guiuc0.c

MCB2300_ucgui_LCD320240.rar LPC2368的uc/gui的移植

/*
*********************************************************************************************************
*   											 uC/GUI
*   					 Universal graphic software for embedded applications
*
*   					(c) Copyright 2002, Micrium Inc., Weston, FL
*   					(c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
*
*   		   礐/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		: GUIUC0.C
Purpose 	: Implementation of character and string services
---------------------------END-OF-HEADER------------------------------
*/

#include <stddef.h> 		  /* needed for definition of NULL */
#include "GUI.h"

/*********************************************************************
*
*   	Public code
*
**********************************************************************
*/
/*********************************************************************
*
*   	GUI_UC2DB
*
* Purpose:
*   Convert Convert UNICODE 16-bit value into double byte version
*   - Byte0: First byte, msb
*   - Byte1: Last  byte, lsb
*/
void GUI_UC2DB(U16 Code, U8 *pOut)
{
	/* move regular ASCII to (unused) 0xE000-0xE0ff area */
	if (Code < 0x100)
	{
		if (Code != 0)  /* end marker ? */
		{
			Code += 0xe000;
		}
	}
	else
	{
		/* If Low byte 0: Move to (unused) 0xE100-0xE1ff area */
		if ((Code & 0xff) == 0)
		{
			Code = (Code >> 8) + 0xe100;
		}
	}
	/* Convert into double byte, putting msb first*/
	*pOut++ = Code >> 8;	 /* Save msb first */
	*pOut = Code & 0xff;
}

/*********************************************************************
*
*   	GUI_DB2UC
*
* Purpose:
*   Convert Unicode double byte into UNICODE.
*   - Byte0: First byte, msb
*   - Byte1: Last  byte, lsb
*/
U16 GUI_DB2UC(U8 Byte0, U8 Byte1)
{
	if (Byte0 == 0)
	{
		return 0;
	}
	if ((Byte0 & 0xfe) == 0xe0)
	{
		if (Byte0 == 0xe0)  	  /* ASCII */
		{
			return Byte1;
		}
		return ((U16) Byte1) << 8;   /* low byte was zero */
	}
	return Byte1 | (((U16) Byte0) << 8);
}

/*************************** End of file ****************************/