release/src/router/libncurses/test/echochar.c

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  28 /*
  29  * $Id: echochar.c,v 1.8 2010/11/14 01:00:44 tom Exp $
  30  *
  31  * Demonstrate the echochar function (compare to dots.c).
  32  * Thomas Dickey - 2006/11/4
  33  */
  34
  35 #include <test.priv.h>
  36
  37 #include <time.h>
  38
  39 #define valid(s) ((s != 0) && s != (char *)-1)
  40
  41 static bool interrupted = FALSE;
  42 static long total_chars = 0;
  43 static time_t started;
  44
  45 static void
  46 cleanup(void)
  47 {
  48     endwin();
  49
  50     printf("\n\n%ld total chars, rate %.2f/sec\n",
  51            total_chars,
  52            ((double) (total_chars) / (double) (time((time_t *) 0) - started)));
  53 }
  54
  55 static void
  56 onsig(int n GCC_UNUSED)
  57 {
  58     interrupted = TRUE;
  59 }
  60
  61 static double
  62 ranf(void)
  63 {
  64     long r = (rand() & 077777);
  65     return ((double) r / 32768.);
  66 }
  67
  68 static void
  69 set_color(char *my_pairs, int fg, int bg)
  70 {
  71     int pair = (fg * COLORS) + bg;
  72     if (!my_pairs[pair]) {
  73         init_pair((short) pair,
  74                   (short) fg,
  75                   (short) bg);
  76     }
  77     attron(COLOR_PAIR(pair));
  78 }
  79
  80 int
  81 main(int argc GCC_UNUSED,
  82      char *argv[]GCC_UNUSED)
  83 {
  84     int ch, x, y, z, p;
  85     double r;
  86     double c;
  87     bool use_colors;
  88     bool opt_r = FALSE;
  89     char *my_pairs = 0;
  90     int last_fg = 0;
  91     int last_bg = 0;
  92
  93     while ((ch = getopt(argc, argv, "r")) != -1) {
  94         switch (ch) {
  95         case 'r':
  96             opt_r = TRUE;
  97             break;
  98         default:
  99             fprintf(stderr, "usage: echochar [-r]\n");
 100             ExitProgram(EXIT_FAILURE);
 101         }
 102     }
 103
 104     CATCHALL(onsig);
 105     initscr();
 106
 107     use_colors = has_colors();
 108     if (use_colors) {
 109         start_color();
 110         if (COLOR_PAIRS > 0) {
 111             my_pairs = typeCalloc(char, (size_t) COLOR_PAIRS);
 112         }
 113         use_colors = (my_pairs != 0);
 114     }
 115
 116     srand((unsigned) time(0));
 117
 118     curs_set(0);
 119
 120     r = (double) (LINES - 4);
 121     c = (double) (COLS - 4);
 122     started = time((time_t *) 0);
 123
 124     while (!interrupted) {
 125         x = (int) (c * ranf()) + 2;
 126         y = (int) (r * ranf()) + 2;
 127         p = (ranf() > 0.9) ? '*' : ' ';
 128
 129         move(y, x);
 130         if (use_colors > 0) {
 131             z = (int) (ranf() * COLORS);
 132             if (ranf() > 0.01) {
 133                 set_color(my_pairs, z, last_bg);
 134                 last_fg = z;
 135             } else {
 136                 set_color(my_pairs, last_fg, z);
 137                 last_bg = z;
 138                 napms(1);
 139             }
 140         } else {
 141             if (ranf() <= 0.01) {
 142                 if (ranf() > 0.6)
 143                     attron(A_REVERSE);
 144                 else
 145                     attroff(A_REVERSE);
 146                 napms(1);
 147             }
 148         }
 149         if (opt_r) {
 150             addch(UChar(p));
 151             refresh();
 152         } else {
 153             echochar(UChar(p));
 154         }
 155         ++total_chars;
 156     }
 157     cleanup();
 158     ExitProgram(EXIT_SUCCESS);
 159 }