/****************************************************************************
 * Copyright (c) 1998 Free Software Foundation, Inc.                        *
 *                                                                          *
 * Permission is hereby granted, free of charge, to any person obtaining a  *
 * copy of this software and associated documentation files (the            *
 * "Software"), to deal in the Software without restriction, including      *
 * without limitation the rights to use, copy, modify, merge, publish,      *
 * distribute, distribute with modifications, sublicense, and/or sell       *
 * copies of the Software, and to permit persons to whom the Software is    *
 * furnished to do so, subject to the following conditions:                 *
 *                                                                          *
 * The above copyright notice and this permission notice shall be included  *
 * in all copies or substantial portions of the Software.                   *
 *                                                                          *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
 *                                                                          *
 * Except as contained in this notice, the name(s) of the above copyright   *
 * holders shall not be used in advertising or otherwise to promote the     *
 * sale, use or other dealings in this Software without prior written       *
 * authorization.                                                           *
 ****************************************************************************/
/****************************************************************************

NAME
   ncurses.c --- ncurses library exerciser

SYNOPSIS
   ncurses

DESCRIPTION
   An interactive test module for the ncurses library.

AUTHOR
   Author: Eric S. Raymond <esr@snark.thyrsus.com> 1993

$Id: ncurses.c,v 1.108 1998/02/28 01:11:47 tom Exp $

***************************************************************************/

#include <test.priv.h>

#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <assert.h>
#include <signal.h>

#if HAVE_LOCALE_H
#include <locale.h>
#endif

#if HAVE_GETTIMEOFDAY
#if HAVE_SYS_TIME_H && HAVE_SYS_TIME_SELECT
#include <sys/time.h>
#endif
#if HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#endif

#if HAVE_PANEL_H
#define USE_LIBPANEL 1
#include <panel.h>
#else
#define USE_LIBPANEL 0
#endif

#if HAVE_MENU_H && HAVE_LIBMENU
#define USE_LIBMENU 1
#include <menu.h>
#else
#define USE_LIBMENU 0
#endif

#if HAVE_FORM_H && HAVE_LIBFORM
#define USE_LIBFORM 1
#include <form.h>
#else
#define USE_LIBFORM 0
#endif

#ifdef NCURSES_VERSION

#ifdef TRACE
static int save_trace = TRACE_ORDINARY|TRACE_CALLS;
extern int _nc_tracing;
#endif

#if !HAVE_NAPMS
#define HAVE_NAPMS 1
#endif

#else

#define mmask_t chtype		/* not specified in XSI */
#define attr_t chtype		/* not specified in XSI */
#define ACS_S3          (acs_map['p'])  /* scan line 3 */
#define ACS_S7          (acs_map['r'])  /* scan line 7 */
#define ACS_LEQUAL      (acs_map['y'])  /* less/equal */
#define ACS_GEQUAL      (acs_map['z'])  /* greater/equal */
#define ACS_PI          (acs_map['{'])  /* Pi */
#define ACS_NEQUAL      (acs_map['|'])  /* not equal */
#define ACS_STERLING    (acs_map['}'])  /* UK pound sign */

#endif

#define P(string)	printw("%s\n", string)
#ifndef CTRL
#define CTRL(x)		((x) & 0x1f)
#endif

#define QUIT		CTRL('Q')
#define ESCAPE		CTRL('[')
#define BLANK		' '		/* this is the background character */

/* The behavior of mvhline, mvvline for negative/zero length is unspecified,
 * though we can rely on negative x/y values to stop the macro.
 */
static void do_h_line(int y, int x, chtype c, int to)
{
	if ((to) > (x))
		mvhline(y, x, c, (to) - (x));
}

static void do_v_line(int y, int x, chtype c, int to)
{
	if ((to) > (y))
		mvvline(y, x, c, (to) - (y));
}

/* Common function to allow ^T to toggle trace-mode in the middle of a test
 * so that trace-files can be made smaller.
 */
static int wGetchar(WINDOW *win)
{
	int c;
#ifdef TRACE
	while ((c = wgetch(win)) == CTRL('T')) {
		if (_nc_tracing) {
			save_trace = _nc_tracing;
			_tracef("TOGGLE-TRACING OFF");
			_nc_tracing = 0;
		} else {
			_nc_tracing = save_trace;
		}
		trace(_nc_tracing);
		if (_nc_tracing)
			_tracef("TOGGLE-TRACING ON");
	}
#else
	c = wgetch(win);
#endif
	return c;
}
#define Getchar() wGetchar(stdscr)

static void Pause(void)
{
	move(LINES - 1, 0);
	addstr("Press any key to continue... ");
	(void) Getchar();
}

static void Cannot(const char *what)
{
	printw("\nThis %s terminal %s\n\n", getenv("TERM"), what);
	Pause();
}

static void ShellOut(bool message)
{
	if (message)
		addstr("Shelling out...");
	def_prog_mode();
	endwin();
	system("sh");
	if (message)
		addstr("returned from shellout.\n");
	refresh();
}

/****************************************************************************
 *
 * Character input test
 *
 ****************************************************************************/

static void getch_test(void)
/* test the keypad feature */
{
char buf[BUFSIZ];
int c;
int incount = 0, firsttime = 0;
bool blocking = TRUE;
int y, x;

    refresh();

#ifdef NCURSES_MOUSE_VERSION
    mousemask(ALL_MOUSE_EVENTS, (mmask_t *)0);
#endif

    (void) printw("Delay in 10ths of a second (<CR> for blocking input)? ");
    echo();
    getstr(buf);
    noecho();
    nonl();

    if (isdigit(buf[0]))
    {
	timeout(atoi(buf) * 100);
	blocking = FALSE;
    }

    c = '?';
    raw();
    for (;;)
    {
	if (firsttime++)
	{
	    printw("Key pressed: %04o ", c);
#ifdef NCURSES_MOUSE_VERSION
	    if (c == KEY_MOUSE)
	    {
		MEVENT	event;

		getmouse(&event);
		printw("KEY_MOUSE, %s\n", _tracemouse(&event));
	    }
	    else
#endif	/* NCURSES_MOUSE_VERSION */
	     if (c >= KEY_MIN)
	    {
		(void) addstr(keyname(c));
		addch('\n');
	    }
	    else if (c > 0x80)
	    {
		int c2 = (c & 0x7f);
		if (isprint(c2))
		    (void) printw("M-%c", c2);
		else
		    (void) printw("M-%s", unctrl(c2));
		addstr(" (high-half character)\n");
	    }
	    else
	    {
		if (isprint(c))
		    (void) printw("%c (ASCII printable character)\n", c);
		else
		    (void) printw("%s (ASCII control character)\n", unctrl(c));
	    }
	    getyx(stdscr, y, x);
	    if (y >= LINES-1)
		move(0,0);
	    clrtoeol();
	}

	if (c == 'g')
	{
	    addstr("getstr test: ");
	    echo(); getstr(buf); noecho();
	    printw("I saw `%s'.\n", buf);
	}
	if (c == 's')
	{
	    ShellOut(TRUE);
	}
	if (c == 'x' || c == 'q' || (c == ERR && blocking))
	    break;
	if (c == '?')
	{
	    addstr("Type any key to see its keypad value.  Also:\n");
	    addstr("g -- triggers a getstr test\n");
	    addstr("s -- shell out\n");
	    addstr("q -- quit\n");
	    addstr("? -- repeats this help message\n");
	}

	while ((c = Getchar()) == ERR)
	    if (!blocking)
		(void) printw("%05d: input timed out\n", incount++);
	    else {
		(void) printw("%05d: input error\n", incount++);
	    	break;
	    }
    }
#ifdef NCURSES_MOUSE_VERSION
    mousemask(0, (mmask_t *)0);
#endif
    timeout(-1);
    erase();
    noraw();
    nl();
    endwin();
}

static int show_attr(int row, int skip, chtype attr, const char *name, bool once)
{
    mvprintw(row, 8, "%s mode:", name);
    mvprintw(row, 24, "|");
    if (skip) printw("%*s", skip, " ");
    if (once)
	attron(attr);
    else
    	attrset(attr);
    addstr("abcde fghij klmno pqrst uvwxy z");
    if (once)
	attroff(attr);
    if (skip) printw("%*s", skip, " ");
    printw("|");
    if (attr != A_NORMAL && !(termattrs() & attr))
	printw(" (N/A)");
    return row + 2;
}

static bool attr_getc(int *skip, int *fg, int *bg)
{
    int ch = Getchar();

    if (isdigit(ch)) {
	*skip = (ch - '0');
	return TRUE;
    } else if (ch == CTRL('L')) {
	touchwin(stdscr);
	touchwin(curscr);
	return TRUE;
    } else if (has_colors()) {
	switch (ch) {
	case 'f': *fg = (*fg + 1); break;
	case 'F': *fg = (*fg - 1); break;
	case 'b': *bg = (*bg + 1); break;
	case 'B': *bg = (*bg - 1); break;
	default:
	    return FALSE;
	}
	if (*fg >= COLORS) *fg = 0;
	if (*fg <  0)      *fg = COLORS - 1;
	if (*bg >= COLORS) *bg = 0;
	if (*bg <  0)      *bg = COLORS - 1;
	return TRUE;
    }
    return FALSE;
}

static void attr_test(void)
/* test text attributes */
{
    int n;
    int skip = tigetnum("xmc");
    int fg = COLOR_WHITE;
    int bg = COLOR_BLACK;
    bool *pairs = (bool *)calloc(COLOR_PAIRS, sizeof(bool));
    pairs[0] = TRUE;

    if (skip < 0)
    	skip = 0;

    n = skip;	/* make it easy */

    do {
	int row = 2;
	int normal = A_NORMAL | BLANK;

	if (has_colors()) {
	    int pair = (fg * COLORS) + bg;
	    if (!pairs[pair]) {
	        init_pair(pair, fg, bg);
		pairs[pair] = TRUE;
	    }
	    normal |= COLOR_PAIR(pair);
	}
	bkgdset(normal);
	erase();

	mvaddstr(0, 20, "Character attribute test display");

	row = show_attr(row, n, A_STANDOUT,  "STANDOUT",  TRUE);
	row = show_attr(row, n, A_REVERSE,   "REVERSE",   TRUE);
	row = show_attr(row, n, A_BOLD,      "BOLD",      TRUE);
	row = show_attr(row, n, A_UNDERLINE, "UNDERLINE", TRUE);
	row = show_attr(row, n, A_DIM,       "DIM",       TRUE);
	row = show_attr(row, n, A_BLINK,     "BLINK",     TRUE);
	row = show_attr(row, n, A_PROTECT,   "PROTECT",   TRUE);
	row = show_attr(row, n, A_INVIS,     "INVISIBLE", TRUE);
	row = show_attr(row, n, A_NORMAL,    "NORMAL",    FALSE);

	mvprintw(row, 8,
	     "This terminal does %shave the magic-cookie glitch",
	     tigetnum("xmc") > -1 ? "" : "not ");
	mvprintw(row+1, 8,
	     "Enter a digit to set gaps on each side of displayed attributes");
	mvprintw(row+2, 8,
	     "^L = repaint");
	if (has_colors())
	    printw(".  f/F/b/F toggle colors (now %d/%d)", fg, bg);

        refresh();
    } while (attr_getc(&n, &fg, &bg));
    bkgdset(A_NORMAL | BLANK);
    erase();
    endwin();
}

/****************************************************************************
 *
 * Color support tests
 *
 ****************************************************************************/

static NCURSES_CONST char *color_names[] =
{
    "black",
    "red",
    "green",
    "yellow",
    "blue",
    "magenta",
    "cyan",
    "white"
};

static void show_color_name(int y, int x, int color)
{
    if (COLORS > 8)
	mvprintw(y, x, "%02d   ", color);
    else
	mvaddstr(y, x, color_names[color]);
}

static void color_test(void)
/* generate a color test pattern */
{
    int i;
    int base, top, width;
    NCURSES_CONST char *hello;

    refresh();
    (void) printw("There are %d color pairs\n", COLOR_PAIRS);

    width = (COLORS > 8) ? 4 : 8;
    hello = (COLORS > 8) ? "Test" : "Hello";

    for (base = 0; base < 2; base++)
    {
	top = (COLORS > 8) ? 0 : base * (COLORS+3);
	clrtobot();
	(void) mvprintw(top + 1, 0,
		"%dx%d matrix of foreground/background colors, bright *%s*\n",
		COLORS, COLORS,
		base ? "on" : "off");
	for (i = 0; i < COLORS; i++)
	    show_color_name(top + 2, (i+1) * width, i);
	for (i = 0; i < COLORS; i++)
	    show_color_name(top + 3 + i, 0, i);
	for (i = 1; i < COLOR_PAIRS; i++)
	{
	    init_pair(i, i % COLORS, i / COLORS);
	    attron((attr_t)COLOR_PAIR(i));
	    if (base)
		attron((attr_t)A_BOLD);
	    mvaddstr(top + 3 + (i / COLORS), (i % COLORS + 1) * width, hello);
	    attrset(A_NORMAL);
	}
	if ((COLORS > 8) || base)
	    Pause();
    }

    erase();
    endwin();
}

static void change_color(int current, int field, int value, int usebase)
{
	short	red, green, blue;

	if (usebase)
		color_content(current, &red, &green, &blue);
	else
		red = green = blue = 0;

	switch (field) {
	case 0:
		red += value;
		break;
	case 1:
		green += value;
		break;
	case 2:
		blue += value;
		break;
	}

	if (init_color(current, red, green, blue) == ERR)
		beep();
}

static void color_edit(void)
/* display the color test pattern, without trying to edit colors */
{
    int	i, this_c = 0, value = 0, current = 0, field = 0;
    int last_c;

    refresh();

    for (i = 0; i < COLORS; i++)
	init_pair(i, COLOR_WHITE, i);

    mvprintw(LINES-2, 0, "Number: %d", value);

    do {
	short	red, green, blue;

	attron(A_BOLD);
	mvaddstr(0, 20, "Color RGB Value Editing");
	attroff(A_BOLD);

	for (i = 0; i < COLORS; i++)
        {
	    mvprintw(2 + i, 0, "%c %-8s:",
		     (i == current ? '>' : ' '),
		     (i < (int) SIZEOF(color_names)
			? color_names[i] : ""));
	    attrset(COLOR_PAIR(i));
	    addstr("        ");
	    attrset(A_NORMAL);

	    /*
	     * Note: this refresh should *not* be necessary!  It works around
	     * a bug in attribute handling that apparently causes the A_NORMAL
	     * attribute sets to interfere with the actual emission of the
	     * color setting somehow.  This needs to be fixed.
	     */
	    refresh();

	    color_content(i, &red, &green, &blue);
	    addstr("   R = ");
	    if (current == i && field == 0) attron(A_STANDOUT);
	    printw("%04d", red);
	    if (current == i && field == 0) attrset(A_NORMAL);
	    addstr(", G = ");
	    if (current == i && field == 1) attron(A_STANDOUT);
	    printw("%04d", green);
	    if (current == i && field == 1) attrset(A_NORMAL);
	    addstr(", B = ");
	    if (current == i && field == 2) attron(A_STANDOUT);
	    printw("%04d", blue);
	    if (current == i && field == 2) attrset(A_NORMAL);
	    attrset(A_NORMAL);
	    addstr(")");
	}

	mvaddstr(COLORS + 3, 0,
	    "Use up/down to select a color, left/right to change fields.");
	mvaddstr(COLORS + 4, 0,
	    "Modify field by typing nnn=, nnn-, or nnn+.  ? for help.");

	move(2 + current, 0);

	last_c = this_c;
	this_c = Getchar();
	if (isdigit(this_c) && !isdigit(last_c))
		value = 0;

	switch (this_c)
	{
	case KEY_UP:
	    current = (current == 0 ? (COLORS - 1) : current - 1);
	    break;

	case KEY_DOWN:
	    current = (current == (COLORS - 1) ? 0 : current + 1);
	    break;

	case KEY_RIGHT:
	    field = (field == 2 ? 0 : field + 1);
	    break;

	case KEY_LEFT:
	    field = (field == 0 ? 2 : field - 1);
	    break;

	case '0': case '1': case '2': case '3': case '4':
	case '5': case '6': case '7': case '8': case '9':
	    value = value * 10 + (this_c - '0');
	    break;

	case '+':
	    change_color(current, field, value, 1);
	    break;

	case '-':
	    change_color(current, field, -value, 1);
	    break;

	case '=':
	    change_color(current, field, value, 0);
	    break;

	case '?':
	    erase();
    P("                      RGB Value Editing Help");
    P("");
    P("You are in the RGB value editor.  Use the arrow keys to select one of");
    P("the fields in one of the RGB triples of the current colors; the one");
    P("currently selected will be reverse-video highlighted.");
    P("");
    P("To change a field, enter the digits of the new value; they are echoed");
    P("as entered.  Finish by typing `='.  The change will take effect instantly.");
    P("To increment or decrement a value, use the same procedure, but finish");
    P("with a `+' or `-'.");
    P("");
    P("To quit, do `x' or 'q'");

	    Pause();
	    erase();
	    break;

	case 'x':
	case 'q':
	    break;

	default:
	    beep();
	    break;
	}
	mvprintw(LINES-2, 0, "Number: %d", value);
	clrtoeol();
    } while
	(this_c != 'x' && this_c != 'q');

    erase();
    endwin();
}

/****************************************************************************
 *
 * Soft-key label test
 *
 ****************************************************************************/

static void slk_test(void)
/* exercise the soft keys */
{
    int	c, fmt = 1;
    char buf[9];

    c = CTRL('l');
    do {
	move(0, 0);
	switch(c)
	{
	case CTRL('l'):
	    erase();
	    attron(A_BOLD);
	    mvaddstr(0, 20, "Soft Key Exerciser");
	    attroff(A_BOLD);

	    move(2, 0);
	    P("Available commands are:");
	    P("");
	    P("^L         -- refresh screen");
	    P("a          -- activate or restore soft keys");
	    P("d          -- disable soft keys");
	    P("c          -- set centered format for labels");
	    P("l          -- set left-justified format for labels");
	    P("r          -- set right-justified format for labels");
	    P("[12345678] -- set label; labels are numbered 1 through 8");
	    P("e          -- erase stdscr (should not erase labels)");
	    P("s          -- test scrolling of shortened screen");
	    P("x, q       -- return to main menu");
	    P("");
	    P("Note: if activating the soft keys causes your terminal to");
	    P("scroll up one line, your terminal auto-scrolls when anything");
	    P("is written to the last screen position.  The ncurses code");
	    P("does not yet handle this gracefully.");
	    refresh();
	    /* fall through */

	case 'a':
	    slk_restore();
	    break;

	case 'e':
	    wclear(stdscr);
	    break;

	case 's':
	    mvprintw(20, 0, "Press Q to stop the scrolling-test: ");
	    while ((c = Getchar()) != 'Q' && (c != ERR))
		addch((chtype)c);
	    break;

	case 'd':
	    slk_clear();
	    break;

	case 'l':
	    fmt = 0;
	    break;

	case 'c':
	    fmt = 1;
	    break;

	case 'r':
	    fmt = 2;
	    break;

	case '1': case '2': case '3': case '4':
	case '5': case '6': case '7': case '8':
	    (void) mvaddstr(20, 0, "Please enter the label value: ");
	    echo();
	    wgetnstr(stdscr, buf, 8);
	    noecho();
	    slk_set((c - '0'), buf, fmt);
	    slk_refresh();
	    move(20, 0); clrtoeol();
	    break;

	case 'x':
	case 'q':
	    goto done;

	default:
	    beep();
	}
    } while
	((c = Getchar()) != EOF);

 done:
    erase();
    endwin();
}

/****************************************************************************
 *
 * Alternate character-set stuff
 *
 ****************************************************************************/

/* ISO 6429:  codes 0x80 to 0x9f may be control characters that cause the
 * terminal to perform functions.  The remaining codes can be graphic.
 */
static void show_upper_chars(int first)
{
	bool C1 = (first == 128);
	int code;
	int last = first + 31;
	int reply;

	erase();
	attron(A_BOLD);
	mvprintw(0, 20, "Display of %s Character Codes %d to %d",
		C1 ? "C1" : "GR", first, last);
	attroff(A_BOLD);
	refresh();

	for (code = first; code <= last; code++) {
		int row = 4 + ((code - first) % 16);
		int col = ((code - first) / 16) * COLS / 2;
		char tmp[80];
		sprintf(tmp, "%3d (0x%x)", code, code);
		mvprintw(row, col, "%*s: ", COLS/4, tmp);
		if (C1)
			nodelay(stdscr, TRUE);
		echochar(code);
		if (C1) {
			/* (yes, this _is_ crude) */
			while ((reply = Getchar()) != ERR) {
				addch(reply);
				napms(10);
			}
			nodelay(stdscr, FALSE);
		}
	}
}

static int show_1_acs(int n, const char *name, chtype code)
{
	const int height = 16;
	int row = 4 + (n % height);
	int col = (n / height) * COLS / 2;
	mvprintw(row, col, "%*s : ", COLS/4, name);
	addch(code);
	return n + 1;
}

static void show_acs_chars(void)
/* display the ACS character set */
{
	int n;

#define BOTH(name) #name, name

	erase();
	attron(A_BOLD);
	mvaddstr(0, 20, "Display of the ACS Character Set");
	attroff(A_BOLD);
	refresh();

	n = show_1_acs(0, BOTH(ACS_ULCORNER));
	n = show_1_acs(n, BOTH(ACS_LLCORNER));
	n = show_1_acs(n, BOTH(ACS_URCORNER));
	n = show_1_acs(n, BOTH(ACS_LRCORNER));
	n = show_1_acs(n, BOTH(ACS_RTEE));
	n = show_1_acs(n, BOTH(ACS_LTEE));
	n = show_1_acs(n, BOTH(ACS_BTEE));
	n = show_1_acs(n, BOTH(ACS_TTEE));
	n = show_1_acs(n, BOTH(ACS_HLINE));
	n = show_1_acs(n, BOTH(ACS_VLINE));
	n = show_1_acs(n, BOTH(ACS_PLUS));
	n = show_1_acs(n, BOTH(ACS_S1));
	n = show_1_acs(n, BOTH(ACS_S9));
	n = show_1_acs(n, BOTH(ACS_DIAMOND));
	n = show_1_acs(n, BOTH(ACS_CKBOARD));
	n = show_1_acs(n, BOTH(ACS_DEGREE));
	n = show_1_acs(n, BOTH(ACS_PLMINUS));
	n = show_1_acs(n, BOTH(ACS_BULLET));
	n = show_1_acs(n, BOTH(ACS_LARROW));
	n = show_1_acs(n, BOTH(ACS_RARROW));
	n = show_1_acs(n, BOTH(ACS_DARROW));
	n = show_1_acs(n, BOTH(ACS_UARROW));
	n = show_1_acs(n, BOTH(ACS_BOARD));
	n = show_1_acs(n, BOTH(ACS_LANTERN));
	n = show_1_acs(n, BOTH(ACS_BLOCK));
	n = show_1_acs(n, BOTH(ACS_S3));
	n = show_1_acs(n, BOTH(ACS_S7));
	n = show_1_acs(n, BOTH(ACS_LEQUAL));
	n = show_1_acs(n, BOTH(ACS_GEQUAL));
	n = show_1_acs(n, BOTH(ACS_PI));
	n = show_1_acs(n, BOTH(ACS_NEQUAL));
	n = show_1_acs(n, BOTH(ACS_STERLING));
}

static void acs_display(void)
{
	int	c = 'a';

	do {
		switch (c) {
		case 'a':
			show_acs_chars();
			break;
		case '0':
		case '1':
		case '2':
		case '3':
			show_upper_chars((c - '0') * 32 + 128);
			break;
		}
		mvprintw(LINES-3,0, "Note: ANSI terminals may not display C1 characters.");
		mvprintw(LINES-2,0, "Select: a=ACS, 0=C1, 1,2,3=GR characters, q=quit");
		refresh();
	} while ((c = Getchar()) != 'x' && c != 'q');

	Pause();
	erase();
	endwin();
}

/*
 * Graphic-rendition test (adapted from vttest)
 */
static void
test_sgr_attributes(void)
{
    int pass;

    for (pass = 0; pass < 2; pass++) {
	int normal = ((pass == 0 ? A_NORMAL : A_REVERSE)) | BLANK;

	/* Use non-default colors if possible to exercise bce a little */
	if (has_colors()) {
	    init_pair(1, COLOR_WHITE, COLOR_BLUE);
	    normal |= COLOR_PAIR(1);
	}
	bkgdset(normal);
	erase();
	mvprintw( 1,20, "Graphic rendition test pattern:");

	mvprintw( 4, 1, "vanilla");

#define set_sgr(mask) bkgdset((normal^(mask)));
	set_sgr(A_BOLD);
	mvprintw( 4,40, "bold");

	set_sgr(A_UNDERLINE);
	mvprintw( 6, 6, "underline");

	set_sgr(A_BOLD|A_UNDERLINE);
	mvprintw( 6,45, "bold underline");

	set_sgr(A_BLINK);
	mvprintw( 8, 1, "blink");

	set_sgr(A_BLINK|A_BOLD);
	mvprintw( 8,40, "bold blink");

	set_sgr(A_UNDERLINE|A_BLINK);
	mvprintw(10, 6, "underline blink");

	set_sgr(A_BOLD|A_UNDERLINE|A_BLINK);
	mvprintw(10,45, "bold underline blink");

	set_sgr(A_REVERSE);
	mvprintw(12, 1, "negative");

	set_sgr(A_BOLD|A_REVERSE);
	mvprintw(12,40, "bold negative");

	set_sgr(A_UNDERLINE|A_REVERSE);
	mvprintw(14, 6, "underline negative");

	set_sgr(A_BOLD|A_UNDERLINE|A_REVERSE);
	mvprintw(14,45, "bold underline negative");

	set_sgr(A_BLINK|A_REVERSE);
	mvprintw(16, 1, "blink negative");

	set_sgr(A_BOLD|A_BLINK|A_REVERSE);
	mvprintw(16,40, "bold blink negative");

	set_sgr(A_UNDERLINE|A_BLINK|A_REVERSE);
	mvprintw(18, 6, "underline blink negative");

	set_sgr(A_BOLD|A_UNDERLINE|A_BLINK|A_REVERSE);
	mvprintw(18,45, "bold underline blink negative");

	bkgdset(normal);
	mvprintw(LINES-2,1, "%s background. ", pass == 0 ? "Dark" : "Light");
	clrtoeol();
	Pause();
    }

    bkgdset(A_NORMAL | BLANK);
    erase();
    endwin();
}

/****************************************************************************
 *
 * Windows and scrolling tester.
 *
 ****************************************************************************/

#define BOTLINES	4	/* number of line stolen from screen bottom */

typedef struct
{
    int y, x;
}
pair;

#define FRAME struct frame
FRAME
{
	FRAME		*next, *last;
	bool		do_scroll;
	bool		do_keypad;
	WINDOW		*wind;
};

/* We need to know if these flags are actually set, so don't look in FRAME.
 * These names are known to work with SVr4 curses as well as ncurses.
 */
static bool HaveKeypad(FRAME *curp)
{
	WINDOW *win = (curp ? curp->wind : stdscr);
	return win->_use_keypad;
}

static bool HaveScroll(FRAME *curp)
{
	WINDOW *win = (curp ? curp->wind : stdscr);
	return win->_scroll;
}

static void newwin_legend(FRAME *curp)
{
	static const struct {
		const char *msg;
		int code;
	} legend[] = {
		{ "^C = create window",		0 },
		{ "^N = next window",		0 },
		{ "^P = previous window",	0 },
		{ "^F = scroll forward",	0 },
		{ "^B = scroll backward",	0 },
		{ "^K = keypad(%s)",		1 },
		{ "^S = scrollok(%s)",		2 },
		{ "^W = save window to file",	0 },
		{ "^R = restore window",	0 },
#ifdef NCURSES_VERSION
		{ "^X = resize",		0 },
#endif
		{ "^Q%s = exit",		3 }
	};
	size_t n;
	int y, x;
	bool do_keypad = HaveKeypad(curp);
	bool do_scroll = HaveScroll(curp);
	char buf[BUFSIZ];

	move(LINES-4, 0);
	for (n = 0; n < SIZEOF(legend); n++) {
		switch (legend[n].code) {
		default:
			strcpy(buf, legend[n].msg);
			break;
		case 1:
			sprintf(buf, legend[n].msg, do_keypad ? "yes" : "no");
			break;
		case 2:
			sprintf(buf, legend[n].msg, do_scroll ? "yes" : "no");
			break;
		case 3:
			sprintf(buf, legend[n].msg, do_keypad ? "/ESC" : "");
			break;
		}
		getyx(stdscr, y, x);
		addstr((COLS < (x + 3 + (int)strlen(buf))) ? "\n" : (n ? ", " : ""));
		addstr(buf);
	}
	clrtoeol();
}

static void transient(FRAME *curp, NCURSES_CONST char *msg)
{
    newwin_legend(curp);
    if (msg)
    {
	mvaddstr(LINES - 1, 0, msg);
	refresh();
	napms(1000);
    }

    move(LINES-1, 0);
    printw("%s characters are echoed, window should %sscroll.",
	HaveKeypad(curp) ? "Non-arrow" : "All other",
	HaveScroll(curp) ? "" : "not " );
    clrtoeol();
}

static void newwin_report(FRAME *curp)
/* report on the cursor's current position, then restore it */
{
	WINDOW *win = (curp != 0) ? curp->wind : stdscr;
	int y, x;

	if (win != stdscr)
		transient(curp, (char *)0);
	getyx(win, y, x);
	move(LINES - 1, COLS - 17);
	printw("Y = %2d X = %2d", y, x);
	if (win != stdscr)
		refresh();
	else
		wmove(win, y, x);
}

static pair *selectcell(int uli, int ulj, int lri, int lrj)
/* arrows keys move cursor, return location at current on non-arrow key */
{
    static pair	res;			/* result cell */
    int		si = lri - uli + 1;	/* depth of the select area */
    int		sj = lrj - ulj + 1;	/* width of the select area */
    int		i = 0, j = 0;		/* offsets into the select area */

    res.y = uli;
    res.x = ulj;
    for (;;)
    {
	move(uli + i, ulj + j);
	newwin_report((FRAME *)0);

	switch(Getchar())
	{
	case KEY_UP:	i += si - 1; break;
	case KEY_DOWN:	i++; break;
	case KEY_LEFT:	j += sj - 1; break;
	case KEY_RIGHT:	j++; break;
	case QUIT:
	case ESCAPE:	return((pair *)0);
#ifdef NCURSES_MOUSE_VERSION
	case KEY_MOUSE:
	    {
		MEVENT	event;

		getmouse(&event);
		if (event.y > uli && event.x > ulj) {
			i = event.y - uli;
			j = event.x - ulj;
		} else {
			beep();
			break;
		}
	    }
	    /* FALLTHRU */
#endif
	default:	res.y = uli + i; res.x = ulj + j; return(&res);
	}
	i %= si;
	j %= sj;
    }
}

static void outerbox(pair ul, pair lr, bool onoff)
/* draw or erase a box *outside* the given pair of corners */
{
    mvaddch(ul.y-1, lr.x-1, onoff ? ACS_ULCORNER : ' ');
    mvaddch(ul.y-1, lr.x+1, onoff ? ACS_URCORNER : ' ');
    mvaddch(lr.y+1, lr.x+1, onoff ? ACS_LRCORNER : ' ');
    mvaddch(lr.y+1, ul.x-1, onoff ? ACS_LLCORNER : ' ');
    move(ul.y-1, ul.x);   hline(onoff ? ACS_HLINE : ' ', lr.x - ul.x + 1);
    move(ul.y,   ul.x-1); vline(onoff ? ACS_VLINE : ' ', lr.y - ul.y + 1);
    move(lr.y+1, ul.x);   hline(onoff ? ACS_HLINE : ' ', lr.x - ul.x + 1);
    move(ul.y,   lr.x+1); vline(onoff ? ACS_VLINE : ' ', lr.y - ul.y + 1);
}

static WINDOW *getwindow(void)
/* Ask user for a window definition */
{
    WINDOW	*rwindow;
    pair	ul, lr, *tmp;

    move(0, 0); clrtoeol();
    addstr("Use arrows to move cursor, anything else to mark corner 1");
    refresh();
    if ((tmp = selectcell(2, 1, LINES-BOTLINES-2, COLS-2)) == (pair *)0)
	return((WINDOW *)0);
    memcpy(&ul, tmp, sizeof(pair));
    mvaddch(ul.y-1, ul.x-1, ACS_ULCORNER);
    move(0, 0); clrtoeol();
    addstr("Use arrows to move cursor, anything else to mark corner 2");
    refresh();
    if ((tmp = selectcell(ul.y, ul.x, LINES-BOTLINES-2, COLS-2)) == (pair *)0)
	return((WINDOW *)0);
    memcpy(&lr, tmp, sizeof(pair));

    rwindow = subwin(stdscr, lr.y - ul.y + 1, lr.x - ul.x + 1, ul.y, ul.x);

    outerbox(ul, lr, TRUE);
    refresh();

    wrefresh(rwindow);

    move(0, 0); clrtoeol();
    return(rwindow);
}

static void newwin_move(FRAME *curp, int dy, int dx)
{
	WINDOW *win = (curp != 0) ? curp->wind : stdscr;
	int cur_y, cur_x;
	int max_y, max_x;

	getyx(win, cur_y, cur_x);
	getmaxyx(win, max_y, max_x);
	if ((cur_x += dx) < 0)
		cur_x = 0;
	else if (cur_x >= max_x)
		cur_x = max_x - 1;
	if ((cur_y += dy) < 0)
		cur_y = 0;
	else if (cur_y >= max_y)
		cur_y = max_y - 1;
	wmove(win, cur_y, cur_x);
}

static FRAME *delete_framed(FRAME *fp, bool showit)
{
	FRAME *np;

	fp->last->next = fp->next;
	fp->next->last = fp->last;

	if (showit) {
		werase(fp->wind);
		wrefresh(fp->wind);
	}
	delwin(fp->wind);

	np = (fp == fp->next) ? 0 : fp->next;
	free(fp);
	return np;
}

static void acs_and_scroll(void)
/* Demonstrate windows */
{
    int	c, i;
    FILE *fp;
    FRAME *current = (FRAME *)0, *neww;
    WINDOW *usescr = stdscr;

#define DUMPFILE	"screendump"

#ifdef NCURSES_MOUSE_VERSION
    mousemask(BUTTON1_CLICKED, (mmask_t *)0);
#endif
    c = CTRL('C');
    raw();
    do {
	transient((FRAME *)0, (char *)0);
	switch(c)
	{
	case CTRL('C'):
	    neww = (FRAME *) calloc(1, sizeof(FRAME));
	    if ((neww->wind = getwindow()) == (WINDOW *)0)
		goto breakout;

	    if (current == 0)	/* First element,  */
	    {
		neww->next = neww; /*   so point it at itself */
		neww->last = neww;
	    }
	    else
	    {
		neww->next = current->next;
		neww->last = current;
		neww->last->next = neww;
		neww->next->last = neww;
	    }
	    current = neww;
	    /* SVr4 curses sets the keypad on all newly-created windows to
	     * false.  Someone reported that PDCurses makes new windows inherit
	     * this flag.  Remove the following 'keypad()' call to test this
	     */
	    keypad(current->wind, TRUE);
	    current->do_keypad = HaveKeypad(current);
	    current->do_scroll = HaveScroll(current);
	    break;

	case CTRL('N'):		/* go to next window */
	    if (current)
		current = current->next;
	    break;

	case CTRL('P'):		/* go to previous window */
	    if (current)
		current = current->last;
	    break;

	case CTRL('F'):		/* scroll current window forward */
	    if (current)
		wscrl(current->wind, 1);
	    break;

	case CTRL('B'):		/* scroll current window backwards */
	    if (current)
		wscrl(current->wind, -1);
	    break;

	case CTRL('K'):		/* toggle keypad mode for current */
	    if (current) {
		current->do_keypad = !current->do_keypad;
		keypad(current->wind, current->do_keypad);
	    }
	    break;

	case CTRL('S'):
	    if (current) {
		current->do_scroll = !current->do_scroll;
		scrollok(current->wind, current->do_scroll);
	    }
	    break;

	case CTRL('W'):		/* save and delete window */
	    if (current == current->next)
		break;
	    if ((fp = fopen(DUMPFILE, "w")) == (FILE *)0)
		transient(current, "Can't open screen dump file");
	    else
	    {
		(void) putwin(current->wind, fp);
		(void) fclose(fp);

		current = delete_framed(current, TRUE);
	    }
	    break;

	case CTRL('R'):		/* restore window */
	    if ((fp = fopen(DUMPFILE, "r")) == (FILE *)0)
		transient(current, "Can't open screen dump file");
	    else
	    {
		neww = (FRAME *) calloc(1, sizeof(FRAME));

		neww->next = current->next;
		neww->last = current;
		neww->last->next = neww;
		neww->next->last = neww;

		neww->wind = getwin(fp);
		(void) fclose(fp);

		wrefresh(neww->wind);
	    }
	    break;

#ifdef NCURSES_VERSION
	case CTRL('X'):		/* resize window */
	    if (current)
	    {
		pair *tmp, ul, lr;
		int mx, my;

		move(0, 0); clrtoeol();
		addstr("Use arrows to move cursor, anything else to mark new corner");
		refresh();

		getbegyx(current->wind, ul.y, ul.x);

		tmp = selectcell(ul.y, ul.x, LINES-BOTLINES-2, COLS-2);
		if (tmp == (pair *)0)
		{
		    beep();
		    break;
		}

		getmaxyx(current->wind, lr.y, lr.x);
		lr.y += (ul.y - 1);
		lr.x += (ul.x - 1);
		outerbox(ul, lr, FALSE);
		wnoutrefresh(stdscr);

		/* strictly cosmetic hack for the test */
		getmaxyx(current->wind, my, mx);
		if (my > tmp->y - ul.y)
		{
		  getyx(current->wind, lr.y, lr.x);
		  wmove(current->wind, tmp->y - ul.y + 1, 0);
		  wclrtobot(current->wind);
		  wmove(current->wind, lr.y, lr.x);
		}
		if (mx > tmp->x - ul.x)
		  for (i = 0; i < my; i++)
		  {
		    wmove(current->wind, i, tmp->x - ul.x + 1);
		    wclrtoeol(current->wind);
		  }
		wnoutrefresh(current->wind);

		memcpy(&lr, tmp, sizeof(pair));
		(void) wresize(current->wind, lr.y-ul.y+0, lr.x-ul.x+0);

		getbegyx(current->wind, ul.y, ul.x);
		getmaxyx(current->wind, lr.y, lr.x);
		lr.y += (ul.y - 1);
		lr.x += (ul.x - 1);
		outerbox(ul, lr, TRUE);
		wnoutrefresh(stdscr);

		wnoutrefresh(current->wind);
		move(0, 0); clrtoeol();
		doupdate();
	    }
	    break;
#endif	/* NCURSES_VERSION */

	case KEY_F(10):	/* undocumented --- use this to test area clears */
	    selectcell(0, 0, LINES - 1, COLS - 1);
	    clrtobot();
	    refresh();
	    break;

	case KEY_UP:
	    newwin_move(current, -1,  0);
	    break;
	case KEY_DOWN:
	    newwin_move(current,  1,  0);
	    break;
	case KEY_LEFT:
	    newwin_move(current,  0, -1);
	    break;
	case KEY_RIGHT:
	    newwin_move(current,  0,  1);
	    break;

	case KEY_BACKSPACE:
	    /* FALLTHROUGH */
	case KEY_DC:
	    {
		int y, x;
		getyx(current->wind, y, x);
		if (--x < 0) {
			if (--y < 0)
				break;
			x = getmaxx(current->wind) - 1;
		}
		mvwdelch(current->wind, y, x);
	    }
	    break;

	case '\r':
	    c = '\n';
	    /* FALLTHROUGH */

	default:
	    if (current)
		waddch(current->wind, (chtype)c);
	    else
		beep();
	    break;
	}
	newwin_report(current);
	usescr = (current ? current->wind : stdscr);
	wrefresh(usescr);
    } while
	((c = wGetchar(usescr)) != QUIT
	 && !((c == ESCAPE) && (usescr->_use_keypad))
	 && (c != ERR));

 breakout:
    while (current != 0)
    	current = delete_framed(current, FALSE);

    scrollok(stdscr, TRUE);	/* reset to driver's default */
#ifdef NCURSES_MOUSE_VERSION
    mousemask(0, (mmask_t *)0);
#endif
    noraw();
    erase();
    endwin();
}

/****************************************************************************
 *
 * Panels tester
 *
 ****************************************************************************/

#if USE_LIBPANEL
static PANEL *p1;
static PANEL *p2;
static PANEL *p3;
static PANEL *p4;
static PANEL *p5;
static WINDOW *w1;
static WINDOW *w2;
static WINDOW *w3;
static WINDOW *w4;
static WINDOW *w5;

static unsigned long nap_msec = 1;

static NCURSES_CONST char *mod[] =
{
	"test ",
	"TEST ",
	"(**) ",
	"*()* ",
	"<--> ",
	"LAST "
};

/*+-------------------------------------------------------------------------
	wait_a_while(msec)
--------------------------------------------------------------------------*/
static void
wait_a_while(unsigned long msec GCC_UNUSED)
{
#if HAVE_NAPMS
	if(nap_msec == 1)
		wGetchar(stdscr);
	else
		napms(nap_msec);
#else
	if(nap_msec == 1)
		wGetchar(stdscr);
	else if(msec > 1000L)
		sleep((int)msec/1000L);
	else
		sleep(1);
#endif
}	/* end of wait_a_while */

/*+-------------------------------------------------------------------------
	saywhat(text)
--------------------------------------------------------------------------*/
static void
saywhat(NCURSES_CONST char *text)
{
	wmove(stdscr,LINES - 1,0);
	wclrtoeol(stdscr);
	waddstr(stdscr, text);
}	/* end of saywhat */

/*+-------------------------------------------------------------------------
	mkpanel(rows,cols,tly,tlx) - alloc a win and panel and associate them
--------------------------------------------------------------------------*/
static PANEL *
mkpanel(int rows, int cols, int tly, int tlx)
{
WINDOW *win = newwin(rows,cols,tly,tlx);
PANEL *pan;

	if(!win)
		return((PANEL *)0);
	if((pan = new_panel(win)))
		return(pan);
	delwin(win);
	return((PANEL *)0);
}	/* end of mkpanel */

/*+-------------------------------------------------------------------------
	rmpanel(pan)
--------------------------------------------------------------------------*/
static void
rmpanel(PANEL *pan)
{
WINDOW *win = panel_window(pan);
	del_panel(pan);
	delwin(win);
}	/* end of rmpanel */

/*+-------------------------------------------------------------------------
	pflush()
--------------------------------------------------------------------------*/
static void
pflush(void)
{
	update_panels();
	doupdate();
}	/* end of pflush */

/*+-------------------------------------------------------------------------
	fill_panel(win)
--------------------------------------------------------------------------*/
static void
fill_panel(PANEL *pan)
{
WINDOW *win = panel_window(pan);
int num = ((const char *)panel_userptr(pan))[1];
int y,x;

	box(win, 0, 0);
	wmove(win,1,1);
	wprintw(win,"-pan%c-", num);
	for(y = 2; y < getmaxy(win) - 1; y++)
	{
		for(x = 1; x < getmaxx(win) - 1; x++)
		{
			wmove(win,y,x);
			waddch(win,num);
		}
	}
}	/* end of fill_panel */

static void demo_panels(void)
{
int itmp;
register y,x;

	refresh();

	for(y = 0; y < LINES - 1; y++)
	{
		for(x = 0; x < COLS; x++)
			wprintw(stdscr,"%d",(y + x) % 10);
	}
	for(y = 0; y < 5; y++)
	{
		p1 = mkpanel(LINES/2 - 2, COLS/8 + 1, 0, 0);
		w1 = panel_window(p1);
		set_panel_userptr(p1,"p1");

		p2 = mkpanel(LINES/2 + 1, COLS/7, LINES/4, COLS/10);
		w2 = panel_window(p2);
		set_panel_userptr(p2,"p2");

		p3 = mkpanel(LINES/4, COLS/10, LINES/2, COLS/9);
		w3 = panel_window(p3);
		set_panel_userptr(p3,"p3");

		p4 = mkpanel(LINES/2 - 2, COLS/8, LINES/2 - 2, COLS/3);
		w4 = panel_window(p4);
		set_panel_userptr(p4,"p4");

		p5 = mkpanel(LINES/2 - 2, COLS/8, LINES/2, COLS/2 - 2);
		w5 = panel_window(p5);
		set_panel_userptr(p5,"p5");

		fill_panel(p1);
		fill_panel(p2);
		fill_panel(p3);
		fill_panel(p4);
		fill_panel(p5);
		hide_panel(p4);
		hide_panel(p5);
		pflush();
		saywhat("press any key to continue");
		wait_a_while(nap_msec);

		saywhat("h3 s1 s2 s4 s5; press any key to continue");
		move_panel(p1,0,0);
		hide_panel(p3);
		show_panel(p1);
		show_panel(p2);
		show_panel(p4);
		show_panel(p5);
		pflush();
		wait_a_while(nap_msec);

		saywhat("s1; press any key to continue");
		show_panel(p1);
		pflush();
		wait_a_while(nap_msec);

		saywhat("s2; press any key to continue");
		show_panel(p2);
		pflush();
		wait_a_while(nap_msec);

		saywhat("m2; press any key to continue");
		move_panel(p2, LINES/3 + 1, COLS / 8);
		pflush();
		wait_a_while(nap_msec);

		saywhat("s3;");
		show_panel(p3);
		pflush();
		wait_a_while(nap_msec);

		saywhat("m3; press any key to continue");
		move_panel(p3, LINES/4 + 1, COLS / 15);
		pflush();
		wait_a_while(nap_msec);

		saywhat("b3; press any key to continue");
		bottom_panel(p3);
		pflush();
		wait_a_while(nap_msec);

		saywhat("s4; press any key to continue");
		show_panel(p4);
		pflush();
		wait_a_while(nap_msec);

		saywhat("s5; press any key to continue");
		show_panel(p5);
		pflush();
		wait_a_while(nap_msec);

		saywhat("t3; press any key to continue");
		top_panel(p3);
		pflush();
		wait_a_while(nap_msec);

		saywhat("t1; press any key to continue");
		top_panel(p1);
		pflush();
		wait_a_while(nap_msec);

		saywhat("t2; press any key to continue");
		top_panel(p2);
		pflush();
		wait_a_while(nap_msec);

		saywhat("t3; press any key to continue");
		top_panel(p3);
		pflush();
		wait_a_while(nap_msec);

		saywhat("t4; press any key to continue");
		top_panel(p4);
		pflush();
		wait_a_while(nap_msec);

		for(itmp = 0; itmp < 6; itmp++)
		{
			saywhat("m4; press any key to continue");
			wmove(w4, LINES/8, 1);
			waddstr(w4,mod[itmp]);
			move_panel(p4, LINES/6, itmp*(COLS/8));
			wmove(w5, LINES/6, 1);
			waddstr(w5,mod[itmp]);
			pflush();
			wait_a_while(nap_msec);
			saywhat("m5; press any key to continue");
			wmove(w4, LINES/6, 1);
			waddstr(w4,mod[itmp]);
			move_panel(p5, LINES/3 - 1,(itmp*10) + 6);
			wmove(w5, LINES/8, 1);
			waddstr(w5,mod[itmp]);
			pflush();
			wait_a_while(nap_msec);
		}

		saywhat("m4; press any key to continue");
		move_panel(p4, LINES/6, itmp*(COLS/8));
		pflush();
		wait_a_while(nap_msec);

		saywhat("t5; press any key to continue");
		top_panel(p5);
		pflush();
		wait_a_while(nap_msec);

		saywhat("t2; press any key to continue");
		top_panel(p2);
		pflush();
		wait_a_while(nap_msec);

		saywhat("t1; press any key to continue");
		top_panel(p1);
		pflush();
		wait_a_while(nap_msec);

		saywhat("d2; press any key to continue");
		rmpanel(p2);
		pflush();
		wait_a_while(nap_msec);

		saywhat("h3; press any key to continue");
		hide_panel(p3);
		pflush();
		wait_a_while(nap_msec);

		saywhat("d1; press any key to continue");
		rmpanel(p1);
		pflush();
		wait_a_while(nap_msec);

		saywhat("d4; press any key to continue");
		rmpanel(p4);
		pflush();
		wait_a_while(nap_msec);

		saywhat("d5; press any key to continue");
		rmpanel(p5);
		pflush();
		wait_a_while(nap_msec);
		if(nap_msec == 1)
			break;
		nap_msec = 100L;
	}

    erase();
    endwin();
}

/****************************************************************************
 *
 * Pad tester
 *
 ****************************************************************************/

#define GRIDSIZE	3

static bool show_panner_legend = TRUE;

static int panner_legend(int line)
{
	static const char *const legend[] = {
		"Use arrow keys (or U,D,L,R) to pan, q to quit (?,t,s flags)",
		"Use ! to shell-out.  Toggle legend:?, timer:t, scroll mark:s.",
		"Use +,- (or j,k) to grow/shrink the panner vertically.",
		"Use <,> (or h,l) to grow/shrink the panner horizontally."
	};
	int n = (SIZEOF(legend) - (LINES - line));
	if (line < LINES && (n >= 0)) {
		move(line, 0);
		if (show_panner_legend)
			printw("%s", legend[n]);
		clrtoeol();
		return show_panner_legend;
	}
	return FALSE;
}

static void panner_h_cleanup(int from_y, int from_x, int to_x)
{
	if (!panner_legend(from_y))
		do_h_line(from_y, from_x, ' ', to_x);
}

static void panner_v_cleanup(int from_y, int from_x, int to_y)
{
	if (!panner_legend(from_y))
		do_v_line(from_y, from_x, ' ', to_y);
}

static void panner(WINDOW *pad,
		   int top_x, int top_y, int porty, int portx,
		   int (*pgetc)(WINDOW *))
{
#if HAVE_GETTIMEOFDAY
    struct timeval before, after;
    bool timing = TRUE;
#endif
    bool scrollers = TRUE;
    int basex = 0;
    int basey = 0;
    int pxmax, pymax, lowend, highend, c;

    getmaxyx(pad, pymax, pxmax);
    scrollok(stdscr, FALSE);	/* we don't want stdscr to scroll! */

    c = KEY_REFRESH;
    do {
#ifdef NCURSES_VERSION
	/*
	 * During shell-out, the user may have resized the window.  Adjust
	 * the port size of the pad to accommodate this.  Ncurses automatically
	 * resizes all of the normal windows to fit on the new screen.
	 */
	if (top_x > COLS)	top_x = COLS;
	if (portx > COLS)	portx = COLS;
	if (top_y > LINES)	top_y = LINES;
	if (porty > LINES) 	porty = LINES;
#endif
	switch(c)
	{
	case KEY_REFRESH:
	    erase();

	    /* FALLTHRU */
	case '?':
	    if (c == '?')
		show_panner_legend = !show_panner_legend;
	    panner_legend(LINES - 4);
	    panner_legend(LINES - 3);
	    panner_legend(LINES - 2);
	    panner_legend(LINES - 1);
	    break;
#if HAVE_GETTIMEOFDAY
	case 't':
	    timing = !timing;
	    if (!timing)
		panner_legend(LINES-1);
	    break;
#endif
	case 's':
	    scrollers = !scrollers;
	    break;

	    /* Move the top-left corner of the pad, keeping the bottom-right
	     * corner fixed.
	     */
	case 'h':	/* increase-columns: move left edge to left */
	    if (top_x <= 0)
		beep();
	    else
	    {
		panner_v_cleanup(top_y, top_x, porty);
		top_x--;
	    }
	    break;

	case 'j':	/* decrease-lines: move top-edge down */
	    if (top_y >= porty)
		beep();
	    else
	    {
		panner_h_cleanup(top_y - 1, top_x - (top_x > 0), portx);
		top_y++;
	    }
	    break;

	case 'k':	/* increase-lines: move top-edge up */
	    if (top_y <= 0)
		beep();
	    else
	    {
		top_y--;
		panner_h_cleanup(top_y, top_x, portx);
	    }
	    break;

	case 'l':	/* decrease-columns: move left-edge to right */
	    if (top_x >= portx)
		beep();
	    else
	    {
		panner_v_cleanup(top_y - (top_y > 0), top_x - 1, porty);
		top_x++;
	    }
	    break;

	    /* Move the bottom-right corner of the pad, keeping the top-left
	     * corner fixed.
	     */
	case KEY_IC:	/* increase-columns: move right-edge to right */
	    if (portx >= pxmax || portx >= COLS)
		beep();
	    else
	    {
		panner_v_cleanup(top_y - (top_y > 0), portx - 1, porty);
		++portx;
	    }
	    break;

	case KEY_IL:	/* increase-lines: move bottom-edge down */
	    if (porty >= pymax || porty >= LINES)
		beep();
	    else
	    {
		panner_h_cleanup(porty - 1, top_x - (top_x > 0), portx);
		++porty;
	    }
	    break;

	case KEY_DC:	/* decrease-columns: move bottom edge up */
	    if (portx <= top_x)
		beep();
	    else
	    {
		portx--;
		panner_v_cleanup(top_y - (top_y > 0), portx, porty);
	    }
	    break;

	case KEY_DL:	/* decrease-lines */
	    if (porty <= top_y)
		beep();
	    else
	    {
		porty--;
		panner_h_cleanup(porty, top_x - (top_x > 0), portx);
	    }
	    break;

	case KEY_LEFT:	/* pan leftwards */
	    if (basex > 0)
		basex--;
	    else
		beep();
	    break;

	case KEY_RIGHT:	/* pan rightwards */
	    if (basex + portx - (pymax > porty) < pxmax)
		basex++;
	    else
		beep();
	    break;

	case KEY_UP:	/* pan upwards */
	    if (basey > 0)
		basey--;
	    else
		beep();
	    break;

	case KEY_DOWN:	/* pan downwards */
	    if (basey + porty - (pxmax > portx) < pymax)
		basey++;
	    else
		beep();
	    break;

	default:
	    beep();
	    break;
	}

	mvaddch(top_y - 1, top_x - 1, ACS_ULCORNER);
	do_v_line(top_y, top_x - 1, ACS_VLINE, porty);
	do_h_line(top_y - 1, top_x, ACS_HLINE, portx);

	if (scrollers && (pxmax > portx - 1)) {
	    int length  = (portx - top_x - 1);
	    float ratio = ((float) length) / ((float) pxmax);

	    lowend  = (int)(top_x + (basex * ratio));
	    highend = (int)(top_x + ((basex + length) * ratio));

	    do_h_line(porty - 1, top_x, ACS_HLINE, lowend);
	    if (highend < portx) {
		attron(A_REVERSE);
		do_h_line(porty - 1, lowend, ' ', highend + 1);
		attroff(A_REVERSE);
		do_h_line(porty - 1, highend + 1, ACS_HLINE, portx);
	    }
        } else
	    do_h_line(porty - 1, top_x, ACS_HLINE, portx);

	if (scrollers && (pymax > porty - 1)) {
	    int length  = (porty - top_y - 1);
	    float ratio = ((float) length) / ((float) pymax);

	    lowend  = (int)(top_y + (basey * ratio));
	    highend = (int)(top_y + ((basey + length) * ratio));

	    do_v_line(top_y, portx - 1, ACS_VLINE, lowend);
		if (highend < porty) {
		attron(A_REVERSE);
		do_v_line(lowend, portx - 1, ' ', highend + 1);
		attroff(A_REVERSE);
		do_v_line(highend + 1, portx - 1, ACS_VLINE, porty);
	    }
        } else
	    do_v_line(top_y, portx - 1, ACS_VLINE, porty);

	mvaddch(top_y - 1, portx - 1, ACS_URCORNER);
	mvaddch(porty - 1, top_x - 1, ACS_LLCORNER);
	mvaddch(porty - 1, portx - 1, ACS_LRCORNER);

#if HAVE_GETTIMEOFDAY
	gettimeofday(&before, 0);
#endif
	wnoutrefresh(stdscr);

	pnoutrefresh(pad,
		 basey, basex,
		 top_y, top_x,
		 porty - (pxmax > portx) - 1,
		 portx - (pymax > porty) - 1);

	doupdate();
#if HAVE_GETTIMEOFDAY
	if (timing) {
		double elapsed;
		gettimeofday(&after, 0);
		elapsed = (after.tv_sec  + after.tv_usec  / 1.0e6)
			- (before.tv_sec + before.tv_usec / 1.0e6);
		move(LINES-1, COLS-20);
		printw("Secs: %2.03f", elapsed);
		refresh();
	}
#endif

    } while
	((c = pgetc(pad)) != KEY_EXIT);

    scrollok(stdscr, TRUE);	/* reset to driver's default */
}

static
int padgetch(WINDOW *win)
{
    int	c;

    switch(c = wGetchar(win))
    {
    case '!': ShellOut(FALSE); return KEY_REFRESH;
    case CTRL('r'): endwin(); refresh(); return KEY_REFRESH;
    case CTRL('l'): return KEY_REFRESH;
    case 'U': return(KEY_UP);
    case 'D': return(KEY_DOWN);
    case 'R': return(KEY_RIGHT);
    case 'L': return(KEY_LEFT);
    case '+': return(KEY_IL);
    case '-': return(KEY_DL);
    case '>': return(KEY_IC);
    case '<': return(KEY_DC);
    case ERR: /* FALLTHRU */
    case 'q': return(KEY_EXIT);
    default: return(c);
    }
}

static void demo_pad(void)
/* Demonstrate pads. */
{
    int i, j;
    unsigned gridcount = 0;
    WINDOW *panpad = newpad(200, 200);

    for (i = 0; i < 200; i++)
    {
	for (j = 0; j < 200; j++)
	    if (i % GRIDSIZE == 0 && j % GRIDSIZE == 0)
	    {
		if (i == 0 || j == 0)
		    waddch(panpad, '+');
		else
		    waddch(panpad, (chtype)('A' + (gridcount++ % 26)));
	    }
	    else if (i % GRIDSIZE == 0)
		waddch(panpad, '-');
	    else if (j % GRIDSIZE == 0)
		waddch(panpad, '|');
	    else
		waddch(panpad, ' ');
    }
    panner_legend(LINES - 4);
    panner_legend(LINES - 3);
    panner_legend(LINES - 2);
    panner_legend(LINES - 1);

    keypad(panpad, TRUE);

    /* Make the pad (initially) narrow enough that a trace file won't wrap.
     * We'll still be able to widen it during a test, since that's required
     * for testing boundaries.
     */
    panner(panpad, 2, 2, LINES - 5, COLS-15, padgetch);

    delwin(panpad);
    endwin();
    erase();
}
#endif /* USE_LIBPANEL */

/****************************************************************************
 *
 * Tests from John Burnell's PDCurses tester
 *
 ****************************************************************************/

static void Continue (WINDOW *win)
{
    noecho();
    wmove(win, 10, 1);
    mvwaddstr(win, 10, 1, " Press any key to continue");
    wrefresh(win);
    wGetchar(win);
}

static void flushinp_test(WINDOW *win)
/* Input test, adapted from John Burnell's PDCurses tester */
{
    int w, h, bx, by, sw, sh, i;

    WINDOW *subWin;
    wclear (win);

    getmaxyx(win, h,  w);
    getbegyx(win, by, bx);
    sw = w / 3;
    sh = h / 3;
    if((subWin = subwin(win, sh, sw, by + h - sh - 2, bx + w - sw - 2)) == 0)
        return;

#ifdef A_COLOR
    if (has_colors())
    {
	init_pair(2,COLOR_CYAN,COLOR_BLUE);
	wattrset(subWin, COLOR_PAIR(2) | A_BOLD);
    }
    else
	wattrset(subWin, A_BOLD);
#else
    wattrset(subWin, A_BOLD);
#endif
    box(subWin, ACS_VLINE, ACS_HLINE);
    mvwaddstr(subWin, 2, 1, "This is a subwindow");
    wrefresh(win);

    /*
     * This used to set 'nocbreak()'.  However, Alexander Lukyanov says that
     * it only happened to "work" on SVr4 because that implementation does not
     * emulate nocbreak+noecho mode, whereas ncurses does.  To get the desired
     * test behavior, we're using 'cbreak()', which will allow a single
     * character to return without needing a newline. - T.Dickey 1997/10/11.
     */
    cbreak();
    mvwaddstr(win, 0, 1, "This is a test of the flushinp() call.");

    mvwaddstr(win, 2, 1, "Type random keys for 5 seconds.");
    mvwaddstr(win, 3, 1,
      "These should be discarded (not echoed) after the subwindow goes away.");
    wrefresh(win);

    for (i = 0; i < 5; i++)
    {
	mvwprintw (subWin, 1, 1, "Time = %d", i);
	wrefresh(subWin);
	napms(1000);
	flushinp();
    }

    delwin (subWin);
    werase(win);
    flash();
    wrefresh(win);
    napms(1000);

    mvwaddstr(win, 2, 1,
	      "If you were still typing when the window timer expired,");
    mvwaddstr(win, 3, 1,
	      "or else you typed nothing at all while it was running,");
    mvwaddstr(win, 4, 1,
	      "test was invalid.  You'll see garbage or nothing at all. ");
    mvwaddstr(win, 6, 1, "Press a key");
    wmove(win, 9, 10);
    wrefresh(win);
    echo();
    wGetchar(win);
    flushinp();
    mvwaddstr(win, 12, 0,
	      "If you see any key other than what you typed, flushinp() is broken.");
    Continue(win);

    wmove(win, 9, 10);
    wdelch(win);
    wrefresh(win);
    wmove(win, 12, 0);
    clrtoeol();
    waddstr(win,
	    "What you typed should now have been deleted; if not, wdelch() failed.");
    Continue(win);

    cbreak();
}

/****************************************************************************
 *
 * Menu test
 *
 ****************************************************************************/

#if USE_LIBMENU

#define MENU_Y	8
#define MENU_X	8

static int menu_virtualize(int c)
{
    if (c == '\n' || c == KEY_EXIT)
	return(MAX_COMMAND + 1);
    else if (c == 'n' || c == KEY_DOWN)
	return(REQ_NEXT_ITEM);
    else if (c == 'p' || c == KEY_UP)
	return(REQ_PREV_ITEM);
    else if (c == ' ')
	return(REQ_TOGGLE_ITEM);
    else
	return(c);
}

static const char *animals[] =
{
    "Lions", "Tigers", "Bears", "(Oh my!)", "Newts", "Platypi", "Lemurs",
    (char *)0
};

static void menu_test(void)
{
    MENU	*m;
    ITEM	*items[SIZEOF(animals)];
    ITEM	**ip = items;
    const char	**ap;
    int		mrows, mcols;
    WINDOW	*menuwin;

    mvaddstr(0, 0, "This is the menu test:");
    mvaddstr(2, 0, "  Use up and down arrow to move the select bar.");
    mvaddstr(3, 0, "  'n' and 'p' act like arrows.");
    mvaddstr(4, 0, "  Press return to exit.");
    refresh();

    for (ap = animals; *ap; ap++)
	*ip++ = new_item(*ap, "");
    *ip = (ITEM *)0;

    m = new_menu(items);

    scale_menu(m, &mrows, &mcols);

    menuwin = newwin(mrows + 2, mcols +  2, MENU_Y, MENU_X);
    set_menu_win(m, menuwin);
    keypad(menuwin, TRUE);
    box(menuwin, 0, 0);

    set_menu_sub(m, derwin(menuwin, mrows, mcols, 1, 1));

    post_menu(m);

    while (menu_driver(m, menu_virtualize(wGetchar(menuwin))) != E_UNKNOWN_COMMAND)
	continue;

    (void) mvprintw(LINES - 2, 0,
		     "You chose: %s\n", item_name(current_item(m)));
    (void) addstr("Press any key to continue...");
    wGetchar(stdscr);

    unpost_menu(m);
    delwin(menuwin);

    free_menu(m);
    for (ip = items; *ip; ip++)
	free_item(*ip);
}

#ifdef TRACE
#define T_TBL(name) { #name, name }
static struct {
	const char *name;
	int mask;
} t_tbl[] = {
	T_TBL(TRACE_DISABLE),
	T_TBL(TRACE_TIMES),
	T_TBL(TRACE_TPUTS),
	T_TBL(TRACE_UPDATE),
	T_TBL(TRACE_MOVE),
	T_TBL(TRACE_CHARPUT),
	T_TBL(TRACE_ORDINARY),
	T_TBL(TRACE_CALLS),
	T_TBL(TRACE_VIRTPUT),
	T_TBL(TRACE_IEVENT),
	T_TBL(TRACE_BITS),
	T_TBL(TRACE_ICALLS),
	T_TBL(TRACE_CCALLS),
	T_TBL(TRACE_MAXIMUM),
	{ (char *)0, 0 }
};

static char *tracetrace(int tlevel)
{
    static char	*buf;
    int		n;

    if (buf == 0) {
	size_t need = 12;
	for (n = 0; t_tbl[n].name != 0; n++)
	    need += strlen(t_tbl[n].name) + 2;
	buf = (char *)malloc(need);
    }
    sprintf(buf, "0x%02x = {", tlevel);
    if (tlevel == 0) {
	sprintf(buf + strlen(buf), "%s, ", t_tbl[0].name);
    } else {
	for (n = 1; t_tbl[n].name != 0; n++)
	    if ((tlevel & t_tbl[n].mask) == t_tbl[n].mask)
	    {
		strcat(buf, t_tbl[n].name);
		strcat(buf, ", ");
	    }
    }
    if (buf[strlen(buf) - 2] == ',')
	buf[strlen(buf) - 2] = '\0';
    return(strcat(buf,"}"));
}

/* fake a dynamically reconfigurable menu using the 0th entry to deselect
 * the others
 */
static int run_trace_menu(MENU *m)
{
    ITEM **items;
    ITEM *i, **p;

    for (;;) {
	bool changed = FALSE;
	switch (menu_driver(m, menu_virtualize(wGetchar(menu_win(m))))) {
	case E_UNKNOWN_COMMAND:
	    return FALSE;
	default:
	    items = menu_items(m);
	    i = current_item(m);
	    if (i == items[0]) {
		if (item_value(i)) {
		    for (p = items+1; *p != 0; p++)
			if (item_value(*p)) {
			    set_item_value(*p, FALSE);
			    changed = TRUE;
			}
		}
	    } else {
		for (p = items+1; *p != 0; p++)
		    if (item_value(*p)) {
			set_item_value(items[0], FALSE);
			changed = TRUE;
			break;
		    }
	    }
	    if (!changed)
		return TRUE;
	}
    }
}

static void trace_set(void)
/* interactively set the trace level */
{
    MENU	*m;
    ITEM	*items[SIZEOF(t_tbl)];
    ITEM	**ip = items;
    int		mrows, mcols, newtrace;
    int		n;
    WINDOW	*menuwin;

    mvaddstr(0, 0, "Interactively set trace level:");
    mvaddstr(2, 0, "  Press space bar to toggle a selection.");
    mvaddstr(3, 0, "  Use up and down arrow to move the select bar.");
    mvaddstr(4, 0, "  Press return to set the trace level.");
    mvprintw(6, 0, "(Current trace level is %s)", tracetrace(_nc_tracing));

    refresh();

    for (n = 0; t_tbl[n].name != 0; n++)
	*ip++ = new_item(t_tbl[n].name, "");
    *ip = (ITEM *)0;

    m = new_menu(items);

    set_menu_format(m, 0, 2);
    scale_menu(m, &mrows, &mcols);

    menu_opts_off(m, O_ONEVALUE);
    menuwin = newwin(mrows + 2, mcols +  2, MENU_Y, MENU_X);
    set_menu_win(m, menuwin);
    keypad(menuwin, TRUE);
    box(menuwin, 0, 0);

    set_menu_sub(m, derwin(menuwin, mrows, mcols, 1, 1));

    post_menu(m);

    for (ip = menu_items(m); *ip; ip++) {
	int mask = t_tbl[item_index(*ip)].mask;
	if (mask == 0)
	    set_item_value(*ip, _nc_tracing == 0);
	else if ((mask & _nc_tracing) == mask)
	    set_item_value(*ip, TRUE);
    }

    while (run_trace_menu(m))
	continue;

    newtrace = 0;
    for (ip = menu_items(m); *ip; ip++)
	if (item_value(*ip))
	    newtrace |= t_tbl[item_index(*ip)].mask;
    trace(newtrace);
    _tracef("trace level interactively set to %s", tracetrace(_nc_tracing));

    (void) mvprintw(LINES - 2, 0,
		     "Trace level is %s\n", tracetrace(_nc_tracing));
    (void) addstr("Press any key to continue...");
    wGetchar(stdscr);

    unpost_menu(m);
    delwin(menuwin);

    free_menu(m);
    for (ip = items; *ip; ip++)
	free_item(*ip);
}
#endif /* TRACE */
#endif /* USE_LIBMENU */

/****************************************************************************
 *
 * Forms test
 *
 ****************************************************************************/
#if USE_LIBFORM
static FIELD *make_label(int frow, int fcol, NCURSES_CONST char *label)
{
    FIELD	*f = new_field(1, strlen(label), frow, fcol, 0, 0);

    if (f)
    {
	set_field_buffer(f, 0, label);
	set_field_opts(f, field_opts(f) & ~O_ACTIVE);
    }
    return(f);
}

static FIELD *make_field(int frow, int fcol, int rows, int cols)
{
    FIELD	*f = new_field(rows, cols, frow, fcol, 0, 0);

    if (f)
	set_field_back(f, A_UNDERLINE);
    return(f);
}

static void display_form(FORM *f)
{
    WINDOW	*w;
    int rows, cols;

    scale_form(f, &rows, &cols);

    if ((w =newwin(rows+2, cols+4, 0, 0)) != (WINDOW *)0)
    {
	set_form_win(f, w);
	set_form_sub(f, derwin(w, rows, cols, 1, 2));
	box(w, 0, 0);
	keypad(w, TRUE);
    }

    if (post_form(f) != E_OK)
	wrefresh(w);
}

static void erase_form(FORM *f)
{
    WINDOW	*w = form_win(f);
    WINDOW	*s = form_sub(f);

    unpost_form(f);
    werase(w);
    wrefresh(w);
    delwin(s);
    delwin(w);
}

static int form_virtualize(WINDOW *w)
{
    static int	mode = REQ_INS_MODE;
    int		c = wGetchar(w);

    switch(c)
    {
    case QUIT:
    case ESCAPE:
	return(MAX_FORM_COMMAND + 1);

    /* demo doesn't use these three, leave them in anyway as sample code */
    case KEY_NPAGE:
    case CTRL('F'):
	return(REQ_NEXT_PAGE);
    case KEY_PPAGE:
	return(REQ_PREV_PAGE);

    case KEY_NEXT:
    case CTRL('N'):
	return(REQ_NEXT_FIELD);
    case KEY_PREVIOUS:
    case CTRL('P'):
	return(REQ_PREV_FIELD);

    case KEY_HOME:
	return(REQ_FIRST_FIELD);
    case KEY_END:
    case KEY_LL:
	return(REQ_LAST_FIELD);

    case CTRL('L'):
	return(REQ_LEFT_FIELD);
    case CTRL('R'):
	return(REQ_RIGHT_FIELD);
    case CTRL('U'):
	return(REQ_UP_FIELD);
    case CTRL('D'):
	return(REQ_DOWN_FIELD);

    case CTRL('W'):
	return(REQ_NEXT_WORD);
    case CTRL('B'):
	return(REQ_PREV_WORD);
    case CTRL('S'):
	return(REQ_BEG_FIELD);
    case CTRL('E'):
	return(REQ_END_FIELD);

    case KEY_LEFT:
	return(REQ_LEFT_CHAR);
    case KEY_RIGHT:
	return(REQ_RIGHT_CHAR);
    case KEY_UP:
	return(REQ_UP_CHAR);
    case KEY_DOWN:
	return(REQ_DOWN_CHAR);

    case CTRL('M'):
	return(REQ_NEW_LINE);
    case CTRL('I'):
	return(REQ_INS_CHAR);
    case CTRL('O'):
	return(REQ_INS_LINE);
    case CTRL('V'):
	return(REQ_DEL_CHAR);

    case CTRL('H'):
    case KEY_BACKSPACE:
	return(REQ_DEL_PREV);
    case CTRL('Y'):
	return(REQ_DEL_LINE);
    case CTRL('G'):
	return(REQ_DEL_WORD);

    case CTRL('C'):
	return(REQ_CLR_EOL);
    case CTRL('K'):
	return(REQ_CLR_EOF);
    case CTRL('X'):
	return(REQ_CLR_FIELD);
    case CTRL('A'):
	return(REQ_NEXT_CHOICE);
    case CTRL('Z'):
	return(REQ_PREV_CHOICE);

    case CTRL(']'):
	if (mode == REQ_INS_MODE)
	    return(mode = REQ_OVL_MODE);
	else
	    return(mode = REQ_INS_MODE);

    default:
	return(c);
    }
}

static int my_form_driver(FORM *form, int c)
{
    if (c == (MAX_FORM_COMMAND + 1)
		&& form_driver(form, REQ_VALIDATION) == E_OK)
	return(TRUE);
    else
    {
	beep();
	return(FALSE);
    }
}

static void demo_forms(void)
{
    WINDOW	*w;
    FORM	*form;
    FIELD	*f[10];
    int		finished = 0, c;

    mvaddstr(10, 57, "Forms Entry Test");

    move(18, 0);
    addstr("Defined form-traversal keys:   ^Q/ESC- exit form\n");
    addstr("^N   -- go to next field       ^P  -- go to previous field\n");
    addstr("Home -- go to first field      End -- go to last field\n");
    addstr("^L   -- go to field to left    ^R  -- go to field to right\n");
    addstr("^U   -- move upward to field   ^D  -- move downward to field\n");
    addstr("^W   -- go to next word        ^B  -- go to previous word\n");
    addstr("^S   -- go to start of field   ^E  -- go to end of field\n");
    addstr("^H   -- delete previous char   ^Y  -- delete line\n");
    addstr("^G   -- delete current word    ^C  -- clear to end of line\n");
    addstr("^K   -- clear to end of field  ^X  -- clear field\n");
    addstr("Arrow keys move within a field as you would expect.");
    refresh();

    /* describe the form */
    f[0] = make_label(0, 15, "Sample Form");
    f[1] = make_label(2, 0, "Last Name");
    f[2] = make_field(3, 0, 1, 18);
    f[3] = make_label(2, 20, "First Name");
    f[4] = make_field(3, 20, 1, 12);
    f[5] = make_label(2, 34, "Middle Name");
    f[6] = make_field(3, 34, 1, 12);
    f[7] = make_label(5, 0, "Comments");
    f[8] = make_field(6, 0, 4, 46);
    f[9] = (FIELD *)0;

    form = new_form(f);

    display_form(form);

    w = form_win(form);
    raw();
    while (!finished)
    {
	switch(form_driver(form, c = form_virtualize(w)))
	{
	case E_OK:
	    break;
	case E_UNKNOWN_COMMAND:
	    finished = my_form_driver(form, c);
	    break;
	default:
	    beep();
	    break;
	}
    }

    erase_form(form);

    free_form(form);
    for (c = 0; f[c] != 0; c++)
    	free_field(f[c]);
    noraw();
}
#endif	/* USE_LIBFORM */

/****************************************************************************
 *
 * Overlap test
 *
 ****************************************************************************/

static void fillwin(WINDOW *win, char ch)
{
    int y, x;
    int y1, x1;

    getmaxyx(win, y1, x1);
    for (y = 0; y < y1; y++)
    {
	wmove(win, y, 0);
	for (x = 0; x < x1; x++)
	    waddch(win, ch);
    }
}

static void crosswin(WINDOW *win, char ch)
{
    int y, x;
    int y1, x1;

    getmaxyx(win, y1, x1);
    for (y = 0; y < y1; y++)
    {
	for (x = 0; x < x1; x++)
	    if (((x > (x1 - 1) / 3) && (x <= (2 * (x1 - 1)) / 3))
	    || (((y > (y1 - 1) / 3) && (y <= (2 * (y1 - 1)) / 3))))
	    {
		wmove(win, y, x);
		waddch(win, ch);
	    }
    }
}

static void overlap_test(void)
/* test effects of overlapping windows */
{
    int	ch;

    WINDOW *win1 = newwin(9, 20, 3, 3);
    WINDOW *win2 = newwin(9, 20, 9, 16);

    raw();
    refresh();
    move(0, 0);
    printw("This test shows the behavior of wnoutrefresh() with respect to\n");
    printw("the shared region of two overlapping windows A and B.  The cross\n");
    printw("pattern in each window does not overlap the other.\n");


    move(18, 0);
    printw("a = refresh A, then B, then doupdate. b = refresh B, then A, then doupdaute\n");
    printw("c = fill window A with letter A.      d = fill window B with letter B.\n");
    printw("e = cross pattern in window A.        f = cross pattern in window B.\n");
    printw("g = clear window A.                   h = clear window B.\n");
    printw("i = overwrite A onto B.               j = overwrite B onto A.\n");
    printw("^Q/ESC = terminate test.");

    while ((ch = Getchar()) != QUIT && ch != ESCAPE)
	switch (ch)
	{
	case 'a':		/* refresh window A first, then B */
	    wnoutrefresh(win1);
	    wnoutrefresh(win2);
	    doupdate();
	    break;

	case 'b':		/* refresh window B first, then A */
	    wnoutrefresh(win2);
	    wnoutrefresh(win1);
	    doupdate();
	    break;

	case 'c':		/* fill window A so it's visible */
	    fillwin(win1, 'A');
	    break;

	case 'd':		/* fill window B so it's visible */
	    fillwin(win2, 'B');
	    break;

	case 'e':		/* cross test pattern in window A */
	    crosswin(win1, 'A');
	    break;

	case 'f':		/* cross test pattern in window A */
	    crosswin(win2, 'B');
	    break;

	case 'g':		/* clear window A */
	    wclear(win1);
	    wmove(win1, 0, 0);
	    break;

	case 'h':		/* clear window B */
	    wclear(win2);
	    wmove(win2, 0, 0);
	    break;

	case 'i':		/* overwrite A onto B */
	    overwrite(win1, win2);
	    break;

	case 'j':		/* overwrite B onto A */
	    overwrite(win2, win1);
	    break;
	}

    delwin(win2);
    delwin(win1);
    erase();
    endwin();
}

/****************************************************************************
 *
 * Main sequence
 *
 ****************************************************************************/

static bool
do_single_test(const char c)
/* perform a single specified test */
{
    switch (c)
    {
    case 'a':
	getch_test();
	break;

    case 'b':
	attr_test();
	break;

    case 'c':
	if (!has_colors())
	    Cannot("does not support color.");
	else
	    color_test();
	break;

    case 'd':
	if (!has_colors())
	    Cannot("does not support color.");
	else if (!can_change_color())
	    Cannot("has hardwired color values.");
	else
	    color_edit();
	break;

    case 'e':
	slk_test();
	break;

    case 'f':
	acs_display();
	break;

#if USE_LIBPANEL
    case 'o':
	demo_panels();
	break;
#endif

    case 'g':
	acs_and_scroll();
	break;

    case 'i':
	flushinp_test(stdscr);
	break;

    case 'k':
	test_sgr_attributes();
	break;

#if USE_LIBMENU
    case 'm':
	menu_test();
	break;
#endif

#if USE_LIBPANEL
    case 'p':
	demo_pad();
	break;
#endif

#if USE_LIBFORM
    case 'r':
	demo_forms();
	break;
#endif

    case 's':
        overlap_test();
	break;

#if USE_LIBMENU && defined(TRACE)
    case 't':
        trace_set();
	break;
#endif

    case '?':
	break;

    default:
	return FALSE;
    }

    return TRUE;
}

static void
usage(void)
{
    static const char *const tbl[] = {
	 "Usage: ncurses [options]"
	,""
	,"Options:"
	,"  -e fmt   specify format for soft-keys test (e)"
	,"  -f       rip-off footer line (can repeat)"
	,"  -h       rip-off header line (can repeat)"
	,"  -s msec  specify nominal time for panel-demo (default: 1, to hold)"
#ifdef TRACE
	,"  -t mask  specify default trace-level (may toggle with ^T)"
#endif
    };
    size_t n;
    for (n = 0; n < sizeof(tbl)/sizeof(tbl[0]); n++)
	fprintf(stderr, "%s\n", tbl[n]);
    exit(EXIT_FAILURE);
}

static void
set_terminal_modes(void)
{
    noraw();
    cbreak();
    noecho();
    scrollok(stdscr, TRUE);
    idlok(stdscr, TRUE);
    keypad(stdscr, TRUE);
}

#ifdef SIGUSR1
static RETSIGTYPE announce_sig(int sig)
{
    (void) fprintf(stderr, "Handled signal %d\r\n", sig);
}
#endif

static int rip_footer(WINDOW *win, int columns)
{
	wbkgd(win, A_REVERSE);
	werase(win);
	wmove(win, 0, 0);
	wprintw(win, "footer: %d columns", columns);
	wnoutrefresh(win);
	return OK;
}

static int rip_header(WINDOW *win, int columns)
{
	wbkgd(win, A_REVERSE);
	werase(win);
	wmove(win, 0, 0);
	wprintw(win, "header: %d columns", columns);
	wnoutrefresh(win);
	return OK;
}

/*+-------------------------------------------------------------------------
	main(argc,argv)
--------------------------------------------------------------------------*/

int
main(int argc, char *argv[])
{
    int		command, c;
    int		my_e_param = 1;

#if HAVE_LOCALE_H
    setlocale(LC_CTYPE, "");
#endif

    while ((c = getopt(argc, argv, "e:fhs:t:")) != EOF) {
	switch (c) {
	case 'e':
	    my_e_param = atoi(optarg);
#ifdef NCURSES_VERSION
	    if (my_e_param > 3)	/* allow extended layouts */
	    	usage();
#else
	    if (my_e_param > 1)
	    	usage();
#endif
	    break;
	case 'f':
	    ripoffline(-1, rip_footer);
	    break;
	case 'h':
	    ripoffline(1, rip_header);
	    break;
#if USE_LIBPANEL
	case 's':
	    nap_msec = atol(optarg);
	    break;
#endif
#ifdef TRACE
	case 't':
	    save_trace = atoi(optarg);
	    break;
#endif
	default:
	    usage();
	}
    }

    /*
     * If there's no menus (unlikely for ncurses!), then we'll have to set
     * tracing on initially, just in case the user wants to test something that
     * doesn't involve wGetchar.
     */
#ifdef TRACE
    /* enable debugging */
#if !USE_LIBMENU
    trace(save_trace);
#else
    if (!isatty(fileno(stdin)))
    	trace(save_trace);
#endif /* USE_LIBMENU */
#endif /* TRACE */

    /* tell it we're going to play with soft keys */
    slk_init(my_e_param);

#ifdef SIGUSR1
    /* set up null signal catcher so we can see what interrupts to getch do */
    signal(SIGUSR1, announce_sig);
#endif

    /* we must initialize the curses data structure only once */
    initscr();
    bkgdset(BLANK);

    /* tests, in general, will want these modes */
    start_color();
    set_terminal_modes();
    def_prog_mode();

    /*
     * Return to terminal mode, so we're guaranteed of being able to
     * select terminal commands even if the capabilities are wrong.
     */
    endwin();

    (void) puts("Welcome to ncurses.  Press ? for help.");

    do {
	(void) puts("This is the ncurses main menu");
	(void) puts("a = keyboard and mouse input test");
	(void) puts("b = character attribute test");
	(void) puts("c = color test pattern");
	(void) puts("d = edit RGB color values");
	(void) puts("e = exercise soft keys");
	(void) puts("f = display ACS characters");
	(void) puts("g = display windows and scrolling");
	(void) puts("i = test of flushinp()");
	(void) puts("k = display character attributes");
#if USE_LIBMENU
	(void) puts("m = menu code test");
#endif
#if USE_LIBPANEL
	(void) puts("o = exercise panels library");
	(void) puts("p = exercise pad features");
	(void) puts("q = quit");
#endif
#if USE_LIBFORM
	(void) puts("r = exercise forms code");
#endif
	(void) puts("s = overlapping-refresh test");
#if USE_LIBMENU && defined(TRACE)
	(void) puts("t = set trace level");
#endif
	(void) puts("? = repeat this command summary");

	(void) fputs("> ", stdout);
	(void) fflush(stdout);		/* necessary under SVr4 curses */
	/*
	 * This used to be an 'fgets()' call.  However (on Linux, at least)
	 * mixing stream I/O and 'read()' (used in the library) causes the
	 * input stream to be flushed when switching between the two.
	 */
	command = 0;
	for(;;) {
		char ch;
		if (read(fileno(stdin), &ch, 1) <= 0) {
			if (command == 0)
				command = 'q';
			break;
		} else if (command == 0 && !isspace(ch)) {
			command = ch;
		} else if (ch == '\n' || ch == '\r') {
			if (command != 0)
				break;
			(void) fputs("> ", stdout);
			(void) fflush(stdout);
		}
	}
	if (do_single_test(command)) {
		/*
		 * This may be overkill; it's intended to reset everything back
		 * to the initial terminal modes so that tests don't get in
		 * each other's way.
		 */
		flushinp();
		set_terminal_modes();
    		reset_prog_mode();
		clear();
		refresh();
		endwin();
		if (command == '?') {
			(void) puts("This is the ncurses capability tester.");
			(void) puts("You may select a test from the main menu by typing the");
			(void) puts("key letter of the choice (the letter to left of the =)");
			(void) puts("at the > prompt.  The commands `x' or `q' will exit.");
		}
		continue;
	}
    } while
	(command != 'q');

    ExitProgram(EXIT_SUCCESS);
}

/* ncurses.c ends here */
