/* * This file is part of the OLH system. * * Lucien Van Elsen * MIT Project Athena * * Copyright (C) 1990 by the Massachusetts Institute of Technology. * For copying and distribution information, see the file "mit-copyright.h". * * $Source: /afs/sipb.mit.edu/project/sipb-athena/repository/src/olh/ascii/curses.c,v $ * $Id: curses.c,v 1.6 1992/04/05 17:08:37 probe Exp $ * $Author: probe $ */ #ifndef lint #ifndef SABER static char *RCSid = "$Header: /afs/sipb.mit.edu/project/sipb-athena/repository/src/olh/ascii/curses.c,v 1.6 1992/04/05 17:08:37 probe Exp $"; #endif #endif #include "olh.h" int curses_init( ) { if (initscr() == (WINDOW *)ERR) { fprintf(stderr, "Unable to initialize the curses library.\n"); return FALSE; } if ((LINES < MIN_LINES) || (COLS < MIN_COLS)) { endwin(); printf("\nTo use the On-Line Help service, you need to have a\n"); printf("screen with at least %d columns by %d rows.\n\n", MIN_COLS, MIN_LINES); return FALSE; } max_lines = max(LINES, max_lines); max_cols = max(COLS, max_cols); noecho(); cbreak(); return TRUE; } void curses_shutdown( ) { echo(); nocbreak(); endwin(); } void delete_char_from_buffer( ptr ) char** ptr; { int x, y; if (*ptr <= current_input) { sound_bell(); return; } *ptr = *ptr - 1; getyx(win_prompt, y, x); wmove(win_prompt, y, --x); wclrtoeol(win_prompt); } void sound_bell( ) { printf("\007"); } void OLH_ui_viewer_wait( ) { wait_for_key(win_view_wait); } void wait_for_key( w ) WINDOW* w; { wmove(w, 0, 0); wstandout(w); wprintw(w, "Press any key to continue... "); wstandend(w); wclrtoeol(w); wrefresh(w); wgetch(w); wclear(w); wrefresh(w); } void create_windows( ) { menu_lines = LINES - 12; scr[SCR_PRIM] = (scr_prim = newwin(0, 0, 0, 0)); scr[SCR_VIEW] = (scr_view = newwin(0, 0, 0, 0)); scr[SCR_SUGG] = (scr_sugg = newwin(0, 0, 0, 0)); scount = SCR_MAX; wcount = 0; win[wcount++] = (win_heading = subwin(scr_prim, 1, 0, 0, 0)); win[wcount++] = (win_instr = subwin(scr_prim, 5, 0, 1, 1)); win[wcount++] = (win_label = subwin(scr_prim, 1, 0, 7, 3)); win[wcount++] = (win_entries = subwin(scr_prim, menu_lines, 0, 9, 3)); win[wcount++] = (win_above = subwin(scr_prim, 1, 0, 8, 40)); win[wcount++] = (win_below = subwin(scr_prim, 1, 0, 9+menu_lines, 40)); win[wcount++] = (win_prompt = subwin(scr_prim, 1, 0, LINES-2, 3)); win[wcount++] = (win_message = subwin(scr_prim, 1, 0, LINES-1, 0)); win[wcount++] = (win_view_wait = subwin(scr_view, 1, 0, LINES-1, 0)); win[wcount++] = (win_sugg_wait = subwin(scr_sugg, 1, 0, LINES-1, 0)); } void delete_windows( ) { register int i; for (i = wcount-1; i >= 0; i--) delwin(win[i]); for (i = scount-1; i >= 0; i--) delwin(scr[i]); } void paint_windows( ) { int start_col = (COLS/2) - (strlen(HEADER_TEXT)/2) - 5; wclear(scr_prim); wmove(win_heading, 0, (start_col > 0) ? start_col : 0); waddstr(win_heading, HEADER_TEXT); paint_instructions(); prev_above = FALSE; prev_below = FALSE; paint_menu(); paint_prompt(); paint_message(); paint_sugg(); } void paint_menu( ) { int num; int i; int above; int below; Menu *m; int line; MenuEntry *e; char flag; m = menu[current_menu]; num = size_menu(m) - 1; /* Display the label */ wmove(win_label, 0, 0); waddstr(win_label, field_value(nth_entry(m, 0), NODE_LABEL)); wclrtoeol(win_label); /* Display each item */ for (i = 0; i < menu_lines; i++) { line = current_offset+i+1; wmove(win_entries, i, 0); if (line <= num) { e = nth_entry(m,line); flag = ((doing_keywords)? (!strncasecmp(field_value(e, IN_KEYWORDS), "y", 1)?'*':' '): ((is_menu(e))?'*':' ')); wprintw(win_entries, "%c%3d%c %s", ((line == current[current_menu]) ? '>' : ' '), line, flag, field_value(e, NODE_LABEL)); } wclrtoeol(win_entries); } /* Display "above" message, if necessary */ above = (current_offset > 0); wmove(win_above, 0, 0); if (above && ! prev_above) { if (doing_keywords) waddstr(win_above, "More topics above"); else waddstr(win_above, "More topics above (press 'b')"); } if (! above && prev_above) wclrtoeol(win_above); prev_above = above; /* Display "below" message, if necessary */ below = (current_offset + menu_lines < num); wmove(win_below, 0, 0); if (below && ! prev_below) { if (doing_keywords) waddstr(win_below, "More topics below"); else waddstr(win_below, "More topics below (press SPC)"); } if (! below && prev_below) wclrtoeol(win_below); prev_below = below; } void paint_prompt( ) { wmove(win_prompt, 0, 0); if (current_prompt != NULL) waddstr(win_prompt, current_prompt); if (current_input != NULL) waddstr(win_prompt, current_input); } void paint_message( ) { wmove(win_message, 0, 0); wclrtoeol(win_message); if (current_message != NULL) waddstr(win_message, current_message); } void paint_sugg( ) { wclear(scr_sugg); waddstr(scr_sugg, "Please type your suggestions for improving the On-Line Help service."); wmove(scr_sugg, 1, 0); waddstr(scr_sugg, "Your suggestions will be forwarded to the person responsible for"); wmove(scr_sugg, 2, 0); waddstr(scr_sugg, "maintaining On-Line Help. Your comments are appreciated. Thanks!"); wmove(scr_sugg, 4, 0); waddstr(scr_sugg, "When you are done typing your suggestion, type Ctrl-D or '.' on a line"); wmove(scr_sugg, 5, 0); waddstr(scr_sugg, "by itself."); wmove(scr_sugg, 7, 0); } void paint_bugs( ) { wclear(scr_sugg); waddstr(scr_sugg, "Please type your bug report for the On-Line Help software."); wmove(scr_sugg, 1, 0); waddstr(scr_sugg, "Your bug report will be forwarded to the person responsible for"); wmove(scr_sugg, 2, 0); waddstr(scr_sugg, "maintaining On-Line Help. Thanks for letting us know about any problems!"); wmove(scr_sugg, 4, 0); waddstr(scr_sugg, "When you are done typing your bug report, type Ctrl-D or '.' on a line"); wmove(scr_sugg, 5, 0); waddstr(scr_sugg, "by itself."); wmove(scr_sugg, 7, 0); } void set_current_screen( snumber ) int snumber; { /* Make sure previous screen is fully erased */ touchwin(stdscr); wrefresh(stdscr); wrefresh(curscr); /* Bring up new screen */ current_screen = snumber; touchwin(scr[snumber]); wrefresh(scr[snumber]); /* Special case: Get cursor in right place */ switch (snumber) { case SCR_PRIM: touchwin(win_prompt); wrefresh(win_prompt); break; } }