ENH: (Visu Refactoring) Adding a new action handler to change the full area

Code/VisuRefac/otbChangeExtractRegionActionHandler.h

+/*=========================================================================
+
+  Program:   ORFEO Toolbox
+  Language:  C++
+  Date:      $Date$
+  Version:   $Revision$
+
+
+  Copyright (c) Centre National d'Etudes Spatiales. All rights reserved.
+  See OTBCopyright.txt for details.
+
+
+     This software is distributed WITHOUT ANY WARRANTY; without even
+     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+     PURPOSE.  See the above copyright notices for more information.
+
+=========================================================================*/
+#ifndef __otbChangeExtractRegionActionHandler_h
+#define __otbChangeExtractRegionActionHandler_h
+
+#include "otbImageWidgetActionHandler.h"
+
+namespace otb
+{
+/** \class ChangeExtractRegionActionHandler
+*   \brief Implements basic Scroll, Full and Zoom  widgets resizing.
+* 
+*   \sa ImageWidgetController
+*   \sa ImageWidgetActionHandler
+*/
+
+template <class TModel, class TView> 
+class ChangeExtractRegionActionHandler
+  : public ImageWidgetActionHandler
+{
+public:
+  /** Standard class typedefs */
+  typedef ChangeExtractRegionActionHandler Self;
+  typedef ImageWidgetActionHandler               Superclass;
+  typedef itk::SmartPointer<Self>                Pointer;
+  typedef itk::SmartPointer<const Self>          ConstPointer;
+  
+  /** Method for creation through the object factory */
+  itkNewMacro(Self);
+  
+  /** Runtime information */
+  itkTypeMacro(ChangeExtractRegionActionHandler,ImageWidgetActionHandler);
+
+  /** Model typedefs */
+  typedef TModel                         ModelType;
+  typedef typename ModelType::Pointer    ModelPointerType;
+  typedef typename ModelType::RegionType RegionType;
+
+  /** View typedefs */
+  typedef TView                          ViewType;
+  typedef typename ViewType::Pointer     ViewPointerType;
+
+
+  /** Handle widget event
+   * \param widgetId The id of the moved widget
+   * \param event The event
+   * \return The handling return code
+   */
+  virtual bool HandleWidgetEvent(std::string widgetId, int event)
+  {
+    if( m_View.IsNotNull() && m_Model.IsNotNull() )
+      {
+      if(widgetId == m_View->GetScrollWidget()->GetIdentifier()
+	 && event == FL_PUSH)
+	{
+	// Get the clicked index
+	typename ViewType::IndexType index;
+	index[0] = Fl::event_x();
+	index[1] = Fl::event_y();
+	// Change scaled extract region center
+	m_Model->SetExtractRegionSubsampledCenter(m_View->GetScrollWidget()->ScreenIndexToRegionIndex(index));
+	// Update model
+	m_Model->Update();
+	return true;
+	}
+      }
+    return false;
+  }
+  
+  /** Set/Get the pointer to the view */
+  itkSetObjectMacro(View,ViewType);
+  itkGetObjectMacro(View,ViewType);
+
+  /** Set/Get the pointer to the model */
+  itkSetObjectMacro(Model,ModelType);
+  itkGetObjectMacro(Model,ModelType);
+
+protected:
+  /** Constructor */
+  ChangeExtractRegionActionHandler() : m_View(), m_Model()
+  {}
+
+  /** Destructor */
+  virtual ~ChangeExtractRegionActionHandler(){}
+  /** Printself method */
+  void PrintSelf(std::ostream& os, itk::Indent indent) const
+  {
+    Superclass::PrintSelf(os,indent);
+  }
+ 
+private:
+  ChangeExtractRegionActionHandler(const Self&);    // purposely not implemented
+  void operator=(const Self&); // purposely not implemented
+
+  // Pointer to the view
+  ViewPointerType m_View;
+  
+  // Pointer to the model
+  ModelPointerType m_Model;
+  
+}; // end class 
+} // end namespace otb
+#endif
+
+