/********************************************************************************
 * File Name:			Spin.c 
 * Function Describe:	
 * Relate Module:		lcd.c,lcd.h,Key.c,Key.h
 * Explain:
 * Writer:				LiuYanZhi
 * Date:				2003-11-7
 * Rewriter:
 * Date:		
 *******************************************************************************/
#include <string.h>
#include <stdio.h>
#include "lcd.h"
#include "KeyLed.h"
#include "Spin.h"

/********************************************************************************
 * Function:SpinInit
 * initialize spin struct
 *******************************************************************************/
void SpinInit
(
	struct SUT_SPIN *p,
	unsigned short x,
	unsigned char y,
	char **item
)
{
	unsigned char i;

	p->x = x;
	p->y = y;
	p->item = item;
	p->itemnum = 0;
	i = 0;
	p->width = 0;
	for(;;)
	{
		if(strlen(p->item[i]) == 0)break;
		if(strlen(p->item[i]) > p->width)
			p->width = strlen(p->item[i]);
		i++;
		p->itemnum ++;
	}
	p->top = 0;
	p->bottom = p->itemnum - 1;
	if(p->handle < p->top)p->handle = p->top;
	if(p->handle > p->bottom)p->handle = p->bottom;
	p->focus = 0;
	p->disable = 0;
	p->keyflag = 0;
	p->type = 0;
	p->step = 1;
}

/********************************************************************************
 * Function:SpinInitData
 * initialize spin struct to data mode
 *******************************************************************************/
void SpinInitData
(
	struct SUT_SPIN *p,
	unsigned short x,
	unsigned char y,
	unsigned char width,
	short min,
	short max,
	short step,
	char *unit
)
{
	p->x = x;
	p->y = y;
	p->width = width;
	p->top = min;
	p->bottom = max;
	p->unit = unit;
	p->step = step;
	if(p->handle < p->top || p->handle > p->bottom)
		p->handle = p->top;
	p->focus = 0;
	p->disable = 0;
	p->keyflag = 0;
	p->type = 1;
}

/********************************************************************************
 * Function:SpinSetPage
 *******************************************************************************/
void SpinSetRange(struct SUT_SPIN *p,short top,short bottom)
{
	p->top = top;
	p->bottom = bottom;
	if(p->type == 0)
	{
		if(p->top >= p->itemnum)p->top = p->itemnum - 1;
		if(p->bottom >= p->itemnum)p->bottom = p->itemnum - 1;
		if(p->bottom < p->top)p->bottom = p->top;
	}
	if(p->handle < p->top)p->handle = p->top;
	if(p->handle > p->bottom)p->handle = p->bottom;
}

/********************************************************************************
 * Function:SpinSetFocus
 *******************************************************************************/
void SpinSetFocus(struct SUT_SPIN *p)
{
	if(p->disable)return;
	if(p->focus)return;
	p->focus = 1;
	LcdReverseBar(p->x,p->y-1,p->x+(p->width-1)*8,p->y+16);
}
/********************************************************************************
 * Function:SpinLoseFocus
 *******************************************************************************/
void SpinLoseFocus(struct SUT_SPIN *p)
{
	if(p->disable)return;
	if(!p->focus)return;
	p->focus = 0;
	LcdReverseBar(p->x,p->y-1,p->x+(p->width-1)*8,p->y+16);
}

/********************************************************************************
 * Function:SpinShow
 * show spin
 *******************************************************************************/
void SpinShow(struct SUT_SPIN *p)
{
	unsigned char x;
	char buffer[20];

	LcdClearArea(p->x,p->y,p->x+(p->width-1)*8,p->y+16);
	if(p->type == 0)
	{
		if(p->disable)LcdShowStr(p->x,p->y,p->item[p->handle],0x03);
		else LcdShowStr(p->x,p->y,p->item[p->handle],0x01);
		if(p->disable)return;
	}
	else
	{
		sprintf(buffer,"%d",p->handle);
		strcat(buffer,p->unit);
		x = strlen(buffer);
		if(x > p->width)
		{
			x = p->width;
			buffer[x] = 0;
		}
		x = (p->width - x) / 2;
		LcdShowStr(p->x+x*8,p->y,buffer,0x00);	
	}
	if(p->focus)LcdReverseBar(p->x,p->y-1,p->x+(p->width-1)*8,p->y+16);
}

/********************************************************************************
 * Function:SpinShowBorder
 *******************************************************************************/
void SpinShowBorder(struct SUT_SPIN *p)
{
	unsigned short x;
	unsigned char width;

	x = (p->x >> 3) * 8;
	width = p->width * 8;	
	LcdShowRect(x-1,p->y-2,x+width,p->y+17,0x01);
}
/********************************************************************************
 * Function:SpinGetHandle
 * get spin's handle
 *******************************************************************************/
short SpinGetHandle(struct SUT_SPIN *p)
{
	return p->handle;
}

/********************************************************************************
 * Function:SpinResponse
 * spin response
 *******************************************************************************/
unsigned char SpinResponse(struct SUT_SPIN *p)
{
	unsigned char task;	

	if(p->disable)return 0;
	if(!p->focus)return 0;
	task = 0xFF;
	switch(g_ucKeyValue)
	{
		case KEY_UP:
			if(p->keyflag)task = 2;
			else task = 0;
			break;
		case KEY_DOWN:
			if(p->keyflag)task = 3;
			else task = 1;
			break;
		case KEY_LEFT:
			if(p->keyflag)task = 0;
			else task = 2;
			break;
		case KEY_RIGHT:
			if(p->keyflag)task = 1;
			else task = 3;
			break;
		case KEY_BACK:
			return 1;
		case KEY_ENTER:
			return 2;
		default:
			break;
	}
	switch(task)
	{
		case 0:
			LcdReverseBar(p->x,p->y-1,p->x+(p->width-1)*8,p->y+16);
			if((p->handle - p->step) < p->top)p->handle = p->bottom;
			else p->handle -= p->step;
			SpinShow(p);
			break;
		case 1:
			LcdReverseBar(p->x,p->y-1,p->x+(p->width-1)*8,p->y+16);
			if((p->handle + p->step) > p->bottom)p->handle = p->top;
			else p->handle += p->step;
			SpinShow(p);
			break;
		case 2:
			return 3;
		//	break;
		case 3:
			return 4;
			//break;
	}
	return 0;
}

void SpinSetNext(struct SUT_SPIN *p)
{
	LcdReverseBar(p->x,p->y-1,p->x+(p->width-1)*8,p->y+16);
	if(p->handle >= p->bottom)p->handle = p->top;
	else p->handle += p->step;
	SpinShow(p);
}

/********************************************************************************
 *                              End of focus
 *******************************************************************************/