/********************************************************************************
 * File Name:			Radio.c
 * Function Describe:	select button
 * Relate Module:		lcd.c,lcd.h,Key.c,Key.h,Radio.h
 * Explain:
 * Writer:				LiuYanZhi
 * Date:				2003-12-14
 * Rewriter:
 * Date:		
 *******************************************************************************/
#include <string.h>
#include "lcd.h"
#include "KeyLed.h"
#include "Radio.h"

void RadioShowItem(struct SUT_RADIO *p,unsigned char handle);
void RadioShowBlock(struct SUT_RADIO *p,unsigned char handle);
/********************************************************************************
 * Function:RadioInit
 * initialize Radio struct
 *******************************************************************************/
void RadioInit
(
	struct SUT_RADIO *p,
	unsigned short x,
	unsigned char y,
	char **item,
	unsigned char rows
)
{
	unsigned char i,j;

	p->x = x;
	p->y = y;
	p->item = item;
	p->rows = rows;
	i = 0;									//get width and itemnum
	p->width = 0;
	for(;;)
	{
		j = strlen(p->item[i]);
		if(j == 0)break;
		if(j > p->width)p->width = j;
		i ++;
	}
	p->itemnum = i;
	p->width += 4;
	if(p->handle >= p->itemnum)
		p->handle = 0;
}

/********************************************************************************
 * Function:RadioShow
 * display Radio
 *******************************************************************************/
void RadioShow(struct SUT_RADIO *p)
{
	unsigned char i;

	for(i = 0 ; i < p->itemnum ; i ++)
	{
		RadioShowItem(p,i);
		if(i == p->handle)RadioShowBlock(p,i);
	}
}

/********************************************************************************
 * Function:RadioShowItem
 * display Radio item
 *******************************************************************************/
void RadioShowItem(struct SUT_RADIO *p,unsigned char handle)
{
	unsigned short x;
	unsigned char y;

	x = handle / p->rows;
	x *= p->width * 8;
	x += ((p->x) >> 3) * 8;
	y = handle % p->rows;
	y *= 24;
	y += p->y;
	LcdShowRect(x,y+1,x+12,y+13,0x01);
	LcdShowStr(x+24,y,p->item[handle],0x01);
}


/********************************************************************************
 * Function:RadioShowBlock
 * display Radio item select flag
 *******************************************************************************/
void RadioShowBlock(struct SUT_RADIO *p,unsigned char handle)
{
	unsigned short x;
	unsigned char y;
	unsigned char i;

	x = handle / p->rows;
	x *= p->width * 8;
	x += ((p->x) >> 3) * 8 + 2;
	y = handle % p->rows;
	y *= 24;
	y += p->y + 3;

	for(i = 0 ; i < 9 ; i ++)
	{
		LcdShowRect(x,y+i,x+8,y+i,0x01);
	}
}

/********************************************************************************
 * Function:RadioGetHandle
 *******************************************************************************/
unsigned char RadioGetHandle(struct SUT_RADIO *p)
{
	return p->handle;
}

/********************************************************************************
 * Function:RadioResponse
 *******************************************************************************/
unsigned char RadioResponse(struct SUT_RADIO *p)
{
	switch(g_ucKeyValue)
	{
		case KEY_UP:
			RadioShowBlock(p,p->handle);
			if(p->handle <= 0)p->handle = p->itemnum - 1;
			else p->handle --;
			RadioShowBlock(p,p->handle);
			break;
		case KEY_DOWN:
			RadioShowBlock(p,p->handle);
			p->handle ++;
			if(p->handle >= p-> itemnum)p->handle = 0;
			RadioShowBlock(p,p->handle);
			break;
		case KEY_LEFT:
			if(p->handle < p->rows)break;
			RadioShowBlock(p,p->handle);
			p->handle -= p->rows;
			RadioShowBlock(p,p->handle);			
			break;
		case KEY_RIGHT:
			if((p->handle + p->rows) >= p->itemnum)break;
			RadioShowBlock(p,p->handle);
			p->handle += p->rows;
			RadioShowBlock(p,p->handle);			
			break;
		case KEY_BACK:
			return 1;
		case KEY_ENTER:
			return 2;
		default:
			break;
	}
	return 0;	
}


/********************************************************************************
 *                            End of Module
 *******************************************************************************/