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

   1 /* $Id: tclock.c,v 1.30 2011/03/22 09:16:00 tom Exp $ */
   2
   3 #include <test.priv.h>
   4
   5 #if HAVE_MATH_H
   6
   7 #include <math.h>
   8
   9 #if TIME_WITH_SYS_TIME
  10 # include <sys/time.h>
  11 # include <time.h>
  12 #else
  13 # if HAVE_SYS_TIME_H
  14 #  include <sys/time.h>
  15 # else
  16 #  include <time.h>
  17 # endif
  18 #endif
  19
  20 /*
  21   tclock - analog/digital clock for curses.
  22   If it gives you joy, then
  23   (a) I'm glad
  24   (b) you need to get out more :-)
  25
  26   This program is copyright Howard Jones, September 1994
  27   (ha.jones@ic.ac.uk). It may be freely distributed as
  28   long as this copyright message remains intact, and any
  29   modifications are clearly marked as such. [In fact, if
  30   you modify it, I wouldn't mind the modifications back,
  31   especially if they add any nice features. A good one
  32   would be a precalc table for the 60 hand positions, so
  33   that the floating point stuff can be ditched. As I said,
  34   it was a 20 hackup minute job.]
  35
  36   COMING SOON: tfishtank. Be the envy of your mac-owning
  37   colleagues.
  38 */
  39
  40 /* To compile: cc -o tclock tclock.c -lcurses -lm */
  41
  42 #ifndef PI
  43 #define PI 3.141592654
  44 #endif
  45
  46 #define sign(_x) (_x<0?-1:1)
  47
  48 #define ASPECT 2.2
  49 #define ROUND(value) ((int)((value) + 0.5))
  50
  51 #define A2X(angle,radius) ROUND(ASPECT * radius * sin(angle))
  52 #define A2Y(angle,radius) ROUND(radius * cos(angle))
  53
  54 /* Plot a point */
  55 static void
  56 plot(int x, int y, char col)
  57 {
  58     MvAddCh(y, x, (chtype) col);
  59 }
  60
  61 /* Draw a diagonal(arbitrary) line using Bresenham's alogrithm. */
  62 static void
  63 dline(int pair, int from_x, int from_y, int x2, int y2, char ch)
  64 {
  65     int dx, dy;
  66     int ax, ay;
  67     int sx, sy;
  68     int x, y;
  69     int d;
  70
  71     if (has_colors())
  72         (void) attrset((attr_t) COLOR_PAIR(pair));
  73
  74     dx = x2 - from_x;
  75     dy = y2 - from_y;
  76
  77     ax = abs(dx * 2);
  78     ay = abs(dy * 2);
  79
  80     sx = sign(dx);
  81     sy = sign(dy);
  82
  83     x = from_x;
  84     y = from_y;
  85
  86     if (ax > ay) {
  87         d = ay - (ax / 2);
  88
  89         while (1) {
  90             plot(x, y, ch);
  91             if (x == x2)
  92                 return;
  93
  94             if (d >= 0) {
  95                 y += sy;
  96                 d -= ax;
  97             }
  98             x += sx;
  99             d += ay;
 100         }
 101     } else {
 102         d = ax - (ay / 2);
 103
 104         while (1) {
 105             plot(x, y, ch);
 106             if (y == y2)
 107                 return;
 108
 109             if (d >= 0) {
 110                 x += sx;
 111                 d -= ay;
 112             }
 113             y += sy;
 114             d += ax;
 115         }
 116     }
 117 }
 118
 119 int
 120 main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED)
 121 {
 122     int i, cx, cy;
 123     double cr, mradius, hradius, mangle, hangle;
 124     double sangle, sradius, hours;
 125     int hdx, hdy;
 126     int mdx, mdy;
 127     int sdx, sdy;
 128     int ch;
 129     int lastbeep = -1;
 130     bool odd = FALSE;
 131     time_t tim;
 132     struct tm *t;
 133     char szChar[10];
 134     char *text;
 135     short my_bg = COLOR_BLACK;
 136 #if HAVE_GETTIMEOFDAY
 137     struct timeval current;
 138     double fraction = 0.0;
 139 #endif
 140
 141     setlocale(LC_ALL, "");
 142
 143     initscr();
 144     noecho();
 145     cbreak();
 146     nodelay(stdscr, TRUE);
 147     curs_set(0);
 148
 149     if (has_colors()) {
 150         start_color();
 151 #if HAVE_USE_DEFAULT_COLORS
 152         if (use_default_colors() == OK)
 153             my_bg = -1;
 154 #endif
 155         init_pair(1, COLOR_RED, my_bg);
 156         init_pair(2, COLOR_MAGENTA, my_bg);
 157         init_pair(3, COLOR_GREEN, my_bg);
 158         init_pair(4, COLOR_WHITE, COLOR_BLUE);
 159     }
 160 #ifdef KEY_RESIZE
 161     keypad(stdscr, TRUE);
 162   restart:
 163 #endif
 164     cx = (COLS - 1) / 2;        /* 39 */
 165     cy = LINES / 2;             /* 12 */
 166     if (cx / ASPECT < cy)
 167         cr = cx / ASPECT;
 168     else
 169         cr = cy;
 170     sradius = (5 * cr) / 6;     /* 10 */
 171     mradius = (3 * cr) / 4;     /* 9 */
 172     hradius = cr / 2;           /* 6 */
 173
 174     for (i = 0; i < 12; i++) {
 175         sangle = (i + 1) * (2.0 * PI) / 12.0;
 176         sdx = A2X(sangle, sradius);
 177         sdy = A2Y(sangle, sradius);
 178         sprintf(szChar, "%d", i + 1);
 179
 180         MvAddStr(cy - sdy, cx + sdx, szChar);
 181     }
 182
 183     MvAddStr(0, 0, "ASCII Clock by Howard Jones (ha.jones@ic.ac.uk),1994");
 184
 185     sradius = (4 * sradius) / 5;
 186     for (;;) {
 187         napms(100);
 188
 189         tim = time(0);
 190         t = localtime(&tim);
 191
 192         hours = (t->tm_hour + (t->tm_min / 60.0));
 193         if (hours > 12.0)
 194             hours -= 12.0;
 195
 196         mangle = ((t->tm_min + (t->tm_sec / 60.0)) * (2 * PI) / 60.0);
 197         mdx = A2X(mangle, mradius);
 198         mdy = A2Y(mangle, mradius);
 199
 200         hangle = ((hours) * (2.0 * PI) / 12.0);
 201         hdx = A2X(hangle, hradius);
 202         hdy = A2Y(hangle, hradius);
 203
 204 #if HAVE_GETTIMEOFDAY
 205         gettimeofday(&current, 0);
 206         fraction = ((double) current.tv_usec / 1.0e6);
 207 #endif
 208         sangle = ((t->tm_sec + fraction) * (2.0 * PI) / 60.0);
 209         sdx = A2X(sangle, sradius);
 210         sdy = A2Y(sangle, sradius);
 211
 212         dline(3, cx, cy, cx + mdx, cy - mdy, '#');
 213
 214         (void) attrset(A_REVERSE);
 215         dline(2, cx, cy, cx + hdx, cy - hdy, '.');
 216         attroff(A_REVERSE);
 217
 218         if (has_colors())
 219             (void) attrset(COLOR_PAIR(1));
 220
 221         dline(1, cx, cy, cx + sdx, cy - sdy, 'O');
 222
 223         if (has_colors())
 224             (void) attrset(COLOR_PAIR(0));
 225
 226         text = ctime(&tim);
 227         MvPrintw(2, 0, "%.*s", (int) (strlen(text) - 1), text);
 228         refresh();
 229         if ((t->tm_sec % 5) == 0
 230             && t->tm_sec != lastbeep) {
 231             lastbeep = t->tm_sec;
 232             if (has_colors()) {
 233                 odd = !odd;
 234                 bkgd((chtype) (odd ? COLOR_PAIR(4) : COLOR_PAIR(0)));
 235             }
 236             beep();
 237         }
 238
 239         if ((ch = getch()) != ERR) {
 240 #ifdef KEY_RESIZE
 241             if (ch == KEY_RESIZE) {
 242                 flash();
 243                 erase();
 244                 wrefresh(curscr);
 245                 goto restart;
 246             }
 247 #endif
 248             break;
 249         }
 250
 251         dline(0, cx, cy, cx + hdx, cy - hdy, ' ');
 252         dline(0, cx, cy, cx + mdx, cy - mdy, ' ');
 253         dline(0, cx, cy, cx + sdx, cy - sdy, ' ');
 254
 255     }
 256
 257     curs_set(1);
 258     endwin();
 259     ExitProgram(EXIT_SUCCESS);
 260 }
 261 #else
 262 int
 263 main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED)
 264 {
 265     printf("This program requires the development header math.h\n");
 266     ExitProgram(EXIT_FAILURE);
 267 }
 268 #endif