RmMFCNumericEdit.h

//=================================================================================================//
// filename: RmMFCNumericEdit.h                                                                    //
//                                                                                                 //
//           ATI Research, Inc.                                                                    //
//           3D Application Research Group                                                         //
//                                                                                                 //
// description: Declaration for a generic class for a numeric edit box with input error checking   //
//                                                                                                 //
//=================================================================================================//
//   (C) 2004 ATI Research, Inc.  All rights reserved.                                             //
//=================================================================================================//

#ifndef _RM_MFC_UTILITIES_NUMERIC_EDIT_H_
#define _RM_MFC_UTILITIES_NUMERIC_EDIT_H_

#include <MFCUtilities/RmMFCTypes.h>

// These constants are used to set the ranges for sliders (integer and float)
#define MIN_INT        -32767
#define MAX_INT         32767
#define FLT_DEFAULT_MIN 1.175494351e-38f
#define FLT_DEFAULT_MAX 3.402823466e+38f

// Default precision for displaying the number in the numeric edit field
#define CTRL_DEFAULT_PRECISION 5

//=========================================================================//
// A class designed to create an edit field specialized for numeric input. //
// Should be used to override standard MFC edit control.                   //
//=========================================================================//
class RMMFCUTIL_API CRmNumericEdit: public CEdit
{

public:

   // Default Constructor:
        CRmNumericEdit();       
   virtual ~CRmNumericEdit() {};

   // Initialized this control with a given input value, nPrecision indicates how many digits
   // this edit box will display after the decimal point, bSigned controls whether
   // we allow signed values:
        virtual void Init( float fValue = 0.00, int nPrecision = 2, bool bSigned = true );
   
   void SetData( float fValue, int nPrecision, bool bSigned );

        float GetNumericValue();
        void  SetNumericValue( float fValue );

   // Updates the text in the control:
        void UpdateText();

   // Retrieve the text from the edit control and update the value being modified:
   void UpdateValue();

   void SetScientificDisplay( bool bSciDisplay )
   {
      m_bSciFormat = bSciDisplay;
   }

   void SetNumericDisplayType( bool bInteger )
   {
      m_bInteger = bInteger;
   }
   
protected:

        afx_msg void OnRButtonDown(UINT nFlags, CPoint point);
        afx_msg void OnChar(UINT nChar, UINT nRepCnt, UINT nFlags);
        afx_msg void OnSetFocus();
        //afx_msg void OnKillFocus();   
   afx_msg void OnKillFocus(CWnd* pNewWnd);

        DECLARE_MESSAGE_MAP()

protected:

   // Check that the input character is valid (i.e. numeric)
        bool IsValidChar( UINT nChar );

   // Conversion methods:
        float   TextToNumber( const RM_TCHAR *strText );
        RmStringT NumberToText( float fValue );

//----Class data members:
protected:
        
        float    m_fValue;         // Numeric value modified by the numeric edit field
        int              m_nPrecision;     // Number of digits displayed after the decimal point
        bool        m_bSigned;        // Allow negative values? 
        RmStringT m_strText;        // Text displayed in the edit box

   bool      m_bSciFormat;     // A flag to display the number in scientific format or not
   bool      m_bInteger;       // A flag to indicate the window display text type

};


#endif 

---