0029674: Improvements in Inspector tool

- preferences for dock windows geometry, tree view columns and current view projection;
- ViewControl package for common functionality between plugins;
- processing Location and Orientation for external TopoDS_Shape object
- 'F5' key to update content of each plugin
- visibility column in tree view (used now only in ShapeView)
- properties child item for context (presents tree of current Filters of context)

tools/ShapeView/ShapeView_VisibilityState.cxx

@@ -0,0 +1,52 @@
+// Created on: 2017-06-16
+// Created by: Natalia ERMOLAEVA
+// Copyright (c) 2017 OPEN CASCADE SAS
+//
+// This file is part of Open CASCADE Technology software library.
+//
+// This library is free software; you can redistribute it and/or modify it under
+// the terms of the GNU Lesser General Public License version 2.1 as published
+// by the Free Software Foundation, with special exception defined in the file
+// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
+// distribution for complete text of the license and disclaimer of any warranty.
+//
+// Alternatively, this file may be used under the terms of Open CASCADE
+// commercial license or contractual agreement. 
+
+#include <inspector/ShapeView_VisibilityState.hxx>
+
+#include <inspector/ShapeView_ItemShape.hxx>
+
+// =======================================================================
+// function : SetVisible
+// purpose :
+// =======================================================================
+bool ShapeView_VisibilityState::SetVisible (const QModelIndex& theIndex, const bool theState, const bool toEmitDataChanged)
+{
+  TopoDS_Shape aShape = GetShape (theIndex);
+  if (aShape.IsNull())
+    return false;
+
+  myDisplayer->SetVisible (aShape, theState, myPresentationType);
+
+  if (toEmitDataChanged)
+    getModel()->EmitDataChanged (theIndex, theIndex);
+  return true;
+}
+
+// =======================================================================
+// function : GetShape
+// purpose :
+// =======================================================================
+TopoDS_Shape ShapeView_VisibilityState::GetShape (const QModelIndex& theIndex) const
+{
+  TreeModel_ItemBasePtr anItemBase = TreeModel_ModelBase::GetItemByIndex (theIndex);
+  if (!anItemBase)
+    return TopoDS_Shape();
+
+  ShapeView_ItemShapePtr aShapeItem = itemDynamicCast<ShapeView_ItemShape>(anItemBase);
+  if (!aShapeItem)
+    return TopoDS_Shape();
+
+  return aShapeItem->GetItemShape();
+}