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30 * $Id: echochar.c,v 1.21 2020/02/02 23:34:34 tom Exp $
32 * Demonstrate the echochar function (compare to dots.c).
33 * Thomas Dickey - 2006/11/4
36 #include <test.priv.h>
40 static bool interrupted = FALSE;
41 static long total_chars = 0;
42 static time_t started;
49 printf("\n\n%ld total cells, rate %.2f/sec\n",
51 ((double) (total_chars) / (double) (time((time_t *) 0) - started)));
55 onsig(int n GCC_UNUSED)
63 long r = (rand() & 077777);
64 return ((double) r / 32768.);
68 set_color(char *my_pairs, int fg, int bg)
70 int pair = (fg * COLORS) + bg;
71 if (pair < COLOR_PAIRS) {
72 if (!my_pairs[pair]) {
73 init_pair((short) pair,
77 attron(COLOR_PAIR(pair));
82 main(int argc GCC_UNUSED,
83 char *argv[]GCC_UNUSED)
94 while ((ch = getopt(argc, argv, "r")) != -1) {
100 fprintf(stderr, "Usage: echochar [-r]\n");
101 ExitProgram(EXIT_FAILURE);
105 InitAndCatch(initscr(), onsig);
107 use_colors = has_colors();
110 if (COLOR_PAIRS > 0) {
111 my_pairs = typeCalloc(char, (size_t) COLOR_PAIRS);
113 use_colors = (my_pairs != 0);
116 srand((unsigned) time(0));
120 r = (double) (LINES - 4);
121 c = (double) (COLS - 4);
122 started = time((time_t *) 0);
124 while (!interrupted) {
125 int x = (int) (c * ranf()) + 2;
126 int y = (int) (r * ranf()) + 2;
127 int p = (ranf() > 0.9) ? '*' : ' ';
130 if (use_colors > 0) {
131 int z = (int) (ranf() * COLORS);
133 set_color(my_pairs, z, last_bg);
136 set_color(my_pairs, last_fg, z);
141 if (ranf() <= 0.01) {
159 ExitProgram(EXIT_SUCCESS);