help.bak

Unix/Linux文本模式下显示和操作菜单的处理程序。

/*
**
**	联机帮助系统	1998/11
**	
**	说明: 	从HELPFILE读取信息生成联机帮助	
**		
**	
**	
**
*/

#include "apmenu.h"
#define HELPFILE "./HELP"
#define HELPMSG "提示:[End]退出,[Home]菜单,光标移到<<..>>按回车进入该主题"
#define MENUHELPMSG "提示:[BackSpace] 退出一层菜单, [回车] 进行选择          "
#define Y 3
#define X 9
#define WIDTH 60
#define HEIGHT 18

char 	text[500][82];
char 	Nxt_Topic[80];
int 	NREC;
char 	NextTopic[80];
int 	tFlags=0; 

struct 	Help_link {		/*******联机帮助系统主题跳转链表*******/
	char topic[82];
	int ny;
	int nx;
	int nrec;
	int nline;
	int nrow;
	struct Help_link *nxtlink;
	struct Help_link *prvlink;
};
struct Help_link *Link_head,*Link_cur;

/*
**
**	联机帮助系统循环主体
**
*/
int Disp_Help( w, y, x, height, width, topic, bkcolor )	
WINDOW *w; 
int y;
int x; 
int height; 
int width; 
char *topic;
int bkcolor;
{
	int TopicColor,result;
	char topic_bak[80];
	int ny,nx;
	int fontcolor=WHITE,fontbkcolor=BLACK;
	int ch,nrec=0,nline=0,nrow=0,i;
	SAVESCR *scr;
	char mesg[256];
	extern int Initarry();
	extern int Show_arry();
	extern int Do_menu();
	extern int Show_Mainmenu();
	extern int Print_Cur_Topic();
	extern int p();

	ny=y+2;nx=x+2;
	if ( bkcolor != GRAY) bkcolor = GRAY ;
		else bkcolor = YELLOW; 
	TopicColor = BLUE;
	
	scr = (SAVESCR *) Saverect( w, height, width, y, x );

	/*-------------- 进入前分配显示数组 ----------------*/
	if( Initarry ( w, width-4 , topic, HELPFILE )==TRUE ){
		Add_link( topic, ny, nx, nrec, nline, nrow );
	}
	else {
		Free_link();
		return (FALSE);
	}
	/*-------------------- 主题循环 --------------------------------*/
	while( 1 ){	
		/*------------------- 界面 -----------------------------*/
		if ( tFlags == 1 ) 
			wstandout(w);
		wsetcolor( w, BLACK, GRAY  );
		mvwaddstr( w, y, x, "━"); 
		wsetcolor( w, WHITE, BLUE  );
		for( i=x+2;i<x+width;i++) mvwaddstr( w, y, i, " ");
		mvwaddstr( w, y, x+2, topic); 
		wsetcolor( w, BLUE, CYAN  );
		for( i=x+1;i<x+width;i++) mvwaddstr( w, y+1, i, " ");
		for( i=y+1;i<y+height-1;i++)mvwaddstr( w, i, x, "  "); 
		for(i=y+1;i<y+height-1;i++)mvwaddstr(w,i,x+width-2,"  ");
		for(i=x+1;i<x+width-1;i++)mvwaddstr(w,y+height-2,i, " ");
		if ( tFlags == 1 ) 
			wstandend(w);

		Clear( w, height-5, width-4, y+2, x+2, fontbkcolor );
		Show_arry(w, y+2,x+2,height-4, width-4, nrec, 
				fontcolor, fontbkcolor ); 
		wmove( w, ny, nx);
		wrefresh( w );

		/*------------------  键盘循环 -----------------------*/
	   	while ( 1 ){
			ch = (int)getch();
			if ( ch == Key_esc && getch()==91) {
				ch = getch();
				if ( ch == Key_up ){
					if ( nline > 0 ){
						nline --;
						ny=w->_cury-1;
						nx=w->_curx;
					Show_NxtTopic(w,ny,x+2,ny+1,nrec+nline,
						nrec+nline+1,
					     nrow,fontcolor,fontbkcolor);
						wmove(w,ny,nx );
						wrefresh( w );
					}
					else if (nrec !=0){
						nrec --;
					  	Show_arry(w,y+2,x+2,height-4,
						   width-4, nrec,fontcolor,
							fontbkcolor);
					Show_NxtTopic(w,ny,x+2,-1,
						nrec+nline, nrec+nline+1,
					     nrow,fontcolor,fontbkcolor);
						wmove(w,ny,nx );
						wrefresh( w );
						}
				}
				if ( ch == Key_down ) {
					if ( nline < (height -5 ) ){
						nline ++;
						ny=w->_cury+1;
						nx=w->_curx;
					Show_NxtTopic(w,ny,x+2,ny-1,nrec+nline,
						nrec+nline-1,
					     nrow,fontcolor,fontbkcolor);
						wmove(w,ny,nx );
						wrefresh( w );
					}
					else if ( nrec+height-3 < NREC ){
						nrec ++;
						Show_arry(w, y+2,x+2,height-4,
					 	width-4, nrec, fontcolor,
							fontbkcolor ); 
					Show_NxtTopic(w,ny,x+2,ny-1,
						nrec+nline, nrec+nline-1,
					     nrow,fontcolor,fontbkcolor);
						wmove(w,ny,nx );
						wrefresh( w );
					}
				}
				if ( ch == Key_right ) {
					if ( nrow < ( width - 5 ) ){
						nrow ++;
						ny=w->_cury;
						nx=w->_curx+1;
					Show_NxtTopic(w,ny,x+2,ny,nrec+nline,
						nrec+nline,
					     nrow,fontcolor,fontbkcolor);
						wmove(w,ny,nx );
						wrefresh( w );
					}
				}
				if ( ch == Key_left ) {
					if ( nrow >0 ){
						nrow --;
						ny=w->_cury;
						nx=w->_curx-1;
					Show_NxtTopic(w,ny,x+2,ny,nrec+nline,
						nrec+nline,
					     nrow,fontcolor,fontbkcolor);
						wmove(w,ny,nx );
						wrefresh( w );
					}
				}
				if ( ch == Key_pageup ) {
					if ( nrec > height-5 ){
						nrec = nrec - height + 5 ;
						Show_arry(w, y+2,x+2,height-4,
					 	width-4, nrec, fontcolor,
							fontbkcolor ); 
		
					Show_NxtTopic(w,ny,x+2,-1,
						nrec+nline, nrec+height-5+nline,
					     nrow,fontcolor,fontbkcolor);

						wmove(w,ny,nx );
						wrefresh( w );
					}
					else {
						nrec= 0;
						Show_arry(w, y+2,x+2,height-4,
					 	width-4, 0, fontcolor,
							fontbkcolor ); 

					Show_NxtTopic(w,ny,x+2,-1,0+nline,
						nrec+nline,
					     nrow,fontcolor,fontbkcolor);


						wmove(w,ny,nx );
						wrefresh( w );
					}
				}
				if ( ch == Key_pagedown ) {
					if ( nrec+height-3+height-6 < NREC ){
						nrec = nrec + height - 5 ;
						Show_arry(w, y+2,x+2,height-4,
					 	width-4, nrec, fontcolor,
							fontbkcolor ); 
					Show_NxtTopic(w,ny,x+2,-1,nrec+nline,
						nrec-height+5+nline,
					     nrow,fontcolor,fontbkcolor);

						wmove(w,ny,nx );
						wrefresh( w );
					}
					else {
						nrec=NREC-(height-5);	
						if( nrec < 0 ) nrec = 0;
						Show_arry(w, y+2,x+2,height-4,
					 	width-4, nrec, fontcolor,
							fontbkcolor ); 

					Show_NxtTopic(w,ny,x+2,-1,
						nrec+nline, nrec+nline,
					     nrow,fontcolor,fontbkcolor);
						wmove(w,ny,nx );
						wrefresh( w );
					}
				}

				if ( ch==Key_end ) { 
					Free_link();
					return (FALSE);
				}
			}
			if ( ch == Key_tab ) {
				if ( nrow + 9 <= width - 5 ){
					nrow = nrow + 9;
					ny=w->_cury;
					nx=w->_curx+9;
					Show_NxtTopic(w,ny,x+2,ny,nrec+nline,
							nrec+nline,
					     nrow,fontcolor,fontbkcolor);
					wmove(w,ny,nx );
					wrefresh( w );
				}
				else {
					nrow = width-5 ;
					ny=w->_cury;
					nx= width-3+x ;
					Show_NxtTopic(w,ny,x+2,ny,nrec+nline,
							nrec+nline,
					     nrow,fontcolor,fontbkcolor);
					wmove(w,ny,nx );
					wrefresh( w );
				}
			}
			if (ch == Key_backspace ) {
				if ( Link_cur!=Link_head ){
					/**   删除当前链表   **/
					Del_link();

					/** 获取当前链表环境 **/
					strcpy(topic,Link_cur->topic);	
					ny=Link_cur->ny;	
					nx=Link_cur->nx;	
					nrec=Link_cur->nrec;	
					nline=Link_cur->nline;	
					nrow=Link_cur->nrow;	
					Initarry ( w, width-4 , topic, 
						HELPFILE ) ;
					break;
				}
			}
			if (ch == Key_enter) {
				if ( Nxt_Topic[0]!='\x0') { 
					strcpy ( topic_bak, topic );
					strcpy ( topic, Nxt_Topic );
					if( Initarry ( w, width-4 , topic, 
						HELPFILE ) ==TRUE ){
						/** 保存当前的环境 **/
						Link_cur->ny=ny;	
						Link_cur->nx=nx;	
						Link_cur->nrec=nrec;	
						Link_cur->nline=nline;	
						Link_cur->nrow=nrow;	
						/** 设置新的环境  **/
						nrec=0;nline=0;nrow=0;
						ny=y+2;
						nx=x+2;
						Add_link( topic, ny, nx, nrec, 
							nline, nrow );
					}
					else strcpy ( topic, topic_bak );
					break;
				}
			}
			/*** 	当弹出菜单时的循环	***/
			if (ch == Key_home ) {
				if( tFlags != 1){
					wstandout( w );
				  	mvwaddstr( w, Y+HEIGHT-2, X+2, 
						MENUHELPMSG ); 
					wstandend( w );
				}
				else {
					wsetcolor( w, CYAN, GRAY );
				  	mvwaddstr( w, Y+HEIGHT-2, X+2, 
						MENUHELPMSG ); 
				}
				wrefresh(w);
				result=Do_menu(stdscr,y+1,x+2,bkcolor,0);
				if( tFlags != 1){
					wstandout( w );
				  	mvwaddstr( w, Y+HEIGHT-2, X+2, 
						HELPMSG ); 
					wstandend( w );
				}
				else {
					wsetcolor( w, CYAN, GRAY );
				  	mvwaddstr( w, Y+HEIGHT-2, X+2, 
						HELPMSG ); 
				}
				wrefresh(w);
				if ( result ==13) {
					Free_link();
					return FALSE;
				}
				else if(result==11||result==31||result==32) {

					/** 设置新的环境  **/
					strcpy( topic_bak, topic );
					if ( result==11)
						strcpy(topic,"主题");
					else if ( result==31)
						strcpy(topic,"帮助");
					else if ( result==32)
						strcpy(topic,"关于");
					if( Initarry ( w, width-4 ,topic, 
						HELPFILE ) ==TRUE ){
						/** 保存当前的环境 **/
						Link_cur->ny=ny;	
						Link_cur->nx=nx;	
						Link_cur->nrec=nrec;	
						Link_cur->nline=nline;	
						Link_cur->nrow=nrow;	
						nrec=0;nline=0;nrow=0;
						ny=y+2;
						nx=x+2;

						Add_link( topic, ny, nx, nrec, 
							nline, nrow );
					}				
					else strcpy( topic, topic_bak );
					break;
				}
				else if(result==12) {
					if ( Link_cur==Link_head ){
						Message(stdscr,Y+HEIGHT-2,X+2,
							"没有可进入的上个主题",
							"提示:",1);
						wmove( w, ny,nx );
						wrefresh(w);
					}
					else {
						/**   删除当前链表   **/
						Del_link();

						/** 获取当前链表环境 **/
						strcpy(topic,Link_cur->topic);	
						ny=Link_cur->ny;	
						nx=Link_cur->nx;	
						nrec=Link_cur->nrec;	
						nline=Link_cur->nline;	
						nrow=Link_cur->nrow;	
						Initarry ( w, width-4 , topic, 
							HELPFILE ) ;
					break;
					}
				}
				else if(result==21) {
					sprintf(mesg,"打印当前主题,共%d行",
							NREC);
					if(Message(stdscr,Y+HEIGHT-2,X+2,mesg,
						"确认",0) == TRUE ) {
						Print_Cur_Topic(); 
					}
					wmove( w, ny,nx );