--- /dev/null
+// Copyright (C) 2007-2016 CEA/DEN, EDF R&D, OPEN CASCADE
+//
+// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
+// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library 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
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+//
+// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
+//
+
+// GEOM GEOMGUI : GUI for Geometry component
+// File : MeasureGUI_AnnotationInteractor.h
+// Author : Anton POLETAEV, Open CASCADE S.A.S.
+//
+#ifndef MEASUREGUI_ANNOTATIONINTERACTOR_H
+#define MEASUREGUI_ANNOTATIONINTERACTOR_H
+
+#include <GEOM_Annotation.hxx>
+#include <SelectMgr_EntityOwner.hxx>
+#include <SelectMgr_SequenceOfOwner.hxx>
+#include <QObject>
+#include <QPoint>
+
+class GeometryGUI;
+class OCCViewer_Viewer;
+class OCCViewer_ViewManager;
+class OCCViewer_ViewPort3d;
+class SUIT_ViewWindow;
+
+/*!
+ * \class MeasureGUI_AnnotationInteractor
+ * \brief Class implementing logical layer for interactive dragging of annotation
+ * labels. It includes two components: listener for GUI events occuring
+ * inside of OCCT 3D viewer and processor for hooked events to perform
+ * interactive modification of the selected annotation within current
+ * AIS context.
+ */
+class MeasureGUI_AnnotationInteractor : public QObject
+{
+ Q_OBJECT
+
+public:
+
+ //! Constructor.
+ //! Connects to existing viewer/view windows to process events.
+ //! \param theGUI [in] the geometry module's GUI interface.
+ //! \param theOwner [in] the owner of the instance.
+ MeasureGUI_AnnotationInteractor( GeometryGUI* theGUI, QObject* theOwner );
+
+ //! Destructor.
+ virtual ~MeasureGUI_AnnotationInteractor();
+
+public:
+
+ //! Enables event processing and interaction handlers.
+ void Enable();
+
+ //! Disables event processing and interaction handlers.
+ void Disable();
+
+ //! Set entry of allowed annotation presentations.
+ void SetEditEntry( const QString& theEntry ) { myEditEntry = theEntry; }
+
+protected:
+
+ //! Connect interactor's event handler to the view window given.
+ void ConnectView( SUIT_ViewWindow* theWindow );
+
+ //! Disconnect interactor's event handler from the view window given.
+ void DisconnectView( SUIT_ViewWindow* theWindow );
+
+signals:
+
+ //! Emitted when interactor begins modification of the interactive object.
+ void SignalInteractionStarted( Handle_GEOM_Annotation theIO );
+
+ //! Emitted when interactor finished modification of the interactive object.
+ void SignalInteractionFinished( Handle_GEOM_Annotation theIO );
+
+protected slots:
+
+ //! Handler for signal coming from GUI layer.
+ void OnViewCreated( SUIT_ViewWindow* );
+
+ //! Handler for signal coming from GUI layer.
+ void OnViewRemoved( SUIT_ViewWindow* );
+
+protected:
+
+ //! Hooks and process events from OCCT viewer prior to their coming into the base viewer class.
+ //! It handles the events coming to viewport and identifies whether the events can
+ //! invoke an interaction operation or not. If yes, the operation is performed within the
+ //! interactor class and events are "accepted". Otherwise, the events are passed to
+ //! viewer's subroutines.
+ virtual bool eventFilter( QObject*, QEvent* );
+
+private:
+
+ GeometryGUI* myGeomGUI;
+ bool myIsEnabled;
+ OCCViewer_ViewManager* myVM;
+ OCCViewer_Viewer* myViewer;
+ OCCViewer_ViewPort3d* myActiveViewPort;
+ Handle(GEOM_Annotation) myActiveIO;
+ SelectMgr_SequenceOfOwner mySelection;
+ QPoint myStartPoint;
+ QString myEditEntry;
+};
+
+#endif
