cashier.c

在LINUX下实现的一个超市的收银系统

#include "extern.h"
#include "struct.h"

/*=========销售函数=========*/
void Cashier()
{		
	char buf[20];
	int ch,temp;
	int scroll_no;
	
	InitLink();

	struct Sell *buffer;
	scroll_no=1;
	//获取系统时间
	time_t currTime;
	struct tm *tblock;

	currTime=time(NULL);
	tblock=localtime(&currTime);
	strftime(System_Time, sizeof("[2008-08-08 00:00:00]"), "%Y%m%d%H%M%S", tblock );
	  	
    sell_main_win = newwin(25,80,0,0);
	WINDOW * win = sell_main_win;

    wbkgd(win,COLOR_PAIR(6));
    wattron(win,COLOR_PAIR(6));
	//打印出主销售窗口
    box(win,0,0);
    mvwprintw(win,0,30,"欢迎光临沃尔玛超市");

    mvwprintw(win,1,1,"收银员:");
	mvwprintw(win,1,9,"%s",EMP_NAME);	
    mvwprintw(win,1,18,"等级:");
	if(3 == EMP_GRADE)
	{
		mvwprintw(win,1,24,"中级职员");
	}
	else if(2 == EMP_GRADE)
	{
		mvwprintw(win,1,24,"高级职员");
	}
	else
	{
		mvwprintw(win,1,24,"低级职员");
	}
	//打印交易号
	mvwprintw(win,1,36,"交易号:%s",BUSINESS_NO);
	
	//打印系统时间
    mvwprintw(win,1,54,"时间:%s",System_Time);
    mvwhline(win,2,1,0,78);
	
    mvwprintw(win,3,1,"序号     条形码     商品名称             规格   单位   单价   数量   金额");

    mvwhline(win,4,1,0,78);
    mvwhline(win,20,1,0,78);
    mvwprintw(win,21,1,"条形码:");
    mvwprintw(win,21,55,"销售状态:");

    mvwhline(win,22,1,0,78);
    mvwprintw(win,23,1,"F2:新增明细 F3:删除明细 F4:收银 F5:挂单 F6:取单 F7:撤单 F8:退货 F9:退出");

    wrefresh(win);

	//打印输入条形码窗口
	WINDOW *input_win = subwin(win,1,20,21,9);
	wbkgd(input_win,COLOR_PAIR(5));	

	//打印详细销售信息窗口
	sellinfo_win = subwin(win,15,78,5,1);
	wbkgd(sellinfo_win,COLOR_PAIR(6));
    wattron(sellinfo_win,COLOR_PAIR(6));
	touchwin(win);
    wrefresh(sellinfo_win);
	scrollok(sellinfo_win,1);
	
	//要求输入条形码
	keypad(input_win,TRUE);
	echo();
	temp=0;

	do
	{
		ch = mvwgetch(input_win,0,0+temp);
    
		if((isprint(ch)) && (!isspace(ch)))
		{
			BAR_CODE[temp] = ch;
			temp++;
			if(temp >=19)
			{
				temp=19;
			}
		}

		//用户确定后,查询有没有商品存在
		if(ch == '\n')
		{
			keypad(input_win,FALSE);
			BAR_CODE[temp] = '\0';

			//判断是否有相同的商品,如果有,数量+1,金额=数量*单价
			buffer = IsTheSameMer(BAR_CODE);
			if(buffer != NULL)
			{
				buffer->mer_amount = buffer->mer_amount+1;
				buffer->total_money = buffer->mer_amount * buffer->sell_price;

				PrintSellInfo();
	
				SELL_STATE = 1;
				mvwprintw(win,21,65,"正常");
				
				touchwin(win);
				wrefresh(win);
				wrefresh(input_win);
				wrefresh(sellinfo_win);

				wclrtoeol(input_win);//清除输入的条形码数据
				temp=0;
				memset(BAR_CODE,0,sizeof(BAR_CODE));
				keypad(input_win,TRUE);
				continue;
			}
			//如果返回1,打印商品信息
			if(SearchBarCode(BAR_CODE,MER_NAME,MER_UNIT,MER_SPEC,&MER_PRICE,&MER_STOCK))
			{
				MER_AMOUNT = 1;
				TOTAL_MONEY = MER_PRICE * MER_AMOUNT;
				//如果大于15行，滚屏
				if(scroll_no>15)
				{
					scroll(sellinfo_win);
					scroll_no--;
				}
				//保存数据到结构体	
				InputDateToStruct(BAR_CODE,MER_NAME,MER_UNIT,MER_SPEC,MER_PRICE,MER_AMOUNT,TOTAL_MONEY);				
				
				PrintSellInfo();//调用打印信息函数
				
				SELL_STATE = 1;
				mvwprintw(win,21,65,"正常");
				
				touchwin(win);
				wrefresh(win);
				wrefresh(input_win);
				wrefresh(sellinfo_win);
							
				wclrtoeol(input_win);//清除输入的条形码数据
				temp=0;
				memset(BAR_CODE,0,sizeof(BAR_CODE));
				keypad(input_win,TRUE);
				scroll_no++;
				
				continue;
			}
			//跳出提示,商品不存在
			else
			{
				ShowMessage("       商品不存在,请重新输入");
				wclrtoeol(input_win);//清除输入的条形码数据
				temp=0;
				memset(BAR_CODE,0,sizeof(BAR_CODE));

				keypad(input_win,TRUE);
				touchwin(win);
				wrefresh(win);
				continue;
			}
		}

		else if(ch == KEY_BACKSPACE)
		{
			if(temp > 0)
			{
				--temp;
				wmove(input_win,0,0+temp);
				wclrtoeol(input_win);
			}
			else
			{
				wmove(input_win,0,0);
				wclrtoeol(input_win);
			}
		}
		//输入F2,新增明细,AddDetail()
		if(ch == KEY_F(2))
		{
			AddDetail();
			
			SELL_STATE = 1;
			mvwprintw(win,21,65,"正常");
				
			touchwin(win);
			wrefresh(win);
			wrefresh(input_win);
			wrefresh(sellinfo_win);
							
			wclrtoeol(input_win);//清除输入的条形码数据
			temp=0;
			memset(BAR_CODE,0,sizeof(BAR_CODE));
			keypad(input_win,TRUE);
			scroll_no++;
				
			continue;
		}
		//输入F3,删除明细
		if(ch == KEY_F(3))
		{
			DelDetail();
		}
		//输入F4,收银
		if(ch == KEY_F(4))
		{
			GetMoney();
			continue;
		}
		//输入F5,挂单
		if(ch == KEY_F(5))
		{
			Hang_List();//挂单
		}
		//输入F6,取单
		if(ch == KEY_F(6))
		{	

			Take_List();//取单

		}
		//输入F7,撤单
		if(ch == KEY_F(7))
		{
			CancelOrder();
		}
		//输入F8,退货
		if(ch == KEY_F(8))
		{
			Good_Return();
		}
		//输入F9,退出
		if(ch == KEY_F(9))
		{
			//判断是否有挂单,如果有的话,不允许退出
			if(1 == Hang_List_State)
			{
				ShowMessage("     还有单号没有结账,不允许退出");
				touchwin(sell_main_win);
				wrefresh(sell_main_win);
				continue;
			}
			if(1 == SELL_STATE)
			{
				ShowMessage("     还有单号没有结账,不允许退出");
				touchwin(sell_main_win);
				wrefresh(sell_main_win);
				continue;
			}
			//退出系统
			wclear(win);
			wrefresh(win);
			ShowMessage("             正在退出......");
			delwin(win);
			endwin();
			exit(0);			
		}

		else
		{
			continue;
		}

	}while(1);
		
	noecho();
    endwin();
    exit(0);
}