f_mainmenu.c

《unix/Linux下的Curses库开发指南》综合示例程序

    {
	itemnum=num;
        for(i=0;i<num;++i)
        {
	    SubMenuItem[i]=(char*)malloc(20*sizeof(char*));
	    strcpy(SubMenuItem[i],headitem->item_name);
	    headitem=headitem->next;
	}
	SubMenuItem[i]=(char*)0;
        MenuItem=(ITEM**)malloc(10*sizeof(ITEM*));
        for(i=0;i<num+1;++i)
            MenuItem[i]=new_item(SubMenuItem[i],"");
        Menu=new_menu((ITEM**)MenuItem);
        menu_opts_off(Menu,O_NONCYCLIC);
        scale_menu(Menu,&rows,&cols);

        SubMenuWin=newwin(rows+2,cols+3,Global_MenuConf->begin_y,Global_MenuConf->begin_x);

        keypad(SubMenuWin,TRUE);
        box(SubMenuWin,0,0);
	set_current_item(Menu,MenuItem[current_id]);
        set_menu_mark(Menu," ");
        set_menu_win(Menu,SubMenuWin);
        set_menu_sub(Menu,derwin(SubMenuWin,rows,cols,1,1));

	touchwin(SubMenuWin);
        refresh();
        post_menu(Menu);
        wrefresh(SubMenuWin);
        return Menu;
    }
    else return NULL;
}
/*在子菜单menu上接受响应*/
void ResponseToSelect(MENU* menu)
{
    WINDOW* win;
    int done=FALSE,c;
    win=menu_win(menu);
    while(!done){
        switch(menu_driver(menu,c=GetMenuRequest(win))){
            case E_OK:
                break;
            case E_UNKNOWN_COMMAND:
                done=MyMenuDriver(menu,c);
                break;
            default:
                break;
         }
    }
}
int MyMenuDriver(MENU* menu,int c)
{
    int i;
    switch(c){
        case QUIT:
            return TRUE;
            break;
        case ERASEMENU://如果是ESC键,则清除窗口menu.
	    //没有上级菜单
	    if(Global_MenuConf->prev_code==-1)
	    {
	        clear();
	        endwin();	
	    }
	    else
	    {
		/*切换到上一级的菜单配置*/
		ChangeToUp();
	        EraseMenu(menu);
	        /*绘制主菜单,绘制后将第0项置为焦点项*/
		menulevel--; 
		menuarray[menulevel+1]=-1;
		if(menuno==0)
		{
		    curselected=itemno;
		    RedrawMenuWin(menuarray);
    		    ReceiveInput(MainWin,MenuName,menuarray[0]);
		}
		else
		{
		    curselected=itemno;
		    RedrawMenuWin(menuarray);
                    ResponseToSelect(SubMenu);
		}
	    }
        break;
        case ENTER://如果是ESC键,则清除窗口menu.
            /*判断该菜单项是否有子菜单*/
            if(!strcmp(Global_ItemConf->exec_proc,"0")&&Global_ItemConf->submenu_code!=0)
            {
		ChangeToNext();
                SubMenu=DrawSubMenu(Global_ItemConf,0);
                if(SubMenu==NULL)
                    break;
                else
                {
		    curselected=0;
		    menulevel++;
		    menuarray[menulevel]=0;
		    menuarray[menulevel+1]=-1;
                    ResponseToSelect(SubMenu);
                }
            }
	    /*如果是执行函数或者过程*/
	    else
	    {
		if(strcmp(Global_ItemConf->exec_proc,"ExitApp")==0)
		{
		    ExitApp();
		    exit(0);
		}
		/*如果是解析xml页面*/
		else if(strcmp(Global_ItemConf->exec_proc,"TranEngine")==0)
		{
		    EraseMenu(SubMenu);
		    TranEngine(Global_ItemConf->exec_param,FormWin);
		}
	    }
	    break;
        case MOVETOPREV:
	    ChangeToUp();
	    menulevel--;
            EraseMenu(SubMenu);
	    curselected=(itemno+itemnum-1)%itemnum;
	    menuarray[menulevel]=curselected;
	    menuarray[menulevel+1]=-1;

    	    Global_MenuConf=GetMenuByIndex(menuno);
    	    Global_ItemConf=GetMenuItemByIndex(menuno);
    	    Head_ItemConf=Global_ItemConf;

	    MoveToSpecItem(curselected);
	    RedrawMenuWin(menuarray);
    	    ReceiveInput(MainWin,MenuName,menuarray[0]);
            break;
        case MOVETONEXT:
	    ChangeToUp();
	    menulevel--;
            EraseMenu(SubMenu);
	    curselected=(itemno+1)%itemnum;
	    menuarray[menulevel]=curselected;
	    menuarray[menulevel+1]=-1;

    	    Global_MenuConf=GetMenuByIndex(menuno);
    	    Global_ItemConf=GetMenuItemByIndex(menuno);
    	    Head_ItemConf=Global_ItemConf;

	    MoveToSpecItem(curselected);
	    RedrawMenuWin(menuarray);
    	    ReceiveInput(MainWin,MenuName,menuarray[0]);
            break;
        }
        return FALSE;
}

/*主菜单上接受用户输入,MenuWin为接受输入的窗口,current_id为当前的选中的菜单项*/
void ReceiveInput(WINDOW *MenuWin,char* MenuName[],int current_id)
{
    int i;
    for(;;)
    {
        switch(wgetch(MenuWin)){
            case KEY_RIGHT:
            case ' ':
                //将上一个菜单项正常显示
                wstandend(MenuWin);
                mvwaddstr(MenuWin,0,((current_id)%itemnum)*10+2, \
                    MenuName[(current_id)%itemnum]);
                //将下一个菜单项高亮显示
                wstandout(MenuWin);
                mvwaddstr(MenuWin,0,((current_id+1)%itemnum)*10+2, \
                    MenuName[(current_id+1)%itemnum]);
                wstandend(MenuWin);
                wmove(MenuWin,0,0);
                current_id=(current_id+1)%itemnum;
		curselected=current_id;

		menuarray[menulevel]=curselected;
		menuarray[menulevel+1]=-1;
		MoveToSpecItem(curselected);
                refresh();
                wrefresh(MenuWin);
                break;
            case KEY_LEFT:
                wstandend(MenuWin); 
		mvwaddstr(MenuWin,0,((current_id)%itemnum)*10+2, \
                    MenuName[(current_id)%itemnum]);
                //将下一个菜单项高亮显示
                wstandout(MenuWin);
                mvwaddstr(MenuWin,0,((current_id+itemnum-1)%itemnum)*10+2, \
                    MenuName[(current_id+itemnum-1)%itemnum]);
                wstandend(MenuWin);
                wmove(MenuWin,0,0);
                current_id=(current_id+itemnum-1)%itemnum;
		curselected=current_id;
		menuarray[menulevel]=curselected;
		menuarray[menulevel+1]=-1;
		MoveToSpecItem(curselected);
                refresh();
                wrefresh(MenuWin);
                break;
            /*如果是回车键,则弹出请求子菜单*/
	    /*查询current_id的菜单项是否有*/
            case ENTER:
		/*判断该菜单项是否有子菜单*/
		if(!strcmp(Global_ItemConf->exec_proc,"0")&&Global_ItemConf->submenu_code!=0)
		{
           	    /*获取submenu_code指定的下级菜单的配置结构*/
		    ChangeToNext();
	 	    SubMenu=DrawSubMenu(Head_ItemConf,0); 	
		    if(SubMenu==NULL)
			break;
		    else
		    {
			curselected=0;
			menulevel++;
			menuarray[menulevel]=0;
			menuarray[menulevel+1]=-1;
                        ResponseToSelect(SubMenu);
                        break;
                    }
	        }
	    	else
	    	{
		    if(strcmp(Global_ItemConf->exec_proc,"ExitApp")==0)
		    {
		    	ExitApp();
			exit(0);
		    }
		    else if(strcmp(Global_ItemConf->exec_proc,"TranEngine")==0)
		    {
			EraseMenu(SubMenu);
			TranEngine(Global_ItemConf->exec_param,FormWin);
		    }
	    	}
            }
      }
}
/*绘制主菜单,current_id为当前选中的菜单的索引*/
WINDOW* DrawMainMenu(F_MENU_ITEM* headitem,int current_id)
{
    WINDOW* MenuWin;
    int num,i;

    MenuWin = newwin(1,COLS,2,0);
    keypad(MenuWin,TRUE);
    noecho();

    num=GetMenuItemNum(0);/*获取指定的菜单的项数*/
    itemnum=num;
    if(num!=-1)
    {
        wstandend(MenuWin);
	for(i=0;i<num;i++)
	{
            MenuName[i]=(char*)malloc(20*sizeof(char*));
            strcpy(MenuName[i],headitem->item_name);
	    mvwaddstr(MenuWin,0,i*10+2,MenuName[i]);
	    headitem=headitem->next;
        }
        //第一个菜单高亮显示,将第current_id个菜单项加亮显示
        wstandout(MenuWin);
        mvwaddstr(MenuWin,0,((current_id)%num)*10+2,MenuName[(current_id)%num]);
        wstandend(MenuWin);
        wmove(MenuWin,0,0);
        refresh();
        wrefresh(MenuWin);
	/*当主菜单上焦点为current_id时候接受用户输入*/
	menulevel=0;
    }
    return MenuWin;
}
/*按照menuarray中数据重绘菜单*/
void RedrawMenuWin(int MenuArray[])
{
    int i=0;
    menuno=0;
    menulevel=0;
    Global_ItemConf=GetMenuItemByIndex(0);
    Head_ItemConf=Global_ItemConf;
    MainWin=DrawMainMenu(Global_ItemConf,MenuArray[0]);
    MoveToSpecItem(MenuArray[i]);
    i++;
    while(MenuArray[i]!=-1)
    {
	ChangeToNext();
	SubMenu=DrawSubMenu(Head_ItemConf,MenuArray[i]);
    	MoveToSpecItem(MenuArray[i]);
	menulevel++;	
	i++;
    }
}
main()
{
    ScreenInitial();
    DrawBarWin("江苏省邮政储蓄中间业务平台");
    DrawFormWin();
    memset(menuarray,0x0,sizeof(menuarray));
    /*赋值给全局菜单项变量*/
    Global_ItemConf=GetMenuItemByIndex(0);
    Head_ItemConf=Global_ItemConf;
    menuno=0;
    /*绘制主菜单,绘制后将第0项置为焦点项*/
    MainWin=DrawMainMenu(Global_ItemConf,0);
    ReceiveInput(MainWin,MenuName,0);
}