From f175056e2b04eccfb6b32ff0ee58d60e41dbf664 Mon Sep 17 00:00:00 2001
From: Mark Liversedge <liversedge@gmail.com>
Date: Fri, 13 Jun 2014 12:44:12 +0100
Subject: [PATCH] Isolate Curve Labels but not Vertical Markers

.. as they represent intervals and events and are therefore
   related to the x-axis (time/distance) rather than any
   y-axis we may be showing / hiding.
---
 src/AllPlot.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/AllPlot.h b/src/AllPlot.h
index 86e278d09..7ebe1c593 100644
--- a/src/AllPlot.h
+++ b/src/AllPlot.h
@@ -140,6 +140,9 @@ class CurveColors : public QObject
             // Labels
             foreach(QwtPlotItem *item, plot->itemList(QwtPlotItem::Rtti_PlotMarker)) {
 
+                // ignore event / interval markers
+                if (static_cast<QwtPlotMarker*>(item)->lineStyle() == QwtPlotMarker::VLine) continue;
+
                 QwtScaleWidget *x = plot->axisWidget(static_cast<QwtPlotMarker*>(item)->yAxis());
                 labels.insert(static_cast<QwtPlotMarker*>(item), x);
             }