VIEW_PLOTUTIL_PLOTEVENTHELPER_H