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# Hybrid/vtkScalarBarWidget.h

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    00001 /*=========================================================================
    00002
    00003   Program:   Visualization Toolkit
    00004   Module:    $RCSfile: vtkScalarBarWidget.h,v $
    00005   Language:  C++
    00006
    00007   Copyright (c) 1993-2002 Ken Martin, Will Schroeder, Bill Lorensen
    00008   All rights reserved.
    00009   See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
    00010
    00011      This software is distributed WITHOUT ANY WARRANTY; without even
    00012      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
    00013      PURPOSE.  See the above copyright notice for more information.
    00014
    00015 =========================================================================*/
    00055 #ifndef __vtkScalarBarWidget_h
    00056 #define __vtkScalarBarWidget_h
    00057
    00058 #include "vtkInteractorObserver.h"
    00059 class vtkScalarBarActor;
    00060
    00061 class VTK_HYBRID_EXPORT vtkScalarBarWidget : public vtkInteractorObserver
    00062 {
    00063 public:
    00064   static vtkScalarBarWidget *New();
    00065   vtkTypeRevisionMacro(vtkScalarBarWidget,vtkInteractorObserver);
    00066   void PrintSelf(ostream& os, vtkIndent indent);
    00067
    00069
    00070   void SetScalarBarActor(vtkScalarBarActor *scalarbar);
    00071   vtkGetObjectMacro(ScalarBarActor,vtkScalarBarActor);
    00073
    00075   virtual void SetEnabled(int);
    00076
    00077 protected:
    00078   vtkScalarBarWidget();
    00079   ~vtkScalarBarWidget();
    00080
    00081   // the actor that is used
    00082   vtkScalarBarActor *ScalarBarActor;
    00083
    00084   //handles the events
    00085   static void ProcessEvents(vtkObject* object,
    00086                             unsigned long event,
    00087                             void* clientdata,
    00088                             void* calldata);
    00089
    00090   // ProcessEvents() dispatches to these methods.
    00091   void OnLeftButtonDown();
    00092   void OnLeftButtonUp();
    00093   void OnRightButtonDown();
    00094   void OnRightButtonUp();
    00095   void OnMouseMove();
    00096
    00097   // used to compute relative movements
    00098   float StartPosition[2];
    00099
    00100 //BTX - manage the state of the widget
    00101   int State;
    00102   // use this to track whether left/right button was pressed to gate
    00103   // action on button up event.
    00104   int LeftButtonDown;
    00105   int RightButtonDown;
    00106   enum WidgetState
    00107   {
    00108     Moving=0,
    00109     AdjustingP1,
    00110     AdjustingP2,
    00111     AdjustingP3,
    00112     AdjustingP4,
    00113     AdjustingE1,
    00114     AdjustingE2,
    00115     AdjustingE3,
    00116     AdjustingE4,
    00117     Inside,
    00118     Outside
    00119   };
    00120 //ETX
    00121
    00122   // use to determine what state the mouse is over, edge1 p1, etc.
    00123   // returns a state from the WidgetState enum above
    00124   int ComputeStateBasedOnPosition(int X, int Y, int *pos1, int *pos2);
    00125
    00126   // set the cursor to the correct shape based on State argument
    00127   void SetCursor(int State);
    00128
    00129 private:
    00130   vtkScalarBarWidget(const vtkScalarBarWidget&);  //Not implemented
    00131   void operator=(const vtkScalarBarWidget&);  //Not implemented
    00132 };
    00133
    00134 #endif