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/****************************************************************************
* Copyright (c) 1999 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. *
****************************************************************************/
/*
* Author: Thomas E. Dickey <dickey@clark.net> 1999
*
* $Id: dots.c,v 1.2 1999/10/23 13:24:32 tom Exp $
*
* A simple demo of the terminfo interface.
*/
#include <test.priv.h>
#include <term.h> /* for tparm() */
#include <time.h>
#include <signal.h>
#define valid(s) ((s != 0) && s != (char *)-1)
static bool interrupted = FALSE;
static int
outc(int c)
{
if (interrupted) {
char tmp = c;
write(STDOUT_FILENO, &tmp, 1);
} else {
putc(c, stdout);
}
return 0;
}
static bool
outs(char *s)
{
if (valid(s)) {
tputs(s, 1, outc);
return TRUE;
}
return FALSE;
}
static void
cleanup(void)
{
outs(exit_attribute_mode);
if (!outs(orig_colors))
outs(orig_pair);
outs(clear_screen);
outs(cursor_normal);
}
static void
onsig(int n GCC_UNUSED)
{
interrupted = TRUE;
cleanup();
exit(EXIT_FAILURE);
}
static float
ranf(void)
{
long r = (rand() & 077777);
return ((float) r / 32768.);
}
int
main(
int argc GCC_UNUSED,
char *argv[]GCC_UNUSED)
{
int x, y, z, j, p;
float r;
float c;
for (j = SIGHUP; j <= SIGTERM; j++)
if (signal(j, SIG_IGN) != SIG_IGN)
signal(j, onsig);
srand(time(0));
setupterm((char *) 0, 1, (int *) 0);
outs(clear_screen);
outs(cursor_invisible);
if (max_colors > 1) {
if (!valid(set_a_foreground)
|| !valid(set_a_background)
|| (!valid(orig_colors) && !valid(orig_pair)))
max_colors = -1;
}
r = (float) (lines - 4);
c = (float) (columns - 4);
for (;;) {
x = (int) (c * ranf()) + 2;
y = (int) (r * ranf()) + 2;
p = (ranf() > 0.9) ? '*' : ' ';
tputs(tparm(cursor_address, y, x), 1, outc);
if (max_colors > 0) {
z = ranf() * max_colors;
if (ranf() > 0.01) {
tputs(tparm(set_a_foreground, z), 1, outc);
} else {
tputs(tparm(set_a_background, z), 1, outc);
}
} else if (valid(exit_attribute_mode)
&& valid(enter_reverse_mode)) {
if (ranf() <= 0.01)
outs((ranf() > 0.6) ? enter_reverse_mode :
exit_attribute_mode);
}
outc(p);
fflush(stdout);
}
}
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