#7739 Show only visible categories in legend

For the main Cell Result Legend, add an option to only show visible categories

ApplicationLibCode/ReservoirDataModel/RigVisibleCategoriesCalculator.h

@@ -0,0 +1,47 @@
+/////////////////////////////////////////////////////////////////////////////////
+//
+//  Copyright (C) 2021- Equinor ASA
+//
+//  ResInsight is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  ResInsight is distributed in the hope that it will be useful, but WITHOUT ANY
+//  WARRANTY; without even the implied warranty of MERCHANTABILITY or
+//  FITNESS FOR A PARTICULAR PURPOSE.
+//
+//  See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html>
+//  for more details.
+//
+/////////////////////////////////////////////////////////////////////////////////
+
+#pragma once
+
+#include <cstddef>
+#include <set>
+
+class RimEclipseView;
+class RigFlowDiagResults;
+class RigFlowDiagResultAddress;
+
+//==================================================================================================
+///
+//==================================================================================================
+class RigVisibleCategoriesCalculator
+{
+public:
+    static std::set<int> visibleFlowDiagCategories( RimEclipseView&                 eclView,
+                                                    RigFlowDiagResults&             flowDiagResults,
+                                                    const RigFlowDiagResultAddress& resVarAddr,
+                                                    size_t                          timeStepIndex );
+
+    static std::set<size_t> visibleAllanCategories( RimEclipseView* eclView );
+    static std::set<int>    visibleCategories( RimEclipseView* eclView );
+
+private:
+    static std::set<size_t> visibleNncConnectionIndices( RimEclipseView* eclView );
+
+    static void appendVisibleFaultCells( RimEclipseView* eclView, std::set<size_t>& visibleCells );
+    static void appendVisibleIntersectionCells( RimEclipseView* eclView, std::set<size_t>& visibleCells );
+};