基于Linux的自助餐厅点餐系统

#include "lcd.h" #include "restrant.h" #include <stdio.h> #include <stdlib.h> int pages=1; /* 构建一个带头商品链表 */ Head * creat_linkedlist() { Head * h = (struct head*)malloc(sizeof(*h)); //创建一个头，并分配对应的空间 h->first =NULL; h->last=NULL; //先罗列商品信息 Shop s[6]={ {"./doufu.bmp", 1,70,0,0,1/*单价*/, 158,351,278,351,NULL,NULL}, {"./niurou.bmp", 1,315,0,0,2/*单价*/, 403,351,523,351,NULL,NULL}, {"./xiaren.bmp", 1,560,0,0,3/*单价*/, 648,351,768,351,NULL,NULL}, {"./xilanhua.bmp", 2,70,0,0,4/*单价*/, 158,351,278,351,NULL,NULL}, {"./kourou.bmp" ,2,315,120,0,5/*单价*/,403,351,523,351,NULL,NULL}, {"./chaorou.bmp" ,2,560,240,0,6/*单价*/,648,351,768,351,NULL,NULL} //..... }; int i = 0; while(i<6) { //往h里面添加结点 Shop * p = malloc(sizeof(*p)); //给商品分配空间 int j = 0; while((*(s[i].name+j))) //一个字母一个字母的赋值 { *(p->name+j) = *(s[i].name+j); j++; } *(p->name+j)= *(s[i].name+j); //把结束标志'\0'拷贝 p->page = s[i].page; p->x_idex = s[i].x_idex;//图片起始位置 p->y_idex = s[i].y_idex; p->num = s[i].num; //商品的起始购买数量(0) p->price = s[i].price; p->price_x_idex = s[i].price_x_idex;//显示单价的价格 p->price_y_idex = s[i].price_y_idex; p->num_x_idex = s[i].num_x_idex;//显示单个商品数目的位置 p->num_y_idex = s[i].num_y_idex; //p->price_x_idex = s[i].price_x_idex; //p->price_y_idex = s[i].price_y_idex; p->next = s[i].next; p->prev = s[i].prev; //.... if(h->first == NULL) //从无到有 { h->first=p; h->last=p; } else //从少到多，尾插 { h->last->next = p; p->prev = h->last; h->last = p; } i++; } return h; } /* 打印链表 */ void print_linkedlist(Head * h) { Shop * p = h->first; while(p) { printf("%s-----%d\n",p->name,p->price); p = p->next; } } void original_picture(void) { //加号 lcd_draw_bmppicture(70, 340, "./jia.bmp"); lcd_draw_bmppicture(315, 340, "./jia.bmp"); lcd_draw_bmppicture(560, 340, "./jia.bmp"); //显示- lcd_draw_bmppicture(270,340, "./jian.bmp"); lcd_draw_bmppicture(515, 340, "./jian.bmp"); lcd_draw_bmppicture(760, 340, "./jian.bmp"); //显示左右页 lcd_draw_bmppicture(0, 410, "./zuo.bmp"); lcd_draw_bmppicture(730, 410, "./you.bmp"); //显示结算 //lcd_draw_bmppicture(500, 360, "./jiesuan.bmp"); //主题 lcd_draw_bmppicture(4, 0, "./canting.bmp"); //单价 lcd_draw_bmppicture(70, 340, "./danjia.bmp"); lcd_draw_bmppicture(315, 340, "./danjia.bmp"); lcd_draw_bmppicture(560, 340, "./danjia.bmp"); //logo //lcd_draw_bmppicture(0, 360, "./logo.bmp"); //数目 lcd_draw_bmppicture(190, 340, "./shumu.bmp"); lcd_draw_bmppicture(435, 340, "./shumu.bmp"); lcd_draw_bmppicture(680, 340, "./shumu.bmp"); } void page_init(Head * h) { pages = 1; //初始化固定的图片 original_picture(); //先显示第一页的商品 Shop * p = h->first; while(p->page ==1)//打印第一页 { //printf("%d",123); //printf("restrant.c void page_init line 100 loop %d\n",loop_times); lcd_draw_bmppicture(p->x_idex, p->y_idex, p->name);//显示商品名称 //printf("restrant.c void page_init line 102 loop %d\n",loop_times); lcd_draw_number(p->price_x_idex, p->price_y_idex, p->price/*初始购买数量*/, 0x00000000);//显示商品单价 //printf("restrant.c void page_init line 104 loop %d\n",loop_times); lcd_draw_number(p->num_x_idex, p->num_y_idex, p->num/*初始购买数量*/, 0x00ffffff);//显示商品数量 //printf("restrant.c void page_init line 103 loop %d\n",loop_times++); p = p->next; } } void updata_pages(Head * h) { /* 更新数量区域 */ plcd_clear(250, 310, 340, 410, 0x006B8E23); plcd_clear(495, 555, 340, 410, 0x006B8E23); plcd_clear(740, 800, 340, 410, 0x006B8E23); /*更新单价区域 */ plcd_clear(130, 190, 340, 410, 0x006B8E23); plcd_clear(375, 435, 340, 410, 0x006B8E23); plcd_clear(610, 680, 340, 410, 0x006B8E23); Shop * p = h->first; while(p) //遍历整个链表，更新图片和购买数量 { if(p->page == pages) //当前页商品 { lcd_draw_bmppicture(p->x_idex, p->y_idex, p->name);//显示商品名称 lcd_draw_number(p->price_x_idex, p->price_y_idex, p->price, 0x00000000);//显示商品单价 lcd_draw_number(p->num_x_idex, p->num_y_idex, p->num/*初始购买数量*/, 0x007F00FF);//显示商品数量 } p=p->next; } } void get_touchoscreen_add(int x , int y , Head *h) { x = x * 0.8; y = y * 0.8; Shop * p = h->first; while(p) //遍历整个链表 { if(p->page == pages) //当前页商品 { if( x > p->x_idex && x < p->x_idex + 40 && y > p->y_idex +300 && y < p->y_idex + 340) { p->num++; updata_pages(h); } } p=p->next; } } void get_touchoscreen_minus(int x , int y , Head *h) { x = x * 0.8; y = y * 0.8; Shop * p = h->first; while(p) //遍历整个链表 { if(p->page == pages) //当前页商品 { // printf("%d----%d\n",x,y); if( x > p->x_idex + 200 && x < p->x_idex + 240 && y > p->y_idex +300 && y < p->y_idex + 340 && p->num != 0) { p->num--; updata_pages(h); // printf("%d----%d----%d\n",p->x_idex ,p->y_idex,p->num); } } p=p->next; } } void get_touchoscreen_next(int x , int y , Head *h) { x = x * 0.8; y = y * 0.8; Shop * p = h->first; if( x > 730 && x < 800 && y > 410 && y <480) { pages++; while(p) //遍历整个链表 { if(p->page == pages) //当前页商品 { updata_pages(h); } p=p->next; } } } void get_touchoscreen_prev(int x , int y , Head *h) { x = x * 0.8; y = y * 0.8; Shop * p = h->first; if( x > 0 && x < 70 && y > 410 && y <480 && pages >=2 ) { pages--; while(p) //遍历整个链表 { if(p->page == pages) //当前页商品 { updata_pages(h); } p=p->next; } } } int get_touchoscreen_account(int x , int y , Head *h) { x = x * 0.8; y = y * 0.8; int account=0; Shop * p = h->first; if( x > 720 && x < 800 && y > 360 && y <480 ) { while(p) //遍历整个链表 { account += p->price * p->num; /* 更新合计区域 */ plcd_clear(640, 720, 360, 460, 0x00c3c3c3); lcd_draw_number(690, 390, account, 0x00000000); printf("%d\n",account); p=p->next; } } return account; } int get_money(int money) { //自己算出总的价格 return money; }