(#466) Clicking a plot curve selects the item in the project tree view

ApplicationCode/ProjectDataModel/RimWellLogPlotCurve.h

@@ -47,6 +47,9 @@ public:
     
     void    setPlot(RiuWellLogTracePlot* plot);
     void    detachCurve();
+
+    QwtPlotCurve* plotCurve() const { return m_plotCurve; }
+    
     virtual void                 updatePlotData();
 
 protected:

ApplicationCode/ProjectDataModel/RimWellLogPlotTrace.cpp

@@ -232,3 +232,19 @@ void RimWellLogPlotTrace::updateAxisRangesAndReplot()
         }
     }
 }
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+RimWellLogPlotCurve* RimWellLogPlotTrace::curveDefinitionFromCurve(const QwtPlotCurve* curve) const
+{
+    for (size_t idx = 0; idx < curves.size(); idx++)
+    {
+        if (curves[idx]->plotCurve() == curve)
+        {
+            return curves[idx];
+        }
+    }
+
+    return NULL;
+}

ApplicationCode/ProjectDataModel/RimWellLogPlotTrace.h

@@ -30,6 +30,8 @@
 class RimWellLogPlotCurve;
 class RiuWellLogTracePlot;
 
+class QwtPlotCurve;
+
 //==================================================================================================
 ///  
 ///  
@@ -54,6 +56,8 @@ public:
 
     RiuWellLogTracePlot* viewer();
     
+    RimWellLogPlotCurve* curveDefinitionFromCurve(const QwtPlotCurve* curve) const;
+
 protected:
 
     // Overridden PDM methods

ApplicationCode/UserInterface/RiuWellLogTracePlot.cpp

@@ -21,6 +21,7 @@
 
 #include "RimWellLogPlot.h"
 #include "RimWellLogPlotTrace.h"
+#include "RimWellLogPlotCurve.h"
 
 #include "RiuMainWindow.h"
 
@@ -32,8 +33,10 @@
 #include "qwt_plot_layout.h"
 #include "qwt_scale_draw.h"
 #include "qwt_text.h"
+#include "qwt_plot_curve.h"
 
 #include <QWheelEvent>
+#include <QMouseEvent>
 #include <QFont>
 
 #define RIU_SCROLLWHEEL_ZOOMFACTOR  1.1
@@ -190,6 +193,17 @@ bool RiuWellLogTracePlot::eventFilter(QObject* watched, QEvent* event)
             event->accept();
             return true;
         }
+        else
+        {
+            QMouseEvent* mouseEvent = dynamic_cast<QMouseEvent*>(event);
+            if (mouseEvent)
+            {
+                if (mouseEvent->button() == Qt::LeftButton)
+                {
+                    selectClosestCurve(mouseEvent->pos());
+                }
+            }
+        }
     }
 
     return QwtPlot::eventFilter(watched, event);
@@ -205,3 +219,37 @@ void RiuWellLogTracePlot::focusInEvent(QFocusEvent* event)
         RiuMainWindow::instance()->projectTreeView()->selectAsCurrentItem(m_plotTraceDefinition);
     }
 }
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+void RiuWellLogTracePlot::selectClosestCurve(const QPoint& pos)
+{
+    QwtPlotCurve* closestCurve = NULL;
+    double distMin = DBL_MAX;
+
+    const QwtPlotItemList& itmList = itemList();
+    for (QwtPlotItemIterator it = itmList.begin(); it != itmList.end(); it++)
+    {
+        if ((*it )->rtti() == QwtPlotItem::Rtti_PlotCurve )
+        {
+            QwtPlotCurve* candidateCurve = static_cast<QwtPlotCurve*>(*it);
+            double dist;
+            int idx = candidateCurve->closestPoint(pos, &dist);
+            if (dist < distMin)
+            {
+                closestCurve = candidateCurve;
+                distMin = dist;
+            }
+        }
+    }
+
+    if (closestCurve)
+    {
+        RimWellLogPlotCurve* selectedCurve = m_plotTraceDefinition->curveDefinitionFromCurve(closestCurve);
+        if (selectedCurve)
+        {
+            RiuMainWindow::instance()->projectTreeView()->selectAsCurrentItem(selectedCurve);
+        }
+    }
+}

ApplicationCode/UserInterface/RiuWellLogTracePlot.h

@@ -49,6 +49,7 @@ protected:
 
 private:
     void setDefaults();
+    void selectClosestCurve(const QPoint& pos);
 
 private:
     RimWellLogPlotTrace*    m_plotTraceDefinition;