Fix Summary Multiplot subplot colspan issue (#8805)

Fix colspan bug for summary multiplots

ApplicationLibCode/ProjectDataModel/Summary/RimSummaryMultiPlot.cpp

@@ -31,12 +31,12 @@
 #include "RimSummaryCurve.h"
 #include "RimSummaryPlotControls.h"
 
-#include "RimMultiPlot.h"
 #include "RimSummaryAddress.h"
 #include "RimSummaryPlot.h"
 #include "RimSummaryPlotNameHelper.h"
 #include "RimSummaryPlotSourceStepping.h"
 
+#include "RiuSummaryMultiPlotBook.h"
 #include "RiuSummaryVectorSelectionUi.h"
 
 #include "cafPdmUiComboBoxEditor.h"
@@ -619,3 +619,17 @@ void RimSummaryMultiPlot::onSubPlotAxisChanged( const caf::SignalEmitter* emitte
         }
     }
 }
+
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+QWidget* RimSummaryMultiPlot::createViewWidget( QWidget* mainWindowParent )
+{
+    if ( m_viewer.isNull() )
+    {
+        m_viewer = new RiuSummaryMultiPlotBook( this, mainWindowParent );
+    }
+    recreatePlotWidgets();
+
+    return m_viewer;
+}

ApplicationLibCode/ProjectDataModel/Summary/RimSummaryMultiPlot.h

@@ -87,6 +87,8 @@ protected:
 
     void initAfterRead() override;
 
+    QWidget* createViewWidget( QWidget* mainWindowParent ) override;
+
 private:
     void defineUiOrdering( QString uiConfigName, caf::PdmUiOrdering& uiOrdering ) override;
     void fieldChangedByUi( const caf::PdmFieldHandle* changedField, const QVariant& oldValue, const QVariant& newValue ) override;