RmMFCColorWheel.h

//=================================================================================================//
// filename: RmMFCColorWheel.h                                                                     //
//                                                                                                 //
//           ATI Research, Inc.                                                                    //
//           3D Application Research Group                                                         //
//                                                                                                 //
// description: Definition of the CRmColorWheel class.                                             //
//                                                                                                 //
//=================================================================================================//
//   (C) 2004 ATI Research, Inc.  All rights reserved.                                             //
//=================================================================================================//

#ifndef _RM_MFC_UTILITIES_COLOR_WHEEL_H_
#define _RM_MFC_UTILITIES_COLOR_WHEEL_H_

#include <MFCUtilities/RmMFCTypes.h>

//=================================================================================================//
// Class:         CRmColorWheel                                                                    //
//                                                                                                 //
// Description:   Class definition for CRmColorWheel                                               //
//                Derived from CWnd, this class                                                    //
//                creates a color wheel control                                                    //
//=================================================================================================//
class RMMFCUTIL_API CRmColorWheel : public CWnd
{
public: // Public member functions

   // Construction
        CRmColorWheel();
   
   // Destruction
        virtual ~CRmColorWheel();

        // ClassWizard generated virtual function overrides
        //{{AFX_VIRTUAL(CRmColorWheel)
        //}}AFX_VIRTUAL

protected: // Protected member functions

   POINT MapColorToPosition(  float r, float g, float b, int radius );
   void  MapPositionToColor(  int x, int y, int radius,
                              float *r, float *g, float *b );

   void  HSVtoRGB(   float *r, float *g, float *b,
                     float h, float s, float v );

   void  SetColorFromPoint( CPoint *pPoint );

        //{{AFX_MSG(CRmColorWheel)
        afx_msg void OnPaint();
        afx_msg void OnMouseMove(UINT nFlags, CPoint point);
        afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
        afx_msg void OnLButtonUp(UINT nFlags, CPoint point);
   afx_msg LRESULT OnColorChanged( WPARAM wParam, LPARAM lParam );
   afx_msg void OnCaptureChanged(CWnd *pWnd);
        //}}AFX_MSG

        DECLARE_MESSAGE_MAP()

public: // Public member variables

   float *m_pfColorArray;
   
private: // Private member variables

   bool     m_bLButtonDown;
   CPoint   m_point;
   int      m_nChangeMessageIndex;
   
};// end class RMMFCUTIL_API CRmColorWheel : public CWnd

#endif // !#define RMMFC_CCOLORWHEEL_DEFINE

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