www.pudn.com > UCGUI390a.rar > LCDP8666_1.c

/* 
********************************************************************************************************* 
*                                                uC/GUI 
*                        Universal graphic software for embedded applications 
* 
*                       (c) Copyright 2002, Micrium Inc., Weston, FL 
*                       (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH 
* 
*              µC/GUI is protected by international copyright laws. Knowledge of the 
*              source code may not be used to write a similar product. This file may 
*              only be used in accordance with a license and should not be redistributed 
*              in any way. We appreciate your understanding and fairness. 
* 
---------------------------------------------------------------------- 
File        : LCDP8666_1.C 
Purpose     : Color conversion routines for 86661 mode 
---------------------------END-OF-HEADER------------------------------ 
*/ 
 
#include "LCD_Protected.h"    /* inter modul definitions */ 
 
/********************************************************************* 
* 
*       Public code, 
* 
********************************************************************** 
*/ 
/********************************************************************* 
* 
*       LCD_Color2Index_8666_1 
*/ 
unsigned LCD_Color2Index_8666_1(LCD_COLOR Color) { 
  int r, g, b, Index; 
  r = Color & 255; 
  g = (Color >> 8) & 255; 
  b = Color >> 16; 
/* Check if image is a gray scale ... */ 
	if ((r == g) && (g == b)) { 
    return 120 + (r + 8) / 17;  /* Convert into colors from 120 - 135 */ 
	} 
/* Convert into the 6*6*6 colors ... */ 
  r = (r * 5 + 127) / 255; 
  g = (g * 5 + 127) / 255; 
  b = (b * 5 + 127) / 255; 
  Index = r + 6 * g + 36 * b; 
  return (Index < 108) ? Index + 12 : Index + 28; 
} 
 
/********************************************************************* 
* 
*       LCD_Index2Color_8666_1 
*/ 
LCD_COLOR LCD_Index2Color_8666_1(int Index) { 
  unsigned int r,g; 
  U32 b; 
  /* 16 Gray scale range ? */ 
  if ((Index >= 120) && (Index < 136)) { 
    return (U32)0x111111 * (U32)(Index - 120); 
	} 
  if ((Index < 12) || (Index > 243)) { 
    return 0;  /* Black for illegal indices */ 
  } 
  if (Index >= 120) { 
    Index -= 28; 
  } else { 
    Index -= 12; 
  } 
  r = (Index % 6) * (255 / 5); 
  g = ((Index / 6) % 6) * (255 / 5); 
  b = (Index / 36) * (255 / 5); 
  return r + (g << 8) + ((U32)b << 16); 
} 
 
/********************************************************************* 
* 
*       LCD_GetIndexMask_8666_1 
*/ 
unsigned LCD_GetIndexMask_8666_1(void) { 
  return 0xff; 
} 
 
/*************************** End of file ****************************/