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RScreenUtils.h

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// Copyright 2002 Kenneth Guy,
// 
// You are free to take the source and do as you wish with it.
// However it would be nice if you let me know if the code was useful
// to you and give me an acknowledgement if you use a significant portion
// of the code in an application.
// 
// RScreenUtils.h

#ifndef _RSCREENUTILS_H_
#define _RSCREENUTILS_H_

#include <e32std.h>

class RScreenUtils {
  class TPicture {
  public:
    const TUint16 *iData; 
    TUint32 iXSize; 
    TUint32 iYSize; 
    TUint32 iXPos; 
    TUint32 iYPos; 
  };

  class TBlank {
  public:
    TUint32 iColor; 
    TUint32 iXSize; 
    TUint32 iYSize; 
    TUint32 iXPos; 
    TUint32 iYPos; 
  };

public:
  RScreenUtils();
  TInt Open();
  void Close();

  void Blank(TUint16 aColor);
  void Number(TUint aX,TUint aY,TUint32 aNumber,
              TUint16 aForeColor,TUint16 aBackColor);
  void HexNumber(TUint aX,TUint aY,TUint32 aNumber,
                 TUint16 aForeColor,TUint16 aBackColor);
  TUint16 *ScreenBase();

  void DrawPicture(TPicture &aPicture);
  void BlankArea(TBlank &aBlank);

private:
  TUint32 BCDNumber(TUint32 aNumber);

  static void NumberAsm(TUint16 *aPos,TUint32 aNumber,
                        TUint16 aForeColor,TUint16 aBackColor);
  void BlankAsm(TUint16 aColor);

  void BlankAreaAsm(TBlank *aBlank);
  void DrawPictureAsm(TPicture *aPicture);
private:
  TUint16 *iScreenBase; 
};


#endif

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