plan9us-hg/bclock.c

   1 /* Author: Rob DeHart IRC Asaph                 */
   2 /* Home: http://rob.cqtopia.com/plan9/bclock.c  */
   3
   4 #include <u.h>
   5 #include <libc.h>
   6 #include <draw.h>
   7 #include <event.h>
   8
   9 #define MARGIN 4
  10
  11 Image *bground, *gray;
  12
  13 void draw_block(int x, int y, int on)
  14 {
  15         Image *color;
  16         Rectangle rect, bounds;
  17         rect = screen->r;
  18         int boxX, boxY;
  19         boxX = (rect.max.x - rect.min.x - MARGIN * 7) / 6;
  20         boxY = (rect.max.y - rect.min.y - MARGIN * 5) / 4;
  21         bounds = Rect(MARGIN + rect.min.x + x * (boxX + MARGIN),
  22                       MARGIN + rect.min.y + y * (boxY + MARGIN),
  23                       MARGIN + rect.min.x + x * (boxX + MARGIN) + boxX,
  24                       MARGIN + rect.min.y + y * (boxY + MARGIN) + boxY);
  25         if (on)
  26                 color = display->black;
  27         else
  28                 color = gray;
  29         draw(screen, bounds, color, nil, rect.min);
  30 }
  31
  32 void light_cols(int num, int grp)
  33 {
  34         int tens, ones, i;
  35         tens = num / 10;
  36         ones = num % 10;
  37         for (i = 3; i >= 0; --i)
  38         {
  39                 if ((grp == 0 && i <= 1) || (grp != 0 && i <= 2))
  40                         draw_block(grp * 2, 3 - i, tens >> i & 1);
  41                 draw_block(grp * 2 + 1, 3 - i, ones >> i & 1);
  42         }
  43 }
  44
  45
  46 void
  47 redraw(Image *screen)
  48 {
  49         static int tm, ntm;
  50         static Rectangle r;
  51         static Tm tms;
  52         static Tm ntms;
  53
  54         ntm = time(0);
  55         if(ntm == tm && eqrect(screen->r, r))
  56                 return;
  57
  58         ntms = *localtime(ntm);
  59         tm = ntm;
  60         tms = ntms;
  61         r = screen->r;
  62
  63         draw(screen, screen->r, bground, nil, ZP);
  64         light_cols(ntms.hour, 0);
  65         light_cols(ntms.min, 1);
  66         light_cols(ntms.sec, 2);
  67
  68         flushimage(display, 1);
  69 }
  70
  71 void
  72 eresized(int new)
  73 {
  74         if(new && getwindow(display, Refnone) < 0)
  75                 fprint(2,"can't reattach to window");
  76         redraw(screen);
  77 }
  78
  79 #ifdef PLAN9PORT
  80 void
  81 usage(void)
  82 {
  83         fprint(2, "usage: bclock [-W winsize]\n");
  84         exits("usage");
  85 }
  86 #endif
  87
  88 void
  89 main(int argc, char *argv[])
  90 {
  91         Event e;
  92         Mouse m;
  93         Menu menu;
  94         char *mstr[] = {"exit", 0};
  95         int key, timer;
  96
  97 #ifdef PLAN9PORT
  98         ARGBEGIN{
  99         case 'W':
 100                 winsize = EARGF(usage());
 101                 break;
 102         default:
 103                 usage();
 104         }ARGEND
 105 #endif
 106
 107         initdraw(0,0,"bclock");
 108         bground = allocimagemix(display, DPalebluegreen, DWhite);
 109         gray = allocimage(display, Rect(0, 0, 1, 1), RGB24, 1, 0xDDDDDDFF);
 110
 111         redraw(screen);
 112
 113         einit(Emouse);
 114         timer = etimer(0, 1000);
 115
 116         menu.item = mstr;
 117         menu.lasthit = 0;
 118         for(;;) {
 119                 key = event(&e);
 120                 if(key == Emouse) {
 121                         m = e.mouse;
 122                         if(m.buttons & 4) {
 123                                 if(emenuhit(3, &m, &menu) == 0)
 124                                         exits(0);
 125                         }
 126                 } else if(key == timer) {
 127                         redraw(screen);
 128                 }
 129         }
 130 }