roichangeprocessor.h

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/* This software and supporting documentation are distributed by
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#ifndef ROI_CHANGE_PROCESSOR
#define ROI_CHANGE_PROCESSOR
 
#include <aims/bucket/bucket.h>
#include <anatomist/graph/Graph.h>
#include <anatomist/graph/GraphObject.h>
#include <anatomist/bucket/Bucket.h>
#include <aims/vector/vector.h>
#include <stack>
 
namespace anatomist
{ 
  class AObject ;
  
  struct ChangesItem{
    AObject * before ;
    AObject * after ;
  } ;
  
  struct ChangedBucketsItem {
    Point3df min ; 
    Point3df max ;
  } ;
  
  class RoiChangeProcessor : public Observable {
  public:
    ~RoiChangeProcessor( ) ;
    static RoiChangeProcessor* instance() ;
    
    void applyChange( std::list<std::pair<Point3d, ChangesItem> > * change ) ;
    void undo() ;
    void redo() ;
    
    void setUndoable( bool undoable ) ;
    bool undoable() 
      { 
        AGraph * graph = getGraph(0) ;
        if( graph == 0 ){
          //cout << "Undoable :: graph nul" << endl ;
          return false ;
        }
        return !( myChangesToUndo[graph].empty() ) ; 
      }
    void setRedoable( bool redoable ) ;
    bool redoable() { 
        AGraph * graph = getGraph(0) ;
        if( graph == 0 ){
          //cout << "Redoable :: graph nul" << endl ;
          return false ;
        }
      return !( myChangesToRedo[graph].empty() ) ; 
    }
    void noMoreUndoable() ;
    Bucket * getCurrentRegion( AWindow* ) ;
    anatomist::AGraph *getGraph( AWindow* ) ;
    anatomist::AGraphObject * getGraphObject( AWindow* ) ;
    
  private:
    void change( bool forward ) ;
    RoiChangeProcessor( int maxNumberOfUndo = 20 ) : myUndoable(false), myRedoable(false), 
                                                     myMaxNumberOfUndo(maxNumberOfUndo), myCurrentChanges(0), 
      myCurrentGraph(0) {}
    
    bool updateCurrentRegion( AWindow * ) ;
    std::set<anatomist::AObject*> selectedObjectsInWindow( AWindow* ) ; 
   
    static RoiChangeProcessor * _instance ;
    
    bool myUndoable ;
    bool myRedoable ;
    int myMaxNumberOfUndo ;
    std::map< AGraph*, std::list< std::list< std::pair< Point3d, anatomist::ChangesItem> >* > > 
    myChangesToUndo ;
    std::map< AGraph*, std::list< std::list< std::pair< Point3d, anatomist::ChangesItem> >* > > 
    myChangesToRedo ;
    std::list< std::pair< Point3d, anatomist::ChangesItem> > * myCurrentChanges ;
    AGraph * myCurrentGraph ;
    Bucket * myCurrentRegion ;
  } ;
}
 
#endif