CDesktop.h

/**********************************************************************
Copyright (c) 2005, TomTom B.V.
All rights reserved
***********************************************************************/

// CDesktop.h: interface for the CDesktop class.
//

#ifndef __CDESKTOP_H__
#define __CDESKTOP_H__

#include <assert.h>

#include "MFrameBuffer.h" 

class CDesktop  
{
 public:        
  typedef unsigned int TColor; 
 public:
  static TColor GetNearestColor( unsigned int aR, unsigned int aG, unsigned int aB );

  static void   PutPixel( MFrameBuffer& aFrameBuffer, unsigned int aX, unsigned int aY, TColor aColor );

  static TColor GetPixel( MFrameBuffer& aFrameBuffer, unsigned int aX, unsigned int aY );

  static void   HLine( MFrameBuffer& aFrameBuffer, unsigned int aXFrom, unsigned int aY, unsigned int aXTo, TColor aColor );

  static void   VLine( MFrameBuffer& aFrameBuffer, unsigned int aX, unsigned int aYFrom, unsigned int aYTo, TColor aColor );

  static void   Line( MFrameBuffer& aFrameBuffer, unsigned int aXFrom, unsigned int aYFrom, unsigned int aXTo,unsigned int aYTo, TColor aColor );

  static void   Rect( MFrameBuffer& aFrameBuffer, unsigned int aXFrom, unsigned int aYFrom, unsigned int aXTo, unsigned int aYTo, TColor aColor);

  static void   RectFill( MFrameBuffer& aFrameBuffer, unsigned int aXFrom, unsigned int aYFrom, unsigned int aXTo, unsigned int aYTo, TColor aColor, unsigned int aRounding );


  static const TColor ColorBlack;
  static const TColor ColorWhite;
  static const TColor ColorLightGray;
  static const TColor ColorDarkGray;
  static const TColor ColorYellow;
  static const TColor ColorVeryLightBlue;
  static const TColor ColorLightBlue;
  static const TColor ColorCyan;
  static const TColor ColorRed;
  static const TColor ColorGreen;
  static const TColor ColorBrown;
  static const TColor ColorLightGreen;
  static const TColor ColorBlue;
  static const TColor ColorPink;
  static const TColor ColorDarkPink;
  static const TColor ColorOrange;

 private:
  CDesktop();
  CDesktop( const CDesktop& );
  CDesktop& operator=( CDesktop& );

 private:
  static char* GetPixelAddress( MFrameBuffer& aFrameBuffer, unsigned int aX,unsigned int aY );
};


inline char* CDesktop::GetPixelAddress( MFrameBuffer& aFrameBuffer, unsigned int aX,unsigned int aY )
{
/* assert( aX < aFrameBuffer.GetWidth() );
  assert( aY < aFrameBuffer.GetHeight() );
*/
 return aFrameBuffer.GetScreenBuffer() + aFrameBuffer.GetPixelAddressOffset( aX, aY );
}

inline void CDesktop::PutPixel( MFrameBuffer& aFrameBuffer, unsigned int aX,unsigned int aY, CDesktop::TColor aColor )
{
  /* assert( aX < aFrameBuffer.GetWidth() );
     assert( aY < aFrameBuffer.GetHeight() );
     assert( aFrameBuffer.GetBitsPerPixel() == 16 ); // Currently only support for 16 bpp
   */
  if (aX < aFrameBuffer.GetWidth() && aY < aFrameBuffer.GetHeight() )
  {
    *reinterpret_cast< unsigned short *>( GetPixelAddress( aFrameBuffer, aX, aY ) ) =
      static_cast< unsigned short >( aColor ); 
  }
}


inline CDesktop::TColor CDesktop::GetPixel( MFrameBuffer& aFrameBuffer, unsigned int aX,unsigned int aY )
{
/* assert( aX < aFrameBuffer.GetWidth() );
 assert( aY < aFrameBuffer.GetHeight() );
 assert( aFrameBuffer.GetBitsPerPixel() == 16 ); // Currently only support for 16 bpp
*/
 return 
  *reinterpret_cast< unsigned short *>( GetPixelAddress( aFrameBuffer, aX, aY ) );
}


inline CDesktop::TColor CDesktop::GetNearestColor( unsigned int aR, unsigned int aG, unsigned int aB )
{
 // Currently only support for 16 bpp
 //return ( ( TColor )( ( ( aB ) >> 3 ) + ( ( ( aG ) >> 2) * 32 ) + ( ( ( aR ) >> 3 ) * 2048 ) ) );
 return ( ( aR & 0xF8 ) << 8 ) | 
            ( ( aG & 0xFC ) << 3 ) |
                ( ( aB & 0xF8 ) >> 3 );
}

#endif // __CDESKTOP_H__

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