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29 * $Id: echochar.c,v 1.19 2019/08/24 23:11:01 tom Exp $
31 * Demonstrate the echochar function (compare to dots.c).
32 * Thomas Dickey - 2006/11/4
35 #include <test.priv.h>
39 static bool interrupted = FALSE;
40 static long total_chars = 0;
41 static time_t started;
48 printf("\n\n%ld total cells, rate %.2f/sec\n",
50 ((double) (total_chars) / (double) (time((time_t *) 0) - started)));
54 onsig(int n GCC_UNUSED)
62 long r = (rand() & 077777);
63 return ((double) r / 32768.);
67 set_color(char *my_pairs, int fg, int bg)
69 int pair = (fg * COLORS) + bg;
70 if (pair < COLOR_PAIRS) {
71 if (!my_pairs[pair]) {
72 init_pair((short) pair,
76 attron(COLOR_PAIR(pair));
81 main(int argc GCC_UNUSED,
82 char *argv[]GCC_UNUSED)
93 while ((ch = getopt(argc, argv, "r")) != -1) {
99 fprintf(stderr, "Usage: echochar [-r]\n");
100 ExitProgram(EXIT_FAILURE);
104 InitAndCatch(initscr(), onsig);
106 use_colors = has_colors();
109 if (COLOR_PAIRS > 0) {
110 my_pairs = typeCalloc(char, (size_t) COLOR_PAIRS);
112 use_colors = (my_pairs != 0);
115 srand((unsigned) time(0));
119 r = (double) (LINES - 4);
120 c = (double) (COLS - 4);
121 started = time((time_t *) 0);
123 while (!interrupted) {
124 int x = (int) (c * ranf()) + 2;
125 int y = (int) (r * ranf()) + 2;
126 int p = (ranf() > 0.9) ? '*' : ' ';
129 if (use_colors > 0) {
130 int z = (int) (ranf() * COLORS);
132 set_color(my_pairs, z, last_bg);
135 set_color(my_pairs, last_fg, z);
140 if (ranf() <= 0.01) {
158 ExitProgram(EXIT_SUCCESS);