guiencjs.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		: GUIEncSJ.C
Purpose 	: Implementation of Shift JIS decoding
----------------------------------------------------------------------
Version-Date---Author-Explanation
---------------------------END-OF-HEADER------------------------------
*/

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

/*********************************************************************
*
*   	Static code
*
**********************************************************************
*/
/*********************************************************************
*
*   	DB2SJIS
*/
static U16 DB2SJIS(U8 Byte0, U8 Byte1)
{
	return Byte1 | (((U16) Byte0) << 8);
}

/*********************************************************************
*
*   	_GetLineDistX_SJIS
*/
static int _GetLineDistX_SJIS(const char GUI_UNI_PTR *s, int Len)
{
	int Dist = 0;
	if (s)
	{
		U8 c0;
		while (((c0 = *(const U8 *) s) != 0) && Len >= 0)
		{
			s++; Len--;
			if (c0 > 127)
			{
				U8  c1 = *(const U8 *) s++;
				Len--;
				Dist += GUI_GetCharDistX(DB2SJIS(c0, c1));
			}
			else
			{
				Dist += GUI_GetCharDistX(c0);
			}
		}
	}
	return Dist;
}

/*********************************************************************
*
*   	_GetLineLen_SJIS
* Purpose:
*   Returns the number of characters in a string.
*
* NOTE:
*   The return value can be used as offset into the
*   string, which means that double characters count double
*/
static int _GetLineLen_SJIS(const char GUI_UNI_PTR *s, int MaxLen)
{
	int Len = 0;
	U8 c0;
	while (((c0 = *(const U8 *) s) != 0) && Len < MaxLen)
	{
		s++;
		if (c0 > 127)
		{
			Len++; s++;
		}
		else
		{
			switch (c0)
			{
				case '\n':
					return Len;
			}
		}
		Len++;
	}
	return Len;
}

/*********************************************************************
*
*   	_DispLine_SJIS
*/
static void _DispLine_SJIS(const char GUI_UNI_PTR *s, int Len)
{
	U8 c0;
	while (--Len >= 0)
	{
		c0 = *(const U8 *) s++;
		if (c0 > 127)
		{
			U8  c1 = *(const U8 *) s++;
			Len--;
			GL_DispChar(DB2SJIS(c0, c1));
		}
		else
		{
			GL_DispChar(c0);
		}
	}
}

/*********************************************************************
*
*   	GUI_ENC_APIList_SJIS, API list
*/
const tGUI_ENC_APIList GUI_ENC_APIList_SJIS = {
_GetLineDistX_SJIS,
_GetLineLen_SJIS,
_DispLine_SJIS
};

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