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141 lines
4.0 KiB
C
141 lines
4.0 KiB
C
/****************************************************************************
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* Copyright (c) 1999-2001,2002 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/*
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* Author: Thomas E. Dickey <dickey@clark.net> 1999
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*
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* $Id: dots.c,v 1.8 2002/04/06 21:33:42 tom Exp $
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*
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* A simple demo of the terminfo interface.
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*/
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#include <time.h>
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#include <test.priv.h>
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#define valid(s) ((s != 0) && s != (char *)-1)
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static bool interrupted = FALSE;
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static int
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outc(int c)
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{
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if (interrupted) {
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char tmp = c;
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write(STDOUT_FILENO, &tmp, 1);
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} else {
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putc(c, stdout);
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}
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return 0;
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}
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static bool
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outs(char *s)
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{
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if (valid(s)) {
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tputs(s, 1, outc);
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return TRUE;
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}
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return FALSE;
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}
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static void
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cleanup(void)
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{
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outs(exit_attribute_mode);
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if (!outs(orig_colors))
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outs(orig_pair);
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outs(clear_screen);
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outs(cursor_normal);
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}
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static void
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onsig(int n GCC_UNUSED)
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{
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interrupted = TRUE;
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cleanup();
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ExitProgram(EXIT_FAILURE);
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}
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static float
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ranf(void)
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{
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long r = (rand() & 077777);
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return ((float) r / 32768.);
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}
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int
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main(
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int argc GCC_UNUSED,
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char *argv[]GCC_UNUSED)
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{
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int x, y, z, j, p;
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float r;
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float c;
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for (j = SIGHUP; j <= SIGTERM; j++)
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if (signal(j, SIG_IGN) != SIG_IGN)
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signal(j, onsig);
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srand(time(0));
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setupterm((char *) 0, 1, (int *) 0);
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outs(clear_screen);
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outs(cursor_invisible);
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if (max_colors > 1) {
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if (!valid(set_a_foreground)
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|| !valid(set_a_background)
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|| (!valid(orig_colors) && !valid(orig_pair)))
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max_colors = -1;
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}
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r = (float) (lines - 4);
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c = (float) (columns - 4);
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for (;;) {
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x = (int) (c * ranf()) + 2;
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y = (int) (r * ranf()) + 2;
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p = (ranf() > 0.9) ? '*' : ' ';
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tputs(tparm3(cursor_address, y, x), 1, outc);
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if (max_colors > 0) {
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z = (int) (ranf() * max_colors);
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if (ranf() > 0.01) {
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tputs(tparm2(set_a_foreground, z), 1, outc);
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} else {
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tputs(tparm2(set_a_background, z), 1, outc);
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}
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} else if (valid(exit_attribute_mode)
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&& valid(enter_reverse_mode)) {
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if (ranf() <= 0.01)
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outs((ranf() > 0.6) ? enter_reverse_mode :
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exit_attribute_mode);
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}
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outc(p);
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fflush(stdout);
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}
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}
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